CN111636107B - Polyglycolic acid liquid crystal nascent fiber heat treatment device and method - Google Patents
Polyglycolic acid liquid crystal nascent fiber heat treatment device and method Download PDFInfo
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- CN111636107B CN111636107B CN202010473173.0A CN202010473173A CN111636107B CN 111636107 B CN111636107 B CN 111636107B CN 202010473173 A CN202010473173 A CN 202010473173A CN 111636107 B CN111636107 B CN 111636107B
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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
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
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Abstract
The invention discloses a polyglycolic acid liquid crystal nascent fiber heat treatment device and a polyglycolic acid liquid crystal nascent fiber heat treatment method, which comprises a heat treatment tank and a material receiving and discharging assembly arranged above the heat treatment tank, wherein the heat treatment tank comprises a first heat treatment area, a second heat treatment area and a third heat treatment area which are sequentially connected, adjacent heat treatment areas are divided by a partition plate, a guide wheel is further arranged above the partition plate, the material receiving and discharging assembly comprises a fixed support, a first rotating support and a second rotating support, the first rotating support and the second rotating support are respectively hinged to two ends of the fixed support, a winding wheel is arranged at one end of the rotating support, a guide wheel is arranged at the other end of the rotating support, a wire pressing device for pressing fibers is further arranged on the fixed support, and the wire pressing device also comprises a guide wheel. The invention can carry out rapid and efficient heat treatment on the polyglycolic acid liquid crystal nascent fiber, has high automation degree in the whole working process, and can realize continuous operation. Through the treatment of the three heat treatment areas, the fiber structures of the polyglycolic acid liquid crystal nascent fibers are further orderly arranged, and the tensile strength is improved.
Description
Technical Field
The invention relates to a polyglycolic acid liquid crystal nascent fiber heat treatment device and method, and belongs to the technical field of polyglycolic acid liquid crystal nascent fiber processing.
Background
Polyglycolic acid (PGA) is an ideal completely biodegradable material, can be completely degraded within 1-3 months, is non-toxic and harmless, and the final degradation products are carbon dioxide and water, and has been certified as a safe biodegradable plastic material in the united states, european union and japan.
PGA is mainly applied to high-end medical fields such as absorbable surgical sutures and the like at present, and is imported from America and Japan. Has good biocompatibility, gas barrier property and machinability. As a medical material, polyglycolic acid has good biocompatibility which is a prerequisite, and simultaneously certain mechanical property and thermal property are required, and because polyglycolic acid nascent fiber in the prior art is generally produced by heating, extruding and cooling forming, the mechanical property, especially the tensile property is relatively lacked. Polyglycolic acid can also improve its mechanical properties by heat treatment like most metal materials, but polyglycolic acid generally has a long length, a relatively low tensile strength per se, and a roll shape in a stored state, and therefore a heat treatment apparatus is required to be relatively high, and therefore a polyglycolic acid liquid crystal nascent fiber heat treatment apparatus having a high degree of automation and a high treatment speed capable of uniformly heating fibers has been required in the prior art.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a polyglycolic acid liquid crystal nascent fiber heat treatment device and a polyglycolic acid liquid crystal nascent fiber heat treatment method, and solve the technical problems of low efficiency and nonuniform heating in a polyglycolic acid liquid crystal nascent fiber heat treatment process in the prior art.
In order to achieve the above object, the present invention adopts the following technical solutions:
a polyglycolic acid liquid crystal nascent fiber heat treatment device is characterized by comprising a heat treatment tank and a material receiving and discharging assembly arranged above the heat treatment tank, wherein the heat treatment tank comprises a first heat treatment area, a second heat treatment area and a third heat treatment area which are sequentially connected, the space between the first heat treatment area and the second heat treatment area and the space between the second heat treatment area and the third heat treatment area are all divided by a partition plate, a guide wheel is also arranged above the partition plate, and the guide wheel comprises a plurality of guide grooves which are arranged side by side;
the winding and unwinding assembly comprises a fixed support and a first rotating support and a second rotating support which are hinged to the two ends of the fixed support respectively, an unwinding wheel is arranged at one end of the first rotating support, a guide wheel is arranged at the other end of the first rotating support, a winding wheel is arranged at one end of the second rotating support, a guide wheel is arranged at the other end of the second rotating support, a wire pressing device used for pressing fibers is further arranged on the fixed support, and the wire pressing device also comprises a guide wheel.
In a preferred embodiment of the present invention, the polyglycolic acid liquid crystal nascent fiber thermal treatment device comprises a pressing line cylinder connected to the fixed support, a power output end of the pressing line cylinder is provided with a plurality of guide wheels, and the plurality of guide wheels of the pressing line cylinder are respectively arranged on two sides of the isolation plate.
In a preferred embodiment of the present invention, the polyglycolic acid liquid crystal nascent fiber heat treatment device is further provided with a rotary cylinder for driving the first rotary support and the second rotary support to rotate, between the fixed support and the first rotary support and between the fixed support and the second rotary support.
As a preferable mode of the present invention, the polyglycolic acid liquid crystal nascent fiber heat treatment device is characterized in that the first rotating bracket and the second rotating bracket are further provided with a first tension sensor and a second tension sensor respectively, the first tension sensor is arranged between the unwinding wheel and the guide wheel connected to the first rotating bracket, the second tension sensor is arranged between the winding wheel and the guide wheel connected to the second rotating bracket, the first tension sensor is connected to the unwinding wheel control device, and the second tension sensor is connected to the winding wheel control device.
In a preferred embodiment of the present invention, the polyglycolic acid liquid crystal nascent fiber heat treatment device is characterized in that the second rotating bracket is further provided with a degreasing nozzle, and the degreasing nozzle is connected to the high-pressure air generating device.
In a preferred embodiment of the present invention, the polyglycolic acid liquid crystal nascent fiber heat treatment device is further provided with a cooling nozzle in the fixing bracket.
In a preferred aspect of the present invention, the polyglycolic acid liquid crystal nascent fiber heat treatment device is characterized in that the cooling nozzle is provided directly above the guide wheel above the partition plate.
In a preferred embodiment of the present invention, the polyglycolic acid liquid crystal nascent fiber heat treatment device is characterized in that the degreasing nozzle comprises an upper degreasing nozzle and a lower degreasing nozzle, and the upper degreasing nozzle and the lower degreasing nozzle are arranged in a crossing manner.
A heat treatment method of a polyglycolic acid liquid crystal nascent fiber heat treatment device comprises the following steps:
the fibers on the unwinding wheel sequentially pass through all the guide wheels and then are connected to the winding wheel;
under the condition that the product is separated from the heat treatment tank, the temperatures of the heat-conducting media in the first heat treatment area, the second heat treatment area and the third heat treatment area are respectively adjusted to: 245-255 ℃, 295-315 ℃ and 270-250 ℃ and keeping the temperature constant;
the first rotating bracket and the second rotating bracket immerse the fibers into a heat treatment medium;
operating the thread pressing device to enable a thread guide wheel of the thread pressing device to press the fibers;
and operating the unwinding wheel and the winding wheel to rotate, opening the oil removing nozzle, and adjusting the unwinding speed and the winding speed of the unwinding wheel and the winding wheel according to the tensile strength of the fibers by the first tension sensor and the second tension sensor.
In a preferred embodiment of the present invention, the heat treatment medium is vegetable oil.
The invention achieves the following beneficial effects:
compared with the prior art, the method can be used for quickly and efficiently carrying out heat treatment on the polyglycolic acid liquid crystal nascent fiber, the automation degree of the whole working process is high, and continuous operation can be realized. Through the treatment of the three heat treatment areas, the fiber structures of the polyglycolic acid liquid crystal nascent fibers are further orderly arranged, and the mechanical properties, particularly the tensile strength, of the polyglycolic acid liquid crystal nascent fibers are improved.
Drawings
FIG. 1 is a front view of the overall structure of the present invention;
FIG. 2 is a front view of the guide wheel of the present invention;
the meaning of the reference symbols in the figures: 1-heat treatment tank; 11-a first heat treatment zone; 12-a second heat treatment zone; 13-a third heat treatment zone; 2-a separation plate; 3-a guide wheel; 31-a guide groove; 4-rotating the first bracket; 41-a rotating cylinder; 5-unwinding wheel; 6-fixing a bracket; 61-a cooling nozzle; 7-a line pressing cylinder; 8, a first tension sensor; 801-tension sensor two; 9-oil removal nozzle; 91-upper oil removing nozzle; 92-lower oil removal nozzle; 401-rotating the bracket two; 501-a winding wheel; 801-tension sensor two.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1: the embodiment discloses a polyglycolic acid liquid crystal nascent fiber heat treatment device, which comprises a heat treatment tank 1 and a material receiving and discharging assembly arranged above the heat treatment tank 1, wherein the heat treatment tank 1 comprises a first heat treatment area 11, a second heat treatment area 12 and a third heat treatment area 13 which are sequentially connected, the first heat treatment area 11 and the second heat treatment area 12 and the third heat treatment area 13 are all divided by a partition plate 2, and a guide wheel 3 is further arranged above the partition plate 2, as shown in fig. 2: the guide wheel 3 comprises several guide grooves 31 arranged side by side.
Receive and release the material subassembly and include fixed bolster 6 and articulate in runing rest one 4, runing rest two 401 at fixed bolster 6 both ends respectively, the one end of runing rest one 4 is equipped with unreels wheel 5, and the other end is equipped with leading wheel 3, and the one end of runing rest two 401 is equipped with rolling wheel 501, and the other end is equipped with leading wheel 3, and fixed bolster 6 still is equipped with and is used for pressing fibrous cord grip, and cord grip also includes leading wheel 3. Preferably, the line ball device includes the line ball cylinder 7 of connecting in fixed bolster 6, and the power take off end of line ball cylinder 7 is equipped with leading wheel 3, and the line ball device is a plurality of, and a plurality of line ball device's leading wheel 3 sets up respectively in the both sides of division board 2. Therefore, the fibers can be tightly attached to the guide wheel 3, the fibers are prevented from slipping from the guide groove 31, and the contact length of the fibers and the heat conduction oil is increased.
The first rotating bracket 4 and the second rotating bracket 401 of the embodiment are driven by the rotating cylinder 41, the rotating cylinder 41 is installed on the fixed bracket 6, and the other ends of the two rotating cylinders 41 are respectively connected to the first rotating bracket 4 and the second rotating bracket 401.
Because polyglycolic acid liquid crystal nascent fiber's tensile strength is not very good, in order to avoid the condition of taking place the disconnected material, also guarantee simultaneously that the fibre can be in the tensioning condition always, avoid lax, the runing rest one 4 of this embodiment, runing rest two 401 still are equipped with tension sensor one 8, tension sensor two 801 respectively, and tension sensor one 8 sets up in unreeling wheel 5 and connects between runing rest one 4's leading wheel 3, and tension sensor two 801 sets up between wind-up wheel 501 and the leading wheel 3 who connects in runing rest two 401. The first tension sensor 8 is connected to the unwinding wheel control device, the second tension sensor 801 is connected to the winding wheel control device, and the unwinding wheel control device and the winding wheel control device are motors, such as servo motors and stepping motors, for controlling the rotation of the unwinding wheel 5 and the winding wheel 501. And adjusting the rotating speeds of the unwinding wheel 5 and the winding wheel 501 in real time according to the detected magnitude of the limiting tension.
In order to accelerate the cooling speed of the fiber, the fixing bracket 6 is further provided with a cooling nozzle 61, and whether the cooling nozzle 61 is opened or not and the size of the opening are determined according to the specific process of the heat treatment. The cooling nozzles 61 are preferably arranged directly above the guide wheel 3 above the dividing plate 2.
The second 401 of runing rest of this embodiment still is equipped with deoiling nozzle 9, deoiling nozzle 9 is connected in high-pressure air generating device, deoiling nozzle 9 includes deoiling nozzle 91, lower deoiling nozzle 92, go up deoiling nozzle 91, the relative cross arrangement of lower deoiling nozzle 92, relative setting means deoiling nozzle 91, the relative setting of the air-out end of lower deoiling nozzle 92, cross arrangement means deoiling nozzle 91, the air-out end of lower deoiling nozzle 92 will be rubbed away, avoid appearing the phenomenon of blowing. The degreasing nozzle 9 is used for removing oil from the fibers after being heat-treated, and simultaneously plays a role in cooling.
The embodiment also discloses a heat treatment method of the polyglycolic acid liquid crystal nascent fiber heat treatment device, which comprises the following steps:
and heat treatment media are added into each heat treatment area, and the heat treatment media can be vegetable oil with good heat conductivity and no harm to human bodies.
The fibers on the unwinding wheel 5 sequentially pass through all the guide wheels 3 and then are connected to the winding wheel 501;
under the condition that the product is separated from the heat treatment tank 1, the temperatures of the heat-conducting mediums in the first heat treatment zone 11, the second heat treatment zone 12 and the third heat treatment zone 13 are respectively adjusted to be as follows: 245-255 ℃, 295-315 ℃ and 270-250 ℃ and keeps constant. Then, the rotary cylinder 41 is controlled to rotate the first support 4 and the second support 401, and the fibers are immersed into the heat treatment medium; the thread press is then operated so that the guide rollers 3 of the thread press the fibres while ensuring that the fibres enter all the guide grooves 31.
The unwinding wheel 5 and the winding wheel 501 are operated to rotate, the oil removing nozzle 9 is opened, and the first tension sensor 8 and the second tension sensor 801 adjust the unwinding speed of the unwinding wheel 5 and the winding speed of the winding wheel 501 according to the tensile strength of the fibers.
After the heat treatment is completed, the first rotating bracket 4 and the second rotating bracket 401 are rotated to be separated from the heat treatment medium by contraction of the rotating cylinder 41.
For the prior art, the embodiment can carry out rapid and efficient heat treatment on polyglycolic acid liquid crystal nascent fibers, the automation degree of the whole working process is high, and continuous operation can be realized. Through the treatment of the three heat treatment areas, the fiber structures of the polyglycolic acid liquid crystal nascent fibers are further orderly arranged, and the mechanical properties, particularly the tensile strength, of the polyglycolic acid liquid crystal nascent fibers are improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The polyglycolic acid liquid crystal nascent fiber heat treatment device is characterized by comprising a heat treatment tank (1) and a material receiving and discharging assembly arranged above the heat treatment tank (1), wherein the heat treatment tank (1) comprises a first heat treatment area (11), a second heat treatment area (12) and a third heat treatment area (13) which are sequentially connected, the first heat treatment area (11) and the second heat treatment area (12) as well as the second heat treatment area (12) and the third heat treatment area (13) are divided by a partition plate (2), guide wheels (3) are further arranged above the partition plate (2), and all the guide wheels (3) comprise a plurality of guide grooves (31) which are arranged side by side;
the winding and unwinding assembly comprises a fixed support (6), a first rotating support (4) and a second rotating support (401) which are respectively hinged to two ends of the fixed support (6), one end of the first rotating support (4) is provided with an unwinding wheel (5), the other end of the first rotating support is provided with a guide wheel (3), one end of the second rotating support (401) is provided with a winding wheel (501), the other end of the second rotating support is provided with the guide wheel (3), the fixed support (6) is further provided with a wire pressing device for pressing fibers, and the wire pressing device also comprises the guide wheel (3);
and a rotary cylinder (41) for driving the first rotary support (4) and the second rotary support (401) to rotate is further arranged between the fixed support (6) and the first rotary support (4) and between the fixed support (401) and the second rotary support (401).
2. The polyglycolic acid liquid crystal nascent fiber heat treatment device according to claim 1, characterized in that the line pressing device comprises a line pressing cylinder (7) connected to the fixed support (6), the power output end of the line pressing cylinder (7) is provided with a guide wheel (3), the line pressing device is provided with a plurality of line pressing devices, and the guide wheels (3) of the line pressing devices are respectively arranged at two sides of the isolation plate (2).
3. The polyglycolic acid liquid crystal nascent fiber heat treatment device according to claim 1, characterized in that the first rotating support (4) and the second rotating support (401) are further provided with a first tension sensor (8) and a second tension sensor (801), respectively, the first tension sensor (8) is arranged between the unwinding wheel (5) and the guide wheel (3) connected to the first rotating support (4), the second tension sensor (801) is arranged between the winding wheel (501) and the guide wheel (3) connected to the second rotating support (401), the first tension sensor (8) is connected to the unwinding wheel control device, and the second tension sensor (801) is connected to the winding wheel control device.
4. The polyglycolic acid liquid crystal nascent fiber heat treatment device according to claim 3, characterized in that the second rotating bracket (401) is further provided with an oil removal nozzle (9), and the oil removal nozzle (9) is connected to a high-pressure air generating device.
5. The polyglycolic acid liquid crystal nascent fiber heat treatment device according to claim 1, characterized in that the fixed support (6) is further provided with a cooling nozzle (61).
6. The polyglycolic acid liquid crystal nascent fiber heat treatment device according to claim 5, wherein the cooling nozzle (61) is disposed directly above the guide wheel (3) above the partition plate (2).
7. The polyglycolic acid liquid crystal nascent fiber heat treatment device according to claim 4, characterized in that the oil removing nozzle (9) comprises an upper oil removing nozzle (91) and a lower oil removing nozzle (92), and the upper oil removing nozzle (91) and the lower oil removing nozzle (92) are oppositely and crosswise arranged.
8. A heat treatment method based on the polyglycolic acid liquid crystal nascent fiber heat treatment device as defined in claim 4, characterized by comprising the following steps:
the fibers on the unwinding wheel (5) sequentially pass through all the guide wheels (3) and then are connected to the winding wheel (501);
the temperature of the heat treatment medium in the first heat treatment zone (11), the second heat treatment zone (12) and the third heat treatment zone (13) is adjusted to: 245-255 ℃, 295-315 ℃ and 270-250 ℃ and keeping the temperature constant;
driving the first rotating bracket (4) and the second rotating bracket (401) to rotate, and immersing the fibers into a heat treatment medium;
operating the thread pressing device to enable a thread guide wheel (3) of the thread pressing device to press the fibers;
the unwinding wheel (5) and the winding wheel (501) are operated to rotate, the oil removing nozzle (9) is opened, and the unwinding speed of the unwinding wheel (5) and the winding speed of the winding wheel (501) are adjusted according to the tensile strength of the fibers by the tension sensor I (8) and the tension sensor II (801).
9. The heat treatment method of polyglycolic acid liquid crystal nascent fiber heat treatment device according to claim 8, characterized in that the heat treatment medium is vegetable oil.
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| CN202010473173.0A CN111636107B (en) | 2020-05-29 | 2020-05-29 | Polyglycolic acid liquid crystal nascent fiber heat treatment device and method |
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| CN111636107B true CN111636107B (en) | 2022-04-15 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0415783A2 (en) * | 1989-09-01 | 1991-03-06 | Ethicon, Inc. | Thermal treatment of thermoplasticc filaments and filaments |
| CN101798720A (en) * | 2010-04-28 | 2010-08-11 | 四川辉腾科技有限公司 | Aramid fiber III on-line thermal treating process and device thereof |
| CN205223429U (en) * | 2015-12-25 | 2016-05-11 | 四川辉腾科技股份有限公司 | Divide warm area multichannel online heat treatment device |
| CN106087177A (en) * | 2016-08-26 | 2016-11-09 | 四川省纺织科学研究院 | A kind of continuous solid phase polycondensation heat treatment method of liquid crystalline polyester fiber |
| CN108103610A (en) * | 2017-12-14 | 2018-06-01 | 陈逊 | A kind of manufacturing method of polyglycolic acid fiber |
| CN207552561U (en) * | 2017-11-11 | 2018-06-29 | 安徽翰联纺织有限公司 | A kind of yarn weaving loom |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8777601B2 (en) * | 2012-07-31 | 2014-07-15 | Uht Unitech Co., Ltd. | Manufacturing device of high modulus graphite fiber |
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2020
- 2020-05-29 CN CN202010473173.0A patent/CN111636107B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0415783A2 (en) * | 1989-09-01 | 1991-03-06 | Ethicon, Inc. | Thermal treatment of thermoplasticc filaments and filaments |
| CN101798720A (en) * | 2010-04-28 | 2010-08-11 | 四川辉腾科技有限公司 | Aramid fiber III on-line thermal treating process and device thereof |
| CN205223429U (en) * | 2015-12-25 | 2016-05-11 | 四川辉腾科技股份有限公司 | Divide warm area multichannel online heat treatment device |
| CN106087177A (en) * | 2016-08-26 | 2016-11-09 | 四川省纺织科学研究院 | A kind of continuous solid phase polycondensation heat treatment method of liquid crystalline polyester fiber |
| CN207552561U (en) * | 2017-11-11 | 2018-06-29 | 安徽翰联纺织有限公司 | A kind of yarn weaving loom |
| CN108103610A (en) * | 2017-12-14 | 2018-06-01 | 陈逊 | A kind of manufacturing method of polyglycolic acid fiber |
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