A mechanical property testing machine

Abstract

A kind of mechanical property testing machine, it is related to connector test equipment technical field.The testing machine includes base, instantaneous interruption tester, instantaneous interruption tester is connected with the two ends of the series conductor by wire;Base is fixed with door type frame, the front of door type frame is equipped with beam for fixedly installing PCB circuit board;Driving motor is installed in the base, the output end of driving motor is connected with vertical upwardly protruding base, and fixedly connected with positioning turntable, the top of positioning turntable coaxially fixed with rotating rod, rotating rod is connected with bending force arm, bending force arm is used to drive the cable of high-speed cable connector assembly torsion, realizes the torsional test of high-speed cable connector assembly.The utility model can respectively realize torsion test, tension test, bending test, ensure that connector has good mechanical stability, reduces the procurement cost of test equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of connector testing equipment, specifically a mechanical performance testing machine. Background Technology

[0002] High-speed cable connector assemblies are components used in electronic devices to transmit electrical / optical signals, enabling data exchange. Industrial applications cover data centers, servers, automated control cabinets, industrial robots, CNC machine tools, and other fields, achieving device interconnection through standardized interfaces.

[0003] High-speed cable connectors are critical components for signal transmission in electronic devices, and their mechanical stability directly affects the reliability of the equipment. According to relevant standards and testing requirements, torque testing, tensile testing, and bending testing are important methods for evaluating connector reliability. However, current technologies require multiple devices to perform these tests, resulting in high equipment purchase costs. Utility Model Content

[0004] The purpose of this invention is to provide a mechanical property testing machine that can effectively solve the problems in the background art.

[0005] The technical solution to achieve the above objective is: a mechanical performance testing machine for performance testing of high-speed cable connector assemblies. During the testing of the high-speed I / O connector, both ends are respectively inserted into the high-speed I / O board end connector female sockets on two PCB circuit boards. At least one of the two PCB circuit boards is fixedly installed, and a series conductor is formed between the high-speed cable connector assembly and the high-speed I / O board end connector female sockets on the two PCB circuit boards. The characteristic feature is that the testing machine includes a base and a transient interruption tester, which is connected to both ends of the series conductor via wires; A gantry frame is fixed on the base, and a crossbeam for fixing and mounting the PCB circuit board is installed on the front of the gantry frame. A drive motor is installed inside the base, and the output end of the drive motor is connected to a positioning turntable that extends vertically upward from the base. A rotating rod is coaxially fixed to the top of the positioning turntable, and a bending lever is connected to the rotating rod. The bending lever is used to drive the cable of the high-speed cable connector assembly to twist, thereby realizing the torsional resistance test of the high-speed cable connector assembly.

[0006] Furthermore, one end of the bending lever is fixedly connected to the rotating rod, and the other end is rotatably mounted with a rotating wheel. The rotating wheel protrudes from the bending lever and is provided with an annular groove that matches the outer diameter of the cable of the high-speed cable connector assembly. The cable of the high-speed cable connector assembly is inclined forward and downward to pass through the annular groove of the rotating wheel, thereby realizing the bending resistance test of the high-speed cable connector assembly.

[0007] Furthermore, weights are suspended from the cables of the high-speed cable connector assembly connecting the two PCB boards to achieve tensile testing of the high-speed cable connector assembly.

[0008] Furthermore, the crossbeam is mounted on the portal frame by sliding up and down via a linear guide rail. A lead screw is rotatably mounted on the top center of the portal frame via a lead screw bearing. The upper end of the lead screw extends upward out of the portal frame and is connected to a handle. The lower end of the lead screw extends downward into the portal frame and is threadedly connected to a lead screw nut that is fixedly connected to the crossbeam.

[0009] Furthermore, the top of the positioning turntable is provided with a flange edge, and a ring of sensors arranged at equal intervals on the same circumference are connected to the flange edge. The circumference formed between the sensors is centered on the center of the positioning turntable. A proximity switch is installed on the base, which cooperates with the sensors in sequence during the rotation of the positioning turntable.

[0010] Furthermore, the testing machine also includes a control system, which includes a speed controller, a relay, a start button, a forward / reverse switch, and a counter. The input terminal of the forward / reverse switch is connected to the power supply, and the output terminal is connected to the input terminal of the relay through the speed controller. The output terminal of the relay is connected to the drive motor. The start button is connected to the control terminal of the relay. The proximity switch is connected to the counter, and the output terminal of the counter is connected to the control terminal of the relay.

[0011] The beneficial effects of this utility model are: This utility model can realize torque testing, tensile testing and bending testing respectively, ensuring that the connector has good mechanical stability and reducing the procurement cost of testing equipment. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present utility model; Figure 2 for Figure 1 Enlarged view of part A in the middle; Figure 3 for Figure 1 Enlarged view of part B in the middle; Figure 4 This is a schematic diagram of the internal structure of the base of this utility model; Figure 5 A schematic diagram showing the formation of a series conductor between the first pad, the second pad, and the high-speed cable connector assembly; Figure 6 This is a schematic diagram of the control principle of this utility model. Detailed Implementation

[0013] like Figure 1-6As shown, this utility model discloses a mechanical performance testing machine for performance testing of a high-speed I / O connector 14. The high-speed cable connector assembly 14 is an existing product that includes a cable and connector plugs connected to both ends of the cable.

[0014] The testing machine includes a base 1 with a hollow cavity, a gantry frame 2 fixed on the base 1, a crossbeam 5 installed on the front of the gantry frame 2, the crossbeam 5 being slidably mounted on the gantry frame 2 via a linear guide rail, a lead screw 7 being rotatably mounted on the top center of the gantry frame 2 via a lead screw bearing 6, the upper end of the lead screw 7 extending upwards out of the gantry frame 2 and connected to a handle 8, the lower end of the lead screw 7 extending downwards into the gantry frame 2 and threadedly connected to a lead screw nut 9 which is fixedly connected to the crossbeam 5.

[0015] A drive motor 15 is installed inside the base 1. The output end of the drive motor 15 is connected to a positioning turntable 16 that extends vertically upward from the base 1 and is fixedly connected to it. A rotating rod 17 is coaxially fixed to the top of the positioning turntable 16. A bending arm 18 is connected to the rotating rod 17. The bending arm 18 is used to drive the cable of the high-speed cable connector assembly 14 to twist, thereby realizing the torsional resistance test of the high-speed cable connector assembly.

[0016] One end of the bending lever 18 is fixedly connected to the rotating rod 17, and the other end is rotatably mounted with a rotating wheel 19. The rotating wheel 19 protrudes forward from the bending lever and is provided with an annular groove that matches the outer diameter of the cable of the high-speed cable connector assembly 14. The cable of the high-speed cable connector assembly 14 is inclined forward and downward to pass through the annular groove of the rotating wheel 19, thereby realizing the bending resistance test of the high-speed cable connector assembly 14.

[0017] The top of the positioning turntable 16 is provided with a flange edge 23, and a ring of sensing elements 24 arranged at equal intervals on the same circumference are connected to the flange edge 23. The circumference formed between the sensing elements 24 is centered on the center of the positioning turntable 16. A proximity switch 25 is installed on the base 1, which cooperates with the sensing elements 24 in sequence during the rotation of the positioning turntable 16 (the sensing elements and proximity switches are commercially available products, such as, but not limited to, inductive proximity switches, and the sensor is a metal bolt).

[0018] The testing machine also includes a control system, which includes a speed controller 26, a relay 27, a start button 28, a forward / reverse switch 29, and a counter 30. The speed controller 26, start button 28, forward / reverse switch 29, and counter 30 are respectively installed on the front of the base 1. The relay 26 is installed inside the base 1. The input terminal of the forward / reverse switch 29 is connected to the power supply, and the output terminal is connected to the input terminal of the relay 27 through the speed controller 36. The output terminal of the relay 27 is connected to the drive motor 15. The start button 28 is connected to the control terminal of the relay 27. The proximity switch 25 is connected to the counter 30, and the output terminal of the counter 30 is connected to the control terminal of the relay 27.

[0019] During testing, the high-speed cable connector assembly 14 is connected to the fixed-side PCB board 3 and the rotating-side PCB board 4 for testing. The fixed-side PCB board 3 is fixed on the crossbeam 5, and the rotating-side PCB board 4 is movably positioned below the rotating-side PCB board 4. The fixed-side PCB board 3 is connected to a first high-speed I / O board end connector female 11, and the rotating-side PCB board 4 is connected to a second high-speed I / O board end connector female 13. The fixed-side PCB board 3 is provided with a row of first pads 10. The number of pins at the input end of the first high-speed I / O board end connector female 11 is the same as the number of pins at the first pads 10, and they are soldered sequentially. The rotating-side PCB board 4 is provided with a row of second pads 12. The number of pins at the input end of the second high-speed I / O board end connector female 13 is the same as the number of pins at the second pads 12, and they are soldered sequentially.

[0020] One end of the high-speed cable connector assembly 14 is inserted into the first high-speed I / O board end connector female 11, and the other end is inserted into the second high-speed I / O board end connector female 13 on the rotating side PCB board 4.

[0021] like Figure 3 As shown, the number of first pads 10 and second pads 12 are the same and they are arranged sequentially from left to right. Counting from left to right, the first pads 10 located at even-numbered positions are all electrically connected to the adjacent second pad 10 on the right side via wires. Counting from left to right, the second pads 12 located at odd-numbered positions are all electrically connected to the adjacent second pad 12 on the right side via wires. This forms a series conductor 14 between the first pads 10, the second pads 12, and the high-speed I / O connector 14. The two ends of the series conductor 14 are electrically connected to the transient interruption tester 31 via wires.

[0022] During the tensile test, a weight 22 is suspended on the cable of the high-speed cable connector assembly 14 to achieve the tensile test of the high-speed cable connector assembly 14. Different weights of weight 22 can be hung according to the test requirements. When any pin of the high-speed cable connector assembly 14 is disconnected from the electrical connection, the momentary interruption tester 30 will send a signal.

[0023] During the bending test, the cable is tilted forward and downward to pass through the annular groove of the rotating wheel 19. When any pin of the high-speed I / O connector 14 loses electrical connection, the momentary interruption tester 30 will send a signal.

[0024] When the tilt angle α needs to be adjusted, turn the handle 8 to drive the lead screw 7 to rotate, thereby adjusting the height position of the high-speed cable connector assembly 14 connected to the first high-speed I / O board connector female 11, thus adjusting the forward tilt angle α of the cable of the high-speed cable connector assembly 14.

[0025] During the torsion test, the start button 28 is activated, the relay 26 is engaged, the drive motor 15 drives the rotating rod 17 to rotate the bending arm 18, and the bending arm 18 causes the cable of the high-speed cable connector assembly 14 to twist. When any pin of the high-speed cable connector assembly 14 loses electrical connection, the momentary interruption tester 30 sends a signal.

[0026] The torsion angle is determined by the number of times the proximity switch 25 senses the sensing element 24. Each time the proximity switch 25 senses a sensing element 24, the counter 30 counts once. When the set number of times is reached, the drive motor 15 is controlled to stop rotating. Specifically, if there are 12 sensing elements 24, the angle between two adjacent elements is 30°. When the cable of the high-speed cable connector assembly 14 needs to be tested with a torsion force of 90°, the proximity switch 25 will control the drive motor 15 to stop rotating when it senses the signal from the sensing element 24 three times.

Claims

1. A mechanical performance testing machine for performance testing of high-speed cable connector assemblies, wherein during the testing of the high-speed I / O connector, both ends are respectively inserted into the high-speed I / O board end connector female sockets on two PCB circuit boards, at least one of the two PCB circuit boards is fixedly installed, and a series conductor is formed between the high-speed cable connector assembly and the high-speed I / O board end connector female sockets on the two PCB circuit boards. Its features are: The testing machine includes a base and a transient interruption tester, which is connected to both ends of the series conductor via wires. A gantry frame is fixed on the base, and a crossbeam for fixing and mounting the PCB circuit board is installed on the front of the gantry frame. A drive motor is installed inside the base, and the output end of the drive motor is connected to a positioning turntable that extends vertically upward from the base. A rotating rod is coaxially fixed to the top of the positioning turntable, and a bending lever is connected to the rotating rod. The bending lever is used to drive the cable of the high-speed cable connector assembly to twist, thereby realizing the torsional resistance test of the high-speed cable connector assembly.

2. The mechanical property testing machine according to claim 1, characterized in that: One end of the bending lever is fixedly connected to the rotating rod, and the other end is rotatably mounted with a rotating wheel. The rotating wheel protrudes from the bending lever and is provided with an annular groove that matches the outer diameter of the cable of the high-speed cable connector assembly. The cable of the high-speed cable connector assembly is inclined forward and downward to pass through the annular groove of the rotating wheel, thereby realizing the bending resistance test of the high-speed cable connector assembly.

3. The mechanical property testing machine according to claim 1, characterized in that: Weights are also suspended on the cables of the high-speed cable connector assembly connected between two PCB boards to achieve tensile testing of the high-speed cable connector assembly.

4. The mechanical property testing machine according to claim 1, characterized in that: The crossbeam is mounted on the portal frame by sliding up and down via a linear guide rail. A lead screw is rotatably mounted on the top center of the portal frame via a lead screw bearing. The upper end of the lead screw extends upward out of the portal frame and is connected to a handle. The lower end of the lead screw extends downward into the portal frame and is threadedly connected to a lead screw nut that is fixedly connected to the crossbeam.

5. A mechanical property testing machine according to claim 1, characterized in that: The top of the positioning turntable is provided with a flange edge, and a ring of sensors arranged at equal intervals on the same circumference are connected to the flange edge. The circumference formed between the sensors is centered on the center of the positioning turntable. A proximity switch is installed on the base, which cooperates with the sensors in sequence during the rotation of the positioning turntable.

6. A mechanical property testing machine according to claim 5, characterized in that: The testing machine also includes a control system, which includes a speed controller, a relay, a start button, a forward / reverse switch, and a counter. The input terminal of the forward / reverse switch is connected to the power supply, and the output terminal is connected to the input terminal of the relay through the speed controller. The output terminal of the relay is connected to the drive motor. The start button is connected to the control terminal of the relay. The proximity switch is connected to the counter, and the output terminal of the counter is connected to the control terminal of the relay.

Images