Flexible FPC test bearing module with elastic extension function and test machine thereof

Abstract

This invention discloses a flexible FPC test support module and its testing machine with elastic extension function, including a test support, a positioning and fixing component, a tensile extension component, and a positioning reference component. The flexible FPC includes an FPC strip, gold fingers, and a connecting arc. At least two test supports are detachably mounted on a support frame. The positioning and fixing component is mounted on the test supports, forming a load-bearing channel. The tensile extension component and the positioning reference component are spaced apart along the X-axis at one end of the load-bearing channel; the positioning reference component is located away from the load-bearing channel. This invention achieves the tensile extension of the gold fingers, realizing elastic stretching. During the tensile extension process, the clamping block and gold fingers are simultaneously guided and positioned, and the tensile limit is limited, ensuring the positional accuracy of the gold fingers. After positioning, the gold fingers are counter-pressed by a reverse elastic force to continuously maintain their positional stability during subsequent testing, thus possessing an elastic extension function.

Description

Technical Field

[0001] This invention relates to the field of flexible printed circuit board (FPC) manufacturing equipment, and in particular to a flexible FPC test support module and its test machine with elastic extension function. Background Technology

[0002] Flexible printed circuit boards (FPCs), also known as flexible printed circuit boards, are printed circuit boards made of flexible insulating substrates. FPCs offer excellent electrical performance, meeting the needs of smaller and higher-density installation designs, and also help reduce assembly steps and enhance reliability. FPCs can be freely bent, rolled, and folded, and can withstand millions of dynamic bends without damaging the conductors. They can be arranged arbitrarily according to spatial layout requirements and can move and stretch freely in three-dimensional space, thus achieving integration of component assembly and wiring connections. Furthermore, they can significantly reduce the size and weight of electronic products, meeting the needs of electronic products developing towards high density, miniaturization, and high reliability.

[0003] Flexible FPCs (Flexible Printed Circuits) have gold fingers at their ends for connection with other circuit components. The manufacturing process of flexible FPCs involves testing, where the FPC is electrically connected to a test circuit to simulate and test various electrical performance parameters. Specifically, multiple probes are used to independently contact the conductive contacts of the gold fingers to connect the flexible FPC to the test circuit. Furthermore, the arc-shaped connection between the gold fingers and the FPC strip results in the gold fingers and the FPC strip being at different heights in the incoming material state. Based on these testing requirements, an automated testing platform is needed to support the flexible FPC during automated testing. Simultaneously, due to the flexibility of the FPC strip, the position of the suspended gold fingers is unstable. To ensure accurate probe contact with the conductive contacts during subsequent testing, the stability of the gold finger position must be guaranteed before testing. Therefore, it is necessary to design a test support module and testing machine suitable for flexible FPCs with suspended gold fingers. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing a flexible FPC test support module and its testing machine that achieves flexible FPC load-bearing positioning while simultaneously stretching and extending the gold fingers, and has elastic spacing adjustment space in the stretching direction to achieve elastic stretching, effectively avoiding the breakage and damage of the belt due to excessive stretching; at the same time, during the stretching and extension process, the clamping block and gold fingers are guided and positioned and the stretching limit is limited simultaneously, effectively ensuring the positional accuracy of the gold fingers, and the positioning of the gold fingers is effectively reduced by the elastic buffer blocking the positioning of the gold fingers, and after positioning, the gold fingers are pressed back by the reverse elastic force to continuously maintain their positional stability during subsequent testing.

[0005] The technical solution adopted in this invention is as follows: A flexible FPC test support module with elastic extension function is installed inside a flexible FPC testing machine for supporting the flexible FPC. It includes a rectangular frame structure support mounted on the testing machine's platform, and further includes a test support, a positioning and fixing component, a stretching and extending component, and a positioning reference component. The flexible FPC includes an FPC strip, gold fingers, and a connecting arc portion. The FPC strip is a flexible strip structure; the gold fingers are located at one end of the FPC strip and connected to the FPC strip through the connecting arc portion; the connecting arc portion extends along an arc direction in a vertical plane, so that the FPC strip and gold fingers connected at its two ends are in planes at different heights; at least two conductive contacts are arranged on the gold fingers for electrical connection; the test support... The system includes at least two test supports, each detachably mounted on a support and extending along the X-axis. A positioning and fixing assembly is mounted on the test supports and extends along the X-axis, forming a bearing channel on the test supports for bearing, positioning, and adsorbing the flexible FPC. A stretching and extending assembly and a positioning reference assembly are spaced apart at one end of the bearing channel along the X-axis. The stretching and extending assembly is close to the bearing channel and clamps and fixes the gold finger along the Y-axis, then moves it away from the FPC strip along the X-axis, causing the connecting arc to stretch to a horizontal plane. The positioning reference assembly is away from the bearing channel to prevent the gold finger from being pulled. The stretching and extending assembly flexibly stretches the gold finger along the X-axis. The positioning reference assembly has flexible movement space along the X-axis to flexibly position the gold finger.

[0006] Preferably, the bracket is provided with at least two positioning pins, which protrude upwards in the vertical direction; the test support is provided with at least two positioning holes corresponding to the positioning pins; the positioning pins are inserted into the positioning holes to position the test support.

[0007] Preferably, the positioning and fixing component includes a vacuum nozzle and a reference block; the reference block includes at least two blocks, which are spaced apart along the X-axis to form a bearing channel extending along the X-axis for placing the flexible FPC, and the reference blocks guide and limit the flexible FPC from both sides in the Y-axis direction; the vacuum nozzle includes at least two nozzles, which are spaced apart along the X-axis within the bearing channel for vacuum adsorption of the flexible FPC.

[0008] Preferably, one end of the test support is provided with a mounting groove, which extends through the test support; the tensile extension assembly is disposed in the mounting groove; the tensile extension assembly includes a driving component, a clamping component, and a tensile guide component, wherein the driving component is disposed in the mounting groove and outputs power along the X-axis direction; the tensile guide component is slidably disposed in the mounting groove along the X-axis direction; the clamping component is disposed on the tensile guide component and connected to the driving component, which drives it to move linearly along the X-axis direction; the clamping component outputs power along the Y-axis direction for clamping and fixing the gold fingers from both sides.

[0009] Preferably, the driving component includes a tension cylinder and a tension seat, wherein the tension cylinder is arranged along the X-axis direction, and a pull rod is connected to the output end of the tension cylinder; the tension seat is connected and fixed to the end of the pull rod.

[0010] Preferably, the tension guide component includes a U-shaped connecting seat and a slider, wherein the U-shaped connecting seat is disposed in the mounting groove and has slide rails extending along the X-axis on both side walls; the slider includes two blocks, which are slidably embedded on the slide rails on both side walls of the U-shaped connecting seat and connected to the groove wall of the mounting groove respectively.

[0011] Preferably, the clamping component includes a clamping cylinder, clamping blocks, a connecting member, and a spring post. The clamping cylinder is fixed to the end wall of the U-shaped connecting seat. The clamping blocks include two blocks, which are spaced apart along the Y-axis and connected to the output end of the clamping cylinder, respectively. Driven by the clamping cylinder, they clamp and fix the gold fingers from both sides. The two ends of the connecting member and the spring post are respectively connected to the clamping cylinder and the tensioning seat, so that the clamping cylinder and the tensioning seat are flexibly connected.

[0012] Preferably, the connector has a T-shaped cross-section. The connector is inserted into the aperture on the tension seat and slides freely within the aperture. One end of the connector is inserted into the threaded hole on the clamping cylinder and is fixedly connected to the clamping cylinder, so that the tension seat and the clamping cylinder have a freely sliding distance along the X-axis. One end of the spring post is fixedly connected to the clamping cylinder, and the other end can movably pass through the guide hole on the tension seat. A spring is sleeved on the spring post. The spring is located between the tension seat and the clamping cylinder, and both ends are connected to the tension seat and the clamping cylinder, respectively. After the tension seat is pulled by the pull rod, it drives the clamping cylinder and the gold fingers clamped and fixed on it to move away from the FPC tape through the connector, so that the connecting arc is stretched to the horizontal plane, and the spring provides the opposite buffer force.

[0013] Preferably, the positioning reference assembly includes a positioning reference seat, an elastic positioning block, and a positioning spring. The positioning reference seat is spaced apart on one side of the clamping cylinder. Two positioning guide grooves are provided on the side wall of the positioning reference seat near the clamping cylinder, and a positioning groove is provided between the two positioning guide grooves. The elastic positioning block is disposed on the positioning groove along the Y-axis direction, and the lower end of the elastic positioning block extends into the positioning groove and moves freely in the positioning groove along the X-axis direction. A positioning spring is connected between the elastic positioning block and the groove wall of the positioning groove, and the positioning spring extends along the X-axis direction.

[0014] Preferably, the positioning guide groove is aligned with the clamping block after clamping the gold finger along the X-axis direction; the positioning groove is aligned with the gold finger along the X-axis direction; when the clamping block pulls the gold finger outward, it gradually slides into the positioning guide groove, and is positioned and guided by the positioning guide groove and limited to the extreme position; when the gold finger is pulled outward by the clamping block, it enters the positioning groove, and is positioned and guided by the positioning groove and limited by the elastic blocking.

[0015] A test machine comprising a flexible FPC test support module with elastic extension function.

[0016] The beneficial effects of this invention are as follows:

[0017] This invention addresses the shortcomings and deficiencies of existing technologies by independently developing and designing a flexible FPC test support module and its testing machine that simultaneously achieves flexible FPC load-bearing positioning and stretching of the gold fingers. It also features elastic spacing adjustment space in the stretching direction, enabling elastic stretching and effectively preventing strip breakage due to excessive stretching. Simultaneously, during the stretching process, it guides and positions the clamping blocks and gold fingers, as well as limits the stretching limits, effectively ensuring the positional accuracy of the gold fingers. Furthermore, elastic buffering and blocking of the gold fingers effectively reduces positioning damage. After positioning, a reverse elastic force counter-pressures the gold fingers to continuously maintain their positional stability during subsequent testing.

[0018] This invention pertains to mechanisms and automated equipment for testing the electrical parameters of flexible FPCs. It is applied to the field of testing the electrical parameters of flexible FPCs with gold fingers that are suspended and unstable. This invention provides a support and clamping platform during the testing process to support and fix the flexible FPC. Specifically, the invention uses a rectangular frame structure bracket horizontally mounted on the testing machine as a support component. The bracket has multiple test supports for supporting multiple flexible FPCs for electrical testing. The test supports are quickly and accurately assembled and disassembled by interlocking with positioning pins on the bracket via positioning holes. Two rows of reference blocks are arranged along the X-axis on the test supports. A support channel is formed to guide and limit the placement of the flexible FPC. Multiple vacuum nozzles are spaced apart within the support channel and connected to an external vacuum generator to create negative pressure to suction and fix the flexible FPC downwards. A key feature is that, for flexible FPCs with suspended gold fingers, this invention includes a stretching and extending component and a positioning reference component at one end of the support channel. These components are spaced apart along the X-axis and located outside the support channel. The stretching and extending component outputs power along the X-axis within the mounting slot of the test support. When the flexible FPC is placed in the support channel, the clamping cylinder of the stretching and extending component drives two clamping blocks to clamp and fix the gold fingers from both sides. Subsequently, the stretching cylinder drives the clamping cylinder and its clamping blocks to move away from the flexible FPC, gradually stretching the connecting arc between the gold finger and the FPC strip to the horizontal direction. During the stretching process, the clamping cylinder is guided and limited by the U-shaped connecting seat below it and the slidable connection between the slide rails and sliders on both sides of the U-shaped connecting seat and the groove wall of the mounting groove. During the stretching and extension of the gold finger, the clamping blocks drive the gold finger to gradually approach the positioning reference component, and the two clamping blocks gradually slide into the positioning guide groove of the positioning reference seat. The positioning guide groove provides precise guidance and positioning for the clamping blocks and the gold finger to ensure the stability of the gold finger position during subsequent testing. At the same time, the positioning guide groove also limits the extreme stretching position of the clamping blocks. To prevent excessive stretching of the gold finger by the clamping block, which could lead to belt breakage, the gold finger is stretched and gradually slides into the positioning groove of the positioning reference seat. While the gold finger is stretched and guided by the positioning groove, the elastic positioning block in the positioning groove blocks and positions the gold finger from the opposite side of the stretching. To avoid damage to the gold finger surface caused by rigid contact between the blocking and positioning process and the gold finger, the elastic positioning block is connected to the groove wall of the positioning groove through a positioning spring to achieve elastic contact blocking. As the gold finger is stretched to the final position, the positioning spring is compressed. When it moves to the preset position, the elastic force of the positioning spring itself presses against the gold finger in the opposite direction, continuously pressing the gold finger to ensure its positional stability in subsequent testing.By cooperating with the above-mentioned stretching and positioning reference components, the gold finger is stretched and extended before testing, while simultaneously achieving secondary precise guidance and positioning of the clamping block and the gold finger. This also simultaneously provides elastic resistance to the gold finger, effectively reducing surface damage during contact. Furthermore, the elastic buffering force, after positioning, provides continuous reverse pressure on the gold finger to maintain its positional stability during subsequent testing, ensuring testing accuracy. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 for Figure 1 Enlarged structural diagram at point I.

[0021] Figure 3 This is a schematic diagram of the positioning reference block of the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the test support of the present invention.

[0023] Figure 5 This is a partial structural schematic diagram of the test support of the present invention.

[0024] Figure 6 This is a schematic diagram of the specific structure of the flexible FPC of the present invention.

[0025] Figure 7 This is one of the three-dimensional structural schematic diagrams of the stretching and elongating component of the present invention.

[0026] Figure 8 This is the second three-dimensional structural schematic diagram of the stretching and elongating component of the present invention.

[0027] Figure 9 This is a schematic diagram of the connection structure of the stretching and extending component of the present invention.

[0028] In the picture:

[0029] 0. Flexible FPC; 01. FPC strip; 02. Gold fingers; 03. Connecting arc; 04. Conductive contact;

[0030] 1. Bracket; 2. Test stand; 3. Vacuum nozzle; 4. Reference block; 5. Tensile extension assembly; 6. Positioning pin; 7. Positioning reference seat; 8. Elastic positioning block; 9. Positioning spring; A. Positioning hole; B. Mounting slot; C. Positioning guide slot; D. Positioning slot;

[0031] 51. Tensioning cylinder; 52. Tensioning seat; 53. Clamping cylinder; 54. Clamping block; 55. U-shaped connecting seat; 56. Slider; 57. Connecting piece; 58. Spring column; 59. Spring; 510. Pull rod; E. Smooth hole; F. Threaded hole; G. Guide hole. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example 1

[0035] like Figures 1 to 2 , Figures 3 to 8As shown, this invention proposes a flexible FPC test support module with elastic extension function, which is installed in a flexible FPC testing machine to support a flexible FPC 0. It includes a rectangular frame structure support 1 installed on the test machine's platform, and further includes a test support 2, a positioning and fixing component, a stretching and extending component 5, and a positioning reference component. The flexible FPC 0 includes an FPC strip 01, gold fingers 02, and a connecting arc portion 03. The FPC strip 01 is a flexible strip structure; the gold fingers 02 are located at one end of the FPC strip 01 and connected to the FPC strip 01 through the connecting arc portion 03; the connecting arc portion 03 extends along an arc direction in a vertical plane, so that the FPC strip 01 and the gold fingers 02 connected at its two ends are in planes at different heights; at least two conductive contact pieces 04 are arranged on the gold fingers 02 for electrical connection; the test... The test support 2 includes at least two test supports detachably mounted on the bracket 1 and extending along the X-axis. The positioning and fixing component is mounted on the test support 2 and extends along the X-axis, forming a bearing channel on the test support 2 for bearing, positioning, and adsorbing the flexible FPC 0. The stretching and extending component 5 and the positioning reference component are spaced apart at one end of the bearing channel along the X-axis. The stretching and extending component 5 is close to the bearing channel and clamps and fixes the gold finger 02 along the Y-axis, then drives it away from the FPC strip 01 along the X-axis, so that the connecting arc 03 is stretched to the horizontal plane. The positioning reference component is away from the bearing channel and is used to block and position the pulled gold finger 02. The stretching and extending component 5 flexibly stretches the gold finger along the X-axis. The positioning reference component has a flexible movement space along the X-axis to flexibly position the gold finger 02.

[0036] The support 1 is provided with at least two positioning pins 6, which protrude upwards in the vertical direction; the test support 2 is provided with at least two positioning holes A corresponding to the positioning pins 6; the positioning pins 6 are inserted into the positioning holes A to position the test support 2.

[0037] The positioning and fixing assembly includes a vacuum nozzle 3 and a reference block 4; the reference block 4 includes at least two blocks, which are spaced apart along the X-axis to form a bearing channel extending along the X-axis for placing the flexible FPC0, and the reference blocks 4 guide and limit the flexible FPC0 from both sides in the Y-axis direction; the vacuum nozzle 3 includes at least two blocks, which are spaced apart along the X-axis in the bearing channel for vacuum adsorption of the flexible FPC0.

[0038] One end of the test support 2 is provided with a mounting groove B, which extends through the test support 2. The tensile extension component 5 is disposed in the mounting groove B. The tensile extension component 5 includes a driving component, a clamping component, and a tensile guide component. The driving component is disposed in the mounting groove B and outputs power along the X-axis. The tensile guide component is slidably disposed in the mounting groove B along the X-axis. The clamping component is disposed on the tensile guide component and connected to the driving component. The driving component drives the guide component to move linearly along the X-axis. The clamping component outputs power along the Y-axis to clamp and fix the gold finger 02 from both sides.

[0039] The driving component includes a tension cylinder 51 and a tension seat 52. The tension cylinder 51 is arranged along the X-axis direction, and a pull rod 510 is connected to the output end of the tension cylinder 51. The tension seat 52 is connected and fixed to the end of the pull rod 510.

[0040] The tension guide component includes a U-shaped connecting seat 55 and a slider 56. The U-shaped connecting seat 55 is disposed in the mounting groove B, and slide rails extending along the X-axis are respectively provided on the two side walls. The slider 56 includes two pieces, which are slidably embedded on the slide rails on the two side walls of the U-shaped connecting seat 55 and are respectively connected to the groove wall of the mounting groove B.

[0041] The clamping components include a clamping cylinder 53, clamping blocks 54, a connecting piece 57, and a spring post 58. The clamping cylinder 53 is fixed to the end wall of the U-shaped connecting seat 55. The clamping blocks 54 include two blocks, which are spaced apart along the Y-axis and are respectively connected to the output end of the clamping cylinder 53. Driven by the clamping cylinder 53, they clamp and fix the gold fingers 02 from both sides. The two ends of the connecting piece 57 and the spring post 58 are respectively connected to the clamping cylinder 53 and the tension seat 52, so that the clamping cylinder 53 and the tension seat 52 are flexibly connected. Example 2

[0042] like Figure 9As shown in the figure, in one embodiment of the present invention, the connector 57 has a T-shaped cross-section. The connector 57 is inserted into the light hole E on the tension seat 52 and slides freely within the light hole E. One end of the connector 57 is inserted into the threaded hole F on the clamping cylinder 53 and is fixedly connected to the clamping cylinder 53, so that the tension seat 52 and the clamping cylinder 53 have a distance that can slide freely along the X-axis. One end of the spring post 58 is fixedly connected to the clamping cylinder 53, and the other end is movable. The spring 59 is sleeved on the spring post 58 through the guide hole opened on the tension seat 52; the spring 59 is set between the tension seat 52 and the clamping cylinder 53, and its two ends are respectively connected to the tension seat 52 and the clamping cylinder 53; after the tension seat 52 is pulled by the pull rod 510, it drives the clamping cylinder 53 and the gold finger 02 clamped and fixed on it to move away from the FPC tape body 01 through the connector 57, so that the connecting arc 03 is stretched to the horizontal plane, and the spring 59 provides the opposite buffer force. Example 3

[0043] like Figure 3 As shown in the figure, as an embodiment of the present invention, the positioning reference assembly of the present invention includes a positioning reference seat 7, an elastic positioning block 8, and a positioning spring 9. The positioning reference seat 7 is spaced apart on one side of the clamping cylinder 53. The positioning reference seat 7 has two positioning guide grooves C on its side wall near the clamping cylinder 53, and a positioning groove D is provided between the two positioning guide grooves C. The elastic positioning block 8 is disposed on the positioning groove D along the Y-axis direction. The lower end of the elastic positioning block 8 extends into the positioning groove D and moves freely in the positioning groove D along the X-axis direction. A positioning spring 9 is connected between the elastic positioning block 8 and the groove wall of the positioning groove D, and the positioning spring 9 extends along the X-axis direction.

[0044] The positioning guide groove C is aligned with the clamping block 54 after clamping the gold finger 02 along the X-axis direction; the positioning groove D is aligned with the gold finger 02 along the X-axis direction; when the clamping block 54 pulls the gold finger 02 outward, it gradually slides into the positioning guide groove C, and is positioned and guided and limited to the extreme position by the positioning guide groove C; when the gold finger 02 is pulled outward by the clamping block 54, it enters the positioning groove D, and is positioned and guided and limited by the elastic blocking by the positioning groove D. Example 4

[0045] As an embodiment of the present invention, this embodiment discloses a test machine comprising a flexible FPC test support module with elastic extension function.

[0046] Furthermore, this invention designs a flexible FPC test support module and its testing machine that achieves flexible FPC load-bearing positioning while simultaneously stretching and extending the gold fingers, and has elastic spacing adjustment space in the stretching direction to achieve elastic stretching, effectively avoiding strip breakage due to excessive stretching; at the same time, during the stretching and extension process, it simultaneously achieves guiding positioning and stretching limit limiting of the clamping block and gold fingers, effectively ensuring the positional accuracy of the gold fingers, and effectively reduces positioning damage by blocking the positioning of the gold fingers through elastic buffering, and after positioning, it continuously maintains the positional stability of the gold fingers through reverse elastic force to maintain its positional stability during subsequent testing. This invention pertains to mechanisms and automated equipment for testing the electrical parameters of flexible FPCs (Flexible Printed PCs). It is applied to the field of testing the electrical parameters of flexible FPCs with gold fingers that are suspended and unstable. This invention provides a support and clamping platform during the testing process to support and fix the flexible FPC. Specifically, the invention uses a rectangular frame structure horizontally mounted on the testing machine as a support component. The support has multiple test stands for supporting multiple flexible FPCs for electrical testing. The test stands connect with positioning pins on the support via positioning holes, enabling rapid and precise placement and removal. Two rows of reference blocks are arranged along the X-axis on the test stands, forming a support channel that guides and limits the placement of the flexible FPC. Multiple vacuum nozzles are spaced apart within the support channel and connected to an external vacuum generator to generate negative pressure to suction and fix the flexible FPC within the support channel. A key feature is that, for flexible FPCs with suspended gold fingers, this invention includes a stretching and extending component at one end of the support channel. The positioning reference assembly, stretching and extending assembly, and positioning assembly are spaced apart along the X-axis and located outside the bearing channel. The stretching and extending assembly outputs power along the X-axis within the mounting slot of the test support. After the flexible FPC is placed in the bearing channel, the clamping cylinder of the stretching and extending assembly drives two clamping blocks to clamp and fix the gold fingers from both sides. Then, the stretching cylinder drives the clamping cylinder and its clamping blocks to move away from the flexible FPC, so that the connecting arc between the gold fingers and the FPC strip is gradually stretched and extended to the horizontal direction. During the stretching process, the clamping cylinder is connected by a U-shaped connector below it. The seat and the slide rails and sliders set on both sides of the U-shaped connecting seat are slidably connected to the groove wall of the mounting groove for guidance and limitation; during the stretching and extension of the gold finger, the clamping block drives the gold finger to gradually approach the positioning reference component, and the two clamping blocks gradually slide into the positioning guide groove of the positioning reference seat. The positioning guide groove provides fine guidance and positioning for the clamping block and the gold finger to ensure the stability of the gold finger position during subsequent testing. At the same time, the positioning guide groove also limits the extreme stretching position of the clamping block to avoid excessive stretching of the gold finger by the clamping block, resulting in breakage of the belt.Simultaneously, during the stretching process, the gold finger gradually slides into the positioning groove of the positioning reference seat. While the positioning groove precisely guides the gold finger during stretching, the elastic positioning block within the groove blocks and positions the gold finger from the reverse side of the stretching process. To avoid surface damage to the gold finger due to rigid contact during the blocking and positioning process, the elastic positioning block is connected to the groove wall via a positioning spring, achieving elastic contact blocking. As the gold finger is stretched to its final position, the positioning spring is compressed. Once it reaches the preset position, the spring force itself reverses and presses against the gold finger, continuously compressing it to ensure its positional stability during subsequent testing. Through the cooperation of the stretching and positioning reference components, the gold finger is stretched and extended before testing, achieving secondary precise guidance and positioning of the clamp and gold finger. Simultaneously, the elastic blocking effectively reduces surface damage to the gold finger during blocking contact. Furthermore, the elastic buffering force continues to exert reverse pressure on the gold finger after positioning, maintaining its positional stability during subsequent testing and ensuring testing accuracy.

[0047] The embodiments of this invention are merely illustrative of specific implementation methods and are not intended to limit the scope of protection. Those skilled in the art can make modifications based on these embodiments; therefore, all equivalent changes or modifications made in accordance with the scope of this invention's patent claims fall within the scope of this invention's patent claims.

Claims

1. A flexible FPC test support module with elastic extension function, installed inside a flexible FPC testing machine, for supporting a flexible FPC (0), including a support (1) with a rectangular frame structure installed on the machine platform of the testing machine, characterized in that: It also includes a test support (2), a positioning and fixing component, a tensile and elongation component (5), and a positioning reference component, wherein, The flexible FPC (0) includes an FPC strip (01), gold fingers (02), and a connecting arc (03). The FPC strip (01) is a flexible strip structure. The gold fingers (02) are located at one end of the FPC strip (01) and are connected to the FPC strip (01) through the connecting arc (03). The connecting arc (03) extends along the arc direction in a vertical plane, so that the FPC strip (01) and the gold fingers (02) connected at both ends are in planes at different heights. At least two conductive contacts (04) are arranged on the gold fingers (02) for electrical connection. The test support (2) includes at least two, and the at least two test supports (2) are detachably mounted on the bracket (1) and extend along the X-axis direction; The positioning and fixing component is set on the test support (2) and extends along the X-axis direction to form a bearing channel on the test support (2) for bearing positioning and adsorbing and fixing the flexible FPC (0). The stretching and extending component (5) and the positioning reference component are spaced apart at one end of the bearing channel along the X-axis direction; the stretching and extending component (5) is close to the bearing channel and clamps and fixes the gold finger (02) along the Y-axis direction, and then drives it away from the FPC tape (01) along the X-axis direction, so that the connecting arc (03) is stretched to the horizontal plane; the positioning reference component is away from the bearing channel and is used to block and position the pulled gold finger (02). The stretching and extending component (5) flexibly stretches the gold finger along the X-axis direction; the positioning reference component has a flexible moving space along the X-axis direction so as to flexibly position the gold finger (02).

2. The flexible FPC test support module with elastic extension function according to claim 1, characterized in that: The bracket (1) is provided with at least two positioning pins (6), which protrude upwards in the vertical direction; the test support (2) is provided with at least two positioning holes (A) corresponding to the positioning pins (6); the positioning pins (6) are inserted into the positioning holes (A) to position the test support (2).

3. A flexible FPC test support module with elastic extension function according to claim 1, characterized in that: The positioning and fixing assembly includes a vacuum nozzle (3) and a reference block (4); the reference block (4) includes at least two blocks, which are spaced apart along the X-axis to form a bearing channel extending along the X-axis for placing the flexible FPC (0), and the reference block (4) guides and limits the flexible FPC (0) from both sides in the Y-axis direction; the vacuum nozzle (3) includes at least two blocks, which are spaced apart along the X-axis in the bearing channel for vacuum adsorption of the flexible FPC (0).

4. A flexible FPC test support module with elastic extension function according to claim 1, characterized in that: The test support (2) has a mounting groove (B) at one end, which passes through the test support (2); the stretching assembly (5) is set in the mounting groove (B); the stretching assembly (5) includes a driving component, a clamping component and a stretching guide component, wherein the driving component is set in the mounting groove (B) and outputs power along the X-axis direction; the stretching guide component is slidably set in the mounting groove (B) along the X-axis direction; the clamping component is set on the stretching guide component and connected to the driving component, which drives it to move linearly along the X-axis direction; the clamping component outputs power along the Y-axis direction to clamp and fix the gold fingers (02) from both sides.

5. A flexible FPC test support module with elastic extension function according to claim 4, characterized in that: The driving component includes a tension cylinder (51) and a tension seat (52). The tension cylinder (51) is arranged along the X-axis direction, and a pull rod (510) is connected to the output end of the tension cylinder (51). The tension seat (52) is connected and fixed to the end of the pull rod (510).

6. A flexible FPC test support module with elastic extension function according to claim 5, characterized in that: The tension guide component includes a U-shaped connecting seat (55) and a slider (56). The U-shaped connecting seat (55) is disposed in the mounting groove (B) and has slide rails extending along the X-axis on both side walls. The slider (56) includes two pieces, which are slidably embedded on the slide rails on both side walls of the U-shaped connecting seat (55) and connected to the groove wall of the mounting groove (B).

7. A flexible FPC test support module with elastic extension function according to claim 6, characterized in that: The clamping components include a clamping cylinder (53), clamping blocks (54), a connector (57), and a spring post (58). The clamping cylinder (53) is fixed to the end wall of the U-shaped connector (55). The clamping blocks (54) include two blocks, which are spaced apart along the Y-axis and connected to the output end of the clamping cylinder (53). Driven by the clamping cylinder (53), they clamp and fix the gold fingers (02) from both sides. The two ends of the connector (57) and the spring post (58) are connected to the clamping cylinder (53) and the tension seat (52) respectively, so that the clamping cylinder (53) and the tension seat (52) are flexibly connected.

8. A flexible FPC test support module with elastic extension function according to claim 7, characterized in that: The connector (57) has a T-shaped cross-section. The connector (57) is inserted into the light hole (E) on the tension seat (52) and slides freely within the light hole (E). One end of the connector (57) is inserted into the threaded hole (F) on the clamping cylinder (53) and is fixedly connected to the clamping cylinder (53), so that the tension seat (52) and the clamping cylinder (53) have a distance that can slide freely along the X-axis. One end of the spring column (58) is fixedly connected to the clamping cylinder (53), and the other end can move through the light hole (E) on the tension seat (52). A guide hole is provided, and a spring (59) is sleeved on the spring column (58); the spring (59) is set between the tension seat (52) and the clamping cylinder (53), and its two ends are respectively connected to the tension seat (52) and the clamping cylinder (53); after the tension seat (52) is pulled by the pull rod (510), it drives the clamping cylinder (53) and the gold finger (02) clamped and fixed on it to move away from the FPC tape (01) through the connector (57), so that the connecting arc (03) is stretched to the horizontal plane, and the spring (59) provides the opposite buffer force.

9. A flexible FPC test support module with elastic extension function according to claim 7, characterized in that: The positioning reference assembly includes a positioning reference seat (7), an elastic positioning block (8), and a positioning spring (9). The positioning reference seat (7) is spaced apart on one side of the clamping cylinder (53). The positioning reference seat (7) has two positioning guide grooves (C) on its side wall near the clamping cylinder (53), and a positioning groove (D) is provided between the two positioning guide grooves (C). The elastic positioning block (8) is arranged on the positioning groove (D) along the Y-axis direction. The lower end of the elastic positioning block (8) extends into the positioning groove (D) and moves freely along the X-axis direction within the positioning groove (D). A positioning spring (9) is connected between the elastic positioning block (8) and the groove wall of the positioning groove (D), and the positioning spring (9) extends along the X-axis direction.

10. A flexible FPC test support module with elastic extension function according to claim 9, characterized in that: The positioning guide groove (C) is aligned with the clamping block (54) after clamping the gold finger (02) along the X-axis direction; the positioning groove (D) is aligned with the gold finger (02) along the X-axis direction; when the clamping block (54) pulls the gold finger (02) outward, it gradually slides into the positioning guide groove (C), and is positioned and guided and limited to the extreme position by the positioning guide groove (C); when the gold finger (02) is pulled outward by the clamping block (54), it enters the positioning groove (D), and is positioned and guided and limited by the elastic blocking by the positioning groove (D).

11. A testing machine comprising a flexible FPC test support module with elastic extension function as described in any one of claims 1 to 10.

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