Circuit board production line test equipment

Abstract

The invention relates to the field of circuit boards, and discloses a circuit board production line testing device, including a detection box with a box door installed, a first fixed plate is arranged in the detection box, two first sliding columns are connected to the first fixed plate, the first sliding column is connected to the first sliding plate and the second sliding plate, the first sliding plate and the second sliding plate are connected through a vibration mechanism, a third sliding column is connected to the bottom of the second sliding plate, the second fixed plate is slidably connected to the third sliding column, and a counterweight is connected to the third sliding column. The power generated by the gas delivered by an air pump can make the second sliding plate vibrate continuously in the process of moving up and down, and drive the flexible circuit board to vibrate, so as to effectively test whether there are cold solder joints on the flexible circuit board, and in the process of the second sliding plate constantly moving up and down, the two hollow extension plates will be moved away from or close to each other, so as to effectively change the vibration amplitude and vibration frequency of the flexible circuit board.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit boards, and more particularly to a circuit board production line testing device. Background Art

[0002] Circuit board is an important basic component used to support and connect various electronic components in electronic equipment. Its main function is to provide physical support and electrical connection for electronic components. Its main categories include single-sided circuit board, double-sided circuit board, multi-layer circuit board and flexible circuit board.

[0003] Flexible circuit boards need to be tested during the production process to ensure that they can be used normally before they are put on the market for sale. The testing of circuit boards requires not only inspection of their appearance, but also inspection of the various electrical components on them. For the inspection of electrical components, most of them will first check the solder joints when the electrical components are installed. In many cases, poor quality of solder joints will cause the electrical components to be unable to be electrically connected to the substrate, thus rendering the circuit board unusable.

[0004] Then, the existing circuit board manufacturing technology is mature, and the defective rate of the manufactured circuit boards is low. If the method of checking each solder joint on the circuit board one by one is adopted, it is not very fast. The best way to check is to power on the circuit board for use. If the circuit board can be used normally, there is no problem with the circuit board. Otherwise, there is a problem with the circuit board. However, the existing power-on inspection circuit boards are always placed stably on the test equipment, and will not be affected by environmental factors such as vibration. At this time, when there are some cold solder joints on the circuit board, they will not be detected. In the actual use process of the circuit board, it will face the influence of vibration, high temperature and other environments, which will cause the cold solder joints on the circuit board to fall off, thereby affecting the use of the circuit board. Therefore, we designed a circuit board production line testing device. Summary of the invention

[0005] The present invention provides a circuit board production line testing device to solve the technical problem that the existing power-on inspection circuit boards in the related art are always placed stably on the testing equipment without being affected by environmental factors such as vibration. At this time, when there are some cold solder joints on the circuit board, they will not be detected. However, during the actual use of the circuit board, it will face the influence of vibration, high temperature and other environments, which will cause the cold solder joints on the circuit board to fall off, thereby affecting the use of the circuit board.

[0006] The present invention provides a circuit board production line testing device, comprising a detection box with a box door installed, a first fixed plate fixedly installed on the inner wall of the top of the inner cavity of the detection box, two first sliding columns fixedly connected to the first fixed plate, a first sliding plate and a second sliding plate slidably connected to the first sliding column, the first sliding plate and the second sliding plate are connected via a vibration mechanism, a third sliding column fixedly connected to the bottom of the second sliding plate, a second fixed plate slidably connected to the third sliding column, the second fixed plate is fixedly connected to the detection box, the second fixed plate is fixedly connected to the first sliding column, and a counterweight is fixedly connected to the bottom of the third sliding column;

[0007] A placing mechanism, fixedly mounted on the second sliding plate, the placing mechanism being used for placing a circuit board;

[0008] A driving mechanism, fixedly mounted on the detection box, and used for driving the first sliding plate and the second sliding plate to move up and down;

[0009] The switching mechanism is fixedly mounted on the driving mechanism, and the switching mechanism is used for heating and humidifying the circuit board.

[0010] As a further optimization scheme of the present invention, the vibration mechanism includes a limiting tube, a plurality of the limiting tubes are sleeved on the first sliding column, and the plurality of limiting tubes are respectively fixedly connected to the first sliding plate and the second sliding plate, the first sliding column is sleeved with a first spring, and the two ends of the first spring are respectively fixedly connected to the first sliding plate and the second sliding plate; two second sliding columns are fixedly connected to the bottom of the first sliding plate, the second sliding column passes through the second sliding plate and is slidably connected to the second sliding plate, the bottom of the second sliding column is fixedly connected with a first limiting plate, the second sliding column is sleeved with a second spring, and the two ends of the second spring are respectively connected to the second sliding column and the first limiting plate.

[0011] As a further optimization scheme of the present invention, the placement mechanism includes an extension box, which is fixedly connected to the second sliding plate; a connecting shaft is arranged inside the extension box, and a third positioning seat is rotatably connected to the connecting shaft, and the third positioning seat is fixedly connected to the extension box, and reciprocating screws are fixedly connected at both ends of the connecting shaft, and the threads of the two reciprocating screws are opposite, and thread blocks are threadedly connected to the two reciprocating screws, and a hollow extension plate is fixedly connected to the thread block, and the hollow extension plate is slidably connected to the extension box.

[0012] As a further optimization scheme of the present invention, the placement mechanism also includes a second positioning seat, the second positioning seat is rotatably connected to a driving frame, the driving frame is fixedly connected to a fifth gear, the fifth gear is provided with a tooth groove, a paddle plate is arranged inside the tooth groove, the paddle plate is fixedly connected to a sixth rotating shaft, the sixth rotating shaft is rotatably connected to the first positioning seat, the first positioning seat is fixedly connected to the extension box, the sixth rotating shaft is fixedly connected to a fourth gear, the fourth gear is meshed with a third gear, and the third gear is fixedly connected to the connecting shaft; the fifth gear is meshed with a rack, the rack passes through the extension box and is slidably connected to the extension box, the top of the rack is fixedly connected to a second limit plate, and the second limit plate is connected to the extension box through a third spring.

[0013] As a further optimization scheme of the present invention, the placement mechanism also includes a connecting plate, which is fixedly connected to the hollow extension plate, a second connecting block is fixedly connected to the bottom of the connecting plate, an auxiliary roller is rotatably connected between the two second connecting blocks, a groove is opened inside the second connecting block, a telescopic rod is fixedly connected inside the groove, a first connecting block is fixedly connected to the telescopic rod, a fourth spring is sleeved on the telescopic rod, two ends of the fourth spring are respectively connected to the first connecting block and the second connecting block, and an auxiliary roller is rotatably installed between the two first connecting blocks.

[0014] As a further optimization scheme of the present invention, the driving mechanism includes a fixed block, which is fixedly connected to the detection box, a first hollow box is fixedly connected to the fixed block, a second hollow box is arranged inside the first hollow box, a plurality of bent pipes are fixedly connected to the second hollow box, a third rotating shaft is fixedly connected to the second hollow box, a first rotating plate is fixedly connected to the third rotating shaft, a second rotating shaft is rotatably installed on the first rotating plate, a second rotating plate is rotatably installed on the second rotating shaft, a rotating seat is rotatably installed on the second rotating plate, and the rotating seat is fixedly connected to the first sliding plate.

[0015] As a further optimization scheme of the present invention, the driving mechanism also includes an air pump, which is fixedly installed on the top of the detection box, and an air supply pipe is fixedly connected to the air pump, and the air supply pipe extends to the interior of the first hollow box and is rotatably connected to the rotating tube, and the first hollow box is fixedly connected to the first driving box and the detection box; a first gear is fixedly connected to the rotating tube, a second gear is meshed with the first gear, a first rotating shaft is fixedly connected to the second gear, the first rotating shaft passes through the detection box and is rotatably connected to the detection box, and a first bevel gear is fixedly connected to the first rotating shaft.

[0016] As a further optimization scheme of the present invention, the switching mechanism includes an electric heating tube, a gas pipe is fixedly connected to the top of the electric heating tube, and the gas pipe is fixedly connected to the first hollow box; a rotating disk is rotatably connected inside the electric heating tube, and a plurality of mounting grooves are provided on the rotating disk, and a first insulation tube and a second insulation tube are respectively threadedly installed inside the plurality of mounting grooves, a nozzle is fixedly installed at the bottom of the first insulation tube and the second insulation tube, a one-way valve is installed on the nozzle, and a storage tube is fixedly installed inside the second insulation tube.

[0017] As a further optimization scheme of the present invention, the switching mechanism also includes a fifth rotating shaft and a fourth rotating shaft. The fifth rotating shaft passes through the electric heating tube and is rotatably connected to the electric heating tube. The fifth rotating shaft is fixedly connected to the rotating disk. The second driving disk is fixedly connected to the fifth rotating shaft, and the second driving disk is provided with a first auxiliary groove and a second auxiliary groove; the first driving disk is fixedly connected to the fourth rotating shaft, and the first driving disk is fixedly connected to an auxiliary disk, the auxiliary disk matches the first auxiliary groove, the first driving disk is fixedly connected to a driving column, the driving column matches the second auxiliary groove, and the second bevel gear is fixedly connected to the fifth rotating shaft, and the second bevel gear is meshed with the first bevel gear.

[0018] As a further optimization scheme of the present invention, the switching mechanism also includes a hose, and the two hoses are respectively fixedly installed on both sides of the electric heating tube; a first hard tube is fixedly connected to the hose, and the first hard tube is fixedly connected to the extension box, a second hard tube is slidably connected inside the first hard tube, and a nozzle is fixedly connected to the second hard tube.

[0019] The beneficial effects of the present invention are:

[0020] 1. The circuit board production line testing device described in the present invention can cause the first sliding plate and the second sliding plate to continuously move up and down through the power generated by the gas delivered by the air pump. Due to the action of the first spring, the second spring and the counterweight block, the second sliding plate can continuously vibrate during the up and down movement, so that the flexible circuit board placed between the two auxiliary rollers can be vibrated, thereby effectively testing whether there are cold solder joints on the flexible circuit board. In addition, during the continuous up and down movement of the second sliding plate, the two hollow extension plates will be moved away from or close to each other, so that the limiting position of the flexible circuit board will change, thereby effectively changing the vibration amplitude and vibration frequency of the flexible circuit board.

[0021] 2. In the circuit board production line testing device described in the present invention, the gas delivered by the air pump will be heated inside the electric heating tube and then discharged. The discharged gas can also be discharged to a designated position with the help of the first hard tube and the second hard tube. In this way, the solder joints on the circuit board are heated with the help of the high-temperature gas, and then combined with the vibration test of the circuit board, the cold solder joint condition of the solder joints on the circuit board can be further tested.

[0022] 3. In the circuit board production line testing device described in the present invention, the gas delivered by the air pump will be heated inside the electric heating tube and then discharged. Due to the driving force generated by the gas, the two groups of first insulation tubes and second insulation tubes will be continuously switched. Since a storage tube is provided inside the first insulation tube, hot water can be stored in the storage tube, and the hot water will generate hot steam. The hot steam will be discharged from the nozzle along with the gas and act on the circuit board. In this way, the use environment of the circuit board can be changed with the help of heat and humidity, and combined with the circuit board vibration test, it is further tested whether the solder joints on the circuit board will have cold solder joints under different environmental conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the detection box of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the placement mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the connection between the reciprocating screw rod and the rack of the present invention;

[0027] Figure 5 is a schematic diagram of the connection between the first connection block and the second connection block of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the driving mechanism of the present invention;

[0029] Figure 7 yes Figure 6 A magnified schematic diagram of part A;

[0030] Figure 8 yes Figure 6 A magnified schematic diagram of part B;

[0031] Fig. 9 is a schematic diagram of the connection between the first drive disk and the second drive disk of the present invention;

[0032] Fig.10 It is a schematic diagram of the internal structure of the electric heating tube of the present invention;

[0033] Fig.11 It is a schematic diagram of the internal structure of the first thermal insulation pipe of the present invention;

[0034] Fig.12 It is a schematic diagram of the internal structure of the second thermal insulation pipe of the present invention;

[0035] Fig.13 It is a structural schematic diagram of the nozzle of the present invention.

[0036] In the figure: 1, detection box; 2, box door; 301, air supply pipe; 302, air pump; 303, elbow; 304, fixed block; 305, first hollow box; 306, rotating tube; 307, first bevel gear; 308, first rotating shaft; 309, first gear; 310, rotating seat; 311, second hollow box; 312, first rotating plate; 313, second rotating plate; 314, second rotating shaft; 315, second gear; 316, third Rotating shaft; 401, first fixed plate; 402, first sliding plate; 403, first sliding column; 404, limiting tube; 405, first spring; 406, second sliding column; 407, second sliding plate; 408, second spring; 409, first limiting plate; 410, second fixed plate; 411, counterweight; 412, third sliding column; 501, extension box; 502, third spring; 503, second limiting plate; 504, rack; 50 5. Hollow extension plate; 506. Connecting plate; 507. Auxiliary roller; 508. First connecting block; 509. Second connecting block; 510. Reciprocating screw rod; 511. Third gear; 512. Connecting shaft; 513. Sixth rotating shaft; 514. Fourth gear; 515. First positioning seat; 516. Paddle plate; 517. Fifth gear; 518. Driving frame; 519. Second positioning seat; 520. Telescopic rod; 521. Fourth spring; 601 , electric heating tube; 602, hose; 603, first hard tube; 604, nozzle; 605, second hard tube; 606, drive column; 607, fourth rotating shaft; 608, gas pipe; 609, first drive disk; 610, second drive disk; 611, auxiliary disk; 612, fifth rotating shaft; 613, rotating disk; 614, first insulation tube; 615, nozzle; 616, second insulation tube; 617, storage tube; 618, second bevel gear. DETAILED DESCRIPTION

[0037] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0038] like Figures 1 to 7As shown, the circuit board production line testing device described in the embodiment of the present invention includes a detection box 1 equipped with a box door 2, a first fixed plate 401 is fixedly installed on the inner wall of the top of the inner cavity of the detection box 1, two first sliding columns 403 are fixedly connected to the first fixed plate 401, a first sliding plate 402 and a second sliding plate 407 are slidably connected to the first sliding column 403, the first sliding plate 402 and the second sliding plate 407 are connected by a vibration mechanism, a third sliding column 412 is fixedly connected to the bottom of the second sliding plate 407, a second fixed plate 410 is slidably connected to the third sliding column 412, and the second fixed plate 410 is fixedly connected to the detection box 1, the second fixed plate 410 is fixedly connected to the first sliding column 403, and the third sliding column 412 is fixedly connected to a counterweight block 411 at the bottom; a placement mechanism is fixedly installed on the second sliding plate 407, and the placement mechanism is used to place the circuit board; a driving mechanism is fixedly installed on the detection box 1, and the driving mechanism is used to drive the first sliding plate 402 and the second sliding plate 407 to move up and down; a switching mechanism is fixedly installed on the driving mechanism, and the switching mechanism is used to heat and humidify the circuit board; the vibration mechanism includes a limiting tube 404, and a plurality of limiting tubes 404 are sleeved on the first sliding column 403, A plurality of limiting tubes 404 are respectively fixedly connected to the first sliding plate 402 and the second sliding plate 407, a first spring 405 is sleeved on the first sliding column 403, and the two ends of the first spring 405 are respectively fixedly connected to the first sliding plate 402 and the second sliding plate 407; two second sliding columns 406 are fixedly connected to the bottom of the first sliding plate 402, the second sliding column 406 passes through the second sliding plate 407 and is slidably connected to the second sliding plate 407, a first limiting plate 409 is fixedly connected to the bottom of the second sliding column 406, a second spring 408 is sleeved on the second sliding column 406, and the two ends of the second spring 408 are respectively fixedly connected to the first sliding plate 402 and the second sliding plate 407; The second sliding column 406 and the first limiting plate 409 are connected; the placement mechanism includes an extension box 501, and the extension box 501 is fixedly connected to the second sliding plate 407; a connecting shaft 512 is arranged inside the extension box 501, and a third positioning seat is rotatably connected to the connecting shaft 512, and the third positioning seat is fixedly connected to the extension box 501, and both ends of the connecting shaft 512 are fixedly connected to reciprocating screw rods 510, and the threads of the two reciprocating screw rods 510 are opposite, and the two reciprocating screw rods 510 are threadedly connected to the thread blocks, and the thread blocks are fixedly connected to the hollow extension plate 505, and the hollow extension plate 505 is slidably connected to the extension box 501;The driving mechanism includes a fixed block 304, the fixed block 304 is fixedly connected to the detection box 1, a first hollow box 305 is fixedly connected to the fixed block 304, a second hollow box 311 is arranged inside the first hollow box 305, a plurality of bent pipes 303 are fixedly connected to the second hollow box 311, a third rotating shaft 316 is fixedly connected to the second hollow box 311, a first rotating plate 312 is fixedly connected to the third rotating shaft 316, a second rotating shaft 314 is rotatably mounted on the first rotating plate 312, a second rotating shaft 314 is rotatably mounted on the second rotating plate 313, a rotating seat 310 is rotatably mounted on the second rotating plate 313, and the rotating seat 310 and the first sliding plate 4 are connected to each other. 02 is fixedly connected; the driving mechanism also includes an air pump 302, which is fixedly installed on the top of the detection box 1, and the air pump 302 is fixedly connected with an air supply pipe 301, which extends to the inside of the first hollow box 305 and is rotatably connected to the rotating tube 306, and the first hollow box 305 is fixedly connected to the first driving box and the detection box 1; the rotating tube 306 is fixedly connected with a first gear 309, and the first gear 309 is meshed with a second gear 315, and the second gear 315 is fixedly connected with a first rotating shaft 308, the first rotating shaft 308 penetrates the detection box 1 and is rotatably connected to the detection box 1, and the first rotating shaft 308 is fixedly connected with a first bevel gear 307. ;

[0039] It should be noted that the placement mechanism also includes a connecting plate 506, which is fixedly connected to the hollow extension plate 505, a second connecting block 509 is fixedly connected to the bottom of the connecting plate 506, an auxiliary roller 507 is rotatably connected between the two second connecting blocks 509, a groove is provided inside the second connecting block 509, a telescopic rod 520 is fixedly connected inside the groove, a first connecting block 508 is fixedly connected to the telescopic rod 520, a fourth spring 521 is sleeved on the telescopic rod 520, two ends of the fourth spring 521 are respectively connected to the first connecting block 508 and the second connecting block 509, and an auxiliary roller 507 is rotatably installed between the two first connecting blocks 508; the first connecting block 508 is pulled to make the auxiliary roller 507 on the first connecting block 508 away from the auxiliary roller 507 on the second connecting block 509, and then the flexible circuit board to be tested is placed between the two auxiliary rollers 507, and with the help of the fourth spring 521, the two auxiliary rollers 507 can clamp the flexible circuit board, and finally, the clamped flexible circuit board is powered on and waits for testing;

[0040] Start the air pump 302, the air pump 302 will extract the outside air and transport it to the air supply pipe 301, the gas entering the air supply pipe 301 will enter the second hollow box 311, and then be discharged from the bent pipe 303. Due to the effect of the bent pipe 303, the gas will generate a thrust when being discharged, so that the second hollow box 311 will rotate continuously, the rotation of the second hollow box 311 will drive the third rotating shaft 316 to rotate, the rotation of the third rotating shaft 316 will drive the first rotating plate 312 to rotate, the first rotating plate 312 will drive the second rotating plate 313 to rotate, and since the second rotating plate 313 is fixedly connected to the first sliding plate 402, the first sliding plate 402 will be pulled to move up and down continuously;

[0041] When the first sliding plate 402 is continuously moved up and down, the second sliding column 406 and the second spring 408 will cause the second sliding plate 407 to continuously move up and down. The second sliding plate continuously moves up and down, and will also drive the counterweight block 411 to continuously hit the detection box 1. Finally, due to the action of the first spring 405 and the second spring 408, the second sliding plate 407 will continuously vibrate during the process of moving up and down, so that the flexible circuit board can detect whether there is a cold solder joint in the electrical components welded thereon during the power-on operation.

[0042] Please refer to Figure 3 , Figure 4 The placement mechanism also includes a second positioning seat 519, on which a driving frame 518 is rotatably connected, and a fifth gear 517 is fixedly connected to the driving frame 518. A tooth groove is provided on the fifth gear 517, and a toggle piece 516 is arranged inside the tooth groove. A sixth rotating shaft 513 is fixedly connected to the toggle piece 516, and a first positioning seat 515 is rotatably connected to the sixth rotating shaft 513. The first positioning seat 515 is fixedly connected to the extension box 501, and a fourth gear 514 is fixedly connected to the sixth rotating shaft 513. The fourth gear 514 is meshed with a third gear 511, and the third gear 511 is fixedly connected to the connecting shaft 512; a rack 504 is meshed on the fifth gear 517, and the rack 504 penetrates the extension box 501 and is slidably connected to the extension box 501. A second limiting plate 503 is fixedly connected to the top of the rack 504, and the second limiting plate 503 is connected to the extension box 501 through a third spring 502;

[0043] When the flexible circuit board is continuously vibrating, the second sliding plate 407 is continuously moving up and down. The up and down movement of the second sliding plate 407 drives the extension box 501 to move up and down. The up and down movement of the extension box 501 causes the second limit plate 503 on the extension box 501 to collide with the electric heating tube 601. Since the position of the electric heating tube 601 is fixed, the second limit plate 503 drives the rack 504 to move downward due to the extrusion. The downward movement of the rack 504 drives the fifth gear 517 to rotate. The fifth gear 517 drives the third gear 517 to rotate through the toggle piece 516. The shaft 316 rotates, the third rotating shaft 316 drives the fourth gear 514 to rotate, the fourth gear 514 drives the third gear 511 to rotate, the third gear 511 drives the connecting shaft 512 to rotate, the connecting shaft 512 drives the two reciprocating screws 510 with opposite threads to rotate, so that the two reciprocating screws 510 will drive the two thread blocks to move, the two thread blocks drive the two hollow extension plates 505 to move, and the two hollow extension plates 505 drive the two sets of auxiliary rollers 507 to move, so that the two sets of auxiliary rollers 507 can be effectively moved closer to or away from each other;

[0044] When the two sets of auxiliary rollers 507 are close to each other, the auxiliary rollers 507 can only clamp the middle of the flexible circuit board to ensure that the flexible circuit board is in a horizontal state at the clamping position, while the remaining parts will bend due to their own gravity. In this way, during the above-mentioned vibration detection process, the remaining parts of the flexible circuit board will be more bent, and the vibration amplitude will be large and the vibration frequency will be small. As the two sets of auxiliary rollers 507 continue to move away from each other, more and more parts of the flexible circuit board are in a horizontal state, while fewer and fewer parts can be bent. In this way, during vibration detection, the vibration amplitude will become smaller, but the vibration frequency will become larger, thereby effectively changing the vibration amplitude and vibration frequency to detect whether there are cold solder joints on the flexible circuit board.

[0045] like Figure 6 to Figure 7 , Figures 10 to 13 As shown, the switching mechanism includes an electric heating tube 601, and an air supply pipe 608 is fixedly connected to the top of the electric heating tube 601, and the air supply pipe 608 is fixedly connected to the first hollow box 305; a rotating disk 613 is rotatably connected inside the electric heating tube 601, and a plurality of mounting grooves are provided on the rotating disk 613, and a first insulation tube 614 and a second insulation tube 616 are respectively threadedly installed inside the plurality of mounting grooves, and a nozzle 615 is fixedly installed at the bottom of the first insulation tube 614 and the second insulation tube 616, and a one-way valve is installed on the nozzle 615; the switching mechanism also includes a hose 602, and the two hoses 602 are respectively fixedly installed on both sides of the electric heating tube 601; a first hard tube 603 is fixedly connected to the hose 602, and the first hard tube 603 is fixedly connected to the extension box 501, and a second hard tube 605 is slidably connected inside the first hard tube 603, and a nozzle 604 is fixedly connected to the second hard tube 605.

[0046] It should be noted that the gas ejected from the elbow 303 will enter the first hollow box 305, and then be transported to the first insulation pipe 614 through the gas delivery pipe 608. Since the first insulation pipe 614 is located inside the electric heating tube 601, the input gas will be heated to form hot gas discharge. The discharged gas will be transported to the nozzle 604 through the hose 602, the first hard pipe 603, and the second hard pipe 605 for discharge.

[0047] Since the first hard tube 603 and the second hard tube 605 are slidably connected, but the friction between the first hard tube 603 and the second hard tube 605 is large, it is not easy to change after the sliding adjustment position. In this way, the position of the second hard tube 605 can be adjusted so that the nozzle 604 connected to it is aligned with some welding points on the flexible circuit board, so that the flexible circuit board can effectively heat some welding points during the above-mentioned vibration test, thereby improving the firmness of the welding points and detecting whether there is a cold solder joint.

[0048] like Figures 6 to 10 , Fig.12 As shown, a storage tube 617 is fixedly installed inside the second insulation tube 616; the switching mechanism also includes a fifth rotating shaft 612 and a fourth rotating shaft 607, the fifth rotating shaft 612 passes through the electric heating tube 601 and is rotatably connected to the electric heating tube 601, the fifth rotating shaft 612 is fixedly connected to the rotating disk 613, the fifth rotating shaft 612 is fixedly connected to the second driving disk 610, and the second driving disk 610 is provided with a first auxiliary groove and a second auxiliary groove; the first driving disk 609 is fixedly connected to the fourth rotating shaft 607, the first driving disk 609 is fixedly connected to the auxiliary disk 611, the auxiliary disk 611 matches the first auxiliary groove, the first driving disk 609 is fixedly connected to the driving column 606, the driving column 606 matches the second auxiliary groove, the fifth rotating shaft 612 is fixedly connected to the second bevel gear 618, and the second bevel gear 618 is meshed with the first bevel gear 307.

[0049] It should be noted that when the second hollow box 311 rotates, the second hollow box 311 will drive the rotating tube 306 to rotate, the rotating tube 306 will drive the first gear 309 to rotate, the first gear 309 will drive the second gear 315 to rotate, the second gear 315 will drive the first rotating shaft 308 to rotate, the first rotating shaft 308 will drive the fourth rotating shaft 607 through the first bevel gear 307 and the second bevel gear 618, the fourth rotating shaft 607 will drive the first driving disk 609 to rotate, the first driving disk 609 will drive the driving column 606 to rotate, the driving column 606 will act on the second driving disk 610, so that the second driving disk 610 is intermittently rotated. One quarter rotation, when the second driving disk 610 rotates one quarter, the rotating disk 613 will also rotate one quarter, so that the positions of the first insulation tube 614 and the second insulation tube 616 will change, so that the second insulation tube 616 will be connected to the gas pipe 608. Since a storage tube 617 is arranged inside the second insulation tube 616, hot water is stored inside the storage tube 617, and the hot water will produce water vapor, so that the hot gas will become humid, and the humidified gas will act on the solder joints on the flexible circuit board, which can further change the detection environment on the basis of the above-mentioned vibration test, so as to better detect the firmness of the solder joints and detect whether there is a cold solder joint.

[0050] The above describes an embodiment of the present invention, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make many forms, all of which are protected by this embodiment.

Claims

1. A circuit board production line testing device, comprising a testing box (1) equipped with a box door (2), characterized in that: A first fixed plate (401) is fixedly mounted on the inner wall of the inner cavity top of the detection box (1); two first sliding columns (403) are fixedly connected to the first fixed plate (401); a first sliding plate (402) and a second sliding plate (407) are slidably connected to the first sliding column (403); the first sliding plate (402) and the second sliding plate (407) are connected via a vibration mechanism; a third sliding column (412) is fixedly connected to the bottom of the second sliding plate (407); a second fixed plate (410) is slidably connected to the third sliding column (412); the second fixed plate (410) is fixedly connected to the detection box (1); the second fixed plate (410) is fixedly connected to the first sliding column (403); and a counterweight (411) is fixedly connected to the bottom of the third sliding column (412); a placement mechanism, fixedly mounted on the second sliding plate (407), the placement mechanism being used to place a flexible circuit board; The placement mechanism comprises an extension box (501), wherein the extension box (501) is fixedly connected to the second sliding plate (407); A connecting shaft (512) is provided inside the extension box (501), a third positioning seat is rotatably connected to the connecting shaft (512), the third positioning seat is fixedly connected to the extension box (501), both ends of the connecting shaft (512) are fixedly connected to reciprocating screws (510), the two reciprocating screws (510) have opposite threads, the two reciprocating screws (510) are threadedly connected to thread blocks, a hollow extension plate (505) is fixedly connected to the thread blocks, and the hollow extension plate (505) is slidably connected to the extension box (501); The placement mechanism further comprises a connecting plate (506), wherein the connecting plate (506) is fixedly connected to the hollow extension plate (505), a second connecting block (509) is fixedly connected to the bottom of the connecting plate (506), an auxiliary roller (507) is rotatably connected between the two second connecting blocks (509), a groove is provided inside the second connecting block (509), a telescopic rod (520) is fixedly connected inside the groove, a first connecting block (508) is fixedly connected to the telescopic rod (520), a fourth spring (521) is sleeved on the telescopic rod (520), two ends of the fourth spring (521) are respectively connected to the first connecting block (508) and the second connecting block (509), an auxiliary roller (507) is rotatably installed between the two first connecting blocks (508), and the flexible circuit board to be tested is placed between the two auxiliary rollers (507); A driving mechanism, fixedly mounted on the detection box (1), the driving mechanism being used to drive the first sliding plate (402) and the second sliding plate (407) to move up and down; The switching mechanism is fixedly mounted on the driving mechanism, and the switching mechanism is used to heat and humidify the flexible circuit board.

2. The circuit board production line testing device according to claim 1, characterized in that: The vibration mechanism comprises a limiting tube (404), a plurality of the limiting tubes (404) are sleeved on the first sliding column (403), the plurality of the limiting tubes (404) are respectively fixedly connected to the first sliding plate (402) and the second sliding plate (407), a first spring (405) is sleeved on the first sliding column (403), and two ends of the first spring (405) are respectively fixedly connected to the first sliding plate (402) and the second sliding plate (407); Two second sliding columns (406) are fixedly connected to the bottom of the first sliding plate (402); the second sliding columns (406) penetrate the second sliding plate (407) and are slidably connected to the second sliding plate (407); the bottom of the second sliding column (406) is fixedly connected to a first limiting plate (409); a second spring (408) is sleeved on the second sliding column (406); two ends of the second spring (408) are respectively connected to the second sliding column (406) and the first limiting plate (409).

3. The circuit board production line testing device according to claim 2, characterized in that: The placement mechanism further comprises a second positioning seat (519), the second positioning seat (519) is rotatably connected to a driving frame (518), the driving frame (518) is fixedly connected to a fifth gear (517), the fifth gear (517) is provided with a tooth groove, a shifting piece (516) is arranged inside the tooth groove, the shifting piece (516) is fixedly connected to a sixth rotating shaft (513), the sixth rotating shaft (513) is rotatably connected to a first positioning seat (515), the first positioning seat (515) is fixedly connected to the extension box (501), the sixth rotating shaft (513) is fixedly connected to a fourth gear (514), the fourth gear (514) is meshed with a third gear (511), and the third gear (511) is fixedly connected to a connecting shaft (512); The fifth gear (517) is meshed with a rack (504), the rack (504) passes through the extension box (501) and is slidably connected to the extension box (501), the top of the rack (504) is fixedly connected to a second limit plate (503), and the second limit plate (503) is connected to the extension box (501) via a third spring (502).

4. The circuit board production line testing device according to claim 3, characterized in that: The driving mechanism comprises a fixed block (304), and the fixed block (304) is fixedly connected to the detection box (1); The fixed block (304) is fixedly connected to a first hollow box (305), a second hollow box (311) is arranged inside the first hollow box (305), a plurality of bent pipes (303) are fixedly connected to the second hollow box (311), a third rotating shaft (316) is fixedly connected to the second hollow box (311), a first rotating plate (312) is fixedly connected to the third rotating shaft (316), a second rotating shaft (314) is rotatably mounted on the first rotating plate (312), a second rotating plate (313) is rotatably mounted on the second rotating shaft (314), a rotating seat (310) is rotatably mounted on the second rotating plate (313), and the rotating seat (310) is fixedly connected to the first sliding plate (402).

5. The circuit board production line testing device according to claim 4, characterized in that: The driving mechanism further comprises an air pump (302), the air pump (302) being fixedly mounted on the top of the detection box (1), the air pump (302) being fixedly connected to an air supply pipe (301), the air supply pipe (301) extending into the interior of the first hollow box (305) and being rotatably connected to a rotating tube (306), the first hollow box (305) being fixedly connected to the first driving box and the detection box (1); The rotating tube (306) is fixedly connected to a first gear (309), the first gear (309) is meshed with a second gear (315), the second gear (315) is fixedly connected to a first rotating shaft (308), the first rotating shaft (308) passes through the detection box (1) and is rotationally connected to the detection box (1), and the first rotating shaft (308) is fixedly connected to a first bevel gear (307).

6. The circuit board production line testing device according to claim 5, characterized in that: The switching mechanism comprises an electric heating cartridge (601), a gas supply pipe (608) being fixedly connected to the top of the electric heating cartridge (601), and the gas supply pipe (608) being fixedly connected to the first hollow box (305); The electric heating tube (601) is rotatably connected to a rotating disk (613) inside, and a plurality of mounting grooves are provided on the rotating disk (613). A first thermal insulation tube (614) and a second thermal insulation tube (616) are respectively threadedly installed inside the plurality of mounting grooves. A nozzle (615) is fixedly installed at the bottom of each of the first thermal insulation tube (614) and the second thermal insulation tube (616). A one-way valve is installed on the nozzle (615). A storage tube (617) is fixedly installed inside the second thermal insulation tube (616).

7. The circuit board production line testing device according to claim 6, characterized in that: The switching mechanism further comprises a fifth rotating shaft (612) and a fourth rotating shaft (607); the fifth rotating shaft (612) penetrates the electric heating tube (601) and is rotationally connected to the electric heating tube (601); the fifth rotating shaft (612) is fixedly connected to the rotating disk (613); a second driving disk (610) is fixedly connected to the fifth rotating shaft (612); and a first auxiliary groove and a second auxiliary groove are formed on the second driving disk (610); The fourth rotating shaft (607) is fixedly connected to a first driving disk (609), the first driving disk (609) is fixedly connected to an auxiliary disk (611), the auxiliary disk (611) matches the first auxiliary groove, the first driving disk (609) is fixedly connected to a driving column (606), the driving column (606) matches the second auxiliary groove, and the fifth rotating shaft (612) is fixedly connected to a second bevel gear (618), the second bevel gear (618) meshes with the first bevel gear (307).

8. The circuit board production line testing device according to claim 7, characterized in that: The switching mechanism further comprises a hose (602), and the two hoses (602) are respectively fixedly mounted on both sides of the electric heating cylinder (601); The hose (602) is fixedly connected to a first hard tube (603), the first hard tube (603) is fixedly connected to the extension box (501), a second hard tube (605) is slidably connected inside the first hard tube (603), and a nozzle (604) is fixedly connected to the second hard tube (605).

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