Impact needling test device and method for carbon fiber unidirectional resin composite board

Abstract

The invention discloses an impact needling test device and method for a carbon fiber unidirectional resin composite board, and relates to the technical field of board performance test, and the impact needling test device comprises a test board, a carbon fiber composite board conveying assembly, an impact assembly, an automatic feeding mechanism and a needling needle integrated adjusting assembly. According to the impact acupuncture test device and method for the carbon fiber one-way resin composite board, the carbon fiber composite board is clamped and positioned through the carbon fiber composite board conveying assembly, meanwhile, one-time displacement of the carbon fiber composite board by a set distance can be achieved in cooperation with the impact assembly after one-time impact test is completed, and the purpose of testing different point positions is achieved; by matching with the arrangement of the pricking pin integrated adjusting assembly, pricking pins of different sizes are circumferentially placed, the pricking pins are used as impact heads, and after one impact test is completed, the pricking pins of different sizes are automatically replaced as new impact heads, so that the impact test effect of different impact strengths and different point locations is achieved; and the testing efficiency of the carbon fiber composite board is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of plate performance testing, and in particular to a carbon fiber unidirectional resin composite plate impact needle puncture test device and method. Background Art

[0002] Carbon fiber composite materials refer to structural or functional materials made by compounding materials such as resin, metal, ceramic and rubber as the matrix and carbon fiber as the reinforcement material. According to the different matrix materials, carbon fiber composite materials can be divided into resin-based composite materials, metal-based composite materials, ceramic-based composite materials and rubber-based composite materials. Among them, resin-based composite materials refer to composite materials made of resin as the matrix and carbon fiber as the reinforcement material.

[0003] In order to ensure the good mechanical properties of carbon fiber reinforced resin-based composite materials during actual application, performance tests are often required. When testing carbon fiber reinforced resin-based composite materials at different impact intensities, the conventional testing method is to simply use a set of impact heads to perform impact tests on the same position of the carbon fiber reinforced resin-based composite materials. The test efficiency is low and the impact load capacity of the carbon fiber reinforced resin-based composite materials under different impact intensities cannot be quickly obtained. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a carbon fiber unidirectional resin composite plate impact needle penetration test device and method, which solves the above-mentioned problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a carbon fiber unidirectional resin composite plate impact needle test device, comprising a test bench and an automatic feeding mechanism, a carbon fiber composite plate conveying assembly is arranged inside the test bench, the carbon fiber composite plate conveying assembly is used to convey the carbon fiber composite plate, an impact assembly is arranged on the top of the test bench, and a needle integrated adjustment assembly is arranged at the output end of the impact assembly; The automatic feeding mechanism includes a feeding table, and the feeding table includes a bracket, an adjusting box is fixed on the bracket, two output ends of the adjusting box are connected to side limit plates, a rear limit plate is fixed on the adjusting box, and a front limit plate is detachably installed on the side limit plate, and the distance between the front limit plate and the rear limit plate is adjustable, and the distance between the front limit plate and the top of the feeding table is greater than the thickness of a carbon fiber composite board and less than the thickness of two carbon fiber composite boards. A reciprocating driving assembly is also installed on the feeding table, and the reciprocating driving assembly includes a vertical part and a horizontal part, the height of the vertical part is the same as the thickness of the carbon fiber composite board, and the length of the horizontal part is greater than the length of the carbon fiber composite board.

[0006] The present invention is further configured as follows: the carbon fiber composite plate conveying assembly includes two hydraulic cylinders, the telescopic end of the hydraulic cylinder is fixedly connected to a first docking plate, one side of the first docking plate is fixedly connected to a second docking plate via a connecting plate, the tops of the first docking plate and the second docking plate are both provided with a stepped groove, a slider is slidably installed inside the stepped groove, a threaded rod is fixedly connected to the top of the slider, an extrusion plate is jointly sleeved and slidably installed on the outer periphery of the two threaded rods, a fastening nut is also sleeved on the outer periphery of the threaded rod, and the bottom of the fastening nut is in contact with the top of the extrusion plate.

[0007] The present invention is further configured as follows: an impact groove and two placement grooves are provided at the bottom of the test bench, and the two placement grooves are respectively provided on both sides of the impact groove; The two hydraulic cylinders are fixedly installed inside the two impact grooves respectively, and the two first docking plates are slidably installed inside the two impact grooves respectively, and the bottom of the second docking plate is in sliding contact with the top of the hydraulic cylinder.

[0008] The present invention is further configured as follows: the impact assembly comprises a mounting frame, the top of the mounting frame is fixedly connected to a punching cylinder, and the telescopic end of the punching cylinder penetrates the mounting frame and is fixedly connected to an assembly plate.

[0009] The present invention is further configured as follows: convex trigger plates are fixedly connected to both sides of the assembly plate, and a trigger button is fixedly connected to the surface of the mounting frame via a connecting frame, the trigger button is used in conjunction with the convex trigger plate, two trigger buttons are provided, and the two trigger buttons are used in conjunction with two hydraulic cylinders respectively.

[0010] The present invention is further configured as follows: the needle integrated adjustment assembly includes a fixing plate, one side of the fixing plate is fixedly connected to a first servo motor, an output end of the first servo motor passes through the fixing plate and is fixedly connected to a sleeve, stepped holes are provided around the sleeve, and the insides of the four stepped holes are provided with needles; The fixing plate is fixedly mounted on the bottom of the assembly plate, and the trigger button is used in conjunction with the first servo motor.

[0011] The present invention is further configured as follows: an extrusion column is slidably installed inside the sleeve, the extrusion column is used in conjunction with the puncture needle, and one end of the extrusion column is fixedly connected to an L-shaped plate, the top of the L-shaped plate is in sliding contact with the bottom of the assembly plate, the top of the fixed plate is provided with a slot adapted to the L-shaped plate, the top of the assembly plate is penetrated by and threadedly installed with a fastening bolt, and one side of the top of the L-shaped plate is provided with a through hole adapted to the fastening bolt.

[0012] The present invention is further configured as follows: a reciprocating screw is rotatably installed on the bottom end of the loading platform, and a first horizontal moving bar is installed on the external thread of the reciprocating screw, the first horizontal moving bar is movably installed on the bottom end of the loading platform through a guide rail, the bottom end of the vertical part passes through the loading platform and is fixed to the first horizontal moving bar, the reciprocating screw is driven to rotate by a second servo motor, a horizontally arranged mounting bar is provided on the top of the loading platform, an adjusting sleeve is provided on the mounting bar, a locking bolt is provided on the adjusting sleeve, a mounting piece is connected to the adjusting sleeve through a connecting rod, a mounting hole is opened on the mounting piece, a front limit plate is inserted into the mounting hole, and a disassembly pull ring is fixed on the top of the front limit plate.

[0013] The present invention is further configured as follows: a bidirectional threaded rod is rotatably installed in the rear limit plate, and a second horizontal movement bar is threadedly installed on the outer sides of the threads at both ends of the bidirectional threaded rod, and a support rod is fixed on the second horizontal movement bar. The two support rods are respectively fixed to the two side limit plates, and one end of the bidirectional threaded rod extends to the outside of the rear adjustment box where an adjustment handwheel is fixed.

[0014] The present invention also discloses a carbon fiber unidirectional resin composite plate impact needle penetration test method, which specifically comprises the following steps: Step 1: Place the carbon fiber composite plate on the two first docking plates and the two second docking plates, then put the extrusion plate on the two threaded rods, adjust the position of the extrusion plate, and the extrusion plate drives the threaded rods to move to the two sides of the carbon fiber composite plate. During the process, the threaded rods drive the sliders to slide in the stepped grooves, and then tighten the fastening nuts to complete the clamping and positioning of the carbon fiber composite plate; Step 2: Start the punching cylinder, which drives the assembly plate to descend, and the assembly plate drives the needle integrated adjustment assembly to move downward, so that the needle initiates an impact test on the carbon fiber composite plate, and then controls the punching cylinder to reset; Step 3: During the reset process of the stamping cylinder, the assembly plate drives the convex trigger plate to squeeze the trigger button, and the trigger button controls the hydraulic cylinder to shrink a set distance. At this time, the hydraulic cylinder drives the first docking plate to make the threaded rod push the carbon fiber composite plate to move a set distance; At the same time, the trigger button controls the first servo motor to rotate 90 degrees, the first servo motor drives the sleeve to rotate, and the sleeve drives the needle to rotate, so that adjacent needles of different sizes are vertically facing the carbon fiber composite board; Step 4: Repeat steps 2 and 3 to complete the impact test on the carbon fiber composite plate.

[0015] The present invention provides a carbon fiber unidirectional resin composite plate impact needle penetration test device and method. It has the following beneficial effects: (1) The present invention not only clamps and positions the carbon fiber composite plate through the carbon fiber composite plate conveying assembly, but also cooperates with the impact assembly to achieve a displacement of the carbon fiber composite plate by a set distance after completing an impact test, thereby achieving the purpose of testing at different points. In addition, in conjunction with the setting of the needle integrated adjustment assembly, needles of different sizes are placed circumferentially and used as impact heads. After completing an impact test, needles of different sizes are automatically replaced as new impact heads to achieve impact test effects at different points with different impact intensities, thereby effectively improving the testing efficiency of the carbon fiber composite plate.

[0016] (2) The present invention facilitates the assembly and disassembly of needles of different sizes by providing a sleeve, four stepped holes and four needles. Under the provision of an extrusion column, the stability of the connection between the needle and the sleeve is ensured. In addition, the position of the extrusion column is effectively limited by the provision of an L-shaped plate, a slot, a fastening bolt and a through hole, and has the positive effect of convenient assembly and disassembly.

[0017] (3) The automatic loading mechanism can push out the composite panels one by one, making it convenient for the staff to take them and transfer them to the test bench for testing. Compared with the traditional manual transfer and retrieval by staff, it is more labor-saving and efficient, reducing the labor intensity of the staff. The staff only needs to take the composite panels from a specific position, and does not need to take them from a higher position, thus avoiding the physical consumption caused by frequently transferring heavy composite panels from a higher position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the external structure of the present invention; Figure 2 It is a schematic diagram of the connection between the hydraulic cylinder and the placement groove structure of the present invention; Figure 3 It is a structural schematic diagram of the carbon fiber composite plate conveying assembly of the present invention; Figure 4 It is a schematic diagram of the connection between the impact assembly and the needle integrated adjustment assembly structure of the present invention; Figure 5 It is a structural schematic diagram of the needle integrated adjustment assembly of the present invention; Figure 6 It is a front view of the loading platform of the present invention; Figure 7 This is an enlarged detail view of the loading platform bracket of the present invention from the first perspective; Figure 8 A three-dimensional diagram of a loading platform of the present invention; Fig. 9 This is a schematic diagram of the bottom of the material loading device of the present invention; Fig.10 This is an enlarged detail view of the loading platform bracket of the present invention from a second viewing angle; Fig.11This is an enlarged detail view of the position of the reciprocating screw rod on the loading table of the present invention; Fig.12 It is a cross-sectional view of the adjustment box of the needle integrated adjustment assembly of the present invention.

[0019] In the figure, 1, test bench; 2, carbon fiber composite plate conveying assembly; 3, impact assembly; 4, needle integrated adjustment assembly; 5, hydraulic cylinder; 6, first docking plate; 7, connecting plate; 8, second docking plate; 9, stepped groove; 10, slider; 11, threaded rod; 12, extrusion plate; 13, fastening nut; 14, impact groove; 15, placement groove; 16, mounting frame; 17, stamping cylinder; 18, assembly plate; 19, convex trigger plate; 20, trigger button; 21, fixing plate; 22, first servo motor; 23, sleeve; 24, stepped hole; 25, needle ; 26. Extrusion column; 27. L-shaped plate; 28. Slot; 29. ​​Fastening bolt; 30. Through hole; 31. Loading table; 32. Reciprocating screw; 33. First horizontal moving bar; 34. Vertical part; 35. Horizontal part; 37. Bracket; 38. Adjustment box; 39. Side limit plate; 40. Rear limit plate; 41. Mounting bar; 42. Adjustment sleeve; 43. Locking bolt; 44. Mounting piece; 45. Front limit plate; 46. Disassembly and assembly pull ring; 47. Material removal notch; 48. Bidirectional threaded rod; 49. Second horizontal moving bar; 50. Support rod; 51. Adjustment handwheel. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] See also Figure 1-12 , the embodiment of the present invention provides the following two technical solutions: Example 1

[0022] A carbon fiber unidirectional resin composite plate impact needle puncture test device comprises a test bench 1, a carbon fiber composite plate conveying component 2, an impact component 3, an automatic feeding mechanism and a needle integrated adjustment component 4.

[0023] As a preferred solution, the automatic feeding mechanism includes a feeding platform 31, the feeding platform 31 includes a bracket 37, an adjusting box 38 is fixed on the bracket 37, both output ends of the adjusting box 38 are connected to side limit plates 39, a rear limit plate 40 is fixed on the adjusting box 38, and a front limit plate 45 is also detachably installed on the side limit plate 39, the distance between the front limit plate 45 and the rear limit plate 40 is adjustable, and the distance between the front limit plate 45 and the top of the feeding platform 31 is greater than the thickness of a carbon fiber composite board and less than the thickness of two carbon fiber composite boards. A reciprocating push assembly is also installed on the feeding platform 31, and the reciprocating push assembly includes a vertical portion 34 and a horizontal portion 3 5. The height of the vertical portion 34 is the same as the thickness of the carbon fiber composite board, and the length of the horizontal portion 35 is greater than the length of the carbon fiber composite board. The composite board to be tested is stacked on the loading platform 31. First, the front limit plate 45 is removed, and the stacked composite board is pushed between the two side limit plates 39, and one side of the composite board is in contact with the rear limit plate 40. Then, the front limit plate 45 is reinstalled, and the spacing between the front limit plate 45 and the rear limit plate 40 is adjusted so that the rear limit plate 40 is in contact with the composite board, so that the position of the composite board can be limited by each limit plate, so that the composite board will not be offset or scattered during the loading process. When loading, refer to Figure 6 When the vertical portion 34 moves to the right, it will push the lowest composite board to move to the right, and the horizontal portion 35 will support the composite board above it to ensure that the position of the upper composite board does not change, and finally push the lowest composite board to the right side of the front limit plate 45, and then the vertical portion 34 moves to the left. When the vertical portion 34 moves to the left side of the rear limit plate 40, the remaining composite boards will move downward as a whole by the thickness of the composite board without the support of the horizontal portion 35. This can be repeated to push out the composite boards one by one, which is convenient for the staff to take and turn. Moving to the test bench 1 for testing is more labor-saving and efficient than the traditional manual transfer and retrieval by staff, and reduces the labor intensity of staff. Staff only need to take the composite board from a specific position, and do not need to take it from a higher position, thus avoiding the physical energy consumption caused by frequently transferring heavy composite boards from higher positions. Material taking notches 47 are provided on both sides of the loading platform 31, and staff can put their hands on the material taking notches 47, so that they can more conveniently pick up the composite board from the top of the loading platform 31 from both sides of the composite board.

[0024] As a preferred solution, in order to ensure the stability of the carbon fiber composite plate during the impact test, the carbon fiber composite plate conveying assembly 2 includes two hydraulic cylinders 5, the telescopic end of the hydraulic cylinder 5 is fixedly connected to the first docking plate 6, and one side of the first docking plate 6 is fixedly connected to the second docking plate 8 through the connecting plate 7. The bottom of the test bench 1 is provided with an impact groove 14 and two placement grooves 15, and the two placement grooves 15 are respectively arranged on both sides of the impact groove 14. The two hydraulic cylinders 5 are respectively fixedly installed inside the two impact grooves 14, and the two first docking plates 6 are respectively slidably installed inside the two impact grooves 14. The bottom of the second docking plate 8 is in sliding contact with the top of the hydraulic cylinder 5. The tops of the first docking plate 6 and the second docking plate 8 are both provided with a stepped groove 9, and a slider 10 is slidably installed inside the stepped groove 9. The top of the slider 10 is fixedly connected with a threaded rod 11, and the outer periphery of the two threaded rods 11 is jointly sleeved and slidably installed with an extrusion plate 12. The outer periphery of the threaded rod 11 is also sleeved with a fastening nut 13, and the bottom of the fastening nut 13 is in contact with the top of the extrusion plate 12.

[0025] It is further explained that by controlling the extension and contraction of the hydraulic cylinder 5, the position of the carbon fiber composite plate can also be adjusted.

[0026] As a preferred solution, the impact assembly 3 includes a mounting frame 16, the top of the mounting frame 16 is fixedly connected to a punching cylinder 17, the telescopic end of the punching cylinder 17 passes through the mounting frame 16 and is fixedly connected to an assembly plate 18, and the needle integrated adjustment assembly 4 is arranged below the assembly plate 18. Specifically, the needle integrated adjustment assembly 4 includes a fixing plate 21, the fixing plate 21 is fixedly mounted on the bottom of the assembly plate 18, one side of the fixing plate 21 is fixedly connected to a first servo motor 22, the output end of the first servo motor 22 passes through the fixing plate 21 and is fixedly connected to a sleeve 23, and the sleeve 23 is provided with stepped holes 24 all around, and the insides of the four stepped holes 24 are provided with needles 25, as shown in the attached Figure 5 As shown, the four thorn needles 25 all include an arc-shaped gasket and a thorn head, and the sizes of the four thorn heads are different. In order to ensure the stable contact between the thorn needle 25 and the sleeve 23, so as to facilitate the stable use of the thorn head as an impact head, an extrusion column 26 is slidably installed inside the sleeve 23. The extrusion column 26 is used in conjunction with the thorn needle 25, and one end of the extrusion column 26 is fixedly connected to an L-shaped plate 27. The top of the L-shaped plate 27 is in sliding contact with the bottom of the assembly plate 18. The top of the fixing plate 21 is provided with a slot 28 that is compatible with the L-shaped plate 27. The top of the assembly plate 18 is penetrated and threadedly installed with a fastening bolt 29, and one side of the top of the L-shaped plate 27 is provided with a through hole 30 that is compatible with the fastening bolt 29.

[0027] In this embodiment, different needles 25 can be easily assembled and disassembled, and when the carbon fiber composite board is impact tested, different needles 25 can be used to perform convenient impact tests, and the position of the carbon fiber composite board can be moved and adjusted to ensure the relative accuracy of the test results.

[0028] As a preferred solution, a reciprocating screw rod 32 is rotatably installed at the bottom end of the loading platform 31, and a first horizontal moving bar 33 is installed on the external thread of the reciprocating screw rod 32. The first horizontal moving bar 33 is movably installed at the bottom end of the loading platform 31 through a guide rail. The bottom end of the vertical portion 34 passes through the loading platform 31 and is fixed to the first horizontal moving bar 33. The reciprocating screw rod 32 is driven to rotate by a second servo motor 33. A horizontally arranged mounting bar 41 is provided at the top end of the loading platform 31. An adjusting sleeve 42 is sleeved on the mounting bar 41. A locking bolt 43 is provided on the adjusting sleeve 42. A mounting member 44 is connected to the adjusting sleeve 42 through a connecting rod. A mounting hole is opened on the mounting member 44. A front limit plate 45 is inserted into the mounting hole, and a disassembly pull ring 46 is fixed to the top end of the front limit plate 45. The reciprocating screw rod 32 can be driven to rotate by the second servo motor 33, thereby driving the first horizontal moving bar 33 to move horizontally, and then driving the vertical part 34 to move horizontally, so as to achieve the purpose of automatic loading. The adjustment sleeve 42 can slide horizontally on the mounting bar 41, so as to be adjusted according to the size of different composite panels.

[0029] As a preferred solution, a bidirectional threaded rod 48 is rotatably installed in the rear limit plate 40, and a second horizontal moving bar 49 is threadedly installed on the outer threads of both ends of the bidirectional threaded rod 48, and a support rod 50 is fixed on the second horizontal moving bar 49. The two support rods 50 are respectively fixed to the two side limit plates 39, and one end of the bidirectional threaded rod 48 extends to the outside of the rear adjustment box 38 and is fixed with an adjustment hand wheel 51; By adjusting the hand wheel 51 to drive the bidirectional threaded rod 48 to rotate, the two second horizontal moving bars 49 can be driven to move closer to or away from each other, thereby adjusting the distance between the two side limit plates 39 according to the size of different composite panels. Example 2

[0030] This embodiment is an improvement of the previous embodiment. It is a carbon fiber unidirectional resin composite panel impact needle penetration test device, which also includes a convex trigger plate 19 fixedly connected to both sides of the assembly plate 18, and a trigger button 20 is fixedly connected to the surface of the mounting frame 16 through a connecting frame. The trigger button 20 is used in conjunction with the convex trigger plate 19. Two trigger buttons 20 are provided. The two trigger buttons 20 are used in conjunction with two hydraulic cylinders 5 respectively, and the trigger button 20 is used in conjunction with the first servo motor 22.

[0031] The advantage of the second embodiment over the first embodiment is that by using the setting of the trigger button 20, the trigger button 20 can be squeezed after the punching cylinder 17 completes a lifting stroke, so as to realize the automatic displacement of the carbon fiber composite plate and the automatic rotation and replacement of the needle 25, which has a good advantage of automated testing.

[0032] A carbon fiber unidirectional resin composite plate impact needle penetration test method specifically comprises the following steps: Step 1: Place the carbon fiber composite plate on the two first docking plates 6 and the two second docking plates 8, then put the extrusion plate 12 on the two threaded rods 11, adjust the position of the extrusion plate 12, and the extrusion plate 12 drives the threaded rods 11 to move to the two sides of the carbon fiber composite plate. During the process, the threaded rods 11 drive the slider 10 to slide in the stepped groove 9, and then tighten the fastening nut 13 to complete the clamping and positioning of the carbon fiber composite plate; Step 2, start the punching cylinder 17, the punching cylinder 17 drives the assembly plate 18 to descend, the assembly plate 18 drives the needle integrated adjustment assembly 4 to move downward, so that the needle 25 initiates an impact test on the carbon fiber composite plate, and then controls the punching cylinder 17 to reset; Step 3: During the resetting process of the punching cylinder 17, the assembly plate 18 drives the convex trigger plate 19 to squeeze the trigger button 20, and the trigger button 20 controls the hydraulic cylinder 5 to contract a set distance. At this time, the hydraulic cylinder 5 drives the first docking plate 6 to make the threaded rod 11 push the carbon fiber composite plate to move a set distance; At the same time, the trigger button 20 controls the first servo motor 22 to rotate ninety degrees, the first servo motor 22 drives the sleeve 23 to rotate around the extrusion column 26, and the sleeve 23 drives the needle 25 to rotate, so that the adjacent needles 25 of different sizes are vertically facing the carbon fiber composite plate; Step 4: Repeat steps 2 and 3 to complete the impact test on the carbon fiber composite plate.

[0033] As an expanded explanation, when the needle 25 needs to be replaced, unscrew the fastening bolt 29. After the fastening bolt 29 is disengaged from the through hole 30, the L-shaped plate 27 can be pulled out from the slot 28. After the L-shaped plate 27 drives the extrusion column 26 to disengage from the sleeve 23, the needle 25 can be directly replaced.

Claims

1. A carbon fiber unidirectional resin composite plate impact needle penetration test device, comprising a test bench (1) and an automatic feeding mechanism, characterized in that: A carbon fiber composite plate conveying assembly (2) is arranged inside the test bench (1), and the carbon fiber composite plate conveying assembly (2) is used to convey the carbon fiber composite plate. An impact assembly (3) is arranged on the top of the test bench (1), and a needle integrated adjustment assembly (4) is arranged at the output end of the impact assembly (3); The automatic feeding mechanism comprises a feeding platform (31), the feeding platform (31) comprises a bracket (37), an adjusting box (38) is fixed on the bracket (37), two output ends of the adjusting box (38) are connected to side limit plates (39), a rear limit plate (40) is fixed on the adjusting box (38), a front limit plate (45) is detachably mounted on the side limit plate (39), the spacing between the front limit plate (45) and the rear limit plate (40) is adjustable, the spacing between the front limit plate (45) and the top of the feeding platform (31) is greater than the thickness of one carbon fiber composite board and less than the thickness of two carbon fiber composite boards, and a reciprocating push assembly is also mounted on the feeding platform (31), the reciprocating push assembly comprises a vertical portion (34) and a horizontal portion (35), the height of the vertical portion (34) is the same as the thickness of the carbon fiber composite board, and the length of the horizontal portion (35) is greater than the length of the carbon fiber composite board.

2. The carbon fiber unidirectional resin composite plate impact needle penetration test device according to claim 1, characterized in that: The carbon fiber composite plate conveying assembly (2) comprises two hydraulic cylinders (5), the telescopic ends of the hydraulic cylinders (5) are fixedly connected to a first docking plate (6), one side of the first docking plate (6) is fixedly connected to a second docking plate (8) via a connecting plate (7), the tops of the first docking plate (6) and the second docking plate (8) are both provided with a stepped groove (9), a slider (10) is slidably mounted inside the stepped groove (9), the top of the slider (10) is fixedly connected to a threaded rod (11), the outer circumferences of the two threaded rods (11) are jointly sleeved and slidably mounted with an extrusion plate (12), the outer circumferences of the threaded rods (11) are also sleeved with a fastening nut (13), and the bottom of the fastening nut (13) is in contact with the top of the extrusion plate (12).

3. The carbon fiber unidirectional resin composite plate impact needle penetration test device according to claim 2, characterized in that: The bottom of the test bench (1) is provided with an impact groove (14) and two placement grooves (15), and the two placement grooves (15) are respectively arranged on both sides of the impact groove (14); The two hydraulic cylinders (5) are respectively fixedly mounted inside the two impact grooves (14), and the two first docking plates (6) are respectively slidably mounted inside the two impact grooves (14), and the bottom of the second docking plate (8) is in sliding contact with the top of the hydraulic cylinder (5).

4. The carbon fiber unidirectional resin composite plate impact needle penetration test device according to claim 3, characterized in that: The impact assembly (3) comprises a mounting frame (16), the top of the mounting frame (16) being fixedly connected to a punching cylinder (17), and the telescopic end of the punching cylinder (17) passing through the mounting frame (16) and being fixedly connected to an assembly plate (18).

5. The carbon fiber unidirectional resin composite plate impact needle penetration test device according to claim 4, characterized in that: Both sides of the assembly plate (18) are fixedly connected to convex trigger plates (19), and the surface of the mounting frame (16) is fixedly connected to a trigger button (20) via a connecting frame. The trigger button (20) is used in conjunction with the convex trigger plate (19). Two trigger buttons (20) are provided, and the two trigger buttons (20) are used in conjunction with two hydraulic cylinders (5) respectively.

6. The carbon fiber unidirectional resin composite plate impact needle penetration test device according to claim 5, characterized in that: The needle integrated adjustment assembly (4) comprises a fixing plate (21), one side of the fixing plate (21) is fixedly connected to a first servo motor (22), an output end of the first servo motor (22) passes through the fixing plate (21) and is fixedly connected to a sleeve (23), the sleeve (23) is provided with stepped holes (24) on all sides, and the insides of the four stepped holes (24) are provided with needles (25); The fixing plate (21) is fixedly mounted on the bottom of the assembly plate (18), and the trigger button (20) is used in conjunction with the first servo motor (22).

7. The carbon fiber unidirectional resin composite plate impact needle penetration test device according to claim 6, characterized in that: An extrusion column (26) is slidably mounted inside the sleeve (23), the extrusion column (26) is used in conjunction with the puncture needle (25), and one end of the extrusion column (26) is fixedly connected to an L-shaped plate (27), the top of the L-shaped plate (27) is in sliding contact with the bottom of the assembly plate (18), the top of the fixing plate (21) is provided with a slot (28) matched with the L-shaped plate (27), the top of the assembly plate (18) is penetrated by and threadedly mounted with a fastening bolt (29), and one side of the top of the L-shaped plate (27) is provided with a through hole (30) matched with the fastening bolt (29).

8. The carbon fiber unidirectional resin composite plate impact needle penetration test device according to claim 1, characterized in that: A reciprocating screw (32) is rotatably mounted on the bottom end of the loading platform (31), and a first horizontal moving bar (33) is mounted on the external thread of the reciprocating screw (32). The first horizontal moving bar (33) is movably mounted on the bottom end of the loading platform (31) through a guide rail. The bottom end of the vertical portion (34) passes through the loading platform (31) and is fixed to the first horizontal moving bar (33). The reciprocating screw (32) is driven to rotate by a second servo motor (33). A horizontally arranged mounting bar (41) is provided on the top end of the loading platform (31). An adjusting sleeve (42) is sleeved on the mounting bar (41). A locking bolt (43) is provided on the adjusting sleeve (42). A mounting member (44) is connected to the adjusting sleeve (42) through a connecting rod. A mounting hole is opened on the mounting member (44). A front limit plate (45) is inserted into the mounting hole, and a disassembly pull ring (46) is fixed on the top end of the front limit plate (45).

9. The carbon fiber unidirectional resin composite plate impact needle penetration test device according to claim 1, characterized in that: A bidirectional threaded rod (48) is rotatably mounted inside the rear limit plate (40), and second horizontal movement bars (49) are threadedly mounted on the outer sides of the threads at both ends of the bidirectional threaded rod (48), and a support rod (50) is fixed on the second horizontal movement bar (49). The two support rods (50) are respectively fixed to the two side limit plates (39), and one end of the bidirectional threaded rod (48) extends to the outside of the rear adjustment box (38) and is fixed with an adjustment hand wheel (51).

10. A carbon fiber unidirectional resin composite plate impact needle penetration test method, implemented by a carbon fiber unidirectional resin composite plate impact needle penetration test device according to any one of claims 1 to 9, characterized in that: The specific steps include: S1. Place the carbon fiber composite plate on two first docking plates (6) and two second docking plates (8), then put the extrusion plate (12) on the two threaded rods (11), adjust the position of the extrusion plate (12), and drive the threaded rods (11) to move to the two sides of the carbon fiber composite plate. During the process, the threaded rods (11) drive the sliders (10) to slide in the stepped grooves (9), and then tighten the fastening nuts (13) to complete the clamping and positioning of the carbon fiber composite plate; S2, starting the punching cylinder (17), the punching cylinder (17) drives the assembly plate (18) to move downward, the assembly plate (18) drives the needle integrated adjustment assembly (4) to move downward, so that the needle (25) initiates an impact test on the carbon fiber composite plate, and then controls the punching cylinder (17) to reset; S3, during the resetting process of the punching cylinder (17), the assembly plate (18) drives the convex trigger plate (19) to squeeze the trigger button (20), and the trigger button (20) controls the hydraulic cylinder (5) to retract a set distance. At this time, the hydraulic cylinder (5) drives the first docking plate (6) to make the threaded rod (11) push the carbon fiber composite plate to move a set distance; At the same time, the trigger button (20) controls the first servo motor (22) to rotate ninety degrees, the first servo motor (22) drives the sleeve (23) to rotate, and the sleeve (23) drives the needles (25) to rotate, so that adjacent needles (25) of different sizes are vertically oriented toward the carbon fiber composite plate; S3. Repeat the operations of S2 and S3 to complete the impact test on the carbon fiber composite plate.

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