CN115156095B - Infrared detection device and method for thermoplastic prepreg for high-tension winding molding - Google Patents
Infrared detection device and method for thermoplastic prepreg for high-tension winding molding Download PDFInfo
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- CN115156095B CN115156095B CN202210806341.2A CN202210806341A CN115156095B CN 115156095 B CN115156095 B CN 115156095B CN 202210806341 A CN202210806341 A CN 202210806341A CN 115156095 B CN115156095 B CN 115156095B
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- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
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Abstract
The invention discloses an infrared detection device and method for thermoplastic prepreg for high-tension winding molding, belonging to the field of composite material detection, wherein the device comprises a discharging device, a receiving device, a limiting device, a guiding device, a heating device, an infrared detection device and prepreg, which are fixed on a mounting frame; the prepreg is discharged by the discharging device, sequentially passes through the limiting device, the guiding device, the heating device and the infrared detection device, and finally enters the receiving device. The invention establishes a direct relation between the infrared detection result and the allowable winding tension of the thermoplastic prepreg, and improves the detection efficiency; the thermoplastic prepreg is used in a grading manner according to the detection result, so that the material waste is reduced; according to the high rigidity characteristic and the high tension molding low damage tolerance characteristic of the thermoplastic prepreg, the detection limiting and guiding device is reasonably designed, so that the damage to the thermoplastic prepreg during detection is avoided.
Description
Technical Field
The invention belongs to the technical field of composite material detection, relates to an infrared detection device and an infrared detection method for composite material prepreg, and particularly relates to an infrared detection device and an infrared detection method for thermoplastic prepreg for high-tension winding molding.
Background
The resin in the thermoplastic composite prepreg is in a fully consolidated state, can effectively transfer load, can realize high-tension winding forming up to 1000MPa, is improved by one order of magnitude compared with 100 MPa-level conventional tension winding adopting a thermosetting composite material, and is suitable for forming high-tension winding parts in advanced electromagnetic fields such as energy storage flywheel, high-speed motor rotor jackets, electromagnetic emission barrels and the like. However, the high-performance thermoplastic prepreg has the technical difficulties of difficult impregnation, difficult stranding and doubling, and the like, so that the prepreg is easy to have defects, and the wide prepreg needs to be cut for use, and is easy to cause damage to the prepreg during cutting. The high-tension winding is a special forming mode, and is different from the conventional forming mode, the high-tension winding needs to apply larger stress to the prepreg in the forming process and can also be accompanied by higher forming temperature effect, so that the high-tension winding has extremely high requirements on the strength and uniformity of the prepreg and is extremely sensitive to material defects and damages. The nondestructive thermoplastic prepreg can stably realize high-tension winding of 1000-1500MPa according to design requirements. The defect and damage of the prepreg can lead to the reduction of allowable winding tension of the prepreg, the prepreg with the defect or damage can be damaged when being wound under the tension of 1000MPa, the volatility of the damage is large, the randomness is obvious, the continuity and the practicability of the large-tension winding forming are seriously influenced, the use of the large-tension winding technology of the thermoplastic prepreg is restricted, and a specific detection device and method are urgently needed.
The existing infrared detection mode mainly detects the performance of the molded material or detects the thermosetting prepreg. The existing infrared detection mode does not establish the relation between detection parameters and the allowable winding tension of the material in the large-tension winding forming, and lacks direct evaluation of the allowable winding tension of prepreg winding, so that the existing detection method has the defects of more steps, long time and low efficiency. And the existing detection mode can not grade and use the prepreg for tension winding, and the waste of the prepreg is easily caused. The conventional detection device does not consider the key problems that the thermoplastic prepreg is high in rigidity and sensitive to damage caused by large-tension winding, and the conventional detection device is easy to cause damage to the thermoplastic prepreg due to the roller and the limiting device, so that the detection device is not suitable for detecting the thermoplastic prepreg for large-tension winding. In order to meet the requirement of large-tension winding of thermoplastic prepregs, a special infrared detection device and a use mode thereof are urgently needed, the allowable winding tension of the prepregs is directly, accurately and low-damage judged, the graded use of the prepregs is realized, and the development of the large-tension winding technology of the thermoplastic prepregs is assisted.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides an infrared detection device and an infrared detection method for a thermoplastic prepreg for high-tension winding molding.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
an infrared detection device of thermoplastic prepreg for high-tension winding molding is characterized by comprising the following components: the device comprises a mounting frame, a discharging device, a receiving device, a limiting device, a guiding device, a heating device, an infrared detection device and prepreg; the device comprises a discharging device, a receiving device, a limiting device, a guiding device, a heating device and an infrared detection device, wherein the heating device and the infrared detection device are all fixed on a mounting frame, the discharging device is used for discharging prepreg, the limiting device is used for constraining the position of the prepreg, the receiving device is used for recycling constrained prepreg, the prepreg is recycled by the receiving device after passing through the discharging device and the limiting device in sequence, the guiding device is used for guiding the prepreg between the limiting device and the receiving device between the heating device and the infrared detection device, the heating device is used for heating the lower surface of the prepreg, and the infrared detection device is used for detecting the temperature of the heating device and the upper surface temperature of the prepreg.
In some embodiments, the limiting device comprises a plurality of groups of inclined passing rollers, the passing rollers are fixed on the mounting frame through passing roller mounting seats, the passing rollers restrict the prepreg position through inclined plane lateral component force and friction force, the prepreg thickness is h, the width is d, the material modulus is E, the tensile strength is delta, the maximum inclination angle between the passing rollers is theta, and the passing roller spacing L is larger than E x d/(0.1 x delta); the diameter D of the pass roller is greater than E/(0.1 δ).
In some embodiments, the heating device is composed of a heating roller, a heating roller mounting shaft, a heat source mounting seat and a temperature control device, wherein the heating roller is mounted on the mounting frame through the heating roller mounting shaft, the heat source and the temperature control device are mounted on the heat source mounting seat, the heat source mounting seat is connected to the mounting frame, the heat source is used for heating the heating roller, and the temperature control device controls the temperature of the heating roller by controlling the heat input of the heat source.
In some of these embodiments, the heat source is a heat gun or a heating rod or an induction coil.
In some embodiments, the infrared detection device is composed of an infrared thermometer, an infrared thermometer fixing frame, a sliding table mechanism and a follow-up window, the infrared thermometer is fixed on the mounting frame through the infrared thermometer fixing frame, the follow-up window is arranged on the sliding table mechanism through a sliding rail in a sliding mode, the sliding table mechanism is fixed on the mounting frame, the follow-up window is composed of a window box, a front pair of roller clamps and a rear pair of roller clamps, the window box top is provided with a window with the same width as the prepreg, the window and the heating roller are both positioned between the front pair of roller clamps and the rear pair of roller clamps, the heating roller is positioned below the window, the prepreg passes through the front pair of roller clamps and the rear pair of roller clamps and is clamped by the front pair of roller clamps and the rear pair of roller clamps respectively, the lower surface of the prepreg is attached to the heating roller, and the infrared thermometer can detect the temperature of the heating roller and the upper surface temperature of the prepreg through the window.
In some embodiments, the discharging device consists of a discharging cylinder, a discharging shaft and a damper, the front end of the prepreg is rolled on the discharging cylinder, the discharging cylinder is fixed on the discharging shaft, the discharging shaft is connected with the mounting frame through the damper, and the damper can provide resistance of not less than 0.01Nm at the rotating speed of 1-100 RPM of the discharging shaft; the damper is a mechanical friction belt or a motor or a magnetic powder brake.
In some embodiments, the material receiving device comprises a material receiving disc, a material receiving shaft, a material receiving motor and a motor mounting seat, wherein the material receiving disc is fixed on the material receiving shaft, the material receiving shaft is in transmission connection with the material receiving motor, the material receiving motor is fixedly arranged on the motor mounting seat, the motor mounting seat is fixed on the mounting frame, the rear end of the prepreg is rolled on the material receiving disc, and the material receiving motor drives the material receiving disc to rotate through the material receiving shaft to provide material receiving tension of not less than 10N, so that the tightening and orientation of the prepreg are maintained.
In some of these embodiments, the guide means consist of at least two parallel guide rollers, and at least one guide roller is provided on each of the front and rear sides of the heating roller, the diameter D of the guide rollers being greater than E/(0.1 δ).
In some embodiments, the front pair roller clamp consists of a first metal roller, a first rubber roller, a first movable mounting frame and a first spring, wherein the first metal roller and the first rubber roller are arranged in parallel, one end of the first spring is connected with the window box, the other end of the first spring is connected with the first rubber roller, the first spring pulls the first rubber roller towards the first metal roller through elasticity, so that the first rubber roller is tightly attached to the first metal roller, and the prepreg passes through between the first metal roller and the first rubber roller; the rear pair roller clamp consists of a second metal roller, a second rubber roller, a second movable mounting rack and a second spring, wherein the second metal roller and the second rubber roller are arranged in parallel, one end of the second spring is connected with the window box, the other end of the second spring is connected with the second rubber roller, the second spring pulls the second rubber roller to the second metal roller through elasticity, so that the second rubber roller is clung to the second metal roller, and the prepreg passes through between the second rubber roller and the second metal roller.
The detection method of the infrared detection device of the thermoplastic prepreg for the high-tension winding molding comprises the following steps:
step one: recording the surface temperature T1 of a heating roller, the average surface temperature T2 of the detected prepreg, the highest surface temperature Tmax of the detected prepreg, the lowest surface temperature Tmin of the prepreg, and the temperature fluctuation coefficient x 2= (Tmax-Tmin)/T2;
calibrating and measuring the infrared characteristics of the prepreg of the first tube to obtain the average temperature T2 of the upper surface of the prepreg;
taking a part with a temperature fluctuation coefficient x2 of less than 10% from the sections, testing the tensile strength of the sections, and recording the tensile force of the sections as N1 when the sections are subjected to average tensile failure; taking a plurality of sections of a part with a temperature fluctuation coefficient of 10% < x2<20%, and testing the tensile strength to obtain a tensile strength N1 x k1, wherein k1 is a first strength reduction coefficient; taking a plurality of sections of a part with a temperature fluctuation coefficient of 20% < x2<30%, and testing the tensile strength to obtain a tensile strength N1 x k2, wherein k2 is a second strength reduction coefficient;
step three: for rating, the final winding tension is N1 x k0 when the temperature fluctuation coefficient x2 is less than 10%, k0 is the tension winding process coefficient, and the temperature fluctuation coefficient is 10% < x2<20% and is degraded according to the quality of the thermoplastic prepreg, and the allowable winding tension is N1 x k0; the temperature fluctuation coefficient is 20% < x2<30%, and the allowable winding tension is N1 x k2 x k0; the temperature fluctuation coefficient x2 is more than 30%, and the quality of the prepreg cannot meet the requirement of large-tension winding.
The invention has the following advantages:
the beneficial effects of the invention are as follows:
1. the direct relation between the infrared detection result of the thermoplastic prepreg and the allowable winding tension of the thermoplastic prepreg is established, and the detection efficiency is improved;
2. the thermoplastic prepreg is rated according to the infrared detection result of the thermoplastic prepreg, and the thermoplastic prepreg can be used in a grading manner according to the design requirement, so that the material waste is reduced;
3. the high rigidity and the easy damage characteristic of the thermoplastic prepreg body and the high requirement of high tension winding on the quality of the prepreg are considered, and the damage to the prepreg in the detection process is avoided through a reasonably designed guiding and limiting device;
4. the two-stage heating device is adopted, so that the temperature of a heat source is stable, the heat source can be regulated according to different material requirements, the whole device is simple and practical, the requirements on software and hardware conditions are not high, only the infrared thermometer and self-contained software are utilized, and a complex post-treatment process is not required.
Drawings
FIG. 1 is a general schematic of the present invention;
FIG. 2 is a schematic diagram of a discharging device;
FIG. 3 is a schematic diagram of a positioning device;
FIG. 4 is a schematic diagram of a heating device;
FIG. 5 is a schematic diagram of an infrared detection device;
FIG. 6 is a schematic view of a follow-up window.
Name of the label in the figure: 1. the device comprises a mounting frame, a discharging device, a receiving device, a limiting device, a guiding device, a heating device, a 7 infrared detection device, a 8 prepreg, a 21-discharging cylinder, a 22-discharging shaft, a 23-damper, a 31-receiving tray, a 32-receiving shaft, a 33-receiving motor, a 34-motor mounting seat, a 41-passing roller, a 42-passing roller mounting seat, a 411-first passing roller, a 412-second passing roller, a 413-third passing roller, a 414-fourth passing roller, a 423-third passing roller mounting seat, a 424-fourth passing roller mounting seat, a 51-guiding roller, a 61-heating roller, a 62-heating roller mounting shaft, a 63-heat source, a 64-heat source mounting seat, a 65-temperature control device, a 71-infrared thermometer, a 72-infrared thermometer fixing frame, a 73-sliding table mechanism, a 74-following window, a 731-sliding rail, a 741-window box, a 7421 first metal roller, a 7422-first rubber roller, a 23-moving roller, a 7424-second moving roller, a 743-pair of second moving rollers, a 743-moving roller, a 7432.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
It should be noted that the terms like "upper", "lower", "left", "right", "front", "rear", and the like are also used for descriptive purposes only and are not intended to limit the scope of the invention in which the invention may be practiced, but rather the relative relationship of the terms may be altered or modified without materially altering the teachings of the invention.
As shown in fig. 1 to 6, the infrared detection device and method for the thermoplastic prepreg for high-tension winding molding of the invention comprise a mounting frame 1, a discharging device 2, a receiving device 3, a limiting device 4, a guiding device 5, a heating device 6, an infrared detection device 7 and a prepreg 8. The feeding device 2, the feeding device 3, the limiting device 4, the guiding device 5, the heating device 6 and the infrared detection device 7 are all fixed on the mounting frame 1, the feeding device 2 consists of a feeding barrel 21, a feeding shaft 22 and a damper 23, the feeding device 3 consists of a feeding disc 31, a feeding shaft 32, a feeding motor 33 and a motor mounting seat 34, the limiting device 4 consists of a plurality of groups of inclined passing rollers 41 and passing roller mounting seats 42, the guiding device 5 consists of at least two parallel guiding rollers 51, the heating device 6 consists of a heating roller 61, a heating roller mounting shaft 62, a heat source 63, a heat source mounting seat 64 and a temperature control device 65, the infrared detection device 7 consists of an infrared thermometer 71, an infrared thermometer fixing frame 72, a sliding table mechanism 73 and a follow-up window 74, the prepreg 8 is discharged by the feeding device 2, sequentially passes through the limiting device 4, the guiding device 5, the heating device 6 and the infrared detection device 7, and finally enters the feeding device 3.
The infrared detection and grading using method of the thermoplastic prepreg for tension winding molding comprises the following steps:
step one: for the same batch of prepregs 8 made of the same material, the surface temperature T1 of the heating roller 61, the average surface temperature T2 of the detected prepregs 8, the highest surface temperature Tmax of the detected prepregs 8, the lowest surface temperature Tmin of the prepregs 8, and the temperature fluctuation coefficient x 2= (Tmax-Tmin)/T2 are recorded.
Step two: calibrating
Measuring the infrared characteristic of a tube of prepreg 8 to obtain the average temperature T2 of the upper surface of the tube of prepreg;
taking a part with a temperature fluctuation coefficient x2 of less than 10% from the sections, testing the tensile strength of the sections, and recording the tensile force of the sections as N1 when the sections are subjected to average tensile failure;
taking a plurality of sections of a part with a temperature fluctuation coefficient of 10% < x2<20%, and testing the tensile strength to obtain a tensile strength N1 x k1, wherein k1 is a first strength reduction coefficient;
taking a plurality of sections of a part with a temperature fluctuation coefficient of 20% < x2<30%, and testing the tensile strength to obtain a tensile strength N1 x k2, wherein k2 is a second strength reduction coefficient;
step three: rating use
The final winding tension is N1 x k0 when the temperature fluctuation coefficient x2 is less than 10%, k0 is the tension winding process coefficient, and according to the mass of the thermoplastic prepreg, the carbon fiber reinforced PEEK material (T700/PEEK) is 0.45, and the glass fiber reinforced PEEK material (S2/PEEK) is 0.3 as known from the previous experiment;
the temperature fluctuation coefficient is 10% < x2<20%, and the allowable winding tension is N1 x k0;
the temperature fluctuation coefficient is 20% < x2<30%, and the allowable winding tension is N1 x k2 x k0;
according to the previous experiment, the prepreg has extremely large quality fluctuation and more defects, cannot meet the requirement of large-tension winding, and can be used for other forming modes.
The limiting device 4 is composed of a plurality of groups of inclined passing rollers 41 and passing roller mounting seats 42, the positions of the prepregs 8 are limited to facilitate infrared testing, tension winding forming is extremely sensitive to damage of materials, in order to avoid damage caused by testing, a plurality of groups of inclined straight-tube hard passing rollers 41 are adopted as limiting rollers, the positions of the prepregs 8 are restrained through inclined-surface lateral component force and friction force, the passing rollers 41 are made of materials with hardness higher than HRC50, and damage of the prepregs 8 due to roller surface deformation is prevented. In order to prevent the damage of the prepreg 8 caused by the additional bending moment of the prepreg 8 due to the inclined passing rollers 41, the position and the size of the passing rollers 41 in the limiting device 4 need to be designed, the thickness h of the prepreg 8, the width d, the maximum inclination angle between the passing rollers 41 is θ, the modulus of the material is E, the tensile strength is δ, and the distance L between the passing rollers 41 needs to be larger than e×d/(0.1×δ); in order to prevent damage to the prepreg 8 caused by the additional bending moment induced by the prepreg 8 on the surface of the pass roller 41, the diameter D of the pass roller 41 needs to be greater than e×h/(0.1×δ). The heating device 6 is composed of a heating roller 61, a heating roller mounting shaft 62, a heat source 63, a heat source mounting seat 64, a temperature control device 65 and the like, the heating roller 61 is mounted on the mounting frame 1 through the heating roller mounting shaft 62, the heat source 63 and the temperature control device 65 are mounted on the heat source mounting seat 64 and connected to the mounting frame 1, the heating roller 61 is heated by the heat source 63, and the temperature control device 65 collects and controls the temperature of the heating roller 61 by controlling the heat input of the heat source 63. The heating roller 61 is made of a metal material having high temperature resistance and high specific heat. With two-stage heating, it is easier to provide a stable test heat input for the prepreg 8 test. The discharging device 2 is composed of a discharging cylinder 21, a discharging shaft 22 and a damper 23, wherein the damper 23 can be a mechanical friction belt, a motor, a magnetic powder brake and the like, and the damper 23 can stably provide resistance of not less than 0.01Nm for a long time at a rotating speed of 1-100 RPM. The material receiving device 3 consists of a material receiving disc 31, a material receiving shaft 32, a material receiving motor 33 and a motor mounting seat 34, wherein the material receiving motor 33 can stably provide material receiving tension of not less than 10N and keep the tightening and orientation of the prepreg 8. The guiding device 5 is composed of at least two parallel guiding rollers 51, and a material with hardness higher than HRC50 is used as a roller surface material, and in order to prevent the additive 8 from being damaged on the surface of the guiding rollers 51 caused by the prepreg 8, the diameter D of the guiding rollers 51 needs to be greater than e×h/(0.1×δ). The heat source 63 may be a heat gun, a heating rod, an induction coil, or the like. The pair roller clamp 742 is composed of a metal roller 7421, a rubber roller 7422, a flexible mount 7423, and a spring 7424, and the clamping of the prepreg 8 is achieved by the spring 7424, the rubber roller 7422, and the metal roller 7421. The multiple groups of inclined passing rollers 41 and passing roller mounting seats 42 can be divided into a first passing roller 411, a first passing roller mounting seat 421, a second passing roller 412, a second passing roller mounting seat 422, a third passing roller 413, a third passing roller mounting seat 423, a fourth passing roller 414 and a fourth passing roller mounting seat 424. The guide roller 51 may be divided into a first guide roller 511 and a second guide roller 512.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the invention without departing from the principles thereof are intended to be within the scope of the invention as set forth in the following claims.
Claims (9)
1. The detection method of the infrared detection device of the thermoplastic prepreg for the high-tension winding molding is characterized by comprising the following steps of: the method comprises the following steps:
step one: for prepregs (8) of the same batch and the same material, recording the surface temperature T1 of a heating roller (61), the average surface temperature T2 of the detected prepregs (8), the highest surface temperature Tmax of the detected prepregs (8), the lowest surface temperature Tmin of the prepregs (8), and the temperature fluctuation coefficient x2 = (Tmax-Tmin)/T2;
step two, calibrating and measuring the infrared characteristics of the prepreg (8) to obtain the average temperature T2 of the upper surface of the prepreg;
taking a part with a temperature fluctuation coefficient x2 of less than 10% from the sections, testing the tensile strength of the sections, and recording the tensile force of the sections as N1 when the sections are subjected to average tensile failure; taking a plurality of sections of a part with a temperature fluctuation coefficient of 10% < x2<20%, and testing the tensile strength to obtain a tensile strength N1 x k1, wherein k1 is a first strength reduction coefficient; taking a plurality of sections of a part with a temperature fluctuation coefficient of 20% < x2<30%, and testing the tensile strength to obtain a tensile strength N1 x k2, wherein k2 is a second strength reduction coefficient;
step three: for rating, the final winding tension is N1 x k0 when the temperature fluctuation coefficient x2 is less than 10%, k0 is the tension winding process coefficient, and the temperature fluctuation coefficient is 10% < x2<20% and is degraded according to the quality of the thermoplastic prepreg, and the allowable winding tension is N1 x k0; the temperature fluctuation coefficient is 20% < x2<30%, and the allowable winding tension is N1 x k2 x k0; the temperature fluctuation coefficient x2 is more than 30 percent, the quality of the prepreg can not meet the requirement of large tension winding,
the method is realized by using an infrared detection device of the thermoplastic prepreg for the high-tension winding forming, and the infrared detection device of the thermoplastic prepreg for the high-tension winding forming comprises a mounting frame (1), a discharging device (2), a receiving device (3), a limiting device (4), a guiding device (5), a heating device (6), an infrared detection device (7) and a prepreg (8); wherein, blowing device (2), receiving device (3), stop device (4), guider (5), heating device (6), infrared detection device (7) all are fixed in mounting bracket (1), blowing device (2) are used for letting out prepreg (8), stop device (4) are used for retraining prepreg (8) position, receiving device (3) are used for retrieving retraining prepreg (8), prepreg (8) are retrieved by receiving device (3) behind blowing device (2), stop device (4) in proper order, guider (5) are used for with between heating device (6) and infrared detection device (7) with prepreg (8) between stop device (4) and receiving device (3), heating device (6) are used for heating prepreg (8) lower surface, infrared detection device (7) are used for detecting heating device (6) temperature and prepreg (8) upper surface temperature.
2. The method for detecting an infrared detecting device for a thermoplastic prepreg for high-tension winding molding according to claim 1, wherein: the limiting device (4) comprises a plurality of groups of inclined passing rollers (41), the passing rollers (41) are fixed on the mounting frame (1) through passing roller mounting seats (42), the passing rollers (41) restrict the positions of the prepregs (8) through inclined plane lateral component force and friction force, the thickness of the prepregs (8) is recorded as h, the width of the prepregs is recorded as d, the modulus of materials is E, the tensile strength is delta, the maximum inclination angle among the passing rollers (41) is theta, and the spacing L between the passing rollers (41) is larger than E x d/(0.1 x delta); the diameter D of the roller (41) is greater than E.times.h/(0.1.times.delta.).
3. The method for detecting an infrared detecting device for a thermoplastic prepreg for high-tension winding molding according to claim 2, wherein: the heating device (6) consists of a heating roller (61), a heating roller mounting shaft (62), a heat source (63), a heat source mounting seat (64) and a temperature control device (65), wherein the heating roller (61) is mounted on the mounting frame (1) through the heating roller mounting shaft (62), the heat source (63) and the temperature control device (65) are mounted on the heat source mounting seat (64), the heat source mounting seat (64) is connected to the mounting frame (1), the heat source (63) is used for heating the heating roller (61), and the temperature control device (65) controls the temperature of the heating roller (61) by controlling the heat input of the heat source (63).
4. The method for detecting an infrared detecting device for a thermoplastic prepreg for high-tension winding molding according to claim 3, wherein: the heat source (63) is a heat gun or a heating rod or an induction coil.
5. The method for detecting an infrared detecting device for a thermoplastic prepreg for high-tension winding molding according to claim 4, wherein: the infrared detection device (7) comprises an infrared thermometer (71), an infrared thermometer fixing frame (72), a sliding table mechanism (73) and a follow-up window (74), wherein the infrared thermometer (71) is fixed on the mounting frame (1) through the infrared thermometer fixing frame (72), the follow-up window (74) is arranged on the sliding table mechanism (73) in a sliding mode through a sliding rail (731), the sliding table mechanism (73) is fixed on the mounting frame (1), the follow-up window (74) is composed of a window box (741), a front counter roller clamp (742) and a rear counter roller clamp (743), the top of the window box (741) is provided with a window with the same width as a prepreg (8), the window and a heating roller (61) are both positioned between the front counter roller clamp (742) and the rear counter roller clamp (743), the prepreg (8) passes through the front counter roller clamp (742) and the rear counter roller clamp (743) and is respectively clamped by the front counter roller clamp (742) and the rear counter roller clamp (743), and the prepreg (8) can be adhered to the surface of the prepreg (8) through the heating roller (743), and the surface of the prepreg (8) can be heated, and the temperature of the prepreg (61) can be detected.
6. The method for detecting an infrared detecting device for a thermoplastic prepreg for high-tension winding molding according to claim 5, wherein: the discharging device (2) consists of a discharging cylinder (21), a discharging shaft (22) and a damper (23), wherein the front end of the prepreg (8) is wound on the discharging cylinder (21), the discharging cylinder (21) is fixed on the discharging shaft (22), the discharging shaft (22) is connected with the mounting frame (1) through the damper (23), and the damper (23) can provide resistance of not less than 0.01Nm at the rotating speed of the discharging shaft (22) of 1-100 RPM; the damper (23) is a mechanical friction belt or a motor or a magnetic powder brake.
7. The method for detecting an infrared detecting device for a thermoplastic prepreg for high-tension winding molding according to claim 6, wherein: the material collecting device (3) comprises a material collecting disc (31), a material collecting shaft (32), a material collecting motor (33) and a motor mounting seat (34), wherein the material collecting disc (31) is fixed on the material collecting shaft (32), the material collecting shaft (32) is in transmission connection with the material collecting motor (33), the material collecting motor (33) is fixedly mounted on the motor mounting seat (34), the motor mounting seat (34) is fixed on the mounting frame (1), the rear end of the prepreg (8) is wound on the material collecting disc (31), and the material collecting motor (33) drives the material collecting disc (31) to rotate through the material collecting shaft (32) to provide material collecting tension of not less than 10N, so that the tightening and the orientation of the prepreg (8) are maintained.
8. The method for detecting an infrared detecting device for a thermoplastic prepreg for high-tension winding molding according to claim 7, wherein: the guide device (5) consists of at least two parallel guide rollers (51), and at least one guide roller (51) is arranged at the front side and the rear side of the heating roller (61), wherein the diameter D of the guide roller (51) is larger than E/(0.1 x delta).
9. The method for detecting an infrared detecting device for a thermoplastic prepreg for high-tension winding molding according to claim 8, wherein: the front pair of roller clamps (742) are composed of a first metal roller (7421), a first rubber roller (7422), a first movable mounting frame (7423) and a first spring (7424), wherein the first metal roller (7421) and the first rubber roller (7422) are arranged in parallel, one end of the first spring (7424) is connected with the window box (741), the other end of the first spring is connected with the first rubber roller (7422), the first spring (7424) pulls the first rubber roller (7422) to the first metal roller (7421) through elasticity, the first rubber roller (7422) is clung to the first metal roller (7421), and the prepreg (8) passes through the space between the first metal roller (7421) and the first rubber roller (7422); the rear pair roller clamp (743) is composed of a second metal roller (7431), a second rubber roller (7432), a second movable mounting frame (7433) and a second spring (7434), wherein the second metal roller (7431) and the second rubber roller (7432) are arranged in parallel, one end of the second spring (7434) is connected with a window box (741), the other end of the second spring is connected with the second rubber roller (7432), the second spring (7434) pulls the second rubber roller (7432) to the second metal roller (7431) through elasticity, the second rubber roller (7432) is clung to the second metal roller (7431), and the prepreg (8) passes through the gap between the second rubber roller (7432) and the second metal roller (7431).
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