A connector terminal quick detection device

Abstract

The application is suitable for the technical field of connector terminal detection, and provides a connector terminal rapid detection device, which comprises a base, a support frame fixedly installed on the base, a group of transmission chain wheels rotatably installed on the support frame and used for conveying terminal bodies, a transmission chain sleeved on the group of transmission chain wheels, a fixing frame arranged on the transmission chain, and a placing box installed on the fixing frame and used for placing the terminal bodies. The connector terminal rapid detection device is designed in an integrated annular assembly line, seamlessly connects multiple processes such as manual feeding, automatic positioning, multi-cable mislocation isolation, firmness detection, automatic buckle separation, product automatic unloading and collection, and greatly shortens the detection period of a single product through multi-station parallel and mechanical linkage, so that the overall work efficiency is improved in quality, and the high requirements of modern large-scale production on detection efficiency, consistency and reliability can be met.

Description

Technical Field

[0001] This invention belongs to the field of connector terminal testing technology, and particularly relates to a rapid testing device for connector terminals. Background Technology

[0002] In the actual production process of connector terminals, quality problems are inevitable due to various factors such as production technology, raw material quality, and equipment precision. Loose connector terminal connections are a common issue. If the connection between the terminal and the connector housing is not secure, loosening or detachment can easily occur during use, leading to signal interruption and severely affecting the normal operation of the equipment. To ensure the secure connection of connector terminals, wire harness pull-back testing is a common method. However, existing wire harness pull-back testing methods have significant limitations in practical applications. During testing, due to the inherent resilience and non-straightness of the wire harness, it needs to be straightened and stretched before testing. Currently, counterweight clamps are commonly used to hold the wire harness in place, relying on their weight to straighten it. However, after testing, the clamps must be manually removed, which is complex and requires additional time and effort from operators, increasing labor intensity. Moreover, each test requires tedious wire harness fixing and clamp disassembly operations, making the entire process time-consuming and inefficient, failing to meet the requirements of efficient testing in modern large-scale production. Summary of the Invention

[0003] This invention provides a rapid testing device for connector terminals, aiming to solve the problems of complex operation and low efficiency of existing wire harness pullback testing methods mentioned in the background art.

[0004] To solve the above problems, the present invention provides a rapid testing device for connector terminals, comprising: a base and a support frame fixedly mounted on the base; a set of transmission sprockets rotatably mounted on the support frame for conveying terminal bodies, wherein a transmission chain is sleeved on the set of transmission sprockets; a fixing frame disposed on the transmission chain; a placement box mounted on the fixing frame for placing the terminal bodies; a staggered strip-shaped buckle snapping onto the wire harness of the terminal bodies, wherein a pull ring is installed on the staggered strip-shaped buckle; and a servo motor fixedly mounted on the top of the support frame for driving the transmission sprockets to rotate, wherein the coupling of the servo motor... The output shaft of the device is fixedly connected to the drive sprocket shaft; a wire harness pull-back detection mechanism is provided on the base for detecting the connection firmness of the terminal body; a separation mechanism is provided on the right side of the wire harness pull-back mechanism for automatically separating the misaligned strip buckle and the wire harness, the separation mechanism including: a fixed plate fixedly installed on the base; a first cylinder hinged on the fixed plate for pulling the misaligned strip buckle and disengaging it from the wire harness; a thumb cylinder installed on the first cylinder for clamping the pull ring, a set of clamping plates is installed on the thumb cylinder; and a second cylinder hinged to the fixed plate and the first cylinder sleeve respectively for adjusting the angle of the clamping plates.

[0005] Preferably, the support frame is equipped with a photoelectric detection device for monitoring the terminal body, and a baffle plate for preventing the terminal body from falling is hinged to the outside of the placement box. Both the baffle plate and the placement box are equipped with locking strips, and the two locking strips are engaged with each other. A wire baffle plate for limiting the wire harness is fixedly installed on one side of the fixing plate, and the wire baffle plate is located above the thumb cylinder.

[0006] Preferably, the base is provided with a set of connecting plates, and each of the connecting plates is fixedly installed with a limiting plate for limiting the movement of the terminal body wire harness. The limiting plate located on the outer side is provided with a plurality of limiting blocks for misaligning and isolating adjacent wire harnesses. The limiting blocks act on multiple wire harnesses at intervals.

[0007] Preferably, the wire harness pullback detection mechanism includes: an L-shaped plate disposed on one side of the connecting plate; a first U-shaped plate fixedly mounted on the L-shaped plate, on which a first bidirectional screw is rotatably mounted; a first slider threaded onto the first bidirectional screw; an electric telescopic rod fixedly mounted on one side of the first slider; an arc-shaped clamping block disposed on the electric telescopic rod for clamping a single wire harness; a tension sensor mounted on the electric telescopic rod and the arc-shaped clamping block for monitoring the tension of the arc-shaped clamping block; and a first motor fixedly mounted on one side of the first U-shaped plate, wherein the output shaft of the coupling of the first motor is fixedly connected to the first bidirectional screw.

[0008] Preferably, a support plate is fixedly installed on the top of the first slider, a guide groove is provided on one side of the support plate, a guide rod is fixedly installed in the guide groove, and a guide block for guiding the arc-shaped clamp block to move up and down is slidably sleeved on the guide rod, and the guide block is fixedly connected to the arc-shaped clamp block.

[0009] Preferably, a connecting plate is fixedly installed on one side of the connecting plate, a clamping plate is inserted into the connecting plate, the clamping plate is fixedly connected to the L-shaped plate, and a fastening bolt is installed on the connecting piece at the bottom of the connecting plate. The fastening bolt is threadedly connected to the clamping plate to fix the clamping plate.

[0010] Preferably, a fixing mechanism for clamping and fixing the terminal body is provided on one side of the connecting plate. The fixing mechanism is located above the wire harness pullback detection mechanism. The fixing mechanism includes: a second U-shaped plate fixedly installed on one side of the connecting plate; a second bidirectional screw rotatably sleeved on the second U-shaped plate, and a set of second sliders threaded on the second bidirectional screw; connecting clamps respectively provided on the set of second sliders for clamping the terminal body shell; force sensors installed on the second sliders and connecting clamps for monitoring the clamping force of the connecting clamps; and a second motor fixedly installed on the second U-shaped plate for driving the second bidirectional screw to rotate, wherein the output shaft of the coupling of the second motor is fixedly connected to the second bidirectional screw.

[0011] Preferably, a connecting frame is installed on the transmission chain, the connecting frame is detachably connected to the fixed frame, and an annular guide rail for guiding the movement of the connecting frame is fixedly installed on the inner top of the support frame. A spherical guide rod is movably installed in the annular guide rail and is fixedly connected to the connecting frame.

[0012] Preferably, the base is provided with a spacing adjustment mechanism for adjusting the spacing of a set of wire harness pullback detection mechanisms. The spacing adjustment mechanism includes: a connecting plate fixedly installed on the top of the base; a third bidirectional screw rotatably installed on the connecting plate, with a set of third sliders threaded onto the third bidirectional screw; an arc-shaped baffle fixedly installed on the connecting plate for protecting the third bidirectional screw, the arc-shaped baffle being slidably connected to the set of third sliders; and a dual-head motor fixedly installed on the top of the base for driving the third bidirectional screw to rotate, the output shaft of the coupling of the dual-head motor being fixedly connected to the third bidirectional screw.

[0013] Preferably, the inner side of the placement box is provided with a push block for automatically feeding the terminal body. A connecting rod is fixedly installed on one side of the push block. A connecting spring for resetting the push block is sleeved on the connecting rod. The two ends of the connecting spring are fixedly connected to the placement box and the connecting rod baffle, respectively. A push plate for pushing the connecting rod and the push block is provided on one side of the fixing plate.

[0014] Compared with related technologies, the connector terminal rapid detection device provided by the present invention has the following advantages:

[0015] Compared with existing technologies, the connector terminal rapid testing device provided in this solution achieves full automation and streamlined operation of terminal testing by constructing a circular production line driven by servo motors and a multi-station collaborative operation system, improving the testing efficiency to the cycle time level required for industrial production. By integrating innovative wire harness spatial misalignment mechanism, automatic clamping and pull-back mechanism, and automatic buckle separation mechanism, it can ensure that each cable is tested in a taut and independently isolated state, thereby significantly improving the accuracy and consistency of the test results. In summary, the connector terminal rapid testing device of the present invention, through an integrated circular production line design, seamlessly connects multiple processes such as manual loading, automatic positioning, multi-cable misalignment isolation, firmness testing, automatic buckle separation, and automatic product unloading and collection. This replaces the tedious and high-intensity operations of traditional testing, such as manually straightening wire harnesses, manually loading and unloading counterweights, and repeatedly disassembling and assembling buckles. It not only significantly reduces the labor intensity of operators, but also greatly shortens the testing cycle of a single product through multi-station parallel operation and mechanical linkage, resulting in a qualitative improvement in overall work efficiency. It can well meet the high requirements of modern large-scale production for testing efficiency, consistency, and reliability. Attached Figure Description

[0016] Figure 1 This is a front view structural schematic diagram of a connector terminal rapid detection device provided by the present invention;

[0017] Figure 2 This is a side cross-sectional view of a connector terminal rapid detection device provided by the present invention;

[0018] Figure 3 This is a side sectional view of the separation mechanism and the pushing mechanism of the unloading station provided by the present invention.

[0019] Figure 4 This is a side-view cross-sectional structural diagram of the inspection station provided by the present invention during inspection;

[0020] Figure 5 This is a top cross-sectional view of the wire harness pull-back mechanism provided by the present invention;

[0021] Figure 6 This is a top sectional view of the fixing mechanism provided by the present invention;

[0022] Figure 7 This is an assembly drawing of the conveyor belt, connecting rod, and bevel gear provided by the present invention;

[0023] Figure 8This is an assembly drawing of the connecting gear, the third sprocket, and the third chain provided by the present invention;

[0024] Figure 9 for Figure 3 An enlarged structural diagram of part A shown in the figure;

[0025] Figure 10 for Figure 4 An enlarged structural diagram of part B shown in the figure;

[0026] Figure 11 for Figure 2 An enlarged structural diagram of section C shown in the figure;

[0027] Figure 12 for Figure 3 The diagram shows an enlarged view of part D.

[0028] Reference numerals: 1. Base; 2. Support frame; 3. Transmission sprocket; 4. Transmission chain; 5. Fixing frame; 6. Placement box; 7. Terminal body; 8. Offset strip buckle; 9. Fixing plate; 10. First cylinder; 11. Thumb cylinder; 12. Clamping plate; 13. Pull ring; 14. Servo motor; 15. Photoelectric detection equipment; 16. Connecting plate; 17. Limiting block; 18. Limiting plate; 19. L-shaped plate; 20. First U-shaped plate; 21. First bidirectional screw; 22. First slider; 23. Electric telescopic rod; 24. Arc-shaped clamping block; 25. Tension sensor; 26. Support plate; 27. Guide block; 28. First motor; 29. ​​Connecting plate; 30. Clamping plate; 31. Second U-shaped plate; 32. Second bidirectional screw; 33. Second slider; 34. Connecting clamping block; 35. 36. Force sensor; 37. Second motor; 38. Connecting frame; 39. Circular guide rail; 40. Spherical guide rod; 41. Third bidirectional screw; 42. Third slider; 43. Arc-shaped baffle; 44. Double-headed motor; 45. Push block; 46. Connecting rod; 47. Connecting spring; 48. Push plate; 49. Threaded rod; 50. Threaded cylinder; 51. Limiting rod; 52. Limiting block; 53. First sprocket; 54. First chain; 55. Mounting plate; 56. Conveyor belt; 57. Transmission rod; 58. Second sprocket; 59. Second chain; 60. Connecting rod; 61. Bevel gear; 62. Second cylinder; 63. U-shaped frame; 64. Round rod; 65. Electric gripper; 66. Partition plate; 67. Connecting gear; 68. Third sprocket; 69. Limiting wheel; 70. Third chain; 81. Line baffle plate. Detailed Implementation

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] This invention provides a rapid testing device for connector terminals, such as... Figure 1-12 As shown, the connector terminal rapid testing device includes: a base 1 and a support frame 2 fixedly mounted on the base 1; a set of transmission sprockets 3 rotatably mounted on the support frame 2 for conveying the terminal body 7, with a transmission chain 4 sleeved on the set of transmission sprockets 3; a fixing frame 5 disposed on the transmission chain 4; a placement box 6 mounted on the fixing frame 5 for placing the terminal body 7; a staggered strip buckle 8 snapped onto the wire harness of the terminal body 7, with a pull ring 13 installed on the staggered strip buckle 8; and a servo motor 14 fixedly mounted on the top of the support frame 2 for driving the transmission sprockets 3 to rotate, the coupling output shaft of the servo motor 14 being connected to the transmission chain. Wheel 3 is fixedly connected to the shaft; a wire harness pull-back detection mechanism is provided on the base 1 for detecting the connection firmness of the terminal body 7; a separation mechanism is provided on the right side of the wire harness pull-back mechanism for automatically separating the misaligned strip buckle 8 and the wire harness, the separation mechanism including: a fixed plate 9 fixedly installed on the base 1; a first cylinder 10 hinged to the fixed plate 9 for pulling the misaligned strip buckle 8 and disengaging it from the wire harness; a thumb cylinder 11 installed on the first cylinder 10 for clamping the pull ring 13, a set of clamping plates 12 are installed on the thumb cylinder 11; a second cylinder 61 hinged to the fixed plate 9 and the sleeve of the first cylinder 10 for adjusting the angle of the clamping plates 12.

[0032] In this embodiment, the base is equipped with multiple workstations with different functions, namely a terminal loading workstation, a detection workstation, and an automatic terminal unloading workstation. The three workstations are grouped together to form a production line.

[0033] Before testing, the operator places the terminal bodies 7 of multiple wire harnesses, which are already secured with staggered strip clips 8, into the placement box 6 and closes the baffle plate to fix them. Then, the servo motor 14 is started, and the motor drives the transmission sprocket 3 to rotate, which in turn drives the transmission chain 4 and its fixing frame 5 and placement box 6 to move along a circular path, transporting the terminals to the testing station. When the placement box 6 carrying the terminal bodies 7 arrives at the testing station, the servo motor 14 stops. Then, the terminal shell is clamped by the fixing mechanism. After that, the spacing adjustment mechanism drives the two sets of wire harness pull-back testing mechanisms to move horizontally relative to each other, so that the arc-shaped clamping block 24 is aligned with the wire harness. At the same time, the limiting block 17 cooperates with the staggered strip clips 8 on the wire harness to physically arrange the multiple wire harnesses in a staggered arrangement, ensuring that each wire harness is independently isolated. Then, the wire harness pull-back testing mechanism performs the testing operation.

[0034] After the test is completed, the spacing adjustment mechanism drives the wire harness pull-back test mechanism to reset, opening a channel for terminal transfer. Then, the servo motor 14 starts again, transporting the tested terminal to the unloading station, and simultaneously sending the next terminal to be tested into the test station, forming a continuous operation.

[0035] When the terminal reaches the unloading station, the separation mechanism starts to work. The first cylinder 10 extends, driving the thumb cylinder 11 and its clamping plate 12 forward to both sides of the pull ring 13 of the misaligned strip buckle 8. The thumb cylinder 11 drives the clamping plate 12 to clamp the pull ring 13. Then, the first cylinder 10 quickly retracts, and the misaligned strip buckle 8 is pulled off the wire harness by the instantaneous pulling force. At the same time, the pushing mechanism pushes the push block 44 in the placement box 6 to push out the terminal shell. The pushed-out terminal is caught by the electric gripper 64 of the unloading mechanism. Then the second cylinder 61 starts, driving the first cylinder 10 to rotate downward, so that the thumb cylinder 11 holding the misaligned strip buckle 8 is in an inclined state.

[0036] Then, through the synchronous transmission of the linkage mechanism, the electric gripper 64 is driven to rotate downwards synchronously. Then, the thumb cylinder 11 releases the clamping plate 12, causing the misaligned strip buckle 8 to fall onto the conveyor belt 55 below. At the same time, the electric gripper 64 releases, placing the terminal body 7 onto the conveyor belt 55 as well. The conveyor belt starts, transporting the tested terminal and the separated buckle together, completing a complete testing cycle. By constructing a circular production line driven by a servo motor and a multi-station collaborative operation system, the terminal testing process is fully automated and streamlined, improving the testing efficiency to the cycle time required for industrial production. Through the integration of innovative wire harness spatial misalignment mechanism, automatic clamping and pull-back mechanism, and automatic buckle separation mechanism, it can be ensured that each cable is tested in a taut and independently isolated state, thereby significantly improving the accuracy and consistency of the test results.

[0037] In a further preferred embodiment of the present invention, a photoelectric detection device 15 for monitoring the terminal body 7 is installed on the support frame 2, a baffle plate for preventing the terminal body 7 from falling is hinged to the outside of the placement box 6, and a locking strip is installed on both the baffle plate and the placement box 6, with the two locking strips engaging with each other. A wire-blocking plate 70 for limiting the wire harness is fixedly installed on one side of the fixing plate 9, and the wire-blocking plate 70 is located above the thumb cylinder 11.

[0038] In this embodiment, the photoelectric detection device 15 monitors the position of the placement box 6 and the terminal body 7 on the production line in real time. When the terminal is detected to have reached the preset detection station or unloading station, it sends a signal to the control system to control the servo motor 14 to start and stop, thereby achieving precise positioning. The baffle plate and its locking strip are fastened after manual loading to prevent the terminal from falling out of the placement box 6 due to vibration or inertia during the conveying process. In the separation process, the wire baffle plate 70 is located above the straightened wire harness. When the first cylinder 10 quickly pulls back the staggered strip buckle 8, the wire baffle plate 70 can limit the wire harness from rising or swinging excessively, ensuring that the pulling force is effectively applied to the connection between the buckle and the wire harness, thereby improving the separation success rate and protecting the wire harness.

[0039] In a further preferred embodiment of the present invention, a set of connecting plates 16 are provided on the base 1, and a limiting plate 18 for limiting the movement of the wire harness of the terminal body 7 is fixedly installed on each of the connecting plates 16. Multiple limiting blocks 17 for misaligning and isolating adjacent wire harnesses are installed on the limiting plate 18 located on the outer side, and the limiting blocks 17 act on multiple wire harnesses at intervals.

[0040] In this embodiment, at the testing station, when the spacing adjustment mechanism moves the wire harness pullback testing mechanism and the connecting plate 16, two limiting plates 18 fixed on the connecting plate 16 act on the wire harness one in front of the other, restricting its free movement and ensuring that the area where the wire harness is straightened is located between the two limiting plates. A limiting block 17 is installed on one of the limiting plates 18, and its spaced design allows it to be inserted between multiple wire harnesses. It cooperates with the staggered strip buckles 8 already installed on the wire harness to forcibly separate adjacent wire harnesses in the vertical direction, achieving physical isolation and completely avoiding interference from adjacent wire harnesses when the arc-shaped clamp 24 clamps a single wire harness.

[0041] In a further preferred embodiment of the present invention, the wire harness pullback detection mechanism includes: an L-shaped plate 19 disposed on one side of the connecting plate 16; a first U-shaped plate 20 fixedly mounted on the L-shaped plate 19, wherein a first bidirectional screw 21 is rotatably mounted on the first U-shaped plate 20; a first slider 22 threaded onto the first bidirectional screw 21; an electric telescopic rod 23 fixedly mounted on one side of the first slider 22; an arc-shaped clamping block 24 disposed on the electric telescopic rod 23 for clamping a single wire harness; a tension sensor 25 mounted on the electric telescopic rod 23 and the arc-shaped clamping block 24 for monitoring the tension of the arc-shaped clamping block 24; and a first motor 28 fixedly mounted on one side of the first U-shaped plate 20, wherein the coupling output shaft of the first motor 28 is fixedly connected to the first bidirectional screw 21.

[0042] In this embodiment, when the wire harness needs to be tested, the first motor 28 starts and drives the first bidirectional screw 21 to rotate, causing it to drive a set of first sliders 22 to slide relative to each other, and causing the arc-shaped clamping block 24 to approach and clamp the target wire harness. After clamping, the piston rod of the electric telescopic rod 23 retracts downward, causing the arc-shaped clamping block 24 and the clamped wire harness to move downward, simulating a pull-back action. During this process, the tension sensor 25 integrated between the electric telescopic rod 23 and the arc-shaped clamping block 24 measures the force required to pull down the wire harness in real time and accurately, and feeds the data back to the control system. The control system determines whether the connection between the wire harness and the terminal is firm based on whether the wire harness separates from the terminal and the displacement after the tension reaches a preset threshold.

[0043] In a further preferred embodiment of the present invention, a support plate 26 is fixedly installed on the top of the first slider 22, a guide groove is provided on one side of the support plate 26, a guide rod is fixedly installed in the guide groove, and a guide block 27 for guiding the arc-shaped clamping block 24 to move up and down is slidably sleeved on the guide rod, and the guide block 27 is fixedly connected to the arc-shaped clamping block 24.

[0044] In this embodiment, when the electric telescopic rod 23 drives the arc-shaped clamp 24 to move up and down in a straight line to perform a pull-out test, the guide block 27 fixed on the arc-shaped clamp 24 slides along the guide rod fixed on the support plate 26. The sliding pair formed by the guide rod and the guide block 27 provides precise vertical guidance for the movement of the arc-shaped clamp 24, effectively preventing the arc-shaped clamp 24 from deflecting, shaking or jamming during the force process, ensuring that the direction of the pull force is always perpendicular to the terminal plane, thereby ensuring the accuracy of the measurement data of the tension sensor 25 and the reliability of the test.

[0045] In a further preferred embodiment of the present invention, a connecting plate 29 is fixedly installed on one side of the connecting plate 16, and a clamping plate 30 is inserted into the connecting plate 29. The clamping plate 30 is fixedly connected to the L-shaped plate 19. A fastening bolt is installed on the connecting piece at the bottom of the connecting plate 29, and the fastening bolt is threadedly connected to the clamping plate 30 to fix the clamping plate 30.

[0046] In this embodiment, when it is necessary to test connector terminals of different sizes or types, a series of wire harness pullback testing mechanisms and placement box 6 need to be replaced. When replacing the wire harness pullback testing mechanism, the fastening bolts at the bottom of the connecting plate 29 can be loosened, the clamping plate 30 can be removed, and the wire harness pullback testing mechanism can be replaced.

[0047] In a further preferred embodiment of the present invention, a fixing mechanism for clamping and fixing the terminal body 7 is provided on one side of the connecting plate 16. The fixing mechanism is located above the wire harness pullback detection mechanism. The fixing mechanism includes: a second U-shaped plate 31 fixedly installed on one side of the connecting plate 16; a second bidirectional screw 32 rotatably sleeved on the second U-shaped plate 31, and a set of second sliders 33 threaded on the second bidirectional screw 32; connecting clamps 34 respectively provided on the set of second sliders 33 for clamping the outer shell of the terminal body 7; force sensors 35 installed on the second sliders 33 and the connecting clamps 34 for monitoring the clamping force of the connecting clamps 34; and a second motor 36 fixedly installed on the second U-shaped plate 31 for driving the second bidirectional screw 32 to rotate, wherein the coupling output shaft of the second motor 36 is fixedly connected to the second bidirectional screw 32.

[0048] In this embodiment, before performing the wire harness pullback test, the terminal housing needs to be stabilized. After the spacing adjustment mechanism adjusts the spacing between the two connecting plates 16, the second motor 36 starts and drives the second bidirectional screw 32 to rotate. The two second sliders 33, which are threaded onto the second bidirectional screw 32, move towards each other under the constraint of the second U-shaped plate 31, causing the two connecting clamps 34 to clamp the housing of the terminal body 7. The force sensor 35 monitors the magnitude of the clamping force in real time and transmits the signal to the control system. The control system presets a safe clamping force range according to the product specifications to achieve constant force clamping, which ensures that the terminal is absolutely fixed in the housing during the test and avoids damaging the product due to excessive clamping force.

[0049] In a further preferred embodiment of the present invention, a connecting frame 37 is installed on the transmission chain 4, the connecting frame 37 is detachably connected to the fixed frame 5, and an annular guide rail 38 for guiding the movement of the connecting frame 37 is fixedly installed on the inner top of the support frame 2. A spherical guide rod 39 is movably installed in the annular guide rail 38, and the spherical guide rod 39 is fixedly connected to the connecting frame 37.

[0050] In this embodiment, during the cyclic movement of the transmission chain 4, the fixed frame 5 and the placement box 6 are moved via the connecting frame 37. To ensure the stability of the fixed frame 5 during long-stroke movement and prevent swaying due to chain deflection or force, an annular guide rail 38 is provided on the inner side of the top of the support frame 2. The spherical end of the ball-shaped guide rod 39, fixed on the connecting frame 37, is movably embedded in the slide of the annular guide rail 38. When the connecting frame 37 moves with the chain, the ball-shaped guide rod 39 rolls and slides within the annular guide rail 38, providing additional support and guidance for the entire moving component, greatly enhancing the system rigidity and ensuring the stability and accuracy of the placement box 6 during operation and positioning.

[0051] In a further preferred embodiment of the present invention, the base 1 is provided with a spacing adjustment mechanism for adjusting the spacing of a set of wire harness pullback detection mechanisms. The spacing adjustment mechanism includes: a connecting plate fixedly installed on the top of the base 1; a third bidirectional screw 40 rotatably installed on the connecting plate, and a set of third sliders 41 threaded on the third bidirectional screw 40; an arc-shaped baffle 42 fixedly installed on the connecting plate for protecting the third bidirectional screw 40, the arc-shaped baffle 42 being slidably connected to the set of third sliders 41; and a double-headed motor 43 fixedly installed on the top of the base 1 for driving the third bidirectional screw 40 to rotate, the coupling output shaft of the double-headed motor 43 being fixedly connected to the third bidirectional screw 40.

[0052] In this embodiment, after the terminal body 7 is inspected, when it flows to the next station, the spacing adjustment mechanism drives the wire harness pullback detection mechanism to reset, so as to open the channel for terminal flow. At this time, the dual-head motor 43 is started to drive the third bidirectional screw 40 to rotate. The third bidirectional screw 40 drives the two third sliders 41 to slide away from each other and move the connecting plate away from the moving channel of the terminal body 7, so as to prevent the equipment on the connecting plate 16 from affecting the movement of the terminal body 7.

[0053] In a further preferred embodiment of the present invention, a push block 44 for automatically feeding the terminal body 7 is slidably provided on the inner side of the placement box 6. A connecting rod 45 is fixedly installed on one side of the push block 44. A connecting spring 46 for resetting the push block 44 is sleeved on the connecting rod 45. The two ends of the connecting spring 46 are fixedly connected to the placement box 6 and the connecting rod 45 baffle, respectively. A push plate 47 for pushing the connecting rod 45 and the push block 44 to move is provided on one side of the fixing plate 9.

[0054] In this embodiment, at the separation station, when it is necessary to push the completed terminal body 7 out of the placement box 6, the push plate 47 moves towards the placement box 6 under the drive of the pushing mechanism. The push plate 47 contacts the end of the connecting rod 45 and continues to advance, overcoming the elastic force of the connecting spring 46, and pushes the connecting rod 45 and the push block 44 fixed thereto to slide inside the placement box 6. The push block 44 pushes the terminal housing, causing it to slide out of the placement box 6. When the pushing action is completed, and the connecting rod 45 moves through the transmission chain 4, causing it to disengage from the push plate 47, the restoring force of the connecting spring 46 pulls the connecting rod 45 and the push block 44 to automatically reset to the initial position, preparing to receive the next terminal.

[0055] To further improve the performance of this device, in addition to the above-mentioned solutions, this solution also includes the following embodiments:

[0056] In another embodiment of the present invention, the fixed plate 9 is provided with a pushing mechanism for moving the push plate 47 to automatically unload the terminal body 7. The pushing mechanism includes: a threaded rod 48 rotatably mounted on the fixed plate 9; a threaded cylinder 49 threadedly sleeved on the threaded rod 48, one end of the threaded cylinder 49 being fixedly connected to the push plate 47; a limiting rod 50 fixedly mounted on one side of the fixed plate 9 for horizontally guiding the threaded cylinder 49, a limiting block 51 slidably sleeved on the limiting rod 50, and the limiting block 51 being fixedly connected to the threaded cylinder 49; and first sprockets 52 respectively fixedly sleeved on the third bidirectional screw 40 and the threaded rod 48, with first chains 53 sleeved on the two first sprockets 52.

[0057] In this embodiment, when the dual-head motor 43 drives the third bidirectional screw 40 to rotate to adjust the spacing of the wire harness pullback detection mechanism, the rotational motion is transmitted to the threaded rod 48 through the first sprocket 52 and the first chain 53. The threaded rod 48 drives the threaded cylinder 49 to move linearly, and the threaded cylinder 49 drives the push plate 47 to move. To ensure that the threaded cylinder 49 only moves linearly and does not rotate, it is slidably connected to the limit rod 50 through the limit block 51. The limit rod 50 provides horizontal guidance. The wire harness pullback detection mechanism spacing adjustment and the feeding and pushing action realize mechanical linkage, saving an independent power source.

[0058] In another embodiment of the present invention, a mounting plate 54 is fixedly installed on the base 1. The mounting plate 54 is located below the separation mechanism. A conveyor belt 55 for conveying the tested terminal body 7 and the staggered strip buckle 8 is installed on the mounting plate 54. A transmission rod 56 is rotatably installed on the support frame 2. A second sprocket 57 is fixedly sleeved on the shaft of the transmission rod 56 and the transmission sprocket 3. A second chain 58 is sleeved on the two second sprockets 57. The second chain 58 and the two second sprockets 57 mesh with each other. A connecting rod 59 is rotatably installed on one side of the mounting plate 54. A bevel gear 60 is fixedly sleeved on both ends of the connecting rod 59, the shaft of the conveyor belt 55, and the bottom end of the transmission rod 56. Each set of bevel gears 60 meshes with each other.

[0059] In this embodiment, while the servo motor 14 drives the transmission sprocket 3 to rotate, it transmits power to the transmission rod 56 through the second sprocket 57 fixed on the shaft of the transmission sprocket 3 and the transmission rod 56, and the second chain 58 sleeved on it. The bevel gear 60 at the bottom of the transmission rod 56 meshes with the bevel gear 60 installed at one end of the connecting rod 59, changing the direction of power. The bevel gear 60 at the other end of the connecting rod 59 then meshes with the bevel gear 60 on the drive roller shaft of the conveyor belt 55, ultimately driving the conveyor belt 55 to run. This makes the movement of the conveyor belt synchronized with the movement of the main water line, and the conveyor belt is only driven to transport the unloaded items when the production line moves (i.e., loading or station change).

[0060] In another embodiment of the present invention, the base 1 is provided with a feeding mechanism for placing the terminal body 7 on the conveyor belt 55 after the terminal body 7 is removed from the placement box 6. The feeding mechanism includes: a U-shaped frame 62 fixedly installed on the top of the base 1, the U-shaped frame 62 spanning across the conveyor belt 55; a round rod 63 rotatably installed on the U-shaped frame 62; an electric gripper 64 installed at one end of the round rod 63 for clamping the wire harness of the terminal body 7; and a linkage mechanism provided on the hinge of the rotating shaft of the round rod 63 and the first cylinder 10 for synchronously driving the round rod 63 and the first cylinder 10 to rotate downward.

[0061] In this embodiment, after the pusher 44 pushes the terminal out of the placement box 6, the unloading mechanism is responsible for smoothly transferring it to the conveyor belt 55. Specifically, while the linkage mechanism drives the first cylinder 10 to flip down, it also drives the round rod 63 to rotate downward. Subsequently, as the round rod 63 continues to flip down, the electric gripper 64 transports the terminal to the top of the conveyor belt 55 and then releases it, gently placing the terminal on the conveyor belt 55. This avoids damage or messy placement that may be caused by the terminal falling freely after being pushed out.

[0062] In another embodiment of the present invention, the linkage mechanism includes: a partition 65 fixedly installed on one side of the fixed plate 9; connecting gears 66 respectively installed on the hinge shaft of the partition 65 and the first cylinder 10, the two connecting gears 66 meshing with each other; third sprockets 67 respectively fixedly sleeved on the shaft of the connecting gears 66 and the shaft of the round rod 63 located on the partition 65; a plurality of limiting wheels 68 rotatably installed on the partition 65; and a third chain 69 sleeved on the two third sprockets 67 and the plurality of limiting wheels 68.

[0063] In this embodiment, when the second cylinder 61 pushes the hinge of the first cylinder 10 to rotate downward around the hinge axis, the connecting gear 66 fixed on the hinge axis rotates accordingly. The connecting gear 66 meshes with another connecting gear 66 mounted on the partition plate 65, transmitting the motion. The third sprocket 67 on the connecting gear shaft transmits the rotation to another third sprocket 67 fixed on the rotating shaft of the round rod 63 through the third chain 69 (guided and tensioned by multiple limit wheels 68), thereby driving the round rod 63 to rotate downward synchronously. This mechanical linkage ensures the strict synchronization and coordination of the two actions of buckle separation and terminal transfer.

[0064] In summary, compared with related technologies, this device, through its integrated circular production line design, seamlessly connects multiple processes such as manual feeding, automatic positioning, multi-cable misalignment isolation, robustness testing, automatic buckle separation, and automatic product unloading and collection. This replaces the tedious and high-intensity operations of traditional testing, such as manually straightening wire harnesses, manually loading and unloading counterweights, and repeatedly disassembling and reassembling buckles. It not only significantly reduces the labor intensity of operators but also greatly shortens the testing cycle of individual products through multi-station parallel operation and mechanical linkage, resulting in a qualitative improvement in overall work efficiency. It can well meet the high requirements of modern large-scale production for testing efficiency, consistency, and reliability.

[0065] It should be understood that the disclosed apparatus can be implemented in other ways, as illustrated in the several embodiments provided in this application. The above embodiments are merely illustrative of the technical solutions of the present invention and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add to, delete from, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A rapid testing device for connector terminals, characterized in that, include: The base and the support frame fixedly mounted on the base; A set of drive sprockets for conveying terminal bodies are rotatably mounted on the support frame, and a drive chain is sleeved on the set of drive sprockets; A mounting bracket is provided on the transmission chain; A placement box for placing the terminal body is installed on the mounting bracket; A staggered strip buckle is attached to the wire harness on the terminal body, and a pull ring is installed on the staggered strip buckle; A servo motor is fixedly installed on the top of the support frame to drive the transmission sprocket to rotate, and the output shaft of the servo motor coupling is fixedly connected to the transmission sprocket shaft; The base is provided with a set of connecting plates. Each of the connecting plates is fixedly installed with a limiting plate for limiting the movement of the terminal body wire harness. The limiting plate on the outer side is equipped with multiple limiting blocks for misaligning and isolating adjacent wire harnesses. The limiting blocks act on multiple wire harnesses at intervals. A wire harness pullback detection mechanism, mounted on the base, is used to detect the connection firmness of the terminal body. The wire harness pullback detection mechanism includes: an L-shaped plate on one side of the connecting plate; a first U-shaped plate fixedly mounted on the L-shaped plate, with a first bidirectional screw rotatably mounted on the first U-shaped plate; a first slider threaded onto the first bidirectional screw; an electric telescopic rod fixedly mounted on one side of the first slider; an arc-shaped clamping block on the electric telescopic rod for clamping a single wire harness; a tension sensor mounted on the electric telescopic rod and the arc-shaped clamping block for monitoring the tension of the arc-shaped clamping block; and a first motor fixedly mounted on one side of the first U-shaped plate, with the output shaft of the first motor coupling fixedly connected to the first bidirectional screw. A separation mechanism for automatically separating the misaligned strip buckle and the wire harness is provided on the right side of the wire harness pull-back mechanism. The separation mechanism includes: a fixed plate fixedly installed on the base; a first cylinder hinged to the fixed plate for pulling the misaligned strip buckle and disengaging it from the wire harness; a thumb cylinder mounted on the first cylinder for clamping the pull ring, and a set of clamping plates are installed on the thumb cylinder; and a second cylinder hinged to the fixed plate and the first cylinder sleeve for adjusting the angle of the clamping plates.

2. The connector terminal rapid testing device as described in claim 1, characterized in that, The support frame is equipped with a photoelectric detection device for monitoring the terminal body. A baffle plate is hinged to the outside of the placement box to prevent the terminal body from falling. Both the baffle plate and the placement box are equipped with locking strips, and the two locking strips are engaged with each other. A wire baffle plate for limiting the wire harness is fixedly installed on one side of the fixing plate, and the wire baffle plate is located above the thumb cylinder.

3. The connector terminal rapid testing device as described in claim 1, characterized in that, A support plate is fixedly installed on the top of the first slider. A guide groove is provided on one side of the support plate. A guide rod is fixedly installed in the guide groove. A guide block for guiding the arc-shaped clamp block to move up and down is slidably sleeved on the guide rod. The guide block is fixedly connected to the arc-shaped clamp block.

4. The connector terminal rapid testing device as described in claim 1, characterized in that, A connecting plate is fixedly installed on one side of the connecting plate, and a clamping plate is inserted into the connecting plate. The clamping plate is fixedly connected to the L-shaped plate. A fastening bolt is installed on the connecting piece at the bottom of the connecting plate. The fastening bolt is threadedly connected to the clamping plate to fix the clamping plate.

5. The connector terminal rapid testing device as described in claim 1, characterized in that, A fixing mechanism for clamping and fixing the terminal body is provided on one side of the connecting plate. The fixing mechanism is located above the wire harness pullback detection mechanism. The fixing mechanism includes: a second U-shaped plate fixedly installed on one side of the connecting plate; a second bidirectional screw rotatably sleeved on the second U-shaped plate, and a set of second sliders threaded on the second bidirectional screw; connecting clamps respectively provided on the set of second sliders for clamping the terminal body shell; force sensors installed on the second sliders and connecting clamps for monitoring the clamping force of the connecting clamps; and a second motor fixedly installed on the second U-shaped plate for driving the second bidirectional screw to rotate, with the output shaft of the second motor coupling fixedly connected to the second bidirectional screw.

6. The connector terminal rapid testing device as described in claim 1, characterized in that, A connecting frame is installed on the transmission chain. The connecting frame is detachably connected to the fixed frame. An annular guide rail for guiding the movement of the connecting frame is fixedly installed on the top inner side of the support frame. A spherical guide rod is movably installed inside the annular guide rail and is fixedly connected to the connecting frame.

7. The connector terminal rapid testing device as described in claim 1, characterized in that, The base is provided with a spacing adjustment mechanism for adjusting the spacing of a set of wire harness pullback detection mechanisms. The spacing adjustment mechanism includes: a connecting plate fixedly installed on the top of the base; a third bidirectional screw rotatably installed on the connecting plate, with a set of third sliders threaded onto the third bidirectional screw; an arc-shaped baffle fixedly installed on the connecting plate for protecting the third bidirectional screw, the arc-shaped baffle being slidably connected to the set of third sliders; and a dual-head motor fixedly installed on the top of the base for driving the rotation of the third bidirectional screw, the output shaft of the dual-head motor coupling being fixedly connected to the third bidirectional screw.

8. The connector terminal rapid testing device as described in claim 1, characterized in that, The inner side of the placement box is provided with a push block for automatically feeding the terminal body. A connecting rod is fixedly installed on one side of the push block. A connecting spring for resetting the push block is sleeved on the connecting rod. The two ends of the connecting spring are fixedly connected to the placement box and the connecting rod baffle, respectively. A push plate is provided on one side of the fixed plate for pushing the connecting rod and the push block to move.

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