Stretching and bending performance testing mechanism for wire harness production and testing method thereof

Abstract

The invention provides a stretching and bending performance testing mechanism for wire harness production and a testing method thereof, and relates to the field of wire harness stretching and bending performance testing. According to the stretching and bending performance testing mechanism for wire harness production and the testing method thereof, the stretching and bending performance testing mechanism comprises a testing table, and a supporting frame is fixedly installed at the top of the testing table. According to the invention, the displacement mechanism is driven to move by cooperating with the first driving device, so that one group of fixing mechanisms can flexibly move to adjust the supporting distance with the initial fixing end of the existing wire harness, and the lifting device is matched with the bending test device to be connected to provide driving force for the bending test device; the second driving device is connected and matched with the tensile testing device, so that the two groups of testing devices are both connected to the testing table, tensile testing and bending testing are integrated, tensile testing and bending testing operations are provided for the wire harness in different directions, and the wire harness is relatively flexible and convenient to fix; the supporting distance and the supporting tension can be adjusted according to the specification of the wire harness.

Description

Technical Field

[0001] This invention relates to the field of wire harness tensile and bending performance testing, specifically to a tensile and bending performance testing mechanism and method for wire harness production. Background Technology

[0002] A wire harness is a system of service equipment that provides services to a certain group of load sources, such as trunk lines, switching devices, and control systems. Based on its structure, it can be divided into full-utilization wire harnesses, partial-utilization wire harnesses, and link systems; based on its service mode, it can be divided into loss-based wire harnesses and waiting-based wire harnesses; and based on the number of load sources it serves, it can be divided into unlimited load source wire harnesses and finite load source wire harnesses. The quality of the wire harness material directly affects the overall quality of the wire harness, and the selection of wire harness material is related to the quality and service life of the wire harness.

[0003] A search revealed an existing patent (publication number: CN113155596B) that discloses a tensile and bending performance testing mechanism and method for wire harness production, belonging to the technical field of wire harness tensile and bending performance testing. The mechanism includes a testing platform with a tensile testing component and a bending testing device. By concentrating the tensile testing component and bending testing device on the same testing platform, and cooperating with an electrically driven reciprocating block, operators can quickly complete the testing of the wire harness's tensile and bending resistance. The operation is simple and convenient, saving manpower and resources, and increasing work efficiency. While this patented technology allows operators to quickly test the tensile and bending resistance of wire harnesses, it suffers from poor wire harness fixation and difficulty in adjusting the distance between the initial end and the testing component according to the wire harness specifications. This results in insufficient supporting tension in the wire harness, potentially leading to inconvenience during material change testing and ultimately low testing efficiency. Therefore, those skilled in the art have provided a tensile and bending performance testing mechanism and method for wire harness production to address the problems mentioned in the background. Summary of the Invention

[0004] 1. Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a tensile and bending performance testing mechanism and method for wire harness production. It solves the problems of poor ease of fixing of wire harnesses and difficulty in adjusting the distance between the initial end and the testing component according to the specifications of the wire harness, which may lead to inconvenience in the wire harness material change testing process and thus low actual testing efficiency.

[0005] 2. Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A tensile and bending performance testing mechanism for wire harness production includes a testing platform. A support frame is fixedly installed on the top of the testing platform. A lifting device is provided on the top of the support frame. Both ends of the lifting device are slidably connected to the inner wall of the support frame. A bending testing device is sleeved on the output end of the lifting device. A wire positioning groove is formed on the top of the testing platform. A first driving device is provided at the bottom of the testing platform. A displacement mechanism is engaged on one side of the first driving device. The displacement mechanism is slidably connected to the inner wall of the wire positioning groove. Fixing mechanisms are provided on both the displacement mechanism and the top of the testing platform. A second driving device is provided at the bottom of the testing platform. A tensile testing device is rotatably connected to the output end of the second driving device. A wire fixing mechanism is sleeved on one end of the tensile testing device.

[0006] Through the above technical solution, by setting a fixing mechanism on the displacement mechanism, after one end of the wire harness is fixed to the wire fixing mechanism through the fixing mechanism near the tensile testing device, the displacement mechanism is driven to move in conjunction with the first driving device, so that one set of fixing mechanisms can move flexibly to adjust the support distance with the initial fixed end of the wire harness. It also works in conjunction with the lifting device and the bending testing device to provide driving force. The second driving device is connected to the tensile testing device so that both sets of testing devices are connected to the testing platform, so that tensile and bending tests are integrated into one, and tensile and bending tests are provided for the wire harness in different directions. Moreover, the fixing of the wire harness is more flexible and convenient, and the support spacing and support tension can be adjusted according to the wire harness specifications.

[0007] Furthermore, the lifting device includes a lifting cylinder, the output end of the lifting cylinder is provided with a telescopic rod, the bottom of the telescopic rod is fixedly installed with a lifting plate, the bottom of the lifting plate is fixedly connected with a connecting sleeve plate, and both ends of the lifting plate are slidably connected to the inner wall of the support frame. The above technical solution involves activating a lifting cylinder to drive a telescopic rod to extend and retract, thereby pushing a lifting plate to slide downwards along the inner wall of the support frame. This, in turn, pushes the bending test device connected by a connecting sleeve plate to move closer to the center of the wire harness, thus providing driving force for the bending test.

[0008] Furthermore, the bending test device includes a bending test tension gauge, a hook is sleeved at the bottom of the bending test tension gauge, a hanging sleeve is fixedly installed at the top of the bending test tension gauge, and a rod is inserted into the inside of the hanging sleeve, the rod passing through the hanging sleeve and extending into the inside of the connecting sleeve plate; The above technical solution connects the hanging sleeve and the connecting sleeve plate. When the lifting cylinder is activated to extend and retract the telescopic rod, it works in conjunction with the lifting plate to drive the bending test tensile gauge to move downward. After the hook catches the wire harness, the lifting cylinder is activated again to drive the telescopic rod to extend and retract in the opposite direction, thereby driving the lifting plate and the bending test tensile gauge to move upward, so as to generate tension on the wire harness and perform bending performance testing. The operation is simple and efficient, saving manpower and material resources.

[0009] Furthermore, the first driving device includes a first driving motor, and a first gear is fixedly mounted on the output end of the first driving motor, the first gear meshing with the bottom of the displacement mechanism; The above technical solution involves starting the first drive motor to drive the first gear to rotate, thereby driving the displacement mechanism to move along the inner wall of the line slot, thus providing displacement driving force for the displacement mechanism.

[0010] Furthermore, the displacement mechanism includes a displacement rack, and slide bars are welded to both sides of the displacement rack. The slide bars are slidably connected to the inner wall of the line groove, and the first gear meshes with the bottom of the displacement rack. With the above technical solution, when the first drive motor drives the first gear to rotate, it drives the displacement rack to move, and the slide bar slides along the inner wall of the limiting groove to drive the top fixing mechanism to move. In this way, after the fixing mechanism fixes the end of the wire harness, it can move the fixing mechanism to flexibly adjust the support distance according to the length specification of the wire harness, so as to provide a certain support tension during the test to avoid affecting the accuracy of the test results.

[0011] Furthermore, the fixing mechanism includes a fixed base, an adjusting screw is rotatably connected to the top of the fixed base, a top pressure plate is threadedly connected to the outer surface of the adjusting screw, and pressure grooves are provided on the inner walls of both the fixed base and the top pressure plate. Two sets of fixed bases are provided, and one set of the two sets of fixed bases is inserted into the top of the displacement rack. With the above technical solution, after the end of the wire harness is pulled into the fixed base, the adjusting screw is turned to drive the top pressure plate to move downward until the pressure groove on the top pressure plate is close to the wire harness and then stops, so that the top pressure plate and the fixed base cooperate to fix the end of the wire harness. When the displacement rack moves, it drives the fixed base to move until the wire harness fixed inside the fixed base is straightened and then stops, so as to form a certain supporting tension on the wire harness.

[0012] Furthermore, the second driving device includes a second driving motor, a turntable is fixedly mounted on the top of the second driving motor, a connecting rod is rotatably connected to the top of the turntable, and one end of the connecting rod is rotatably connected to the tensile testing device. The tensile testing device includes a tensile testing force gauge, one end of which is fitted with a second hook, and a bottom slider is fixedly installed at the bottom of the tensile testing force gauge. The bottom slider is slidably connected to the inside of the test platform. The wire fixing mechanism includes a wire fixing seat, and a wire fixing rod is rotatably connected to the top of the wire fixing seat. A wire threading hole is opened inside the wire fixing rod, and the second hook is fitted inside the wire threading hole. With the above technical solution, after the wire harness passes through the inner side of the fixed base near the tensile tester, the top pressure plate moves down to clamp but not completely fix it. After the end of the wire harness passes through the wire hole, the wire fixing rod is rotated to wrap the end of the wire harness around several times, thus fixing the end of the wire harness. By starting the second drive motor, the turntable is driven to rotate, which drives the connecting rod to swing and drive the tensile tester to make linear reciprocating motion above the test platform, and also drives the wire fixing base to make reciprocating motion. During the reciprocating motion, the tensile tester drives the wire fixing rod to move in the opposite direction to generate longitudinal tension on the wire harness. This combination enables the wire harness to quickly complete the tensile test process, which is convenient to operate and improves the testing efficiency.

[0013] A method for testing the tensile and bending properties during the production and inspection of a wire harness includes the following steps: S1: Pass the initial end of the wire harness to be tested through the fixed base near the turntable, drive the top pressure plate to move down and cooperate with the wire pressing groove to press the wire harness into the interior. Pass the end of the wire harness through the inside of the wire fixing rod, rotate the wire fixing rod to make it wrap the end of the wire harness several times and then fix it. Pull the end of the wire harness to the inside of another set of fixed bases at the top of the displacement rack and cooperate with the top pressure plate to press the wire harness into the interior and fix it.

[0014] S2: Start the first drive motor to drive the first gear to rotate, which in turn drives the displacement rack to move and moves the fixed base together until the wire harness is straightened and has a certain supporting tension, then stop.

[0015] S3: The second drive motor drives the turntable to rotate, causing the connecting rod to make circular motion, which in turn causes the tensile test force gauge and the fixed rod to make linear reciprocating motion to perform tensile testing on the wire harness.

[0016] S4: Start the lifting cylinder to drive the telescopic rod to extend and retract, pushing the lifting plate down until the hook at the bottom of the bending test tensile gauge catches the wire harness and stops.

[0017] S5: Restart the lifting cylinder to drive the telescopic rod to extend and retract in the opposite direction, causing the lifting plate to move up and pulling the bending test force gauge up. The hook continues to move upward to generate bending force to test the bending performance of the wire harness.

[0018] S6: After the test is completed, rotate the wire rod in the opposite direction to move the end of the wire harness out of the wire hole, and rotate the two sets of adjusting screws in the opposite direction to move the top pressure plate up to release the restriction on the initial end and the end of the wire harness, and take out the wire harness to complete the test process.

[0019] 3. Beneficial effects This invention provides a tensile and bending performance testing mechanism and method for wire harness production. It has the following beneficial effects: 1. This invention provides a tensile and bending performance testing mechanism and method for wire harness production. By setting a fixing mechanism on a displacement mechanism, after one end of the wire harness is fixed to the wire fixing mechanism via the fixing mechanism near the tensile testing device, a first driving device drives the displacement mechanism to move, allowing one set of fixing mechanisms to flexibly move to adjust the support distance from the initial fixed end of the wire harness. A lifting device is connected to the bending testing device to provide driving force. A second driving device is connected to the tensile testing device, so that both sets of testing devices are connected to the testing platform, integrating tensile and bending tests into one unit. This provides tensile and bending tests for the wire harness in different directions, and the fixing of the wire harness is flexible and convenient, allowing adjustment of the support spacing and tension according to the wire harness specifications.

[0020] 2. This invention provides a tensile and bending performance testing mechanism and method for wire harness production. It connects to a connecting plate via a hanging sleeve. When the lifting cylinder is activated to extend or retract the telescopic rod, it works in conjunction with the lifting plate to move the bending test tensile gauge downwards. Once the hook catches the wire harness, the lifting cylinder is activated again to drive the telescopic rod to extend or retract in the opposite direction, causing the lifting plate and the bending test tensile gauge to move upwards, thus generating tension on the wire harness for bending performance testing. The operation is simple and saves manpower and resources.

[0021] 3. This invention provides a tensile and bending performance testing mechanism and method for wire harness production. By starting a second drive motor to drive a turntable to rotate, the connecting rod will swing and drive the tensile test force gauge to perform linear reciprocating motion above the test platform, and drive the wire fixing seat to perform reciprocating motion. During the reciprocating motion, the tensile test force gauge drives the wire fixing rod to move in the opposite direction to generate longitudinal tension on the wire harness. This combination enables the wire harness to quickly complete the tensile test process, which is convenient to operate and improves the testing efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the bottom structure of the test platform of the present invention; Figure 3 This is a schematic diagram of the bending test tensile gauge structure of the present invention; Figure 4 This is a schematic diagram of the structure of the turntable of the present invention; Figure 5 This is a partial cross-sectional structural diagram of the test platform of the present invention; Figure 6 This is a schematic diagram of the displacement rack structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle.

[0023] The components include: 1. Test bench; 2. Support frame; 3. Lifting device; 4. Bending test device; 5. Wire groove; 6. First drive device; 7. Displacement mechanism; 8. Fixing mechanism; 9. Second drive device; 10. Tensile test device; 11. Wire fixing mechanism; 301. Lifting cylinder; 302. Telescopic rod; 303. Lifting plate; 304. Connecting sleeve; 401. Bending test tensile gauge; 402. Hook; 403. Hanging sleeve; 404. Insert rod. 601. First drive motor; 602. First gear; 701. Displacement rack; 702. Slide bar; 801. Fixed base; 802. Adjusting screw; 803. Top pressure plate; 804. Wire pressing groove; 901. Second drive motor; 902. Turntable; 903. Connecting rod; 1011. Tensile test force gauge; 1012. Second pull hook; 1013. Bottom slider; 1101. Wire fixing seat; 1102. Wire fixing rod; 1103. Wire hole. Detailed Implementation

[0024] The technical solutions of the specific embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Specific implementation method 1: like Figure 1 , Figure 2 and Figure 4As shown, a specific embodiment of the present invention provides a tensile and bending performance testing mechanism for wire harness production, including a test platform 1, a support frame 2 fixedly installed on the top of the test platform 1, a lifting device 3 provided on the top of the support frame 2, both ends of the lifting device 3 being slidably connected to the inner wall of the support frame 2, a bending test device 4 sleeved on the output end of the lifting device 3, a wire positioning groove 5 opened on the top of the test platform 1, a first driving device 6 provided on the bottom of the test platform 1, a displacement mechanism 7 engaged on one side of the first driving device 6, the displacement mechanism 7 being slidably connected to the inner wall of the wire positioning groove 5, a fixing mechanism 8 provided on both the displacement mechanism 7 and the top of the test platform 1, a second driving device 9 provided on the bottom of the test platform 1, a tensile test device 10 rotatably connected to the output end of the second driving device 9, and a wire fixing mechanism 11 sleeved on one end of the tensile test device 10.

[0026] This embodiment describes a tensile and bending performance testing mechanism for wire harness production. It should be noted that by setting a fixing mechanism 8 on the displacement mechanism 7, after one end of the wire harness is fixed to the wire fixing mechanism 11 via the fixing mechanism 8 near the tensile testing device 10, the displacement mechanism 7 is driven by the first driving device 6 to move, allowing one set of fixing mechanisms 8 to flexibly move to adjust the support distance from the initial fixed end of the wire harness. The lifting device 3 is connected to the bending testing device 4 to provide driving force. The second driving device 9 is connected to the tensile testing device 10, so that both testing devices are connected to the testing platform 1, integrating tensile and bending tests into one unit. This provides tensile and bending tests for the wire harness in different directions, and the fixing of the wire harness is relatively flexible and convenient, allowing adjustment of the support spacing and tension according to the wire harness specifications.

[0027] Working principle: The end of the wire harness is pulled to the inside of the fixing mechanism 8 on the test platform 1, so that the end of the wire harness passes through the inside of the wire fixing mechanism 11. By rotating the wire fixing mechanism 11, the end of the wire harness is wrapped and fixed. The fixing mechanism 8 clamps the position close to the end of the wire harness. The first drive device 6 is started so that its drive displacement mechanism 7 drives the top fixing mechanism 8 to move longitudinally along the wire position groove 5 to fix the end of the wire harness until it is straightened and then stops. The second drive device 9 is started so that the tensile testing device 10 moves in a linear reciprocating motion and drives the wire fixing mechanism 11 to move in the opposite direction to perform a longitudinal tensile test on the wire harness. After the tensile test is completed, the lifting device 3 is started so that the bending testing device 4 moves down to hook the middle section of the wire harness. The lifting device 3 then drives the bending testing device 4 to move up in the opposite direction to form a bending force on the wire harness to perform a bending performance test. Specific implementation method 1: like Figure 3 , Figure 5 and Figure 6As shown, a specific embodiment of the present invention provides a tensile and bending performance testing mechanism for wire harness production. The lifting device 3 includes a lifting cylinder 301, with a telescopic rod 302 at the output end of the lifting cylinder 301. A lifting plate 303 is fixedly installed at the bottom of the telescopic rod 302, and a connecting sleeve 304 is fixedly connected to the bottom of the lifting plate 303. Both ends of the lifting plate 303 are slidably connected to the inner wall of the support frame 2. The bending testing device 4 includes a bending test tension gauge 401, with a hook 402 sleeved at the bottom of the bending test tension gauge 401 and a hanging sleeve 403 fixedly installed at the top. A [missing information - likely a device name or component] is inserted into the inside of the hanging sleeve 403. Insert rod 404 passes through hanging sleeve 403 and extends into the interior of connecting sleeve plate 304. The second drive device 9 includes a second drive motor 901. A turntable 902 is fixedly installed on the top of the second drive motor 901. A connecting rod 903 is rotatably connected to the top of the turntable 902. One end of the connecting rod 903 is rotatably connected to the tensile testing device 10. The tensile testing device 10 includes a tensile testing force gauge 1011. A second pull hook 1012 is sleeved on one end of the tensile testing force gauge 1011. A bottom slider 1013 is fixedly installed on the bottom of the tensile testing force gauge 1011. The bottom slider 1013 is slidably connected to the interior of the test platform 1.

[0029] This embodiment provides a tensile and bending performance testing mechanism for wire harness production. The second drive motor 901, in conjunction with the turntable 902, drives the connecting rod 903 to rotate, thereby providing longitudinal displacement driving force to the tensile test force gauge 1011. This allows the tensile test force gauge 1011 to work with the wire fixing rod 1102 to provide a rapid tensile test effect for the wire harness. The lifting cylinder 301 drives the telescopic rod 302 to extend and retract, cooperating with the lifting plate 303 to slide, providing vertical displacement driving force to the bending test force gauge 401. This simplifies the bending test operation and enables the bending test force gauge 401 to efficiently test the bending performance of the wire harness.

[0030] Working principle: By starting the second drive motor 901, the turntable 902 is rotated, which drives the connecting rod 903 to swing, causing the tensile test force gauge 1011 to move linearly back and forth above the test platform 1, and also causing the wire fixing seat 1101 to move back and forth. During the reciprocating motion, the tensile test force gauge 1011 drives the wire fixing rod 1102 to move in the opposite direction to generate longitudinal tension on the wire harness. This allows the tensile test process of the wire harness to be completed quickly. After the tensile test is completed, the hanging sleeve 403 is connected to the connecting sleeve plate 304. When the lifting cylinder 301 is started to extend and retract the telescopic rod 302, it works with the lifting plate 303 to drive the bending test force gauge 401 to move downward. When the hook 402 hooks the wire harness, the lifting cylinder 301 is started again to drive the telescopic rod 302 to extend and retract in the opposite direction, which drives the lifting plate 303 and the bending test force gauge 401 to move upward to generate vertical tension on the wire harness, causing the wire harness to bend, thus completing the bending test process. Specific implementation method 1: like Figure 5 and Figure 6 As shown, a specific embodiment of the present invention provides a tensile and bending performance testing mechanism for wire harness production. The displacement mechanism 7 includes a displacement rack 701, with slide bars 702 welded to both sides of the displacement rack 701. The slide bars 702 are slidably connected to the inner wall of the wire positioning groove 5. A first gear 602 meshes with the bottom of the displacement rack 701. The fixing mechanism 8 includes a fixing base 801, with an adjusting screw 802 rotatably connected to the top of the fixing base 801. The outer surface of the adjusting screw 802 is threaded with... The top pressure plate 803 is connected, and the inner walls of the fixed base 801 and the top pressure plate 803 are provided with wire pressing grooves 804. There are two sets of fixed bases 801. One set of fixed bases 801 is inserted into the top of the displacement rack 701. The wire fixing mechanism 11 includes a wire fixing seat 1101. The top of the wire fixing seat 1101 is rotatably connected to a wire fixing rod 1102. The wire fixing rod 1102 has a wire through hole 1103 inside. The second hook 1012 is sleeved inside the wire through hole 1103.

[0032] In this embodiment, a tensile and bending performance testing mechanism for wire harness production is described. It should be noted that the first gear 602 meshes with the displacement rack 701, providing a displacement driving force to the rack 701. This allows the rack 701 to provide a displacement driving force to the fixed base 801. When the end of the wire harness is fixed to the wire rod 1102, the displacement of the rack 701 drives the fixed base 801 and the end of the wire harness to move, thus providing initial and final fixing effects for the wire harness. Furthermore, the support distance from the initial end can be adjusted according to the wire harness length specifications to provide corresponding support tension for the total length of the wire harness.

[0033] Working principle: The end of the wire harness is passed through the wire hole 1103 inside the wire fixing rod 1102. By rotating the wire fixing rod 1102, the end of the wire harness is wound up several times and then stopped, so that the wire harness is completely straightened. The end of the wire harness is pulled into the fixed base 801 above the displacement rack 701. By rotating the adjusting screw 802, the top pressure plate 803 is driven to move down and cooperate with the wire pressing groove 804 to press and fix the wire harness. The displacement rack 701 is driven by the first gear 602 to slide and move, so that the fixed base 801 at the top moves along the wire positioning groove 5 until the wire harness is completely pulled out and in a horizontal state, so that the wire harness has a certain supporting tension.

[0034] A method for testing the tensile and bending properties during the production and inspection of a wire harness includes the following steps: S1: Pass the initial end of the wire harness to be tested through the fixed base 801 near the turntable 902. Drive the top pressure plate 803 to move down and cooperate with the wire pressing groove 804 to press the wire harness into the interior. The end of the wire harness passes through the inside of the wire fixing rod 1102. Rotate the wire fixing rod 1102 to make it wrap the end of the wire harness several times and then fix it. Pull the end of the wire harness to the inside of another set of fixed bases 801 at the top of the displacement rack 701 and cooperate with the top pressure plate 803 to press the wire harness into the interior and fix it.

[0035] S2: Start the first drive motor 601 to drive the first gear 602 to rotate, thereby moving the displacement rack 701 and the fixed base 801 together until the wire harness is straightened and has a certain supporting tension, then stop.

[0036] S3: The second drive motor 901 drives the turntable 902 to rotate, which in turn drives the connecting rod 903 to make circular motion, thereby driving the tensile test force gauge 1011 and the fixed rod 1102 to make linear reciprocating motion, and performing tensile testing on the wire harness.

[0037] S4: Start the lifting cylinder 301 to drive the telescopic rod 302 to extend and retract, pushing the lifting plate 303 down until the hook at the bottom of the bending test tension gauge 401 catches the wire harness and stops.

[0038] S5: Restart the lifting cylinder 301 to drive the telescopic rod 302 to extend and retract in the opposite direction, causing the lifting plate 303 to move upward and pulling the bending test force gauge 401 upward. The hook 402 continues to move upward to generate bending force to test the bending performance of the wire harness.

[0039] S6: After the test is completed, rotate the wire fixing rod 1102 in the opposite direction to move the end of the wire harness out of the wire hole 1103, and rotate the two sets of adjusting screws 802 in the opposite direction to move the top pressure plate 803 upward to release the restriction on the initial end and the end of the wire harness, and take out the wire harness to complete the test process.

[0040] Although specific embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these specific embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensile and bending performance testing mechanism for wire harness production, comprising a testing table (1), characterized in that: A support frame (2) is fixedly installed on the top of the test bench (1). A lifting device (3) is provided on the top of the support frame (2). Both ends of the lifting device (3) are slidably connected to the inner wall of the support frame (2). A bending test device (4) is sleeved on the output end of the lifting device (3). A wire position groove (5) is opened on the top of the test bench (1). A first driving device (6) is provided on the bottom of the test bench (1). A displacement mechanism (7) is engaged on one side of the first driving device (6). The displacement mechanism (7) is slidably connected to the inner wall of the wire position groove (5). A fixing mechanism (8) is provided on the top of the displacement mechanism (7) and the test bench (1). A second driving device (9) is provided on the bottom of the test bench (1). A tensile test device (10) is rotatably connected to the output end of the second driving device (9). A wire fixing mechanism (11) is sleeved on one end of the tensile test device (10).

2. The tensile and bending performance testing mechanism for wire harness production according to claim 1, characterized in that: The lifting device (3) includes a lifting cylinder (301), the output end of the lifting cylinder (301) is provided with a telescopic rod (302), the bottom of the telescopic rod (302) is fixedly installed with a lifting plate (303), the bottom of the lifting plate (303) is fixedly connected with a connecting sleeve plate (304), and the two ends of the lifting plate (303) are slidably connected to the inner wall of the support frame (2).

3. The tensile and bending performance testing mechanism for wire harness production according to claim 2, characterized in that: The bending test device (4) includes a bending test tension gauge (401), with a hook (402) sleeved at the bottom of the bending test tension gauge (401) and a hanging sleeve (403) fixedly installed at the top of the bending test tension gauge (401). A rod (404) is inserted into the inside of the hanging sleeve (403), and the rod (404) passes through the hanging sleeve (403) and extends into the inside of the connecting sleeve plate (304).

4. The tensile and bending performance testing mechanism for wire harness production according to claim 1, characterized in that: The first driving device (6) includes a first driving motor (601), and a first gear (602) is fixedly installed at the output end of the first driving motor (601). The first gear (602) meshes with the bottom of the displacement mechanism (7).

5. The tensile and bending performance testing mechanism for wire harness production according to claim 4, characterized in that: The displacement mechanism (7) includes a displacement rack (701), and slide bars (702) are welded to both sides of the displacement rack (701). The slide bars (702) are slidably connected to the inner wall of the line position groove (5), and the first gear (602) meshes with the bottom of the displacement rack (701).

6. The tensile and bending performance testing mechanism for wire harness production according to claim 5, characterized in that: The fixing mechanism (8) includes a fixed base (801), an adjusting screw (802) is rotatably connected to the top of the fixed base (801), a top pressure plate (803) is threadedly connected to the outer surface of the adjusting screw (802), and a pressure groove (804) is provided on the inner wall of both the fixed base (801) and the top pressure plate (803). There are two sets of fixed bases (801), and one set of the two sets of fixed bases (801) is inserted into the top of the displacement rack (701).

7. The tensile and bending performance testing mechanism for wire harness production according to claim 1, characterized in that: The second driving device (9) includes a second driving motor (901), a turntable (902) is fixedly mounted on the top of the second driving motor (901), a connecting rod (903) is rotatably connected to the top of the turntable (902), one end of the connecting rod (903) is rotatably connected to the tensile testing device (10), the tensile testing device (10) includes a tensile testing force gauge (1011), one end of the tensile testing force gauge (1011) is sleeved with a second pull hook (1012). The bottom of the tensile test dynamometer (1011) is fixedly installed with a bottom slider (1013), which is slidably connected to the inside of the test platform (1). The wire fixing mechanism (11) includes a wire fixing seat (1101), and a wire fixing rod (1102) is rotatably connected to the top of the wire fixing seat (1101). A wire threading hole (1103) is opened inside the wire fixing rod (1102), and the second hook (1012) is sleeved inside the wire threading hole (1103).

8. A test method applied to the tensile and bending performance testing mechanism for wire harness production as described in any one of claims 1-7, characterized in that, Includes the following steps: S1: Pass the initial end of the wire harness to be tested through the fixed base (801) near the turntable (902), drive the top pressure plate (803) to move down and cooperate with the wire pressing groove (804) to press the wire harness into the interior. The end of the wire harness passes through the inside of the wire fixing rod (1102). Rotate the wire fixing rod (1102) to make it wrap the end of the wire harness several times and then fix it. Pull the end of the wire harness to the inside of another set of fixed bases (801) at the top of the displacement rack (701) and cooperate with the top pressure plate (803) to press the wire harness into the interior and fix it. S2: Start the first drive motor (601) to drive the first gear (602) to rotate, thereby moving the displacement rack (701) and the fixed base (801) together until the wire harness is straightened and has a certain supporting tension, then stop. S3: The second drive motor (901) drives the turntable (902) to rotate and drive the connecting rod (903) to make circular motion so as to drive the tensile test force gauge (1011) and the fixed rod (1102) to make linear reciprocating motion to perform tensile testing on the wire harness; S4: Start the lifting cylinder (301) to drive the telescopic rod (302) to extend and push the lifting plate (303) down until the hook at the bottom of the bending test tension gauge (401) below catches the wire harness and stops; S5: Restart the lifting cylinder (301) to drive the telescopic rod (302) to extend and retract in the opposite direction, causing the lifting plate (303) to move upward and pull the bending test force gauge (401) upward. The hook 402 continues to move upward to generate bending force to test the bending performance of the wire harness. S6: After the test is completed, rotate the wire rod (1102) in the opposite direction to move the end of the wire harness out of the wire hole 1103, and rotate the two sets of adjusting screws (802) in the opposite direction to move the top pressure plate (803) upward to release the restriction on the initial end and the end of the wire harness, and take out the wire harness to complete the test process.

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