Resistance testing device

Abstract

The utility model provides a resistance testing device which comprises a supporting rack and a lifting support which are arranged adjacently, the supporting rack is provided with an X-axis driving assembly, the output end of the X-axis driving assembly is provided with a Z-axis driving assembly, the output end of the Z-axis driving assembly is outwards connected with an extension frame, the extension frame is movably provided with a plugging terminal through a rotating assembly, and the Z-axis driving assembly is connected with the Z-axis driving assembly. A contact probe is arranged in the plugging terminal; a placing table and a positioning mechanism are arranged on the lifting support, and a profiling groove is formed in the surface of the placing table. The chip resistor testing device is simple in structure, reasonable in design and convenient to operate, a tester can conveniently replace matched plugging terminals according to chip resistors in different shapes so as to meet the testing requirements of products of different models, the angle of the plugging terminals relative to connecting terminals on the chip resistors can be adjusted, and the testing efficiency is improved. Therefore, the contact probe in the plugging terminal can smoothly correspond to the connecting terminal, so that the normal operation of the resistance test work is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of surface mount resistor testing technology, specifically, it demonstrates a resistor testing device. Background Technology

[0002] Surface mount resistors, also known as chip resistors, are a type of metal-glass enamel resistor. Due to their advantages such as resistance to moisture and high temperatures, small temperature coefficient, significant savings in circuit space and cost, and ability to enable more refined designs, they are widely used in high-end computers, industrial equipment, automatic control equipment, communication equipment, medical equipment, and high-tech multimedia electronic equipment. During production, surface mount resistors require resistance testing, necessitating the use of testing fixtures.

[0003] For example, Chinese patent CN217879425U discloses a chip resistor testing device, including a frame, a conveyor belt at the top of the frame, one end of the conveyor belt as a feeding end, the other end of the frame as a discharging end, a placement seat on the conveyor belt, a placement groove on the inner side of the placement seat, a pin seat at the top of the middle part of the frame, a test pin on the pin seat, a push plate on the side of the frame near the discharging end, and a storage box on the other side of the frame near the discharging end, with a storage groove on the storage box.

[0004] However, when the above-mentioned equipment is used for testing, if it is necessary to test the connection terminals of other surface mount resistors of different shapes, the equipment can only test one type of surface mount resistor because the spacing and position of the terminals of different shapes of surface mount resistors are different. The function is relatively simple and the applicability is not good. Utility Model Content

[0005] The purpose of this invention is to provide a resistance testing device that can adapt to the testing of surface mount resistors of different shapes.

[0006] The technical solution is as follows:

[0007] A resistance testing device includes a support frame and a lifting bracket arranged adjacent to each other. An X-axis drive assembly is provided on the support frame, and a Z-axis drive assembly is provided on the output end of the X-axis drive assembly. An extension frame is connected to the output end of the Z-axis drive assembly. A plug-in terminal is movably arranged on the extension frame via a rotating assembly, and a contact probe is provided inside the plug-in terminal. A placement stage and a positioning mechanism are provided on the lifting bracket. The centerline of the placement stage is on the same straight line as the centerline of the plug-in terminal, and a contour groove is formed on the surface of the placement stage.

[0008] Furthermore, the rotating assembly includes a rotary motor and a shaft. The rotary motor is vertically mounted on the extension frame, and its output end is connected downward to the drive wheel. The shaft is rotatably mounted on one side of the bottom end of the extension frame, and a driven wheel is mounted in the middle of the shaft. A synchronous belt drives the driven wheel and the drive wheel. The plug-in terminal is movably mounted on the lower part of the shaft via an adapter block.

[0009] In this way, the movable connection between the plug-in terminals and the adapter block allows testers to easily replace the plug-in terminals with the appropriate ones for different shaped surface mount resistors, thus meeting the testing requirements of different product models. Furthermore, the rotation of the shaft can be achieved through the combined action of the rotary motor, drive wheel, synchronous belt, and driven wheel, thereby adjusting the angle of the plug-in terminals relative to the connecting terminals on the surface mount resistor. This ensures that the contact probes inside the plug-in terminals can smoothly align with the connecting terminals, facilitating the normal operation of resistance testing.

[0010] Furthermore, a pressure sensor connects the bottom end of the shaft to the top end of the adapter block. This allows the pressure sensor to detect the pressure applied when the plug-in terminal contacts the surface mount resistor in real time, ensuring proper contact between the plug-in terminal and the connection terminal on the surface mount resistor and preventing damage to the resistor.

[0011] Furthermore, an optical fiber sensor is installed at the end of the extension frame, with the sensor's detection beam pointing vertically downwards. This allows the optical fiber sensor to detect in real-time the distance between the plug / unplug terminal and the surface-mount resistor on the placement platform, facilitating more accurate alignment of the plug / unplug terminal with the connecting terminals on the surface-mount resistor.

[0012] Furthermore, the positioning mechanism includes a pressure plate and upper and lower cylinders. The pressure plate is horizontally positioned above one side of the placement platform, and a crossbar is provided at the rear end of the pressure plate. The upper and lower cylinders are vertically positioned below the top of the lifting bracket, and the output ends of the upper and lower cylinders are connected upwards to the crossbar. In this way, the surface mount resistor is laid flat in the contour groove of the placement platform, and then the upper and lower cylinders are controlled to drive the pressure plate downwards towards one side of the surface mount resistor, thereby achieving a limiting and positioning effect on the surface mount resistor and ensuring stable testing.

[0013] Furthermore, a through notch is provided in the middle of the front end of the pressure plate. This through notch ensures that the connection between the plug-in terminals and the connection terminals on the surface mount resistor is not affected by the pressure plate, thus ensuring the normal operation of the connection process.

[0014] Furthermore, the X-axis drive assembly includes an X-axis lead screw drive, a horizontal plate, and a horizontal slider rail assembly. The horizontal plate is laterally movable on the support frame via the horizontal slider rail assembly. The X-axis lead screw drive is located at the top and bottom of the support frame along the length of the horizontal plate, and its output end is connected upward to the horizontal plate. The Z-axis drive assembly includes a Z-axis lead screw drive, a vertical plate, and a vertical slider rail assembly. The vertical plate is vertically mounted on the horizontal plate, and the Z-axis lead screw drive is located on the outside of the vertical plate along its height. The extension frame is vertically movable on the vertical plate via the vertical slider rail assembly, and the extension frame is also connected to the output end of the Z-axis lead screw drive. Thus, the X-axis lead screw drive controls the forward and backward movement of the horizontal plate relative to the support frame, and the Z-axis lead screw drive controls the up and down movement of the extension frame relative to the vertical plate, thereby realizing the forward and backward and up and down movements of the plug-in terminals, and thus enabling their docking with the surface mount resistors on the placement platform.

[0015] Compared with the prior art, the advantages of this utility model are as follows: it has a simple structure, reasonable design, and convenient operation; by fixing the chip resistor under test through the positioning mechanism and placement platform, it can prevent the chip resistor from shifting during the test and causing test errors; by setting movable plug-in terminals, it is convenient for testers to replace the appropriate plug-in terminals according to different shapes of chip resistors, thereby meeting the test requirements of different models of products; by setting the rotating component, the angle of the plug-in terminals relative to the connecting terminals on the chip resistor can be adjusted to ensure that the contact probes inside the plug-in terminals can smoothly align with the connecting terminals, thereby facilitating the normal operation of resistance testing. Attached Figure Description

[0016] Figure 1 This is a simplified structural diagram of a resistance testing device according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the rotating component part in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the placement platform and positioning mechanism in an embodiment of the present invention;

[0019] The following are the relevant markings in the attached diagram: 1-Support frame, 2-Lifting bracket, 10-X-axis drive assembly, 20-Z-axis drive assembly, 30-Extension frame, 40-Rotation assembly, 50-Plug-in terminal, 60-Placement platform, 70-Positioning mechanism; 110-X-axis lead screw drive, 120-Horizontal plate, 130-Horizontal slider rail assembly, 210-Z-axis lead screw drive, 220-Vertical plate, 230-Vertical slider rail assembly, 410-Rotary motor, 411-Drive wheel, 420-Shaft, 421-Driven wheel, 430-Synchronous belt, 440-Adapter block, 450-Pressure sensor, 460-Fiber optic sensor, 710-Pressure plate, 711-Horizontal bar, 712-Through notch, 720-Upper and lower cylinder components. Detailed Implementation

[0020] 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 protection scope of the present utility model.

[0021] This utility model provides a resistance testing device to solve the technical problems mentioned in the background art.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown. The resistance testing device includes a support frame 1 and a lifting bracket 2 arranged adjacent to each other in parallel. The height of the support frame 1 is higher than that of the lifting bracket 2. An X-axis drive assembly 10 is provided on the support frame 1. A Z-axis drive assembly 20 is provided on the output end of the X-axis drive assembly 10. The output end of the Z-axis drive assembly 20 is connected to a horizontal extension frame 30. A plug-in terminal 50 is movably arranged downward on the extension frame 30 through a rotating assembly 40. A contact probe is provided inside the plug-in terminal 50 and is connected to an external tester by wires. A placement platform 60 and a positioning mechanism 70 are provided on the lifting bracket 2. The surface of the placement platform 60 is formed with a contoured groove for placing the chip resistor to be tested. The center line of the placement platform 60 is on the same straight line as the center line of the plug-in terminal 50.

[0023] The surface mount resistor under test is fixed by a positioning mechanism and a placement stage. The X-axis and Z-axis drive components are set to bring the plug-in terminals close to the surface mount resistor under test. The movable plug-in terminals allow testers to easily replace the plug-in terminals with the appropriate ones according to the different shapes of surface mount resistors. The rotation component can be set to adjust the angle of the plug-in terminals relative to the connecting terminals on the surface mount resistor, ensuring that the contact probes inside the plug-in terminals can smoothly align with the connecting terminals.

[0024] In this embodiment, the X-axis drive assembly 10 includes an X-axis lead screw drive 110, a horizontal plate 120, and a horizontal slider rail assembly 130. The horizontal plate 120 is movably mounted on the support frame 1 via the horizontal slider rail assembly 130. The X-axis lead screw drive 110 is located at the top and bottom of the support frame 1 along the length of the horizontal plate 120, and its output end is connected upward to the horizontal plate 120. The Z-axis drive assembly 20 includes a Z-axis lead screw drive 210, a vertical plate 220, and a vertical slider rail assembly 230. The vertical plate 220 is vertically mounted on the horizontal plate 120, and the Z-axis lead screw drive 210 is located on the outside of the vertical plate 220 along the height of the vertical plate 220. The extension frame 30 is movably mounted on the vertical plate 20 via the vertical slider rail assembly 230, and the extension frame 30 is also connected to the output end of the Z-axis lead screw drive 210.

[0025] In this way, the X-axis lead screw drive 110 can control the forward and backward movement of the horizontal plate 120 relative to the support frame 1, and the Z-axis lead screw drive 210 can control the up and down movement of the extension frame 30 relative to the vertical plate 220, thereby realizing the forward and backward and up and down movement of the plug-in terminals, and thus realizing the docking work with the chip resistors on the placement platform.

[0026] In this embodiment, the rotating assembly 40 includes a rotating motor 410 and a shaft 420. The rotating motor 410 is vertically mounted on the extension frame 30, and the output end of the rotating motor 410 is connected downward to the drive wheel 411. The shaft 420 is rotatably mounted on one side of the bottom end of the extension frame 30, and a driven wheel 421 is provided in the middle of the shaft 420. A synchronous belt 430 is connected between the driven wheel 421 and the drive wheel 411. A plug-in terminal 50 is movably mounted on the lower part of the shaft 420 through an adapter block 440. Specifically, the plug-in terminal 50 and the adapter block 440 are detachably and movably installed by means of a screw connection.

[0027] Based on the above solution, the connection between the plug-in terminal and the adapter block is designed to be movable, which allows testers to easily replace the plug-in terminal with the appropriate one according to the shape of the surface mount resistor, thereby meeting the testing requirements of different product models. Furthermore, the rotation of the shaft can be achieved through the cooperation of the rotary motor, drive wheel, synchronous belt, and driven wheel, thereby adjusting the angle of the plug-in terminal relative to the connecting terminal on the surface mount resistor, ensuring that the contact probe inside the plug-in terminal can smoothly align with the connecting terminal, thus facilitating the normal operation of the resistance test.

[0028] The bottom end of the shaft 420 is connected to the top end of the adapter block 440 via a pressure sensor 450. This allows the pressure sensor to detect the pressure when the plug-in terminal contacts the surface mount resistor in real time, ensuring that the plug-in terminal properly aligns with the connection terminals on the surface mount resistor and preventing damage to the resistor.

[0029] The extension frame 30 is equipped with a fiber optic sensor 460 at its end, with the sensor beam pointing vertically downwards. This allows the fiber optic sensor to detect the distance between the plug-in terminal and the surface mount resistor on the placement platform in real time, facilitating more accurate connection between the plug-in terminal and the surface mount resistor's connection terminal.

[0030] In this embodiment, the positioning mechanism 70 includes a pressure plate 710 and upper and lower cylinder components 720. The pressure plate 710 is horizontally positioned above one side of the placement platform 50, and a crossbar 711 is provided at the rear end of the pressure plate 710. The upper and lower cylinder components 720 are vertically positioned below the top of the lifting bracket 2, and the output ends of the upper and lower cylinder components 720 are connected upward to the crossbar 711. In this way, the chip resistor is laid flat in the contour groove of the placement platform, and then the upper and lower cylinder components are controlled to drive the pressure plate downward toward one side of the chip resistor, so as to achieve the effect of limiting and positioning the chip resistor, ensuring the stable operation of the test.

[0031] The pressure plate 710 has a through notch 712 in the middle of its front end. The through notch ensures that the plug-in terminals are not affected by the pressure plate during the connection process between the plug-in terminals and the connection terminals on the chip resistor, thus ensuring the normal operation of the connection.

[0032] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. An electrical resistance testing device, characterized by, The utility model provides a kind of connector test equipment, including adjacent support frame and elevated support, X-axis drive component is provided on the support frame, Z-axis drive component is provided on the output end of X-axis drive component, the output end of Z-axis drive component is connected with a extension frame outward, plug-in terminal is movably arranged on the extension frame by rotating component, contact probe is arranged in the plug-in terminal;Positioning mechanism and placement table are arranged on the elevated support, the center line of placement table and the center line of plug-in terminal are on the same straight line, and profiled groove is formed on the surface of placement table.

2. The resistance testing device of claim 1, wherein, The rotating component includes a rotating motor and a shaft, the rotating motor is vertically arranged on the extension frame, and the output end of the rotating motor is connected with a driving wheel downward, the shaft is rotatably arranged at the bottom end of one side of the extension frame, and a driven wheel is arranged at the middle part of the shaft, a synchronous belt is transmissionally connected between the driving wheel and the driven wheel, and the lower part of the shaft is movably arranged with the plug-in terminal by an adapter block.

3. The resistance testing device of claim 2, wherein, The bottom end of the shaft is connected with the top end of the adapter block by a pressure sensor.

4. The resistance testing device of claim 2, wherein, The end of the extension frame is provided with an optical fiber sensor, and the detection light beam of the optical fiber sensor is vertically downward.

5. The resistance testing device of claim 1, wherein, The positioning mechanism includes a pressing plate and an up-down air cylinder, the pressing plate is horizontally arranged above one side of the placement table, and the rear end of the pressing plate is provided with a cross bar, the up-down air cylinder is vertically arranged below the top end of the elevated support, and the output end of the up-down air cylinder is connected to the cross bar upward.

6. The resistance testing device of claim 5, wherein, A through slot is formed in the middle of the front end of the pressing plate.

7. The resistance testing device of claim 1, wherein, The X-axis drive component includes an X-axis screw rod drive, a horizontal plate and a horizontal sliding block sliding rail assembly, the horizontal plate is movably arranged on the support frame by the horizontal sliding block sliding rail assembly, and the X-axis screw rod drive is arranged at the top or bottom end of the support frame along the length direction of the horizontal plate, and the output end of the X-axis screw rod drive is connected to the horizontal plate upward;The Z-axis drive component includes a Z-axis screw rod drive, a vertical plate and a vertical sliding block sliding rail assembly, the vertical plate is vertically arranged on the horizontal plate, and the Z-axis screw rod drive is arranged outside the vertical plate along the height direction of the vertical plate, the extension frame is movably arranged on the vertical plate by the vertical sliding block sliding rail assembly, and the extension frame is also connected to the output end of the Z-axis screw rod drive.

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