Bending durability testing method

Abstract

The invention discloses a bending durability testing method. The bending durability testing method comprises the following steps: step a, preparing a testing jig; the testing jig comprises a jig base, and a first sliding block and a second sliding block which move synchronously and reversely and are driven by a servo driving motor and a bidirectional driving screw rod are installed on the jig base. The first sliding block or the second sliding block is fixedly provided with a driving sliding seat, the driving sliding seat is provided with a driving inclined surface, the jig base is screwed with a pressing rod mounting seat at the rear side of the driving sliding seat, the pressing rod mounting seat is vertically and slidably provided with a movable pressing rod assembly, and the movable pressing rod assembly is provided with a roller which is in rolling contact with the driving inclined surface; b, electrically connecting a servo driving motor with a controller, and setting the rotating speed and the number of times of forward and reverse rotation; c, placing the FPC product to be tested; d, a servo driving motor is started through the controller; and step e, the FPC product after the bending operation is detected. Through the test fixture and the corresponding steps, the directional bending test of the FPC product can be effectively realized.

Description

Technical Field

[0001] The invention relates to the technical field of FPC bending test, and in particular to a bending durability test method. Background Art

[0002] FPC is a flexible, bendable printed circuit board that is widely used in various consumer electronics and industrial equipment. In order to ensure the reliability and stability of FPC products, bending tests are required during the production process.

[0003] Among them, the FPC bending test is a test used to evaluate the performance changes of FPC products after multiple bending; through repeated bending and relaxation, the characteristics and losses of the FPC's bending response during its service life can be understood. This test is designed to ensure the reliability, durability and stability of FPC products to meet product design requirements and quality indicators.

[0004] In addition, the patent number is: ZL202320877634.X, and the patent name is: A Chinese invention patent for an FPC bending test device, which discloses the following technical solutions, specifically: the FPC bending test device includes a base, a stand, an upper clamp, a guide assembly and a bending assembly, the stand is vertically installed on the base, the upper clamp is installed at the end of the stand away from the base, the stand is provided with a slot in the vertical direction, the guide assembly includes a screw assembly and a guide rod, the screw assembly is installed on the back of the stand, two guide rods are installed side by side at the output end of the screw assembly, there is a gap between the two guide rods, the guide rod is located directly below the upper clamp, the screw assembly drives the guide rod to press the slot up and down, the bending assembly includes a driving motor and an L-shaped clamp, the driving motor is installed on the stand, and its output end is connected to the L-shaped clamp to drive the L-shaped clamp to rotate; the upper clamp includes an electric push rod, a bracket, and an upper clamp body, the bracket is vertically connected to the stand, the electric push rod is installed on the bracket, and its output end is connected to the upper clamp body to drive the upper clamp body to move up and down. When the FPC bending test equipment performs a bending test on the FPC, the FPC board is vertically clamped between the bending assembly and the upper clamp, and the FPC board passes through the gap between the two guide rods; starting the drive motor can drive the L-shaped clamp to rotate and bend the FPC board back and forth.

[0005] It should be pointed out that in the process of using the above-mentioned FPC bending test equipment to implement the FPC product bending test, it has the following defects, specifically: the FPC bending test equipment cannot implement the directional bending test of the FPC product. Summary of the invention

[0006] The purpose of the present invention is to provide a bending durability testing method to address the deficiencies of the prior art, and the bending durability testing method can effectively implement directional bending testing of FPC products.

[0007] To achieve the above object, the present invention is implemented through the following technical solutions.

[0008] A bending durability testing method includes the following steps, specifically:

[0009] Step a, preparing a test fixture;

[0010] The test fixture comprises a fixture base, a first slider and a second slider are horizontally slidably mounted on the fixture base, the first slider is horizontally aligned with the second slider and arranged at intervals, the first slider is provided with a first internal threaded hole that runs horizontally through, and the second slider is provided with a second internal threaded hole that runs horizontally through; a first clamping block is mounted on the upper surface of the first slider, and a second clamping block is mounted on the upper surface of the second slider;

[0011] The fixture base is equipped with a servo drive motor, and the power output shaft of the servo drive motor is connected with a bidirectional drive screw rod, the left threaded portion of the bidirectional drive screw rod is screwed into the first internal threaded hole of the first slider, and the right threaded portion of the bidirectional drive screw rod is screwed into the second internal threaded hole of the second slider;

[0012] The first slider or the second slider is fastened with a driving slider, and the driving slider is provided with an inclined driving inclined surface; the fixture base is screwed with a pressure rod mounting seat on the rear side of the driving slider, and the pressure rod mounting seat is vertically slidably mounted with a movable pressure rod assembly, and the movable pressure rod assembly is provided with a roller that rolls in contact with the driving inclined surface of the driving slider;

[0013] Step b, electrically connecting the servo drive motor to the controller, and setting the speed and the number of forward and reverse rotations through the controller;

[0014] Step c, placing the FPC product to be tested, the left end of the FPC product is clamped and fixed on the upper surface of the first slider by the first clamping block, and the right end of the FPC product is clamped and fixed on the upper surface of the second slider by the second clamping block;

[0015] Step d, starting the servo drive motor through the controller, the servo drive motor operates according to the speed parameters and the forward and reverse rotation times parameters set by the controller, and the FPC product performs the bending operation;

[0016] Step e: after the servo drive motor has finished operating, the FPC product after the bending operation is removed from the first slider and the second slider, and the FPC product after the bending operation is inspected to confirm whether the FPC product is intact, thereby completing the bending durability test of the FPC product.

[0017] The movable pressure rod assembly includes a vertical sliding rod arranged vertically, and the upper end of the pressure rod mounting seat is provided with a mounting seat sliding groove vertically penetrating corresponding to the vertical sliding rod, and the vertical sliding rod is vertically slidably mounted in the mounting seat sliding groove;

[0018] The roller is rotatably mounted on the lower end of the vertical slide bar via a rotating shaft, the upper end of the vertical slide bar is equipped with a horizontally arranged support cross bar extending along the front-to-back direction, and the end of the support cross bar is equipped with a vertically arranged FPC pressure bar.

[0019] Among them, the upper end of the vertical slide bar is provided with a slide bar slot that completely penetrates the front and rear, the rear end of the supporting cross bar is inserted into the slide bar slot of the vertical slide bar, and the rear end of the supporting cross bar is fixed in the slide bar slot by a locking screw.

[0020] The front end of the supporting cross bar is provided with a cross bar slot which penetrates vertically, the FPC pressure rod is inserted into the cross bar slot of the supporting cross bar, and the FPC pressure rod is fixed in the cross bar slot by a locking bolt.

[0021] The left end of the first slider is screwed and fastened with a left fixing seat, the right end of the second slider is screwed and fastened with a right fixing seat, the left end of the driving screw is rotatably mounted on the left fixing seat through a bearing, and the right end of the driving screw is rotatably mounted on the right fixing seat through a bearing;

[0022] A first guide rail extending horizontally along the left and right directions is screwed on the upper surface of the fixture base between the left fixing seat and the right fixing seat, and the first sliding block and the second sliding block are respectively slidably mounted on the first guide rail.

[0023] The driving slide is provided with a slide block, the fixture base is screwed with a second guide rail which is arranged parallel to and spaced from the first guide rail, and the slide block is slidably mounted on the second guide rail.

[0024] Compared with the prior art, the present invention has the following beneficial effects, specifically: for the test fixture of the invention, during the bending test of the FPC product, when the servo drive motor drives the first slider and the second slider to move closer together through the bidirectional drive screw, the drive slide moves synchronously with the first slider or the second slider and the drive slope of the drive slide drives the movable pressure rod assembly to move downward. At this time, the movable pressure rod assembly presses the FPC product downward, thereby causing the FPC product located between the first slider and the second slider to bend downward in a directional manner. Through the above-mentioned test fixture and corresponding steps, the bending durability test method of the present invention can effectively realize the bending durability test of the FPC product, and can effectively realize the directional bending test of the FPC product. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below with the aid of the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0026] Figure 1 It is a schematic diagram of the structure of the test fixture of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the test fixture of the present invention from another perspective.

[0028] Figure 3 It is a cross-sectional schematic diagram of the test fixture of the present invention.

[0029] Figure 4 It is a cross-sectional schematic diagram of another position of the test fixture of the present invention.

[0030] exist Figures 1 to 4 Included are:

[0031] 1- fixture base; 21- first slider; 211- first internal threaded hole; 22- second slider; 221- second internal threaded hole; 31- first clamping block; 32- second clamping block; 41- servo drive motor; 42- bidirectional drive screw; 5- drive slide; 51- drive inclined plane; 52- slide slider; 6- pressure rod mounting seat; 61- mounting seat slide groove; 7- movable pressure rod assembly; 71- roller; 72- vertical slide rod; 721- slide rod slide groove; 73- rotating shaft; 74- supporting cross bar; 741- cross bar slide groove; 75- FPC pressure rod; 76- locking screw; 81- left fixed seat; 82- right fixed seat; 83- bearing; 91- first guide rail; 92- second guide rail; 100- FPC product. DETAILED DESCRIPTION

[0032] The present invention is described below in conjunction with specific implementation methods.

[0033] Embodiment 1, a bending durability testing method, comprising the following steps, specifically:

[0034] Step a, preparing a test fixture;

[0035] Among them, Figures 1 to 4 As shown, the test fixture includes a fixture base 1, and the fixture base 1 is horizontally slidably mounted with a first slider 21 and a second slider 22, the first slider 21 and the second slider 22 are horizontally aligned and spaced apart, the first slider 21 is provided with a first internal threaded hole 211 that runs horizontally through, and the second slider 22 is provided with a second internal threaded hole 221 that runs horizontally through; a first clamping block 31 is mounted on the upper surface of the first slider 21, and a second clamping block 32 is mounted on the upper surface of the second slider 22;

[0036] like Figures 1 to 4 As shown, the fixture base 1 is equipped with a servo drive motor 41, and the power output shaft of the servo drive motor 41 is connected with a bidirectional drive screw 42, the left threaded portion of the bidirectional drive screw 42 is screwed into the first internal threaded hole 211 of the first slider 21, and the right threaded portion of the bidirectional drive screw 42 is screwed into the second internal threaded hole 221 of the second slider 22;

[0037] like Figures 1 to 4 As shown, the first slider 21 or the second slider 22 is fastened with a driving slider 5, and the driving slider 5 is provided with an inclined driving inclined surface 51; the fixture base 1 is screwed with a pressure rod mounting seat 6 on the rear side of the driving slider 5, and the pressure rod mounting seat 6 is vertically slidably mounted with a movable pressure rod assembly 7, and the movable pressure rod assembly 7 is provided with a roller 71 that is in rolling contact with the driving inclined surface 51 of the driving slider 5;

[0038] Step b, electrically connecting the servo drive motor 41 to the controller, and setting the speed and the number of forward and reverse rotations through the controller;

[0039] Step c, placing the FPC product 100 to be tested, the left end of the FPC product 100 is clamped and fixed on the upper surface of the first slider 21 by the first clamping block 31, and the right end of the FPC product 100 is clamped and fixed on the upper surface of the second slider 22 by the second clamping block 32;

[0040] Step d, starting the servo drive motor 41 through the controller, the servo drive motor 41 operates according to the speed parameters and the forward and reverse rotation times parameters set by the controller, and the FPC product 100 performs a bending operation;

[0041] Step e: after the servo drive motor 41 has completed its operation, the FPC product 100 after the bending operation is removed from the first slider 21 and the second slider 22, and the FPC product 100 after the bending operation is inspected to confirm whether the FPC product 100 is intact, thereby completing the bending durability test of the FPC product 100.

[0042] It should be pointed out that, for the test fixture of the first embodiment of the present invention, during the bending test of the FPC product 100, when the servo drive motor 41 drives the first slider 21 and the second slider 22 to move closer together through the bidirectional drive screw 42, the drive slide 5 moves synchronously with the first slider 21 or the second slider 22, and the driving inclined surface 51 of the drive slide 5 drives the movable pressure rod assembly 7 to move downward. At this time, the movable pressure rod assembly 7 presses the FPC product 100 downward, thereby causing the FPC product 100 located between the first slider 21 and the second slider 22 to bend downward in a directional manner; when the servo drive motor 41 drives the first slider 21 and the second slider 22 to move away from each other through the bidirectional drive screw 42, the drive slide 5 moves synchronously with the first slider 21 or the second slider 22, and the driving inclined surface 51 of the drive slide 5 drives the movable pressure rod assembly 7 to move upward. At this time, the movable pressure rod assembly 7 retreats upward from the FPC product 100, thereby causing the FPC product 100 located between the first slider 21 and the second slider 22 to return to a flattened state.

[0043] Based on the above, it can be seen that through the test fixture of the first embodiment and the corresponding steps, the bending durability test method of the present invention can effectively implement the bending durability test of the FPC product 100, and can effectively implement the directional bending test of the FPC product 100.

[0044] Embodiment 2, as Figures 1 to 4 As shown, the difference between the second embodiment and the first embodiment is that the movable pressure rod assembly 7 includes a vertical sliding rod 72 arranged vertically, and the upper end of the pressure rod mounting seat 6 is provided with a vertically penetrating mounting seat groove 61 corresponding to the vertical sliding rod 72, and the vertical sliding rod 72 is vertically slidably installed in the mounting seat groove 61.

[0045] Among them, the roller 71 is rotatably installed on the lower end of the vertical slide bar 72 through the rotating shaft 73, and the upper end of the vertical slide bar 72 is equipped with a supporting cross bar 74 which is horizontally arranged and extends along the front-to-back direction, and the end of the supporting cross bar 74 is equipped with a vertically arranged FPC pressure rod 75.

[0046] For the movable pressure rod assembly 7 of the second embodiment, the movable pressure rod assembly 7 maintains rolling contact with the driving inclined surface 51 of the driving slide 5 through the roller 71 at the lower end of the vertical slide bar 72, and the pressure rod mounting seat 6 vertically guides the vertical slide bar 72 through its mounting seat slide groove 61 to ensure that the vertical slide bar 72 can be lifted and lowered stably and accurately.

[0047] It should be pointed out that when the movable pressure rod assembly 7 moves upward, the driving inclined surface 51 of the driving slide 5 pushes the roller 71 upward, thereby causing the vertical slide rod 72 to move upward. The upward moving vertical slide rod 72 drives the supporting cross bar 74 and the FPC pressure rod 75 to move upward synchronously; when the movable pressure rod assembly 7 moves downward, the movable pressure rod automatically moves downward due to its own gravity.

[0048] It should be explained that when the movable pressing rod assembly 7 presses the FPC product 100 downward and causes the FPC product 100 to be oriented and bent, the third embodiment presses the FPC product 100 via the FPC pressing rod 75 .

[0049] Embodiment three, as Figures 1 to 4 As shown, the difference between the third embodiment and the second embodiment is that a slide bar groove 721 which completely penetrates the upper end of the vertical slide bar 72 is provided, and the rear end of the supporting cross bar 74 is inserted into the slide bar groove 721 of the vertical slide bar 72, and the rear end of the supporting cross bar 74 is fixed in the slide bar groove 721 by a locking screw 76.

[0050] For the movable pressure rod assembly 7 of the third embodiment of the present invention, the staff can adaptively adjust the position of the FPC pressure rod 75 forward and backward according to the position of the FPC product 100. When adjusting, first loosen the locking screw 76 between the vertical slide bar 72 and the supporting cross bar 74, and then move the supporting cross bar 74 forward and backward along the slide bar groove 721; after the supporting cross bar 74 moves forward and backward into place, re-tighten the locking screw 76.

[0051] Embodiment 4, as Figures 1 to 4 As shown, the difference between the fourth embodiment and the second embodiment is that a vertically penetrating cross bar groove 741 is provided at the front end of the supporting cross bar 74, the FPC pressure rod 75 is inserted into the cross bar groove 741 of the supporting cross bar 74, and the FPC pressure rod 75 is fixed in the cross bar groove 741 by a locking bolt.

[0052] For the movable pressure rod assembly 7 of the fourth embodiment of the present invention, the staff can adaptively adjust the height position of the movable pressure rod. When adjusting, first loosen the locking screw 76 between the supporting cross bar 74 and the FPC pressure rod 75, and then vertically move the FPC pressure rod 75 along the cross bar slide groove 741 of the supporting cross bar 74; after the FPC pressure rod 75 is vertically adjusted into place, re-tighten the locking screw 76.

[0053] Embodiment 5, as Figures 1 to 4 As shown, the difference between the fifth embodiment and the first embodiment is that the left end side of the first slider 21 is screwed and fastened with a left fixed seat 81, the right end side of the second slider 22 is screwed and fastened with a right fixed seat 82, the left end of the driving screw is rotatably mounted on the left fixed seat 81 through a bearing 83, and the right end of the driving screw is rotatably mounted on the right fixed seat 82 through a bearing 83.

[0054] A first guide rail 91 extending horizontally along the left-right direction is screwed on the upper surface of the fixture base 1 between the left fixing seat 81 and the right fixing seat 82 , and the first slider 21 and the second slider 22 are slidably mounted on the first guide rail 91 .

[0055] Embodiment six, as Figure 1 , Figure 2 as well as Figure 4 As shown, the difference between the sixth embodiment and the first embodiment is that the driving slide 5 is provided with a slide block 52 , the fixture base 1 is screwed with a second guide rail 92 arranged parallel to the first guide rail 91 and spaced apart, and the slide block 52 is slidably mounted on the second guide rail 92 .

[0056] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A bending durability testing method, characterized in that: The following steps are included, specifically: Step a, preparing a test fixture; The test fixture comprises a fixture base (1), a first slider (21) and a second slider (22) are horizontally slidably mounted on the fixture base (1), the first slider (21) and the second slider (22) are horizontally aligned and spaced apart, the first slider (21) is provided with a first internal threaded hole (211) extending horizontally through, and the second slider (22) is provided with a second internal threaded hole (221) extending horizontally through; a first clamping block (31) is mounted on the upper surface of the first slider (21), and a second clamping block (32) is mounted on the upper surface of the second slider (22); The fixture base (1) is equipped with a servo drive motor (41), the power output shaft of the servo drive motor (41) is connected to a bidirectional drive screw rod (42), the left threaded portion of the bidirectional drive screw rod (42) is screwed into a first internal threaded hole (211) of the first slider (21), and the right threaded portion of the bidirectional drive screw rod (42) is screwed into a second internal threaded hole (221) of the second slider (22); The first slider (21) or the second slider (22) is fixedly mounted with a driving slider (5), and the driving slider (5) is provided with an inclined driving inclined surface (51); the fixture base (1) is screwed with a pressure rod mounting seat (6) on the rear side of the driving slider (5), and the pressure rod mounting seat (6) is vertically slidably mounted with a movable pressure rod assembly (7), and the movable pressure rod assembly (7) is provided with a roller (71) that is in rolling contact with the driving inclined surface (51) of the driving slider (5); Step b, electrically connecting the servo drive motor (41) to the controller, and setting the rotation speed and the number of forward and reverse rotations through the controller; Step c, placing the FPC product (100) to be tested, wherein the left end of the FPC product (100) is clamped and fixed to the upper surface of the first slider (21) by a first clamping block (31), and the right end of the FPC product (100) is clamped and fixed to the upper surface of the second slider (22) by a second clamping block (32); Step d, starting the servo drive motor (41) through the controller, the servo drive motor (41) operates according to the speed parameters and the forward and reverse rotation times parameters set by the controller, and the FPC product (100) performs a bending operation; Step e: After the servo drive motor (41) has completed its operation, the FPC product (100) that has undergone the bending operation is removed from the first slider (21) and the second slider (22), and the FPC product (100) that has undergone the bending operation is tested to confirm whether the FPC product (100) is intact, thereby completing the bending durability test of the FPC product (100).

2. A bending durability testing method according to claim 1, characterized in that: The movable pressure rod assembly (7) includes a vertical slide rod (72) arranged vertically, and the upper end of the pressure rod mounting seat (6) is provided with a mounting seat slide groove (61) that vertically penetrates the vertical slide rod (72), and the vertical slide rod (72) is vertically slidably mounted in the mounting seat slide groove (61); The roller (71) is rotatably mounted on the lower end of the vertical slide bar (72) via a rotating shaft (73); the upper end of the vertical slide bar (72) is provided with a support cross bar (74) arranged horizontally and extending in the front-rear direction; the end of the support cross bar (74) is provided with a vertically arranged FPC pressure bar (75).

3. A bending durability testing method according to claim 2, characterized in that: The upper end of the vertical slide bar (72) is provided with a slide bar slot (721) that completely penetrates the vertical slide bar (72) from front to back, the rear end of the support cross bar (74) is inserted into the slide bar slot (721) of the vertical slide bar (72), and the rear end of the support cross bar (74) is fixed in the slide bar slot (721) by a locking screw (76).

4. A bending durability testing method according to claim 2, characterized in that: A crossbar sliding groove (741) penetrating vertically is provided at the front end of the supporting crossbar (74), the FPC pressure rod (75) is inserted into the crossbar sliding groove (741) of the supporting crossbar (74), and the FPC pressure rod (75) is fixed in the crossbar sliding groove (741) by means of a locking bolt.

5. The bending durability testing method according to claim 1, characterized in that: The left end side of the first sliding block (21) is screwed and fastened with a left fixing seat (81), the right end side of the second sliding block (22) is screwed and fastened with a right fixing seat (82), the left end of the driving screw rod is rotatably mounted on the left fixing seat (81) via a bearing (83), and the right end of the driving screw rod is rotatably mounted on the right fixing seat (82) via a bearing (83); A first guide rail (91) extending horizontally in the left-right direction is screwed on the upper surface of the fixture base (1) between the left fixed seat (81) and the right fixed seat (82), and the first sliding block (21) and the second sliding block (22) are respectively slidably mounted on the first guide rail (91).

6. A bending durability testing method according to claim 1, characterized in that: The driving slide seat (5) is provided with a slide block (52), the fixture base (1) is screwed with a second guide rail (92) arranged parallel to and spaced from the first guide rail (91), and the slide block (52) is slidably mounted on the second guide rail (92).

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