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

Abstract

The invention discloses a flexible FPC test bearing module with an elastic extension function and a test machine thereof, the flexible FPC test bearing module comprises test supporting tables, a positioning fixing assembly, a stretching extension assembly and a positioning reference assembly, a flexible FPC comprises an FPC belt body, a golden finger and a connecting arc part, the number of the test supporting tables is at least two, and the at least two test supporting tables are detachably arranged on a support; the positioning and fixing assembly is arranged on the test support table, and a bearing channel is formed on the test support table; the stretching and extending assembly and the positioning reference assembly are arranged at one end of the bearing channel in the X-axis direction in a spaced mode. The positioning reference assembly is away from the bearing channel. According to the invention, stretching extension of the golden finger is realized, and elastic stretching is realized; in the stretching and extending process, guiding positioning and stretching limit limiting of the clamping blocks and the golden fingers are synchronously achieved, the position accuracy of the golden fingers is guaranteed, and the golden fingers are reversely pressed through reverse elastic force after positioning so that the position stability of the golden fingers in the follow-up testing process can be continuously maintained, and the elastic extending function can be achieved.

Description

Technical Field

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

[0002] Flexible circuit boards, also known as "FPC soft boards", are printed circuit boards made of flexible insulating substrates. FPC can provide excellent electrical performance, meet the needs of smaller and higher density installation designs, and also help reduce assembly processes and enhance reliability. Flexible circuit boards FPC soft boards can be bent, wound, and folded freely, and can withstand millions of dynamic bends without damaging the wires. They can be arranged arbitrarily according to spatial layout requirements, and can be moved and stretched arbitrarily in three-dimensional space, thereby achieving the integration of component assembly and wire connection; and can greatly reduce the size and weight of electronic products, which is suitable for the development of electronic products towards high density, miniaturization, and high reliability.

[0003] The end of the flexible FPC is provided with a gold finger for connection with other circuit components. The manufacturing process of the flexible FPC involves a testing process. After it is electrically connected to the test circuit, the test circuit is used to simulate and test various electrical indexes of the flexible FPC. In the specific test process, it is generally necessary to connect the flexible FPC to the test circuit through multiple probes that independently contact the multiple conductive contacts of the gold finger; in addition, the connection between the gold finger and the FPC belt body of the flexible FPC is an arc structure, so that the gold finger and the FPC belt body are in planes at different heights in the incoming state; based on this test process requirement, in the process of automated testing of the flexible FPC, it is first necessary to design a test platform for carrying the flexible FPC; at the same time, based on the flexible characteristics of the FPC belt body, the position of the gold finger in the suspended state is unstable. In order to ensure that the probe accurately contacts the conductive contact of the gold finger in the subsequent test process, it is necessary to ensure the stability of the position state of the gold finger before the test; in view of this, it is necessary to design a test carrying module and a test machine suitable for a flexible FPC with a gold finger in the suspended state. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a method for realizing flexible FPC load-bearing positioning while realizing the stretching and extension of the gold fingers, and having an elastic spacing adjustment space in the stretching direction to realize elastic stretching, effectively avoiding excessive stretching and resulting in belt breakage and damage; at the same time, during the stretching and extension process, the guiding positioning of the clamping block and the gold fingers and the stretching limit limit are simultaneously realized, effectively ensuring the position accuracy of the gold fingers, and effectively reducing positioning damage by positioning the gold fingers through elastic buffering and blocking, and after positioning, the gold fingers are back-pressed by reverse elastic force to continuously maintain their position stability during subsequent tests. A flexible FPC test load-bearing module and its testing machine with elastic extension function.

[0005] The technical solution adopted by the present invention is as follows: a flexible FPC test bearing module with elastic extension function, which is arranged in a flexible FPC testing machine and is used to bear a flexible FPC, including a bracket with a rectangular frame structure arranged on the machine platform of the testing machine, and also including a test support, a positioning and fixing component, a stretching and extension component and a positioning reference component, wherein the flexible FPC includes an FPC belt body, a gold finger and a connecting arc portion, and the FPC belt body is a flexible belt-shaped structure; the gold finger is located at one end of the FPC belt body and is connected to the FPC belt body through the connecting arc portion; the connecting arc portion extends in the direction of the arc in a vertical plane, so that the FPC belt body and the gold finger connected to its two ends are in planes at different heights; at least two conductive contacts are arranged on the gold finger for electrical connection; the test support It comprises at least two test supports, at least two of which are detachably arranged on the bracket and extend along the X-axis direction; the positioning and fixing component is arranged on the test support and extends along the X-axis direction, forming a bearing channel on the test support for bearing, positioning and adsorbing and fixing the flexible FPC; the stretching and extension component and the positioning reference component are arranged at one end of the bearing channel at intervals along the X-axis direction; the stretching and extension component is close to the bearing channel, and after clamping and fixing the gold finger along the Y-axis direction, drives it away from the FPC belt body along the X-axis direction, so that the connecting arc is extended and 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; the stretching and extension component flexibly stretches the gold finger along the X-axis direction; the positioning reference component has a flexible activity space along the X-axis direction to flexibly position the gold finger.

[0006] Preferably, the bracket is provided with at least two positioning pins, which protrude upward 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 platform.

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

[0008] Preferably, a mounting groove is provided at one end of the test support, and the mounting groove passes through the test support; the stretching and extension assembly is arranged in the mounting groove; the stretching and extension assembly includes a driving component, a clamping component and a stretching guide component, wherein the driving component is arranged in the mounting groove and outputs power along the X-axis direction; the stretching guide component is slidably arranged in the mounting groove along the X-axis direction; the clamping component is arranged on the stretching guide component and is connected to the driving component, and the driving component drives it to move linearly along the X-axis direction; the clamping component outputs power along the Y-axis direction, and is used to clamp and fix the gold fingers from both sides.

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

[0010] Preferably, the stretching guide assembly includes a U-shaped connecting seat and a slider, wherein the U-shaped connecting seat is arranged in a mounting groove, and two side walls are respectively provided with sliding rails extending along the X-axis direction; the slider includes two sliders, which are respectively slidably embedded in the sliding rails on the two side walls of the U-shaped connecting seat, and are respectively connected to the groove walls of the mounting groove.

[0011] Preferably, the clamping component includes a clamping cylinder, a clamping block, a connecting piece and a spring column, wherein the clamping cylinder is connected and fixed to the end wall of the U-shaped connecting seat; the clamping block includes two blocks, the two clamping blocks are arranged at intervals along the Y-axis direction, and are respectively connected to the output end of the clamping cylinder, and are driven by the clamping cylinder to clamp and fix the gold fingers from both sides; the two ends of the connecting piece and the spring column are respectively connected to the clamping cylinder and the stretching seat, so that the clamping cylinder and the stretching seat are flexibly connected.

[0012] Preferably, the cross-section of the connecting piece is a T-shaped structure, the connecting piece is inserted into the light hole provided on the stretching seat, and slides freely in the light hole, one end of the connecting piece is inserted into the threaded hole provided on the clamping cylinder, and is fixedly connected to the clamping cylinder, so that the stretching seat and the clamping cylinder have a freely sliding distance along the X-axis direction; one end of the spring column is fixedly connected to the clamping cylinder, and the other end can movably pass through the guide hole provided on the stretching seat, and a spring is sleeved on the spring column; the spring is arranged between the stretching seat and the clamping cylinder, and the two ends are respectively connected to the stretching seat and the clamping cylinder; after the stretching seat receives the pulling force of the pull rod, the clamping cylinder and the gold finger clamped and fixed thereon are driven by the connecting piece to move in the direction away from the FPC belt body, so that the connecting arc is stretched and extended to the horizontal plane, and the opposite buffering force is provided by the spring.

[0013] Preferably, the positioning reference assembly includes a positioning reference seat, an elastic positioning block and a positioning spring, wherein the positioning reference seat is arranged at an interval on one side of the clamping cylinder, and two positioning guide grooves are provided on the side wall of the positioning reference seat close to the clamping cylinder, and a positioning groove is provided between the two positioning guide grooves; the elastic positioning block is arranged 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 drives the gold finger to stretch and extend outward, it gradually slides into the positioning guide groove, and is positioned and guided as well as limited to the extreme position through the positioning guide groove; when the gold finger is pulled outward by the clamping block, it enters the positioning groove, and is positioned and guided as well as limited to the extreme position through the positioning groove.

[0015] A testing machine comprising a flexible FPC testing bearing module with elastic extension function.

[0016] The beneficial effects of the present invention are: In view of the defects and shortcomings of the prior art, the present invention independently develops and designs a method of realizing flexible FPC bearing positioning while realizing stretching and extension of gold fingers, and having elastic spacing adjustment space in the stretching direction to realize elastic stretching, effectively avoiding excessive stretching and resulting in belt breakage and damage; at the same time, during the stretching and extension process, the guiding positioning of the clamping block and the gold fingers and the stretching limit limit are simultaneously realized, effectively ensuring the position accuracy of the gold fingers, and positioning damage is effectively reduced by elastic buffer blocking the positioning of the gold fingers, and after positioning, the gold fingers are counter-pressed by reverse elastic force to continuously maintain their position stability during subsequent tests. A flexible FPC test bearing module and a test machine with elastic extension function.

[0017] The present invention belongs to a mechanism and an automated device for testing electrical parameters of a flexible FPC, and is applied to the field of electrical parameter testing of a flexible FPC with a gold finger that is in an unstable suspended state. The present invention is used to provide a load-bearing and clamping platform during the flexible FPC testing process, so as to carry and fix the flexible FPC during the testing process; specifically, the present invention uses a bracket with a rectangular frame structure horizontally arranged on a test machine platform as a supporting component, and a plurality of test supports are arranged on the bracket to support a plurality of flexible FPCs for electrical testing. The test supports are mutually sleeved with positioning pins on the bracket through positioning holes provided thereon to realize rapid and accurate disassembly and assembly and placement; two columns of reference blocks are arranged on the test support along the X-axis direction, and the two columns of reference blocks are arranged between the two columns of reference blocks. A load-bearing channel is formed in the middle, which is used to play a guiding and limiting role in the process of placing the flexible FPC. A plurality of vacuum suction nozzles are arranged at intervals in the load-bearing channel. The vacuum suction nozzles are connected to an external vacuum generator and are used to generate vacuum negative pressure to downwardly absorb and fix the flexible FPC in the load-bearing channel; the special feature is that, for the flexible FPC with suspended gold fingers, the present invention provides a stretching and extension component and a positioning reference component at one end of the load-bearing channel, the stretching and extension component and the positioning component are arranged at intervals along the X-axis direction and are located on the outside of the load-bearing channel, and the stretching and extension component outputs power along the X-axis direction in the mounting groove of the test support. When the flexible FPC is placed in the load-bearing channel, the clamping cylinder of the stretching and extension component drives the two clamping blocks to clamp and fix the gold fingers from both sides. After that, the stretching cylinder drives the clamping cylinder and its clamping block to move away from the flexible FPC, so that the connecting arc between the gold finger and the FPC belt body is gradually stretched and extended to the horizontal direction. During the stretching process, the clamping cylinder guides and limits the gold finger through the U-shaped connecting seat below it and the sliding rails and sliders arranged on the two side walls of the U-shaped connecting seat and the groove wall of the mounting groove; during the stretching and extension process of the gold finger, the clamping block drives the gold finger to gradually approach the positioning reference assembly, and the two clamping blocks gradually slide into the positioning guide groove of the positioning reference seat, and the clamping block and the gold finger are precisely guided and positioned through the positioning guide groove to ensure the stability of the gold finger position during subsequent testing. At the same time, the positioning guide groove also serves to limit the ultimate stretching position of the clamping block. Used to avoid excessive stretching of the gold finger by the clamp block, resulting in the breakage of the belt body, etc.; synchronously, the gold finger in the stretching process gradually slides into the positioning groove of the positioning reference seat, and while the gold finger is stretched and precisely 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. In order to avoid the rigid contact with the gold finger during the blocking positioning process, which may cause damage to the gold finger surface, the elastic positioning block is connected to the groove wall of the positioning groove through a positioning spring to achieve elastic contact blocking, and the positioning spring is compressed as the gold finger is stretched to the final position. When it moves to the preset position, the elastic force of the positioning spring itself presses the gold finger in the opposite direction, continuously pressing the gold finger to ensure its position stability during subsequent testing;Through the cooperation of the above stretching and extension components and the positioning reference components, the gold finger is stretched and extended before the test, and the secondary precise guiding positioning of the clamp block and the gold finger is realized. The elastic blocking of the gold finger is realized synchronously to effectively reduce the surface damage of the gold finger during the blocking contact process. The elastic buffer force can also play a reverse and continuous pressing role on the gold finger after the positioning is completed, so as to maintain its position state stability in the subsequent test process and ensure the test accuracy. ; BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 for Figure 1 The enlarged structural diagram at point I in the middle.

[0020] Figure 3 It is a structural schematic diagram of the positioning reference block of the present invention.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the test platform of the present invention.

[0022] Figure 5 It is a schematic diagram of the local structure of the test platform of the present invention.

[0023] Figure 6 It is a schematic diagram of the specific structure of the flexible FPC of the present invention.

[0024] Figure 7 This is one of the three-dimensional structural schematic diagrams of the stretching and extending component of the present invention.

[0025] Figure 8 This is the second schematic diagram of the three-dimensional structure of the stretching and extending component of the present invention.

[0026] Fig. 9 It is a schematic diagram of the connection structure of the stretching and extending component of the present invention.

[0027] In the figure: 0. Flexible FPC; 01. FPC strip; 02. Gold finger; 03. Connecting arc; 04. Conductive contact; 1. Bracket; 2. Test support; 3. Vacuum nozzle; 4. Reference block; 5. Stretch extension assembly; 6. Positioning pin; 7. Positioning reference seat; 8. Elastic positioning block; 9. Positioning spring; A. Positioning socket; B. Mounting slot; C. Positioning guide slot; D. Positioning slot; 51. Stretching cylinder; 52. Stretching 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. Light hole; F. Threaded hole; G. Guide hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; 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 connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0031] like Figure 1 to Figure 2 , Figures 3 to 8As shown, the present invention proposes a flexible FPC test bearing module with elastic extension function, which is arranged in a flexible FPC test machine and is used to bear a flexible FPC0, including a bracket 1 of a rectangular frame structure arranged on the machine platform of the test machine, and also including a test support 2, a positioning and fixing component, a stretching and extending component 5 and a positioning reference component, wherein the flexible FPC0 includes an FPC belt body 01, a gold finger 02 and a connecting arc portion 03, and the FPC belt body 01 is a flexible belt-shaped structure; the gold finger 02 is located at one end of the FPC belt body 01 and is connected to the FPC belt body 01 through the connecting arc portion 03; the connecting arc portion 03 extends in an arc direction in a vertical plane, so that the FPC belt body 01 and the gold finger 02 connected to its two ends are in planes at different heights; at least two conductive contacts 04 are arranged on the gold finger 02 for electrical connection; the test The test support 2 includes at least two, at least two test supports 2 are detachably arranged on the bracket 1 and extend along the X-axis direction; the positioning and fixing component is arranged on the test support 2 and extends along the X-axis direction, forming a bearing channel on the test support 2 for bearing, positioning and adsorbing and fixing the flexible FPC0; the stretching and extension component 5 and the positioning reference component are arranged at one end of the bearing channel at intervals along the X-axis direction; the stretching and extension component 5 is close to the bearing channel, and after clamping and fixing the gold finger 02 along the Y-axis direction, it drives it away from the FPC belt body 01 along the X-axis direction, so that the connecting arc 03 is extended and 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 extension component 5 flexibly stretches the gold finger along the X-axis direction; the positioning reference component has a flexible activity space along the X-axis direction to flexibly position the gold finger 02.

[0032] The bracket 1 is provided with at least two positioning pins 6, which protrude upward 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 platform 2.

[0033] The positioning and fixing component includes a vacuum suction nozzle 3 and a reference block 4; the reference block 4 includes at least two blocks, and at least two reference blocks 4 are arranged at intervals along the X-axis direction to form a bearing channel extending along the X-axis direction, which is used to place the flexible FPC0, and the reference block 4 guides and limits the flexible FPC0 from both sides of the Y-axis direction; the vacuum suction nozzle 3 includes at least two blocks, and at least two vacuum suction nozzles 3 are arranged at intervals along the X-axis direction in the bearing channel, which are used to vacuum adsorb the flexible FPC0.

[0034] One end of the test support 2 is provided with a mounting groove B, and the mounting groove B passes through the test support 2; the stretching and extension component 5 is arranged in the mounting groove B; the stretching and extension component 5 includes a driving component, a clamping component and a stretching guide component, wherein the driving component is arranged in the mounting groove B and outputs power along the X-axis direction; the stretching guide component is slidably arranged in the mounting groove B along the X-axis direction; the clamping component is arranged on the stretching guide component and is connected to the driving component, and the driving component drives it to move linearly along the X-axis direction; the clamping component outputs power along the Y-axis direction, and is used to clamp and fix the gold finger 02 from both sides.

[0035] The driving component includes a stretching cylinder 51 and a stretching seat 52 , wherein the stretching cylinder 51 is arranged along the X-axis direction, and a pull rod 510 is connected to the output end of the stretching cylinder 51 ; the stretching seat 52 is connected and fixed to the end of the pull rod 510 .

[0036] The stretching guide assembly includes a U-shaped connecting seat 55 and a slider 56, wherein the U-shaped connecting seat 55 is arranged in the installation groove B, and the two side walls are respectively provided with slide rails extending along the X-axis direction; the slider 56 includes two pieces, and the two sliders 56 are respectively slidably embedded in the slide rails on the two side walls of the U-shaped connecting seat 55, and are respectively connected to the groove walls of the installation groove B.

[0037] The clamping components include a clamping cylinder 53, a clamping block 54, a connecting piece 57 and a spring column 58, wherein the clamping cylinder 53 is connected and fixed on the end wall of the U-shaped connecting seat 55; the clamping block 54 includes two blocks, the two clamping blocks 54 are arranged at intervals along the Y-axis direction, and are respectively connected to the output ends of the clamping cylinder 53, and are driven by the clamping cylinder 53 to clamp and fix the gold finger 02 from both sides; the two ends of the connecting piece 57 and the spring column 58 are respectively connected to the clamping cylinder 53 and the stretching seat 52, so that the clamping cylinder 53 and the stretching seat 52 are flexibly connected. Example 2

[0038] like Fig. 9As shown in the figure, as an embodiment of the present invention, the cross section of the connecting member 57 of the present invention is a T-shaped structure. The connecting member 57 is inserted into the light hole E opened on the stretching seat 52 and slides freely in the light hole E. One end of the connecting member 57 is inserted into the threaded hole F opened on the clamping cylinder 53 and is fixedly connected to the clamping cylinder 53, so that the stretching seat 52 and the clamping cylinder 53 have a distance that can slide freely along the X-axis direction; one end of the spring column 58 is fixedly connected to the clamping cylinder 53, and the other end is movable. The spring 59 is sleeved on the spring column 58 through the guide hole opened on the stretching seat 52; the spring 59 is arranged between the stretching seat 52 and the clamping cylinder 53, and the two ends are respectively connected to the stretching seat 52 and the clamping cylinder 53; after the stretching seat 52 receives the pulling force of the pull rod 510, it drives the clamping cylinder 53 and the gold finger 02 clamped and fixed thereon to move away from the FPC belt body 01 through the connecting piece 57, so that the connecting arc portion 03 is stretched and extended to the horizontal plane, and the opposite buffering force is provided by the spring 59. Example 3

[0039] like Figure 3 As shown, 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, wherein the positioning reference seat 7 is arranged at intervals on one side of the clamping cylinder 53, and two positioning guide grooves C are provided on the side wall of the positioning reference seat 7 close to 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, and 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.

[0040] 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 drives the gold finger 02 to stretch and extend outward, it gradually slides into the positioning guide groove C, and is positioned and guided and limited to the extreme position through 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 elastic blocking through the positioning groove D. Example 4

[0041] As an embodiment of the present invention, this embodiment discloses a testing machine including a flexible FPC testing bearing module with elastic extension function.

[0042] Furthermore, the present invention designs a method for realizing flexible FPC bearing positioning while realizing stretching and extension of gold fingers, and has elastic spacing adjustment space in the stretching direction to realize elastic stretching, effectively avoiding excessive stretching and resulting in belt breakage and damage; at the same time, during the stretching and extension process, the guided positioning of the clamping block and the gold fingers and the stretching limit limit are synchronously realized, effectively ensuring the position accuracy of the gold fingers, and positioning the gold fingers through elastic buffering to effectively reduce positioning damage, and after positioning, the gold fingers are back-pressed by reverse elastic force to continuously maintain their position stability during subsequent tests. A flexible FPC test bearing module and its testing machine with elastic extension function. The present invention belongs to a mechanism and an automated device for testing electrical parameters of a flexible FPC, and is applied to the field of electrical parameter testing of a flexible FPC with a gold finger and the gold finger being in a suspended unstable state. The present invention is used to provide a load-bearing and clamping platform during the testing process of the flexible FPC, so as to carry and fix the flexible FPC during the testing process; specifically, the present invention uses a bracket of a rectangular frame structure horizontally arranged on a test machine platform as a supporting component, and a plurality of test supports are arranged on the bracket, which are used to support a plurality of flexible FPCs for electrical testing, and the test supports are mutually sleeved with positioning plugs on the bracket through positioning holes provided thereon to realize fast and accurate disassembly and placement; two rows of reference blocks are arranged on the test support along the X-axis direction, and a load-bearing channel is formed between the two rows of reference blocks, which is used to play a guiding and limiting role in the process of placing the flexible FPC, and a plurality of vacuum suction nozzles are arranged at intervals in the load-bearing channel, and the vacuum suction nozzles are connected to an external vacuum generator, which is used to generate vacuum negative pressure to downwardly absorb and fix the flexible FPC in the load-bearing channel; the special feature is that for a flexible FPC with a suspended gold finger, the present invention is provided with a stretching extension component and The positioning reference component, the stretching and extension component and the positioning component are arranged at intervals along the X-axis direction and are located on the outside of the load-bearing channel, and the stretching and extension component outputs power along the X-axis direction in the mounting groove of the test support. After the flexible FPC is placed in the load-bearing channel, the clamping cylinder of the stretching and extension component drives the two clamping blocks to clamp and fix the gold finger from both sides, and 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 finger and the FPC belt body is gradually stretched and extended to the horizontal direction. During the stretching process, the clamping cylinder is connected to the gold finger through the U-shaped connection below it. The seat and the sliding rails and sliders arranged on the two side walls of the U-shaped connecting seat are slidably connected with the groove wall of the installation groove for guiding and limiting; during the stretching and extension process 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, and the clamping block and the gold finger are finely guided and positioned through the positioning guide groove to ensure the stability of the gold finger position during the subsequent test process. At the same time, the positioning guide groove also plays a role in limiting the extreme stretching position of the clamping block, so as to avoid excessive stretching of the gold finger by the clamping block, resulting in belt body breakage, etc.;Synchronously, the gold finger in the stretching process gradually slides into the positioning groove of the positioning reference seat. While the positioning groove is used to stretch and precisely guide the gold finger, the elastic positioning block in the positioning groove blocks and positions the gold finger from the opposite side of the stretching. In order to avoid the rigid contact with the gold finger during the blocking positioning process, which may cause damage to the gold finger surface, the elastic positioning block is connected to the groove wall of the positioning groove through the 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 the gold finger in the reverse direction, and continuously presses the gold finger to ensure its position stability during the subsequent test process. Through the cooperation of the above stretching and extension components and the positioning reference components, the gold finger is stretched and extended before the test, and the secondary precise guiding positioning of the clamp block and the gold finger is achieved. The elastic blocking of the gold finger is synchronously achieved to effectively reduce the surface damage of the gold finger during the blocking contact process. After the positioning is completed, the elastic buffer force can also play a reverse and continuous pressing role on the gold finger, so as to maintain its position state stability during the subsequent test process and ensure the test accuracy. ;

[0043] The embodiments of the present invention are only to introduce its specific implementation methods and are not intended to limit its protection scope. The technicians in this industry can make some modifications inspired by this embodiment, so any equivalent changes or modifications made according to the scope of the patent of the present invention are within the scope of the patent claims of the present invention.

Claims

1. A flexible FPC test bearing module with elastic extension function, arranged in a flexible FPC test machine, used to bear a flexible FPC (0), comprising a bracket (1) of a rectangular frame structure arranged on a machine platform of the test machine, characterized in that: It also includes a test support (2), a positioning and fixing component, a stretching and extending component (5) and a positioning reference component, wherein: The flexible FPC (0) comprises an FPC strip (01), a gold finger (02) and a connecting arc (03); the FPC strip (01) is a flexible strip-shaped structure; the gold finger (02) is located at one end of the FPC strip (01) and is connected to the FPC strip (01) via the connecting arc (03); the connecting arc (03) extends in an arc direction in a vertical plane, so that the FPC strip (01) and the gold finger (02) connected to its two ends are in planes at different heights; at least two conductive contact sheets (04) are arranged on the gold finger (02) for electrical connection; The test supports (2) include at least two, and the at least two test supports (2) are detachably arranged on the bracket (1) and extend along the X-axis direction; The positioning and fixing component is arranged on the test support platform (2) and extends along the X-axis direction, forming a bearing channel on the test support platform (2) for bearing, positioning and adsorbing and fixing the flexible FPC (0); The stretching and extending component (5) and the positioning reference component are arranged at one end of the bearing channel at intervals along the X-axis direction; the stretching and extending component (5) is close to the bearing channel, and after clamping and fixing the gold finger (02) along the Y-axis direction, drives it away from the FPC belt body (01) along the X-axis direction, so that the connecting arc portion (03) is stretched to a horizontal plane; the positioning reference component is far 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; and the positioning reference component has a flexible activity space along the X-axis direction so as to flexibly position the gold finger (02).

2. A flexible FPC test load-bearing module with elastic extension function according to claim 1, characterized in that: The bracket (1) is provided with at least two positioning pins (6), and the positioning pins (6) protrude upward 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 platform (2).

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

4. The flexible FPC test load-bearing module with elastic extension function according to claim 1, characterized in that: One end of the test support (2) is provided with a mounting groove (B), and the mounting groove (B) passes through the test support (2); the stretching extension component (5) is arranged in the mounting groove (B); the stretching extension component (5) comprises a driving component, a clamping component and a stretching guide component, wherein the driving component is arranged in the mounting groove (B) and outputs power along the X-axis direction; the stretching guide component is slidably arranged in the mounting groove (B) along the X-axis direction; the clamping component is arranged on the stretching guide component and is connected to the driving component, and the driving component drives it to move linearly along the X-axis direction; the clamping component outputs power along the Y-axis direction, and is used to clamp and fix the gold finger (02) from both sides.

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

6. The flexible FPC test load-bearing module with elastic extension function according to claim 5, characterized in that: The stretching guide assembly comprises a U-shaped connecting seat (55) and a sliding block (56), wherein the U-shaped connecting seat (55) is arranged in the mounting groove (B), and two side walls are respectively provided with sliding rails extending along the X-axis direction; the sliding block (56) comprises two pieces, and the two sliding blocks (56) are respectively slidably embedded in the sliding rails on the two side walls of the U-shaped connecting seat (55), and are respectively connected to the groove walls of the mounting groove (B).

7. The flexible FPC test load-bearing module with elastic extension function according to claim 6, characterized in that: The clamping component comprises a clamping cylinder (53), a clamping block (54), a connecting piece (57) and a spring column (58), wherein the clamping cylinder (53) is connected and fixed to the end wall of the U-shaped connecting seat (55); the clamping block (54) comprises two blocks, the two clamping blocks (54) are arranged at intervals along the Y-axis direction, and are respectively connected to the output ends of the clamping cylinder (53), and are driven by the clamping cylinder (53) to clamp and fix the gold finger (02) from both sides; the two ends of the connecting piece (57) and the spring column (58) are respectively connected to the clamping cylinder (53) and the stretching seat (52), so that the clamping cylinder (53) and the stretching seat (52) are flexibly connected.

8. The flexible FPC test load-bearing module with elastic extension function according to claim 7, characterized in that: The cross section of the connecting member (57) is a T-shaped structure. The connecting member (57) is inserted into a light hole (E) opened on the stretching seat (52) and slides freely in the light hole (E). One end of the connecting member (57) is inserted into a threaded hole (F) opened on the clamping cylinder (53) and is fixedly connected to the clamping cylinder (53), so that the stretching seat (52) and the clamping cylinder (53) have a distance that allows free sliding along the X-axis direction. One end of the spring column (58) is fixedly connected to the clamping cylinder (53), and the other end can movably pass through the threaded hole (F) opened on the stretching seat (52). A guide hole is provided, and a spring (59) is sleeved on the spring column (58); the spring (59) is arranged between the stretching seat (52) and the clamping cylinder (53), and the two ends are respectively connected to the stretching seat (52) and the clamping cylinder (53); after the stretching seat (52) receives the pulling force of the pull rod (510), it drives the clamping cylinder (53) and the gold finger (02) clamped and fixed thereon to move in a direction away from the FPC belt body (01) through the connecting piece (57), so that the connecting arc portion (03) is stretched and extended to the horizontal plane, and the opposite buffering force is provided by the spring (59).

9. The flexible FPC test load-bearing module with elastic extension function according to claim 7, characterized in that: The positioning reference assembly comprises a positioning reference seat (7), an elastic positioning block (8) and a positioning spring (9), wherein the positioning reference seat (7) is arranged at intervals on one side of the clamping cylinder (53), and two positioning guide grooves (C) are provided on the side wall of the positioning reference seat (7) close to 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, and 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.

10. The flexible FPC test load-bearing 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) drives the gold finger (02) to stretch and extend outward, it gradually slides into the positioning guide groove (C), and is positioned and guided and limited to the extreme position through 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 elastic blocking through the positioning groove (D).

11. A testing machine comprising the flexible FPC testing bearing module with elastic extension function as claimed in any one of claims 1 to 10.

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