A test system for automobile light source circuit board

Abstract

The present invention discloses a test system for automobile light source circuit boards, and relates to the technical field of circuit board testing. In the present invention, a first detection mechanism is fixed on opposite sides of a test power supply mechanism, a second detection mechanism is slidably installed on opposite sides of the test power supply mechanism, a first return drive mechanism and a second return drive mechanism are respectively installed on opposite sides of the test power supply mechanism, a push frame is fixedly sleeved on the second detection pen, the first detection pen is slidably fitted inside the push frame, a return drive gear plate is arranged above the push frame, an energy storage baffle is arranged on the side of the first detection pen away from the second detection pen, and a breakpoint marking assembly is rotatably arranged on the second detection pen. In the present invention, when the detection indicator light goes out, the distance between the first detection pen and the second detection pen is controlled to be reduced until the detection indicator light turns on again, and after the breakpoint marking pen is driven to fit on the circuit board, the marking of the breakpoint on the printed circuit is achieved by the circumferential movement of the breakpoint marking pen.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit board testing, and in particular relates to a testing system for automobile light source circuit boards. Background Art

[0002] With the rapid development of the automotive industry and the improvement of its intelligence level, automotive light source circuit boards, as key components, have the advantages of small size, low power consumption and long service life. In the manufacturing process of automotive light sources, circuit boards are generally required to assemble automotive light sources by installing components on the circuit boards.

[0003] After the circuit board is produced, it needs to be tested to ensure the smoothness of the printed circuit and avoid the impact of internal circuit breakage. Most of the existing testing methods use various optical testing instruments to obtain the test results of the automotive light source circuit board.

[0004] Although the above circuit board detection method can realize the electrical performance test of the printed circuit inside the circuit board, it cannot mark the breakpoint position after completing the test of the printed circuit inside the circuit board, which makes it difficult for the staff to quickly and accurately find the breakpoint of the printed circuit during the subsequent repair process, thereby greatly reducing the work efficiency of circuit board repair. To this end, we provide a test system for automotive light source circuit boards to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a test system for automobile light source circuit boards, which solves the problems in the above-mentioned background technology through the specific structural design of the circuit test structure and the test control structure.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a test system for an automobile light source circuit board, comprising a circuit test structure; wherein the circuit test structure comprises a test power supply mechanism, the test power supply mechanism comprises a power supply module and a transmission gear, and a double-sided traction mechanism is fixedly installed on the inner side of the test power supply mechanism; a first detection mechanism, the first detection mechanism is fixedly installed on the opposite sides of the test power supply mechanism, and the two first detection mechanisms are arranged obliquely symmetrically, the first detection mechanism is connected to the power supply module through a wire, and the first detection mechanism comprises a first detection pen; a second detection mechanism, the second detection mechanism is slidably installed on the opposite sides of the test power supply mechanism, and the two second detection mechanisms are arranged obliquely symmetrically, the second detection mechanism is connected to the power supply module through a wire, the second detection mechanism comprises a second detection pen, and the double-sided traction mechanism is used to adjust the distance between the second detection mechanism and the corresponding first detection mechanism; and a first return drive mechanism and a second return drive mechanism, the first return drive mechanism and the second return drive mechanism are respectively installed on the opposite sides of the test power supply mechanism.

[0008] Among them, the first return drive mechanism and the second return drive mechanism both include a pushing frame, the pushing frame is fixedly mounted on the second detection pen, the first detection pen passes through the through cavity on the pushing frame and the two are slidably matched, and a return drive gear plate is arranged above the pushing frame; an energy storage baffle frame, the energy storage baffle frame is arranged on the side of the first detection pen away from the second detection pen, and the energy storage baffle frame is in contact with the pushing frame, and the energy storage baffle frame moves synchronously with the return drive gear plate; a transmission gear plate, the transmission gear plate is arranged on the inner side of the test power supply mechanism and moves synchronously with the energy storage baffle frame, the transmission gear plate on the first return drive mechanism is located above the transmission gear and the two are meshed, and the transmission gear plate on the second return drive mechanism is located below the transmission gear and the two are meshed; and a breakpoint marking assembly, the breakpoint marking assembly is rotatably arranged on the second detection pen, and the breakpoint marking assembly includes a breakpoint marking pen that can move axially along the second detection pen.

[0009] The test power supply mechanism also includes a detection indicator light and a detection voltmeter, both of which are electrically connected to the power supply module, the detection voltmeter is used to detect the voltage between the first detection pen and the second detection pen on the same side, and the detection indicator light is used to indicate the on / off status of the printed circuit between the first detection pen and the second detection pen on the same side; when it is monitored that the detection indicator light is off, the distance between the first detection pen and the second detection pen on the same side is reduced by the bilateral traction mechanism until the corresponding detection indicator light lights up again, and then the energy storage baffle frame is controlled to move to release the obstruction to the push frame, and the return drive gear plate that moves back synchronously with the energy storage baffle frame drives the corresponding breakpoint marking component to rotate, and the breakpoints on the printed circuit are marked by the circumferential movement of the breakpoint marking pen.

[0010] The present invention is further configured such that the test power supply mechanism also includes a test carrier frame, the detection indicator light and the detection voltmeter are both installed on the top of the test carrier frame, the power supply module is fixedly installed on the inner side of the test carrier frame, and the transmission gear is connected to the inside of the test carrier frame through a rotating shaft; a first slideway, a second slideway and a guide groove are provided on opposite sides of the test carrier frame, a limiting guide rail is fixedly arranged on one side of the test carrier frame close to the first return drive mechanism, a first mounting groove is provided on opposite sides of the test carrier frame, and a second mounting groove is provided on one side of the test carrier frame close to the second return drive mechanism.

[0011] The present invention is further configured such that the double-sided traction mechanism includes a motor seat fixedly mounted on the inner side of the test carrier frame, a first drive motor output shaft mounted on the top of the motor seat is connected to a first pulley, a double-sided traction shaft is rotatably arranged on the inner side of the test carrier frame, a first turntable rotatably fitted inside a first mounting groove is fixedly arranged at both ends of the double-sided traction shaft, and a second turntable rotatably arranged inside the second mounting groove.

[0012] The present invention is further configured such that a second pulley is fixedly provided on the peripheral side surface of the double-sided traction shaft, the first pulley and the second pulley are connected by a transmission belt, a winding control wheel coaxially therewith is fixedly installed on one side of the first turntable, a first guide wheel coaxially therewith is fixedly installed on one side of the second turntable, a first traction belt is wound around the winding control wheel close to the first return drive mechanism side, and a second traction belt is wound around the winding control wheel close to the second return drive mechanism side.

[0013] The present invention is further configured such that the first detection mechanism also includes a first mounting seat fixedly mounted on the test carrier frame, the first detection pen is fixedly mounted on the first mounting seat, the first mounting seat is connected to the power supply module via a wire, a first elastic member is provided on one side of the first mounting seat, and a second guide wheel is rotatably provided at the bottom of the first mounting seat.

[0014] The present invention is further configured such that the second detection mechanism also includes a second mounting seat slidably arranged in the guide groove, the second detection pen is fixedly mounted on the second mounting seat, the second mounting seat is connected to the power supply module through a wire, and the second mounting seat is connected to the first elastic member; the movable end of the first traction belt passes through the second guide wheel at the bottom of the corresponding first mounting seat and is fixed to the bottom of the second mounting seat, and the movable end of the second traction belt passes through the second guide wheel and the first guide wheel at the bottom of the corresponding first mounting seat in turn and is fixed to the bottom of the second mounting seat.

[0015] The present invention is further configured such that the second detection mechanism also includes a first movable frame that is slidably engaged with the inside of the second slide, a lifting screw is rotatably provided at the front end of the first movable frame, an inclined extrusion portion that is slidably engaged with the thread of the lifting screw is provided on the inner wall of the test carrier frame, a lifting control gear is fixedly provided on the lifting screw, a horizontal screw is connected to the output end of the second drive motor installed on the surface of the first movable frame, a second movable frame that is slidably engaged with the thread of the horizontal screw is provided on the inner wall of the test carrier frame, and a lifting control gear plate that meshes with the lifting control gear is fixedly provided on one end of the second movable frame.

[0016] The present invention is further configured as follows: the first return drive mechanism and the second return drive mechanism both include a support frame, the energy storage blocking frame slidably fitted inside the support frame, one end of the pushing frame is fixedly provided with an inclined force-bearing seat located on the inner side of the test load-bearing frame, the inclined surface at the bottom of the inclined extrusion portion is fitted on the inclined surface of the corresponding inclined force-bearing seat top, and the return drive gear plate is fixedly arranged on the support frame, one end of the support frame on the first return drive mechanism is fixedly provided with a first mounting frame slidably fitted with the corresponding first slide, the first mounting frame slidably fits on the limiting guide rail, the first mounting frame is fixedly connected to the corresponding transmission gear plate; a connecting plate fixed to the test load-bearing frame is provided on one side of the first mounting frame, and the connecting plate is connected to the first mounting frame by a second elastic member, and one end of the support frame on the second return drive mechanism is fixedly provided with a second mounting frame slidably fitted with the corresponding first slide, and the second mounting frame is fixedly connected to the corresponding transmission gear plate.

[0017] The present invention is further configured such that the breakpoint marking assembly also includes a mounting ring rotatably arranged on the second detection pen, a support rod is axially slidably arranged on the mounting ring, a mounting disk is fixedly arranged at one end of the support rod, the breakpoint marking pen is fixedly mounted on the mounting disk, a magnetic disk is fixedly arranged at the other end of the support rod, and there is magnetic repulsion between the electromagnet installed on the pushing frame and the permanent magnet on the magnetic disk; a breakpoint marking gear is fixedly installed between the support rods, and a third elastic member is arranged between the breakpoint marking gear and the mounting ring.

[0018] The present invention is further configured as follows: the present invention also includes a test control structure for installing a test power supply mechanism; wherein, the test control structure includes a support base, a hydraulic cylinder is fixedly installed on the support base, the output end of the hydraulic cylinder is connected to a U-shaped support platform, the test carrier is slidably arranged inside the U-shaped support platform, a test control shaft that is threadedly matched with the test carrier is rotatably arranged inside the U-shaped support platform, and one end of the test control shaft is connected to the output end of a test control motor installed on the outer wall of the U-shaped support platform.

[0019] The present invention has the following beneficial effects:

[0020] When the detection indicator light of the present invention goes out, it indicates that a breakpoint has occurred in the printed circuit of the circuit board between the first detection pen and the second detection pen. At this time, the control unit on the test carrier receives the signal and starts the first drive motor. Under the winding action of the winding control wheels at the ends of the traction shafts on both sides, the first traction belt and the second traction belt are respectively wound up, so that the distance between the first detection pen and the second detection pen is gradually reduced until the detection indicator light is on again. At this time, it is indicated that the position of the second detection pen is the breakpoint of the part of the printed circuit being detected. Subsequently, the breakpoint marking component is driven to move so that the breakpoint marking pen is attached to the circuit board, and then the energy storage baffle frame is controlled to move to release the obstruction of the push frame. The return drive gear plate that moves synchronously with the energy storage baffle frame drives the corresponding breakpoint marking component to rotate, and the marking of the breakpoint on the printed circuit is realized by the circumferential movement of the breakpoint marking pen. Through this detection method, the breakpoint of the printed circuit can be quickly and accurately found and the marking is completed, which is beneficial to improving the repair efficiency of the printed circuit by subsequent staff.

[0021] After completing the marking of a breakpoint of the printed circuit inside the circuit board on one side, the control unit of the present invention controls the first drive motor to run in reverse, and realizes the gradual release of the first traction belt and the second traction belt through the reverse rotating winding control wheel, until the two second detection pens on the opposite side return to the initial position, and continues to control the overall movement of the circuit test structure. When the two detection indicator lights on the test carrier are off, it means that breakpoints have appeared on the light source circuit boards on both sides of the circuit test structure being tested. According to the above-mentioned breakpoint positioning method and breakpoint marking method, the breakpoints of the detected part of the printed circuit can be quickly and accurately marked. Through this test method, the electrical performance tests of multiple light source circuit boards can be met at the same time, which greatly improves the work efficiency of the circuit board test. At the same time, the breakpoints of the printed circuit can be quickly and accurately marked, thereby greatly improving the efficiency of subsequent circuit board repair work.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 The schematic diagram is a structural diagram of a test system for automobile light source circuit boards.

[0025] Figure 2It is a structural schematic diagram of the line test structure in the present invention.

[0026] Figure 3 for Figure 2 The structural front view.

[0027] Figure 4 for Figure 2 Left view of the structure.

[0028] Figure 5 for Figure 2 Right view of the structure.

[0029] Figure 6 It is a partial structural diagram of the circuit test structure in the present invention.

[0030] Figure 7 It is a diagram of the coordination relationship between the test power supply mechanism and the test control structure in the present invention.

[0031] Figure 8 It is a schematic diagram of the structure of the test power supply mechanism in the present invention.

[0032] Fig. 9 for Figure 8 Schematic diagram of the structure from an upward perspective.

[0033] Fig.10 for Fig. 9 Side view of the structure.

[0034] Fig.11 It is a structural schematic diagram of the first detection mechanism in the present invention.

[0035] Fig.12 It is a structural schematic diagram of the second detection mechanism in the present invention.

[0036] Fig.13 It is a schematic structural diagram of the first return drive mechanism in the present invention.

[0037] Fig.14 It is a schematic structural diagram of the second return drive mechanism in the present invention.

[0038] Fig.15 It is a structural schematic diagram of the double-sided traction mechanism in the present invention.

[0039] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0040] 1-line test structure, 2-test power supply mechanism, 201-power supply module, 202-transmission gear, 203-test carrier, 204-first slide, 205-second slide, 206-guide groove, 207-limiting guide rail, 208-first mounting groove, 209-second mounting groove, 3-double-sided traction mechanism, 301-motor seat, 302-first drive motor, 303-first pulley, 304-double-sided traction shaft, 305-first Rotating plate, 306-second rotating plate, 307-second pulley, 308-transmission belt, 309-winding control wheel, 310-first guide wheel, 311-first traction belt, 312-second traction belt, 4-first detection mechanism, 401-first detection pen, 402-first mounting seat, 403-first elastic member, 404-second guide wheel, 5-second detection mechanism, 501-second detection pen, 502-second mounting seat, 503-first mobile frame, 5 04-lifting screw, 505-inclined extrusion part, 506-lifting control gear, 507-second drive motor, 508-horizontal screw, 509-second moving frame, 510-lifting control gear plate, 6-first back-moving drive mechanism, 601-pushing frame, 602-back-moving drive gear plate, 603-energy storage frame, 604-transmission gear plate, 605-support frame, 606-inclined force seat, 607-first mounting frame, 608-connecting plate, 609 -Second elastic part, 7-second return drive mechanism, 701-second mounting frame, 8-breakpoint marking assembly, 801-breakpoint marking pen, 802-mounting ring, 803-support rod, 804-mounting disk, 805-magnetic disk, 806-breakpoint marking gear, 807-third elastic part, 9-test and control structure, 901-support base, 902-hydraulic cylinder, 903-U-shaped support table, 904-test and control shaft, 905-test and control motor. DETAILED DESCRIPTION

[0041] 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.

[0042] For specific embodiment 1, please refer to Figure 1-15The present invention is a test system for an automobile light source circuit board, comprising a circuit test structure 1; wherein the circuit test structure 1 comprises a test power supply mechanism 2, a first detection mechanism 4, a second detection mechanism 5, a first back-moving driving mechanism 6, and a second back-moving driving mechanism 7; the test power supply mechanism 2 comprises a power supply module 201 and a transmission gear 202, and a double-sided traction mechanism 3 is fixedly installed inside the test power supply mechanism 2; the first detection mechanism 4 is fixedly installed on opposite sides of the test power supply mechanism 2, and the two first detection mechanisms 4 are arranged obliquely symmetrically, the first detection mechanism 4 is connected to the power supply module 201 through a wire, and the first detection mechanism 4 comprises a first detection pen 401;

[0043] The second detection mechanism 5 is slidably mounted on the opposite sides of the test power supply mechanism 2, and the two second detection mechanisms 5 are arranged obliquely symmetrically. The second detection mechanism 5 is connected to the power supply module 201 through a wire. The second detection mechanism 5 includes a second detection pen 501. The bilateral traction mechanism 3 is used to adjust the distance between the second detection mechanism 5 and the corresponding first detection mechanism 4; the first back-moving driving mechanism 6 and the second back-moving driving mechanism 7 are respectively mounted on the opposite sides of the test power supply mechanism 2;

[0044] The first back-moving driving mechanism 6 and the second back-moving driving mechanism 7 both include a push frame 601, an energy storage blocking frame 603, a transmission gear plate 604 and a breakpoint marking assembly 8; the push frame 601 is fixedly sleeved on the second detection pen 501, the first detection pen 401 passes through the through cavity on the push frame 601 and the two are slidably matched, and a back-moving driving gear plate 602 is arranged above the push frame 601; the energy storage blocking frame 603 is arranged on the side of the first detection pen 401 away from the second detection pen 501, and the energy storage blocking frame 603 is in contact with the push frame 601, and the energy storage blocking frame 603 is in contact with the push frame 601. The energy blocking frame 603 moves synchronously with the return drive gear plate 602; the transmission gear plate 604 is arranged on the inner side of the test power supply mechanism 2 and moves synchronously with the energy storage blocking frame 603, the transmission gear plate 604 on the first return drive mechanism 6 is located above the transmission gear 202 and the two are meshed, and the transmission gear plate 604 on the second return drive mechanism 7 is located below the transmission gear 202 and the two are meshed; the breakpoint marking component 8 is rotatably arranged on the second detection pen 501, and the breakpoint marking component 8 includes a breakpoint marking pen 801 that can move axially along the second detection pen 501;

[0045] The test power supply mechanism 2 also includes a detection indicator light and a detection voltmeter, both of which are electrically connected to the power supply module 201. The detection voltmeter is used to detect the voltage between the first detection pen 401 and the second detection pen 501 on the same side, and the detection indicator light is used to indicate the on / off status of the printed circuit between the first detection pen 401 and the second detection pen 501 on the same side; when it is monitored that the detection indicator light is off, the distance between the first detection pen 401 and the second detection pen 501 on the same side is reduced through the bilateral traction mechanism 3 until the corresponding detection indicator light lights up again, and then the energy storage baffle frame 603 is controlled to move to release the obstruction of the push frame 601, and the return drive gear plate 602 that moves back synchronously with the energy storage baffle frame 603 drives the corresponding breakpoint marking component 8 to rotate, and the breakpoints on the printed circuit are marked through the circumferential movement of the breakpoint marking pen 801.

[0046] In this embodiment of the present invention, the test power supply mechanism 2 also includes a test carrier 203, the detection indicator light and the detection voltmeter are installed on the top of the test carrier 203 (not shown in the figure), the power supply module 201 is fixedly installed on the inner side of the test carrier 203, and the transmission gear 202 is connected to the inside of the test carrier 203 through a rotating shaft; the first slideway 204, the second slideway 205 and the guide groove 206 are opened on opposite sides of the test carrier 203, and a limited position guide rail 207 is fixedly set on one side of the test carrier 203 close to the first return drive mechanism 6, and the first installation groove 208 is opened on the opposite sides of the test carrier 203, and the second installation groove 209 is opened on the side of the test carrier 203 close to the second return drive mechanism 7;

[0047] The first detection mechanism 4 also includes a first mounting seat 402 fixedly mounted on the test carrier 203, the first detection pen 401 is fixedly mounted on the first mounting seat 402, the first mounting seat 402 is connected to the power supply module 201 through a wire, a first elastic member 403 is provided on one side of the first mounting seat 402, and a second guide wheel 404 is rotatably provided at the bottom of the first mounting seat 402;

[0048] The second detection mechanism 5 also includes a second mounting seat 502 slidably arranged in the guide groove 206, and the second detection pen 501 is fixedly mounted on the second mounting seat 502. The second mounting seat 502 is connected to the power supply module 201 through a wire. In this embodiment, the power supply module 201, the detection indicator light, the first mounting seat 402, the first detection pen 401, the circuit board printed circuit between the two detection pens, the second detection pen 501 and the second mounting seat 502 constitute a series circuit, and the detection voltmeter is arranged in parallel between the circuit board printed circuit between the two detection pens, which is used to detect the voltage of the circuit board printed circuit between the two detection pens. The second mounting seat 502 is connected to the first elastic member 403. By arranging the first elastic member 403 between the first mounting seat 402 and the second mounting seat 502, it is convenient to adjust the horizontal spacing between the first mounting seat 402 and the second mounting seat 502 to meet the position of the specific breakpoint of the printed circuit.

[0049] In this embodiment of the present invention, the bilateral traction mechanism 3 includes a motor seat 301 fixedly mounted on the inner side of the test carrier 203, and the output shaft of a first drive motor 302 (reduction motor) mounted on the top of the motor seat 301 is connected to a first pulley 303, and the first drive motor 302 is powered by a power supply module 201, and a bilateral traction shaft 304 is rotatably arranged on the inner side of the test carrier 203, and both ends of the bilateral traction shaft 304 are fixedly provided with a first rotating disk 305 rotatably matched in the first mounting groove 208, and a second rotating disk 306 is rotatably arranged in the second mounting groove 209;

[0050] The second pulley 307 is fixedly provided on the side surface of the double-sided traction shaft 304, the first pulley 303 and the second pulley 307 are connected by a transmission belt 308, and a winding control wheel 309 coaxial with the first turntable 305 is fixedly installed on one side of the first turntable 305. With such a structural design, the first pulley 303 can be driven to rotate by the operation of the first drive motor 302, and the synchronous rotation of the double-sided traction shaft 304 can be achieved under the cooperation of the transmission belt 308 and the second pulley 307, thereby realizing the synchronous rotation of the winding control wheels 309 at both ends of the double-sided traction shaft 304, and the second turntable 30 6 is fixedly installed with a first guide wheel 310 coaxial with it, and a first traction belt 311 is wound around the winding control wheel 309 close to the first return drive mechanism 6. The first traction belt 311 is used to control the horizontal movement of the second detection pen 501 at the corresponding position, and a second traction belt 312 is wound around the winding control wheel 309 close to the second return drive mechanism 7. The second traction belt 312 is used to control the horizontal movement of the second detection pen 501 at the corresponding position, that is, the two second detection pens 501 on the opposite sides of the test carrier 203 move toward each other synchronously.

[0051] In this embodiment of the present invention, the movable end of the first traction belt 311 passes through the second guide wheel 404 at the bottom of the corresponding first mounting seat 402 and is fixed to the bottom of the second mounting seat 502. Through this structural design, when the double-sided traction shafts 304 are controlled to rotate, the first traction belt 311 can be gradually wound on the corresponding winding control wheel 309, and then the tension of the first traction belt 311 can reduce the distance between the first detection pen 401 and the second detection pen 501 at the corresponding position. In this process, the stability of the movement of the second detection pen 501 can be ensured by the first elastic member 403. The movable end of the second traction belt 312 passes through the second guide wheel 404 and the first guide wheel 310 at the bottom of the corresponding first mounting seat 402 in sequence and is fixed to the bottom of the second mounting seat 502. Through this structural design, when the rotation of the double-sided traction shaft 304 is controlled, the second traction belt 312 can be gradually wound on the corresponding winding control wheel 309, and then the tension of the second traction belt 312 is used to reduce the distance between the first detection pen 401 and the second detection pen 501 at the corresponding position. In this process, the stability of the movement of the second detection pen 501 can be guaranteed by the first elastic member 403.

[0052] When the control circuit test structure 1 moves until the first detection pen 401 and the second detection pen 501 are both attached to the circuit board (at this time, the printed circuit inside the circuit board is connected to the first detection pen 401 and the second detection pen 501), the power supply module 201 is turned on at this time. When the detection indicator light is always in a bright state, it means that the part of the printed circuit between the first detection pen 401 and the second detection pen 501 is complete. Then continue to move the light source circuit board so that the next part of the printed circuit on it is between the first detection pen 401 and the second detection pen 501. If the detection indicator light is still in a bright state at this time, it means that the part of the printed circuit is also complete. In this way, the electrical performance test of the printed circuit inside the light source circuit board can be realized;

[0053] When the detection indicator light goes out, it indicates that a breakpoint occurs in the printed circuit of the circuit board between the first detection pen 401 and the second detection pen 501. At this time, the control unit on the test carrier 203 receives the signal and starts the first drive motor 302. Under the winding action of the winding control wheels 309 at the ends of the double-sided traction shafts 304, the first traction belt 311 and the second traction belt 312 are respectively wound up, so that the distance between the first detection pen 401 and the second detection pen 501 is gradually reduced until the detection indicator light turns on again. At this time, it indicates that the position of the second detection pen 501 is the breakpoint of the printed circuit being tested. Subsequently, the breakpoint marking component 8 is driven to move so that the breakpoint marking pen 801 is attached to the circuit board, and then the energy storage blocking frame 603 is controlled to move to remove the obstruction of the push frame 601. The return drive gear plate 602 that moves back synchronously with the energy storage blocking frame 603 drives the corresponding breakpoint marking component 8 to rotate, and the breakpoint on the printed circuit is marked by the circumferential movement of the breakpoint marking pen 801.

[0054] After completing the marking of a breakpoint of the printed circuit inside the circuit board on one side, the control unit controls the first drive motor 302 to run in reverse, and the first traction belt 311 and the second traction belt 312 are gradually released by the reverse rotating winding control wheel 309 until the two second detection pens 501 on the opposite side return to the initial position, and continue to control the overall movement of the circuit test structure 1. When the two detection indicator lights on the test carrier 203 are off, it means that breakpoints have appeared on the light source circuit boards on both sides of the circuit test structure 1 being tested. According to the above-mentioned breakpoint positioning method and breakpoint marking method, the breakpoints of the detected part of the printed circuit can be quickly and accurately marked. This test method can simultaneously meet the electrical performance tests of multiple light source circuit boards, greatly improving the work efficiency of the circuit board test. At the same time, the breakpoints of the printed circuit can be quickly and accurately marked, thereby greatly improving the efficiency of subsequent circuit board repair work.

[0055] Specific embodiment 2, on the basis of specific embodiment 1, the second detection mechanism 5 also includes a first movable frame 503 that is slidably fitted inside the second slide 205, a lifting screw 504 is rotatably provided at the front end of the first movable frame 503, an inclined extrusion portion 505 that is threadably fitted with the lifting screw 504 is slidably fitted on the inner wall of the test carrier frame 203, a lifting control gear 506 is fixedly provided on the lifting screw 504, and an output end of a second drive motor 507 mounted on the surface of the first movable frame 503 is connected to a horizontal screw 508, the second drive motor 507 is powered by the power supply module 201, and only when a breakpoint is detected on one side of the printed circuit, it is necessary to control the second drive motor 507 on this side to operate, and the test A second movable frame 509 threadably matched with the horizontal screw 508 is slidably provided on the inner wall of the support frame 203, and a lifting control gear plate 510 meshing with the lifting control gear 506 is fixedly provided at one end of the second movable frame 509. After the second drive motor 507 is started, the horizontal screw 508 is controlled to rotate. Since the second movable frame 509 is slidably fitted on the inner wall of the test support frame 203, the second movable frame 509 is driven to move horizontally under the action of the horizontal screw 508, and the lifting control gear plate 510 that moves synchronously with the second movable frame 509 drives the lifting control gear 506 to rotate, and then the inclined surface extrusion portion 505 is lifted and lowered by the cooperation of the lifting screw 504 and the inclined surface extrusion portion 505.

[0056] In this embodiment of the present invention, the first return drive mechanism 6 and the second return drive mechanism 7 both further include a support frame 605, and a return spring (not shown in the figure) is arranged between the movable end of the energy storage baffle frame 603 and the support frame 605, and the energy storage baffle frame 603 is slidably fitted inside the support frame 605. Through this structure, while ensuring that the energy storage baffle frame 603 moves synchronously with the support frame 605, the energy storage baffle frame 603 can slide along the support frame 605, and one end of the push frame 601 is fixedly provided with an inclined force seat 606 located on the inner side of the test carrier frame 203. When the detection indicator light goes out, the distance between the first detection pen 401 and the second detection pen 501 is controlled to gradually decrease until the detection indicator light turns on again. At this time, the inclined surface squeezing portion 505 is controlled to move downward to squeeze the corresponding inclined surface force seat 606, and the inclined surface force seat 606 subjected to the squeezing force moves toward the inner side of the test carrier frame 203 and presses The return spring is retracted until the inclined surface force bearing seat 606 moves to fit on the side wall of the inclined surface extrusion part 505 (the inclined surface force bearing seat 606 will not move back under the blocking effect of the inclined surface extrusion part 505). At this time, the front end of the pushing frame 601 is aligned with the notch on the energy storage blocking frame 603, and then the energy storage blocking frame 603 can pass through the pushing frame 601 and move back. In this process, the breakpoint marking component 8 is driven to rotate by the back-moving driving gear plate 602. The inclined surface at the bottom of the inclined surface extrusion part 505 is fitted on the inclined surface of the top of the corresponding inclined surface force bearing seat 606. The back-moving driving gear plate 602 is fixedly arranged on the support frame 605. One end of the support frame 605 on the first back-moving driving mechanism 6 is fixedly provided with a first mounting frame 607 that slidably cooperates with the corresponding first slideway 204. The first mounting frame 607 slidably cooperates with the limiting guide rail 207, and the first mounting frame 607 is fixedly connected to the corresponding transmission gear plate 604.

[0057] A connecting plate 608 fixed on the test carrier frame 203 is provided on one side of the first mounting frame 607, and the connecting plate 608 is connected to the first mounting frame 607 by a second elastic member 609. When the detection indicator light is off, the distance between the first detection pen 401 and the second detection pen 501 is controlled to gradually narrow, and the pushing frame 601 that moves synchronously with the second detection pen 501 pushes the corresponding energy storage blocking frame 603 forward. In this process, the second elastic member 609 is gradually compressed, and the transmission gear 202 is driven to rotate under the action of the transmission tooth plate 604 on the first return drive mechanism 6, thereby realizing the synchronous movement of the transmission tooth plate 604 on the second return drive mechanism 7, thereby making the support frame 605 on the second return drive mechanism 7 move toward each other with the support frame 605 on the first return drive mechanism 6, and one end of the support frame 605 on the second return drive mechanism 7 is fixedly provided with a second mounting frame 701 that slidably cooperates with the corresponding first slide 204, and the second mounting frame 701 is fixedly connected to the corresponding transmission tooth plate 604.

[0058] In this embodiment of the present invention, the breakpoint marking assembly 8 also includes a mounting ring 802 rotatably arranged on the second detection pen 501, a support rod 803 is axially slidably arranged on the mounting ring 802, a mounting disk 804 is fixedly arranged at one end of the support rod 803, the breakpoint marking pen 801 is fixedly installed on the mounting disk 804, and a magnetic disk 805 is fixedly arranged at the other end of the support rod 803, and the electromagnet installed on the push frame 601 and the permanent magnet on the magnetic disk 805 repel each other magnetically; a breakpoint marking gear 806 is fixedly installed between the support rods 803, and a third elastic member 807 is arranged between the breakpoint marking gear 806 and the mounting ring 802; when the detection indicator light is off, the first detection pen 401 and the second detection pen 501 are controlled to move relative to each other. The distance between them gradually decreases until the detection indicator light turns on again, and then the control unit controls the electromagnet on the pushing frame 601 to be energized and magnetized, and the magnetic disk 805 moves and compresses the third elastic member 807 under the action of the magnetic repulsion force until the breakpoint marking pen 801 is attached to the corresponding circuit board. At this time, the breakpoint marking gear 806 moves to align with the return drive rotating gear plate 602, and after controlling the energy storage blocking frame 603 to move and release the obstruction to the pushing frame 601 (that is, the front end of the pushing frame 601 is aligned with the notch on the energy storage blocking frame 603), the return drive rotating gear plate 602 that moves back with the support frame 605 drives the corresponding breakpoint marking gear 806 to rotate, and then the circle marking of the breakpoint position is completed through the rotation of the breakpoint marking pen 801.

[0059] After completing the breakpoint marking of the printed circuit inside the circuit board, the control unit controls the first drive motor 302 to rotate in the reverse direction, and the first traction belt 311 and the second traction belt 312 are gradually released by the reverse rotating winding control wheel 309 until the two second detection pens 501 on the opposite sides return to the initial position (at this time the second elastic member 609 restores its original length), and the pushing frame 601 that moves synchronously with the second detection pen 501 also returns to the initial position. At this time, the front end of the pushing frame 601 is again aligned with the notch on the energy storage baffle frame 603, and then the second drive motor 507 controls the horizontal screw 508 to rotate in the reverse direction. Under the action of the horizontal screw 508, the second moving frame 509 is driven to move in the reverse direction, and the lifting control gear plate 510 that moves synchronously with the second moving frame 509 drives the lifting control gear 506 to move in the reverse direction. The lifting screw 504 and the inclined plane extrusion part 505 are cooperated to drive the inclined plane extrusion part 505 to move upward and reset. At this time, the inclined plane force-bearing seat 606 is moved in the opposite direction and reset under the elastic restoring force of the reset spring (that is, the top inclined plane of the inclined plane force-bearing seat 606 is again fitted on the bottom inclined plane of the corresponding inclined plane extrusion part 505), and the front end of the pushing frame 601 is again fitted with the energy storage blocking frame 603 (the energy storage blocking frame 603 again blocks the front end of the pushing frame 601). Finally, the electromagnet on the pushing frame 601 is controlled to be powered off and demagnetized, and the breakpoint marking gear 806 is moved in the opposite direction and reset under the elastic restoring force of the third elastic member 807. That is, the breakpoint marking gear 806 and the corresponding return drive gear plate 602 are horizontally misaligned at this time, thereby completing the resetting of each structure after the breakpoint marking.

[0060] In this embodiment of the present invention, the present invention also includes a test control structure 9 for installing the test power supply mechanism 2; wherein the test control structure 9 includes a support base 901, on which a hydraulic cylinder 902 is fixedly installed, and the up and down position adjustment of the test carrier 203 can be controlled by the setting of the hydraulic cylinder 902, thereby realizing the up and down position adjustment of the line test structure 1, and the output end of the hydraulic cylinder 902 is connected to a U-shaped support platform 903, and the test carrier 203 is slidably arranged inside the U-shaped support platform 903, and the U-shaped support platform 903 rotates inside. A test control shaft 904 is provided which is threadedly matched with the test carrier 203. One end of the test control shaft 904 is connected to the output end of a test control motor 905 installed on the outer wall of the U-shaped support platform 903. The horizontal position of the entire circuit test structure 1 can be adjusted by driving the test control motor 905 to rotate the test control shaft 904. Under the joint action of the test control motor 905 and the hydraulic cylinder 902, the movement of the entire circuit test structure 1 on the surface of the circuit board can be adjusted to realize the electrical performance test of some printed circuits at different positions on the circuit board.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A test system for automobile light source circuit board, characterized in that: The invention comprises a line test structure (1); wherein the line test structure (1) comprises: A test power supply mechanism (2), the test power supply mechanism (2) comprising a power supply module (201) and a transmission gear (202), a double-sided traction mechanism (3) being fixedly mounted inside the test power supply mechanism (2); A first detection mechanism (4), the first detection mechanism (4) being fixedly mounted on two opposite sides of the test power supply mechanism (2), and the two first detection mechanisms (4) being arranged obliquely symmetrically, the first detection mechanism (4) being connected to the power supply module (201) via a wire, and the first detection mechanism (4) comprising a first detection pen (401); a second detection mechanism (5), the second detection mechanism (5) being slidably mounted on opposite sides of the test power supply mechanism (2), and the two second detection mechanisms (5) being arranged obliquely symmetrically, the second detection mechanism (5) being connected to the power supply module (201) via a wire, the second detection mechanism (5) comprising a second detection pen (501), and the double-sided traction mechanism (3) being used to adjust the distance between the second detection mechanism (5) and the corresponding first detection mechanism (4); and a first back-moving driving mechanism (6) and a second back-moving driving mechanism (7), wherein the first back-moving driving mechanism (6) and the second back-moving driving mechanism (7) are respectively mounted on opposite sides of the test power supply mechanism (2); Wherein, the first back-moving driving mechanism (6) and the second back-moving driving mechanism (7) both comprise: A pushing frame (601), the pushing frame (601) being fixedly sleeved on the second detection pen (501), the first detection pen (401) passing through a through cavity on the pushing frame (601) and the two are slidably matched, and a return drive gear plate (602) is arranged above the pushing frame (601); An energy storage baffle (603), the energy storage baffle (603) being arranged on a side of the first detection pen (401) away from the second detection pen (501), the energy storage baffle (603) being in close contact with the pushing frame (601), and the energy storage baffle (603) moving synchronously with the return drive gear plate (602); a transmission tooth plate (604), the transmission tooth plate (604) being arranged inside the test power supply mechanism (2) and moving synchronously with the energy storage baffle (603), the transmission tooth plate (604) on the first return drive mechanism (6) being located above the transmission gear (202) and the two being meshed with each other, and the transmission tooth plate (604) on the second return drive mechanism (7) being located below the transmission gear (202) and the two being meshed with each other; and a breakpoint marking component (8), the breakpoint marking component (8) being rotatably disposed on the second detection pen (501), the breakpoint marking component (8) comprising a breakpoint marking pen (801) movable along the axial direction of the second detection pen (501); The test power supply mechanism (2) further comprises a detection indicator light and a detection voltmeter, both of which are electrically connected to the power supply module (201), the detection voltmeter being used to detect the voltage between the first detection pen (401) and the second detection pen (501) on the same side, and the detection indicator light being used to indicate whether the printed circuit between the first detection pen (401) and the second detection pen (501) on the same side is on or off; When it is detected that the detection indicator light is off, the distance between the first detection pen (401) and the second detection pen (501) on the same side is reduced by the double-sided traction mechanism (3) until the corresponding detection indicator light is on again, and then the energy storage blocking frame (603) is controlled to move to release the blocking of the push frame (601), and the return drive gear plate (602) that moves back synchronously with the energy storage blocking frame (603) drives the corresponding breakpoint marking component (8) to rotate, and the breakpoint on the printed circuit is marked by the circumferential movement of the breakpoint marking pen (801).

2. A test system for automobile light source circuit board according to claim 1, characterized in that: The test power supply mechanism (2) further comprises a test carrier (203), the detection indicator light and the detection voltmeter are both mounted on the top of the test carrier (203), the power supply module (201) is fixedly mounted on the inner side of the test carrier (203), and the transmission gear (202) is connected to the inside of the test carrier (203) via a rotating shaft; The first slideway (204), the second slideway (205) and the guide groove (206) are provided on opposite sides of the test carrier (203); a limit guide rail (207) is fixedly provided on one side of the test carrier (203) close to the first return drive mechanism (6); the first installation groove (208) is provided on opposite sides of the test carrier (203); and the second installation groove (209) is provided on one side of the test carrier (203) close to the second return drive mechanism (7).

3. A test system for automobile light source circuit board according to claim 2, characterized in that: The double-sided traction mechanism (3) comprises a motor seat (301) fixedly mounted inside the test carrier (203); an output shaft of a first drive motor (302) mounted on the top of the motor seat (301) is connected to a first pulley (303); a double-sided traction shaft (304) is rotatably arranged inside the test carrier (203); a first rotating disk (305) rotatably fitted inside a first mounting groove (208) is fixedly arranged at both ends of the double-sided traction shaft (304); and a second rotating disk (306) is rotatably arranged inside the second mounting groove (209).

4. A test system for automobile light source circuit board according to claim 3, characterized in that: A second pulley (307) is fixedly provided on the peripheral side of the double-sided traction shaft (304); the first pulley (303) and the second pulley (307) are connected via a transmission belt (308); a winding control wheel (309) coaxial with the first turntable (305) is fixedly installed on one side; a first guide wheel (310) coaxial with the second turntable (306) is fixedly installed on one side; a first traction belt (311) is wound around the winding control wheel (309) close to the first return drive mechanism (6); and a second traction belt (312) is wound around the winding control wheel (309) close to the second return drive mechanism (7).

5. A test system for automobile light source circuit board according to claim 4, characterized in that: The first detection mechanism (4) further comprises a first mounting seat (402) fixedly mounted on the test carrier (203); the first detection pen (401) is fixedly mounted on the first mounting seat (402); the first mounting seat (402) is connected to the power supply module (201) via a wire; a first elastic member (403) is provided on one side of the first mounting seat (402); and a second guide wheel (404) is rotatably provided at the bottom of the first mounting seat (402).

6. A test system for automobile light source circuit board according to claim 5, characterized in that: The second detection mechanism (5) further comprises a second mounting seat (502) slidably arranged in the guide groove (206); the second detection pen (501) is fixedly mounted on the second mounting seat (502); the second mounting seat (502) is connected to the power supply module (201) via a wire; and the second mounting seat (502) is connected to the first elastic member (403); The movable end of the first traction belt (311) passes through the second guide wheel (404) at the bottom of the corresponding first mounting seat (402) and is fixed to the bottom of the second mounting seat (502); the movable end of the second traction belt (312) passes through the second guide wheel (404) and the first guide wheel (310) at the bottom of the corresponding first mounting seat (402) in sequence and is fixed to the bottom of the second mounting seat (502).

7. A test system for automobile light source circuit board according to claim 6, characterized in that: The second detection mechanism (5) further comprises a first movable frame (503) slidably engaged inside the second slideway (205); a lifting screw (504) is rotatably arranged at the front end of the first movable frame (503); an inclined surface extrusion portion (505) threadably engaged with the lifting screw (504) is slidably engaged on the inner wall of the test support frame (203); a lifting control gear (506) is fixedly arranged on the lifting screw (504); an output end of a second driving motor (507) mounted on the surface of the first movable frame (503) is connected to a horizontal screw (508); a second movable frame (509) threadably engaged with the horizontal screw (508) is slidably arranged on the inner wall of the test support frame (203); and a lifting control gear plate (510) meshing with the lifting control gear (506) is fixedly arranged on one end of the second movable frame (509).

8. A test system for automobile light source circuit board according to claim 7, characterized in that: The first back-moving driving mechanism (6) and the second back-moving driving mechanism (7) both further include a support frame (605), the energy storage blocking frame (603) is slidably fitted inside the support frame (605), one end of the pushing frame (601) is fixedly provided with an inclined surface force-bearing seat (606) located on the inner side of the test bearing frame (203), the inclined surface at the bottom of the inclined surface extrusion portion (505) is fitted on the inclined surface of the top of the corresponding inclined surface force-bearing seat (606), the back-moving driving gear plate (602) is fixedly provided on the support frame (605), one end of the support frame (605) on the first back-moving driving mechanism (6) is fixedly provided with a first mounting frame (607) slidably fitted with the corresponding first slideway (204), the first mounting frame (607) is slidably fitted on the limiting guide rail (207), and the first mounting frame (607) is fixedly connected to the corresponding transmission gear plate (604); A connecting plate (608) fixed on the test support frame (203) is provided on one side of the first mounting frame (607); the connecting plate (608) and the first mounting frame (607) are connected via a second elastic member (609); a second mounting frame (701) slidably matched with the corresponding first slideway (204) is fixedly provided on one end of the support frame (605) on the second return drive mechanism (7); the second mounting frame (701) is fixedly connected to the corresponding transmission tooth plate (604).

9. A test system for automobile light source circuit board according to claim 8, characterized in that: The breakpoint marking assembly (8) further comprises a mounting ring (802) rotatably mounted on the second detection pen (501); a support rod (803) is axially slidably mounted on the mounting ring (802); a mounting disk (804) is fixedly mounted on one end of the support rod (803); the breakpoint marking pen (801) is fixedly mounted on the mounting disk (804); a magnetic disk (805) is fixedly mounted on the other end of the support rod (803); an electromagnet mounted on the pushing frame (601) and a permanent magnet on the magnetic disk (805) magnetically repel each other; a breakpoint marking gear (806) is fixedly mounted between the support rods (803); and a third elastic member (807) is arranged between the breakpoint marking gear (806) and the mounting ring (802).

10. A test system for automobile light source circuit board according to claim 9, characterized in that: It also includes a test control structure (9) for installing a test power supply mechanism (2); wherein the test control structure (9) includes a support base (901), a hydraulic cylinder (902) is fixedly installed on the support base (901), the output end of the hydraulic cylinder (902) is connected to a U-shaped support platform (903), the test bearing frame (203) is slidably arranged inside the U-shaped support platform (903), a test control shaft (904) threadedly matched with the test bearing frame (203) is rotatably arranged inside the U-shaped support platform (903), and one end of the test control shaft (904) is connected to the output end of a test control motor (905) installed on the outer wall of the U-shaped support platform (903).

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