An ICT and FCT combined detection device

Abstract

The present invention relates to the field of automotive circuit board detection, and particularly relates to an ICT and FCT combined detection device, which includes a bottom plate. Symmetrically distributed support plates are arranged on the bottom plate. A rotating shaft is rotatably arranged between the support plates. Swing plates are symmetrically sleeved outside the rotating shaft. Swing shafts are rotatably arranged at opposite ends of the swing plates. A guard plate is arranged between the swing shafts. A plurality of transmission shafts evenly distributed along its extension section are rotatably arranged between the guard plates. And L-shaped plates are arranged on the opposite sides of the support plates. An ICT test unit for performing ICT tests on the circuit board is arranged on the L-shaped plates. Through the cooperation between the transmission shafts and indirectly driving the transmission shafts to swing by the rotating shaft, the circuit board on one side of the transmission mechanism can be driven to the lower ends of the ICT test unit and the FCT test unit to perform ICT tests and FCT tests on the circuit board respectively. If the circuit board cannot complete the ICT test, that is, it does not need to perform the FCT test, saving the test time and improving the applicability of the present invention.

Description

Technical Field

[0001] The present invention relates to the field of automotive circuit board detection, and particularly to an ICT and FCT combined detection device. Background Art

[0002] The application of ICT and FCT combined detection devices in automotive electronics mainly involves the comprehensive detection of automotive electronic control boards (PCBA); this combined detection device combines two testing methods, ICT and FCT, to ensure the quality and function of automotive electronic control boards.

[0003] ICT testing mainly targets circuit boards. By touching the pins of each component on the PCBA board and measuring whether its value is consistent with the nominal value, it is a very important means to detect the values and polarities of components such as resistors, capacitors, and inductors; ICT testing can check component failures and welding failures, usually in the next process after PCBA welding. Problematic boards (such as components soldered in reverse, short circuits, etc.) can be directly repaired on the welding line; FCT testing is an electronic and electrical functional test, that is, after completing the ICT testing steps, the product is turned on, and the parameters of the product during normal operation are tested.

[0004] However, existing automotive main board detection devices usually can only perform single-point touch testing on circuit boards, that is, by contacting components with a single touch rod, with low efficiency. Even if multiple components can be synchronously contacted and detected, after replacing the circuit board with other specifications, a new touch detection device needs to be synchronously replaced, and its original touch detection device cannot be applied to other specifications of main boards, with low applicability.

[0005] For example, Chinese Patent No. CN105486996A discloses a circuit board assembly detection system.

[0006] It includes a transmission device, and in sequence along the transmission direction of the transmission device, there are a coding device, an ICT testing device, a digital tube inserting device, an FCT testing device, a CCD scanning device, and an oil spraying device. The coding machine can automatically code the circuit board, the ICT testing device can automatically perform ICT testing on the circuit board, the digital tube inserting device can automatically insert digital tubes on the circuit board, which speeds up the speed and efficiency of inserting digital tubes, and the FCT testing device can automatically perform FCT testing on the circuit board to be tested.

[0007] However, there are still some deficiencies in the above detection system during actual use:

[0008] 1. Although the above detection system can perform ICT tests on circuit boards, the test contacts of its ICT test equipment cannot be customized. That is, it can only test specific circuit boards and cannot be applied to other circuit boards of different specifications. Therefore, the applicability of the above test system is relatively low.

[0009] 2. Although the above test system can perform tests on circuit boards in multiple systems, it cannot classify the tested circuit boards as qualified. That is, it is still necessary to manually or use external equipment to distinguish the circuit boards that pass the test and those that fail the test based on whether the test results of the circuit boards meet the standards, and then separate and transport them to the corresponding areas, which further reduces its applicability.

[0010] Therefore, under the viewpoints stated above, there is still room for improvement in the existing ICT and FCT test devices. Summary of the Invention

[0011] To solve the above problems, the present invention provides an ICT and FCT combined detection device, including a bottom plate. Symmetrically distributed support plates are arranged on the bottom plate. A rotating shaft is rotatably arranged between the support plates. Swing plates are symmetrically sleeved outside the rotating shaft. Swing shafts are rotatably arranged at opposite ends of the swing plates. A guard plate is arranged between the swing shafts. Several transmission shafts evenly distributed along its extension section are rotatably arranged between the guard plates. And L-shaped plates are arranged on the opposite sides of the support plates. An ICT test unit for performing ICT tests on circuit boards is arranged on the L-shaped plates.

[0012] The ICT test unit includes a sliding groove opened on the L-shaped plate. Reciprocating lead screws are rotatably arranged on the inner walls of both sides of the sliding groove. A sliding plate threadedly connected to the corresponding reciprocating lead screw is slidably arranged in one of the sliding grooves.

[0013] Preferably, the ICT test unit further includes a rectangular frame arranged at the other end of the sliding plate. An ICT tester is arranged on the rectangular frame. Several mounting grooves arranged in a rectangular distribution are opened at the lower end of the ICT tester. Electric contact pieces are arranged on the inner walls of the mounting grooves. Circular grooves are also opened on the inner walls of the mounting grooves. Mounting posts are slidably arranged in the mounting grooves. Rubber rings located in the circular grooves are arranged on the outer sides of the mounting posts. A push rod is arranged at the lower end of the mounting post. A probe is arranged at the telescopic end of the push rod.

[0014] Preferably, the rubber ring is made of an elastic material.

[0015] Preferably, the height of the other sliding groove is higher than that of one of the sliding grooves. And an FCT test unit for performing FCT tests on circuit boards is arranged in the other sliding groove. The FCT test unit includes a lifting plate slidably arranged in the sliding groove and threadedly connected to the corresponding reciprocating lead screw. An FCT tester is arranged on the lifting plate. Docking probes are symmetrically arranged at the lower end of the lifting plate.

[0016] Preferably, a horizontal component for making the guard plate and the bottom plate vertically distributed is provided on one swing plate. The horizontal component includes a structural groove opened on one swing plate, and one end corresponding to the swing shaft is inserted into the structural groove. Two reversing shafts are symmetrically and rotatably arranged on the inner wall of the structural groove. Reversing gears are sleeved on the outer sides of the reversing shafts, and the two reversing gears mesh with each other.

[0017] Preferably, one reversing shaft and the corresponding swing shaft are connected by a belt drive. A fixed gear ring is also provided on one support plate, and the fixed gear ring is located in the structural groove and meshes with the corresponding reversing gear. Two transmission mechanisms are also symmetrically arranged on the bottom plate, and the transmission mechanisms are respectively distributed on both sides of the support plate.

[0018] Preferably, a fixing unit for fixing the circuit board is provided between the guard plates. The fixing unit includes two circular hole grooves symmetrically opened on the guard plates. A round rod is slidably arranged in the circular hole groove. A strip plate is jointly arranged between the two corresponding round rods on the two guard plates, and a conductive plate is arranged at the lower end of the strip plate. A linkage plate is jointly arranged between the round rods on the same guard plate.

[0019] Preferably, a receiving groove is opened on the inner wall of the circular hole groove. A spring rod is arranged in the receiving groove. Two semi-circular grooves symmetrically distributed up and down are also opened on the inner wall of the receiving groove. A circular ball is rotatably arranged at the telescopic end of the spring rod, and the circular ball is located in one of the semi-circular grooves.

[0020] Preferably, a driving unit for driving the round rod to move up and down is provided on one transmission mechanism. The driving unit includes L-shaped plates symmetrically arranged on both sides of one transmission mechanism. A resisting rod is sleeved on the outer sides of the two round rods close to the L-shaped plates, and the resisting rod corresponds to the lower end surface of the L-shaped plate.

[0021] Preferably, a supporting strip plate is also provided on the bottom plate. An electric push rod is arranged at the upper end of the supporting strip plate. A triangular inclined block is arranged at the telescopic end of the electric push rod, and the inclined surface of the triangular inclined block corresponds to the lower end surface of the resisting rod.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] First, through the cooperation between the transmission shafts and indirectly driving the transmission shafts to swing by the rotating shafts, the circuit board on one transmission mechanism can be driven to the lower ends of the ICT test unit and the FCT test unit, and the circuit board is respectively subjected to ICT test and FCT test. If the circuit board cannot complete the ICT test, that is, there is no need to perform the FCT test, which saves the test time and improves the applicability of the present invention.

[0024] Second, after the test of the present invention, the driving unit can also drive the fixing unit to cancel the fixation of the circuit board, and move the circuit board to different transmission mechanisms according to whether the test result of the circuit board meets the standard, saving the trouble of manual selection and improving the test efficiency.

[0025] Third, when the rotating shaft and the reciprocating lead screw of the present invention rotate, only one driving end of the driving unit is needed to synchronously rotate both of them, saving the use of driving equipment, further saving costs, and facilitating subsequent maintenance. The present invention can also drive the guard plate and the transmission shaft to always be horizontal with the bottom through the horizontal component, preventing the circuit board from falling due to the skew of the guard plate when the circuit board is not clamped and fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the drawings and embodiments.

[0027] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the swing plate structure of the present invention.

[0029] Figure 3 It is a schematic diagram of the structure of the ICT test unit of the present invention.

[0030] Figure 4 It is the present invention Figure 3 The enlarged structure diagram at A in.

[0031] Figure 5 It is the present invention Figure 2 The enlarged structure diagram at B in.

[0032] Figure 6 It is a schematic plan view of the horizontal component of the present invention.

[0033] Figure 7 It is a schematic diagram of the structure of the fixing unit and the driving unit of the present invention.

[0034] Figure 8 It is a schematic plan sectional view of the fixing unit of the present invention.

[0035] Figure 9 It is a schematic diagram of the structure of the driving unit of the present invention.

[0036] Figure 10 It is a top view of the driving unit of the present invention.

[0037] In the figure, 1 is the bottom plate; 10 is the support plate; 11 is the rotating shaft; 12 is the swing plate; 13 is the swing shaft; 14 is the guard plate; 15 is the transmission shaft; 16 is the L-shaped plate; 2 is the ICT test unit; 20 is the sliding groove; 21 is the reciprocating screw rod; 22 is the sliding plate; 23 is the rectangular frame; 24 is the ICT tester; 25 is the electrical contact piece; 26 is the mounting post; 27 is the rubber ring; 28 is the probe; 3 is the FCT test unit; 30 is the lifting plate; 31 is the FCT tester; 32 is the docking probe; 4 is the horizontal component; 40 is the structure groove; 41 is the reversing shaft; 42 is the reversing gear; 43 is the fixed gear ring; 44 is the transmission mechanism; 5 is the fixing unit; 50 is the round rod; 51 is the strip plate; 52 is the conductive plate; 53 is the linkage plate; 54 is the spring rod; 55 is the semi-circular groove; 56 is the spherical ball; 6 is the driving unit; 60 is the L-shaped contact plate; 61 is the abutting rod; 62 is the support strip plate; 63 is the electric push rod; 64 is the triangular inclined block; 7 is the driving unit; 70 is the bent plate; 71 is the driving shaft; 72 is the ratchet; 73 is the ferrule; 74 is the pawl. Detailed implementation mode

[0038] The following is combined with Figures 1 to 10 The embodiments of the present invention will be described in detail below, but the present invention can be implemented in many different ways defined and covered by the claims.

[0039] The embodiment of the present application discloses an ICT and FCT combined detection device. It should be noted that this combined detection device is mainly applied in the process of combined testing of ICT and FCT for automotive circuit boards. In terms of technical effects, it can respectively perform ICT and FCT tests on the circuit board in a synchronous and alternating manner to determine whether the circuit board is qualified; in particular, the present invention can also separate the circuit boards with qualified test results and unqualified test results for transportation according to the test results of the circuit board, saving the trouble of manual screening and improving the detection efficiency.

[0040] Embodiment 1: Refer to Figure 1 and Figure 2 As shown, it includes a bottom plate 1, support plates 10, a rotating shaft 11, swing plates 12, a swing shaft 13, a guard plate 14, a transmission shaft 15, an L-shaped plate 16 and an ICT test unit 2. Symmetrically distributed support plates 10 are arranged on the bottom plate 1. A rotating shaft 11 is rotatably arranged between the support plates 10. The rotating shaft 11 can rotate under the limitation of the support plates 10, and the support plates 10 can limit the rotating shaft 11; Swing plates 12 are symmetrically sleeved outside the rotating shaft 11, and the rotating shaft 11 can drive the swing plates 12 to swing along its axis.

[0041] At the opposite ends of the swing plate 12, swing shafts 13 are rotatably arranged. Between the swing shafts 13, a guard plate 14 is provided. Between the guard plates 14, several conveyor shafts 15 evenly distributed along its extension section are rotatably arranged together. The swing plate 12 can drive the guard plate 14 to swing along the axis of the swing shaft 13 through the swing shaft 13. The conveyor shafts 15 are connected by a belt drive. One end of the conveyor shaft 15 on one side passes through the corresponding guard plate 14 for connection with an external drive device, enabling it to rotate, and indirectly driving all the conveyor shafts 15 to rotate through the belt drive, driving the circuit board to move between the guard plates 14. The swing shaft 13 is used to drive the guard plate 14 to rotate along its axis, and its function is to drive the guard plate 14 to always be parallel to the bottom plate 1 to prevent the circuit board from detaching from the conveyor shaft 15.

[0042] On the opposite sides of the support plate 10, an L-shaped plate 16 is provided. On the L-shaped plate 16, an ICT test unit 2 for performing ICT tests on the circuit board is provided. The L-shaped plate 16 is used to support the ICT test unit 2. When the conveyor shaft 15 drives the circuit board to correspond to the ICT test unit 2, the ICT test on the circuit board can be performed.

[0043] Refer to Figure 1 、 Figure 3 and Figure 4 As shown, that is, the ICT test unit 2 for performing ICT tests on the circuit board; specifically, the ICT test unit 2 includes a sliding groove 20, a reciprocating lead screw 21, a sliding plate 22, a rectangular frame 23, an ICT tester 24, an electrical contact piece 25, a mounting post 26, a rubber ring 27, and a probe 28. The sliding groove 20 is opened on the L-shaped plate 16. On the inner walls of both sides of the sliding groove 20, the reciprocating lead screw 21 is rotatably arranged. In one of the sliding grooves 20, a sliding plate 22 threadedly connected to the corresponding reciprocating lead screw 21 is slidably arranged. The reciprocating lead screw 21 can rotate in the sliding groove 20, that is, when the reciprocating lead screw 21 rotates, it can drive the sliding plate 22 to move in the up and down directions under the limitation of the sliding groove 20.

[0044] The rectangular frame 23 is arranged at the other end of the sliding plate 22. The ICT tester 24 is arranged on the rectangular frame 23. The rectangular frame 23 can drive the ICT tester 24 to move synchronously in the up and down directions; several mounting grooves distributed in a rectangle are opened at the lower end of the ICT tester 24. The electrical contact piece 25 is arranged on the inner wall of the mounting groove. A circular groove is also opened on the inner wall of the mounting groove. A mounting post 26 is slidably arranged in the mounting groove. A rubber ring 27 located in the circular groove is arranged on the outer side of the mounting post 26. The rubber ring 27 is made of an elastic material. A push rod is arranged at the lower end of the mounting post 26. A probe 28 is arranged at the telescopic end of the push rod. The mounting post 26 is clamped in the circular groove through the rubber ring 27.

[0045] The probe 28 is used to contact the pins of the upper circuit components on the circuit board. The mounting post 26 is electrically connected to the ICT tester 24 through the electrical contact piece 25. And the mounting post 26 performs ICT testing on the circuit board through the push rod and the probe 28. When it is necessary to adjust the position of the probe 28 according to the distribution position of the circuit board components, the mounting post 26 can be manually pulled out of the corresponding mounting groove, and then the mounting post 26 can be inserted into the corresponding mounting groove.

[0046] Continue to refer to Figure 3 As shown, that is, the height of the other sliding groove 20 is higher than that of one side of the sliding groove 20, and an FCT test unit 3 for performing FCT testing on the circuit board is provided in the other sliding groove 20; specifically, the FCT test unit 3 includes a lifting plate 30, an FCT tester 31, and a docking probe 32. The lifting plate 30 is slidably arranged in the sliding groove 20 and is in threaded connection with the corresponding reciprocating lead screw 21. The FCT tester 31 is arranged on the lifting plate 30. Docking probes 32 are symmetrically arranged at the lower end of the lifting plate 30. That is, the reciprocating lead screw 21 can drive the FCT tester 31 to move in the up and down directions through the lifting plate 30. And when the FCT tester 31 is moving, it can also contact the positive and negative poles at both ends of the circuit board through the docking probes 32 respectively, so that the FCT tester 31 can perform FCT testing on the circuit board through the docking probes 32.

[0047] Since the height of one side of the sliding groove 20 is higher, that is, the distribution positions of the two reciprocating lead screws 21 are also inconsistent. Therefore, when the two reciprocating lead screws 21 rotate synchronously, the ICT test unit 2 will first indirectly contact the circuit board for ICT testing, and then after detachment, the FCT tester 31 will indirectly contact the circuit board to perform FCT testing on the circuit board. If the circuit board fails to meet the standard during ICT testing, when the FCT contacts the circuit board, it will not perform testing on the circuit board and will directly detach, saving time.

[0048] It should be noted that the "ICT tester 24" and the "FCT tester 31" mentioned in the above implementation process are both well-known technologies. Their respective functions in this implementation process are to test the components of the circuit board one by one and to perform electrical operation testing on the entire circuit board. Therefore, they will not be elaborated in this implementation process.

[0049] Continue to refer to Figure 1 、 Figure 5 and Figure 6As shown, a horizontal component 4 for making the guard plate 14 perpendicular to the bottom plate 1 is provided on the swing plate 12 on one side; specifically, the horizontal component 4 includes a structure groove 40, a reversing shaft 41, a reversing gear 42, a fixed gear ring 43, and a transmission mechanism 44. The structure groove 40 is opened on the swing plate 12 on one side, and one end of the corresponding swing shaft 13 is inserted into the structure groove 40. Two reversing shafts 41 are symmetrically and rotatably arranged on the inner wall of the structure groove 40. Reversing gears 42 are sleeved on the outer sides of the reversing shafts 41, and the two reversing gears 42 mesh with each other, that is, the reversing gear 42 can drive the corresponding reversing shaft 41 to rotate. When the reversing gear 42 on one side rotates, it can drive the reversing gear 42 on the other side to rotate.

[0050] One side of the reversing shaft 41 is connected to the corresponding swing shaft 13 by a belt drive, that is, the reversing shaft 41 can drive the swing shaft 13 to rotate by a belt drive; a fixed gear ring 43 is also provided on one side of the support plate 10, and the fixed gear ring 43 is located in the structure groove 40 and meshes with the corresponding reversing gear 42. That is, when the rotating shaft 11 drives the swing plate 12 to swing, the reversing gear 42 on one side will drive another reversing gear 42 and the reversing shaft 41 to rotate under the action of the fixed gear ring 43. The reversing shaft 41 will indirectly drive the guard plate 14 to rotate by a belt drive, so that the guard plate 14 rotates in a region where the direction is opposite to the rotation direction of the rotating shaft 11 with respect to the conveyor shaft 15, thereby keeping the guard plate 14 parallel to the bottom plate 1 and preventing the circuit board on the conveyor shaft 15 from falling off.

[0051] Two transmission mechanisms 44 are also symmetrically provided on the bottom plate 1, and the transmission mechanisms 44 are respectively distributed on both sides of the support plate 10. The circuit board on one side of the transmission mechanism 44 can move to the conveyor shaft 15. Then the conveyor shaft 15 rotates to move the circuit board to the middle of the guard plate 14. Then the conveyor shaft 15 drives the circuit board to the lower ends of the ICT test unit 2 and the FCT test unit 3. After the test is completed, the conveyor shaft 15 is indirectly driven by the rotating shaft 11 to drive the circuit board to another transmission mechanism 44, and then the tested circuit board is transmitted to another transmission mechanism 44.

[0052] Refer to Figure 7 and Figure 8 As shown, a fixing unit 5 for fixing the circuit board is provided between the guard plates 14; specifically, the fixing unit 5 includes a round rod 50, a strip plate 51, a conductive plate 52, a linkage plate 53, a spring rod 54, a semi-circular groove 55, and a spherical ball 56. Two circular hole grooves are symmetrically opened at the upper ends of the guard plates 14. The round rod 50 is slidably arranged in the circular hole grooves. A strip plate 51 is jointly arranged between the two corresponding round rods 50 on the two guard plates 14. The strip plate 51 can drive the corresponding round rod 50 to move up and down in the circular hole grooves.

[0053] A conductive plate 52 is provided at the lower end of the strip plate 51, and a linkage plate 53 is provided between the round rods 50 on the same guard plate 14. The linkage plate 53 can enable the round rods 50 on two different guard plates 14 to move synchronously, and the strip plate 51 can drive the conductive plate 52 to move synchronously, clamping and limiting the positive and negative poles of the circuit board. That is, when the docking probe 32 descends, it will contact the conductive plate 52, and the circuit board will be tested by the conductive plate 52 through the conductive plate 52.

[0054] A receiving groove is provided on the inner wall of the circular hole groove, and a spring rod 54 is provided in the receiving groove. Two semicircular grooves 55 symmetrically distributed up and down are also provided on the inner wall of the receiving groove. A round ball 56 is also rotatably provided at the telescopic end of the spring rod 54, and the round ball 56 is located in one of the semicircular grooves 55. The round rod 50 is located on the upper side of the circular groove in the initial state, that is, at this time the spring rod 54 drives the round ball 56 to be located in the semicircular groove 55 at the upper end to limit the round rod 50, indirectly making the strip plate 51 and the guard plate 14 always maintain a distance, and the circuit board on the transmission mechanism 44 can be moved to the transmission shaft 15. After that, the round rod 50 will drop after being driven by external force. At this time, the spring rod 54 will drive the round ball 56 to be clamped in the semicircular groove 55 at the lower end, and at the same time the conductive plate 52 limits the two sides of the circuit board.

[0055] Reference Figure 7 As shown, a driving unit 6 for driving the round rod 50 to move up and down is provided on the transmission mechanism 44 on one side; specifically, the driving unit 6 includes an L-shaped touch plate 60, a resistance rod 61, a support strip 62, an electric push rod 63 and a triangular bevel block 64, and two L-shaped touch plates 60 are symmetrically arranged on both sides of a transmission mechanism 44. The outer side of the two round rods 50 close to the side of the L-shaped touch plate 60 is provided with a resistance rod 61, and the resistance rod 61 corresponds to the lower end surface of the L-shaped touch plate 60, that is, when the rotating shaft 11 indirectly drives the guard plate 14 to rotate along its axis, the resistance rod 61 will contact the lower end of the L-shaped touch plate 60, driving the round rod 50 to descend, and then indirectly driving the conductive plate 52 to clamp the circuit board.

[0056] A support strip 62 is also provided on the base plate 1, and an electric push rod 63 is provided on the upper end of the support strip 62. A triangular bevel block 64 is provided on the telescopic end of the electric push rod 63, and the inclined surface of the triangular bevel block 64 corresponds to the lower end surface of the interference rod 61. When the circuit board is driven to correspond to another transmission mechanism 44, the electric push rod 63 will push the triangular bevel block 64 to conflict with the lower end of the interference rod 61, driving the interference rod 61 to drive the corresponding round rod 50 to rise. At this time, the circuit board will be released from the limit state and can be transferred to the transmission mechanism 44 by the transmission shaft 15. If the circuit board test fails, the rotating shaft 11 will continue to indirectly drive the circuit board to correspond to the initial transmission mechanism 44, and transmit the circuit board back to the processing area through the transmission mechanism 44 for rework.

[0057] Embodiment 2: Referring to Figure 7 As shown, on the basis of Embodiment 1, in order to drive the rotation of the rotating shaft 11 and the reciprocating lead screw 21, a driving unit 7 is provided on the L-shaped plate 16 on one side; specifically, the driving unit 7 includes a bent plate 70, a driving shaft 71, a ratchet wheel 72, a ferrule 73 and a ratchet pawl 74. The bent plate 70 is provided on the L-shaped plate 16 on one side, and the driving shaft 71 is rotatably penetrated through the bent plate 70. The bent plate 70 is used to support the driving shaft 71, and the driving shaft 71 can rotate under the support of the bent plate 70.

[0058] And one end of the driving shaft 71 is connected to the reciprocating lead screw 21 on one side by means of driving gear transmission. One end of the two reciprocating lead screws 21 passes through the outer wall of the corresponding L-shaped plate 16 and is connected to each other by means of belt transmission. That is, the driving shaft 71 can drive the reciprocating lead screw 21 to rotate by means of bevel gear transmission, and the two reciprocating lead screws 21 can rotate synchronously by means of belt transmission.

[0059] One end of the rotating shaft 11 passes through the L-shaped plate 16 and a ratchet wheel 72 is sleeved on the outside of the driving shaft 71. The ratchet wheel 72 can drive the corresponding rotating shaft 11 and driving shaft 71 to rotate; a ferrule 73 is sleeved on the outside of the ratchet wheel 72, and a ratchet pawl 74 meshing with the ratchet wheel 72 is rotatably arranged on the inner wall of the ferrule 73 through a ratchet shaft. The ferrule 73 can rotate on the outside of the corresponding ratchet wheel 72, and can drive the ratchet wheel 72 to rotate through the corresponding ratchet pawl 74 when rotating.

[0060] And the extending directions of the two ratchet pawls 74 are inconsistent. The ferrules 73 are connected to each other by means of belt transmission. By driving one ferrule 73 by an external driving device, the two ferrules 73 can be driven to rotate synchronously by means of belt transmission. And because the extending directions of the two ratchet pawls 74 are inconsistent, that is, when the two ferrules 73 rotate synchronously, only one ratchet wheel 72 will rotate. That is, by controlling the forward and reverse rotation of the external driving device, the rotating shaft 11 or the reciprocating lead screw 21 can be indirectly driven to rotate and drive separately.

[0061] During operation: First step, place the produced circuit board on the transmission mechanism 44, and transmit the circuit board to the transmission shaft 15 through the transmission mechanism 44 on one side. Move the circuit board between the guard plates 14 through the rotation of the transmission shaft 15, and then indirectly drive the circuit board to move along its axis through the rotating shaft 11.

[0062] Second step: After the circuit board moves between the guard plates 14, limit the circuit board through the fixing unit 5, and drive the guard plates 14 to always be parallel to the bottom plate 1 by means of the horizontal component 4, prevent the circuit board from detaching from the transmission shaft 15, and enable a good angle for subsequent testing.

[0063] Step 3: Indirectly drive the circuit board to the ICT test unit 2 and the FCT test unit 3 through the rotating shaft 11. First, perform an ICT test on the circuit board. Drive the probe 28 in the ICT test unit 2 to contact the component pins on the circuit board through the driving unit 7, and test each component one by one.

[0064] Step 4: Then, perform an FCT test on the circuit board. If the circuit board fails the ICT test, that is, the circuit board is already unqualified, there is no need to perform the FCT test anymore, which saves time.

[0065] Step 5: Release the limit of the fixing unit 5 on the circuit board that has completed the test through the driving unit 6. Transfer the qualified circuit board to another transfer mechanism 44 and transport it to the next process. Indirectly drive the circuit board that fails the test to correspond to the initial transfer mechanism 44 through the rotating shaft 11, move the circuit board to the initial transfer mechanism 44, and transport it to the initial processing station for repair.

[0066] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0067] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An ICT and FCT combined detection device, including a bottom plate (1), characterized in that: On the described bottom plate (1), symmetrically distributed support plates (10) are provided. A rotating shaft (11) is rotatably arranged between the support plates (10). Swing plates (12) are symmetrically sleeved on the outer side of the rotating shaft (11). Swing shafts (13) are rotatably arranged at opposite ends of the swing plates (12). A guard plate (14) is arranged between the swing shafts (13). A plurality of conveyor shafts (15) evenly distributed along its extension section are rotatably arranged between the guard plates (14). And on the opposite sides of the support plates (10), L-shaped plates (16) are provided. An ICT testing unit (2) for performing ICT testing on the circuit board is arranged on the L-shaped plates (16). The described ICT testing unit (2) includes a sliding groove (20) opened on the L-shaped plate (16). Reciprocating lead screws (21) are rotatably arranged on the inner walls of both sides of the sliding groove (20). A sliding plate (22) threadedly connected to the corresponding reciprocating lead screw (21) is slidably arranged in one side of the sliding groove (20). The height of the other sliding groove (20) is higher than that of one side sliding groove (20). And an FCT testing unit (3) for performing FCT testing on the circuit board is arranged in the other sliding groove (20). The FCT testing unit (3) includes a lifting plate (30) slidably arranged in the sliding groove (20) and threadedly connected to the corresponding reciprocating lead screw (21). An FCT tester (31) is arranged on the lifting plate (30). Docking probes (32) are symmetrically arranged at the lower end of the lifting plate (30). A horizontal component (4) for making the guard plate (14) perpendicular to the bottom plate (1) is arranged on one side of the swing plate (12). The horizontal component (4) includes a structural groove (40) opened on one side of the swing plate (12). And one end of the corresponding swing shaft (13) penetrates into the structural groove (40). Two reversing shafts (41) are symmetrically rotatably arranged on the inner wall of the structural groove (40). Reversing gears (42) are sleeved on the outer sides of the reversing shafts (41). And the two reversing gears (42) mesh with each other. One side of the reversing shaft (41) is connected to the corresponding swing shaft (13) by means of belt drive. A fixed gear ring (43) is also arranged on one side of the support plate (10). And the fixed gear ring (43) is located in the structural groove (40) and meshes with the corresponding reversing gear (42). Two transmission mechanisms (44) are also symmetrically arranged on the bottom plate (1). And the transmission mechanisms (44) are respectively distributed on both sides of the support plate (10).

2. The combined ICT and FCT detection device according to claim 1, wherein: The ICT testing unit (2) also includes a rectangular frame (23) arranged at the other end of the sliding plate (22). An ICT tester (24) is arranged on the rectangular frame (23). A plurality of rectangularly distributed mounting grooves are opened at the lower end of the ICT tester (24). Electric contact pieces (25) are arranged on the inner walls of the mounting grooves. Circular grooves are also opened on the inner walls of the mounting grooves. Mounting posts (26) are slidably arranged in the mounting grooves. Rubber rings (27) located in the circular grooves are arranged on the outer sides of the mounting posts (26). A push rod is arranged at the lower end of the mounting post (26). A probe (28) is arranged at the telescopic end of the push rod.

3. An ICT and FCT combined detection device according to claim 2, characterized in that: The rubber ring (27) is made of elastic material.

4. An ICT and FCT combined detection device according to claim 1, characterized in that: A fixing unit (5) for fixing the circuit board is arranged between the described guard plates (14). The fixing unit (5) includes two circular hole grooves symmetrically formed in the guard plates (14). A circular rod (50) is slidably arranged in the circular hole grooves. A strip plate (51) is jointly arranged between the two corresponding circular rods (50) on the two guard plates (14). And a conductive plate (52) is arranged at the lower end of the strip plate (51). A linkage plate (53) is jointly arranged between the circular rods (50) on the same guard plate (14).

5. An ICT and FCT combined detection device according to claim 4, characterized in that: A receiving groove is formed in the inner wall of the described circular hole groove. A spring rod (54) is arranged in the receiving groove. Two semi-circular grooves (55) symmetrically distributed up and down are further formed in the inner wall of the receiving groove. A circular ball (56) is rotatably arranged at the telescopic end of the spring rod (54). And the circular ball (56) is located in one of the semi-circular grooves (55).

6. An ICT and FCT combined detection device according to claim 4, characterized in that: A driving unit (6) for driving the circular rod (50) to move up and down is arranged on one side of the described transmission mechanism (44). The driving unit (6) includes L-shaped plates (16) symmetrically arranged on both sides of one transmission mechanism (44). A resisting rod (61) is sleeved outside the two circular rods (50) close to the L-shaped plates (16). And the resisting rod (61) corresponds to the lower end surface of the L-shaped plates (16).

7. An ICT and FCT combined detection device according to claim 6, characterized in that: A supporting strip plate (62) is further arranged on the described bottom plate (1). An electric push rod (63) is arranged at the upper end of the supporting strip plate (62). A triangular inclined block (64) is arranged at the telescopic end of the electric push rod (63). And the inclined surface of the triangular inclined block (64) corresponds to the lower end surface of the resisting rod (61).

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