Impregnation degree detection equipment

Abstract

The utility model discloses impregnation degree detection equipment which comprises a pasting device, a soaking tank, a water absorption device and weighing equipment, the pasting device comprises an upper adhesive tape roller set and a lower adhesive tape roller set, the upper adhesive tape roller set and the lower adhesive tape roller set are used for pasting adhesive tapes on the upper surface and the lower surface of prepreg, and the soaking tank is used for soaking the prepreg pasted with the adhesive tapes in water; the water absorption device comprises an upper compression roller set and a lower compression roller set which are vertically symmetrical, an upper water absorption part is arranged on the upper compression roller set, a lower water absorption part is arranged on the lower compression roller set, the soaked prepreg penetrates through the space between the upper compression roller set and the lower compression roller set, and the upper water absorption part and the lower water absorption part are used for absorbing redundant water on the surface of the soaked prepreg; and the weighing equipment is used for weighing the prepreg before soaking and the prepreg after soaking. Therefore, the accuracy of the impregnation degree detection is improved, the working efficiency is improved, errors and uncertainty possibly caused by manual operation are reduced, and the detection result of the impregnation degree is more reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material manufacturing, and in particular to an impregnation degree detection device. Background Art

[0002] The impregnation degree of prepreg is an important indicator to characterize the degree of bonding between the resin and the fiber inside the prepreg. The higher the impregnation degree, the more complete the resin impregnation of the carbon fiber, thus achieving better mechanical properties.

[0003] However, current prepreg impregnation testing technologies, particularly the widely used water absorption method, fail to control the critical operations of tape application and sample surface water removal during the test. Instead, the test often relies on the operator's experience and technical skills, lacking a unified, standardized operating procedure. This human factor not only increases the variability of test results but can also introduce errors due to improper operation, affecting the accuracy and reliability of test results. This often leads to experimental errors caused by human factors and consumables. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an impregnation degree detection device.

[0005] The present invention provides an impregnation detection device, which includes:

[0006] A pasting device, the pasting device comprising an upper tape roller group and a lower tape roller group, the upper tape roller group being used to paste an upper tape on the upper surface of the prepreg, and the lower tape roller group being used to paste a lower tape on the lower surface of the prepreg;

[0007] A water immersion tank, the water immersion tank is used to immerse the prepreg after the tape is attached;

[0008] A water absorbing device, the water absorbing device comprising an upper pressing roller group and a lower pressing roller group that are symmetrical in upper and lower directions, the upper pressing roller group being provided with an upper water absorbing portion, the lower pressing roller group being provided with a lower water absorbing portion, the prepreg after being immersed in water passing between the upper pressing roller group and the lower pressing roller group, the upper water absorbing portion and the lower water absorbing portion being used to absorb excess water on the surface of the prepreg after being immersed in water;

[0009] A weighing device is used to weigh the prepreg before and after immersion in water.

[0010] In some embodiments of the present invention, the upper tape roller group includes an upper tape roller, an upper traction roller and a first upper pressure roller which are arranged in sequence;

[0011] An upper tape ring is sleeved on the upper tape roller, the upper traction roller and the first upper pressing roller are located on the unwinding path of the tape roll, and the upper traction roller is used to pull the upper tape to stick the upper tape to the upper surface of the prepreg, and the first upper pressing roller is used to apply pressure to press the upper tape tightly on the upper surface of the prepreg.

[0012] In some embodiments of the present invention, the lower tape roller assembly includes a lower tape roller, a lower traction roller, and a first lower pressure roller that are sequentially arranged;

[0013] The lower tape roller is provided with a lower tape ring, the lower traction roller and the first lower pressing roller are located on the unwinding path of the tape roll, and the lower traction roller is used to pull the lower tape and stick the lower tape to the lower surface of the prepreg, and the first lower pressing roller is used to apply pressure to press the lower tape tightly to the lower surface of the prepreg.

[0014] In some embodiments of the present invention, the pasting device further includes a first left support frame, a first right support frame, a second left support frame, a second right support frame, a third left support frame, and a third right support frame;

[0015] The two ends of the upper tape roller and the lower tape roller are respectively connected to the first left support frame and the first right support frame, the two ends of the upper traction roller and the lower traction roller are respectively connected to the second left support frame and the second right support frame, and the two ends of the first upper pressure roller and the first lower pressure roller are respectively connected to the third left support frame and the third right support frame.

[0016] In some embodiments of the present invention, a plurality of partitions are provided in the immersion tank, and the partitions divide the immersion tank into a plurality of independent immersion spaces. The plurality of immersion spaces are used to simultaneously immerse a plurality of the prepregs in water in separate areas.

[0017] In some embodiments of the present invention, the upper pressing roller group includes a second upper pressing roller and a third upper pressing roller;

[0018] The second upper pressing roller is arranged in parallel with the third upper pressing roller, and the upper water absorbing portion is arranged on the second upper pressing roller and the third upper pressing roller.

[0019] In some embodiments of the present invention, the lower pressing roller group includes a second lower pressing roller and a third lower pressing roller;

[0020] The second lower pressing roller is arranged directly below the second upper pressing roller, the third lower pressing roller is arranged directly below the third upper pressing roller, and the lower water absorbing part is arranged on the second lower pressing roller and the third lower pressing roller.

[0021] In some embodiments of the present invention, the water absorption device further includes a fourth left support frame, a fourth right support frame, a fifth left support frame, and a fifth right support frame;

[0022] One end of the second upper pressure roller and the second lower pressure roller are connected to the fourth left support frame, the other end of the second upper pressure roller and the second lower pressure roller are connected to the fourth right support frame, one end of the third upper pressure roller and the third lower pressure roller are connected to the fifth left support frame, and the other end of the third upper pressure roller and the third lower pressure roller are connected to the fifth right support frame.

[0023] In some embodiments of the present invention, both the upper water absorbing part and the lower water absorbing part include absorbent cotton.

[0024] In some embodiments of the present invention, the upper tape and the lower tape both include biaxially oriented polypropylene films, and the widths of the upper tape and the lower tape are greater than the width of the prepreg.

[0025] The impregnation detection device provided by the utility model has at least the following advantages:

[0026] The impregnation detection device provided by the present invention uses a pasting device to paste the tape on the upper and lower surfaces of the prepreg, and then immerses the prepreg in water through a immersion tank, which helps to keep the surface of the prepreg flat during the immersion process, so that water can penetrate into the interior of the prepreg more evenly. Through the immersion tank, the prepreg can be fully and evenly exposed to water, thereby improving the uniformity of impregnation. Then, the upper pressing roller group and the lower pressing roller group are used to remove excess water from the surface of the prepreg, which can ensure that the water on the surface of the prepreg is effectively removed during weighing, thereby reducing the error in weight measurement caused by residual water, improving the accuracy of impregnation detection, improving work efficiency, and reducing the errors and uncertainties that may be caused by manual operation, making the impregnation detection result more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic structural diagram of a pasting device provided by an exemplary embodiment of the present invention;

[0029] Figure 2 A schematic top view of a water immersion tank provided by an exemplary embodiment of the present invention;

[0030] Figure 3 A side structural schematic diagram of a water absorption device provided by an exemplary embodiment of the present utility model.

[0031] The following are marked in the accompanying drawings:

[0032] 1. Pasting device; 101. Upper tape roller; 102. Upper traction roller; 103. First upper pressure roller; 104. Lower tape roller; 105. Lower traction roller; 106. First lower pressure roller; 107. First left support frame; 108. Second left support frame; 109. Third left support frame; 110. Upper tape; 111. Lower tape;

[0033] 2. Immersion tank; 201. Partition;

[0034] 3. Water absorption device; 301. Second upper pressure roller; 302. Third upper pressure roller; 303. Upper water absorption part; 304. Second lower pressure roller; 305. Third lower pressure roller; 306. Lower water absorption part; 307. Fourth left support frame; 308. Fifth left support frame. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without inventive efforts shall fall within the scope of protection of the present invention.

[0036] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] The impregnation degree of carbon fiber prepreg is an important indicator to characterize the degree of bonding between the resin and the fiber inside the carbon fiber prepreg. How to reasonably characterize the impregnation degree of carbon fiber prepreg is a task of great significance to the process research and development of carbon fiber prepreg. The higher the impregnation degree, the more complete the resin impregnation of the carbon fiber, thus obtaining better mechanical properties.

[0038] There are many methods for characterizing the impregnation degree of existing carbon fiber prepregs, including X-ray computed tomography, active infrared thermal imaging, gluing and water absorption methods, among which gluing and water absorption methods can achieve low-cost and rapid characterization of the impregnation degree of carbon fiber prepregs. However, in the current prepreg impregnation test technology, especially the widely used water absorption method, the key operations of tape sticking and removing water from the sample surface are not controlled during the test process. It often relies on the operator's experience and technical level and lacks a unified standardized operating procedure. The intervention of this human factor not only increases the variability of the test results, but may also introduce errors due to improper operation, affecting the accuracy and reliability of the test results, and often causes errors in experimental results due to human factors and consumables.

[0039] In order to solve the above technical problems, the utility model provides an impregnation detection device, which uses a pasting device to stick tape to the upper and lower surfaces of the prepreg, and then immerses the prepreg in water through a immersion tank, which helps to keep the surface of the prepreg flat during the immersion process, so that water can penetrate into the interior of the prepreg more evenly. Through the immersion tank, the prepreg can fully and evenly contact water, thereby improving the uniformity of impregnation. Then, the upper and lower pressing roller groups are used to remove excess water from the surface of the prepreg, which can ensure that the water on the surface of the prepreg is effectively removed during weighing, thereby reducing the error in weight measurement caused by residual water, improving the accuracy of impregnation detection, improving work efficiency, and reducing the errors and uncertainties that may be caused by manual operation, making the impregnation detection results more reliable.

[0040] An exemplary embodiment of the present invention provides an impregnation detection device, referring to Figure 1-Figure 3 The impregnation detection device includes: an adhesive bonding device 1, an immersion tank 2, a water absorption device 3, and a weighing device. The adhesive bonding device 1 includes an upper tape roller assembly and a lower tape roller assembly. The upper tape roller assembly is used to bond an upper tape 110 to the upper surface of the prepreg, and the lower tape roller assembly is used to bond a lower tape 111 to the lower surface of the prepreg. For example, both upper tape 110 and lower tape 111 are made of biaxially oriented polypropylene film, and each has a width of 150 mm and a thickness of 50 μm.

[0041] The immersion tank 2 is used to immerse the prepreg after the tape is pasted; the water absorption device 3 includes an upper pressure roller group and a lower pressure roller group that are symmetrical in upper and lower directions. The upper pressure roller group is provided with an upper water absorption part 303, and the lower pressure roller group is provided with a lower water absorption part 306. The prepreg after immersion passes between the upper pressure roller group and the lower pressure roller group. The upper water absorption part 303 and the lower water absorption part 306 are used to absorb excess water on the surface of the prepreg after immersion; the weighing equipment is used to weigh the prepreg before immersion and the prepreg after immersion, wherein the weighing equipment can be an electronic scale.

[0042] For example, a section of prepreg with a width of 120 cm and a length of 3 cm is cut. The PE film on the upper surface and the release paper on the lower surface of the cut prepreg are removed. The prepreg is then placed between the upper and lower tape rollers of the applicator 1. The line pressure of the upper and lower tape rollers is 200 N / m. The applicator 1 applies tape to the upper and lower surfaces of the prepreg, then removes any excess tape. The prepreg is weighed using a scale and recorded as m1. The prepreg is then inserted into a immersion tank 2 at a height of 3 cm. The water depth in the immersion tank 2 is 1 cm, and the prepreg is removed after soaking for 1 hour. The removed prepreg is fed lengthwise into the upper and lower pressure rollers of the water absorption device 3. The upper and lower water absorption sections 303 and 306 absorb excess water from the prepreg. The line pressure of both the upper and lower pressure rollers is 100 N / m. The soaked prepreg is then weighed using a weighing device, and the weight (m2) is recorded. The water absorption of each sample is calculated as: mabsorption = m2 - m1, yielding the prepreg's impregnation degree.

[0043] In some embodiments of the present invention, Figure 1 The upper tape roller group includes an upper tape roller 101, an upper traction roller 102, and a first upper pressure roller 103, which are arranged in sequence. 110 turns of upper tape are sleeved on the upper tape roller 101. The upper traction roller 102 and the first upper pressure roller 103 are located on the unwinding path of the tape roll. The upper traction roller 102 is used to pull the upper tape 110 to stick the upper tape 110 on the upper surface of the prepreg. The first upper pressure roller 103 is used to apply pressure to press the upper tape 110 against the upper surface of the prepreg. 110 turns of upper tape are arranged on the upper tape roller 101. The upper traction roller 102 pulls the upper tape 110 by rotating, which can ensure that the tape moves along a predetermined path and speed, thereby achieving accurate alignment and adhesion with the prepreg. The upper traction roller 102 applies constant tension to the tape to avoid problems such as wrinkles and breaks in the upper tape 110 due to excessive or insufficient tension during the adhesion process. The prepreg with the upper tape 110 pasted is pressurized by the first upper pressing roller 103 to ensure that the upper tape 110 is tightly fitted to the prepreg, and the bubbles generated on the surface of the prepreg after the upper tape 110 is pasted are squeezed out to reduce the retention of bubbles on the surface of the sample, thereby improving the adhesion between the upper tape 110 and the prepreg, enhancing the pasting effect, and improving the accuracy of the test results.

[0044] In some embodiments of the present invention, Figure 1The lower tape roller assembly includes a lower tape roller 104, a lower traction roller 105, and a first lower pressing roller 106, which are arranged in sequence. Lower tape roller 104 is sleeved with a lower tape 111 coil. Lower traction roller 105 and first lower pressing roller 106 are located on the unwinding path of the tape roll. Lower traction roller 105 is used to pull lower tape 111 and adhere it to the lower surface of the prepreg. First lower pressing roller 106 is used to apply pressure to press lower tape 111 against the lower surface of the prepreg. Lower tape rollers 104 have 11 coils of lower tape. Lower traction roller 105 rotates to pull lower tape 111, ensuring that the tape moves along a predetermined path and speed, thereby achieving accurate alignment and adhesion with the prepreg. Lower traction roller 105 applies constant tension to lower tape 111, preventing wrinkles or breakage during the adhesion process due to excessive or insufficient tension. The prepreg with the lower tape 111 pasted is pressurized by the first lower pressing roller 106 to ensure that the lower tape 111 is tightly fitted to the prepreg, and the bubbles generated on the surface of the prepreg after the lower tape 111 is pasted are squeezed out to reduce the retention of bubbles on the surface of the sample, thereby improving the adhesion between the lower tape 111 and the prepreg, enhancing the pasting effect, and improving the accuracy of the test results.

[0045] The line pressure of the upper adhesive tape roller 101 , the upper traction roller 102 , the first upper pressing roller 103 , the lower adhesive tape roller 104 , the lower traction roller 105 and the first lower pressing roller 106 are all 200 N / m.

[0046] In some embodiments of the present invention, Figure 1 The pasting device 1 also includes a first left support frame 107, a first right support frame, a second left support frame 108, a second right support frame, a third left support frame 109 and a third right support frame; the two ends of the upper tape roller 101 and the lower tape roller 104 are respectively connected to the first left support frame 107 and the first right support frame, the two ends of the upper traction roller 102 and the lower traction roller 105 are respectively connected to the second left support frame 108 and the second right support frame, and the two ends of the first upper pressure roller 103 and the first lower pressure roller 106 are respectively connected to the third left support frame 109 and the third right support frame. In this way, each roller is fixed by two left and right support frames. This double-point support method can effectively disperse the force and torque generated by the roller during operation, thereby enhancing the structural stability of the entire pasting device 1, helping to reduce the vibration generated by the roller during rotation, ensuring the smooth transportation of the tape and prepreg, and improving the pasting accuracy and efficiency. At the same time, by adjusting the position or angle of the support frame, the position, angle and spacing of each roller can be easily fine-tuned to adapt to tapes and prepregs of different specifications and materials, thereby improving the adaptability and flexibility of the equipment.

[0047] In some embodiments of the present invention, Figure 2, a plurality of partitions 201 are provided in the immersion tank 2, and the partitions 201 divide the immersion tank 2 into a plurality of independent immersion spaces, and the plurality of immersion spaces are used to immerse a plurality of prepregs in zones at the same time. By dividing the immersion tank 2 into a plurality of independent spaces by the partitions 201, zoning control can be performed according to the needs of different prepregs. For example, the temperature, immersion time and other parameters of different immersion spaces can be adjusted according to the material, thickness and immersion requirements of the prepreg, so as to achieve more precise immersion control. By fixing the liquid level height in the immersion tank 2 and fixing the width of the sample tank, it is ensured that the immersion treatment of each sample achieves the same effect. And each immersion space works independently and does not interfere with each other. When a prepreg is finished being immersed in water, it can be taken out immediately and proceed to the next step of processing without waiting for other prepregs, which reduces waiting time and improves equipment utilization.

[0048] In some embodiments of the present invention, Figure 3 The upper pressing roller assembly includes a second upper pressing roller 301 and a third upper pressing roller 302; the second upper pressing roller 301 and the third upper pressing roller 302 are arranged in parallel, and the upper water absorbing portion 303 is disposed around the second upper pressing roller 301 and the third upper pressing roller 302. Thus, the second upper pressing roller 301 and the third upper pressing roller 302 are arranged in parallel, so they can jointly apply uniform pressure to the passing material. At the same time, the upper water absorbing portion 303 is disposed around both the second upper pressing roller 301 and the third upper pressing roller 302, which increases the contact area and time between the prepreg and the upper water absorbing portion 303, thereby improving water absorption efficiency.

[0049] In some embodiments of the present invention, Figure 3 The lower pressing roller assembly includes a second lower pressing roller 304 and a third lower pressing roller 305. The second lower pressing roller 304 is positioned directly below the second upper pressing roller 301, and the third lower pressing roller 305 is positioned directly below the third upper pressing roller 302. The lower water absorbing portion 306 is disposed around the second lower pressing roller 304 and the third lower pressing roller 305. Thus, the second lower pressing roller 304 and the third lower pressing roller 305 are disposed in parallel, thereby jointly applying uniform pressure to the passing material. Simultaneously, the lower water absorbing portion 306 is disposed around both the second lower pressing roller 304 and the third lower pressing roller 305, increasing the contact area and duration between the prepreg and the lower water absorbing portion 306, thereby improving water absorption efficiency.

[0050] In some embodiments of the present invention, Figure 3The water absorbing device 3 further includes a fourth left support frame 307, a fourth right support frame, a fifth left support frame 308, and a fifth right support frame; one end of the second upper pressure roller 301 and the second lower pressure roller 304 are both connected to the fourth left support frame 307, and the other ends of the second upper pressure roller 301 and the second lower pressure roller 304 are both connected to the fourth right support frame; one end of the third upper pressure roller 302 and the third lower pressure roller 305 are both connected to the fifth left support frame 308, and the other ends of the third upper pressure roller 302 and the third lower pressure roller 305 are both connected to the fifth right support frame. In this way, the two ends of each pressure roller are fixed by the left and right support frames, which can effectively disperse the force and torque generated by the pressure roller during operation, thereby enhancing the structural stability of the entire water absorbing device 3, helping to reduce the vibration generated by the pressure roller during rotation, ensuring the smooth transportation of materials during the water absorption process, and improving the water absorption accuracy and efficiency.

[0051] In some embodiments of the present invention, Figure 3 Both the upper absorbent portion 303 and the lower absorbent portion 306 comprise absorbent cotton. For example, the absorbent cotton is made of pure cotton non-woven fabric, with a thickness of 2 mm and a weight of 60 g / m2. The absorbent cotton, with its fine fiber structure, can rapidly absorb large amounts of water, ensuring that excess moisture from the prepreg is quickly and effectively absorbed during the absorption process, ensuring efficient absorption.

[0052] In some embodiments of the present invention, Figure 3 Both upper and lower tapes 110 and 111 are made of biaxially oriented polypropylene film, and their widths are greater than the width of the prepreg. This ensures that the edges of the prepreg are fully covered by the tape, enhancing adhesion and preventing warping or peeling caused by unattached edges.

[0053] In one embodiment, the testing process for obtaining the impregnation degree of the prepreg includes:

[0054] Step 1: Cut 4 prepreg samples with a length of 120 mm and a width of 30 mm.

[0055] Step 2: Weigh the weight of the prepreg sample, record it as m1, accurate to 0.001g.

[0056] Step 3: Feed the prepreg sample in the length direction along the tape winding direction between the pressure rollers of the pasting device 1. The linear pressure of the first upper pressure roller 103 and the first lower pressure roller 106 are both 200N / m. After the tape is pasted on both sides of the prepreg sample, cut off the excess tape.

[0057] Step 4: Place four prepreg samples with their bottom edges in the longitudinal direction into the immersion tank 2, where the liquid level in the immersion tank 2 is 10 mm, and soak for 60 minutes.

[0058] Step 5: Take out the prepreg sample after impregnation and feed it between the pressure rollers of the water absorption device 3 along the length direction. The linear pressure of the second upper pressure roller 301, the third upper pressure roller 302, the second lower pressure roller 304 and the third lower pressure roller 305 are all 100N / m. After completely passing through the water absorption device 3, record the weight m2, accurate to 0.001g.

[0059] Step 6: Calculate the water absorption of a single sample:

[0060] msuction=m2-m1

[0061] The average water absorption of four prepreg samples was taken as the final water absorption to obtain the prepreg impregnation degree.

[0062] The contents described above can be implemented individually or in combination in various ways, and these variations are all within the scope of protection of the present invention.

[0063] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0064] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; and such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for detecting impregnation, characterized in that: The impregnation detection device includes: A pasting device, the pasting device comprising an upper tape roller group and a lower tape roller group, the upper tape roller group being used to paste an upper tape on the upper surface of the prepreg, and the lower tape roller group being used to paste a lower tape on the lower surface of the prepreg; A water immersion tank, the water immersion tank is used to immerse the prepreg after the tape is attached; A water absorbing device, the water absorbing device comprising an upper pressing roller group and a lower pressing roller group that are symmetrical in upper and lower directions, the upper pressing roller group being provided with an upper water absorbing portion, the lower pressing roller group being provided with a lower water absorbing portion, the prepreg after being immersed in water passing between the upper pressing roller group and the lower pressing roller group, the upper water absorbing portion and the lower water absorbing portion being used to absorb excess water on the surface of the prepreg after being immersed in water; A weighing device is used to weigh the prepreg before and after immersion in water.

2. The impregnation detection device according to claim 1, characterized in that: The upper tape roller group includes an upper tape roller, an upper traction roller and a first upper pressure roller arranged in sequence; An upper tape ring is sleeved on the upper tape roller, the upper traction roller and the first upper pressing roller are located on the unwinding path of the tape roll, and the upper traction roller is used to pull the upper tape to stick the upper tape to the upper surface of the prepreg, and the first upper pressing roller is used to apply pressure to press the upper tape tightly on the upper surface of the prepreg.

3. The impregnation detection device according to claim 2, characterized in that: The lower tape roller assembly comprises a lower tape roller, a lower traction roller and a first lower pressure roller which are arranged in sequence; The lower tape roller is provided with a lower tape ring, the lower traction roller and the first lower pressing roller are located on the unwinding path of the tape roll, and the lower traction roller is used to pull the lower tape and stick the lower tape to the lower surface of the prepreg, and the first lower pressing roller is used to apply pressure to press the lower tape tightly to the lower surface of the prepreg.

4. The impregnation detection device according to claim 3, characterized in that: The pasting device also includes a first left support frame, a first right support frame, a second left support frame, a second right support frame, a third left support frame and a third right support frame; The two ends of the upper tape roller and the lower tape roller are respectively connected to the first left support frame and the first right support frame, the two ends of the upper traction roller and the lower traction roller are respectively connected to the second left support frame and the second right support frame, and the two ends of the first upper pressure roller and the first lower pressure roller are respectively connected to the third left support frame and the third right support frame.

5. The impregnation detection device according to claim 1, characterized in that: A plurality of partitions are provided in the immersion tank, and the partitions divide the immersion tank into a plurality of independent immersion spaces. The plurality of immersion spaces are used to simultaneously immerse a plurality of prepregs in water in separate areas.

6. The impregnation detection device according to claim 1, characterized in that: The upper pressing roller group includes a second upper pressing roller and a third upper pressing roller; The second upper pressing roller is arranged in parallel with the third upper pressing roller, and the upper water absorbing portion is arranged on the second upper pressing roller and the third upper pressing roller.

7. The impregnation detection device according to claim 6, characterized in that: The lower pressing roller group includes a second lower pressing roller and a third lower pressing roller; The second lower pressing roller is arranged directly below the second upper pressing roller, the third lower pressing roller is arranged directly below the third upper pressing roller, and the lower water absorbing part is arranged on the second lower pressing roller and the third lower pressing roller.

8. The impregnation detection device according to claim 7, characterized in that: The water absorption device further includes a fourth left support frame, a fourth right support frame, a fifth left support frame and a fifth right support frame; One end of the second upper pressure roller and the second lower pressure roller are connected to the fourth left support frame, the other end of the second upper pressure roller and the second lower pressure roller are connected to the fourth right support frame, one end of the third upper pressure roller and the third lower pressure roller are connected to the fifth left support frame, and the other end of the third upper pressure roller and the third lower pressure roller are connected to the fifth right support frame.

9. The impregnation detection device according to any one of claims 1 to 8, characterized in that: The upper water absorbing part and the lower water absorbing part both include water absorbing cotton.

10. The impregnation detection device according to any one of claims 1 to 8, characterized in that: The upper adhesive tape and the lower adhesive tape both comprise biaxially oriented polypropylene films, and the widths of the upper adhesive tape and the lower adhesive tape are greater than the width of the prepreg.

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