JP2016108698A - Melt-spinning apparatus for synthetic fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a melt-spinning apparatus in which a product kind changeover operation is automated, and the loss of production opportunity is ameliorated, by enabling a spinneret surface depth and an oil supply position to be finely adjusted.SOLUTION: A melt-spinning apparatus for a synthetic fiber includes: an extruder for melt-extruding a resin; a heating box 1 for measuring and distributing an extruded polymer; a pack 2 including a spinneret 3 for forming the polymer measured and distributed into a desired fiber shape; a device 12 for cooling spun yarns Y; a hood provided so as to enclose the yarns Y which are present in a range from the undersurface of the spinneret 3 to an upper end of the cooling device 12; an oil application device 13 for applying oil to the yarns Y; and a take-up device 21 for the yarns Y. In the melt-spinning apparatus for a synthetic fiber, there are provided drive parts 10 and 17 for allowing the oil application device 13 and the hood to be moved to and held at their respective optional positions.SELECTED DRAWING: Figure 1

Description

In the present invention, when producing various types of synthetic fibers using the same melt spinning apparatus, the length from the bottom of the spinneret to the upper end of the cooling device (hereinafter referred to as “the bottom of the cooling device”) is not changed without complicated operations. , And the length from the bottom of the spinneret to applying the oil (hereinafter referred to as the oil supply position) can be easily changed, and the change position can be finely adjusted. The present invention relates to a melt spinning apparatus that can obtain high quality and operability and can reduce the production loss by reducing the labor and time required for changing the type.

  More specifically, the spinning conditions and the polymer substrate, such as the fineness of the single yarn, the number of single yarns, the spinning temperature, the take-up speed, the take-off speed, the polymer viscosity, the presence or absence of copolymerization, the amount of additives, etc. are changed. However, not only can good quality and operability be obtained by having a variable mechanism that can easily and finely adjust the appropriate base depth and oil supply position without being affected by these factors. By changing the base depth and oil supply position automatically based on the preset conditions, the labor and time required for the work can be almost eliminated. The present invention relates to a synthetic fiber melt spinning apparatus.

In recent years, diversification of synthetic fibers, especially polyester fibers, has progressed, and it has become essential to produce high-value-added varieties with a small number of varieties in the same melt spinning apparatus. When producing such a variety of products, there are naturally appropriate conditions for each product type, and in order to make the conditions suitable for operability and quality, in order to optimize the conditions when switching product types, In order to optimize the depth and oil supply position, it takes a lot of time and effort to change the equipment, remodeling, etc., and when producing a small amount of other varieties, the number of varieties switching work itself increases. It took more and more time and effort.

  Here, the depth of the nozzle face and the oil supply position will be described. First, the depth of the die surface means from the lower surface of the die discharged from the polymer to the upper stage of the cooling device where cooling air for cooling the yarn is blown out. This depth region of the die surface is a region in which a predetermined polymer is discharged from the die hole and formed into a yarn, and is one of extremely important zones that have a great influence on the yarn-making property and quality even in melt spinning. For example, if the varieties have a large discharge amount per single hole and a large single yarn fineness, a long distance is required until the yarn cools and solidifies, and thus a device having a deep base is required. On the other hand, for the varieties having a fine single yarn fineness, the cooling and solidification of the yarn is completed quickly, so that the depth of the die surface is preferably shallow. Further, for example, in a high viscosity polymer and a spinning type having a high spinning temperature, a long distance is required until the yarn is cooled and solidified after being discharged, and thus a device having a deep base surface is required. On the other hand, in the low-viscosity varieties having a low spinning temperature, the cooling and solidification of the yarn is completed in a short distance, so that the depth of the die surface is preferably shallow. That is, when the polymer discharged from the nozzle discharge hole is formed into a yarn, if the amount of heat of the melted and discharged polymer is large, it is necessary to increase the distance until cooling and solidification, while if the amount is small, the distance is Need to be short.

Next, the oil supply position will be described. The oil supply position refers to the distance from the base discharge surface where the molten polymer is discharged from the base to the position where the oil is applied. This oil supply position is one of important conditions affecting the fineness unevenness, strength and elongation of single yarn.
From the viewpoint of fineness unevenness, it is desirable to apply an oil agent to the yarns early to make them converge so that fineness unevenness due to yarn swinging can be prevented. Therefore, it is preferable to supply oil immediately after the yarn is cooled and solidified and the surface form is stabilized. Therefore, for example, in the type having a large single yarn fineness, the distance to the cooling and solidifying point of the yarn is long, so it is necessary to take a long oil supply position. On the other hand, in the varieties having a fine single yarn fineness, the cooling and solidification of the yarn is completed quickly, and therefore it is preferable to shorten the oil supply position.
On the other hand, from the viewpoint of the strength and elongation of the fiber, by shortening the oil supply position and applying it early, the yarn converges earlier, and the spinning tension (air drag generated when the yarn travels) ) To suppress molecular orientation is important for improving strength and elongation.
For these reasons, since the depth of the die surface and the oil supply position have a great influence on the yarn-making property and quality even in melt spinning, it has been required to optimize each condition according to each type. In addition, as the varieties are diversified, it is necessary to change the conditions appropriately each time. Therefore, the necessity of changing the conditions has been demanded.

  Therefore, in the prior art, every time the product type is switched, the device for optimizing the base surface depth and the oil supply position is frequently replaced and attached. This work takes time and effort by manpower, and the melt spinning has to be stopped while changing the type, and production stop / recovery work (thread trimming / threading work, etc.) As a result, further labor and production loss (loss due to loss of raw materials and production opportunities) were forced to occur.

  In this way, proposals have been made for simplifying complicated operations by hand at the time of product type switching and making them into devices. For example, in Patent Document 1, when a synthetic fiber is produced by a high-speed spinning method, the melted and spun yarn is uniformly and stably cooled from the spinneret, and the temperature drop in the vicinity of the spinneret and the spinneret is reduced. Synthetic fiber melt spinning apparatus capable of spinning as a good package free of breakage of single yarn and sagging yarn, yielding a synthetic fiber free from fineness unevenness and quality variation The melt spinning method used is disclosed. The effect is that the polyester multifilament yarn melt spinning apparatus and melt spinning method are capable of stably producing the polyester multifilament yarn with no fineness unevenness and variation by the high speed spinning method.

However, the above proposal is a synthetic fiber melt spinning apparatus having a melt extrusion apparatus equipped with a spinneret and an annular cooling device having a cooling air blowing unit for cooling synthetic fibers spun from the spinneret. There is no discussion or suggestion regarding variable depth.
Patent Document 2 discloses a technique for providing a synthetic fiber manufacturing apparatus that includes a conventional complicated machine configuration and manual adjustment, and includes an inexpensive lifting oil metering and discharging nozzle device. The effect is that there is no need to adjust the position of the metering discharge nozzle before and after the yarn tension with cooling air, the frame body of the lifting device is placed under the cooling device, and the lifting device is configured as a double slider. In the case of thick yarn, the entire cooling zone can be used. This is a synthetic fiber provided with a base for discharging synthetic fibers, a cooling device for cooling the discharged fibers, and an oil agent applying device that applies an oil agent to the cooling yarn and can be moved up and down. In this manufacturing apparatus, the oil application device is an oil application device lifting / lowering means capable of moving up and down along a line connecting the center of the base and the offset amount from the center of the base at the lowest position of the oil supply device. Can be effective. However, no examination or suggestion has been made regarding the variation of the base depth.

  Patent Document 3 discloses that in a spinning process using polyester fiber, especially a copolyester polymer, the fluidity of silicone oil applied to the base surface is maintained for a long period of time and the adhesion of dirt near the base discharge hole is suppressed. A melt spinning method is disclosed in which the correction interval can be significantly extended to enable stable continuous operation. This relates to a technique for suppressing contamination of the die discharge hole, and no examination or suggestion has been made regarding the variation of the die surface depth.

  As described above, in fact, research and development have been delayed in spite of the fact that the variable device for the base surface depth and the oil supply position is an important technology. If these technologies are applied to production, it will be groundbreaking, and it will be possible to improve productivity by minimizing loss of production opportunities, as well as producing products with stable yarn production and quality. It becomes possible to supply.

JP 2006-225792 A JP-A-2005-281902 JP 2009-155770 A

  The purpose of the present invention is to produce a good quality and operability without complicated operations such as complicated equipment changes when producing a wide variety of synthetic fibers using the same melt spinning equipment. An object of the present invention is to provide a manufacturing apparatus capable of easily changing the position and finely adjusting the changed position and reducing the production loss by automating the product type switching operation.

The object of the present invention is to provide an extruder for melt-extruding a resin, a heating box for dispensing a polymer extruded from the extruder, and a polymer provided in the heating box and formed into a desired fiber shape. A pack provided with a base, a cooling device that cools a plurality of yarns spun from the base with cooling air, a driving device that allows the cooling device to move in a direction perpendicular to the base surface, and a cooling device that is provided from the bottom of the spinneret A hood that encloses the yarn up to the upper end of the yarn, an oil agent applying device that applies an oil agent to the yarn cooled by the cooling device, and a winding roller that can take up the yarn after the oil agent is applied In a melt spinning apparatus comprising a take-up device, the hood can be arbitrarily expanded and contracted in a direction perpendicular to the die discharge surface between the discharge surface below the spinneret and the upper end of the cooling device. And a synthetic fiber melt spinning apparatus characterized in that the oil agent application device can be arbitrarily moved and held in a direction perpendicular to the spinneret discharge surface from the lower end of the cooling device to the winding roller. Can be achieved.

  According to the synthetic fiber manufacturing apparatus of the present invention, when producing a wide variety of synthetic fibers using the same melt spinning apparatus, the base surface depth and the oil supply position can be easily changed without complicated operations. In addition, the change position can be finely adjusted, good quality and operability can be obtained, and production loss can be reduced by automating the product changeover operation.

It is a schematic process drawing which shows one embodiment of the synthetic fiber manufacturing apparatus of the present invention. It is a schematic front view which shows one embodiment of the nozzle face depth variable apparatus of this invention. It is a cross-sectional view which shows one embodiment of the water vapor | steam supply apparatus for making the air containing water vapor | steam flow in into the food | hood of the base surface depth variable apparatus of this invention. It is a cross-sectional view which shows one embodiment of the food heater for heating the food | hood of the base surface depth variable apparatus of this invention. It is a schematic front view which shows one embodiment in the case of setting the base surface depth of the base surface depth variable apparatus of this invention to arbitrary positions. It is a schematic front view which shows one embodiment in the lowest end position of the nozzle | cap | die surface depth variable apparatus of this invention. It is a schematic side view which shows one embodiment of the oil supply position variable apparatus of this invention. It is a schematic front view which shows one embodiment of the nozzle | cap | die surface depth variable apparatus drive control of this invention.

The synthetic fiber manufacturing apparatus of the present invention, that is, the base surface depth variable device and the oil supply position variable device, are from the bottom surface of the base discharged from the polymer to the upper stage of the cooling device where cooling air for cooling the yarn is blown out. The length, that is, the depth of the die surface, and the position where the oil agent is applied from the lower surface of the die that the polymer discharges, that is, the oil supply position, is automatically and arbitrarily controlled by interlocking control based on the preset condition position and the detected current position. It is a variable device.

Next, the variable mechanism and drive control of the base surface depth / oil supply position variable device will be described.
First, as an example of means for changing the depth of the die surface, a slide rail having an electric cylinder is used as the variable mechanism, a clamp-type stopper is used as the positioning portion, and a double cylinder is used as a means for shutting off the surrounding space. Some hoods are provided with O-ring seals.

  In addition to the examples described above, the variable mechanism uses a servo motor and ball screw, and the positioning unit uses a position detection sensor that stops the drive source at an arbitrary position and determines the position. As described above, an expandable / contractible bellows hood can be preferably used. Of course, even if a fixed-length hood is replaced and replaced, it can of course be used. Therefore, the means for changing the die surface depth is not limited to that described in the above example.

  In addition, as drive control, the position of the optimum base depth for each product type is recorded in the storage unit in advance, and the current position is detected using a sensor or the like with an electric cylinder or slide rail attached. A detection unit is provided, and a control unit is provided for controlling expansion and contraction of the hood to the optimal position based on the stored optimal position and the detected current position. In this way, the current position is accurately detected, and the driving is controlled based on the detected position, thereby finely adjusting and automatically varying the depth of the base.

    Moreover, the water vapor | steam supply apparatus to the inside of a hood may be integrated in the nozzle | cap | die surface depth variable apparatus. This water vapor supply device will be briefly described.

  Generally, in melt spinning of thermoplastic polymers, low-molecular substances contained in the polymer, substances generated by thermal decomposition of the polymer, and inorganic particles such as catalysts and matting agents added in the polymerization stage are spun. , And adheres to the vicinity of the base discharge hole to deteriorate and become a base stain. When this dirt on the base increases, the spun yarn is picked up or bent, and finally the yarn breaks, causing a spinning trouble. The same applies to polyester, and particularly when a polyethylene terephthalate copolymerized with isophthalic acid or polyalkylene glycol is spun, or when a polymer containing a large amount of additives is spun, dirt on the die discharge hole appears remarkably.

  The steam supply device is a device for preventing contamination of the base surface and performing stable yarn production, and is a device for supplying air containing an appropriate amount of water vapor directly under the base discharge surface. Maintains the fluidity of the silicone oil applied to the base surface for a long period of time, suppresses the adhesion of dirt near the base discharge hole, extends the base correction interval, reduces work personnel and production loss, and ensures stable continuous operation. Is possible.

  A hood heater may be incorporated in the base surface depth varying device. This food heater will be briefly described. If the depth of the die surface is shallow, it becomes easy to be influenced by the atmospheric temperature of the spinning chamber, and the die surface temperature is lowered. Here, the spinning temperature of ordinary polyester is generally 270 ° C to 300 ° C. On the other hand, the atmospheric temperature in the spinning chamber is generally 50 ° C. or lower. Therefore, as the depth of the die surface becomes shallower, the die surface is affected by the outside air temperature, i.e., the temperature in the spinning chamber, and the die surface is cooled. And thread breakage occurs frequently. In order to avoid such a state, a hood heater is incorporated in advance in the base surface depth variable device of the present invention so that the base surface temperature does not decrease even if the base surface depth is reduced. By incorporating the hood heater in this way, the temperature in the vicinity of the outlet of the discharge hole can be freely controlled, and it becomes possible to employ the optimum die surface temperature for the corresponding product type.

Next, the variable mechanism and drive control of the oil supply position variable device will be described.
As an example of the means for changing the oil supply position, an oil supply portion engaged with a slide rail having an electric cylinder is provided and the electric cylinder is driven, as in the case of the base surface depth variable device. There are some which make the oiling part variable. At this time, any oiling roller, oiling guide, or the like may be employed for oil supply, and the oil supply is not limited to that described in the above example.

  As for drive control, as with the base surface depth variable device, the optimum oil supply position for each product type is recorded in advance in the storage unit, and a sensor with an electric cylinder or slide rail attached is used. A detection unit for detecting the current position is provided, and a control unit for controlling driving to the optimal position is provided based on the stored optimal position and the detected current position. Of course, there are varieties whose current positions are optimal, but the oil supply position variable device includes a range including these optimal positions.

  In this way, the current position is accurately detected, and the drive is controlled based on the detected position, thereby finely adjusting and automatically changing the oil supply position.

  In addition, the drive control unit of the above-mentioned base surface depth / oil supply position variable device has a storage unit that stores an optimum position in advance so that the optimum conditions can be set in conjunction with each other, and application of the detected oil agent Based on the position of the apparatus and the expansion / contraction position of the hood, a common control unit is provided for controlling the drive so as to move and expand / contract or hold the position of the oil application device and the expansion / contraction position of the hood stored in advance. In this way, by controlling the depth of the die base and the oil supply position in an interlocked manner, product type switching operations can be performed at once, making it possible to change and fine-tune the optimal product conditions suitable for each product type, and to perform production operations. It is possible to reduce labor and production loss without stopping.

  The base surface depth and oil supply position variable device of the present invention can easily change the base surface depth and oil supply position, and since it is equipped with a water vapor supply device and a hood heater, the single yarn fineness of the spun yarn can be adjusted. Thick and thin, little affected by the number of single yarns, and a single yarn fineness can preferably be produced in the range of 0.1 dtex to 20 dtex in terms of drawn yarn. Moreover, if it is the number of single yarns, production from 1 filament to 200 filaments is possible.

Further, the intrinsic viscosity (hereinafter referred to as IV) of the polymer can correspond to a wide range of IV from 0.45 to 1.20. This is because the base surface depth and the oil supply position can be optimized regardless of the spinning temperature, and the base surface temperature can be supplied at the optimum temperature and the appropriate oil supply position.
Moreover, production application is possible in a wide range with respect to the copolymer polymer and the amount of additives. This is due to the fact that the water vapor supply device can be applied under the condition that the depth of the die surface is optimized. If it is polyester, it can be preferably applied to production with almost no exception.

Hereinafter, the present invention will be described in detail. The synthetic fiber that can be produced in the present invention is not particularly limited as long as it is a synthetic fiber that can be melt-spun, such as polyester and polyamide.
For example, as described above, homopolymers, copolymer polymers, pigments, dyes, matting agents, antifouling agents, fluorescent whitening agents, flame retardants, stabilizers, ultraviolet absorbers, lubricants, and the like may be included.

The synthetic fiber used in the present invention may be single-component spinning or composite spinning. In the case of multi-component spinning, examples of the configuration include core-sheath, side-by-side, sea-island composite, and mixed fiber. The cross-sectional shape of the fiber may be an irregular shape such as a circle, a triangle, a flat shape, or a hollow shape.
The target synthetic fiber, single fiber fineness, and number of filaments in the present invention can be appropriately selected according to the purpose.

  Hereinafter, an example of a synthetic fiber manufacturing apparatus and method according to the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic process diagram showing one embodiment of the synthetic fiber production apparatus of the present invention.

  In FIG. 1, the synthetic fiber manufacturing apparatus includes a heating box 1, a pack 2, a base 3, a water vapor supply device 4, a hood heater 5, a base surface depth variable device 6, a storage unit 7 (a base surface depth variable device), and a detection unit. 8 (base surface depth variable device), control unit 9 (base surface depth variable device), drive unit 10 (base surface depth variable device), base surface depth region 11, cooling device 12, oil supply position variable device 13, storage unit 14 (oil supply position variable device), oil detection unit 15 (oil supply position variable device), control unit 16 (oil supply position variable device), drive unit 17 (oil supply position variable device), common control unit 18, winding Rollers 19 and 20 and a winding device 21 are provided. L1 represents the depth of the die surface, L2 represents the oil supply position, and Y represents the spun yarn.

  In FIG. 1, the yarn spun from the discharge hole of the die 3 in a state where the die surface is moistened with air containing water vapor blown from the water vapor supply device 4 and the die surface is appropriately heated by the hood heater 5. The strip Y passes through the base surface depth region 11. In the base surface depth region 11, a base surface depth varying device 6 including a water vapor supply device 4 and a hood heater 5 is attached to the lower end of the heating box 1.

The yarn that has passed through the base surface depth region 11 is cooled by the cooling air blown from the cooling device 12, and after the oil agent is applied by the oil agent oil supply position varying device 13, the yarn is wound through the pair of take-up rollers 19 and 20. It is wound up by the take-up device 21.
Hereinafter, a water vapor supply device, which is a synthetic fiber manufacturing device of the present invention, and a base surface depth variable device provided with a hood heater will be described in detail with reference to FIG.

  FIG. 2 is a schematic front view showing an embodiment of the base surface depth varying device of the present invention.

  In FIG. 2, 22 is a slide rail shaft, 23 is a slider plate (variable depth of base), 24 is a cylinder, 24 ′ is a cylinder piston, 25 is a bracket (variable depth of base), 26 is an upper clamp type stopper, Reference numeral 26 'denotes a lower clamp stopper, 27 denotes an upper hood, 28 denotes a lower hood, 29 denotes an O-ring, and L1 denotes a depth of the base.

  The base surface depth varying device of the present invention includes the following three mechanisms.

(1) Variable mechanism A slider plate 23 and a slider plate 23 engaged with the bearing are fitted to a cylindrical slide rail shaft 22 attached to the lower surface of the heating box in a direction perpendicular to the base surface. The slider plate 23 along with the slider bearing 22 can move in the vertical direction without being displaced in the horizontal direction with respect to the base surface. Further, a cylinder piston 24 ′ of a cylinder 24 provided at a position not interfering with the movable position of the apparatus is fastened to the slider plate 23 via a bracket 25 engaged with the slider plate 23. By raising and lowering 24 ′, the slider plate 23 is raised and lowered in the direction perpendicular to the base surface via the bracket 25. As a result, the upper surface of the cooling device, that is, the lower surface of the slider plate 23 is changed from the lower surface of the base to change the base surface depth L1. Since the upper end of the cooling device 12 is in close contact with the lower surface of the slider plate 23 as described above, it is preferable that the slider plate 23 be bonded with rubber packing or the like so that there is no gap in the contact portion. The cylinder 24 may be driven by compressed air, hydraulic pressure, electric power, etc., but each drive source may be selected depending on the force required for raising and lowering the device and the installation environment of the device. Not specified.
In addition, a sliding mechanism such as a linear guide or a ball spline may be used as the sliding mechanism for performing guidance.

(2) Positioning mechanism The slide rail shaft 22 is provided with clamp-type stoppers 26 and 26 'at two locations on the upper and lower sides with the slider plate 23 interposed therebetween. These stoppers 26, 26 ′ are movable along the slide rail shaft 22 in a direction perpendicular to the base surface, and clamped so as to sandwich the slide rail shaft 22, so that the stoppers 26, 26 ′ are attached to the slide rail shaft 22. It can be fixed at any position along. The upper stopper 26 fixed at an arbitrary position regulates the slide upper end position of the slider plate 23 by pressing the slider plate 23 against the main body of the stopper 26 when the slider plate 23 is raised. The regulated upper end position of the slider plate 23 defines the base surface depth L1 from the lower surface of the base 3 to the lower surface of the slider plate 23. Similarly, the lower stopper 26 ′ is fixed to the lowermost end of the slide rail shaft 22, and regulates the slide lower end position of the slide plate 23 when the slider plate 23 is lowered. The lower stopper 26 ′ is used as a slider plate standby position when preventing the slider plate 23 from dropping and changing the position of the upper stopper 26. Therefore, by moving these stoppers 26 to arbitrary positions on the slide rail shaft 22 and fixing them, the base surface depth L1 can be varied to arbitrary positions. As a method of fixing the stopper, a method of inserting a stopper pin into a hole opened in the slide rail shaft or a fastening fixing with a set screw may be used so that the change of the position of the stopper can be simplified.

(3) Means for shutting off from surrounding space The cylindrical hoods 27, 28 having different inner diameters are provided on the lower surface of the heating box and the upper surface of the slider plate 23, respectively, and the lower hood 28 is inserted into the inner diameter portion of the upper hood 27. It is attached in a heavy cylinder shape. A groove is formed on the inner surface of the upper hood 27 over the entire circumference, and an O-ring 29 is fitted along the groove so that the lower hood 28 can move along with the slider plate 23 in a direction perpendicular to the base surface. However, since the O-ring 29 seals between the two hoods, the yarn Y can be enclosed so as to block the inside of the hood from the surrounding space other than the both end faces of the hood.

The water vapor supply device incorporated in the base surface depth variable device of the present invention will be described.
The water vapor supply device is a device for preventing dirt on the base surface and performing stable yarn production, and is a device for supplying air containing an appropriate amount of water vapor directly below the base discharge surface. In addition to maintaining the fluidity of the silicone oil applied to the base for a long time, it suppresses the adhesion of dirt in the vicinity of the base discharge hole, and extends the base correction interval to enable stable continuous operation.

FIG. 3 is a cross-sectional view showing an embodiment of a water vapor supply device for allowing air containing water vapor to flow into the hood of the base depth varying device of the present invention. In FIG. 3, 1 is a heating box, 2 is a pack, 3 is a base, 27 is an upper hood, 30 is a gas inlet pipe for allowing gas to flow into the hood, 31 is a gas outlet tube, A is a water-containing gas, and Y is a spinning gas. It is a released thread.
The melt-spun polymer is extruded from the pores of the die 3 attached to the lower part of the pack 2 attached to the heating box 1. The spun yarn Y is passed and wound while being gradually cooled by a hood and a cooling device. At this time, air A containing water vapor mixed in advance is introduced into the hood from the upper part of the gas outflow cylinder 31 through the gas inflow pipe 30 and the upper hood 27 to adjust the atmosphere in the hood. In order to make the atmosphere in the hood uniform, the shape of the gas inflow pipe 30 is preferably annular.

The hood heater incorporated in the base surface depth varying device of the present invention will be described.
If the depth of the die surface is shallow, it becomes easy to be influenced by the atmospheric temperature of the spinning chamber, and the die surface temperature is lowered. In general, the spinning temperature of ordinary polyester is generally 270 ° C to 300 ° C. On the other hand, the atmospheric temperature in the spinning chamber is generally 50 ° C. or lower. Therefore, as the depth of the die surface becomes shallower, the die surface is affected by the outside air temperature, i.e., the temperature in the spinning chamber, and the die surface is cooled. And thread breakage occurs frequently. In order to avoid such a state, a hood heater is incorporated in the base surface depth variable device in advance so that the base surface temperature does not decrease even if the base surface depth is reduced. As a result, the temperature of the die discharge hole can be freely controlled by the hood heater, and the optimum die surface temperature for the corresponding product can be adopted.

  FIG. 4 is a cross-sectional view showing an embodiment of a hood heater for heating the hood of the base surface depth varying device of the present invention. In FIG. 4, 1 is a heating box, 2 is a pack, 3 is a base, 5 is a hood heater, 27 is an upper hood, 28 is a lower hood, 32 is a temperature detector, and A 'is a heated gas. The hood heater 5 is an aluminum cast heater, and the upper hood 27 is heated by fixing the cast heater to the outer periphery of the upper hood 27. The hood heater 5 is provided with a temperature detector 32, and the temperature of the hood heater 5 is controlled based on the temperature detected from the temperature detector 32. By heating the upper hood 27 by the hood heater 5, the temperature of the air in the hood is controlled to an arbitrary temperature. The heated air A in the hood heated by the hood heater 5 comes into contact with the surface of the base 3 so that the temperature of the base discharge hole can be set to an arbitrary temperature. As the hood heater, in addition to the aluminum cast heater, a brass cast heater, a band heater, or the like can be considered, but it may be appropriately selected according to the operating temperature, and a specific heater is not specified.

  The present invention is a synthetic fiber manufacturing apparatus, which is attached to the lower end of the heating box of the spinning machine body, and has a base surface depth variable device equipped with a water vapor supply device and a hood heater. The base surface depth can be varied according to an appropriate value for each product type. This is a synthetic fiber manufacturing apparatus.

  As shown in FIG. 1, the base surface depth varying device 6 is disposed at a position immediately above the cooling device 12. The slider plate incorporated in the base surface depth varying device 6 can move up and down in a direction perpendicular to the base surface within a range of 30 to 200 mm. The base surface depth L1 can be varied in the range of 30 to 200 mm, which is equivalent to the elevation of the slider plate, while the yarn is surrounded so as to block the inside of the hood from the surrounding space other than the above. Similarly, when changing the depth of the die surface of the cooling device 12, it is necessary to change the upper position of the cooling device 12 in the same manner.

  FIG. 5 is a schematic front view showing one embodiment in the case where the base surface depth of the base surface depth varying device of the present invention is set to an arbitrary position.

  As shown in FIG. 5, when the synthetic fiber is manufactured, the slider plate 23 of the base surface depth varying device is moved to the upper clamp-type stopper 26 fixed at an arbitrary position of the slide rail shaft 22 as the cylinder piston 24 'is raised. The double hoods 27 and 28 interlocked with the ascent of the slider plate 23 while being stopped against pushing are shrunk while surrounding the yarn so as to cut off the inside of the hood from the surrounding space other than the both end surfaces of the hood, An arbitrary base depth L1 is maintained. Similarly, the cooling device 12 is raised until the upper end of the cooling device 12 is brought into close contact with the lower surface of the slider plate 23, thereby eliminating the gap with the lower surface of the slide plate 23 and maintaining the arbitrary base surface depth L 1. Cool the strip.

  FIG. 6 is a schematic front view showing one embodiment at the lowest end position of the base surface depth varying device of the present invention.

  As shown in FIG. 6, when the base surface depth L1 is varied except when the synthetic fiber is manufactured, the slider plate 23 of the base surface depth varying device moves down the cylinder piston 24 ′ and moves the slide rail shaft 22 to the end. A double cylindrical hood that is interlocked with the lowering of the slider plate 23 extends while standing on and stops at the lower clamp-type stopper 26 ′ fixed at the lower end position, and waits at the lowermost position of the slide rail shaft 22. . By releasing the clamp of the upper clamp-type stopper 26 in this standby position and changing it to an arbitrary position along the slide rail shaft 22, the base surface depth L1 can be varied.

  The present invention further includes a water vapor supply device in the hood of the base surface depth variable device attached to the lower end of the heating box. During the production of synthetic fibers, air containing an appropriate amount of water vapor is supplied into the hood to maintain the fluidity of the silicone oil applied to the base surface for a long period of time and to prevent dirt from adhering to the vicinity of the base discharge hole. It can be extended for stable continuous operation.

In the present invention, a hood heater is provided in the hood of the base surface depth variable device attached to the lower end of the heating box. During the production of synthetic fibers, the inside of the hood is cut off from the surrounding space other than both ends of the hood with a double cylindrical hood, and the hood is heated with a hood heater while minimizing the influence of the room temperature. By controlling the surface temperature to an arbitrary temperature, yarn breakage due to low temperature spinning is prevented and stable continuous operation is possible.
Next, the oil supply position varying device, which is a synthetic fiber manufacturing device of the present invention, will be described in detail with reference to FIG.

FIG. 7 is a schematic side view showing one embodiment of the oil supply position varying device of the present invention.
In FIG. 7, 33 is a slide rail, 34 is a slider, 35 is a slider plate (oil supply position variable device), 36 is an oiling roll, 37 is an oil receiving tray, 38 is an oiling roll cover, and 39 is a bracket (oil supply position changing device). ), 40 is an electric cylinder (oil supply position changing device), 41 is a position sensor (oil supply position changing device), 42 is a cylinder piston position storage section (oil supply position changing apparatus), and 43 is a cylinder piston position control section (oil supply). The oil supply position variable device) is shown.
The oil supply position variable device of the present invention is composed of the following two mechanisms.

(1) A slider 34 is fitted in a slide rail 33 installed in the vertical direction with respect to the variable mechanism base discharge surface, and is slidable along the slide rail 33. By engaging the slider plate 35 with the slider 34, the slider plate 35 can move in the vertical direction together with the slider 34 without being displaced in the horizontal direction with respect to the base discharge surface.

Further, an oiling roll 36, an oil receiving tray 37, and an oiling roll cover 38 for supplying oil to the yarn are unitized and engaged with the slider plate 35, respectively. Therefore, by changing the slider plate 35 in the vertical direction, the unitized oiling roll 36 can also be changed.
The slider plate 35 is moved using an electric cylinder 40 engaged with a lower portion of the slider plate 35 via a bracket 39. The slider plate 35 is moved up and down by the piston of the electric cylinder 40 moving in a direction perpendicular to the die discharge surface. Accordingly, the oiling roll 36 can also be changed, and the oil supply position can be changed.

(2) Drive control mechanism In the electric cylinder 40 that changes the oil supply position, a position sensor 41 that detects the position of the cylinder piston, a cylinder piston position storage unit 42 that can store an arbitrary position in which the cylinder piston position is preset, and A cylinder piston position control unit 43 that can control the position of the cylinder piston is provided. Furthermore, these devices can communicate with each other location information.

First, the current oil supply position is calculated based on the position information detected by the position sensor 41. The cylinder piston position storage unit 42 stores an optimal oil supply position preset for each product type, and an electric cylinder based on the detected current position and the stored optimal oil supply position. The cylinder piston position control unit 43 instructs to drive the electric cylinder so that the motor 40 can be moved. In this way, the drive of the electric cylinder can be controlled, and the oil supply position can be changed to an arbitrary position.
The drive control of the base surface depth varying device which is the synthetic fiber manufacturing apparatus of the present invention will be described in detail with reference to FIG.

FIG. 8 is a schematic front view showing one embodiment of the base surface depth varying device drive control of the present invention.
In FIG. 8, 22 is a slide rail shaft, 23 is a slider plate, 25 is a bracket, 27 is an upper hood, 28 is a lower hood, 29 is an O-ring, 44 is an electric cylinder (base depth variable device), and 45 is a position. A sensor (a base surface depth variable device), 46 indicates a cylinder piston position storage unit (a base surface depth variable device), and 47 indicates a cylinder piston position control unit (a base surface depth variable device).

  The base surface depth varying device of the present invention is composed of the following two mechanisms.

(1) A slider plate 23 and a slider plate 23 engaged with the bearing are fitted on a cylindrical slide rail shaft 22 attached to the bottom surface of the variable mechanism heating box in a direction perpendicular to the base surface. The slider plate 23 along with the slider bearing 22 can move in the vertical direction without being displaced in the horizontal direction with respect to the base discharge surface.

  In addition, cylindrical hoods 27 and 28 having different inner diameters are provided on the lower surface of the heating box and the upper surface of the slider plate 23, respectively, and are attached in a double cylindrical shape so that the lower hood 28 is inserted into the inner diameter portion of the upper hood 27. ing. A groove is formed on the inner surface of the upper hood 27 over the entire circumference, and an O-ring 29 is fitted along the groove so that the lower hood 28 can move along with the slider plate 23 in a direction perpendicular to the base surface. However, since the O-ring 29 seals between the two hoods, the yarn Y can be enclosed so as to block the inside of the hood from the surrounding space other than the both end faces of the hood.

  Furthermore, a cylinder piston of an electric cylinder 44 provided at a position that does not interfere with the movable position of the apparatus is fastened to the slider plate 23 via a bracket 25 that is engaged with the slider plate 23. As the slider moves up and down, the slider plate 23 is lifted and lowered in the direction perpendicular to the base surface via the bracket 25. Accordingly, the upper end of the cooling device, that is, the lower surface of the slider plate 23 is changed from the spinneret discharge surface to change the base surface depth L1.

(2) Drive control mechanism The drive control mechanism of the base surface depth variable device is substantially the same as the drive control mechanism of the oil supply position variable device. Based on the position information detected by the position sensor 45, first the current base surface Depth is calculated. The cylinder piston position storage unit 47 stores an optimal base depth that is set in advance for each product type. Based on the detected current position and the stored optimal base depth, the electric cylinder The cylinder piston position control unit 46 instructs to drive the electric cylinder 44 so as to move 44. In this way, the driving of the electric cylinder 44 can be controlled, and the base surface depth L1 can be changed to an arbitrary position.

  The simultaneous drive control of the oil supply position / base depth varying device which is the synthetic fiber manufacturing apparatus of the present invention will be described in detail with reference to FIG.

A common control unit 18 is installed in the drive control unit of the oil supply position / base depth changing device of the present invention so that the control units 9 and 16 can be controlled simultaneously. This common control unit 18 can communicate with each drive control unit, and based on each detected current position and the optimal oil supply position L2 and base surface depth L1 preset for each product type, respectively. The oil supply position L2 and the base surface depth L1 can be automatically changed to arbitrary positions while interlocking with each other by instructing the drive control unit to drive simultaneously. The present invention is a synthetic fiber manufacturing apparatus and a spinning machine Synthetic fiber manufacturing equipment, which is attached to the lower end of the heating box of the main body, and can be varied while simultaneously interlocking the base surface depth and oil supply position according to the appropriate value for each product type, using the base surface depth variable device and oil supply position variable device. It is.
As shown in FIG. 1, the base surface depth varying device 6 is disposed at a position immediately above the cooling device 12. The slider plate incorporated in the base surface depth varying device 6 can be moved up and down in the direction perpendicular to the base discharge surface within a range of 30 to 200 mm. The base surface depth L1 can be varied in the range of 30 to 200 mm, which is equivalent to the elevation of the slider plate, with the yarn surrounded so as to block the inside of the hood from the surrounding space other than the surface. Similarly, when changing the depth of the die surface of the cooling device 12, it is necessary to change the upper position of the cooling device 12 in the same manner. Furthermore, the oil supply position varying device 13 is arranged at a position directly below the cooling device 12. The slider plate incorporated in the oil supply position varying device 13 can be varied within a range of 1150 to 1750 mm from the base discharge surface. Further, the base surface depth varying device 6 and the oil supply position varying device 13 can be automatically and simultaneously changed to the optimum oil supply position L2 and base surface depth L1 set for each product type.

1: Heating box 2: Pack 3: Base 4: Steam supply device 5: Hood heater 6: Base surface depth variable device 7: Storage unit (base surface depth variable device)
8: Detection part (base depth variable device)
9: Control unit (base depth variable device)
10: Drive unit (base depth variable device)
11: Base depth region 12: Cooling device 13: Oil supply position changing device 14: Storage unit (oil supply position changing device)
15: Detection unit (oil supply position variable device)
16: Control unit (oil supply position variable device)
17: Drive unit (oil supply position variable device)
18: Common control unit 19: Take-up roller (front side)
20: Take-up roller (rear side)
21: Winding device 22: Slide rail shaft 23: Slider plate (base depth variable device)
24: Cylinder 24 ': Cylinder piston 25: Bracket (base depth variable device)
26: Upper clamp type stopper 26 ': Lower clamp type stopper 27: Upper hood 28: Lower hood 29: O-ring 30: Gas inflow pipe 31: Gas outflow pipe 32: Temperature detector 33: Slide rail 34: Slider 35 : Slider plate (oil supply position variable device)
36: Oiling roll 37: Oil receiving tray 38: Oiling roll cover 39: Bracket (oil supply position variable device)
40: Electric cylinder (oil supply position variable device)
41: Position sensor (oil supply position variable device)
42: Cylinder piston position storage unit (oil supply position variable device)
43: Cylinder piston position control unit (oil supply position variable device)
44: Electric cylinder (base depth variable device)
45: Position sensor (base depth variable device)
46: Cylinder piston position storage unit (base depth variable device)
47: Cylinder piston position control unit (base depth variable device)
A: Hydrous gas A ′: Heated gas L1: Base depth L2: Oil supply position Y: Yarn

Claims (7)

  An extruder for melt-extruding the resin, a heating box for dispensing the polymer extruded from the extruder, a pack provided in the heating box and having a die for forming the distributed polymer into a desired fibrous shape, A cooling device that cools a plurality of yarns spun from the base by cooling air, a drive device that enables the cooling device to move in a direction perpendicular to the base surface, and a yarn that is located from the bottom of the spinneret to the upper end of the cooling device A melt spinning apparatus comprising: a hood that surrounds the oil; an oil agent applying device that applies an oil agent to the yarn cooled by the cooling device; and a winding device including a winding roller that can wind the yarn after the oil agent is applied. The hood can be arbitrarily expanded and contracted in a direction perpendicular to the nozzle discharge surface between the discharge surface below the spinneret and the upper end of the cooling device. Melt spinning apparatus of synthetic fibers, characterized in that the movable and held arbitrarily vertically device relative spinneret discharge surface between the up take-preparative roller from the cooling device bottom. The hood has a cylindrical shape, and the entire circumference of the upper end surface of the tube is in contact with either the heating box, the pack, or the base, and the lower end surface of the other tube is in contact with the cooling device and is perpendicular to the base surface. And a guide mechanism for extending and contracting the hood, a positioning portion for holding the extension length of the hood at an arbitrary length, and means for shielding the inside of the hood that extends and contracts from a space other than both end faces of the hood. Item 2. A synthetic fiber melt spinning apparatus according to Item 1.   3. A synthetic fiber melt spinning apparatus according to claim 1, further comprising means for supplying air containing water vapor into the hood.   The synthetic fiber melt spinning apparatus according to any one of claims 1 to 3, wherein a heater is provided on the outer periphery of the hood. A drive unit capable of moving and holding the oil agent applying device in a direction perpendicular to the spinneret discharge surface between the lower end of the cooling device and the take-up roller, a detection unit for detecting the position of the oil agent applying device, and the oil agent applying device In order to move the oil agent to an arbitrary position, the oil agent applying device is moved based on the storage unit that stores the preset arbitrary position, the detected current position of the oil agent applying device, and the position preset in the memory unit. 5. A synthetic fiber melt spinning apparatus according to claim 1, further comprising a control unit that instructs the driving unit to hold the synthetic fiber. A drive unit that can expand and contract in a direction perpendicular to the spinneret discharge surface between the spinneret discharge surface and the upper end of the cooling device, a detection unit that detects the position of the hood, and the hood at an arbitrary position In order to expand and contract, the drive unit is instructed to expand and contract the hood based on a storage unit that stores a preset arbitrary position, and the detected current position of the hood and a preset position in the storage unit. A synthetic fiber melt spinning apparatus according to any one of claims 1 to 5, further comprising: In order to move and expand / contract the oil application device and the hood to arbitrary positions, respectively, based on the detected current position and the position preset in the storage unit, each drive is moved and expanded and held 7. The synthetic fiber melt spinning production apparatus according to claim 6, further comprising a control unit for instructing the unit simultaneously.

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