An FPCA test fixture
By designing an FPCA test fixture with a movable first needle plate and a booster cylinder structure, the problem of the probe being unable to penetrate the rosin layer was solved, achieving higher testing accuracy and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- COMPEQ TECH HUIZHOU CO LTD
- Filing Date
- 2025-04-07
- Publication Date
- 2026-06-09
AI Technical Summary
Traditional test fixtures have probes that cannot effectively penetrate the rosin layer, leading to poor contact and misjudgment. Insufficient probe travel also causes poor contact and misjudgment, affecting test accuracy and increasing production costs and time.
An FPCA test fixture was designed, which adopts a movable first probe plate and a booster cylinder structure. The first probe is independently pushed by the external booster cylinder to increase the stroke, ensuring that the probe can effectively penetrate the rosin layer and abut against the solder joint.
It improved the test yield, reduced unnecessary rework and scrap, and increased production efficiency.
Smart Images
Figure CN224341625U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of FPCA testing technology, and more specifically, to an FPCA testing fixture. Background Technology
[0002] FPCA (Flexible Printed Circuit Assembly) refers to a flexible printed circuit board, which is a finished circuit board assembled and soldered with various electronic components (such as resistors, capacitors, ICs, etc.) on an FPC basis. With the diversification of FPCA products, there are also more and more products with solder joints. Products with solder joints will have a rosin layer on their surface. Traditional test fixtures have the following problems in the solder joint pin-planting test production process: the probes are fixed and cannot effectively penetrate the rosin layer, resulting in poor contact and false judgment; the probe stroke is insufficient, resulting in poor contact and false judgment. This not only affects the accuracy of the test, but may also lead to unnecessary rework or scrap, increasing production costs and test time. Summary of the Invention
[0003] The purpose of this application is to provide an FPCA test fixture that can solve the following problems in the production process of solder joint pin insertion testing using traditional test fixtures: the probe is fixed and cannot effectively penetrate the rosin layer, resulting in poor contact and misjudgment; the probe stroke is insufficient, resulting in poor contact and misjudgment.
[0004] This application provides an FPCA testing fixture, including an upper mold and a lower mold. The upper mold is disposed above the lower mold, and a mounting plate is disposed on the lower mold. The mounting plate has a product slot for placing FPCA. A first needle plate is movably disposed below the mounting plate, and a first probe is disposed on the first needle plate. The upper end of the first probe can extend into the product slot. A booster seat is disposed below the first needle plate, and a booster cylinder is externally connected to the booster seat.
[0005] The upper mold is provided with guide posts, and the lower mold has guide holes, with the guide posts and guide holes being inserted into each other.
[0006] The mounting plate is provided with a clearance groove.
[0007] A limiting plate is provided above the mounting plate, and the limiting plate is movably covered above the product groove.
[0008] The upper end of the first probe is pointed.
[0009] The lower mold is provided with a second needle plate, which is located between the mounting plate and the first needle plate. The second needle plate is provided with a second probe and a third probe, the upper ends of the second probe and the upper ends of the third probe can extend into the product groove.
[0010] The upper mold is provided with a third needle plate, and the third needle plate is provided with a fourth probe, the lower end of which can extend into the product groove.
[0011] The beneficial effects of this utility model are:
[0012] This utility model provides an FPCA testing fixture. In use, the lower end of the first probe is connected to a test circuit. The FPCA product to be tested is placed into the product slot of the lower mold. Then, an external driving device drives the upper mold to press down onto the lower mold. Subsequently, an external booster cylinder drives the booster seat to move upward. The booster seat drives the first needle plate to move upward. The first needle plate drives the first probe to move upward until it penetrates the rosin layer and abuts against the solder joint of the FPCA product, thus enabling FPCA testing. This fixture uses a dedicated external booster cylinder to independently push the first probe, increasing the first probe stroke and ensuring that the first probe can effectively penetrate the rosin layer, improving the test yield, reducing unnecessary rework or scrap, and improving production efficiency. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the overall structure in some embodiments of this application;
[0015] Figure 2 This is a schematic diagram of the overall structure from another perspective in some embodiments of this application;
[0016] Figure 3 This is a schematic diagram of the lower mold structure in some embodiments of this application;
[0017] Figure 4 This is a schematic diagram of the lower mold structure from another perspective in some embodiments of this application;
[0018] Figure 5 This is a schematic diagram of the mounting plate structure without FPCA in some embodiments of this application;
[0019] Figure 6This is a schematic diagram of the mounting plate structure from another perspective in some embodiments of this application;
[0020] Figure 7 This is a schematic diagram of the first probe structure in some embodiments of this application.
[0021] The reference numerals in the attached figures are as follows:
[0022] 1. Upper mold; 11. Guide pillars;
[0023] 2. Lower mold; 21. Guide hole;
[0024] 3. Mounting plate; 31. Product slot; 32. Clearance slot;
[0025] 4. First needle plate; 41. First probe;
[0026] 5. Booster seat;
[0027] 6. Limit plate;
[0028] 7. Second needle plate; 71. Second probe; 72. Third probe;
[0029] 8. Third needle plate; 81. Fourth probe. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0033] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0034] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0035] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "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 application based on the specific circumstances.
[0036] like Figures 1 to 6 As shown, this application embodiment provides an FPCA testing fixture, including an upper mold 1 and a lower mold 2. The upper mold 1 is disposed above the lower mold 2. A mounting plate 3 is disposed on the lower mold 2. The mounting plate 3 has a product slot 31 for placing FPCA. A first needle plate 4 is movably disposed below the mounting plate 3. A first probe 41 is disposed on the first needle plate 4. The upper end of the first probe 41 can extend into the product slot 31. A booster seat 5 is disposed below the first needle plate 4. A booster cylinder is externally connected to the booster seat 5.
[0037] In use, the lower end of the first probe 41 is connected to an external test circuit. The FPCA product to be tested is placed into the product slot 31 of the lower mold 2. Then, the upper mold 1 is pressed down onto the lower mold 2 by an external drive device. Subsequently, the external booster cylinder drives the booster seat 5 to move upward. The booster seat 5 drives the first needle plate 4 to move upward. The first needle plate 4 drives the first probe 41 to move upward until it pierces the rosin layer and abuts against the solder joint of the FPCA product, so that FPCA testing can be performed. This fixture independently pushes the first probe 41 by setting a dedicated external booster cylinder, which increases the stroke of the first probe 41 and ensures that the first probe 41 can effectively pierce the rosin layer, improve the test yield, reduce unnecessary rework or scrap, and improve production efficiency.
[0038] like Figure 1 and 2 As shown, in this embodiment, the upper mold 1 is provided with a guide post 11, and the lower mold 2 is provided with a guide hole 21. The guide post 11 and the guide hole 21 are inserted and matched. The use of the guide post 11 and the guide hole 21 makes it easy for the upper mold 1 and the lower mold 2 to be aligned and pressed together, ensuring a precise connection.
[0039] like Figure 3 and 5 As shown, in this embodiment, the mounting plate 3 has a clearance groove 32; the clearance groove 32 facilitates the operator to pick up and put in FPCA products.
[0040] like Figure 3 As shown, in this embodiment, a limiting plate 6 is provided above the mounting plate 3. The limiting plate 6 can be movably covered above the product slot 31. In use, the FPCA product to be tested is placed into the product slot 31 of the lower mold 2, and then the limiting plate 6 is covered above the product slot 31. The limiting plate 6 ensures that the FPCA product can be stably placed in the product slot 31 and will not easily shift, thus ensuring the accuracy of the test.
[0041] like Figure 7 As shown, in this embodiment, the upper end of the first probe 41 is pointed; the pointed first probe 41 is more conducive to piercing the rosin layer.
[0042] like Figures 3 to 6 As shown, in this embodiment, a second needle plate 7 is provided on the lower mold 2. The second needle plate 7 is located between the mounting plate 3 and the first needle plate 4. A second probe 71 and a third probe 72 are provided on the second needle plate 7. The upper ends of the second probe 71 and the third probe 72 can both extend into the product groove 31.
[0043] When in use, the FPCA product to be tested is placed into the product slot 31 of the lower mold 2, the second probe 71 abuts against the gold fingers of the FPCA product, and the third probe 72 abuts against the steel sheet of the FPCA product, and the FPCA test can be carried out.
[0044] like Figure 1 and 2 As shown, in this embodiment, the upper mold 1 is provided with a third needle plate 8, and the third needle plate 8 is provided with a fourth probe 81. The lower end of the fourth probe 81 can extend into the product slot 31. In use, the FPCA product to be tested is placed into the product slot 31 of the lower mold 2. Then, the upper mold 1 is driven to press down onto the lower mold 2 by an external driving device. The upper mold 1 drives the third needle plate 8 to press down, and the third needle plate 8 drives the fourth probe 81 to press down. The fourth probe 81 abuts against the gold fingers of the FPCA product, and the FPCA test can be performed.
[0045] Working principle: When using the FPCA test fixture provided in this application, the lower end of the first probe 41 is connected to a test circuit. The FPCA product to be tested is placed into the product slot 31 of the lower mold 2. The second probe 71 abuts against the gold fingers of the FPCA product, and the third probe 72 abuts against the steel plate of the FPCA product. Then, the limiting plate 6 is placed on top of the product slot 31. Subsequently, the upper mold 1 is driven to press down onto the lower mold 2 by an external driving device. The upper mold 1 drives the third needle plate 8 to press down, and the third needle plate 8 drives the fourth probe 81 to press down. The fourth probe 81 abuts against the gold fingers of the FPCA product. Then, the external booster cylinder drives the booster seat 5 to move up, and the booster seat 5 drives the first needle plate 4 to move up. The first needle plate 4 drives the first probe 41 to move up until it pierces the rosin layer and abuts against the solder joint of the FPCA product, so that the FPCA test can be performed.
[0046] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An FPCA test fixture, characterized by: The device includes an upper mold (1) and a lower mold (2). The upper mold (1) is located above the lower mold (2). The lower mold (2) is provided with a mounting plate (3). The mounting plate (3) has a product slot (31) for placing FPCA. A first needle plate (4) is movably arranged below the mounting plate (3). A first probe (41) is provided on the first needle plate (4). The upper end of the first probe (41) can extend into the product slot (31). A booster seat (5) is provided below the first needle plate (4). The booster seat (5) is externally connected to a booster cylinder.
2. The FPCA test fixture of claim 1, wherein: The upper mold (1) is provided with a guide post (11), and the lower mold (2) is provided with a guide hole (21). The guide post (11) is inserted into the guide hole (21).
3. The FPCA test fixture of claim 1, wherein: The mounting plate (3) is provided with a clearance groove (32).
4. The FPCA test fixture of claim 1, wherein: A limiting plate (6) is provided above the mounting plate (3), and the limiting plate (6) is movably covered above the product groove (31).
5. The FPCA test fixture according to claim 1, characterized in that: The upper end of the first probe (41) is pointed.
6. The FPCA test fixture according to claim 1, characterized in that: The lower mold (2) is provided with a second needle plate (7), which is located between the mounting plate (3) and the first needle plate (4). The second needle plate (7) is provided with a second probe (71) and a third probe (72). The upper ends of the second probe (71) and the third probe (72) can extend into the product groove (31).
7. The FPCA test fixture according to claim 1, characterized in that: The upper mold (1) is provided with a third needle plate (8), and the third needle plate (8) is provided with a fourth probe (81), the lower end of which can extend into the product groove (31).