Resistance testing device

Abstract

The utility model relates to a resistance testing device, which comprises a clamp assembly, a driving assembly and a power supply assembly, the clamp assembly comprises a first clamping block and a second clamping block which are oppositely arranged, and the driving assembly is located on one side of the clamp assembly to push the first clamping block and the second clamping block to be close to each other or away from each other. The power supply assembly is electrically connected with the clamp assembly so as to form an electric loop when a resistor to be detected is placed between the first clamping block and the second clamping block. The resistance testing device is simple in structure, easy to operate, high in automation degree, low in manual labor intensity and capable of better improving productivity.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance testing equipment, in particular to a resistance testing device. Background Art

[0002] As a basic electronic component, resistors are widely used in various electronic products. After the resistor products are produced, the resistance value of the resistor products is usually measured to detect the performance of the resistor products. Therefore, the resistance value test equipment for resistor products is more and more widely used. Most of the existing resistance measurement methods are that the measurement personnel connect the resistance tester to the battery module. The terminals of many electronic products are very small, and the precision is very high. The operation is complicated and inconvenient to detect.

[0003] A Chinese patent with publication number CN112763762A discloses a resistance detection device for microelectronic semiconductors, including a lateral adjustment mechanism, a detection unit, a guide column and a guide steel ball; by adjusting the resistance detection device, electronic semiconductors of different specifications can be pressed and fixed to improve the stability and accuracy during testing; the stability of the filling plate during the adjustment process is achieved by the guide column on the positioning plate and the guide steel ball embedded in the sliding plate.

[0004] However, when implementing the resistance testing device, the inventor discovered that the existing resistance value detection equipment has the following technical defects:

[0005] Resistance testing usually takes a certain amount of time. Usually, each resistance test takes 300-500ms, so the current resistance needs to be removed after the test is completed, and then the next resistance can be tested. When there are a large number of resistance tests, the test efficiency will be very low, the labor intensity of workers will be high, it will be time-consuming and laborious, the degree of automation will be low, and the production quality will be difficult to guarantee, which will seriously affect the production capacity. Utility Model Content

[0006] Based on this, the purpose of the utility model is to provide a resistance testing device.

[0007] A resistance testing device includes a fixture assembly, a drive assembly and a power supply assembly, wherein the fixture assembly includes a first clamp block and a second clamp block that are arranged opposite to each other, the drive assembly is located on one side of the fixture assembly to push the first clamp block and the second clamp block to move closer to or away from each other, and the power supply assembly is electrically connected to the fixture assembly to form an electrical circuit when a resistor to be tested is placed between the first clamp block and the second clamp block.

[0008] Compared with the prior art, the resistance testing device of the utility model cooperates the clamp assembly with the driving assembly, and as the driving assembly is pushed or retracted, the clamp assemblies are moved closer to or farther from each other. The resistance testing device of the utility model has a simple structure, is easy to operate, has a high degree of automation, has low manual labor intensity, and can better improve production capacity.

[0009] Furthermore, the fixture assembly also includes a first insulating block, a second insulating block, a first fixed seat, a second fixed seat, a sliding unit and a base; the first fixed seat and the second fixed seat are fixed on opposite sides of the base; the sliding unit slides between the first fixed seat and the second fixed seat; the first insulating block and the second insulating block are respectively arranged above the first fixed seat and the sliding unit, and the first clamping block and the second clamping block are respectively fixed above the first insulating block and the second insulating block; the driving assembly pushes the sliding unit to slide, so that the first clamping block and the second clamping block are close to or away from each other. It can play a better role in insulation, prevent the influence of the external conductive environment on the test, and improve the test accuracy.

[0010] Furthermore, the clamp assembly further comprises a first spring, one end of the first spring abuts against the second fixing seat, and the other end of the first spring abuts against the sliding unit. Since the first spring is retractable, it can meet the test of resistors of different sizes.

[0011] Furthermore, the driving assembly includes a servo motor, a motor mounting seat, a top block and a cam, the servo motor is fixed on the motor mounting seat, the cam is installed on the output shaft of the servo motor and rotates therewith, the top block can slide relative to the motor mounting seat, and one side of the top block is connected to the side surface of the cam, and the other end is abutted against the sliding unit, and the rotation of the cam pushes the sliding unit to slide between the first fixed seat and the second fixed seat.

[0012] Furthermore, the driving assembly further comprises a bearing, the bearing is axially connected to the top block, at least a part of the side surface of the bearing protrudes outside the top block and abuts against the side surface of the cam; when the cam rotates, the bearing is pushed to rotate together. The friction between the cam and the top block can be reduced, making the driving of the cam smoother, and the bearing can also withstand certain axial and radial loads, and has high strength and stability.

[0013] Furthermore, the cam is an eccentric wheel, and the cam rotates eccentrically following the rotation of the servo motor.

[0014] Furthermore, it also includes a rotating assembly, which is installed below the fixture assembly and drives the fixture assembly to rotate. Streamlined operation can be achieved, and the next resistance test can be performed without waiting for the previous resistance test to be completed and taken out, thus saving test time.

[0015] Furthermore, the rotating assembly includes a motor, a motor seat and a turntable. The motor seat is sleeved outside the motor, the turntable is installed on the output shaft of the motor, its disk surface is perpendicular to the output axis direction of the motor, and rotates with the output shaft of the motor, and the clamp assembly is installed on the disk surface of the turntable facing away from the motor.

[0016] Furthermore, the rotating component also includes a photoelectric seat, a photoelectric sensor, a transmitter and a baffle. The photoelectric seat is mounted on the motor. A groove is provided on the side of the photoelectric seat close to the driving component. The transmitter and the photoelectric sensor are relatively arranged on two side surfaces inside the groove. The baffle is installed on the disk surface of the turntable facing the motor and can pass through the groove.

[0017] Furthermore, the baffle is a non-light-transmitting plate, which can improve the sensitivity of the photoelectric sensor.

[0018] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the resistance testing device in the utility model;

[0020] Figure 2 It is a top view of the resistance testing device in the utility model;

[0021] Figure 3 It is a side view of the resistance testing device in the utility model;

[0022] Figure 4 It is a three-dimensional diagram of the clamp assembly in the utility model;

[0023] Figure 5 for Figure 3 A partial enlarged view of B;

[0024] Figure 6 for Figure 2 A partial enlarged view in FIG.

[0025] Figure 7 It is a partial cross-sectional view of the driving assembly in the utility model;

[0026] Figure 8 This is a front view of the resistance testing device in the utility model;

[0027] Fig. 9 for Figure 8 Front view of the power supply component. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0029] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0030] In this embodiment, the resistance testing device is disposed on a horizontal ground, with the direction perpendicular to the ground being the Z direction, and the two directions parallel to the ground and perpendicular to each other being the X direction and the Y direction respectively.

[0031] See also Figures 1 to 9 As shown, the resistance testing device includes a rotating assembly 1, a fixture assembly 2, a driving assembly 3, and a power supply assembly 4. The power supply assembly 4 is fixed on a horizontal ground and extends to the fixture assembly 2, and is used to supply power to the resistor when measuring the resistance. The rotating assembly 1 is arranged below the power supply assembly 4, the fixture assembly 2 is located above the rotating assembly 1 and rotates with the rotating assembly 1, the driving assembly 3 is arranged opposite to the fixture assembly 2, and is located on the side of the rotating assembly 1 away from the power supply assembly 4. The driving assembly 3 pushes the fixture assembly 2 to loosen or clamp the resistor placed therein, thereby realizing the test of the resistor.

[0032] Please refer to Figure 2 and Figure 3, the rotating assembly 1 is located below the clamp assembly 2, and the rotating assembly 1 includes a motor 11, a motor seat 12 and a turntable 13. The motor 11 is placed on the ground through a frame (not shown) to provide power, and its output shaft is axially parallel to the Z direction and extends toward the clamp assembly 2. In this embodiment, the motor 11 is a DD motor. The motor seat 12 is sleeved outside the motor 11 and mounted on the frame. The turntable 13 is fixedly connected to the output shaft of the motor 11 and rotates with the output shaft of the motor 11. In this embodiment, the turntable 13 is circular, and its disk surface is perpendicular to the output axis direction of the motor 11. Furthermore, the rotating assembly 1 also includes a photoelectric seat 14, a photoelectric sensor 15, a baffle 16 and a transmitter 17. The photoelectric seat 14 is fixed on the motor 11 or the motor seat 12, and the turntable 13 can rotate relative to it. The photoelectric seat 14 is located on the upper part of the motor seat 12, and a groove 141 is provided on the side of the photoelectric seat 14 close to the driving assembly 3. The transmitter 17 is installed on a side wall of the groove 141, and the photoelectric sensor 15 is installed on the same side wall of the groove 141 where the transmitter 17 is located. Since the structures of the photoelectric sensor 15 and the transmitter 17 are prior art, they are not described in detail here. The baffle 16 is installed on the side of the turntable 13 facing the motor 11. When the turntable 13 rotates, the baffle 16 rotates accordingly and can pass through the groove 141. When the baffle 16 is located in the groove 141, the light signal emitted by the emitter 17 is blocked by the baffle 16, and the photoelectric sensor 15 receives the signal change and drives the motor 11 to reset its origin, so that the turntable 13 starts a new round of rotation. The motor 11 resets its origin to ensure position accuracy, facilitates troubleshooting, prolongs its service life, and avoids damage to the equipment. Preferably, the baffle 16 is a non-translucent plate.

[0033] Continue to refer Figure 4 and Figure 5The clamp assembly 2 is evenly installed on the upper side of the turntable 13 along the circumference of the turntable 13, and the clamp assembly 2 includes a first clamp block 21A, a second clamp block 21B, a first insulating block 22A, a second insulating block 22B, a first fixed seat 23A, a second fixed seat 23B, a sliding unit 24 and a base 25. The base 25 is specifically a rectangular structure, and the base 25 is fixed to the upper side of the turntable 13 to support the entire clamp assembly 2. The first fixed seat 23A and the second fixed seat 23B are relatively arranged on two opposite sides of the upper part of the base 25. The sliding mechanism 24 slides between the first fixed seat 23A and the second fixed seat 23B, and includes a first sliding block 241 and a slide rail 242. The slide rail 242 is horizontally arranged between the first fixed seat 23A and the second fixed seat 23B. In this embodiment, the slide rail 242 extends radially along the turntable 13. The first sliding block 241 is engaged in the slide rail 242 and slides along the extension direction of the slide rail 242. Further, the clamp assembly 2 further includes a first push rod 26A, a second push rod 26B and a first spring 27. The first push rod 26A and the second push rod 26B are respectively fixed to opposite sides of the first sliding block 241 and move through the first fixed seat 23A and the second fixed seat 23B. The central axes of the first push rod 26A and the second push rod 26B overlap with each other and are parallel to the extension direction of the slide rail 242. One end of the first push rod 26A away from the first sliding block 241 extends out of the outside of the first fixed seat 23A. The first spring 27 is sleeved on the second push rod 26B, one end of which abuts against the second fixed seat 23B, and the other end abuts against the first sliding block 241. One end of the second push rod 26B away from the first sliding block 241 passes through the second fixed seat 23B and extends to the outside of the second fixed seat 23B. The first insulating block 22A is fixed to the top of the first fixing seat 23A, the second insulating block 22B is fixed to the top of the first sliding block 241 and can move therewith, the first clamping block 21A and the second clamping block 21B are fixed to the top of the first insulating block 22A and the second insulating block 22B respectively, and the insulating blocks of this design can play a good role in insulation, prevent the influence of the external conductive environment on the test, and improve the test accuracy. In this embodiment, the first clamping block 21A and the second clamping block 21B are made of conductive metal.

[0034] Specifically, Figure 6 and Figure 7As shown, the driving assembly 3 is fixed outside the turntable 13 and away from the power supply assembly 4. The driving assembly 3 includes a servo motor 31, a motor mounting seat 32, a cam 33, a third fixed seat 34, a second sliding block 35, a top block 36 and a bearing 37. The motor mounting seat 32 is fixed to one side above the motor seat 12. The servo motor 31 is mounted at the lower part of the motor mounting seat 32, and its output shaft is axially parallel to the Z direction, and extends upward along the Z axis direction and passes through the motor mounting seat 32. The cam 33 is located at the upper part of the motor mounting seat 32, and the cam 33 is mounted on the output shaft of the servo motor 31 and rotates therewith. The cam 33 is an eccentric wheel, and the output shaft of the servo motor 31 passes through the center of the cam 33, so that the cam 33 rotates eccentrically following the rotation of the servo motor 31. The third fixed seat 34 is fixedly mounted on the side of the motor mounting seat 32 close to the turntable 13. The second sliding block 35 is movably mounted on the motor mounting seat 32 and is located between the third fixed seat 34 and the cam 33, and can slide in a direction close to or away from the third fixed seat 34. The top block 36 is fixed above the second sliding block 35 and moves with the sliding of the second sliding block 35. The top block 36 is provided with a convex portion 361 directly opposite to the first top rod 26A, and can abut against an end of the first top rod 26A away from the first sliding block 241. The bearing 37 is axially connected to the top block 36 and arranged opposite to the convex portion 361. The axis of the bearing 37 is parallel to the Z-axis direction so as to rotate in a direction parallel to the Z-axis direction. At least a part of the side surface of the bearing 37 protrudes out of the top block 36 and abuts against the cam 33. When the cam 33 rotates, it drives the bearing 37 to rotate together and pushes the top block 36 away from or close to the clamp assembly 2. This clever design can reduce the friction between the cam 33 and the top block 36, making the driving of the cam 33 smoother, and the bearing 37 can also withstand certain axial and radial loads, and has high strength and stability. Furthermore, the drive assembly 3 also includes a second spring 38 and a positioning rod 39. The positioning rod 39 is installed on the side of the third fixed seat 34 facing the cam 33 and passes through the top block 36. Its axis is perpendicular to the axis of the cam 33 and parallel to the radial direction of the turntable 13, preferably, parallel to the extension direction of the slide rail 242; Figure 7As shown, in this embodiment, a mounting groove 362 with an opening toward the third fixing seat 34 is provided in the top block 36, the positioning rod 39 is inserted in the mounting groove 362, and the second spring 38 is sleeved outside the positioning rod 39, one end of which abuts against the groove surface of the mounting groove 361, and the other side abuts against the third fixing seat 34. When the servo motor 31 drives the cam 33 to rotate eccentrically, the cam 33 pushes the top block 36 to move along the radial direction of the turntable 13 toward the center direction of the turntable 13, and the convex portion 361 pushes the first sliding block 241 through the first top rod 26A, so that the first clamping block 21A and the second clamping block 21B are separated, and the second spring 38 is in a compressed state at this time. When the top block 36 returns, the elastic force of the second spring 38 is slowly released, which can prevent the top block 36 from moving too fast and hitting the cam 33, thereby realizing reciprocating motion.

[0035] Continue to refer Figure 8 and Fig. 9 The power supply assembly 4 is fixed on the ground, and the power supply assembly 4 includes a column 41, a beam 42 and an electric slip ring unit 43. The column 41 is vertically fixed to the ground, one end of the beam 42 is fixed to the column 41, and the other end extends toward the center of the turntable 13. The end of the beam 42 away from the column 41 is suspended with an electric slip ring unit 43 facing the turntable 13, and the electric slip ring unit 43 includes an electric slip ring body 431 and a positioning circular tube 432, and the positioning circular tube 432 extends from the beam 42 along the axial direction of the turntable 13 toward the center of the turntable 13. The electric slip ring body 431 is a cylindrical structure, and its central axis coincides with the central axis of the turntable 13. One end of the electric slip ring body 431 is in contact with the positioning circular tube 432, and the other end is fixed to the lower part of the beam 42, and the positioning circular tube 432 can play an insulating role. The electric slip ring body 431 is provided with a plurality of terminals (not marked), one end of one of the terminals is connected to an external power source, and the other end is connected to the first clamping block 21A, and one end of another terminal is connected to the second clamping block 21B, and the other end is connected to the external power source. When the resistor to be detected is placed between the first clamping block 21A and the second clamping block 21B, an electric circuit can be formed. When the turntable 13 rotates, the electric slip ring body 431 rotates with the turntable 13 and continuously provides power to the first clamping block 21A and the second clamping block 21B, thereby avoiding the problem of the electric wires being easily tangled when rotating when using conventional electric wires.

[0036] In this embodiment, the specific operation process is as follows: the rotating disk 13 is rotated so that the first push rod 26A is arranged opposite to the protrusion 361 . The servo motor 31 drives the top block 36 to push the first push rod 26A toward the center of the turntable 13, so that the first sliding block 241 moves toward the second fixed seat 23B, and then the first clamping block 21A and the second clamping block 21B move away from each other, and the resistor is placed between the first clamping block 21A and the second clamping block 21B by a suction nozzle or a robot. Then the servo motor 31 drives the top block 36 in the reverse direction to move it away from the turntable 13, and reverses to restore to the initial state. When the top block 36 returns to the original path, the first clamping block 21A and the second clamping block 21B approach each other under the action of the first spring 27, and the electrical measuring surfaces of the first clamping block 21A and the second clamping block 21B clamp the side of the resistor, thereby clamping the resistor; then the motor 11 drives the turntable 13 to rotate a predetermined angle, so that the first push rod 26A of the next resistor testing device is opposite to the protrusion 361, and the resistor on the next resistor testing device is tested. When the baffle 16 is located in the groove 141 , the light signal emitted by the emitter 17 is blocked by the baffle 16 , and the photoelectric sensor 15 receives the signal change and drives the motor 11 to reset its origin, so that the turntable 13 starts a new round of rotation.

[0037] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A resistance testing device, Features: The invention comprises a fixture assembly, a driving assembly and a power supply assembly, wherein the fixture assembly comprises a first clamp block and a second clamp block which are arranged opposite to each other, the driving assembly is located on one side of the fixture assembly to push the first clamp block and the second clamp block to move closer to or away from each other, and the power supply assembly is electrically connected to the fixture assembly respectively to form an electrical circuit when the resistor to be detected is placed between the first clamp block and the second clamp block.

2. The resistance testing device according to claim 1, Features: The clamp assembly further includes a first insulating block, a second insulating block, a first fixing seat, a second fixing seat, a sliding unit and a base; the first fixing seat and the second fixing seat are fixed on opposite sides of the base; the sliding unit slides between the first fixing seat and the second fixing seat; The first insulating block and the second insulating block are respectively arranged above the first fixed seat and the sliding unit, and the first clamping block and the second clamping block are respectively fixed above the first insulating block and the second insulating block; the driving component pushes the sliding unit to slide, so that the first clamping block and the second clamping block are close to or away from each other.

3. The resistance testing device according to claim 2, Features: The clamp assembly further includes a first spring, one end of which abuts against the second fixing seat, and the other end of which abuts against the sliding unit.

4. The resistance testing device according to claim 2, Features: The driving assembly includes a servo motor, a motor mounting seat, a top block and a cam, the servo motor is fixed on the motor mounting seat, the cam is installed on the output shaft of the servo motor and rotates therewith, the top block can slide relative to the motor mounting seat, and one side of the top block is connected to the side surface of the cam, and the other end is abutted against the sliding unit, and the rotation of the cam pushes the sliding unit to slide between the first fixed seat and the second fixed seat.

5. The resistance testing device according to claim 4, Features: The driving assembly also includes a bearing, which is axially connected to the top block. At least a portion of the side surface of the bearing protrudes outside the top block and abuts against the side surface of the cam. When the cam rotates, it pushes the bearing to rotate together.

6. The resistance testing device according to claim 4, Features: The cam is an eccentric wheel, and the cam rotates eccentrically following the rotation of the servo motor.

7. The resistance testing device according to claim 1, Features: It also includes a rotating assembly, which is installed below the clamp assembly and drives the clamp assembly to rotate.

8. The resistance testing device according to claim 7, Features: The rotating assembly includes a motor, a motor seat and a turntable; the motor seat is mounted outside the motor, the turntable is installed on the output shaft of the motor, its disk surface is perpendicular to the output axis direction of the motor, and rotates with the output shaft of the motor, and the clamp assembly is installed on the disk surface of the turntable facing away from the motor.

9. The resistance testing device according to claim 8, Features: The rotating component also includes a photoelectric seat, a photoelectric sensor, a transmitter and a baffle. The photoelectric seat is mounted on the motor. A groove is provided on the side of the photoelectric seat close to the driving component. The transmitter and the photoelectric sensor are arranged on two side surfaces inside the groove opposite to each other. The baffle is installed on the disk surface of the turntable facing the motor and can pass through the groove.

10. The resistance testing device according to claim 9, Features: The baffle is a non-light-transmitting plate.

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