CN116653323A - Gradient cooling composite wire forming device - Google Patents
Gradient cooling composite wire forming device Download PDFInfo
- Publication number
- CN116653323A CN116653323A CN202310571468.5A CN202310571468A CN116653323A CN 116653323 A CN116653323 A CN 116653323A CN 202310571468 A CN202310571468 A CN 202310571468A CN 116653323 A CN116653323 A CN 116653323A
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- Prior art keywords
- module
- wire
- gradient cooling
- forming device
- hot
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- 238000001816 cooling Methods 0.000 title claims abstract description 35
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 238000002844 melting Methods 0.000 claims abstract description 20
- 230000008018 melting Effects 0.000 claims abstract description 20
- 238000003892 spreading Methods 0.000 claims abstract description 20
- 230000007480 spreading Effects 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 15
- 238000009990 desizing Methods 0.000 claims abstract description 14
- 230000001360 synchronised effect Effects 0.000 claims abstract description 14
- 238000007598 dipping method Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 6
- 238000005470 impregnation Methods 0.000 claims description 22
- 239000000835 fiber Substances 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000009730 filament winding Methods 0.000 claims description 2
- 239000008188 pellet Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000005056 compaction Methods 0.000 claims 2
- 238000007731 hot pressing Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 229920000049 Carbon (fiber) Polymers 0.000 description 7
- 239000004917 carbon fiber Substances 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 229920005992 thermoplastic resin Polymers 0.000 description 7
- 239000000155 melt Substances 0.000 description 5
- 238000010146 3D printing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 2
- 239000000805 composite resin Substances 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000011199 continuous fiber reinforced thermoplastic Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/525—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
Abstract
The invention provides a gradient cooling high-performance composite wire forming device which comprises a constant tension wire releasing module, a thermal desizing wire expanding module, a liftable melting and dipping module, a gradient cooling module, a spray cooling module, a low-compression-force traction device and a synchronous winding device, wherein the constant tension wire releasing module is connected with the thermal desizing wire expanding module; the hot pulp removing and filament spreading device adopts a plurality of active hot rolls to realize the heating and low-damage filament feeding functions, and the hot-pressing counter rolls are matched to further improve the filament spreading effect; the liftable melting and dipping module adopts a motor and a guide rail to match with the S-shaped runner and the die nozzle to realize the functions of automatically lifting and dropping the runner and melting and dipping the wire; the gradient cooling module comprises a plurality of tube structures with heating resistors; the low-pressure traction device adopts a plurality of pairs of synchronous driving pairs of rollers to realize low-pressure constant-speed stable traction; the synchronous winding device is provided with a sliding guide rail and a tension sensor, and the winding angle of the wire winding is dynamically adjusted through the guide rail, so that constant tension and stable winding can be realized.
Description
Technical Field
The invention belongs to the field of continuous fiber reinforced thermoplastic resin matrix composite materials, and particularly relates to a gradient cooling composite wire forming device.
Background
The additive manufacturing technology is used as a novel composite material forming process, has the advantages of strong structural designability, strong complex structure forming capability, low manufacturing cost of small-batch customized components, high forming efficiency and the like, has certain application in civil fields such as high-end sports goods, medical equipment, protective equipment, automobile industry and the like, and has wide application prospect in the fields such as aerospace, wind power generation, rail transit and the like. However, compared with the traditional composite material molding process, the continuous fiber additive manufacturing process lacks a high-temperature and high-pressure environment, the high-viscosity thermoplastic resin has poor infiltration capacity to fiber bundles, and the application and development of the technology are greatly limited by the interfacial bonding performance of the fiber resin.
The method of melting impregnation can improve the impregnation degree of the wire to a certain extent by controlling the pressure of a melting cavity and the impregnation tension, but because the surface of the carbon fiber is coated by the sizing agent, a large number of pores still exist in the wire prepared by adopting the traditional melting impregnation method, and the impregnation effect is poor; on the other hand, rapid cooling of Gao Wensi material by the melt impregnation module will cause thermal stress in the wire, resulting in degradation of wire performance and easy bending, so designing a high impregnation quality and high performance wire forming device becomes a major point and difficulty in the art.
Disclosure of Invention
In order to solve the problems, the invention discloses a gradient cooling composite wire forming device, which is provided with a hot-press coupled desizing fiber spreading module, wherein a fiber winding method can be adjusted according to requirements, the heat treatment time is controlled, the preheating and fiber spreading functions are realized, and the resin impregnation degree is improved.
A high-performance composite wire forming device with gradient cooling comprises a constant tension wire releasing module, a hot desizing wire expanding module, a liftable melting and dipping module, a gradient cooling module, a spray cooling module, a low-compression-force traction device and a synchronous winding device; the hot pulp removing and filament spreading device adopts a plurality of active hot rolls to realize the heating and low-damage filament feeding functions, and the hot-pressing counter rolls are matched to further improve the filament spreading effect; the liftable melting and dipping module adopts a motor and a guide rail to match with the S-shaped runner and the die nozzle to realize the functions of automatically lifting and dropping the runner and melting and dipping the wire; the gradient cooling module comprises a plurality of tube structures with heating resistors; the low-pressure traction device adopts a plurality of pairs of synchronous driving pairs of rollers to realize low-pressure constant-speed stable traction; the synchronous winding device is provided with a sliding guide rail and a tension sensor, and the winding angle of the wire winding is dynamically adjusted through the guide rail, so that constant tension and stable winding can be realized.
Further, the hot pulp removal exhibition silk module is equipped with four initiative heat rollers at least, and silk exit is equipped with the seal wire piece, reduces the control silk direction when wearing and tearing the silk, and bottom and operating platform junction are equipped with the slide rail, can change hot pulp removal exhibition silk module y to the position, and the melting dipping module of being convenient for wears the silk operation, adopts the drive belt to connect in order to guarantee synchronous rotation between the heat roller.
Further, two hot rolls close to the wire outlet in the four active hot rolls are mutually extruded to apply pressure to the carbon fiber wires so as to promote the dispersion and the expansion of the fibers.
Further, the liftable melting and dipping module comprises a mechanical lifting device, an S-shaped runner, a die nozzle, an extruder and a pressure sensor; the mechanical lifting device is at least provided with a motor, and the automatic lifting and descending functions of the upper part of the runner are realized by matching with guide rails distributed on the periphery of the device; the S-shaped runner is composed of upper and lower meshed cover plates, a passage is reserved between the cover plates for resin to flow and impregnate fibers, and heating resistors are arranged in the upper and lower cover plates to provide impregnation temperature; the extruder adopts single screw extrusion, and the screw part is provided with three sections of ladder temperature control resistors so as to meet the temperature requirements of a melting section, a homogenizing section and a compression section; the pressure sensors are distributed at the resin inlet and the outlet of the melt impregnation module so as to dynamically observe the pressure change in the melt cavity.
Further, the inlet and outlet parts of the curved runner wire are processed by adopting horizontal sections, the geometric position of the inlet is higher than that of the outlet, so that resin can flow to the outlet conveniently, the impregnation effect is enhanced, and the resin inlet is arranged at the rear part of the horizontal section of the wire, so that the resin can fill all runners along the fiber movement direction conveniently.
Further, the upper and lower meshing cover plates of the bending flow passage are of replaceable structures, the total impregnation angle is controlled through the number and the angle of bending, the change range of the impregnation angle comprises 120 DEG, 360 DEG and 540 DEG, the impregnation angle is not limited to the above dimensions, the bending part is subjected to rounding treatment, and the fiber abrasion in the impregnation process is reduced.
Further, the gradient cooling module is provided with three constant temperature pipe body structures at least, the temperature parameters of the three constant temperature pipe body structures are reduced in sequence along the traction direction, the temperature parameters and the change range are set according to the types of thermoplastic resin, and the temperature stability in the pipe body structure channel is maintained through the alignment of four groups of heating resistors.
Further, the low-pressure traction device is at least provided with three groups of driving counter rollers for providing stable pressure, the counter rollers are connected by adopting a transmission belt to ensure synchronous rotation, a sliding rail is arranged at the joint of the bottom and the operation platform, the X-direction position of the hot pulp removing and filament spreading module can be adjusted, and the relative position between the hot pulp removing and filament spreading module and the spraying device is convenient to control.
According to the invention, the hot-pulping and filament-stretching module is used for removing redundant pulp on the surface of the fiber through continuously arranging the hot rollers, and realizing low-damage filament stretching by matching with the active counter rollers, so that the impregnation degree of thermoplastic resin on the fiber is improved, and the porosity of the thermoplastic resin-based composite filament is reduced; the safety and convenience of operations such as wire threading and wire replacement in the composite material wire preparation process are greatly reduced due to the arrangement of the slidable hot desizing wire spreading module, the mechanical lifting device and the slidable low-compression-force traction device; the gradient cooling module enables the wire to be cooled from the melting temperature to the room temperature in a slow and gradient mode, improves the internal crystallinity of the wire, enables the melting temperature of the wire to be increased in the 3D printing process, improves the thermal stability, solves the problems of plugs and broken wires caused by premature softening of the wire in the continuous fiber 3D printing process, and greatly improves the performance of preparing the wire.
The invention has the beneficial effects that:
the hot pulp removing and filament spreading module is used for removing redundant pulp on the surface of the fiber through continuously arranging hot rolls, and realizing low-damage fiber spreading by matching with an active pair roll, so that the impregnation degree of thermoplastic resin on the fiber is improved, and the porosity of the thermoplastic resin-based composite filament is reduced; the safety and convenience of operations such as wire threading and wire replacement in the composite material wire preparation process are greatly reduced due to the arrangement of the slidable hot desizing wire spreading module, the mechanical lifting device and the slidable low-compression-force traction device; the gradient cooling module enables the wire to be cooled from the melting temperature to the room temperature in a slow and gradient mode, improves the internal crystallinity of the wire, enables the melting temperature of the wire to be increased in the 3D printing process, improves the thermal stability, solves the problems of plugs and broken wires caused by premature softening of the wire in the continuous fiber 3D printing process, and greatly improves the performance of preparing the wire.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2, thermal desizing and filament spreading module;
FIG. 3, liftable melt impregnation module;
fig. 4, curved flow path.
List of reference numerals:
the device comprises a constant tension wire releasing module 1, a thermal desizing wire expanding module 2, a liftable melting and dipping module 3, a gradient cooling module 4, a spray cooling module 5, a low-compression-force traction device 6, a synchronous winding device 7, an active hot roller 201, a hot pressing roller 202, a wire guide block 203, a sliding rail 203, a mechanical lifting device 301, a bending flow passage 302, a die nozzle 303, a segmented stepped temperature control resistor 304 and a resin pellet feeding port 305; melt pressure sensor 306.
Description of the embodiments
The present invention is further illustrated in the following drawings and detailed description, which are to be understood as being merely illustrative of the invention and not limiting the scope of the invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
As shown in FIG. 1, the invention provides a gradient cooling high-performance composite wire forming device. The forming device comprises a constant tension wire releasing module 1, a thermal desizing wire expanding module 2, a liftable melting and dipping module 3, a gradient cooling module 4, a spray cooling module 5, a low-compression-force traction device 6 and a synchronous winding device 7 which are sequentially arranged.
Referring to fig. 1-4, the thermal desizing and filament spreading module 2 includes two active heat rollers 201 for filament winding, two pairs of heat pressing rollers 202, a filament guiding block 203 and a sliding rail 203. The liftable melt impregnation module 3 comprises a mechanical lifting device 301, a bent runner 302, a die nozzle 303, a sectional type step temperature control resistor 304 and a resin granule feeding port 305; a melt pressure sensor 306;
meanwhile, the embodiment provides a specific process for preparing the wire by using the composite wire forming device: the objective in this example was to prepare a continuous carbon fiber reinforced PEEK composite wire with a diameter of 1.3. 1.3 mm.
The Dongli 3K carbon fiber yarn is pulled out of the unreeling device 1, the hot-pressing pair roller 201 is bypassed, the hot-pressing pair roller 202 is lifted, the carbon fiber yarn is placed in the middle of the hot-pressing pair roller, the hot-pressing pair roller passes through Tao Daosi blocks 204, the sliding rail 203 is pushed, the hot-desizing yarn-spreading module 2 is pushed out of a yarn threading plane, the die nozzle 303 with the aperture of 1.3mm is replaced, the mechanical lifting device 301 is controlled to lift the upper panel, the carbon fiber sequentially passes through the fiber inlet and the die nozzle 303, the upper panel is controlled to be closed under the condition that the fiber is placed in the flow channel 302, the sliding rail 203 is pushed to reset the hot-desizing yarn-spreading module 2, and then the carbon fiber yarn threading action is completed sequentially through the gradient cooling module 4, the spray cooling module 5, the low-compression force traction device 6 and the synchronous reeling device 7.
The air pump switch is regulated to enable the low-pressure traction device 6 to be tightly pressed, the filament spreading hot roller 202 and the hot pressing pair roller 203 are set to 350 ℃, the temperature of the heating resistor 304 of the screw extruder is sequentially set to 350, 355 and 360 ℃ along the direction from the charging barrel to the flow channel, the temperature of the flow channel is set to 360 ℃, the temperature of the die nozzle is set to 340 ℃, PEEK is placed at the resin granule feeding port 305, the rotating speed of the screw extruder is set to 5r/min, the indication of a melt pressure sensor is observed, the cooling module 5, the low-pressure traction device 6 and the synchronous winding device 7 are sprayed, and the speed of the screw extruder is regulated to 13 r/min.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features.
Claims (8)
1. The utility model provides a high performance composite wire forming device of gradient cooling which characterized in that: the device comprises a constant tension wire releasing module (1), a compaction heat desizing wire expanding module (2), a lifting melting dipping module (3), a gradient cooling module (4), a spray cooling module (5), a low compaction force traction device (6) and a synchronous winding device (7) which are sequentially arranged.
2. The gradient cooling high performance composite wire forming device according to claim 1, wherein: the thermal desizing and filament spreading module (2) comprises two active hot rolls (201) for filament winding, two pairs of hot rolls (202) and a sliding rail (203).
3. The gradient cooling high performance composite wire forming device according to claim 1, wherein: the liftable melt impregnation module (3) comprises a mechanical lifting device (301), a curved runner (302), a die nozzle (303), a sectional type step temperature control resistor (304), a resin pellet feeding port (305) and an extruder; at least one electric push rod motor is arranged at the top of the mechanical lifting device (301) to provide driving force, the curved runner top plate is connected with guide rails distributed around the device, and the push rod motor drives the automatic lifting and descending functions of the upper part of the runner; the bending runner (302) is composed of upper and lower meshed cover plates, a passage is reserved between the cover plates for resin to flow and impregnate fibers, and heating resistors are arranged in the upper and lower cover plates to provide impregnation temperature; the extruder adopts single screw extrusion, and three sections of ladder temperature control resistors (304) are sequentially arranged at the screw part; the pressure sensors are distributed at the resin inlet and the outlet of the bent runner to dynamically observe the pressure change in the melting cavity.
4. The gradient cooling high performance composite wire forming device according to claim 1, wherein: the wire inlet and outlet parts of the curved runner (302) are treated by horizontal sections; wherein the geometric position of the wire inlet is higher than the geometric position of the wire outlet; the resin inlet is arranged at the rear part of the horizontal section of the wire inlet, so that the resin can conveniently fill all flow channels along the fiber movement direction.
5. The gradient cooling high performance composite wire forming device according to claim 1, wherein: the upper and lower meshing cover plates of the bending flow channel (302) are of replaceable structures, and the total impregnation angle is controlled by the number and the angle of bending.
6. The gradient cooling high performance composite wire forming device according to claim 6, wherein: the dip angle ranges include 120 °, 360 °, 540 ° and are not limited to the above dimensions, and the curved portion is rounded.
7. The gradient cooling high performance composite wire forming device according to claim 1, wherein: three constant temperature pipe body structures are sequentially arranged on the gradient cooling module (4), and the temperature parameters of the three constant temperature pipe body structures are sequentially reduced along the traction direction.
8. The gradient cooling high performance composite wire forming device according to claim 1, wherein: the low-pressure traction device (6) is at least provided with three groups of driving paired rollers; the rollers are connected by adopting a transmission belt to ensure synchronous rotation, a sliding rail is arranged at the joint of the bottom and the operation platform, the X-direction position of the hot pulp removing and filament spreading module can be adjusted, and the relative position between the hot pulp removing and filament spreading module and the spraying device is convenient to control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310571468.5A CN116653323A (en) | 2023-05-20 | 2023-05-20 | Gradient cooling composite wire forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310571468.5A CN116653323A (en) | 2023-05-20 | 2023-05-20 | Gradient cooling composite wire forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116653323A true CN116653323A (en) | 2023-08-29 |
Family
ID=87723418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310571468.5A Pending CN116653323A (en) | 2023-05-20 | 2023-05-20 | Gradient cooling composite wire forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116653323A (en) |
-
2023
- 2023-05-20 CN CN202310571468.5A patent/CN116653323A/en active Pending
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