Chip resistor test fixture

Abstract

The utility model discloses a chip resistor test fixture, which comprises a main body, an air suction opening arranged on the main body, an air suction hole arranged above the air suction opening, a clamping device arranged above the air suction hole, a back-and-forth moving module arranged on the outer side of the clamping device, and a tester moving device arranged above the back-and-forth moving module, a support is installed behind the tester moving device, and a camera module is installed on the support. According to the chip resistor test fixture, the suction opening is matched with the suction hole to remove dust, the test environment is purified, errors are reduced, the quality is improved, and cost and efficiency are reduced. The front-back moving module drives the clamping device to move flexibly, so that the multi-element test requirements are met, and the efficiency is improved. And the tester moving device is driven by a motor to be accurately positioned, so that high-precision butt joint with the chip resistor is realized. The clamping device stably clamps the resistors of different sizes, damage is avoided, and the test success rate and the yield are improved.

Description

Technical Field

[0001] This utility model relates to the field of chip resistor testing technology, specifically a chip resistor testing fixture. Background Technology

[0002] In today's rapidly developing era of intelligent and integrated electronic information, surface mount resistors, with their advantages of small size, light weight, and ease of automated production, are widely used in consumer electronics, communication equipment, automotive electronics, aerospace, and many other fields, becoming an indispensable basic electronic component in modern electronic products. Their quality and performance not only directly affect the functionality of individual electronic components but also play a decisive role in the stability, reliability, and lifespan of the entire electronic product, making them key to ensuring product quality.

[0003] In the performance testing of surface mount resistors, the traditional manual adjustment method of tightening bolts requires manually tightening or loosening the bolts according to different test requirements, and adjusting the parameters of the testing equipment one by one. The entire operation is complicated and involves many steps, requiring operators to have certain technical experience and operational proficiency, and is also prone to parameter setting deviations due to human error. When facing the test of surface mount resistors of different sizes and specifications, operators need to readjust the equipment completely, from the tightness of the bolts to the parameter settings of the testing instrument, all of which require meticulous adjustment. This process often consumes a lot of time and effort, significantly extending the cycle of a single test.

[0004] Furthermore, environmental factors also play a significant role in the testing of surface mount resistors. Tiny dust particles on the surface mount resistor surface, as well as dust suspended in the air, can potentially interfere with the accuracy of the test when the probes contact the resistor. These dust particles may adhere to the resistor surface or the probe contact points, increasing the contact resistance between the points, affecting the normal transmission of electrical signals, and causing deviations or even errors in the test results. Especially when testing high-precision surface mount resistors, this contact problem caused by dust interference can lead to misjudgments, classifying a qualified product as unqualified, or allowing products with potential quality problems to pass. Utility Model Content

[0005] The purpose of this invention is to provide a surface mount resistor testing fixture to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a surface mount resistor testing fixture, comprising a main body, an exhaust port mounted on the main body, an air suction hole above the exhaust port, a clamping device mounted above the air suction hole, a front-to-back moving module mounted on the outside of the clamping device, a tester moving device mounted above the front-to-back moving module, a bracket mounted behind the tester moving device, and a camera module mounted on the bracket.

[0007] Preferably, the air assembly in the exhaust vent draws in air through the suction hole and discharges it from the exhaust vent, thereby removing dust from the top of the main body.

[0008] Preferably, the forward and backward movement module includes a drive motor, a protective shell is installed in front of the drive motor, a rotating shaft is installed inside the protective shell, a first slider is installed on the rotating shaft, and a connecting plate is installed above the first slider.

[0009] Preferably, the moving device of the tester includes a connecting base plate, a support column is installed above the connecting base plate, a guide rail is provided on the support column, a second slider is installed on the guide rail, a connecting block is installed below the second slider, a tester is installed below the connecting block, a shaft is installed on the second slider, and a motor is installed at one end of the shaft.

[0010] Preferably, the clamping device includes a cylinder, a housing is installed in front of the cylinder, a clamping plate is installed on the housing, a sliding groove is installed on the clamping plate, a left and right sliding plate is installed behind the sliding groove, a lead screw is installed on the left and right sliding plate, and a servo motor is installed on the left side of the lead screw.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This surface mount resistor testing fixture features a combined exhaust and suction port that efficiently removes dust from the top of the main body, ensuring a clean testing environment, reducing testing errors, improving testing quality, extending fixture lifespan, and lowering maintenance costs. The forward and backward movement module, powered by a drive motor and rotating shaft, allows the clamping device to move flexibly forward and backward, meeting diverse testing needs and significantly improving testing efficiency. The tester's moving device, connected to the base plate and guide rails, precisely adjusts the tester's position under the drive of the shaft and motor, ensuring accurate alignment with the surface mount resistors for high-precision testing, providing strong support for product quality control. The clamping device, composed of a cylinder and lead screw, can stably clamp surface mount resistors of different sizes, ensuring stable and accurate clamping, preventing resistor damage, and improving test success rate and product yield. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a cross-sectional view of the structure of this utility model.

[0015] Figure 3 This is a cross-sectional view of the structure of this utility model.

[0016] Figure 4 This is a cross-sectional view of the structure of this utility model.

[0017] In the diagram: 1. Main body; 2. Exhaust vent; 3. Suction hole; 4. Clamping device; 5. Forward and backward moving module; 6. Tester moving device; 7. Bracket; 8. Camera module; 9. Drive motor; 10. Protective shell; 11. Rotating shaft; 12. Slider No. 1; 13. Connecting plate; 14. Connecting base plate; 15. Support column; 16. Guide rail; 17. Shaft; 18. Slider No. 2; 19. Connecting block; 20. Tester; 21. Motor; 22. Cylinder; 23. Shell; 24. Clamping plate; 25. Slide groove; 26. Left and right moving plate; 27. Lead screw; 28. Servo motor. Detailed Implementation

[0018] 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.

[0019] Example: Please refer to Figure 1 This utility model provides a technical solution: a surface mount resistor testing fixture, including a main body 1, an exhaust port 2 installed on the main body 1, an air suction hole 3 provided above the exhaust port 2, a clamping device 4 installed above the air suction hole 3, a front-to-back moving module 5 installed on the outside of the clamping device 4, a tester moving device 6 installed above the front-to-back moving module 5, a bracket 7 installed behind the tester moving device 6, and a camera module 8 installed on the bracket 7.

[0020] The air intake vent 2 draws in air through the suction hole 3 and discharges it from the exhaust vent 2, thereby removing the dust above the main body 1.

[0021] In this embodiment, the air intake unit rapidly draws in air through the suction port, entraining dust, impurities, and other contaminants floating above the main body, which are then discharged from the exhaust port. This effectively ensures a clean testing environment, reduces testing errors caused by impurities, and prevents dust from entering the fixture and wearing down precision components, thereby improving testing quality, extending the fixture's lifespan, and reducing maintenance costs.

[0022] The forward and backward movement module 5 includes a drive motor 9, a protective shell 10 is installed in front of the drive motor 9, a rotating shaft 11 is installed inside the protective shell 10, a first slider 12 is installed on the rotating shaft 11, and a connecting plate 13 is installed above the first slider 12.

[0023] In this embodiment, the tester's moving device can move flexibly in the front-back direction according to the placement position of the surface mount resistors. In large-scale surface mount resistor testing operations, the placement positions of resistors of different batches and specifications may vary. The back-back movement function of this fixture can quickly adapt to these variations, eliminating the need for frequent manual adjustments to the overall position of the fixture. This greatly reduces test preparation time, meets diverse testing needs, and significantly improves testing efficiency.

[0024] The tester moving device 6 includes a connecting base plate 14, a support column 15 mounted above the connecting base plate 14, a guide rail 16 mounted on the support column 15, a second slider 18 mounted on the guide rail 16, a connecting block 19 mounted below the second slider 18, a tester 20 mounted below the connecting block 19, a shaft 17 mounted on the second slider 18, and a motor 21 mounted at one end of the shaft 17.

[0025] In this embodiment, the second slider can slide precisely along the guide rail under the drive of the shaft and motor. During the testing process, different models of surface mount resistors have different sizes and lead spacings, and the tester needs to be accurately aligned with the test points of the resistors. This device can precisely adjust the position of the tester to ensure accurate alignment between the tester and the surface mount resistors, effectively avoiding inaccurate test data caused by tester position deviation.

[0026] The clamping device 4 includes a cylinder 22, a housing 23 is installed in front of the cylinder 22, a clamping plate 24 is installed on the housing 23, a sliding groove 25 is installed on the clamping plate 24, a left and right moving plate 26 is installed behind the sliding groove 25, a lead screw 27 is installed on the left and right moving plate 26, and a servo motor 28 is installed on the left side of the lead screw 27.

[0027] In this embodiment, stable clamping of surface mount resistors of different sizes can be achieved. In actual operation, some surface mount resistors are small in size and fragile in texture. Ordinary clamping methods can easily cause damage or displacement of the resistors. However, this clamping device can provide precise control and stable clamping force through information provided by the camera module, ensuring a smooth and accurate clamping process. This avoids scratches, deformation, and other damage to the surface mount resistors during clamping, thereby improving the test success rate and product yield, and reducing economic losses caused by product damage.

[0028] Working Principle: In actual operation, the surface mount resistor is first placed in the upper area of ​​the main body 1. At this time, the exhaust port 2 and the suction port 3 form a highly efficient dust collection system. Working closely together, they utilize the principle of negative air pressure to quickly and effectively remove dust, impurities, and other tiny particles adhering to the surface of the surface mount resistor and its surroundings, creating a clean environment for subsequent operations. Next, the clamping device 4 begins to function. First, the camera module 8 comprehensively scans the dimensions of the surface mount resistor, including its length, width, height, and pin spacing, acquiring precise image data which is then transmitted to the control system for analysis and processing. Next, cylinder 22, following instructions from the control system, provides stable thrust, slowly pushing the clamping plate inward to adjust its initial position. Then, servo motor 28 starts operating, driving lead screw 27 to rotate with high precision. Due to the unique transmission relationship between lead screw 27 and the left and right moving plates 26, the rotation of lead screw 27 drives the left and right moving plates 26 to move. The opposite thread arrangement on the left and right moving plates 26 allows them to move inward together during the movement. Finally, driven by the left and right moving plates 26, clamping plate 24 firmly clamps the surface mount resistor, ensuring sufficient stability without damaging it due to excessive force. After clamping is complete, the testing phase officially begins. The rotation of the rotating shaft 11 drives the first slider 12, which is connected to the tester moving device 6 via the connecting plate 19, thus enabling the tester moving device 6 to move smoothly in the front-back direction. Subsequently, driven by the motor 21, the shaft 17 of the tester 20 begins to rotate, which drives the second slider 18 to move flexibly in the left-right direction along the guide rail 16. After this series of front-back and left-right displacement operations, the tester 20 is finally accurately brought to the preset test position of the chip resistor, and then begins to conduct comprehensive and detailed tests on various electrical performance indicators of the chip resistor, such as resistance and tolerance. The entire process is rigorous and orderly, ensuring the accuracy and reliability of the test results.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface mount resistor testing fixture, comprising a main body (1), characterized in that: The main body (1) is equipped with an exhaust port (2), and an air suction hole (3) is provided above the exhaust port (2). A clamping device (4) is installed above the air suction hole (3). A front-to-back moving module (5) is installed on the outside of the clamping device (4). A tester moving device (6) is installed above the front-to-back moving module (5). A bracket (7) is installed behind the tester moving device (6). A camera module (8) is installed on the bracket (7).

2. The surface mount resistance testing fixture according to claim 1, characterized in that: The air intake (2) draws in air through the air intake hole (3) and discharges it from the air intake (2).

3. The surface mount resistor testing fixture according to claim 1, characterized in that: The forward and backward moving module (5) includes a drive motor (9), a protective shell (10) is installed in front of the drive motor (9), a rotating shaft (11) is installed inside the protective shell (10), a first slider (12) is installed on the rotating shaft (11), and a connecting plate (13) is installed above the first slider (12).

4. The surface mount resistor testing fixture according to claim 1, characterized in that: The moving device (6) of the tester includes a connecting base plate (14), a support column (15) is installed above the connecting base plate (14), a guide rail (16) is provided on the support column (15), a second slider (18) is installed on the guide rail (16), a connecting block (19) is installed below the second slider (18), a tester (20) is installed below the connecting block (19), a shaft (17) is installed on the second slider (18), and a motor (21) is installed at one end of the shaft (17).

5. A surface mount resistor testing fixture according to claim 1, characterized in that: The clamping device (4) includes a cylinder (22), a housing (23) is installed in front of the cylinder (22), a clamping plate (24) is installed on the housing (23), a sliding groove (25) is installed on the clamping plate (24), a left and right sliding plate (26) is installed behind the sliding groove (25), a lead screw (27) is installed on the left and right sliding plate (26), and a servo motor (28) is installed on the left side of the lead screw (27).

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