An apparatus for testing the performance of electrical connector spring contacts.

Abstract

This invention provides a device for performance testing of electrical connector spring contacts. The device includes a base and a pressure pin module, a loading / unloading module, a lifting module, and a control box mounted on the base. The pressure pin module includes a fixed frame and multiple weights and pressure pins arranged in a rectangular matrix. The loading / unloading module includes a positioning plate, a transfer cylinder, and a positioning column. The lifting module includes rolling wheels, a cam, and a lifting cylinder. The cam profile controls the smooth lifting and lowering of the fixed frame, allowing the weights to accurately apply pressure to the spring contacts using their own weight. This device enables batch synchronous automatic testing of multiple spring contact products. Test parameters are precisely controlled by the program, eliminating reliance on manual labor, significantly improving testing efficiency and data consistency, while reducing the cost of specialized fixtures. It is suitable for performance and reliability testing of electronic connector spring contacts and switch socket spring contacts.

Description

Technical Field

[0001] This utility model belongs to the field of electronic component testing technology, and in particular relates to a device for testing the performance of electrical connector spring contacts. Background Technology

[0002] Connector springs and switch socket springs are critical conductive elastic components inside electronic devices. Their stress stability and fatigue deformation resistance directly determine the reliability of electronic devices; therefore, stress performance testing is essential before they leave the factory. Currently, existing spring testing equipment has many technical shortcomings, severely restricting the production and testing efficiency of enterprises. Specific problems are as follows:

[0003] First, the testing methods are limited and inefficient. Existing testing methods are relatively simple and restricted by testing fixtures and operating methods. A single test can only clamp and test a single spring product, making it impossible to achieve simultaneous batch testing of multiple products. Under mass production conditions, the testing workload is large and time-consuming, and the testing progress cannot match the production rhythm, thus restricting the overall production progress.

[0004] Second, the high degree of human intervention results in poor testing accuracy. Existing testing equipment lacks an automated timing control structure, and key parameters such as test duration, stress stabilization time, and pressure interval rely entirely on manual control. Manual operation suffers from problems such as reaction delays and subjective judgment biases, making it impossible to accurately control the test sequence. This leads to poor consistency and low reliability of test data, and makes it extremely easy to misjudge good products and miss defective products.

[0005] Third, the jigs have poor versatility and high operating costs. Existing test jigs are custom-made structures, with each jig only suitable for a single specification and a single spring product. To meet the testing needs of different spring models, companies need to customize and process a large number of custom jigs, resulting in high jig manufacturing costs. At the same time, the storage, maintenance, and upkeep of a large number of jigs are difficult, further increasing the company's production and operating costs.

[0006] In summary, there is an urgent need in the market for a shrapnel performance testing device that is highly versatile, automated, accurate, and capable of batch testing, in order to address the industry pain points of existing technologies. Utility Model Content

[0007] The purpose of this invention is to provide a device for testing the performance of electrical connector spring contacts, which solves the problems of low testing efficiency, large human error, poor testing accuracy, weak fixture versatility, and high cost of existing spring contact testing equipment, and realizes automated, batch, and high-precision testing of spring contacts, while reducing labor and fixture management costs.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An apparatus for testing the performance of spring contacts in electrical connectors, comprising:

[0010] Base;

[0011] The pressure needle module includes multiple pressure needles for simultaneously applying test pressure to multiple products;

[0012] The loading and unloading module is installed on the base below the pressure pin module and is used to carry and transport products to or from the testing station.

[0013] A lifting module is installed on the base, and its output end is connected to the pressure needle module to drive the entire pressure needle module to perform lifting and lowering movements.

[0014] The control box, installed on the base above the lifting module, is used to control the automated operation of the pressure needle module, loading and unloading module and lifting module to automatically test the product performance.

[0015] The pressure needle module includes a fixing frame, on which a plurality of mounting holes are evenly spaced in a matrix along its length and width. A weight is movably inserted into each mounting hole, and a pressure needle for contacting the product is installed at the lower end of each weight.

[0016] Furthermore, the pressure needle is provided with multiple segments with different outer diameters along its axial direction, and an annular step surface or annular groove transition is formed between adjacent segments.

[0017] Furthermore, the fixing frame includes an upper fixing plate and a lower fixing plate arranged in parallel and spaced apart, and a plurality of fixing posts connecting the upper fixing plate and the lower fixing plate, wherein the mounting holes on the upper fixing plate and the lower fixing plate are respectively arranged opposite to each other.

[0018] Furthermore, the loading and unloading module includes a positioning plate, a transfer cylinder for driving the positioning plate to move linearly, and a guide rail slider assembly mounted on the base for supporting the movement of the positioning plate.

[0019] Furthermore, the positioning plate is equipped with a plurality of positioning posts arranged at intervals for positioning, and a first limiting component is fixedly installed on one side of the positioning plate.

[0020] Furthermore, the lifting module includes:

[0021] A cam is slidably mounted on the base;

[0022] A lifting cylinder is mounted on the base, and its piston rod is connected to the cam to drive the cam to slide.

[0023] A rolling wheel is rotatably mounted on the pressure needle module and maintains rolling contact with the working surface of the cam;

[0024] The working surface profile of the cam is configured such that, driven by the lifting cylinder, the pressing needle module is lowered or raised at a preset speed through the rolling conversion of the rolling wheel.

[0025] Furthermore, the lifting module also includes a guide mechanism for supporting the up-and-down movement of the pressure needle module. The guide mechanism includes at least two guide rods fixedly installed on the base, and a slide fixedly installed on the pressure needle module and slidably connected to the guide rods.

[0026] Furthermore, the rolling wheel, cam, and lifting cylinder are symmetrically installed on both sides of the length direction of the pressure needle module; the lower end of the cam is provided with a sliding part, and a sliding support block for supporting the sliding of the cam is installed on the base, and a second limiting component is installed at the end of the sliding support block away from the lifting cylinder.

[0027] Furthermore, the control box is equipped with at least one control button, indicator light, buzzer and display screen, and the control box is electrically connected to the pressure needle module, loading and unloading module and lifting module respectively.

[0028] Compared with existing technologies, it has the following beneficial technical effects:

[0029] 1. This utility model adopts multiple sets of weights and pressure needles arranged in a rectangular matrix, combined with a multi-station positioning plate, which can simultaneously complete the synchronous testing of multiple spring pieces of the same or different specifications, optimize the testing process, completely solve the problem of low efficiency of traditional single-station testing, meet the rapid testing needs of mass production scenarios, and ensure stable production rhythm.

[0030] 2. This utility model abandons the manual parameter control mode. It sets key parameters such as pressure holding time and number of tests through a control box, and relies on cam transmission to precisely control the lifting and lowering sequence. The weight of the weight applies constant pressure, eliminating human operation errors. The test data is consistent and reliable, effectively avoiding the problems of misjudgment and omission of product performance.

[0031] 3. This device can adapt to the testing of spring contacts of various specifications of electrical connectors without changing the fixture, replacing the traditional special custom fixtures and greatly reducing the number of fixtures to be manufactured; at the same time, it reduces the cost of fixture storage, maintenance and upkeep, simplifies management processes, reduces enterprise operating expenses and improves economic efficiency.

[0032] 4. The entire testing process is automated, requiring only manual material loading and simultaneous pressing of the dual start buttons, making operation simple and safe; the integrated design of the control box makes parameter settings and status monitoring clear at a glance, optimizing the convenience and practicality of the test. Attached Figure Description

[0033] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0034] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an embodiment of the present utility model;

[0035] Figure 2 This is a three-dimensional structural diagram of the pressure needle module in an embodiment of this utility model;

[0036] Figure 3 This is a three-dimensional structural diagram of the loading and unloading module in an embodiment of this utility model;

[0037] Figure 4 This is a schematic diagram of the lifting module in an embodiment of the present invention.

[0038] Figure 5 This is a schematic diagram of the control box in an embodiment of the present invention.

[0039] The attached diagram lists the components represented by each number as follows:

[0040] 10. Base; 11. Anti-slip feet; 20. Pressing pin module; 21. Fixing frame; 211. Upper fixing plate; 212. Lower fixing plate; 213. Fixing column; 214. Mounting hole; 22. Weight; 23. Pressing pin; 30. Loading / unloading module; 31. Positioning plate; 311. Positioning column; 32. Transfer cylinder; 33. Guide rail slider pair; 34. First limit component; 341. Buffer; 342. Stop bar; 35. Loading plate; 40. Lifting module; 41. Rolling wheel; 42. Cam; 421. Sliding part; 43. Lifting cylinder; 44. Sliding support block; 45. Second limit component; 46. Guide mechanism; 461. Slide seat; 462. Guide rod; 47. Disassembly plate; 50. Control box; 51. Control button; 52. Indicator light; 53. Buzzer; 54. Display screen; 55. Housing. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0042] like Figures 1 to 5As shown, this utility model embodiment provides a device for testing the performance of electrical connector springs, mainly used for testing the performance reliability of related products such as springs and switch socket springs under stress in the electronics industry. The device includes a base 10 and a pin-pressing module 20, a loading / unloading module 30, a lifting module 40, and a control box 50 mounted on the base 10.

[0043] The pressure needle module 20 is installed at the output end of the lifting module 40 and is used to apply test pressure to the spring. It can move up and down under the drive of the lifting module 40. The loading and unloading module 30 is installed below the pressure needle module 20 and is used to carry the product to be tested and move it to or out of the testing station. The control box 50 is installed on the base 10 at one end of the pressure needle module 20 and is used to centrally control the coordinated operation of each module. The control box 50 has an embedded PLC control motherboard to realize the linkage control of each module.

[0044] The base 10 provides the installation foundation for the entire device. It is made of high-strength steel plate welded together and the surface is treated with anti-rust spraying. Four rubber anti-slip feet 11 are evenly installed at the bottom of the base 10, and the bottom of the feet is provided with anti-slip texture. These feet can buffer the vibration of the equipment during operation, prevent the equipment from slipping, ensure that the equipment remains stable during operation, and avoid testing errors caused by vibration.

[0045] The pressure needle module 20 is the core component for performing the test. It includes a mounting frame 21 made of aluminum alloy, on which multiple weights 22 are mounted. Each weight 22 has a pressure needle 23 attached to its lower end for contacting the spring sheet. The multiple weights 22 are arranged in a rectangular matrix with uniform spacing on the mounting frame 21, for example, in a 2×2, 2×3, or 3×3 matrix configuration. The specific number can be determined according to actual production needs. This matrix arrangement allows the device to simultaneously test multiple spring sheet products, greatly improving testing efficiency.

[0046] Each pressure needle 23 has multiple segments with different outer diameters along the axial direction, and an annular step surface or annular groove transitions between adjacent segments. This multi-segment structure design allows the same pressure needle 23 to adapt to the testing needs of spring products of different specifications and sizes, enhancing the versatility of the device and avoiding the cost of making a dedicated pressure needle 23 for each specification of spring.

[0047] The fixing frame 21 includes an upper fixing plate 211, a lower fixing plate 212, and a fixing post 213 installed between the two. The upper fixing plate 211 and the lower fixing plate 212 are connected by the fixing post 213 to form a stable frame structure. The weight 22 is installed above the lower fixing plate 212 and passes through the upper fixing plate 211. The pressure needle 23 extends from the lower end of the weight 22. Specifically, the upper fixing plate 211 and the lower fixing plate 212 are respectively machined with through holes of the same number as the weight 22 in an equally spaced matrix along the length and width directions as mounting holes 214. The mounting holes 214 of the upper fixing plate 211 match the outer contour of the weight 22, and the mounting holes 214 of the lower fixing plate 212 match the maximum shaft diameter of the pressure needle 23. In this embodiment, a rectangular columnar stainless steel weight 22 is inserted into each mounting hole 214 of the upper fixing plate 211, and the weight 22 can move freely up and down in the hole.

[0048] The weights 22 can be selected in different weight specifications according to the pressure required for the test. Each weight 22 has a threaded connection at its lower end to a pressure needle 23. Specifically, the pressure needle 23 has rounded corners at its head and four cylindrical segments of different diameters designed axially, forming two annular stepped surfaces and an annular groove. This structure allows it to adapt to the testing requirements of springs with different depths and apertures. By combining weights 22 of different weights and pressure needles 23 with different head styles, a very wide range of spring product testing specifications can be covered. Preferably, the pressure needle 23 is made of hard alloy material, which is wear-resistant and not easily deformed.

[0049] Before the test, the bottom end of the weight 22 abuts against the lower fixed plate 212 and is supported by the lower fixed plate 212. During the test, as the fixed frame 21 descends, the pressure needle 23 first contacts the spring. After the fixed frame 21 continues to descend slightly, the bottom end of the weight 22 separates from the lower fixed plate 212. At this time, the weight 22 relies entirely on its own weight to apply force to the spring through the pressure needle 23, ensuring stable force and accurate calculation.

[0050] The loading / unloading module 30 includes a positioning plate 31 and a transfer cylinder 32 for driving the positioning plate 31 to move linearly. The piston rod of the transfer cylinder 32 is connected to the positioning plate 31 and can drive the positioning plate 31 to slide between the loading position and the testing position.

[0051] At both ends of the base 10, guide rail slider pairs 33 are respectively installed to support the movement of the positioning plate 31. The guide rail slider pairs 33 include guide rails fixed to the base 10 and sliders installed on the bottom of the positioning plate 31 and slidingly engaged with the guide rails. The arrangement of the guide rail slider pairs 33 ensures that the positioning plate 31 can move smoothly and accurately along a straight line under the drive of the transfer cylinder 32.

[0052] The positioning plate 31 is equipped with multiple positioning posts 311 arranged at intervals. Specifically, the positioning posts 311 are arranged in a row at each end of the positioning plate 31, with multiple positioning posts 311 in each row arranged at intervals. The positioning posts 311 are vertically embedded in the positioning plate 31, and the top of the positioning posts 311 is chamfered to facilitate the quick placement and positioning of the loading plate 35. During testing, the loading plate 35, which contains multiple electrical connectors under test, is placed on the positioning plate 31, so that the positioning holes on the loading plate 35 mate with the positioning posts 311, thereby achieving rapid and accurate positioning.

[0053] A first limiting component 34 is also fixedly installed on one side of the positioning plate 31. The first limiting component 34 can be a mechanical limiting block or a sensor limiting device, used to limit the forward or backward movement of the positioning plate 31 to ensure that the product can accurately reach the test position and prevent overshoot. Specifically, the first limiting component 34 includes buffers 341 installed on the base 10 at both ends in the moving direction of the positioning plate 31 and stop bars 342 installed on the positioning plate 31.

[0054] The lifting module 40 includes a rolling wheel 41 rotatably mounted on the lower fixed plate 212 of the pressure needle module 20 fixing frame 21, a cam 42 slidably mounted on the base 10 and in rolling contact with the rolling wheel 41, and a lifting cylinder 43 whose piston rod is connected to the cam 42 for driving the cam 42 to slide. The upper surface of the cam 42 has a specific curved profile, and its working surface profile is configured such that, driven by the lifting cylinder 43, the pressure needle module 20 descends or rises at a preset speed through the rolling of the rolling wheel 41. When the lifting cylinder 43 pushes the cam 42 to move horizontally, the rolling wheel 41 rises or falls along the curved surface of the cam 42, thereby driving the entire fixing frame 21 and the pressure needle module 20 to move up and down. Specifically, the working surface profile of the cam 42 is a curved surface with a gradually changing slope.

[0055] Preferably, to ensure the smoothness and uniform force distribution during the lifting and lowering of the fixed frame 21, one of each of the rolling wheel 41, cam 42, and lifting cylinder 43 is installed on each side of the fixed frame 21 along its length, i.e., a symmetrical drive structure with double cams 42 is adopted. The lifting cylinders 43 on both sides operate synchronously, pushing the cams 42 on both sides to move simultaneously, so that the rolling wheels 41 on both sides of the fixed frame 21 roll synchronously along the contour of the cams 42, thereby achieving smooth lifting and lowering of the fixed frame 21.

[0056] The lower end of the cam 42 has a protruding sliding part 421, and a corresponding sliding support block 44 is installed on the base 10 to support the sliding of the cam 42. The sliding support block 44 has a sliding groove that cooperates with the sliding part 421, so that the cam 42 can slide smoothly along a predetermined trajectory under the push of the lifting cylinder 43. Preferably, a disassembly plate 47 is detachably installed on the sliding support block 44. The disassembly plate 47 can prevent the cam 42 from disengaging upward, and can be quickly disassembled when the cam 42 has a problem and needs maintenance.

[0057] A second limiting component 45 is installed at the end of the sliding support block 44 away from the lifting cylinder 43. This component limits the end point of the cam 42's stroke, preventing the cam 42 from slipping and ensuring that the rolling wheel 41 can accurately reach the lowest position of the cam 42. Specifically, the second limiting component 45 includes a baffle and a buffer 341 mounted thereon.

[0058] Furthermore, the lifting module 40 also includes a guide mechanism 46 for supporting the vertical movement of the fixing frame 21, which includes multiple slides 461 and guide rods 462. The slides 461 are fixedly installed at the corners of the upper fixing plate 211 and lower fixing plate 212 of the fixing frame 21 of the pressure needle module 20, and are slidably connected to the guide rods 462, which are vertically fixedly installed on the base 10. Preferably, the slides 461 are linear bearings, and the guide rods 462 are precision guide posts that cooperate with the linear bearings. The cooperation between the slides 461 and the guide rods 462 provides precise guidance for the vertical movement of the fixing frame 21, ensuring that the pressure needle 23 can vertically and accurately contact the spring test point, avoiding deviation.

[0059] The control box 50's enclosure 55 is made of dustproof and waterproof sheet metal. Inside the enclosure 55, a PLC controller or industrial computer is integrated, which is electrically connected to the pressure pin module 20, the loading / unloading module 30, and the lifting module 40. The control box 50's panel is equipped with at least one control button 51, an indicator light 52, a buzzer 53, and a display screen 54. The control button 51 includes a start button, an emergency stop button, and a reset button; the indicator light 52 displays the equipment's operating status, such as running, standby, and alarm; the buzzer 53 sounds an alarm when the test is completed or an abnormality occurs; the display screen 54 displays and sets test parameters, such as holding time, number of tests, and current test progress. During equipment operation, the green indicator light 52 remains constantly lit; in case of a fault, the red indicator light 52 flashes and the buzzer 53 continuously sounds an alarm; after the test is completed, the buzzer 53 sounds a short beep, providing automated prompts for operators to monitor the test status. The internal electrical wiring of the control box 50 is waterproof and insulated, making it suitable for complex industrial operating environments.

[0060] In particular, the start button adopts a dual-button design, requiring the operator to press both hands simultaneously to start the test program, effectively preventing crushing accidents caused by single-handed operation and improving the safety performance of the equipment.

[0061] The method for testing the performance of electrical connector spring contacts using the above-mentioned device specifically includes the following steps:

[0062] Initial state: Before the equipment is running, each actuator cylinder is at its origin, the lifting cylinder 43 is at its retracting origin, the cam 42 is at its highest point, the fixed frame 21 is lifted, and the pressure needle 23 and the positioning plate 31 maintain a safe distance; the material transfer cylinder 32 is at its forward pushing origin, and the positioning plate 31 is at the front waiting position, which is convenient for the operator to place the product.

[0063] S1. The operator places the loading plate 35 containing the electrical connectors to be tested onto the positioning plate 31 in sequence, so that the positioning holes on the loading plate 35 correspond one-to-one with the positioning posts 311 on the positioning plate 31 to achieve product positioning and fixation. Since the positioning plate 31 has multiple positioning posts 311, multiple products can be placed at one time.

[0064] S2. The operator presses the start button with both hands simultaneously, activating the transfer cylinder 32, which moves the positioning plate 31 and the test product backward along the guide rail to the test position. The first limit component 34 limits the stroke of the positioning plate 31, ensuring that it stops accurately at the test station.

[0065] S3, the lifting cylinder 43 pushes forward, driving the cam 42 to move along the sliding support block 44, and the rolling wheel 41 rolls along the contour surface of the cam 42. Due to the contour design of the cam 42, the rolling wheel 41 gradually transitions from the high point to the low point of the cam 42, and the fixed frame 21 descends slowly accordingly. During this process, the slide 461 slides smoothly down along the guide rod 462, ensuring that the fixed frame 21 descends vertically.

[0066] S4. The fixing frame 21 continues to descend, and the pressure needle 23 slowly contacts the spring of the test product. As the fixing frame 21 descends further slightly, the bottom end of the weight 22 detaches from the lower fixing plate 212. The weight 22 is no longer supported by the fixing frame 21, but relies entirely on its own weight to press onto the spring through the pressure needle 23. Since the weight of the weight 22 is a known fixed value, the test pressure on the spring is precisely controllable, avoiding the problem of uneven force application by manual methods.

[0067] S5. The equipment operates automatically according to the preset program in the control box 50, maintaining pressure according to the set holding time and performing cyclic tests according to the set number of tests. After the test is completed, the buzzer 53 sounds an alarm, the indicator light 52 flashes, and the display screen 54 displays the test results. Then the equipment automatically returns to the initial state, the lifting cylinder 43 retracts to the origin, the cam 42 returns to the high point, and the fixing frame 21 is lifted; the material transfer cylinder 32 pushes forward to the origin, and the positioning plate 31 returns to the front waiting position. The operator can then remove the tested product and place a new product to be tested, and enter the next cycle.

[0068] This invention, through ingenious mechanical structure design and automated control, perfectly achieves batch, synchronous, and precise mechanical property testing of multiple spring products. The matrix-type pressure pin module 20 and loading / unloading module 30 of the device give it strong versatility and significantly reduce fixture costs; the lifting module 40, composed of cam 42 and lifting cylinder 43, ensures the smoothness and timing accuracy of the loading process; and the two-hand start and safety logic control ensure a high degree of operational safety. The entire device greatly improves testing efficiency and reliability, effectively saves labor costs, and provides strong support for the quality control of springs in mass production.

[0069] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An apparatus for testing the performance of spring contacts in electrical connectors, characterized in that, include: Base; The pressure needle module includes multiple pressure needles for simultaneously applying test pressure to multiple products; The loading and unloading module is installed on the base below the pressure pin module and is used to carry and transport products to or from the testing station. A lifting module is installed on the base, and its output end is connected to the pressure needle module to drive the entire pressure needle module to perform lifting and lowering movements. The control box, installed on the base above the lifting module, is used to control the automated operation of the pressure needle module, loading and unloading module and lifting module to automatically test the product performance. The pressure needle module includes a fixing frame, on which a plurality of mounting holes are evenly spaced in a matrix along its length and width. A weight is movably inserted into each mounting hole, and a pressure needle for contacting the product is installed at the lower end of each weight.

2. The apparatus for testing the performance of electrical connector spring contacts according to claim 1, characterized in that, The pressure needle is provided with multiple column segments with different outer diameters along its axial direction, and an annular step surface or annular groove transition is formed between adjacent column segments.

3. The apparatus for testing the performance of electrical connector spring contacts according to claim 1, characterized in that, The fixing frame includes an upper fixing plate and a lower fixing plate arranged in parallel and spaced apart, and a plurality of fixing posts connecting the upper fixing plate and the lower fixing plate. The mounting holes on the upper fixing plate and the lower fixing plate are respectively arranged opposite to each other.

4. The apparatus for testing the performance of electrical connector spring contacts according to claim 1, characterized in that, The loading and unloading module includes a positioning plate, a transfer cylinder for driving the positioning plate to move linearly, and a guide rail slider assembly mounted on the base for supporting the movement of the positioning plate.

5. The apparatus for testing the performance of electrical connector spring contacts according to claim 4, characterized in that, The positioning plate is equipped with a plurality of positioning posts arranged at intervals for positioning, and a first limiting component is fixedly installed on one side of the positioning plate.

6. The apparatus for testing the performance of electrical connector spring contacts according to claim 1, characterized in that, The lifting module includes: A cam is slidably mounted on the base; A lifting cylinder is mounted on the base, and its piston rod is connected to the cam to drive the cam to slide. A rolling wheel is rotatably mounted on the pressure needle module and maintains rolling contact with the working surface of the cam; The working surface profile of the cam is configured such that, driven by the lifting cylinder, the pressing needle module is lowered or raised at a preset speed through the rolling conversion of the rolling wheel.

7. The apparatus for testing the performance of electrical connector spring contacts according to claim 6, characterized in that, The lifting module also includes a guide mechanism for supporting the up-and-down movement of the pressure needle module. The guide mechanism includes at least two guide rods fixedly installed on the base, and a slide block fixedly installed on the pressure needle module and slidably connected to the guide rods.

8. The apparatus for testing the performance of electrical connector spring contacts according to claim 6, characterized in that, The rolling wheel, cam, and lifting cylinder are symmetrically installed on both sides of the length direction of the pressure needle module; the lower end of the cam is provided with a sliding part, and a sliding support block for supporting the sliding of the cam is installed on the base. A second limiting component is installed at the end of the sliding support block away from the lifting cylinder.

9. The apparatus for testing the performance of electrical connector spring contacts according to claim 1, characterized in that, The control box is equipped with at least one control button, indicator light, buzzer and display screen. The control box is electrically connected to the needle pressing module, loading and unloading module and lifting module respectively.

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