A fixture for testing pin products

Abstract

The utility model discloses a kind of clamps for pin product test, including fixed base, hollow is formed test station in fixed base middle part, mobile cross bridge is slidably connected with the top of fixed base in test station, the upper end surface of one side of fixed base is flush with the upper end surface of mobile cross bridge, for placing pin product ontology, a plurality of light transmission holes one are set on mobile cross bridge along its length direction interval, the side of fixed base and mobile cross bridge upper end surface alignment, along its length direction interval a plurality of light transmission holes two are set, light transmission hole one and light transmission hole two parallel arrangement, and position each other corresponds, fixed needle corresponding with light transmission hole two is equipped on fixed base, fixed needle corresponding with light transmission hole one is equipped on mobile cross bridge, the utility model can adjust the position of mobile cross bridge on fixed base according to the size of pin product ontology, to adapt to different specifications of product.

Description

Technical Field

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

[0002] In current electronic device manufacturing processes, especially in the production of precision components such as integrated circuit chips, pins, as key structures for achieving electrical connections, have their processing and testing accuracy directly impacting product performance and reliability. During manufacturing, pins are typically processed as independent components: conductive metal material is first cut into strips, and then stamped into the required pin shape using a punch press. To facilitate transportation and subsequent production, some connecting material (process waste) is usually retained during stamping, temporarily keeping the pins connected as a strip-shaped product. After stamping, the pin product must undergo a testing process to ensure its dimensional accuracy, geometric tolerances, and electrical performance meet design requirements. Therefore, fixtures must be used to hold the product to ensure the accuracy of the testing process.

[0003] However, existing conventional pin product clamps generally adopt a single-sided clamping method, that is, clamping force is applied only from one side of the product. This clamping method has several drawbacks: 1. Insufficient support leads to deformation: Since the clamping only acts on one side, the other side of the product lacks effective support. Under the action of clamping force, the product is prone to "head-down" phenomenon, that is, the unsupported side bends downward, causing the overall deformation of the product, which in turn leads to measurement errors and affects the accuracy of the test results.

[0004] 2. Lack of positioning reference, making alignment difficult: The fixture does not have a clear positioning reference surface or limiting structure, which makes it impossible to accurately align the product during clamping. The reference surface is prone to displacement, which further reduces the consistency and repeatability of the inspection.

[0005] 3. Limited applicability and difficulty in compatibility with small-sized products: This type of fixture is mainly designed for large-sized pin products. When used to clamp small-sized products, the reference edge of the product will be blocked by the fixture, preventing light from passing through. This makes it impossible to determine whether the placement of the pin product is accurate, resulting in detection errors. Utility Model Content

[0006] The purpose of this invention is to provide a fixture for testing pin products, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A fixture for testing pin products includes a fixed base with a hollowed-out testing station in the center. A movable cross bridge is slidably connected above the testing station on the fixed base. The upper surface of one side of the fixed base is flush with the upper surface of the movable cross bridge for placing the pin product body. A plurality of light-transmitting holes I are spaced apart along the length of the movable cross bridge. A plurality of light-transmitting holes II are spaced apart along the length of the side of the fixed base that is flush with the upper surface of the movable cross bridge. The light-transmitting holes I and II are arranged in parallel and their positions correspond to each other. The fixed base is provided with fixing pins corresponding to the light-transmitting holes II, and the movable cross bridge is provided with fixing pins corresponding to the light-transmitting holes I.

[0008] Furthermore, one end of the fixed base is provided with a guide rail groove, and the other end is provided with a clearance groove. One end of the movable cross bridge is provided with a limiting part one that inserts into the guide rail groove, and the other end is provided with a limiting part two that extends into the clearance groove. The inner wall of the limiting part two contacts the outer wall of the clearance groove.

[0009] Furthermore, a threaded through hole is provided on one side of the limiting part two, and a locking screw is threadedly connected to the threaded through hole.

[0010] Furthermore, at least two counterweights are placed on the upper surface of the fixed base.

[0011] Furthermore, the counterweight is a magnet, and the fixed base is made of a metal material that allows the magnet to attract it, so that the counterweight can be magnetically attached to the fixed base.

[0012] Furthermore, the clearance groove is provided below the limiting part two, and the limiting groove is designed in an inverted "T" shape. The lower part of the limiting part two extends into the limiting groove and has an extension at the end, which is adapted to the limiting groove.

[0013] Furthermore, a fixing groove is provided on the side of the clearance groove away from the limiting groove. The fixing groove has two threaded holes, and a scale is placed on the fixing groove. The scale has two locking holes, which are respectively connected to the corresponding threaded holes. Bolts are provided on the two locking holes, and the threaded ends of the bolts are threadedly connected to the threaded holes. The limiting part two is located on one side of the scale and has a pointed tip, which is aligned with the scale on the scale.

[0014] The beneficial effects of this utility model are: This invention features a movable cross bridge slidably connected above a fixed base at the testing station. The upper surface of the fixed base is flush with the upper surface of the movable cross bridge, forming a bearing surface that stably holds the pin product and supports both sides of the pin product, preventing bending and deformation due to unilateral force and ensuring the product remains flat during testing. Furthermore, the movable cross bridge can be adjusted in position on the fixed base according to the size of the pin product to be tested, thus adapting to products of different specifications and improving the versatility of the fixture.

[0015] After the pin product body of this utility model is stamped, its two side edges are provided with equidistantly arranged positioning holes. A number of light-transmitting holes (I) are spaced apart along the length of the movable cross bridge, while a number of light-transmitting holes (II) are spaced apart along the length of the side of the fixed base aligned with the upper surface of the movable cross bridge. The light-transmitting holes (I) and (II) are arranged parallel to each other and their positions correspond to each other. The fixed base is provided with fixing pins corresponding to the light-transmitting holes (II), and the movable cross bridge is provided with fixing pins corresponding to the light-transmitting holes (I). During testing, the pin product body is placed on the bearing surface composed of the fixed base and the movable cross bridge, so that the positioning holes on both sides of the pin product body are respectively fitted into the fixing pins, realizing the positioning and fixing of the product. At this time, the positioning holes not occupied by the fixing pins correspond to the light-transmitting holes (I) and (II), forming a through light-transmitting channel. The light-transmitting channel can serve as a reference mark for the vision system, allowing light to pass through for identification by the detection camera or optical sensor, used to calibrate the coordinate system of the detection equipment, and improve positioning accuracy and test repeatability. The fixing pins located on the fixed base can serve as a reference for placing the pin product body, ensuring the repeatability and consistency of the test.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] Figure 1 : Overall structural diagram of this utility model.

[0018] Figure 2 : Exploded view of the movable cross bridge of this utility model.

[0019] Figure 3 : A diagram showing the usage state of this utility model.

[0020] Figure 4 : Overall structural diagram of another embodiment of this utility model.

[0021] Figure 5 : An exploded view of another embodiment of this utility model.

[0022] Figure 6 : Figure 5 Enlarged view of the structure of part A.

[0023] Reference numerals: 1. Fixed base; 2. Test station; 3. Moving cross bridge; 4. Pin product body; 5. Fixing pin; 6. Counterweight; 11. Second light-transmitting hole; 12. Guide rail groove; 13. Clearance groove; 14. Fixing groove; 15. Threaded hole; 16. Scale; 17. Locking hole; 18. Bolt; 19. Limiting groove; 31. First light-transmitting hole; 32. First limiting part; 33. Second limiting part; 34. Threaded through hole; 35. Locking screw; 36. Extension part; 37. Pointed tip; 41. Positioning hole. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Please refer to Figure 1-6 ; A fixture for testing pin products includes a fixed base 1 with a hollowed-out testing station 2 in the center. The testing station 2 provides space for the test component to pass through during testing, facilitating electrical performance or appearance inspection of the pin product. A movable crossbridge 3 is slidably connected above the fixed base 1 and the testing station 2. The upper surface of the fixed base 1 is flush with the upper surface of the movable crossbridge 3, forming a bearing surface for stably placing the pin product body 4 and supporting both sides of the pin product body 4 to prevent bending deformation due to unilateral force, ensuring the product remains flat during testing. Furthermore, the movable crossbridge 3 can be adjusted in position on the fixed base 1 according to the size of the pin product body 4 to be tested, thus adapting to different specifications and improving the fixture's versatility. It should be noted that after stamping, the pin product body 4 has equidistantly arranged positioning holes 41 on both sides of its edges. The movable cross bridge 3 has several light-transmitting holes 31 spaced along its length. On the side of the fixed base 1 aligned with the upper surface of the movable cross bridge 3, several light-transmitting holes 11 are also spaced along its length. The light-transmitting holes 31 and 11 are arranged parallel to each other and their positions correspond. The fixed base 1 has fixing pins 5 corresponding to the light-transmitting holes 11, and the movable cross bridge 3 has fixing pins 5 corresponding to the light-transmitting holes 31. During testing, the pin product body 4 is placed on the bearing surface formed by the fixed base 1 and the movable cross bridge 3. The positioning holes 41 on both sides of the pin product body 4 are respectively inserted into the fixing pins 5 to achieve product positioning and fixation. At this time, the positioning holes 41 not occupied by the fixing pins 5 correspond to the light-transmitting holes 31 and 11, forming a through light-transmitting channel. This light-transmitting channel can serve as a reference mark for the vision system, allowing light to pass through for identification by the inspection camera or optical sensor. It is used to calibrate the coordinate system of the inspection equipment, improving positioning accuracy and test repeatability. The fixing pin 5 located on the fixed base 1 can serve as a reference for the placement of the pin product body 4, ensuring the repeatability and consistency of the test.

[0026] In this embodiment, one end of the fixed base 1 is provided with a guide rail groove 12, and the other end is provided with a clearance groove 13. One end of the movable cross bridge 3 is provided with a limiting part 32 that inserts into the guide rail groove 12, and the other end is provided with a limiting part 33 that extends into the clearance groove 13. The inner wall of the limiting part 33 contacts the outer wall of the clearance groove 13, thereby forming a guiding and limiting structure to prevent the movable cross bridge 3 from deflecting during movement.

[0027] In this embodiment, a threaded through hole 34 is provided on one side of the limiting part 33, and a locking screw 35 is threadedly connected to the threaded through hole 34. After the movable cross bridge 3 is adjusted to the required position, the locking screw 35 is rotated so that its end abuts against the outer wall of the relief groove 13, thereby applying an axial clamping force. This clamping force forms a friction constraint between the movable cross bridge 3 and the outer wall of the relief groove 13, preventing the movable cross bridge 3 from displacing during the test and ensuring the stability during the test.

[0028] In this embodiment, at least two counterweights 6 are placed on the upper surface of the fixed base 1. When the pin product body 4 is placed on the fixed base 1 and the movable cross bridge 3, the counterweights 6 are placed on both sides above the pin product body 4, pressing them firmly against the upper surface of the pin product body 4. This applies a downward pressing force to the pin product body 4, preventing the pin product from locally lifting due to vibration or contact with the detection probe during testing. Furthermore, the counterweights 6 are magnets, and the fixed base 1 is made of a metal material that allows magnets to adhere. Through magnetic force, the counterweights 6 can be adhered to the fixed base 1, ensuring a firming effect on the product.

[0029] In another embodiment, the clearance groove 13 is provided with a limiting groove 19 directly below the limiting part 33. The limiting groove 19 has an inverted "T" shape design. The lower part of the limiting part 33 extends into the limiting groove 19, and an extension part 36 is provided at the end. The extension part 36 is adapted to the limiting groove 19. The cooperation between the limiting groove 19 and the extension part 36 vertically limits the movable cross bridge 3, preventing it from coming off in the vertical direction.

[0030] A fixing groove 14 is provided on the side of the clearance groove 13 away from the limiting groove 19. The fixing groove 14 has two threaded holes 15, and a scale 16 is placed on the fixing groove 14. The scale 16 has two locking holes 17, which are connected to their corresponding threaded holes 15. Bolts 18 are provided on the two locking holes 17, and the threaded ends of the bolts 18 are threadedly connected to the threaded holes 15, thereby fixing the scale 16 on the fixing groove 14 and ensuring the stability of the scale 16 during use, preventing it from loosening or shifting. A limiting part 33 is located on one side of the scale 16 and has a pointed tip 37, which is aligned with the scale on the scale 16. When adjusting the position of the moving crossbridge 3, the operator can observe the scale value indicated by the pointed tip 37 and read its position relative to the fixing pin 5 on the fixed base 1, thus enabling quick adjustment of the position of the moving crossbridge 3 according to different pin specifications. It should be noted that the fixing pin 5 set on the fixed base 1 in this application is not aligned with the zero mark of the scale 16. Therefore, before adjusting the position, the operator needs to measure or know the reference offset between the fixing pin 5 and the zero point of the scale 16 in advance, and take this offset into the calculation during the actual adjustment to ensure the accuracy of the final positioning of the moving cross bridge 3.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A fixture for testing pin products, comprising a fixed base (1), characterized in that, The fixed base (1) has a hollowed-out center to form a test station (2). The fixed base (1) is slidably connected to a movable cross bridge (3) above the test station (2). The upper surface of one side of the fixed base (1) is flush with the upper surface of the movable cross bridge (3) for placing the pin product body (4). The movable cross bridge (3) has several light-transmitting holes (31) spaced along its length. On the side of the fixed base (1) that is flush with the upper surface of the movable cross bridge (3), several light-transmitting holes (11) are spaced along its length. The light-transmitting holes (31) and the light-transmitting holes (11) are arranged in parallel and their positions correspond to each other. The fixed base (1) is provided with a fixing pin (5) corresponding to the light-transmitting hole (11). The movable cross bridge (3) is provided with a fixing pin (5) corresponding to the light-transmitting hole (31).

2. The fixture for testing pin products according to claim 1, characterized in that, One end of the fixed base (1) is provided with a guide rail groove (12) and the other end is provided with a clearance groove (13). One end of the movable cross bridge (3) is provided with a limiting part one (32) that inserts into the guide rail groove (12) and the other end is provided with a limiting part two (33) that extends into the clearance groove (13). The inner wall of the limiting part two (33) is in contact with the outer wall of the clearance groove (13).

3. The fixture for testing pin products according to claim 2, characterized in that, One side of the limiting part 2 (33) is provided with a threaded through hole (34), and a locking screw (35) is threadedly connected to the threaded through hole (34).

4. A fixture for testing pin products according to claim 1, characterized in that, At least two counterweights (6) are placed on the upper surface of the fixed base (1).

5. A fixture for testing pin products according to claim 4, characterized in that, The counterweight (6) is a magnet, and the fixed base (1) is made of a metal material that can be attracted by the magnet, so that the counterweight (6) can be attracted to the fixed base (1) by magnetic force.

6. A fixture for testing pin products according to claim 2, characterized in that, The clearance groove (13) is located directly below the limiting part two (33) and a limiting groove (19) is provided. The limiting groove (19) is designed in an inverted "T" shape. The lower part of the limiting part two (33) extends into the limiting groove (19) and an extension part (36) is provided at the end. The extension part (36) is adapted to the limiting groove (19).

7. A fixture for testing pin products according to claim 6, characterized in that, The clearance groove (13) is provided with a fixing groove (14) on the side away from the limiting groove (19). The fixing groove (14) is provided with two threaded holes (15). A scale (16) is placed on the fixing groove (14). The scale (16) is provided with two locking holes (17). The two locking holes (17) are respectively connected to the corresponding threaded holes (15). Bolts (18) are provided on the two locking holes (17). The threaded end of the bolt (18) is threadedly connected to the threaded hole (15). The limiting part two (33) is provided with a pointed tip (37) on the side of the scale (16). The pointed tip (37) is aligned with the scale on the scale (16).

Images