Device and method for testing viscosity of carbon fiber prepreg

Abstract

The invention discloses a carbon fiber prepreg viscosity testing device and a method thereof, and relates to the technical field of prepreg viscosity testing. The device specifically comprises a bottom plate, a box cover is fixedly connected to one side of the top of the bottom plate, a base plate is fixedly connected to one side of the box cover, a connecting plate is fixed to the inner side of the bottom plate through bolts, a supporting plate is fixedly connected to the inner wall of one side of the box cover, a motor is fixed to the top of the supporting plate through bolts, and a rotating mechanism is arranged on one side of the top of the connecting plate. The two sides of the end of the bottom plate are fixedly connected with supports, the opposite sides of the supports are rotationally connected with a fixing frame, the outer wall of the bottom of one side of the fixing frame is fixedly connected with a testing plate, the top of the testing plate is provided with a moving mechanism, and the moving end of the moving mechanism is connected with the rotating mechanism through a connecting piece. According to the invention, not only is the viscosity test of the carbon fiber pre-impregnation liquid realized, but also repeated tests can be completed, the waste of the carbon fiber pre-impregnation liquid is avoided, and the efficiency and the quality of the test of the carbon fiber pre-impregnation liquid are improved.

Description

Technical Field

[0001] The invention relates to the technical field of prepreg viscosity testing, and in particular to a carbon fiber prepreg viscosity testing device and a method thereof. Background Art

[0002] Carbon fiber prepreg is an advanced composite material that is pre-mixed with carbon fiber and resin. When preparing carbon fiber composite materials, the viscosity of the prepreg is a very important performance indicator. The viscosity directly affects the fluidity and formability of the prepreg, which in turn affects the performance and quality of the composite material. In order to ensure that the viscosity of the carbon fiber prepreg meets the requirements, a viscosity test is required. The test can determine the viscosity value of the prepreg, thereby providing reference data for the production process, adjusting the production process, and ensuring product quality. At the same time, the viscosity test can also help researchers understand the rheological properties of the prepreg and provide a basis for further optimizing the formula of the prepreg. Therefore, the viscosity test of carbon fiber prepreg is an indispensable part of the research and production process of carbon fiber composite materials, and is of great significance for improving the performance and quality of composite materials.

[0003] After searching, the invention with Chinese patent publication number CN117433954B discloses a carbon fiber prepreg viscosity testing device, including a workbench, a holding mechanism for holding carbon fiber prepreg liquid is arranged near the left side of the workbench, and a testing mechanism for testing the carbon fiber prepreg liquid is also arranged near the left side of the top of the workbench. The cooperation of the holding mechanism and the testing mechanism provided in the embodiment of the first aspect of the present invention can control the dripping amount of the carbon fiber prepreg liquid, and then observe the flow conditions of the prepreg under different dripping amounts at the same height, and can test and compare the fluidity and coating effect of the prepreg under different flow conditions, and can accurately test the influence of different dripping amounts on the coating characteristics of the prepreg, and find the optimal dripping amount range, so as not to affect the accuracy of the test effect of the carbon fiber prepreg liquid. A carbon fiber prepreg viscosity testing device in the above invention has the following shortcomings:

[0004] Although the above-mentioned device avoids the problems of increased cost and labor caused by the traditional direct replacement method and the manual cleaning method, repeated tests are often required for the accuracy of the test. The device is prone to waste of carbon fiber prepreg liquid during operation. Therefore, there is an urgent need for a carbon fiber prepreg viscosity testing device and method. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a carbon fiber prepreg viscosity testing device and method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A carbon fiber prepreg viscosity testing device comprises a base plate, a box cover is fixedly connected to one side of the top of the base plate, a pad is fixedly connected to one side of the box cover, a connecting plate is fixedly connected to the inner side of the base plate by bolts, a support plate is fixedly connected to an inner wall of one side of the box cover, a motor is fixedly fixed to the top of the support plate by bolts, a rotating mechanism is provided on one side of the top of the connecting plate, and brackets are fixedly connected to both sides of the end of the base plate, a fixed frame is rotatably connected to the opposite side of the bracket, a test plate is fixedly connected to the bottom outer wall of one side of the fixed frame, and a moving mechanism is provided on the top of the test plate, and the moving end of the moving mechanism is connected to the rotating mechanism by a connecting piece.

[0008] Preferably: the rotating mechanism includes a rotating rod, a cam, a support, a roller, a guide rod 1 and a guide rod 2, and the support is fixedly connected to the middle side of the top of the connecting plate by bolts, the roller is rotatably connected to the opposite side of the support, the top outer wall of the support plate is fixedly connected to a stable seat, and the rotating rod is rotatably connected to the inside of the stable seat. The starting motor drives the rotating rod to rotate, the rotating rotating rod drives the cam to rotate slowly, the rotating cam drives the guide rod 2 to pull the guide rod 1 to swing, and at the same time its circumference cooperates with the roller to roll, and the swinging guide rod 1 is pushed to the right.

[0009] Furthermore: the output end of the motor is connected to the end of the rotating rod through a coupling, the cam is connected to the circumferential outer wall of the rotating rod through a thread, the top end of the second guide rod is fixedly connected to the center of one side of the cam, and the first guide rod is rotatably connected to the bottom end of the second guide rod.

[0010] On the basis of the above scheme: the moving mechanism includes a fixed seat, a sliding rod, a sliding sleeve, a moving plate and a guide shaft, and the fixed seat is fixedly connected to the top four corners of the test plate, and the two sliding rods are respectively fixedly connected to the opposite sides of every two fixed seats.

[0011] A better solution in the above solution is: the sliding sleeve is slidably connected to the circumference of the sliding rod, and the two ends of the movable plate are respectively fixedly connected to the opposite sides of the two sliding sleeves, the middle section of the movable plate is provided with a U-shaped groove, and the guide shaft is fixedly connected in the U-shaped groove.

[0012] As a further solution of the present invention: the connecting member includes a U-shaped head, a push plate, a rotating shaft and a guide plate, and the U-shaped head is fixedly connected to the end of the second guide rod, and the rotating shaft is fixedly connected to the inner side of the U-shaped head.

[0013] At the same time, the guide plate is rotatably connected to the circumference of the rotating shaft, and the top end of the guide plate forms a rotational fit with the circumference of the guide shaft, the push plate is fixedly connected to the push plate, and the push plate forms a sliding fit with the inner side of the test plate.

[0014] As a preferred embodiment of the present invention: the bottom of the push plate is provided with slots distributed at equal distances, and an anti-sticking baffle is inserted in the slots. The guide plate and the push plate at the bottom are pushed to move to the right synchronously by the U-shaped head, and the movable plate located on the top side of the guide plate slides on the slide rod through the sliding sleeve to complete the displacement. When the cam protrusion contacts the roller, the fixed frame rotates around the bracket at a certain angle and the fixed frame is lifted. At this time, the carbon fiber prepreg liquid flows downward through the multiple conical holes on one side of the push plate to complete a single viscosity test of the carbon fiber prepreg liquid. The tester records the flow data of each group of different amounts of carbon fiber prepreg liquid through the scale line. Subsequently, the motor continues to rotate, the cam drives the guide rod 2 to pull the guide rod 1 to swing, and the guide plate pulls the push plate to move to the lower side of the inclined test plate. The carbon fiber prepreg liquid on one side of the guide plate passes through the conical holes and returns to the other side of the guide plate.

[0015] At the same time, the push plate is provided with a conical hole near each two insertion slots, and the top outer wall of the test plate is provided with scale lines distributed at equal distances.

[0016] A method for testing the viscosity of carbon fiber prepreg, comprising the following steps:

[0017] S1: drip different amounts of carbon fiber prepreg liquid into each test channel, and separate each group of test liquids by an anti-sticking baffle;

[0018] S2: The motor is started to drive the rotating rod to rotate. The rotating rotating rod drives the cam to rotate slowly. The rotating cam drives the guide rod 2 to pull the guide rod 1 to swing. At the same time, its circumference cooperates with the roller to roll. The swinging guide rod 1 pushes to the right, and the guide plate and the push plate at the bottom are pushed to the right synchronously through the U-shaped head. The moving plate on the top side of the guide plate slides on the sliding rod through the sliding sleeve to complete the displacement.

[0019] S3: When the raised part of the cam contacts the roller, the fixed frame rotates around the bracket at a certain angle and is lifted. The carbon fiber prepreg liquid flows downward through multiple conical holes on one side of the push plate, completing a single viscosity test of the carbon fiber prepreg liquid. The tester records the flow data of each group of different amounts of carbon fiber prepreg liquid through the scale line;

[0020] S4: The motor continues to rotate, the cam drives the guide rod 2 to pull the guide rod 1 to swing, the guide plate pulls the push plate to move to the lower side of the inclined test plate, and the carbon fiber prepreg liquid on one side of the guide plate passes through the conical hole and returns to the other side of the guide plate.

[0021] The beneficial effects of the present invention are:

[0022] The rotating mechanism includes a rotating rod, a cam, a support, a roller, a guide rod one and a guide rod two. The starting motor drives the rotating rod to rotate, and the rotating rotating rod drives the cam to rotate slowly. The rotating cam drives the guide rod two to pull the guide rod one to swing. At the same time, its circumference cooperates with the rolling of the roller, and the swinging guide rod one is pushed to the right. At the same time, the moving mechanism includes a fixed seat, a sliding rod, a sliding sleeve, a moving plate and a guide shaft. The U-shaped head pushes the guide plate and the push plate at the bottom of the guide plate to move synchronously to the right, and the moving plate located on the top side of the guide plate slides on the sliding rod through the sliding sleeve to complete the displacement.

[0023] When the raised part of the cam contacts the roller, the fixed frame rotates around the bracket at a certain angle and is lifted. At this time, the carbon fiber prepreg liquid flows downward through multiple conical holes on one side of the push plate to complete a single viscosity test of the carbon fiber prepreg liquid. The tester records the flow data of each group of different amounts of carbon fiber prepreg liquid through the scale line. Then, the motor continues to rotate, and the cam drives the guide rod 2 to pull the guide rod 1 to swing. The guide plate pulls the push plate to move to the lower side of the inclined test plate, and the carbon fiber prepreg liquid on one side of the guide plate passes through the conical holes and returns to the other side of the guide plate. Therefore, through the reciprocating push of the guide plate and the tilting and swinging of the test plate, not only the viscosity test of the carbon fiber prepreg liquid is achieved, but also repeated tests can be completed, avoiding the waste of the carbon fiber prepreg liquid and improving the efficiency and quality of the carbon fiber prepreg liquid test. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main structure of a carbon fiber prepreg viscosity testing device proposed by the present invention;

[0025] Figure 2 This is a left side structural schematic diagram of a carbon fiber prepreg viscosity testing device proposed by the present invention;

[0026] Figure 3 It is a right side structural schematic diagram of a carbon fiber prepreg viscosity testing device proposed by the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the middle moving mechanism of a carbon fiber prepreg viscosity testing device proposed by the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of a motor in a carbon fiber prepreg viscosity testing device proposed by the present invention;

[0029] Figure 6 This is a schematic structural diagram of a rotating mechanism in a carbon fiber prepreg viscosity testing device proposed by the present invention;

[0030] Figure 7 This is a schematic structural diagram of a connecting member in a carbon fiber prepreg viscosity testing device proposed by the present invention;

[0031] Figure 8 The present invention provides a schematic structural diagram of a push plate in a carbon fiber prepreg viscosity testing device.

[0032] In the figure: 1, bottom plate; 2, box cover; 3, pad; 4, test plate; 5, bracket; 6, fixed frame; 7, support plate; 8, motor; 9, connecting plate; 10, rotating mechanism; 11, anti-sticking baffle; 12, moving mechanism; 13, connecting piece; 14, stable seat; 1001, rotating rod; 1002, cam; 1003, support; 1004, roller; 1005, guide rod 1; 1006, guide rod 2; 1201, fixed seat; 1202, sliding rod; 1203, sliding sleeve; 1204, moving plate; 1205, guide shaft; 1301, U-shaped head; 1302, push plate; 1303, rotating shaft; 1304, guide plate; 13021, tapered hole; 13022, insertion slot. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Embodiment 1:

[0038] A carbon fiber prepreg viscosity testing device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, it includes a base plate 1, a box cover 2 is fixedly connected to one side of the top of the base plate 1, and a pad 3 is fixedly connected to one side of the box cover 2, a connecting plate 9 is fixedly connected to the inner side of the base plate 1 by bolts, a support plate 7 is fixedly connected to the inner wall of one side of the box cover 2, a motor 8 is fixed to the top of the support plate 7 by bolts, a rotating mechanism 10 is arranged on one side of the top of the connecting plate 9, and brackets 5 are fixedly connected to both sides of the end of the base plate 1, a fixed frame 6 is rotatably connected to the opposite side of the bracket 5, a test plate 4 is fixedly connected to the bottom outer wall of one side of the fixed frame 6, and a moving mechanism 12 is arranged on the top of the test plate 4, and the moving end of the moving mechanism 12 is connected to the rotating mechanism 10 by a connecting member 13.

[0039] In order to effectively realize the repeated testing function and avoid the waste of carbon fiber prepreg liquid; Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the rotating mechanism 10 includes a rotating rod 1001, a cam 1002, a support 1003, a roller 1004, a guide rod 1005 and a guide rod 2 1006, and the support 1003 is fixedly connected to the middle side of the top of the connecting plate 9 by bolts, and the roller 1004 is rotatably connected to the opposite side of the support 1003, and the top outer wall of the support plate 7 is fixedly connected with a stable seat 14, and the rotating rod 1001 is rotatably connected to the inside of the stable seat 14, the output end of the motor 8 is connected to the end of the rotating rod 1001 through a coupling, the cam 1002 is connected to the circumferential outer wall of the rotating rod 1001 by threads, the top of the guide rod 2 1006 is fixedly connected to the center of one side of the cam 1002, and the guide rod 1 1005 is rotatably connected to the bottom end of the guide rod 2 1006;

[0040] The moving mechanism 12 includes a fixed seat 1201, a sliding rod 1202, a sliding sleeve 1203, a moving plate 1204 and a guide shaft 1205, and the fixed seat 1201 is fixedly connected to the top four corners of the test plate 4, the two sliding rods 1202 are respectively fixedly connected to the opposite sides of each two fixed seats 1201, the sliding sleeve 1203 is slidably connected to the circumference of the sliding rod 1202, and the two ends of the moving plate 1204 are respectively fixedly connected to the opposite sides of the two sliding sleeves 1203, the middle section of the moving plate 1204 is provided with a U-shaped groove, and the guide shaft 1205 is fixedly connected in the U-shaped groove;

[0041] The connecting member 13 includes a U-shaped head 1301, a push plate 1302, a rotating shaft 1303 and a guide plate 1304, and the U-shaped head 1301 is fixedly connected to the end of the guide rod 1006, the rotating shaft 1303 is fixedly connected to the inner side of the U-shaped head 1301, the guide plate 1304 is rotatably connected to the circumference of the rotating shaft 1303, and the top end of the guide plate 1304 forms a rotating fit with the circumference of the guide shaft 1205, the push plate 1302 is fixedly connected to the push plate 1302, and the push plate 1302 forms a sliding fit with the inner side of the test plate 4.

[0042] In order to facilitate the loading and unloading and replacement of the push plate 1302 and ensure the stability of the test; Figure 8 As shown, the bottom of the push plate 1302 is provided with slots 13022 distributed at equal distances, and an anti-sticking baffle 11 is inserted into the slots 13022. The push plate 1302 is provided with a conical hole 13021 between each two slots 13022, and the top outer wall of the test plate 4 is provided with scale lines distributed at equal distances; the test plate 4 is divided into multiple test channels by multiple groups of anti-sticking baffles 11, which facilitates the observation of the test results;

[0043] During operation, different amounts of carbon fiber prepreg liquid are dripped into each test channel, and each group of test liquids is separated by the anti-sticking baffle 11. Then, the motor 8 is started to drive the rotating rod 1001 to rotate, and the rotating rotating rod 1001 drives the cam 1002 to rotate slowly. The rotating cam 1002 drives the guide rod 2 1006 to pull the guide rod 1 1005 to swing, and at the same time, its circumference rolls with the roller 1004, and the swinging guide rod 1 1005 is pushed to the right, and the guide plate 1304 and the push plate 1302 at the bottom thereof are pushed to the right synchronously through the U-shaped head 1301. The moving plate 1204 located on one side of the top of the guide plate 1304 slides on the slide rod 1202 through the sliding sleeve 1203 to complete the displacement. When the raised part of the cam 1002 contacts the roller 1004, the fixed frame 6 rotates around the bracket 5 at a certain angle, and the fixed frame 6 is lifted. At this time, the carbon fiber prepreg liquid flows downward through the multiple conical holes 13021 on one side of the push plate 1302, completing a single test of the viscosity of the carbon fiber prepreg liquid. The tester records the flow data of each group of different amounts of carbon fiber prepreg liquid through the scale line.

[0044] Then, the motor 8 continues to rotate, the cam 1002 drives the guide rod 2 1006 to pull the guide rod 1 1005 to swing, the guide plate 1304 pulls the push plate 1302 to move to the lower side of the inclined test plate 4, and the carbon fiber prepreg liquid on one side of the guide plate 1304 passes through the conical hole 13021 and returns to the other side of the guide plate 1304;

[0045] Therefore, through the reciprocating push of the guide plate 1304 and the tilting and swinging of the test plate 4, not only the viscosity test of the carbon fiber prepreg liquid is achieved, but also repeated tests can be completed, avoiding the waste of the carbon fiber prepreg liquid and improving the efficiency and quality of the carbon fiber prepreg liquid test.

[0046] Embodiment 2:

[0047] A method for testing the viscosity of carbon fiber prepreg, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the following steps are included:

[0048] S1: dripping different amounts of carbon fiber prepreg liquid into each test channel, and separating each group of test liquids by an anti-sticking baffle 11;

[0049] S2: The motor 8 is started to drive the rotating rod 1001 to rotate. The rotating rotating rod 1001 drives the cam 1002 to rotate slowly. The rotating cam 1002 drives the guide rod 2 1006 to pull the guide rod 1 1005 to swing. At the same time, its circumference rolls with the roller 1004. The swinging guide rod 1 1005 is pushed to the right, and the guide plate 1304 and the push plate 1302 at the bottom thereof are pushed to the right synchronously through the U-shaped head 1301. The moving plate 1204 located on one side of the top of the guide plate 1304 slides on the slide rod 1202 through the sliding sleeve 1203 to complete the displacement.

[0050] S3: When the raised part of the cam 1002 contacts the roller 1004, the fixed frame 6 rotates around the bracket 5 at a certain angle, and the fixed frame 6 is lifted, and the carbon fiber prepreg liquid flows downward through the multiple conical holes 13021 on one side of the push plate 1302, completing a single viscosity test of the carbon fiber prepreg liquid. The tester records the flow data of each group of different amounts of carbon fiber prepreg liquid through the scale lines;

[0051] S4: The motor 8 continues to rotate, the cam 1002 drives the guide rod 2 1006 to pull the guide rod 1 1005 to swing, and the guide plate 1304 pulls the push plate 1302 to move to the lower side of the inclined test plate 4, and the carbon fiber prepreg liquid on one side of the guide plate 1304 passes through the conical hole 13021 and returns to the other side of the guide plate 1304.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A carbon fiber prepreg viscosity testing device, comprising a base plate (1), characterized in that: A box cover (2) is fixedly connected to one side of the top of the bottom plate (1), and a pad (3) is fixedly connected to one side of the box cover (2); a connecting plate (9) is fixedly connected to the inner side of the bottom plate (1) by bolts; a support plate (7) is fixedly connected to the inner wall of one side of the box cover (2); a motor (8) is fixedly connected to the top of the support plate (7) by bolts; a rotating mechanism (10) is provided on one side of the top of the connecting plate (9); brackets (5) are fixedly connected to both sides of the end of the bottom plate (1); a fixed frame (6) is rotatably connected to the opposite side of the bracket (5); a test plate (4) is fixedly connected to the bottom outer wall of one side of the fixed frame (6); a moving mechanism (12) is provided on the top of the test plate (4); and a moving end of the moving mechanism (12) is connected to the rotating mechanism (10) by a connecting piece (13).

2. A carbon fiber prepreg viscosity testing device according to claim 1, characterized in that: The rotating mechanism (10) comprises a rotating rod (1001), a cam (1002), a support (1003), a roller (1004), a guide rod 1 (1005) and a guide rod 2 (1006), wherein the support (1003) is fixedly connected to the middle side of the top of the connecting plate (9) by bolts, the roller (1004) is rotatably connected to the opposite side of the support (1003), the top outer wall of the support plate (7) is fixedly connected to a stabilizing seat (14), and the rotating rod (1001) is rotatably connected to the inside of the stabilizing seat (14).

3. A carbon fiber prepreg viscosity testing device according to claim 2, characterized in that: The output end of the motor (8) is connected to the end of the rotating rod (1001) through a coupling, the cam (1002) is connected to the circumferential outer wall of the rotating rod (1001) through a thread, the top end of the second guide rod (1006) is fixedly connected to the center of one side of the cam (1002), and the first guide rod (1005) is rotatably connected to the bottom end of the second guide rod (1006).

4. A carbon fiber prepreg viscosity testing device according to claim 1, characterized in that: The moving mechanism (12) comprises a fixed seat (1201), a sliding rod (1202), a sliding sleeve (1203), a moving plate (1204) and a guide shaft (1205), wherein the fixed seat (1201) is fixedly connected to the top four corners of the test plate (4), and the two sliding rods (1202) are respectively fixedly connected to the opposite sides of every two fixed seats (1201).

5. A carbon fiber prepreg viscosity testing device according to claim 4, characterized in that: The sliding sleeve (1203) is slidably connected to the circumference of the sliding rod (1202), and the two ends of the moving plate (1204) are respectively fixedly connected to the opposite sides of the two sliding sleeves (1203). The middle section of the moving plate (1204) is provided with a U-shaped groove, and the guide shaft (1205) is fixedly connected in the U-shaped groove.

6. A carbon fiber prepreg viscosity testing device according to claim 1, characterized in that: The connecting member (13) comprises a U-shaped head (1301), a push plate (1302), a rotating shaft (1303) and a guide plate (1304), wherein the U-shaped head (1301) is fixedly connected to the end of the second guide rod (1006), and the rotating shaft (1303) is fixedly connected to the inner side of the U-shaped head (1301).

7. A carbon fiber prepreg viscosity testing device according to claim 6, characterized in that: The guide plate (1304) is rotatably connected to the circumference of the rotating shaft (1303), and the top end of the guide plate (1304) forms a rotational fit with the circumference of the guide shaft (1205), the push plate (1302) is fixedly connected to the push plate (1302), and the push plate (1302) forms a sliding fit with the inner side of the test plate (4).

8. A carbon fiber prepreg viscosity testing device according to claim 7, characterized in that: The bottom of the push plate (1302) is provided with insertion slots (13022) distributed at equal distances, and an anti-sticking baffle (11) is inserted into the insertion slots (13022).

9. A carbon fiber prepreg viscosity testing device according to claim 8, characterized in that: The push plate (1302) is provided with a conical hole (13021) near each two insertion slots (13022), and the top outer wall of the test plate (4) is provided with scale lines distributed at equal distances.

10. A method for testing the viscosity of carbon fiber prepreg according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: dripping different amounts of carbon fiber prepreg liquid into each test channel, and separating each group of test liquids by an anti-sticking baffle (11); S2: The motor (8) is started to drive the rotating rod (1001) to rotate. The rotating rotating rod (1001) drives the cam (1002) to rotate slowly. The rotating cam (1002) drives the guide rod 2 (1006) to pull the guide rod 1 (1005) to swing. At the same time, its circumference rolls with the roller (1004). The swinging guide rod 1 (1005) is pushed to the right, and the guide plate (1304) and the push plate (1302) at the bottom thereof are pushed to the right synchronously through the U-shaped head (1301). The moving plate (1204) located on one side of the top of the guide plate (1304) slides on the slide rod (1202) through the sliding sleeve (1203) to complete the displacement. S3: When the raised portion of the cam (1002) contacts the roller (1004), the fixed frame (6) rotates around the bracket (5) at a certain angle, and the fixed frame (6) is lifted, and the carbon fiber prepreg liquid flows downward through the multiple conical holes (13021) on one side of the push plate (1302), completing a single viscosity test of the carbon fiber prepreg liquid. The tester records the flow data of each group of different amounts of carbon fiber prepreg liquid through the scale lines; S4: The motor (8) continues to rotate, the cam (1002) drives the guide rod 2 (1006) to pull the guide rod 1 (1005) to swing, and the guide plate (1304) pulls the push plate (1302) to move toward the lower side of the inclined test plate (4), and the carbon fiber prepreg liquid on one side of the guide plate (1304) passes through the conical hole (13021) and returns to the other side of the guide plate (1304).

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