CN111942965B - Swing rod type segmented small-tension conveying method and device for carbon fiber prepreg tows - Google Patents
Swing rod type segmented small-tension conveying method and device for carbon fiber prepreg tows Download PDFInfo
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- CN111942965B CN111942965B CN202010802405.2A CN202010802405A CN111942965B CN 111942965 B CN111942965 B CN 111942965B CN 202010802405 A CN202010802405 A CN 202010802405A CN 111942965 B CN111942965 B CN 111942965B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
- B65H59/36—Floating elements compensating for irregularities in supply or take-up of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
- B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
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Abstract
During laying, the prepreg tows are sent out by the conveying module after passing through the unreeling module and enter the constant-tension swing rod type buffer module, the prepreg tow tension is divided into two mutually independent parts by the conveying module, the tension value of the carbon fiber prepreg tows before the conveying module is controlled by the unreeling module, and the tension value of the carbon fiber prepreg tows after the conveying module is controlled by the constant-tension swing rod type buffer module, so that the control of different tensions of different parts of the prepreg tows is realized. The invention can ensure that the prepreg tows at different positions in the conveying process maintain different tension, namely the tension at the laying compression roller is smaller and the tension at the discharging position is larger, and simultaneously ensures that the prepreg tows can also maintain stable and small tension in the buffering process without larger fluctuation, and has simple structure.
Description
Technical Field
The invention relates to a carbon fiber pre-impregnated tow conveying method, in particular to a swing rod type sectional small-tension conveying method and device for carbon fiber pre-impregnated tows, which realize stable sectional small-tension control of the carbon fiber tows.
Background
Advanced composite materials represented by continuous carbon fiber reinforced resin matrix composite materials have the advantages of high specific modulus, high strength and the like, are widely applied to the fields of aerospace and the like, and show more and more important positions. The automatic composite material laying technology is an advanced manufacturing technology with low cost, automation and numeralization, and has become a main manufacturing technology of composite material components in the aerospace field due to the advantages of high precision, high speed and high material utilization rate. The conveying system is an important component in automatic laying equipment, reliable tension control is carried out on the tows in the conveying system, and the conveying system is a basis for ensuring laying precision and laying quality.
In the present automatic laying equipment, a material roll motor and a tension mechanism are mostly adopted as a tension control scheme, the control scheme needs to control the rotating speed of the material roll motor according to the laying speed, so that the material roll discharging speed and the laying speed are synchronous, the material roll diameter in the feeding process can be continuously reduced, the real-time roll diameter of the material roll needs to be estimated, the rotating speed of the material roll motor is calibrated according to the roll diameter, when the laying speed and the discharging speed have deviation, the deviation direction and the size are fed back by the tension mechanism, and therefore the discharging speed is adjusted, and the material roll motor adapts to the current laying speed again.
Although the existing tension control scheme can control the tension of the tows within a certain range, the existing tension control scheme has a plurality of problems: the material roll diameter is estimated by calculating the emptying length by using an encoder, the device is complex, the calculation amount is large, and an error exists; the tension mechanism adopts the air cylinder to provide the filament bundle tension and provide necessary buffering allowance, and due to the fact that friction force exists in the air cylinder, the reciprocating stroke of the air cylinder can generate output force deviation which can be directly reflected on the filament bundle tension and is difficult to eliminate, so that the filament bundle tension fluctuates, and laying precision and quality are influenced; the tension of the tows at the position of the laying compression roller is required to be as small as possible by the automatic laying equipment, generally below 10N, debonding is avoided when the concave curved surface is laid, meanwhile, the tows at the position of the laying position are required to have larger tension, the isolation film is guaranteed to be rolled smoothly, the isolation film can be rolled redundantly or even reversely wound due to too small tension, equipment is stopped or even damaged, the tension of the tows in the conveying process is continuous by the existing tension control scheme, namely the tension at the position of the laying position is basically consistent with the tension at the position of the laying compression roller, and the requirements that the tows have different tensions at different positions cannot be met.
Disclosure of Invention
In order to overcome the problems of the existing carbon fiber prepreg tow conveying device, the invention aims to provide a swing rod type segmented small-tension conveying method and device for carbon fiber prepreg tows, which can enable prepreg tows at different positions in the conveying process to maintain different tension, namely the tension at a laying compression roller is small and the tension at a discharging position is large, and simultaneously ensure that the prepreg tows can also maintain stable small tension in the buffering process without large fluctuation and have simple structure.
In order to achieve the purpose, the invention adopts the following technical scheme:
a swing rod type segmented small-tension conveying device for carbon fiber prepreg tows comprises a mounting frame, a mounting plate, an unreeling module, a traction module and a tension mechanism, wherein the mounting plate is fixed on the mounting frame, and the unreeling module, the tension mechanism and the traction module are sequentially arranged on the mounting plate; the unwinding module is arranged at one end of the tension mechanism, and the traction module is arranged at the other end of the tension mechanism;
the tension mechanism comprises a conveying module, a constant tension swing type buffer module and an acquisition module which are arranged in sequence.
The invention has the further improvement that the constant tension swing type buffer module comprises a swing rod, a swing rod guide wheel set, a buffer motor, a buffer module main shaft and a miniature clutch; the buffer motor is fixed on the mounting plate, an output shaft of the buffer motor is connected with a buffer module main shaft, one end of the miniature clutch is connected with the buffer module main shaft, the other end of the miniature clutch is connected with the swing rod, swing rod guide wheel sets are arranged at two ends of the swing rod, and the acquisition module is connected with the swing rod.
The invention has the further improvement that the unreeling module comprises an unreeling shaft, an unreeling tray and a clutch; the unwinding shaft is fixed on the mounting plate, the unwinding tray is mounted on the unwinding shaft, one end of the clutch is fixed on the unwinding shaft, and the other end of the clutch is fixed on the unwinding tray.
The invention is further improved in that the mounting plate is also provided with an unreeling guide wheel set for guiding the carbon fiber prepreg tows.
The invention has the further improvement that the conveying module comprises a conveying motor, a conveying roller, a pinch roller set, a pressing cylinder and a cylinder seat; conveying motor and cylinder seat are fixed on the mounting panel, and conveying motor's output shaft links to each other with the conveying roller to the drive conveying roller rotates, compresses tightly the cylinder and installs on the cylinder seat, and pinch roller group fixes on the piston rod that compresses tightly the cylinder, and pinch roller group is located under the conveying roller, and carbon fiber preimpregnation silk bundle is located between pinch roller group and the conveying roller.
The invention is further improved in that a tension guide wheel set is arranged on the mounting plate.
The invention is further improved in that the acquisition module comprises an angular displacement sensor and a transmission gear; the angular displacement sensor is fixed on the mounting plate, the transmission gear is arranged on the input shaft, and the transmission gear is meshed with the outer gear ring on the swing rod.
During laying, the pre-impregnated tows are delivered out by the delivery module after passing through the unreeling module and enter the constant-tension swing rod type buffer module, the tension of the pre-impregnated carbon fiber tows in front of the delivery module is controlled by the unreeling module, and the tension of the pre-impregnated carbon fiber tows behind the delivery module is controlled by the constant-tension swing rod type buffer module, so that the segmented small-tension delivery of the pre-impregnated carbon fiber tows is realized.
The invention is further improved in that when the laying rate is inconsistent with the conveying rate of the conveying module, the length of the carbon fiber prepreg tows in the tension mechanism is changed, so that the swing rod rotates, and the conveying rate of the conveying module is adjusted according to the rotation angle and the rotation rate of the swing rod, so that the swing rod returns to the balance position again.
The invention has the further improvement that when a plurality of tension mechanisms are arranged, all the tension mechanisms are arranged in series, the pre-impregnated tows are sent out by the conveying module of the front-end tension mechanism after passing through the unreeling module during laying, and the tension of the carbon fiber pre-impregnated tows in front of the conveying module in the front-end tension mechanism is controlled by the unreeling device; the tension of the carbon fiber prepreg tows in each tension mechanism is independently controlled by the constant-tension swing rod type buffer module in each tension mechanism, so that the carbon fiber prepreg tows are conveyed.
Compared with the prior art, the invention has the following beneficial effects:
during conveying, the unreeling module is sent out by the carbon fiber prepreg tows through the conveying module and enters the constant-tension swing rod type buffer module, the prepreg tow tension is divided into two mutually independent parts by the conveying module, the tension value of the carbon fiber prepreg tows in front of the conveying module is controlled by the unreeling module, and the tension value of the carbon fiber prepreg tows behind the conveying module is controlled by the constant-tension swing rod type buffer module, so that different tensions of different parts of the prepreg tows are controlled.
Furthermore, the miniature clutch is used as a tension control element of the buffer device, a stable driving torque is applied to the oscillating bar by using a friction pair in the clutch, and the driving torque and the torque of the tension of the prepreg tows acting on the oscillating bar are balanced, so that a stable tension value is provided for the prepreg tows, the friction force and the direction of the friction pair in the clutch are not changed in the buffering process, and the tension of the prepreg tows is ensured to be kept stable; the oscillating bar is used as a buffer device, the buffer stroke is the sum of the arc chord lengths of the tail end of the oscillating bar when in buffering, the buffer stroke can be increased by increasing the length of the oscillating bar, and simultaneously, the tension arm is lengthened and the action of reducing the tension of the prepreg tows is realized, so that the buffer device can provide a reliable buffer stroke and control the tension of the prepreg tows in a very small range; the conveying modules, the constant-tension swing rod type buffer modules and the acquisition modules in the pre-impregnated tow conveying device jointly form a tension mechanism, the tension mechanisms can be infinitely connected in series, the conveying modules in the tension mechanisms divide the tension of the pre-impregnated tows into sections, and the constant-tension swing type buffer modules in the tension mechanisms control the small tension values of the sections, so that multi-section tension control is realized, the tension values among the sections are independent from each other and do not interfere with each other, stable small tension can be maintained in the buffer process, and large fluctuation is avoided.
Furthermore, the conveying roller is used as the conveying device, the rotating speed of the conveying motor does not need to be calibrated according to the real-time roll diameter, therefore, the encoder does not need to calculate the emptying length and estimate the real-time roll diameter of the material roll, and the calculation amount is reduced.
The prepreg tows are sent out by the conveying module after passing through the unreeling module and enter the constant-tension swing rod type buffer module, the tension value of the carbon fiber prepreg tows in front of the conveying module is controlled by the unreeling module, and the tension value of the carbon fiber prepreg tows behind the conveying module is controlled by the constant-tension swing rod type buffer module, so that the tension of different parts of the prepreg tows is independently controlled, and the segmented small-tension conveying is realized. The invention can meet the requirements of different tensions of different positions of the carbon fiber pre-impregnated tows in the laying process, thereby overcoming the problem that the requirements of different tensions of the tows in different positions cannot be met because the tensions of the tows are continuous in the prior art, namely the tensions at the discharging position are basically consistent with the tensions at the laying compression roller.
Drawings
FIG. 1 is a schematic illustration of a segmented tensioned carbon fiber prepreg tow delivery process.
Fig. 2 is a schematic view of the tension mechanism in series.
FIG. 3 is a sectional type tensioned carbon fiber prepreg tow transport device.
Fig. 4 is an assembly view of a buffer module and an acquisition module.
In the figure: 1-aluminum profile mounting frame, 2-mounting plate, 3-unreeling module, 4-tension mechanism, 5-traction module, 6-carbon fiber prepreg tows, 301-unreeling material shaft, 302-unreeling material disc, 303-clutch, 304-unreeling guide wheel set, 410-conveying module, 420-constant tension swing type buffer module, 430-acquisition module, 411-conveying motor, 412-conveying roller, 413-pressing wheel set, 414-pressing air cylinder, 415-air cylinder seat, 421-swing rod, 422-swing rod guide wheel set, 423-buffer motor, 424-buffer module spindle, 425-miniature clutch, 426-tension guide wheel set, 431-angular displacement sensor and 432-transmission gear.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, the principle of the prepreg tow swing link type segmented small tension conveying method for automatic fiber laying equipment of the invention is as follows: in the laying process, the prepreg tows are sent out from the delivery module through the unreeling module and enter the constant-tension swing rod type buffer module, the prepreg tow tension is divided into two mutually independent parts by the delivery module, the prepreg tow tension value before the delivery module is determined by the unreeling module, a brake or a clutch is arranged in the unreeling module, the tension of the section can be adjusted by adjusting the resistance of the brake or the clutch, the tension of the section is generally required to be higher, the prepreg tow tension value after the delivery module is determined by the swing rod type buffer module, and the tension of the section is generally required to be lower, so that different tensions of different parts of the prepreg tows are realized. The tension control component of the swing rod type buffer module consists of a micro clutch and a motor, wherein one end of the micro clutch is connected with the motor, and the other end of the micro clutch is connected with a swing rod, so that constant torque is transmitted to the swing rod, and the prepreg tows keep constant tension. The pre-impregnated tows are continuously pulled out by the traction module, the traction module simulates the process that the pre-impregnated tows are pulled out from the lower portion of the compression roller in the laying process, when the traction rate, namely the laying rate is inconsistent with the conveying rate of the conveying module, the length of the pre-impregnated tows of the tension mechanism can be changed, the swing rod is rotated to buffer, the rotating angle is collected by the collection module and is transmitted to the control system, the control system adjusts the conveying rate of the conveying module according to the rotating angle of the swing rod and the rotating rate obtained through calculation, and the swing rod returns to the balance position again under the action of the constant torque transmitted to the swing rod by the clutch.
The low tension in the present invention means a force of 10N or less.
Referring to fig. 2, a pre-impregnated tow swing link type segmented small tension conveying method for automatic fiber laying equipment, wherein a plurality of tension mechanisms can be infinitely connected in series, when the number of the tension mechanisms is multiple, the tension mechanisms are arranged in series, pre-impregnated tows are delivered out by a conveying module of a front end tension mechanism after passing through an unreeling module 3 during laying, and the tension of carbon fiber pre-impregnated tows 6 in front of the conveying module in the front end tension mechanism is controlled by an unreeling device; the tension of the carbon fiber prepreg tows 6 in each tension mechanism is independently controlled through the constant-tension swing rod type buffer module 420 in each tension mechanism, so that the carbon fiber prepreg tows 6 are conveyed.
As shown in fig. 2, for example, two tension mechanisms are connected in series, the tension mechanisms are respectively a first tension mechanism and a second tension mechanism, the first conveying module and the second conveying module are used as boundaries, the tension of the carbon fiber prepreg tows is divided into three parts, the tension of the carbon fiber prepreg tows between the conveying module of the first conveying module and the unwinding module is determined by the unwinding module, the tension value of the prepreg tows between the conveying module of the first conveying module and the conveying module of the second conveying module is determined by the first miniature clutch, the tension value of the carbon fiber prepreg tows 6 behind the conveying module of the second conveying module is determined by the second miniature clutch, and the tension values of the prepreg tows in the three parts are independent and do not affect each other, so that the multi-section tension control of the prepreg tows is realized.
Referring to fig. 3 and 4, the swing rod type segmented small tension conveying device for carbon fiber prepreg tows comprises an aluminum profile mounting frame 1, a mounting plate 2, an unreeling module 3, a tension mechanism 4, a traction module 5 and carbon fiber prepreg tows 6, wherein the mounting plate 2 is fixed on the aluminum profile mounting frame 1, and the unreeling module 3, the tension mechanism 4 and the traction module 5 are sequentially arranged on the mounting plate 2.
The traction module 4 is used for simulating the process that the prepreg tows are pulled out from the tow placement head in the actual automatic laying of the prepreg tows. The carbon fiber prepreg tows 6 are sent out from the unreeling module 3 by the conveying module 410, pass through the tension mechanism 4, the tension value of the carbon fiber prepreg tows 6 before the tension mechanism 4 is determined by a clutch or a brake in the unreeling module 3, the tension value of the carbon fiber prepreg tows 6 in and after the tension mechanism 4 is determined by the tension value set by the tension mechanism 4, and the segmented control of the tension is realized.
Specifically, referring to fig. 3, the unwinding module 3 includes an unwinding shaft 301, an unwinding tray 302, a clutch 303, and an unwinding guide wheel set 304. Wherein, unreel material axle 301 and fix on mounting panel 2, and can not relative 2 axial displacements of mounting panel or circumferential direction, unreel charging tray 302 and install on unreeling material axle 301, can unreel material axle 301 circumferential direction relatively, clutch 303 one end is fixed on unreeling material axle 301, the other end is fixed on unreeling charging tray 302, when carbon fiber prepreg tow 6 pulling unreels charging tray 302 and rotates, because the effect of clutch 303, it can receive certain resistance to unreel charging tray 302, make carbon fiber prepreg tow 6 produce certain tension, in the automatic application of laying of thermosetting carbon fiber prepreg, this tension value is generally great, in order to ensure the reliable and stable of barrier film rolling process. The clutch 303 can also be replaced by a brake with similar specifications, and can provide stable braking force, and the magnitude of the tension value can be adjusted by adjusting the torque value of the clutch 303 or the braking force value of the corresponding brake. The unwinding guide wheel set 304 is mounted on the mounting plate 2 and plays a role in guiding the carbon fiber prepreg tows 6.
Specifically, referring to fig. 4, the tension mechanism 4 includes a conveying module 410, a constant tension swing type buffer module 420, and an acquisition module 430.
The conveying module 410 comprises a conveying motor 411, a conveying roller 412, a pressing wheel set 413, a pressing cylinder 414 and a cylinder seat 415; a conveying motor 411 and a cylinder seat 415 are fixed on the mounting plate 2, an output shaft of the conveying motor 411 is connected with the conveying roller 412 and drives the conveying roller 412 to rotate, a pressing cylinder 414 is installed on the cylinder seat 415, a pressing wheel group 413 is fixed on a piston rod of the pressing cylinder 414 and faces the conveying roller 412, namely the pressing wheel group 413 is located right below the conveying roller 412, and the carbon fiber prepreg tows 6 are located between the pressing wheel group 413 and the conveying roller 412; in operation, the pressing wheel set 413 is tightly pressed on the conveying roller 412 under the action of the pressing air cylinder 414, so that the carbon fiber prepreg tows 6 between the pressing wheel set 413 and the conveying roller 412 cannot slide relative to the surface of the conveying roller 412, and accurate conveying is ensured.
The constant tension swing type buffer module 420 comprises a swing link 421, a swing link guide wheel set 422, a buffer motor 423, a buffer module spindle 424, a micro clutch 425 and a tension guide wheel set 426. Wherein, the buffer motor 423 is fixed on the mounting plate 2, and the output shaft of the buffer motor 423 is connected with the buffer module spindle 424.
The buffer module spindle 424 is driven to rotate clockwise at a stable speed, one end of the miniature clutch 425 is connected with the buffer module spindle 424, the other end of the miniature clutch 425 is connected with the swing rod 421, so that power of the buffer module spindle 424 is transmitted to the swing rod 421 in a constant torque mode, swing rod guide wheel sets 422 are mounted at two ends of the swing rod 421, the carbon fiber prepreg tows 6 are wound on the swing rod guide wheel sets 422, and under the condition that the swing rod 421 is subjected to the clockwise constant torque, in order to maintain balance of the swing rod 421, a certain amount of tension correspondingly exists on the carbon fiber prepreg tows 6, the tension guide wheel sets 426 are mounted on the mounting plate 2 and are basically horizontal with the swing rod guide wheel sets 422 of the swing rod 421, and the effect of stabilizing the swing rod force arm is achieved.
The acquisition module 430 comprises an angular displacement sensor 431 and a transmission gear 432; the angular displacement sensor 431 is fixed on the mounting plate 2, a transmission gear 432 is installed on an input shaft of the angular displacement sensor 431, and the transmission gear 432 is matched with an outer gear ring a on the swing rod to transmit the current angle information of the swing rod 421 to the angular displacement sensor 431.
Generally, a certain angle position of the swing rod 421 is set as a set balance position, in the automatic laying process, if the laying rate is not consistent with the feeding rate, which is reflected in the device that the traction rate of the traction module 5 is not consistent with the conveying rate of the conveying module 410, the carbon fiber prepreg tows 6 in the tension mechanism 4 are lengthened or shortened, the swing rod 421 can be used for always tightening the carbon fiber prepreg tows 6 under the action of the micro clutch 425, the swing rod 421 can swing by a corresponding angle along with the lengthening or shortening of the carbon fiber prepreg tows 6, the angle is collected by the collection module 430 and fed back to the control system, and the conveying speed of the conveying module 410 is adjusted according to the angle value and the angle change speed, so that the swing rod 421 returns to the balance position again. During the buffering process, because the torque transmitted by the micro clutch 425 is constant, and the arm of force of the swing link 421 affected by the carbon fiber prepreg tows 6 does not change too much, the tension fluctuation of the prepreg tows is not large, and the tension fluctuation is mainly affected by the inertia of the buffering module 420.
Claims (2)
1. The carbon fiber prepreg tow swing link type segmented small-tension conveying device is characterized by comprising an installation frame (1), an installation plate (2), an unreeling module (3), a traction module (5) and a tension mechanism (4), wherein the installation plate (2) is fixed on the installation frame (1), and the unreeling module (3), the tension mechanism (4) and the traction module (5) are sequentially arranged on the installation plate (2); the unreeling module (3) is arranged at one end of the tension mechanism (4), and the traction module (5) is arranged at the other end of the tension mechanism (4);
the tension mechanism (4) comprises a conveying module (410), a constant tension swing type buffer module (420) and an acquisition module (430) which are arranged in sequence;
the constant-tension swing type buffer module (420) comprises a swing rod (421), a swing rod guide wheel set (422), a buffer motor (423), a buffer module main shaft (424) and a micro clutch (425); the buffer motor (423) is fixed on the mounting plate (2), an output shaft of the buffer motor (423) is connected with a buffer module main shaft (424), one end of a micro clutch (425) is connected with the buffer module main shaft (424), the other end of the micro clutch is connected with a swing rod (421), swing rod guide wheel sets (422) are arranged at two ends of the swing rod (421), and an acquisition module (430) is connected with the swing rod (421);
a tension guide wheel set (426) is also arranged on the mounting plate (2);
the unwinding module (3) comprises an unwinding shaft (301), an unwinding tray (302) and a clutch (303); the unwinding shaft (301) is fixed on the mounting plate (2), the unwinding tray (302) is mounted on the unwinding shaft (301), one end of the clutch (303) is fixed on the unwinding shaft (301), and the other end of the clutch is fixed on the unwinding tray (302);
an unwinding guide wheel set (304) for guiding the carbon fiber prepreg tows (6) is further arranged on the mounting plate (2);
the conveying module (410) comprises a conveying motor (411), a conveying roller (412), a pressing wheel group (413), a pressing air cylinder (414) and an air cylinder seat (415); a conveying motor (411) and a cylinder seat (415) are fixed on the mounting plate (2), an output shaft of the conveying motor (411) is connected with the conveying roller (412) and drives the conveying roller (412) to rotate, a pressing cylinder (414) is installed on the cylinder seat (415), a pressing wheel group (413) is fixed on a piston rod of the pressing cylinder (414), the pressing wheel group (413) is located right below the conveying roller (412), and a carbon fiber prepreg tow (6) is located between the pressing wheel group (413) and the conveying roller (412);
the acquisition module (430) comprises an angular displacement sensor (431) and a transmission gear (432); the angular displacement sensor (431) is fixed on the mounting plate (2), the transmission gear (432) is arranged on the input shaft, and the transmission gear (432) is meshed with the outer gear ring on the swing rod (421).
2. The swing rod type segmented small-tension conveying method for the carbon fiber prepreg tows as claimed in claim 1 is characterized in that during laying, the prepreg tows are sent out by a conveying module after passing through an unreeling module (3) and enter a constant-tension swing rod type buffer module (420), the tension of the carbon fiber prepreg tows (6) in front of the conveying module is controlled by the unreeling module (3), and the tension of the carbon fiber prepreg tows (6) behind the conveying module is controlled by the constant-tension swing rod type buffer module, so that segmented small-tension conveying of the prepreg tows is realized;
when the laying rate is inconsistent with the conveying rate of the conveying module, the length of the carbon fiber prepreg tows (6) in the tension mechanism (4) is changed, so that the swing rod rotates, the conveying rate of the conveying module is adjusted according to the rotation angle and the rotation rate of the swing rod, and the swing rod returns to the balance position again;
when a plurality of tension mechanisms are arranged, the tension mechanisms are arranged in series, the pre-impregnated tows are sent out by a conveying module of the front-end tension mechanism after passing through an unreeling module (3) during laying, and the tension of the carbon fiber pre-impregnated tows (6) in the front of the conveying module in the front-end tension mechanism is controlled by the unreeling device; the tension of the carbon fiber prepreg tows (6) in each tension mechanism is independently controlled through the constant-tension swing rod type buffer module (420) in each tension mechanism, so that the carbon fiber prepreg tows (6) are conveyed.
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| CN202010802405.2A CN111942965B (en) | 2020-08-11 | 2020-08-11 | Swing rod type segmented small-tension conveying method and device for carbon fiber prepreg tows |
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| CN202010802405.2A CN111942965B (en) | 2020-08-11 | 2020-08-11 | Swing rod type segmented small-tension conveying method and device for carbon fiber prepreg tows |
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| CN113942884A (en) * | 2021-11-06 | 2022-01-18 | 浙江精功机器人智能装备有限公司 | Silk thread tension adjusting device |
| CN114671301A (en) * | 2022-03-17 | 2022-06-28 | 合肥通晟智能装备有限公司 | Extremely low tensile sectional type control system of tow in fiber placement equipment |
| CN114789930B (en) * | 2022-06-22 | 2022-09-02 | 苏州环诺新材料科技有限公司 | Tension adjusting equipment for material receiving and discharging of degradation bag |
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