TW200528594A - Method and apparatus for producing staple fibers - Google Patents

Abstract

A method and an apparatus for producing staple fibers, wherein in a first step a tow is formed from melt spun filaments and deposited into a can, and wherein in a second process step the tows of a plurality of cans in a can creel are withdrawn, treated, and cut to staple fibers. To obtain as much as possible short times of interruption between the first and second process steps, the invention provides for depositing the tow in the first process step directly into the can accommodated in the can creel, with the cans of the can creel being filled one after the other.

Description

200528594 IX. Description of the invention:

C. Technical leadership of the family] I. BACKGROUND OF THE INVENTION The present invention relates to a method for producing short fibers from melt-spun filaments and an apparatus for carrying out the method using 5. [Prior Art 3 Basically, there are two different methods and devices that have been conventionally used to make cut staple fibers. In the first method and apparatus, the staple fibers are manufactured by a rain-step manufacturing method. Among them, most of the filaments are spray-spun from a / 10 polymer melt in the first step and are combined into a tow after cooling. At the end of the first process step, the tow is loaded into a can. In the second step, 'a lot of tows will be drawn out by a processing unit from a plurality of cans contained in a canister. The tows will be combined to form a combined tow, and the rafters will be processed. Finally, Will be cut into short fibers. This two-step method is particularly suitable for processing very coarse total Daniels, such as those larger than 200,000 Daniels. The invention relates to such a method and device. In this two-step process, it is important to temporarily store the tow between the first and second steps f, because it will usually make the majority of the tow in the processing unit in the processing unit. The resulting tow is combined into a combined tow, and further processed. In order to be able to temporarily store the spun tow, they are provided with the following: they will be transferred back and forth between the melt spinning table and the barrel holder in the processing unit by an expensive transfer device. In order to ensure that the can rack has a supply of 2 noodle cans for the second process step, a canister will be provided to store the cans that have been filled. Therefore, the 200528594 conventional method and device for manufacturing staple fiber in two steps requires a large number of coordination and expensive transmission devices and a large area of installation space. In contrast, another conventional method and apparatus is capable of making staple fibers in a single step. In this method, a tow, melt spinning, drawing, curling, and cutting steps will be followed one by one. However, these methods basically have the disadvantage that the yield is small because the tow is drawn from the melt spinning unit and the tow must be drawn by the processing unit. Especially when the total deniers of the tows are relatively thick, the irregularities of the physical properties of the fibers will be very significant. 10 Therefore, an object of the present invention is to provide a method and a device for manufacturing staple fiber in two steps, which can be stored and manufactured in a simple method and with a simple device when converting from the first step to the second step. Tow. Another object of the present invention is to further improve the conventional method and device, so as to process the freshly-formed tow into an end product with as little stopping time as possible. [Summary of the Invention] The above and other objects and advantages of the present invention can be achieved by a method and an apparatus, in which a melt-spun filament is formed into a tow, and the tow is continuously deposited by 20 Inside each barrel in the barrel holder. The tow bundle is drawn from the cans, processed and cut. The present invention is characterized in that it does not require expensive auxiliary equipment to transfer the cans to the melt spinning units. In the first step, the present invention can deposit the tow directly in a barrel, which is contained in a barrel holder. The interaction between the 200528594 melt spinning unit and the bobbin will form a smaller combined production line in a better way, where the bobbin will form a common interface between the melt spinning unit and the processing unit. In order to increase the number of continuous processing procedures as much as possible, a further improvement of the present invention is particularly advantageous. It is adjacent to a first canister with a canister having a plurality of cans. Therefore, one of the better variations of this method is that the tow in the first step can be deposited in the can of the first can, and the tow in the second step can be deposited in the can of the second can. Come unwinded and pulled out. With this structure, it will be able to achieve an almost continuous operation, so that the cans of the first 10 cans and the cans of the second cans can be filled with tows in turn, and the tows can be taken in turns It is withdrawn from the cans of the second and the first cans. Especially in the second step, this can result in a very short pause time, as the cans in the can rack need not be replaced. To continue its process, it is only necessary to change the barrel holders, and this can be completed in a short time. 15 In order to fill cans contained in any position in a barrel holder, according to an advantageous improvement of the invention, the spinning unit will include a movable deposition device which is supported and guided by a guide Above the can. With the deposition device, it is possible to deposit the tow at any desired position of the can holder in a canister contained therein. 20 The tow can be deposited by a oscillating motion applied to the deposition device, or a rocking motion applied to a barrel holder housed in the barrel holder. This will ensure a high level of filling with a comparable filling density. However, it is preferred that the tow motion of the tow be generated by the deposition device or a conveying device provided to be movable relative to the deposition device. 200528594 Set at -feed ^ = place it-a particularly advantageous improvement system, so that the deposition device attached ..., # will be forwarded after the tow is drawn from the spinning plate, and # 密 此 放 良 will be particularly advantageous The two bundles for filling the cans with a large number of cans are moved under a sufficient tension for a large distance. With this structure, the Lai system of the child product device can be used to establish a pulling force. The device for carrying out the two-step manufacturing method for {walk 4, 乂 μ as far as possible is structured as finely as possible. The better improvement is to extract the spinning plate of the spinning unit above the cylinder holder. This design allows the spinnerets to be mounted in the center of the barrel frame and / or to form an offset relationship. With this laminated design, it is possible to reduce the number of turns required to deposit 10 15 of the tow. A further improvement of the present invention is that each of the cans in the canister is provided with an extraction guide, which can be reduced ^ 4 to move between the _ idle waiting position and an operating position, and the special M # 翁 + Ｍ Broken ground The tows are returned by the cans and, on the other hand, the fully open sections of the cans can be used for filling. The drawings briefly explain the following method and device of the present invention will be described in detail with reference to the embodiments of the present invention as shown in the accompanying drawings, in which: Fig. 1 is a schematic top view of the layout of the device of the present invention; The figure is a more detailed side view of the device; Figure 3 is a front view of the cylinder holders of the reader; and Figure 4 is a top view of the cylinder holders. Detailed description of the preferred embodiment As shown in FIG. 1, the device includes a spinning unit, and two bobbins 2.1 and 2-2 200528594 are arranged in the spinning unit and the processing unit 3. The spinning unit ^

For most filaments at the spinning position, they will be combined into a tow U by the extraction system. Through this extraction "9, the tow advances to the first stacking device 10, which is set above the cans 2.1 and 2.2. A The two cans 2" and 2.2 each contain a plurality of cans i3. In the example shown in Fig. I, the deposition device U) is arranged on the canister 21 and is being filled in the first can 13 of the canister. The deposition device 10 can be moved to each of the cans of the rack 2 ", and the beam area is in each can 13 iXl 〇1〇I The cans in the can 2.2 have been filled full. The tow in each of the cans 13 of the bobbin 22 will be extracted by the processing unit 3 and combined into a "continuous bundle M". Among them, most of the guide rollers 22 and the like are arranged on the wheel exit side of the drum frame. The processing unit 3 contains an extraction system and a drawing thread and additional processing means to cut the tow 14 into suitable short fibers. 15 In the schematic device shown in Figure 1, the cans 13 and the like of the canister 2 "are being filled with a tow, and the cans 13 of the canister 2.2 are being emptied. Extract the tow. After all the cans of the can rack 21 are filled and all the cans 13 of the can rack 2.2 are cleared, the configuration will be changed. The tow 14 drawn out and added by the processing unit 3 is instead composed of the tow drawn from each of the cans 13 of the canister 20 · 2. At the same time, the tow 13 of the bobbin 22 will be filled with the tow 11. $

A special advantage of the method and apparatus of the present invention is that the two-step operation can be performed almost continuously with only a short pause time. Lu Qizhen saves considerable time by avoiding time-consuming transfer steps. Moreover, ^ one T 200528594 frames 2.1 and 2.2 are adjacent and juxtaposed, steps. Therefore, it is necessary to form a small drum rack device that takes into account any transfer path or lifting lift, and the spinning unit 1 or the processing unit 3 adjacent to or stacked 3 Different views of a square early yoke device capable of implementing the present invention are schematically shown. Λ Figure Λ, Figure 3 is the front view of the tube frame. Figure 4 is a side view of the entire production line. Non-explanatory reference picture Vt. 4 is a top view of the tube frame. Except for a drawing, the following description will apply to the drawing. The overall implementation of the embodiment of the present invention is shown in FIG. 2. Dan θ 乂 谇 乂 谇, 、, 10 10 15-Spinning ^ Second process step of the method of the present invention, this embodiment includes Γ second for performing the second step 'which also includes-processing unit 3. 4 As early as 1 and the processing unit 3, two adjacent canisters 2 ″ and 22 will be provided. For the spinning-tow U, this spinning unit! Contains most of the spinnerets .6.3. In this embodiment, the number of the spinning plates is merely an example. This type: spinning can contain most spinning boards. Each -spinning plate 6.Κ3 is equipped with a -spinning pump 5.Κ3. The spinning pumps 5 ″ ~ 53 The spinning fruits 5.1 · 5.3 will be connected to an extruder core 溶 through the dissolving material distribution cloth ㈣, and the square 4 plates 6.1 ~ 6.3 are in a ring shape and can squeeze out a lot Arranged in a circle ^ filament surface into each multifilament. Downstream of these spinning plates 6.1 to 6.3, there are various outflow quenching devices 7H3 and the corresponding spinning plates are arranged in a concentric relationship. X ° The outflow quenching devices 7.1 to 7.3 are connected to a cooling air supply. Circuit (not shown) to generate a cooling airflow to cool the multifilaments. ^ Lubricating devices are provided at the downstream of each quenching device 7 · 1 ~ 7.3. 丨 ~ 8.3 Temple 'each can bundle these multifilaments. Along the direction of the advancement of the multifilaments, there are 20 200528594 5 10 15-a pumping system 9 is provided with the lubricating devices 81 ~ 8 J. The system 9 includes a plurality of driving rollers and is arranged in a row. Xi // extraction At the mouth area, it is better to have a lubricating roller to enter the extraction system 9-tow U. Linshan ~ 12.3 Combination Rollers are provided downstream of the extraction system 9 and can feed the wire to a deposition device 10, for example. A guidance system 15 cooperates with the deposition device so that it can be selectively positioned above the cartridge holder 2.1 or 2.2. Among them, the spinning unit i and the bobbin holders 2.1 and 2.2 are stacked one above the other. The deposition device includes a conveying device 20, which can transport the tow η into a cylinder holder 2n. The conveying device 20 is combined with a moving device 19, which enables the conveying device 20 to perform a pivoting motion. With this, it is possible to deposit the silk uniformly on: the entire open cross section of the barrel 13. This type of sedimentary set was previously disclosed in the case of the patent EPU69370A2. The public information is attached hereto: 2 in: detailed description is omitted. The setting of the guidance system 15 and the drum frame will be described in more detail later.

The tow stored in the can 13 of the second can 2.2 is drawn out by the processing unit 3. The processing unit 3 is generally referred to as a fiber production line, and contains most of the 20 processing devices capable of stretching and processing the tow that has been combined into a tow of 14: tow. The configuration of the processing device 3 shown in FIG. 2 is an example of the history and number of processing elements, which only shows the basic processing elements required for the second process step. A drawing system 25 will pull out the tows from the cans 丨 3 of the dianjia 2_2 11 200528594 11. In this process, the tows 11 are combined into a tow 14 and advance through the guide roller 22 and the deflection roller 31 and the like. A curling device 27 is provided downstream of the stretching system 25. That is, the crimping device 27 is made into a stuffing box crimping mechanism, and the tow is pushed into a stuffing 5 box by a feeding device. As for the feeding device, in the case of two-dimensional curl, a roller can be used. This curling device 27 is provided with a drying device 28, a force adjusting device 29, and a final cutting device 30. The use of this drying device depends on the type of polymer. To manufacture the cut staple fiber, a tow 11 is melt-spun in the first process step by using the spinning unit 1 in the manner of the embodiment 10 shown in FIG. 2. Among them, a thermoplastic is melted by the extruder 4 and fed to each of the spinning pumps 5.1 to 5.3 and the like. The spinning pumps 5.1 to 5.3 feed the plastic melt to the corresponding spinning plates 6.1 to 6.3, etc. under a pressure. The spinning plates 6.1 to 6.3 each contain a large number of spinning holes, so one filament can be pressed out of each spinning hole. This type of spinning plate can have up to thousands of spinning holes. The filaments extruded from the respective spinning plates 6.1 to 6.3 are taken together by the extraction device 9. During this process, the filaments will be cooled, lubricated, and combined into multifilaments 12.1 ~ 12.3. Before entering the extracted system 9, the multifilaments 12.1 to 12.3 are combined into a tow 11. The tow 11 is advanced by the extraction device 9 20 to the deposition device 10 through a guide roller 21. The deposition device 10 is mounted on a guide system 15 and can be selectively moved to each of the cans 13 in the canister 2.1. The deposition device can enter the tow 11 into the can 13 of the can 2.1. At the same time, the processing device 3 extracts the tow from the adjacent bobbin 2.2 to perform the second step of the present invention. In this step, the tow 1 丨 deposited in the can 13 of the can 12 200528594 frame 2.2 will be pulled out by the drawing system 2 5 and passed through the guide roller 22 and the deflection roller 31, etc. The drawing system is combined into a tow 14 before. The tow 14 is advanced through the fiber production line, and in the process, it is drawn in a drawing system 25. Therefore, it is preferable to provide a plurality of heated and unheated drawing rollers 26 and the like. After the drawing step, the tow is pre-fed by a setting device (not shown). In this process, heat treatment can also be performed or inserted first or multiple times. After the setting step, the tow 14 enters the crimping device 27. The crimped tow is then advanced through the tension adjusting device 29 into the cutting device, which cuts the tow 14 into short fibers of a predetermined length. The staple fiber thus produced can then be advanced, for example, pneumatically to a baling press to be compacted into a bundle. This is the second process step for completing the method of the present invention. In order to illustrate the coordination and cooperation between the first step and the second step, the device used to fill and empty the cylinder holders 2 · 1 # 〇22 will be changed with reference to the drawing 15 and will be described in detail later. The following description is applicable to the two pictures, unless the Lingzhi that HI is specified. 20

'5 wood · kaikou 2.2 system is arranged in parallel and there is only a small interval between the equipment. In this device, each of the cans 13 contained in the canisters 21 and 2 · 2 has two parallel lines: in the canister. The top of the frame and 2.2, each canister is provided-such as the 23 'which is mounted on-the free end of the pivoting material. The extraction guide 2 is constituted by an eyelet or a roller, for example. The pivot arm 24 is pivotably movable relative to ㈣ 2.1 and 2.2. The pivoting material can move the extraction guide ㈣ to the position M near the U side of the can, or-at the position of the can 13 as a wood. # To be filled-when the can 13 is provided, it has an extraction guide 2: 13 200528594 _ The arm 24 will move to the idle position, as shown by the state of the barrel holder. When the tow is to be pulled out by the can π of the canister 2.2, all the extraction guides 23 are moved to the operating position by their revolving arms 24, as shown by the state of the canister 22. Although the tow is to be drawn from each of the cans 13 of the canister 2.2, the tow 1] t 5 will be slidably guided through the extraction guide 23 and led out by the processing unit 13. When the can rack 2. ^ can 13 is to be filled, the deposition device 10 will be held by the guidance system 15 floor. In this embodiment, the guide bow (the system is composed of a guide frame ^, which will extend above the barrel frame h and 2.2. The guide frame ^ is equipped with a bracket 17 which can be reciprocated by a drive (not shown) Move in the guide frame. The PD bracket 17 is provided with a linear guide 18 in which one of the holders 33 of the deposition device can move. The holder 33 can be driven by a driver (not shown) along the The guide 18 is driven and traverses when the bracket 17 moves longitudinally. Therefore, by using the coordinated operation of the movement of the bracket Π and the movement of the holder 33 in the linear guide 18, it is possible to deposit the deposition device 10 Move to the cans 15 and 13 of the cans 21 and 22. 20

The holding member 33 is equipped with a conveying device 20 which is in the form of two yarn shakers. ―, The device can be carried out by-pivoting bracket-㈣ movement, its difficult = to move to the holding member 13 by the movement 1 set 19 »4 rotation device with a pivoting bracket It has been disclosed in the Ep 1 A2 case: the public information is attached here for reference. When the tow is to be deposited, the carousel 20 and the holding fairy will be used as a pendulum motion in the filling section above the :: strip 13. This will result in a uniformly deposited tow u in each region of the can. ^ Feeding system 2 is provided at the upper part of the 2G-Garment-Feeding System 21, which can feed 14 200528594 tow 11 into the conveying device 20. Preferably, the feeding system 21 includes a plurality of driving rollers. In this way, it is possible to obtain an appropriate tension in the tow without being affected by the operation of the deposition set 10. The deposition device 10 shown in Figs. 2 to 4 is only an example, and a feasible way of depositing the tow in a barrel 13 is not shown in the J direction. In terms of management, the deposition device can be composed of a fixed conveying device 20 and an additional guiding device capable of swinging to deposit the tow in the can. That is, it can also combine a deposition device 10 with a barrel traverse structure. In this case, the conveying device 20 can also be made fixed. When filling ^ " inch 'the 10-barrel will perform a swing motion in the barrel holder. To

However, basically, it can use any device that can guide the tow when the tow is fed to the wheel and the device to make the tow line to have a larger filling density. Fill the tow evenly.

In their structure and arrangement, the embodiments shown in Figs. 1 to 4 are merely examples. In particular, the embodiment of Fig. 4 can also add other processing arrangements and similar structural equivalents. The present invention includes all devices and methods for nightmares, in which a tow composed of a plurality of filaments is deposited in a can of a barrel holder, and the first process step and the second process step Store temporarily. 20 [Brief description of the drawings] FIG. 1 is a schematic top view of the layout of the device of the present invention; FIG. 2 is a more detailed side view of the device; FIG. 3 is a front view of the cartridge holder of the device; Figure 4 is a top view of the cylinder holders. 15 200528594 [Description of main component symbols] 1 ··· spinning unit 2.1, 2.2 ·· cylinder holder 3 ··· processing unit 4… extractor 5.1 ~ 5.3 ·· spinning pump 6.1 ~ 6.3 ·· spinning Plates 7.1 ~ 7.3 ... Quenching device 8.1 ~ 8.3 ... Lubricating device 9 ... Extraction system 10 ... Deposition device 11 ... Tow 12.1 ~ 12.3 ... Multi-filament 13 ... Can 14 ... Tow 15 ... Guide system 16 ... Guide frame 17 ... Bracket 18 ... Linear guide 19 ... Movement device 20 ... Transport device 21, 22 ... Guide roller 21 ... Reading system 22 ... Guide roller 23 ... Extraction guide 24 ... Pivot arm 25 ... Stretch System 26 ... drawing roller 27 ... curling device 28 ... drying device 29 ... tension adjusting device 30 ... cutting device 31 ... deflection roller 32 ... melt distributor 33 ... holding member

16

Claims (1)

200528594 10. Scope of patent application: 1. A method for manufacturing short fibers, including the following steps: making a tow of a melt-spun fiber filament; continuously depositing the tow on each piece contained in a barrel holder 5 cans; and the tow is extracted from each can of the can frame and the tow is processed and cut. 2. The method of claim 1 in the patent application, wherein the extraction step is performed after the tow has been deposited in all cans of the canister, and the tow is continuously deposited at the same time Inside each canister in a second canister. 3. —A method for manufacturing short fibers, comprising the following steps: making a tow of melt-spun filaments; performing it in turn (1) continuously depositing the tow in each of the first 15 cylinder holders Inside the can, and (2) continuously depositing the tow in each can contained in the second can; and when the tow is deposited in the can of the first can, The tow is extracted from the can of the second canister, and when the tow is deposited in the can of the second canister, the tow is extracted from the can of the first canister. 20 4. The method according to item 3 of the patent application, wherein the tow is deposited in each can to be filled by a movable deposition device, and the deposition device is supported above the corresponding can frame. 5. The method according to item 4 of the patent application, wherein during the deposition step, a rocking motion is applied to the tow by the deposition device. 200528594 6. The method according to item 5 of the patent application, wherein the tow motion of the tow is generated by a movable installation conveying device. 7. The method according to item 3 of the patent application, wherein in each deposition step, the can used to receive the tow will perform a rocking motion in the can frame. 5 8. A device for manufacturing short fibers, comprising: a melt spinning unit can melt a plurality of filaments and aggregate them to form a tow; a deposition device can continuously deposit the tow to each container; Packed into a plurality of cans in a bobbin holder; and 10 a processing unit can extract a tow from each can of the bobbin holder, and process and cut the tow. 9. The device according to item 8 of the scope of patent application, further comprising a second bobbin holder adjacent to the aforementioned bobbin holder, and the two bobbin holders are arranged relative to the melt spinning unit so that the cans of the two bobbin holders can The tows are filled in turns. 15 10. The device according to item 9 of the scope of patent application, wherein the two-barrel rack is arranged relative to the processing unit so that the tow in the can of the two-barrel rack can be withdrawn in turn. 11. The device according to item 10 of the patent application scope, wherein the melt spinning unit includes a movable deposition device supported and moved by a guide system 20 provided above the cylinder holders. 12. The device according to item 11 of the patent application scope further comprises a moving device which enables the deposition device to perform a rocking motion while sinking the tow. 13. The device according to item 12 of the patent application, wherein the moving device is provided with a conveying device which can feed the tow into a corresponding can. 200528594 14. The device in the scope of patent application No. 10 further includes a can traverse mechanism which can swing the cans of each can when the tow is deposited. 15. For the device of the scope of application for patent No. 8, wherein the melt-spinning unit contains the majority of the spinning plates, the filaments can be extruded, and an extraction system can extract the filaments from the 5 spinning plates and collect them. To form a tow, the tow is sent to the deposition device. 16. If the device under the scope of patent application No. 15 further includes a feeding device, the tow can be fed from the extraction system to the deposition device. 17. For the device under the scope of application for patent No. 16, wherein the spinning 10 plate and the extraction system of the melt spinning unit are arranged upstream of the cylinder holders, and the spinning plates are installed to correspond to the The center of the barrel holder may form an offset relationship with it. 18. If the device of the scope of application for patent No. 10, further includes an extraction guide arranged on each can of the canisters, and each extraction guide can be between an empty waiting position 15 and an operating position Moving, this operating position can facilitate extraction of the tow from the cans.