Device and method for testing soft circuits on optical communication devices

Abstract

The present invention belongs to the field of circuit board testing technology, and in particular, relates to a device and method for testing flexible circuits on optical communication devices. To address the problem in the prior art that simple forward and reverse bending cannot simulate the normal operation of a circuit board under extreme bending conditions, the following solution is proposed: a top plate having an overall elongated structure, a downwardly curved, inwardly recessed groove being stamped and formed in the middle of the top plate at the front edge, a rotating rod bearing seat being fixed to the middle of the top plate's upper surface near the rear side, a main rotating rod being rotatably connected to the middle of the rotating rod bearing seat, extending directly above the middle of the inwardly recessed groove, and a rotating fixing bar and a rubbing gear being fixed to the front and rear ends of the main rotating rod. The present invention can simultaneously bend the flexible circuit board body twice at two symmetrical positions near the middle within a single bending test cycle, with the two bending positions bending in different directions. Furthermore, the tensile strength of the flexible circuit board body can be tested.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board testing, and in particular to a device and method for testing a soft circuit on an optical communication device. Background Art

[0002] Testing flexible printed circuits (FPCs) is crucial because they can bend and flex while still transmitting information, making them crucial in electronic products. Testing the performance of FPCs ensures their quality and reliability, preventing issues in real-world applications.

[0003] Existing technologies only perform simple voltage and appearance tests on flexible circuit boards before they leave the factory, while most of them ignore the bending test. In actual use, the normal communication of each circuit is often premised on its normal operation after multiple bends. Therefore, the bending test is an important detection indicator. However, the bending test in the existing technology only bends it in the forward and reverse directions. This bending method cannot represent its ultimate performance. Therefore, we propose a new detection device. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a device and method for testing soft circuits on optical communication devices, which solves the technical problem that the simple forward and reverse bending in the prior art cannot simulate whether the circuit board works normally under extreme bending conditions in reality.

[0005] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0006] In the first aspect, a soft circuit testing device on an optical communication device is provided, which includes a top plate with an overall long strip structure, a downward-bending arc-shaped recessed groove stamped in the middle of the top plate at the front edge, a rotating rod bearing seat is fixed to the middle of the upper surface of the top plate near the rear side, the middle of the rotating rod bearing seat is rotatably connected to a main rotating rod extending directly above the middle of the arc-shaped recessed groove, and a rotating fixing bar and a rubbing gear are respectively fixed at the front and rear ends of the main rotating rod, and smooth coiled rods parallel to each other and symmetrically distributed about the axis of the main rotating rod are respectively fixed on the front of the rotating fixing bar near both ends; circuit board monitor interfaces for connecting to the flexible circuit board body are respectively embedded near the left and right ends of the upper surface of the top plate, and mutually symmetrical clamping devices are respectively provided at the left and right edges of the top of the arc-shaped recessed groove on the upper surface of the top plate.

[0007] Preferably, a display is fixed on the upper surface of the top plate near the rear side of one end, and the signal input end of the display is connected to the two circuit board monitor interfaces through a signal line; the signal transmission effect of the flexible circuit board body under the detection state can be monitored in real time through the display.

[0008] Preferably, the front and rear sides of the top plate are respectively fixed with a front panel and a rear panel that are parallel to each other and vertical, and the rear side of the rear panel is fixed with a groove-shaped slide rail with an upward and horizontal opening near the top, and a propulsion rack that is meshed with the rubbing gear is slidably connected in the slide groove of the groove-shaped slide rail, and a buffer spring is fixed to one end of the propulsion rack close to the display, and a reciprocating slider is fixed to the end of the buffer spring away from the propulsion rack, and the reciprocating slider is slidably connected in the slide groove of the groove-shaped slide rail; a motor hole is opened at one end of the rear panel close to the reciprocating slider, and a reduction motor is embedded in the motor hole, a rotating wheel is fixed at the top end of the output shaft of the reduction motor through the motor hole, and the rotating wheel is at the same height as the reciprocating slider and is located at the end of the groove-shaped slide rail, and the rotating wheel is rotatably connected to a connecting rod near the circumferential edge on the side of the rotating wheel away from the reduction motor; and the other end of the connecting rod is hinged to the side of the reciprocating slider.

[0009] Preferably, a notch is provided at the bottom of one end of the groove-shaped slide rail near the rotating wheel, and the notch is adapted to the rotation trajectory of the connecting rod; the front and rear ends of the arc-shaped sunken groove are respectively fixed with a hatch side cover 1 and a hatch side cover 2 with an overall semicircular structure, and the hatch side cover 2 is provided with a plug hole near the bottom end, and the front panel 1 is provided with a circular hole near the middle, the height of the circular hole is lower than the height of the bottom of the arc-shaped sunken groove, and a liquid level regulating barrel with an opening facing the front and an overall cylindrical barrel structure is inserted into the circular hole, and the bottom of the liquid level regulating barrel A through hole 1 is opened, and a connecting pipe is inserted between the through hole 1 and the socket, and a piston plate is slidably connected to the liquid level regulating barrel; the bottom of the arc-shaped sunken groove, the cabin side cover 1 and the cabin side cover 2 constitute a liquid storage chamber, and the liquid storage chamber contains a detection liquid. When in use, the piston plate is pushed toward the bottom of the liquid level regulating barrel to squeeze the detection liquid into the liquid storage chamber, and then the moving flexible circuit board body can continuously contact the detection liquid during detection to detect its anti-moisture or anti-corrosion effect under repeated bending.

[0010] Preferably, a shaft rod frame extending to the center of the liquid level regulating barrel is fixed at the barrel mouth of the liquid level regulating barrel, and an internal threaded tube is embedded in the end of the shaft rod frame, a transmission screw is rotatably connected in the internal threaded tube, and a rotating disk is fixed at the end of the transmission screw close to the piston plate, and a limit frame ring is fixed on the surface of the piston plate to form a rotational connection with the rotating disk; a hexagonal nut is fixed at the end of the transmission screw away from the piston plate, and by setting a transmission screw rotatably connected to the surface of the piston disk, when it is necessary to control the rise and fall of the liquid level in the liquid storage chamber, it is only necessary to turn the hexagonal nut.

[0011] Preferably, a liquid level display hole is provided in the middle of the first compartment side cover, and a transparent plate is provided in the liquid level display hole so that the liquid level in the liquid storage cavity can be observed in real time.

[0012] Preferably, the clamping device includes a corrugated pad fixed on the upper surface of the top plate near the edge of the arc-shaped sunken groove, the top of the corrugated pad is two semi-cylinders whose axis lines are parallel to each other, and the axis lines of the semi-cylinders are parallel to the axis lines of the arc-shaped sunken groove; the upper surface of the top plate is provided with symmetrical hole positions 2 for fixing the circuit board monitor interface near both ends, and two symmetrical rectangular holes 1 are provided at both ends of the top plate, and the lower surface of the top plate is fixed with fixing ears on the side surfaces near the two rectangular holes 1, and the same transmission rod is rotatably connected between the two fixing ears, and the transmission rod is fixed with arc-shaped pressure rods that are symmetrical to each other and whose top ends pass through the top plate near both ends, and the arc-shaped pressure rods pass through the corresponding rectangular holes 1. , and the same inner rod is fixed between the top ends of the two arc-shaped pressure rods at the same end of the top plate, and a rubber sleeve is fixed on the circumferential outer wall of the inner rod; and after the rubber sleeve is pressed down, it is located between the two semi-cylinders; then the flexible circuit board body is clamped; a worm gear is fixed in the middle of the transmission rod, and a fixing hole position 1 is opened at both ends of the top plate near the circumferential edge of the worm gear, and a C-shaped worm rack is fixed in the fixing hole position 1, and the middle of the worm rack is rotatably connected to an adjusting worm that meshes with the worm gear, and a rocker is fixed to the top of the adjusting worm; when the flexible circuit board body needs to be clamped, only the rocker is turned to slowly press the rubber sleeve down, and then it is pressed tightly against the corrugated pad on the side.

[0013] Preferably, the upper surface of the top plate is hinged with symmetrical hinged fixing blocks on both sides near the rotating fixing bar, and the same electric heater is fixed between the top ends of the two hinged fixing blocks, the front of the electric heater is fixed with a rear baffle, and the front of the rear baffle is fixed with an arc-shaped cover near the top end, the lower surface of the arc-shaped cover is fixed with an electric heating tube attached to the lower surface of the arc-shaped cover and in a zigzag structure, and the span of the arc-shaped cover is adapted to the span of the arc-shaped sunken groove; the upper surface of the top plate is fixed with limiting pads near both sides, and the arc-shaped cover and the rear baffle can be flipped back as a whole before use to reserve space for installing the flexible circuit board body, making room for installation, and also allowing high temperature resistance testing during bending experiments.

[0014] Preferably, a thermal insulation curtain rolled together is fixed at the edge of one end of the upper surface of the arc-shaped cover away from the rear baffle, and a plurality of magnets are fixed to the end of the thermal insulation curtain away from the arc-shaped cover; the thermal insulation curtain can be lowered during the high temperature resistance test to form a roughly enclosed space, thereby improving the thermal insulation effect.

[0015] In a second aspect, a method for testing a soft circuit on an optical communication device is provided, comprising the following steps:

[0016] S1: During the test preparation phase, the curved cover and rear baffle are flipped back to open, leaving space for installing the flexible circuit board. The two rockers are then rotated in opposite directions to separate and lift the two rubber sleeves from their corresponding corrugated pads.

[0017] S2: During the circuit board installation phase, the middle portion of the flexible circuit board to be tested is coiled in a Z-shape around two smooth coiling rods. The two ends of the flexible circuit board are then passed through the rubber sleeves and corrugated pads on the same side, and finally connected to the circuit board monitor interface. After the connection is completed, the two rockers are rotated forward to clamp the two ends of the flexible circuit board through the rubber sleeves.

[0018] S3: During the bending and tensile performance testing phase, the reduction motor is started, and the main rotary rod is driven to perform periodic forward and reverse motions through the coordination of the rotating wheel, connecting rod, propulsion rack, reciprocating slider, and buffer spring. Within one bending test cycle, two synchronous bending operations are performed on the two symmetrical positions near the center of the flexible circuit board body. At the same time, the elastic characteristics of the buffer spring are used to complete the tensile performance test of the flexible circuit board body.

[0019] S4: Environmental tolerance test stage: While conducting the bending test, the transmission screw is rotated to push the piston plate in the liquid level regulating barrel toward the bottom of the liquid level regulating barrel, pressing the test liquid into the liquid storage chamber, so that the liquid contacts the flexible circuit board body in the moving state, and the moisture or corrosion resistance of the flexible circuit board body during repeated bending is tested.

[0020] The beneficial effects of the present invention are:

[0021] 1. By setting up a main rotating rod that can frequently rotate forward and reverse, and cooperating with two smooth coiled rods that can twist the flexible circuit board body to be tested together, the flexible circuit board body can be bent twice at two symmetrical positions near the middle within one cycle of the bending test, and the bending directions of the two bending positions are different. At the same time, the tensile performance of the flexible circuit board body can also be tested.

[0022] 2. Through the reciprocating slider and buffer spring, after twisting one circle, if the flexible circuit board body has been tightened and the connecting rod has not reached the near stop point or the far stop point, the connecting rod continues to advance. The buffer spring can reduce part of the energy, preventing the main rotary rod from continuing to rotate and converting it into continuous tightening of the flexible circuit board body, which is then used to test its tensile effect.

[0023] 3. By setting the electric heating tube in a "Z"-shaped structure under the arc cover, the arc cover and the rear baffle can be opened backward as a whole before use to reserve space for installing the flexible circuit board body, making room for installation and performing high temperature resistance tests during bending experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a flexible circuit testing device on an optical communication device proposed by the present invention when performing a bending resistance test;

[0025] Figure 2 This is a schematic diagram of the rear side upward structure of a flexible circuit testing device for optical communication devices proposed by the present invention;

[0026] Figure 3 This is a schematic diagram of the rear structure of a flexible circuit testing device on an optical communication device proposed by the present invention when performing a high temperature resistance test;

[0027] Figure 4 This is a top view of a flexible circuit testing device on an optical communication device proposed by the present invention during a high temperature resistance test;

[0028] Figure 5 A soft circuit testing device for optical communication devices proposed by the present invention Figure 4 Schematic diagram of the cross-sectional structure along line AA;

[0029] Figure 6 This is a schematic diagram of the overall structure of a soft circuit testing device on an optical communication device proposed by the present invention before testing;

[0030] Figure 7 This is a side view of a flexible circuit testing device on an optical communication device proposed by the present invention before testing;

[0031] Figure 8 This is an exploded view of a liquid storage chamber in a flexible circuit testing device for an optical communication device proposed by the present invention;

[0032] Figure 9 This is a schematic diagram of a half-cutaway three-dimensional structure of a flexible circuit testing device for an optical communication device during testing, as proposed by the present invention;

[0033] Figure 10 A soft circuit testing device for optical communication devices proposed by the present invention Figure 9 Schematic diagram of the enlarged structure at point B in the middle.

[0034] In the figure: 1. Front panel 1; 2. Cabin side cover 1; 201. Cabin side cover 2; 202. Jack; 3. Liquid level display hole; 4. Liquid level adjustment barrel; 5. Shaft rod frame; 6. Rocker; 7. Worm gear; 8. Top plate; 801. Arc-shaped sunken groove; 802. Rectangular hole 1; 803. Fixing hole position 1; 804. Symmetrical hole position 2; 805. Round hole; 9. Arc-shaped pressure rod; 10. Rubber sleeve; 11. Arc-shaped cover; 12. Insulation roller curtain; 121. Magnet; 13. Electric heating pipe; 1301. Electric heater; 14. Smooth coiled rod; 15. Rear baffle; 16. Flexible circuit board Main body; 17. Rotating wheel; 18. Display; 19. Rear panel; 20. Connecting pipe; 21. Grooved slide rail; 22. Rubbing gear; 23. Connecting rod; 24. Motor hole; 25. Transmission rod; 2501. Fixing ear; 26. Worm rack; 261. Adjusting worm; 27. Main rotating rod; 271. Rotating fixing bar; 272. Rotating rod bearing seat; 28. Propulsion rack; 29. ​​Buffer spring; 30. Reciprocating slider; 31. Articulated fixing block; 32. Transmission screw; 33. Circuit board monitor interface; 34. Corrugated pad; 35. Limit pad; 36. Reducer motor. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In this embodiment, refer to Figures 1-10 The present invention provides a soft circuit testing device for optical communication devices, which includes a top plate 8 with an overall long strip structure. A downward-curved arc-shaped inward-sunken groove 801 is stamped in the middle of the top plate 8 at the front edge. The groove width of the arc-shaped inward-sunken groove 801 is greater than the width of the flexible circuit board body 16, and the left and right spans of the arc-shaped inward-sunken groove 801 are greater than 1.5 times the length of the rotating fixed bar 271. A rotating rod bearing seat 272 is fixed to the middle of the upper surface of the top plate 8 near the rear side. The middle of the rotating rod bearing seat 272 is rotatably connected to a main rotating rod 27 extending directly above the middle of the arc-shaped inward-sunken groove 801, and the front and rear ends of the main rotating rod 27 are respectively fixed to the rotating fixed bar 271 and the rubbing gear 22.

[0037] The front of the rotating fixing bar 271 is fixed with smooth coiled rods 14 near both ends, which are parallel to each other and symmetrically distributed about the axis of the main rotating rod 27; the upper surface of the top plate 8 is embedded with circuit board monitor interfaces 33 for connecting to the flexible circuit board body 16 near the left and right ends, and the upper surface of the top plate 8 is provided with symmetrical clamping devices at the left and right edges of the top of the arc-shaped sunken groove 801.

[0038] This solution provides a main rotating rod 27 that can frequently rotate forward and reverse, and cooperates with two smooth coiled rods 14 that can twist the flexible circuit board body 16 to be tested together. During one cycle of the bending test, the flexible circuit board body 16 can be bent twice simultaneously at two symmetrical positions near the middle, and the bending directions of the two bending positions are different. At the same time, the tensile performance of the flexible circuit board body 16 can also be tested.

[0039] Reference Figure 1 、 Figure 5 A display 18 is fixed on the upper surface of the top plate 8 near the rear side of one end, and the signal input end of the display 18 is connected to the two circuit board monitor interfaces 33 through a signal line; the display 18 can monitor the signal transmission effect of the flexible circuit board body 16 in the detection state in real time.

[0040] Reference Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 8 The front and rear sides of the top plate 8 are respectively fixed with a front panel 1 and a rear panel 19 that are parallel and vertical to each other, and a grooved slide rail 21 with an upward and horizontal opening is fixed near the top of the rear side of the rear panel 19. A propulsion rack 28 that meshes with the rubbing gear 22 is slidably connected in the slide groove of the grooved slide rail 21. A buffer spring 29 is fixed to the end of the propulsion rack 28 close to the display 18, and a reciprocating slider 30 is fixed to the end of the buffer spring 29 away from the propulsion rack 28. The reciprocating slider 30 is also slidably connected in the slide groove of the grooved slide rail 21.

[0041] A motor hole 24 is opened at one end of the rear panel 19 near the reciprocating slider 30, and a reduction motor 36 is embedded in the motor hole 24. The top end of the output shaft of the reduction motor 36 passes through the motor hole 24 and is fixed with a rotating wheel 17. The rotating wheel 17 is at the same height as the reciprocating slider 30 and is located at the end of the groove-shaped slide rail 21. The side of the rotating wheel 17 away from the reduction motor 36 is rotatably connected to the connecting rod 23 near the circumferential edge, and the other end of the connecting rod 23 is hinged to the side of the reciprocating slider 30; through the provided reciprocating slider 30 and the buffer spring 29, after twisting one circle, if the flexible circuit board body 16 has been tightened and the connecting rod 23 has not reached the near stop point or the far stop point, if the connecting rod 23 continues to advance, the buffer spring 29 can reduce part of the energy to prevent the main rotating rod 27 from continuing to rotate and converting it into continuous tightening of the flexible circuit board body 16, which is then used to test its tensile effect.

[0042] Reference Figure 2-Figure 3 、 Figure 5, a notch is provided at the bottom of one end of the groove-shaped slide rail 21 near the rotating wheel 17, and the notch is adapted to the rotation trajectory of the connecting rod 23; the front and rear ends of the arc-shaped sunken groove 801 are respectively fixed with a cabin side cover 2 and a cabin side cover 201 with an overall semicircular structure, and the cabin side cover 201 has a socket 202 near the bottom, and a circular hole 805 is provided near the middle of the front panel 1, the height of the circular hole 805 is lower than the height of the bottom of the arc-shaped sunken groove 801, and a liquid level regulating barrel 4 with an opening facing the front and an overall cylindrical barrel structure is inserted in the circular hole 805, and the liquid level regulating barrel 4 with an opening facing the front and an overall cylindrical barrel structure is inserted in the circular hole 805, A through hole 1 is provided at the bottom of the regulating barrel 4, and a connecting pipe 20 is inserted between the through hole 1 and the socket 202. A piston plate is slidably connected to the liquid level regulating barrel 4; the bottom of the arc-shaped sunken groove 801, the compartment side cover 1 2 and the compartment side cover 2 201 constitute a liquid storage chamber, and the liquid storage chamber contains the detection liquid. When in use, the piston plate is pushed toward the bottom of the liquid level regulating barrel 4 to squeeze the detection liquid into the liquid storage chamber, and then the moving flexible circuit board body 16 can continuously contact the detection liquid during detection to detect its anti-moisture or anti-corrosion effect under repeated bending.

[0043] Reference Figure 5-Figure 6 A shaft rod frame 5 extending to the center of the liquid level regulating barrel 4 is fixed at the barrel mouth of the liquid level regulating barrel 4, and an internal threaded tube is embedded at the end of the shaft rod frame 5, in which a transmission screw 32 is rotatably connected, and a rotating disk is fixed at one end of the transmission screw 32 close to the piston plate, and a limit frame ring is fixed on the surface of the piston plate to form a rotational connection with the rotating disk; a hexagonal nut is fixed at the end of the transmission screw 32 away from the piston plate, and by setting a transmission screw 32 rotatably connected to the surface of the piston disk, when it is necessary to control the liquid level in the liquid storage chamber to rise or fall, it is only necessary to turn the hexagonal nut.

[0044] Reference Figure 1 A liquid level display hole 3 is provided in the middle of the compartment side cover 2, and a transparent plate is provided in the liquid level display hole 3, so that the liquid level in the liquid storage cavity can be observed in real time.

[0045] Reference Figure 2 、 Figure 6-Figure 8 The clamping device includes a corrugated pad 34 fixed on the upper surface of the top plate 8 near the edge of the arc-shaped sunken groove 801. The top of the corrugated pad 34 is two semi-cylinders with parallel axis lines, and the axis lines of the semi-cylinders are parallel to the axis line of the arc-shaped sunken groove 801; the upper surface of the top plate 8 is respectively provided with symmetrical hole positions 2 804 for fixing the circuit board monitor interface 33 near both ends, and two symmetrical rectangular holes 1 802 are provided at both ends of the top plate 8.

[0046] Fixing ears 2501 are fixed to the sides of the lower surface of the top plate 8 near the two rectangular holes 802, and the same transmission rod 25 is rotatably connected between the two fixing ears 2501. The transmission rod 25 is fixed with arc-shaped pressure rods 9 symmetrical to each other and with the top ends passing through the top plate 8 near both ends. The arc-shaped pressure rods 9 pass through the corresponding rectangular holes 802, and the same inner rod is fixed between the top ends of the two arc-shaped pressure rods 9 at the same end of the top plate 8. The outer wall of the inner rod is sleeved and fixed with a rubber sleeve 10, and after the rubber sleeve 10 is pressed down, it is located between the two semi-cylinders, thereby clamping the flexible circuit board body 16.

[0047] A worm gear 7 is fixed in the middle of the transmission rod 25, and fixing holes 803 are opened at both ends of the top plate 8 near the circumferential edge of the worm gear 7. A C-shaped worm rack 26 is fixed in the fixing hole 803, and the middle of the worm rack 26 is rotatably connected to an adjusting worm 261 that meshes with the worm gear 7, and a rocker 6 is fixed to the top of the adjusting worm 261; when the flexible circuit board body 16 needs to be clamped, only the rocker 6 needs to be turned to slowly press the rubber sleeve 10 down, and then press it tightly against the corrugated pad 34 on the side.

[0048] Reference Figure 3 and Figure 6 , the upper surface of the top plate 8 is hinged with symmetrical hinged fixing blocks 31 on both sides near the rotary fixing bar 271, and the same electric heater 1301 is fixed between the top ends of the two hinged fixing blocks 31, and the front of the electric heater 1301 is fixed with a rear baffle 15, and the front of the rear baffle 15 is fixed with an arc-shaped cover 11 near the top, and the lower surface of the arc-shaped cover 11 is fixed with an electric heating tube 13 in a zigzag structure attached to the lower surface of the arc-shaped cover 11, and the span of the arc-shaped cover 11 is adapted to the span of the arc-shaped sunken groove 801; the upper surface of the top plate 8 is fixed with limiting pads 35 on both sides, and the arc-shaped cover 11 and the rear baffle 15 can be opened backward as a whole before use, reserving space for installing the plug-in flexible circuit board body 16, making room for installation, and also allowing high temperature resistance testing during the bending experiment.

[0049] Reference Figure 6 、 Figure 9-10 A thermal insulation curtain 12 rolled together is fixed at the edge of one end of the upper surface of the arc-shaped cover 11 away from the rear baffle 15, and a plurality of magnets 121 are fixed to the end of the thermal insulation curtain 12 away from the arc-shaped cover 11; the thermal insulation curtain 12 can be lowered during the high temperature resistance test to form a roughly enclosed space to improve the thermal insulation effect.

[0050] This solution also provides a method for testing a soft circuit on an optical communication device, comprising the following steps:

[0051] S1: During the test preparation phase, the arc-shaped cover 11 and the rear baffle 15 are flipped back and opened as a whole, leaving space for installing the flexible circuit board body 16. The two rockers 6 are then rotated in opposite directions to separate and lift the two rubber sleeves 10 from the corresponding corrugated pads 34.

[0052] S2: During the circuit board installation phase, the middle portion of the flexible circuit board body 16 to be tested is coiled in a Z-shape around two smooth coiling rods 14. The ends of the flexible circuit board body 16 are then passed through the rubber sleeves 10 and corrugated pads 34 on the same side, and finally connected to the circuit board monitor interface 33. After the connection is completed, the two rocker arms 6 are rotated forward to clamp the ends of the flexible circuit board body 16 through the rubber sleeves 10.

[0053] S3: During the bending and tensile performance testing phase, the reduction motor 36 is started, and the main rotary rod 27 is driven to perform periodic forward and reverse motions through the cooperation of the rotating wheel 17, the connecting rod 23, the propulsion rack 28, the reciprocating slider 30, and the buffer spring 29. During one bending test cycle, two synchronous bending operations are performed on two symmetrical positions near the center of the flexible circuit board body 16. At the same time, the elastic properties of the buffer spring 29 are utilized to complete the tensile performance test of the flexible circuit board body 16.

[0054] S4: Environmental tolerance test stage. While performing the bending test, the transmission screw 32 is rotated to push the piston plate in the liquid level regulating barrel 4 toward the bottom of the liquid level regulating barrel 4, pressing the test liquid into the liquid storage chamber so that the liquid contacts the flexible circuit board body 16 in a moving state. The moisture or corrosion resistance of the flexible circuit board body 16 during repeated bending is tested.

[0055] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A soft circuit testing device for an optical communication device, comprising a top plate (8) having an overall long strip structure, characterized in that: A downwardly curved arc-shaped recessed groove (801) is stamped and formed in the middle of the top plate (8) at the front edge, and a rotating rod bearing seat (272) is fixed to the middle of the upper surface of the top plate (8) near the rear side. The middle of the rotating rod bearing seat (272) is rotatably connected to a main rotating rod (27) extending directly above the middle of the arc-shaped recessed groove (801), and a rotating fixing bar (271) and a rubbing gear (22) are fixed to the front and rear ends of the main rotating rod (27), and a smooth coiled rod (14) is fixed to the front of the rotating fixing bar (271) near both ends; a circuit board monitor interface (33) is respectively embedded on the upper surface of the top plate (8) near the left and right ends, and a clamping device is respectively provided on the left and right edges of the upper surface of the top plate (8) at the top of the arc-shaped recessed groove (801); A display (18) is fixed to the upper surface of the top plate (8) near the rear side of one end thereof, and a signal input end of the display (18) is connected to two circuit board monitor interfaces (33) via a signal line; The front and rear sides of the top plate (8) are respectively fixed with a front panel (1) and a rear panel (19) that are parallel and vertical to each other, and a groove-shaped slide rail (21) with an upward opening and horizontal is fixed near the top of the rear side of the rear panel (19), and a propulsion rack (28) that meshes with the rubbing gear (22) is slidably connected in the slide groove of the groove-shaped slide rail (21), and a buffer spring (29) is fixed to the end of the propulsion rack (28) close to the display (18), and a reciprocating slider (30) is fixed to the end of the buffer spring (29) away from the propulsion rack (28), and the reciprocating slider (30) is slidably connected In the groove of the groove-shaped slide rail (21); a motor hole (24) is opened at one end of the rear panel (19) close to the reciprocating slider (30), and a reduction motor (36) is embedded in the motor hole (24), and the top end of the output shaft of the reduction motor (36) passes through the motor hole (24) and is fixed with a rotating wheel (17), and the rotating wheel (17) is at the same height as the reciprocating slider (30) and is located at the end of the groove-shaped slide rail (21), and the side of the rotating wheel (17) away from the reduction motor (36) is rotatably connected to the connecting rod (23) near the circumferential edge, and the other end of the connecting rod (23) is hinged to the side of the reciprocating slider (30).

2. The soft circuit testing device for optical communication devices according to claim 1, characterized in that: The grooved slide rail (21) is provided with a notch at the bottom of one end of the groove near the rotating wheel (17), and the notch is adapted to the rotation trajectory of the connecting rod (23); the front and rear ends of the arc-shaped sunken groove (801) are respectively fixed with a cabin side cover (2) and a cabin side cover (201) of an overall semicircular structure, and the cabin side cover (201) is provided with a socket (202) near the bottom end, and the front panel (1) is provided with a circular hole (805) near the middle, and the height of the circular hole (805) is lower than the arc-shaped sunken groove (801). The bottom of the groove (801) is of a height of 1.50mm, and a liquid level regulating barrel (4) with an opening facing the front and an overall cylindrical barrel structure is inserted into the circular hole (805), a through hole 1 is opened at the bottom of the liquid level regulating barrel (4), and a connecting pipe (20) is inserted between the through hole 1 and the insertion hole (202), and a piston plate is slidably connected in the liquid level regulating barrel (4); the bottom of the arc-shaped sunken groove (801), the cabin side cover 1 (2) and the cabin side cover 2 (201) constitute a liquid storage chamber for containing the detection liquid.

3. The soft circuit testing device for optical communication devices according to claim 2, characterized in that: A shaft frame (5) extending toward the center of the liquid level regulating barrel (4) is fixed at the barrel mouth of the liquid level regulating barrel (4), and an internal threaded tube is embedded at the end of the shaft frame (5), a transmission screw (32) is rotatably connected in the internal threaded tube, and a rotating disc is fixed at one end of the transmission screw (32) close to the piston plate, and a limit frame ring is fixed on the surface of the piston plate to form a rotational connection with the rotating disc; a hexagonal nut is fixed at one end of the transmission screw (32) away from the piston plate.

4. The soft circuit testing device for optical communication devices according to claim 3, characterized in that: A liquid level display hole (3) is provided in the middle of the cabin side cover (2), and a transparent plate is provided in the liquid level display hole (3).

5. The soft circuit testing device for optical communication devices according to claim 4, characterized in that: The clamping device includes a corrugated pad (34) fixed on the upper surface of the top plate (8) near the edge of the arc-shaped sunken groove (801), the top of the corrugated pad (34) is a semi-cylinder with two parallel axis lines, and the axis lines of the semi-cylinder are parallel to the axis line of the arc-shaped sunken groove (801); the upper surface of the top plate (8) is respectively provided with symmetrical hole positions 2 (804) for fixing the circuit board monitor interface (33) near both ends, and two mutually symmetrical rectangular holes 1 (802) are provided at both ends of the top plate (8); the lower surface of the top plate (8) is fixed with fixed ears (2501) on the side surfaces near the two rectangular holes 1 (802), and the two fixed ears (2501) are rotatably connected to the same transmission rod (25), and the transmission rod (25) is respectively fixed with mutually symmetrical holes near both ends. A symmetrical arc-shaped pressure rod (9) with a top end passing through the top plate (8) is provided. The arc-shaped pressure rod (9) passes through a corresponding rectangular hole (802). A same inner rod is fixed between the top ends of the two arc-shaped pressure rods (9) at the same end of the top plate (8). A rubber sleeve (10) is fixedly sleeved on the circumferential outer wall of the inner rod. The rubber sleeve (10) is located between the two semi-cylinders after being pressed down. A worm wheel (7) is fixed in the middle of the transmission rod (25). A fixing hole (803) is provided at both ends of the top plate (8) near the circumferential edge of the worm wheel (7). A worm rack (26) with a C-shaped structure is fixed in the fixing hole (803). An adjusting worm (261) meshing with the worm wheel (7) is rotatably connected in the middle of the worm rack (26). A rocker (6) is fixed to the top end of the adjusting worm (261).

6. The soft circuit testing device for optical communication devices according to claim 5, characterized in that: The upper surface of the top plate (8) is hinged with symmetrical hinged fixing blocks (31) on both sides near the rotary fixing bar (271), and the same electric heater (1301) is fixed between the top ends of the two hinged fixing blocks (31). The front of the electric heater (1301) is fixed with a rear baffle (15), and the front of the rear baffle (15) is fixed with an arc-shaped cover (11) with a downward opening near the top end. The lower surface of the arc-shaped cover (11) is affixed with an electric heating pipe (13), and the span of the arc-shaped cover (11) is adapted to the span of the arc-shaped sunken groove (801); the upper surface of the top plate (8) is fixed with limiting pads (35) on both sides near the top end.

7. The soft circuit testing device for optical communication devices according to claim 6, characterized in that: A rolled-up heat-insulating roller blind (12) is fixed to an edge of one end of the upper surface of the arc-shaped cover (11) away from the rear baffle (15), and a plurality of magnets (121) are fixed to one end of the heat-insulating roller blind (12) away from the arc-shaped cover (11).

8. A testing method applied to the soft circuit testing device on an optical communication device according to claim 7, characterized in that: The steps include: S1: During the test preparation phase, the arc-shaped cover (11) and the rear baffle (15) are first flipped back as a whole to open the space for installing the flexible circuit board body (16); then the two rockers (6) are rotated in the opposite direction to separate and lift the two rubber sleeves (10) from the corresponding corrugated pads (34); S2: During the circuit board installation phase, the middle portion of the flexible circuit board body (16) to be tested is coiled in a Z-shaped manner on two smooth coiling rods (14), and then both ends of the flexible circuit board body (16) are respectively passed through the rubber sleeve (10) and the corrugated pad (34) on the same side, and finally connected to the circuit board monitor interface (33); after the connection is completed, the two rockers (6) are rotated forward to clamp and fix the two ends of the flexible circuit board body (16) through the rubber sleeve (10); S3: During the bending and tensile performance test phase, the reduction motor (36) is started, and the main rotary rod (27) is driven to perform periodic forward and reverse motions through the cooperation of the rotating wheel (17), the connecting rod (23), the propulsion rack (28), the reciprocating slider (30) and the buffer spring (29); within one bending test cycle, two synchronous bending operations are performed on the two symmetrical positions near the middle of the flexible circuit board body (16), and the tensile performance of the flexible circuit board body (16) is tested with the help of the elastic characteristics of the buffer spring (29); S4: Environmental tolerance test stage: while performing the bending test, the transmission screw (32) is rotated to push the piston plate in the liquid level regulating barrel (4) toward the bottom of the liquid level regulating barrel (4), pressing the test liquid into the liquid storage chamber so that the liquid contacts the flexible circuit board body (16) in the moving state, and the moisture resistance or corrosion resistance of the flexible circuit board body (16) during the repeated bending process is tested.

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