CN112725957A - Integrated production method of polyphenylene sulfide modified material - Google Patents
Integrated production method of polyphenylene sulfide modified material Download PDFInfo
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- CN112725957A CN112725957A CN202011522054.6A CN202011522054A CN112725957A CN 112725957 A CN112725957 A CN 112725957A CN 202011522054 A CN202011522054 A CN 202011522054A CN 112725957 A CN112725957 A CN 112725957A
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- polyphenylene sulfide
- rack
- fiber
- drafting
- integrated production
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/04—Melting filament-forming substances
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/76—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products
- D01F6/765—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products from polyarylene sulfides
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/14—Details
- D01H1/36—Package-shaping arrangements, e.g. building motions, e.g. control for the traversing stroke of ring rails; Stopping ring rails in a predetermined position
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/30—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensation products not covered by indexing codes D10B2331/02 - D10B2331/14
- D10B2331/301—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensation products not covered by indexing codes D10B2331/02 - D10B2331/14 polyarylene sulfides, e.g. polyphenylenesulfide
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention relates to the technical field of spinning, in particular to an integrated production method of a polyphenylene sulfide modified material. The technical scheme is as follows: an output shaft of a rotation driving mechanism of a processing and finishing mechanism is connected with a winding drum in a sleeved mode; still install on the mounting bracket and remove actuating mechanism, remove actuating mechanism's output shaft and have the gear, be fixed with two expansion brackets on the reel, be connected with the rack on the expansion bracket, be connected with the trigger mechanism who is used for driving rack removal on the expansion bracket. An integrated production method of polyphenylene sulfide modified materials comprises the following steps: s1: dehydrating and heating polyphenylene sulfide resin for melting; s2: metering and spinning the molten raw materials; s3: winding the ejected fiber; s4: the fiber is subjected to drafting, heat setting and double twisting. The invention provides integrated production equipment and method for polyphenylene sulfide modified materials, which can enable fibers to be uniformly wound on a winding drum.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to an integrated production method of a polyphenylene sulfide modified material.
Background
In chemical fiber production, fiber-forming polymers that have a melting point below the decomposition temperature and are meltable to form a thermally stable melt are typically spun by melt spinning. The main steps include preparing spinning melt; extruding the melt through a spinning machine to form melt trickle; cooling and solidifying the melt trickle to form nascent fiber; oiling and winding the nascent fiber; the wound nascent fiber is stretched, shaped and twisted to form the artificial fiber capable of being processed in industrial textile.
Polyphenylene Sulfide (PPS) fiber is a novel high-performance synthetic fiber researched and developed in the last eighties of the world, has excellent heat resistance, can be used for a long time at the temperature of 200 ℃, and is insoluble in any chemical solvent. Can be used for a long time under the severe environmental conditions. The polyphenylene sulfide fiber in the prior art is mostly spun by a melt spinning technology and then is industrially processed.
The invention patent with the patent application number of CN200610012937.6 discloses a method and equipment for manufacturing a polyphenylene sulfide long fiber, which comprises the steps of dehydrating polyphenylene sulfide resin, heating and melting, metering and spinning, winding and post-processing to prepare the polyphenylene sulfide long fiber.
However, in the above-described apparatus, when the polyphenylene sulfide long fiber is produced, if the fiber is not wound uniformly on the winding drum, the distance between the fiber on the winding drum of the integrated production line and the first draft roller is constantly changed, and the tension of the fiber in the draft roller is changed. In the drafting process, the fiber tension degree is changed, so that the fiber drafting rate of the same drafting roller cannot be kept constant, the fiber thickness is uneven, and the drafting degree of a product is difficult to accurately control.
Disclosure of Invention
The invention overcomes the defects of the prior art, provides the integrated production equipment and the integrated production method for the polyphenylene sulfide modified material, which can enable the fiber to be uniformly wound on the winding drum, and solves the problem that the drafting rate of the subsequent drafting process cannot be accurately controlled due to the uneven winding of the fiber on the winding drum.
In order to solve the technical problems, the invention adopts the following technical scheme:
the integrated production equipment for the polyphenylene sulfide modified material comprises a fiber generating mechanism, a processing and finishing mechanism and a drafting mechanism which are sequentially arranged, wherein fibers generated by the fiber generating mechanism sequentially pass through the processing and finishing mechanism and the drafting mechanism; the processing and finishing mechanism comprises a mounting frame, a rotation driving mechanism is mounted on the mounting frame, an output shaft of the rotation driving mechanism is connected with a winding drum in a sleeved mode, a clamping groove is formed in the winding drum, a clamping block is arranged on the output shaft of the rotation driving mechanism, and the clamping block is clamped in the clamping groove; still install on the mounting bracket and remove actuating mechanism, remove actuating mechanism's output shaft has the gear, is fixed with two expansion brackets on the reel, is connected with the rack on the expansion bracket, and two racks branch locate the both sides of gear, fixed connecting rod between two racks, be connected with the trigger mechanism who is used for driving rack removal on the expansion bracket.
The polyphenylene sulfide resin is dehydrated, heated and melted by a fiber generating device, and then metered and spun. The fiber filaments sprayed out of the spinning device are arranged on the processing and arranging device and then enter the drafting mechanism for drafting. The clamping block on the output shaft of the rotation driving mechanism can be clamped with the clamping groove in the winding drum, and when the output shaft of the rotation driving mechanism rotates, the clamping block pushes the winding drum to rotate synchronously. Therefore, the fiber can be wound on the winding drum when the winding drum rotates. The trigger mechanism can drive the racks to move, and because the connecting rod is fixed between the two racks, the two racks move synchronously, and only one rack is meshed with the gear at the same time. When the moving driving mechanism drives the gear to rotate, the gear drives one of the racks to move. Because the expansion bracket is fixed on the winding drum and the rack is connected on the expansion bracket, the rack can drive the expansion bracket and the winding drum to synchronously move. When the trigger mechanisms beside the two racks act in turn, the two racks realize reciprocating movement, and the winding drum can realize reciprocating movement. The speed of movement around the reel remains constant due to the determined gear ratio between the gear and the rack. When the winding drum moves back and forth at a constant speed, the fixture block on the output shaft of the rotation driving mechanism stretches out and draws back in the clamping groove of the winding drum, so that the winding drum moves in a composite mode of constant-speed rotation and constant-speed back and forth movement without interference, and the fibers are uniformly laid on the surface of the winding drum layer by layer. Because the fibre is evenly around rolling up on the reel, and because around the reel at reciprocating motion, the position of the pull-out section of fibre on the reel can remain unchanged, then the interval between fibre to first draft roller is unchangeable all the time, and the tensile force of fibre at draft roller department remains unchanged, then the draft roller can carry out even draft to the fibre, and the draft rate of fibre can accurate control.
As a preferable scheme of the present invention, the trigger mechanism includes an electromagnet, the electromagnet is fixed on the telescopic frame, the rack is made of iron, the end of the rack is provided with a trigger switch, the electromagnet is electrically connected with the trigger switch, the mounting frame is further provided with an electromagnetic relay, one of the trigger switches is electrically connected with a normally open contact of the electromagnetic relay, the other trigger switch is electrically connected with a normally closed contact of the electromagnetic relay, and the trigger switches on the two racks are located on opposite sides.
When the gear drives the rack to move in place, the trigger switch at the end part of the rack is triggered, the electromagnet at the corresponding side is switched on and attracts the rack, the rack moves close to the electromagnet, and the rack is separated from the gear. Because one of the trigger switches is electrically connected with the normally open contact of the electromagnetic relay, and the other trigger switch is electrically connected with the normally closed contact of the electromagnetic relay, when the electromagnet on one side is switched on, the electromagnet on the other side is switched off. Because the connecting rod is connected between the two racks, the rack on the other side is meshed with the gear in time, and the telescopic frame and the winding drum move reversely. Therefore, the winding drum can reciprocate at a constant speed, and the fiber can be uniformly wound on the winding drum.
As a preferable aspect of the present invention, a pressing mechanism for pressing the trigger switch is mounted on the mounting bracket. After the pressing mechanism is installed, the position of the pressing mechanism is kept inconvenient, the rack is in a moving state under the driving of the rack, when a trigger switch on the rack is contacted with the pressing mechanism, the trigger switch is triggered, an electromagnet electrically connected with the trigger switch is switched on, and the on-off timeliness of the trigger switch is ensured.
As a preferable scheme of the invention, the pressing mechanism comprises a lantern ring, a pressing frame is sleeved in the lantern ring, the end part of the pressing frame faces the rack, and a locking screw for locking the pressing frame is connected to the lantern ring in a threaded manner. The pressing frame can move in the lantern ring, and after the pressing frame is moved in place, the pressing frame can be locked by the locking screw, and the position of the pressing frame can be accurately adjusted. After the position of the pressing frame is adjusted, the contact position of the trigger switch on the rack and the pressing frame is changed, so that the moving distance of the rack is adjusted, and the width range of the winding on the winding drum is conveniently and accurately controlled and limited.
As a preferable scheme of the invention, the bottom of the rack is provided with a slide bar, the telescopic frame is provided with a sliding groove, and the slide bar is sleeved in the sliding groove. The rack is adsorbed by the electromagnet and the in-process that removes, and the draw runner slides in the spout all the time, guarantees the stability and the accuracy of position that the rack removed, guarantees that the rack of being close to the tooth of the gear can mesh with the gear is accurate.
As a preferred scheme of the invention, the bottom of the telescopic frame is provided with a limiting strip, the mounting frame is provided with a limiting groove, and the limiting strip is sleeved in the limiting groove. The spacing groove can be spacing to spacing, and then the expansion bracket removes more steadily to the expansion bracket can not take place the skew, has guaranteed the accuracy of rack position correspondingly.
As a preferable scheme of the present invention, the output shaft of the rotation driving mechanism is provided with a driving pulley, the mounting frame is further provided with a guide roller, the guide roller is provided with a driven pulley, and the driving pulley and the driven pulley are in transmission connection through a belt. When the rotation driving mechanism drives the winding drum to rotate, the driving belt wheel on the rotation driving mechanism drives the driven belt wheel to rotate through the belt, and then the guide roller can synchronously rotate. If necessary, the diameter ratio of the driving pulley to the driven pulley can be set to a certain value to ensure that the guide roller has a certain rotation speed so that the fiber is not wound while moving from the guide roller to the winding drum.
As a preferable scheme of the present invention, the fiber generating mechanism includes a drying device, a screw extruder, and a spinning device, which are sequentially arranged, the drafting mechanism includes a drafting device, a heat setting device, and a two-for-one twisting device, which are sequentially arranged, and the drafting device includes three pairs of drafting rollers and two drafting hot plates disposed between the rollers. The drying device can dehydrate and dry the polyphenylene sulfide resin, and the screw extruder can melt and extrude the polyphenylene sulfide resin. The raw materials in the molten state are spun by a spinning device to prepare fibers. After the fiber is wound, the fiber is sequentially subjected to drafting, heat setting and two-for-one twisting to obtain the product.
An integrated production method of polyphenylene sulfide modified materials comprises the following steps:
s1: dehydrating and heating polyphenylene sulfide resin for melting; heating and melting are carried out by adopting a three-zone sectional heating method, wherein the heating temperature of one zone is 160-200 ℃; the heating temperature of the second zone is 200-300 ℃; the heating temperature in the three zones is 300-400 ℃;
s2: metering and spinning the molten raw materials; metering the pressure of the metering pump for spinning is 15-30 Mpa;
s3: winding the ejected fiber; when winding, the winding drum rotates at a constant speed and reciprocates at a constant speed to wind the fiber;
s4: the fiber is subjected to drafting, heat setting and double twisting.
The raw materials are heated in a three-zone sectional heating mode, so that the melting process of raw material slices is balanced and thorough, the internal temperature of a melting material is uniform, the quality of the generated nascent fiber is stable and balanced, the subsequent drafting process is facilitated, and the fiber is not easy to break. The polyphenylene sulfide raw material is dehydrated by adopting a vacuum drying method, so that the drying time is shortened, and the moisture removal rate is greatly improved compared with that of normal-pressure drying dehydration. According to the invention, various parameters of post-processing procedures are set according to the polyphenylene sulfide raw material and the processing characteristics, so that the quality of the polyphenylene sulfide long fiber product is ensured. When the fiber is wound, the winding drum rotates at a constant speed and reciprocates at a constant speed to wind the fiber, so that the constant tension force of the fiber during drafting is ensured, and the drafting rate is conveniently and accurately controlled.
In a preferred embodiment of the present invention, in step S1, the polyphenylene sulfide resin is dehydrated by a vacuum drying dehydration method, wherein the vacuum gauge pressure is-0.5-0 MPa, the vacuum dehydration temperature is 80-200 ℃, and the water content of the dehydrated resin is lower than 0.01%.
Compared with the prior art, the invention has the beneficial effects that:
the trigger mechanism can drive the racks to move, and because the connecting rod is fixed between the two racks, the two racks move synchronously, and only one rack is meshed with the gear at the same time. When the moving driving mechanism drives the gear to rotate, the gear drives one of the racks to move. Because the expansion bracket is fixed on the winding drum and the rack is connected on the expansion bracket, the rack can drive the expansion bracket and the winding drum to synchronously move. When the trigger mechanisms beside the two racks act in turn, the two racks realize reciprocating movement, and the winding drum can realize reciprocating movement. The speed of movement around the reel remains constant due to the determined gear ratio between the gear and the rack. When the winding drum moves back and forth at a constant speed, the fixture block on the output shaft of the rotation driving mechanism stretches out and draws back in the clamping groove of the winding drum, so that the winding drum moves in a composite mode of constant-speed rotation and constant-speed back and forth movement without interference, and the fibers are uniformly laid on the surface of the winding drum layer by layer. Because the fibre is evenly around rolling up on the reel, and because around the reel at reciprocating motion, the position of the pull-out section of fibre on the reel can remain unchanged, then the interval between fibre to first draft roller is unchangeable all the time, and the tensile force of fibre at draft roller department remains unchanged, then the draft roller can carry out even draft to the fibre, and the draft rate of fibre can accurate control.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the finishing mechanism;
FIG. 3 is a partial block diagram of the present invention;
fig. 4 is a schematic structural view of the pressing mechanism.
In the drawings, 1-mounting frame; 2-a rotation drive mechanism; 3-winding the reel; 4-a movement drive mechanism; 5-a gear; 6-a fiber generating mechanism; 7-a drafting mechanism; 11-a limiting groove; 12-a guide roller; 21-a fixture block; 22-a driving pulley; 31-a card slot; 32-a telescopic frame; 33-a rack; 34-a connecting rod; 35-a trigger mechanism; 36-a pressing mechanism; 61-a drying device; 62-screw extruder; 63-a spinning device; 71-a drafting device; 72-a heat setting device; 73-a two-for-one twisting device; 121-a driven pulley; 321-a chute; 322-a limit bar; 331-a slide bar; 351-an electromagnet; 352-trigger switch; 353-an electromagnetic relay; 361-collar; 362-a pressing frame; 363-locking screws; 711-drafting rollers; 712-drafting hot plate.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 4, the integrated production equipment for polyphenylene sulfide modified material of the present invention comprises a fiber generation mechanism 6, a processing and finishing mechanism and a drafting mechanism 7, which are sequentially arranged, wherein the fibers generated by the fiber generation mechanism 6 sequentially pass through the processing and finishing mechanism and the drafting mechanism 7; the processing and finishing mechanism comprises an installation frame 1, a rotation driving mechanism 2 is installed on the installation frame 1, an output shaft of the rotation driving mechanism 2 is connected with a winding drum 3 in a sleeved mode, a clamping groove 31 is formed in the winding drum 3, a clamping block 21 is arranged on an output shaft of the rotation driving mechanism 2, and the clamping block 21 is clamped in the clamping groove 31; still install on the mounting bracket 1 and remove actuating mechanism 4, the output shaft of removing actuating mechanism 4 has gear 5, is fixed with two expansion brackets 32 on the reel 3, is connected with rack 33 on the expansion bracket 32, and two racks 33 divide and locate the both sides of gear 5, fixed connecting rod 34 between two racks 33, is connected with the trigger mechanism 35 that is used for driving rack 33 and removes on the expansion bracket 32.
The polyphenylene sulfide resin is dehydrated, heated and melted by a fiber generating device, and then metered and spun. The fiber filaments sprayed from the spinning device 63 are arranged in the processing and arranging device and then enter the drafting mechanism 7 for drafting. The latch 21 on the output shaft of the rotation driving mechanism 2 can be engaged with the latch slot 31 in the winding drum 3, so that when the output shaft of the rotation driving mechanism 2 rotates, the latch 21 pushes the winding drum 3 to rotate synchronously. Therefore, the fiber can be wound around the winding drum 3 when the winding drum 3 rotates. The trigger mechanism 35 can drive the racks 33 to move, and because the connecting rod 34 is fixed between the two racks 33, the two racks 33 move synchronously, and only one rack 33 is meshed with the gear 5 at the same time. When the gear 5 is driven to rotate by the movement driving mechanism 4, the gear 5 drives one of the racks 33 to move. Since the telescopic frame 32 is fixed on the winding drum 3 and the rack 33 is connected to the telescopic frame 32, the rack 33 can drive the telescopic frame 32 and the winding drum 3 to move synchronously. When the trigger mechanisms 35 beside the two racks 33 act in turn, the two racks 33 realize reciprocating movement, and the winding drum 3 can realize reciprocating movement. Due to the determined gear ratio between the gear wheel 5 and the rack 33, the speed of movement of the winding drum 3 remains unchanged. When the winding drum 3 moves back and forth at a constant speed, the fixture block 21 on the output shaft of the rotation driving mechanism 2 stretches out and draws back in the clamping groove 31 of the winding drum 3, so that the winding drum 3 moves in a composite motion of constant speed rotation and constant speed back and forth movement without interference, and the fibers are uniformly laid on the surface of the winding drum 3 layer by layer. Since the fiber is uniformly wound on the winding drum 3, and since the winding drum 3 moves back and forth, the position of the fiber pulling section on the winding drum 3 can be kept unchanged, the distance between the fiber and the first drafting roller 731 is always unchanged, the tension of the fiber at the drafting roller 731 is kept unchanged, the drafting roller 731 can uniformly draft the fiber, and the draft ratio of the fiber can be accurately controlled.
Wherein, rotate actuating mechanism 2 including rotating the motor, the output shaft that rotates the motor has the rotation reduction gear, rotates the motor and all installs on mounting bracket 1 with the rotation reduction gear, on the output shaft of rotating the reduction gear was located to the winding drum 3 cover. The mobile driving mechanism 4 comprises a mobile motor, an output shaft of the mobile motor is connected with a mobile speed reducer, the mobile motor and the mobile speed reducer can be arranged on the mounting frame 1, and the gear 5 is connected to an output shaft of the mobile speed reducer.
Specifically, the triggering mechanism 35 includes an electromagnet 351, the electromagnet 351 is fixed on the telescopic frame 32, the rack 33 is made of iron, the triggering switch 352 is installed at the end of the rack 33, the electromagnet 351 is electrically connected with the triggering switch 352, the mounting frame 1 is further provided with an electromagnetic relay 353, one triggering switch 352 is electrically connected with a normally open contact of the electromagnetic relay 353, the other triggering switch 352 is electrically connected with a normally closed contact of the electromagnetic relay 353, and the triggering switches 352 on the two racks 33 are located on the opposite side.
When the gear 5 drives the rack 33 to move to the right position, the trigger switch 352 at the end of the rack 33 is triggered, the electromagnet 351 at the corresponding side is powered on and attracts the rack 33, the rack 33 moves close to the electromagnet 351, and the rack 33 is separated from the gear 5. Since one of the trigger switches 352 is electrically connected to the normally open contact of the electromagnetic relay 353 and the other trigger switch 352 is electrically connected to the normally closed contact of the electromagnetic relay 353, the electromagnet 351 on one side is turned on, and the electromagnet 351 on the other side is turned off. Due to the connecting rod 34 connected between the two racks 33, the rack 33 on the other side is engaged with the gear 5 in time, and the telescopic frame 32 and the winding drum 3 move reversely. Therefore, the winding drum 3 can reciprocate at a constant speed, and the fiber can be uniformly wound on the winding drum 3.
Further, a pressing mechanism 36 for pressing the trigger switch 352 is mounted on the mounting bracket 1. After the pressing mechanism 36 is installed, the position of the pressing mechanism is inconvenient to keep, the rack 33 is in a moving state under the driving of the rack 33, when the trigger switch 352 on the rack 33 is contacted with the pressing mechanism 36, the trigger switch 352 is triggered, the electromagnet 351 electrically connected with the trigger switch 352 is switched on, and the on-off timeliness of the trigger switch 352 is ensured.
Furthermore, the pressing mechanism 36 includes a collar 361, a pressing frame 362 is sleeved in the collar 361, an end of the pressing frame 362 faces the rack 33, and a locking screw 363 for locking the pressing frame 362 is screwed on the collar 361. The pressing frame 362 can move in the collar 361, and after the pressing frame 362 is moved to the position, the pressing frame 362 can be locked by the locking screw 363, so that the position of the pressing frame 362 can be accurately adjusted. After the position of the dispensing pressing frame 362 is adjusted, the contact position of the trigger switch 352 on the rack 33 and the pressing frame 362 is changed, so that the moving distance of the rack 33 is adjusted, and the width range of the winding on the winding drum 3 is conveniently and accurately controlled and limited.
Furthermore, a sliding strip 331 is disposed at the bottom of the rack 33, a sliding slot 321 is disposed on the telescopic frame 32, and the sliding strip 331 is sleeved in the sliding slot 321. In the process that the rack 33 is adsorbed by the electromagnet 351 and moves, the sliding strip 331 always slides in the sliding groove 321, so that the moving stability and the position accuracy of the rack 33 are ensured, and the rack 33 close to the gear 5 can be accurately meshed with the gear 5.
Furthermore, the bottom of the telescopic frame 32 is provided with a limiting strip 322, the mounting frame 1 is provided with a limiting groove 11, and the limiting strip 322 is sleeved in the limiting groove 11. Spacing groove 11 can carry on spacingly to spacing 322, then expansion bracket 32 removes more steadily to expansion bracket 32 can not take place the skew, has guaranteed the accuracy in rack 33 position correspondingly.
Furthermore, a driving pulley 22 is installed on an output shaft of the rotation driving mechanism 2, a guide roller 12 is also installed on the installation frame 1, a driven pulley 121 is installed on the guide roller 12, and the driving pulley 22 is in transmission connection with the driven pulley 121 through a belt. The guide roller 12 can rotate synchronously when the rotation driving mechanism 2 drives the winding drum 3 to rotate and the driving pulley 22 on the rotation driving mechanism 2 drives the driven pulley 121 to rotate through the belt. If necessary, the diameter ratio of the driving pulley 22 to the driven pulley 121 may be set to a certain value to ensure that the guide roller 12 has a certain rotational speed so that the fiber is not wound while moving from the guide roller 12 to the winding drum 3.
The fiber generating mechanism 6 comprises a drying device 61, a screw extruder 62 and a spinning device 63 which are sequentially arranged, the drafting mechanism 7 comprises a drafting device 71, a heat setting device 72 and a two-for-one twisting device 73 which are sequentially arranged, and the drafting device 71 comprises three pairs of drafting rollers 711 and two drafting hot plates 712 arranged between the rollers. The drying device 61 can dehydrate and dry the polyphenylene sulfide resin, and the screw extruder 62 can melt and extrude the polyphenylene sulfide resin. The molten raw material is spun by a spinning device 63 to produce fibers. After the fiber is wound, the fiber is sequentially subjected to drafting, heat setting and two-for-one twisting to obtain the product.
An integrated production method of polyphenylene sulfide modified materials comprises the following steps:
s1: dehydrating and heating polyphenylene sulfide resin for melting; heating and melting are carried out by adopting a three-zone sectional heating method, wherein the heating temperature of one zone is 160-200 ℃; the heating temperature of the second zone is 200-300 ℃; the heating temperature in the three zones is 300-400 ℃;
s2: metering and spinning the molten raw materials; metering the pressure of the metering pump for spinning is 15-30 Mpa;
s3: winding the ejected fiber; when winding, the winding drum 3 rotates at a constant speed and reciprocates at a constant speed to wind the fiber;
s4: the fiber is subjected to drafting, heat setting and double twisting.
The raw materials are heated in a three-zone sectional heating mode, so that the melting process of raw material slices is balanced and thorough, the internal temperature of a melting material is uniform, the quality of the generated nascent fiber is stable and balanced, the subsequent drafting process is facilitated, and the fiber is not easy to break. The polyphenylene sulfide raw material is dehydrated by adopting a vacuum drying method, so that the drying time is shortened, and the moisture removal rate is greatly improved compared with that of normal-pressure drying dehydration. According to the invention, various parameters of post-processing procedures are set according to the polyphenylene sulfide raw material and the processing characteristics, so that the quality of the polyphenylene sulfide long fiber product is ensured. When winding, the winding drum 3 rotates at a constant speed and reciprocates at a constant speed to wind the fiber, so that the constant tension force when the fiber is drafted is ensured, and the draft ratio is conveniently and accurately controlled.
In step S1, the polyphenylene sulfide resin is dehydrated by vacuum drying dehydration method, the vacuum gauge pressure is-0.5-0 Mpa, the vacuum dehydration temperature is 80-200 ℃, and the water content of the dehydrated resin is lower than 0.01%.
Claims (10)
1. The integrated production equipment for the polyphenylene sulfide modified material is characterized by comprising a fiber generating mechanism (6), a processing and finishing mechanism and a drafting mechanism (7) which are sequentially arranged, wherein fibers generated by the fiber generating mechanism (6) sequentially pass through the processing and finishing mechanism and the drafting mechanism (7); the processing and arranging mechanism comprises a mounting frame (1), a rotation driving mechanism (2) is mounted on the mounting frame (1), an output shaft of the rotation driving mechanism (2) is connected with a winding drum (3) in a sleeved mode, a clamping groove (31) is formed in the winding drum (3), a clamping block (21) is arranged on the output shaft of the rotation driving mechanism (2), and the clamping block (21) is clamped in the clamping groove (31); still install on mounting bracket (1) and remove actuating mechanism (4), the output shaft that removes actuating mechanism (4) has gear (5), is fixed with two expansion brackets (32) on reel (3), is connected with rack (33) on expansion bracket (32), and the both sides of gear (5) are located respectively to two rack (33), fixed connecting rod (34) between two rack (33), is connected with trigger mechanism (35) that are used for driving rack (33) and remove on expansion bracket (32).
2. The polyphenylene sulfide modified material integrated production equipment as claimed in claim 1, wherein the trigger mechanism (35) comprises an electromagnet (351), the electromagnet (351) is fixed on the telescopic frame (32), the rack (33) is made of iron, a trigger switch (352) is installed at the end of the rack (33), the electromagnet (351) is electrically connected with the trigger switch (352), an electromagnetic relay (353) is further installed on the mounting frame (1), one trigger switch (352) is electrically connected with a normally open contact of the electromagnetic relay (353), the other trigger switch (352) is electrically connected with a normally closed contact of the electromagnetic relay (353), and the trigger switches (352) on the two racks (33) are located on opposite sides.
3. The integrated production equipment for polyphenylene sulfide modified material as claimed in claim 2, wherein the mounting rack (1) is provided with a pressing mechanism (36) for pressing the trigger switch (352).
4. The polyphenylene sulfide modified material integrated production equipment as claimed in claim 3, wherein the pressing mechanism (36) comprises a collar (361), a pressing frame (362) is sleeved in the collar (361), the end of the pressing frame (362) faces the rack (33), and a locking screw (363) for locking the pressing frame (362) is connected to the collar (361) in a threaded manner.
5. The integrated production equipment for polyphenylene sulfide modified materials as claimed in claim 1, wherein a slide bar (331) is arranged at the bottom of the rack (33), a sliding groove (321) is arranged on the expansion bracket (32), and the slide bar (331) is sleeved in the sliding groove (321).
6. The integrated production equipment for polyphenylene sulfide modified materials as claimed in claim 1, wherein the bottom of the expansion bracket (32) is provided with a limiting strip (322), the mounting bracket (1) is provided with a limiting groove (11), and the limiting strip (322) is sleeved in the limiting groove (11).
7. The integrated production equipment for polyphenylene sulfide modified materials as claimed in claim 1, wherein the output shaft of the rotation driving mechanism (2) is provided with a driving pulley (22), the mounting frame (1) is further provided with a guide roller (12), the guide roller (12) is provided with a driven pulley (121), and the driving pulley (22) is in transmission connection with the driven pulley (121) through a belt.
8. The integrated production equipment for polyphenylene sulfide modified materials according to any one of claims 1 to 7, wherein the fiber generation mechanism (6) comprises a drying device (61), a screw extruder (62) and a spinning device (63) which are arranged in sequence, the drafting mechanism (7) comprises a drafting device (71), a heat setting device (72) and a two-for-one twisting device (73) which are arranged in sequence, and the drafting device (71) comprises three pairs of drafting rollers (731) and two drafting hot plates (732) arranged between the rollers.
9. An integrated production method of polyphenylene sulfide modified materials is characterized by comprising the following steps:
s1: dehydrating and heating polyphenylene sulfide resin for melting; heating and melting are carried out by adopting a three-zone sectional heating method, wherein the heating temperature of one zone is 160-200 ℃; the heating temperature of the second zone is 200-300 ℃; the heating temperature in the three zones is 300-400 ℃;
s2: metering and spinning the molten raw materials; metering the pressure of the metering pump for spinning is 15-30 Mpa;
s3: winding the ejected fiber; when winding, the winding drum (3) rotates at a constant speed and reciprocates at a constant speed to wind the fiber;
s4: the fiber is subjected to drafting, heat setting and double twisting.
10. The integrated production method of polyphenylene sulfide modified material as claimed in claim 9, wherein in step S1, the polyphenylene sulfide resin is dehydrated by vacuum drying dehydration method, the vacuum gauge pressure is-0.5-0 Mpa, and the vacuum dehydration temperature is 80-200 ℃.
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| CN112725957B (en) | 2021-10-22 |
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