ICT and FCT combined detection device

Abstract

The invention relates to the field of automobile circuit board detection, in particular to an ICT and FCT combined detection device which comprises a bottom plate, symmetrically-distributed supporting plates are arranged on the bottom plate, a rotating shaft is arranged between the supporting plates in a rotating mode, the outer side of the rotating shaft is symmetrically sleeved with swing plates, swing shafts are arranged at the opposite ends of the swing plates in a rotating mode, and a protection plate is arranged between the swing shafts. A plurality of transmission shafts which are uniformly distributed along the extension section of the support plate are jointly and rotationally arranged between the protection plates, an L-shaped plate is arranged on one side, opposite to each other, of the support plate, an ICT test unit used for performing ICT test on the circuit board is arranged on the L-shaped plate, and the transmission shafts are indirectly driven to swing through cooperation between the transmission shafts and the rotating shafts, so that the ICT test efficiency is improved. The circuit board on the transmission mechanism on one side can be driven to the lower ends of the ICT test unit and the FCT test unit, the ICT test and the FCT test are carried out on the circuit board respectively, if the ICT test of the circuit board cannot be completed, the FCT test does not need to be carried out, the test time is saved, and the applicability of the device is improved.

Description

Technical Field

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

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

[0003] ICT testing is mainly carried out on 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 value and polarity of components such as resistors, capacitors, and inductors. ICT testing can check component failures and welding failures. It is usually performed in the next process of PCBA welding. Problematic boards (such as reverse welding of components, 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 test steps, the product is switched to the power-on state to test the parameters of the product during normal operation.

[0004] However, the existing automobile mainboard detection device can usually only perform single-point touch test on the circuit board, that is, contacting the components through a single touch rod, which is inefficient. Even if it can perform synchronous contact detection on multiple components, after replacing the circuit board with other specifications, it is necessary to simultaneously replace it with a new touch detection device. The original touch detection device cannot be applied to mainboards of other specifications and has low applicability.

[0005] For example, Chinese patent publication number CN105486996A discloses a circuit board assembly detection system.

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

[0007] However, the above detection system still has some shortcomings in actual use: 1. Although the above detection system can perform ICT testing on circuit boards, the test contacts of its ICT testing equipment cannot be customized, that is, it can only test specific circuit boards and cannot be applied to circuit boards of other different specifications. Therefore, the applicability of the above test system is low.

[0008] 2. Although the above-mentioned test system can perform multiple system tests on circuit boards, it is unable to classify the tested circuit boards as qualified, that is, to separate the qualified and unqualified circuit boards according to whether the test results of the circuit boards meet the standards, and transport them to the corresponding areas. Manual or external equipment is still required to distinguish the circuit boards, which further reduces its applicability.

[0009] Therefore, based on the above-stated viewpoints, there is still room for improvement in existing ICT and FCT testing devices. Summary of the invention

[0010] In order to solve the above problems, the present invention provides an ICT and FCT combined detection device, including a base plate, symmetrically distributed support plates are arranged on the base plate, a rotating shaft is arranged between the support plates for common rotation, a swing plate is symmetrically sleeved on the outer side of the rotating shaft, a swing shaft is rotatably arranged at the opposite end of the swing plate, a guard plate is arranged between the swing shafts, a plurality of transmission shafts evenly distributed along the extension sections thereof are arranged for common rotation between the guard plates, an L-shaped plate is arranged on the opposite side of the support plate, and an ICT test unit for performing ICT test on the circuit board is arranged on the L-shaped plate.

[0011] The ICT test unit includes a sliding groove opened on an L-shaped plate, reciprocating screws are rotatably arranged on the inner walls of both sides of the sliding groove, and a sliding plate threadably connected to the corresponding reciprocating screw is slidably arranged in the sliding groove on one side.

[0012] Preferably, the ICT test unit also includes a rectangular frame arranged at the other end of the sliding plate, an ICT tester is arranged on the rectangular frame, a plurality of rectangularly distributed installation grooves are provided at the lower end of the ICT tester, an electrical contact piece is provided on the inner wall of the installation groove, a circular groove is also provided on the inner wall of the installation groove, an installation column is slidably arranged in the installation groove, a rubber ring located in the circular groove is provided on the outer side of the installation column, a push rod is provided at the lower end of the installation column, and a probe is provided at the telescopic end of the push rod.

[0013] Preferably, the rubber ring is made of elastic material.

[0014] Preferably, the height of the other sliding groove is higher than the height of the sliding groove on one side, and an FCT test unit for performing FCT test on the circuit board 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 screw rod, the lifting plate is provided with an FCT tester, and docking probes are symmetrically arranged at the lower end of the lifting plate.

[0015] Preferably, a horizontal component for making the guard plate and the bottom plate vertically distributed is provided on the swing plate on one side, and the horizontal component includes a structural groove opened on the swing plate on one side, and one end of the corresponding swing shaft is inserted into the structural groove, and two reversing shafts are symmetrically rotated on the inner wall of the structural groove, and reversing gears are sleeved on the outer sides of the reversing shafts, and the two reversing gears are meshed with each other.

[0016] Preferably, the reversing shaft on one side is connected to the corresponding swing shaft by means of a belt drive, and a fixed gear ring is also provided on the support plate on one side, and the fixed gear ring is located in the structural groove and meshes with the corresponding reversing gear, and two transmission mechanisms are also symmetrically provided on the bottom plate, and the transmission mechanisms are respectively distributed on both sides of the support plate.

[0017] Preferably, a fixing unit for fixing the circuit board is arranged between the guard plates, and the fixing unit includes two circular hole grooves symmetrically opened on the guard plates, and round rods are slidably arranged in the circular hole grooves, and a strip plate is commonly 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, and a linkage plate is commonly arranged between the round rods on the same guard plate.

[0018] Preferably, a receiving groove is provided on the inner wall of the circular hole groove, a spring rod is arranged in the receiving groove, two semicircular grooves symmetrically distributed up and down are also provided on the inner wall of the receiving groove, a round ball is rotatably provided at the telescopic end of the spring rod, and the round ball is located in one of the semicircular grooves.

[0019] Preferably, a driving unit for driving the round rod to move up and down is provided on the transmission mechanism on one side, and the driving unit includes L-shaped plates symmetrically arranged on both sides of a transmission mechanism, and a resistance rod is sleeved on the outer side of the two round rods close to one side of the L-shaped plate, and the resistance rod corresponds to the lower end surface of the L-shaped plate.

[0020] Preferably, a supporting strip is further provided on the bottom plate, an electric push rod is provided on the upper end of the supporting strip, a triangular oblique block is provided on the telescopic end of the electric push rod, and the inclined surface of the triangular oblique block corresponds to the lower end surface of the abutment rod.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present invention can drive the circuit board on one side of the transmission mechanism to the lower end of the ICT test unit and the FCT test unit through the cooperation between the transmission shafts and the indirect swing of the rotation shaft, and perform ICT test and FCT test on the circuit board respectively. If the circuit board cannot complete the ICT test, there is no need to perform the FCT test, which saves the test time and improves the applicability of the present invention.

[0022] 2. After the test is completed, the present invention can also use the driving unit to drive the fixing unit to cancel the fixation of the circuit board, and move the circuit board to different transmission mechanisms based on whether the test result of the circuit board meets the standard, thereby eliminating the trouble of manual selection and improving the efficiency of the test.

[0023] 3. When the rotating shaft and the reciprocating screw of the present invention rotate, only one driving end of the driving unit is needed to synchronize the rotation of both parties, which saves the use of driving equipment, further saves costs, and facilitates subsequent repair and maintenance. The present invention can also drive the guard plate and the transmission shaft to always remain horizontal with the bottom through the horizontal component, preventing the circuit board from falling due to the tilt of the guard plate when the circuit board is not clamped and fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the swing plate of the present invention.

[0027] Figure 3 It is a structural schematic diagram of the ICT test unit of the present invention.

[0028] Figure 4 The present invention Figure 3 A magnified view of the structure at center.

[0029] Figure 5 The present invention Figure 2 A magnified view of the structure at point B.

[0030] Figure 6 It is a schematic diagram of the planar structure of the horizontal component of the present invention.

[0031] Figure 7 It is a structural schematic diagram of the fixing unit and the driving unit of the present invention.

[0032] Figure 8 It is a schematic diagram of the planar cross-sectional structure of the fixing unit of the present invention.

[0033] Fig. 9 It is a structural schematic diagram of the drive unit of the present invention.

[0034] Fig.10 It is a plan view of the drive unit of the present invention.

[0035] In the figure, 1, bottom plate; 10, support plate; 11, rotating shaft; 12, swing plate; 13, swing shaft; 14, guard plate; 15, transmission shaft; 16, L-shaped plate; 2, ICT test unit; 20, sliding groove; 21, reciprocating screw rod; 22, sliding plate; 23, rectangular frame; 24, ICT tester; 25, electrical contact sheet; 26, mounting column; 27, rubber ring; 28, probe; 3, FCT test unit; 30, lifting plate; 31, FCT tester; 32, docking probe; 4, horizontal assembly; 40 , structural groove; 41, reversing shaft; 42, reversing gear; 43, fixed gear ring; 44, transmission mechanism; 5, fixed unit; 50, round rod; 51, strip plate; 52, conductive plate; 53, linkage plate; 54, spring rod; 55, semicircular groove; 56, round ball; 6, driving unit; 60, L-shaped touch plate; 61, resistance rod; 62, supporting strip plate; 63, electric push rod; 64, triangular inclined block; 7, driving unit; 70, bending plate; 71, driving shaft; 72, ratchet; 73, ring; 74, pawl. DETAILED DESCRIPTION

[0036] The following combination Figures 1 to 10 While embodiments of the invention have been described in detail, the invention can be implemented in many different ways as defined and covered by the claims.

[0037] The embodiment of the present application discloses a combined ICT and FCT detection device, which explains that the combined detection device is mainly used in the process of performing combined ICT and FCT tests on automotive circuit boards. In terms of technical effect, the ICT and FCT tests can be performed on the circuit boards in a synchronous and alternating manner to determine whether the circuit boards are qualified. In particular, the present invention can also separate qualified and unqualified circuit boards for transportation based on the test results of the circuit boards, thereby eliminating the trouble of manual screening and improving detection efficiency.

[0038] Example 1: Reference Figure 1 and Figure 2 As shown, it includes a base plate 1, a support plate 10, a rotating shaft 11, a swing plate 12, a swing shaft 13, a guard plate 14, a transmission shaft 15, an L-shaped plate 16 and an ICT test unit 2. The base plate 1 is provided with symmetrically distributed support plates 10, and the support plates 10 are provided with rotating shafts 11 for common rotation. The rotating shaft 11 can rotate under the limit of the support plates 10, and the support plates 10 can limit the rotating shaft 11; the swing plates 12 are symmetrically sleeved on the outer side of the rotating shaft 11, and the rotating shaft 11 can drive the swing plates 12 to swing along its axis.

[0039] A swing shaft 13 is rotatably provided at one end opposite to the swing plate 12, a guard plate 14 is provided between the swing shafts 13, and several transmission shafts 15 evenly distributed along the extension section are rotatably provided between the guard plates 14. 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 transmission shafts 15 are connected by belt transmission. One end of the transmission shaft 15 on one side passes through the corresponding guard plate 14 for connecting to an external driving device so that it can rotate, and indirectly drives all the transmission shafts 15 to rotate through belt transmission, 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 remain parallel to the base plate 1 to prevent the circuit board from escaping from the transmission shaft 15.

[0040] An L-shaped plate 16 is provided on the opposite side of the support plate 10, and an ICT test unit 2 for performing ICT testing on the circuit board is provided on the L-shaped plate 16. The L-shaped plate 16 is used to support the ICT test unit 2. When the transmission shaft 15 drives the circuit board to correspond to the ICT test unit 2, the circuit board can be ICT tested.

[0041] Reference Figure 1 , Figure 3 and Figure 4 As shown, an ICT test unit 2 is used to perform ICT testing on a circuit board; specifically, the ICT test unit 2 includes a sliding groove 20, a reciprocating screw 21, a sliding plate 22, a rectangular frame 23, an ICT tester 24, an electrical contact piece 25, a mounting column 26, a rubber ring 27 and a probe 28. The sliding groove 20 is provided on an L-shaped plate 16, and reciprocating screws 21 are rotatably provided on the inner walls of both sides of the sliding groove 20. A sliding plate 22 threadedly connected to the corresponding reciprocating screw 21 is slidably provided in the sliding groove 20 on one side. The reciprocating screw 21 can rotate in the sliding groove 20, that is, when the reciprocating screw 21 rotates, it can drive the sliding plate 22 to move up and down under the limit of the sliding groove 20.

[0042] A rectangular frame 23 is arranged at the other end of the sliding plate 22, and an 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; a plurality of rectangularly distributed installation grooves are provided at the lower end of the ICT tester 24, and an electrical contact piece 25 is provided on the inner wall of the installation groove. A circular groove is also provided on the inner wall of the installation groove, and an installation column 26 is slidably arranged in the installation groove. A rubber ring 27 located in the circular groove is arranged on the outer side of the installation column 26, and the rubber ring 27 is made of elastic material. A push rod is provided at the lower end of the installation column 26, and a probe 28 is provided at the telescopic end of the push rod. The installation column 26 is clamped in the circular groove through the rubber ring 27.

[0043] The probe 28 is used to contact the pins of the circuit components on the upper end of the circuit board. The mounting column 26 is electrically connected to the ICT tester 24 through the electrical contact piece 25, and the mounting column 26 performs ICT testing on the circuit board through the push rod and the probe 28. When the position of the probe 28 needs to be adjusted according to the distribution position of the components on the circuit board, the mounting column 26 is manually pulled out from the corresponding mounting slot, and then the mounting column 26 is inserted into the corresponding mounting slot.

[0044] Continue to refer to Figure 3 As shown, the height of the other sliding groove 20 is higher than that of the sliding groove 20 on one side, and an FCT test unit 3 for performing FCT test on the circuit board is arranged 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 threadedly connected with the corresponding reciprocating screw 21, the FCT tester 31 is arranged on the lifting plate 30, and the docking probe 32 is symmetrically arranged at the lower end of the lifting plate 30, that is, the reciprocating screw 21 can drive the FCT tester 31 to move in the up and down directions through the lifting plate 30, and the FCT tester 31 can also contact the positive and negative poles at both ends of the circuit board through the docking probe 32 when moving, so that the FCT tester 31 can perform FCT test on the circuit board through the docking probe 32.

[0045] Since the height of the sliding groove 20 on one side is relatively high, that is, the distribution positions of the two reciprocating screws 21 are also inconsistent, when the two reciprocating screws 21 rotate synchronously, the ICT test unit 2 will first indirectly contact the circuit board for the ICT test, and then after disengagement, the FCT tester 31 will indirectly contact the circuit board to perform the FCT test on the circuit board. If the circuit board does not meet the standards during the ICT test, the FCT will not test the circuit board when it contacts the circuit board, and will directly disengage to save time.

[0046] It should be noted that the "ICT tester 24" and "FCT tester 31" proposed in the above implementation process are both well-known technologies. Their roles in this implementation process are to test the components of the circuit board one by one and to perform electrical operation test on the circuit board as a whole. Therefore, they will not be repeated in this implementation process.

[0047] Continue to refer to Figure 1 , Figure 5 and Figure 6As shown, a horizontal component 4 for making the guard plate 14 and the bottom plate 1 vertically distributed is provided on the swing plate 12 on one side; specifically, the horizontal component 4 includes a structural groove 40, a reversing shaft 41, a reversing gear 42, a fixed gear ring 43 and a transmission mechanism 44, the structural 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 structural groove 40, and two reversing shafts 41 are symmetrically rotated on the inner wall of the structural groove 40, and reversing gears 42 are sleeved on the outer sides of the reversing shafts 41, and the two reversing gears 42 are meshed with each other, that is, the reversing gears 42 can drive the corresponding reversing shaft 41 to rotate, and the reversing gear 42 on one side can drive the reversing gear 42 on the other side to rotate when rotating.

[0048] The reversing shaft 41 on one side is connected to the corresponding swing shaft 13 by belt transmission, that is, the reversing shaft 41 can drive the swing shaft 13 to rotate by belt transmission; a fixed gear ring 43 is also provided on the support plate 10 on one side, and the fixed gear ring 43 is located in the structural 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 the other reversing gear 42 and the reversing shaft 41 to rotate under the action of the fixed gear ring 43, and the reversing shaft 41 will indirectly drive the guard plate 14 to rotate by belt transmission, so that the guard plate 14 and the transmission shaft 15 rotate toward the area opposite to the rotation direction of the rotating shaft 11, so that the guard plate 14 and the base plate 1 remain parallel to prevent the circuit board on the transmission shaft 15 from falling off.

[0049] Two transmission mechanisms 44 are symmetrically arranged on the base plate 1, and the transmission mechanisms 44 are respectively distributed on both sides of the support plate 10. The circuit board on the transmission mechanism 44 on one side can be moved to the transmission shaft 15, and then the transmission shaft 15 rotates to move the circuit board to the middle of the protective plate 14, and then the transmission shaft 15 drives the circuit board to the lower end of the ICT test unit 2 and the FCT test unit 3. After the test is completed, the transmission shaft 15 is indirectly driven by the rotating shaft 11 to drive the circuit board to another transmission mechanism 44, and then the circuit board that has completed the test is transmitted to another transmission mechanism 44.

[0050] Reference Figure 7 and Figure 8 As shown, a fixing unit 5 for fixing the circuit board is arranged 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 semicircular groove 55 and a round ball 56, two circular hole grooves are symmetrically opened at the upper end of the guard plate 14, and the round rod 50 is slidably arranged in the circular hole groove, and a strip plate 51 is commonly arranged between the two corresponding round rods 50 on the two guard plates 14, and the strip plate 51 can drive the corresponding round rod 50 to move up and down in the circular hole groove.

[0051] 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, and clamp and limit the positive and negative poles of the circuit board. That is, at this time, 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.

[0052] 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 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, and then the round rod 50 will drop after being driven by external force, and 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.

[0053] 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 supporting strip 62, an electric push rod 63 and a triangular inclined block 64, and two L-shaped touch plates 60 are symmetrically arranged on both sides of a transmission mechanism 44, and a resistance rod 61 is sleeved on the outer side of the two round rods 50 close to one side of the L-shaped touch plate 60, 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.

[0054] A supporting strip 62 is also provided on the bottom plate 1, and an electric push rod 63 is provided on the upper end of the supporting strip 62. A triangular bevel block 64 is provided at 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, and drive the interference rod 61 to drive the corresponding round rod 50 to rise. At this time, the circuit board will release the limit state and can be transmitted 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.

[0055] Example 2: Reference Figure 7 As shown, on the basis of the first embodiment, in order to drive the rotating shaft 11 and the reciprocating screw 21 to rotate, a driving unit 7 is provided on the L-shaped plate 16 on one side; specifically, the driving unit 7 includes a bending plate 70, a driving shaft 71, a ratchet 72, a ring 73 and a pawl 74, the bending plate 70 is provided on the L-shaped plate 16 on one side, and a driving shaft 71 is rotatably penetrated on the bending plate 70, the bending plate 70 is used to support the driving shaft 71, and the driving shaft 71 can rotate under the support of the bending plate 70.

[0056] One end of the driving shaft 71 is connected to the reciprocating screw rod 21 on one side through a driving gear transmission, and one end of the two reciprocating screw rods 21 passes through the outer wall of the corresponding L-shaped plate 16 and is connected to each other through a belt transmission. That is, the driving shaft 71 can drive the reciprocating screw rod 21 to rotate through a bevel gear transmission, and the two reciprocating screw rods 21 can rotate synchronously through a belt transmission.

[0057] One end of the rotating shaft 11 passes through the L-shaped plate 16 and the outside of the driving shaft 71 is sleeved with a ratchet 72, and the ratchet 72 can drive the corresponding rotating shaft 11 and the driving shaft 71 to rotate; a ring 73 is sleeved on the outside of the ratchet 72, and a pawl 74 that meshes with the ratchet 72 is provided on the inner wall of the ring 73 through the rotation of the ratchet shaft. The ring 73 can rotate on the outside of the corresponding ratchet 72, and when rotating, it can drive the ratchet 72 to rotate through the corresponding pawl 74.

[0058] Moreover, the extension directions of the two pawls 74 are inconsistent, and the rings 73 are connected by belt transmission. When one ring 73 is driven by an external driving device, the two rings 73 can be driven to rotate synchronously by belt transmission. And because the extension directions of the two pawls 74 are inconsistent, that is, when the two rings 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 screw 21 can be indirectly driven to rotate, and they can be driven separately.

[0059] During operation: the first step is to place the completed 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, and 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.

[0060] Step 2: After the circuit board is moved between the guard plates 14, the fixing unit 5 is used to limit the circuit board, and the horizontal component 4 is used to drive the guard plates 14 to always remain parallel to the base plate 1 to prevent the circuit board from escaping from the conveying axis 15, so that subsequent tests can be carried out at a good angle.

[0061] 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 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 the components one by one.

[0062] Step 4: Then perform FCT test on the circuit board. If the circuit board fails the ICT test, it means that the circuit board has failed and there is no need to perform FCT test again, which saves time.

[0063] Step 5: The driving unit 6 releases the limit of the fixing unit 5 on the circuit board that has completed the test, and the qualified circuit board is transferred to another transmission mechanism 44 and transported to the next process. The circuit board that failed the test is indirectly driven to the corresponding initial transmission mechanism 44 through the rotating shaft 11, and the circuit board is moved to the initial transmission mechanism 44 and transported to the initial processing station for repair.

[0064] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0065] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An ICT and FCT combined detection device, comprising a bottom plate (1), characterized in that: The bottom plate (1) is provided with symmetrically distributed support plates (10), a rotating shaft (11) is rotatably arranged between the support plates (10), a swing plate (12) is symmetrically sleeved on the outer side of the rotating shaft (11), a swing shaft (13) is rotatably arranged at the opposite end of the swing plate (12), a guard plate (14) is arranged between the swing shafts (13), a plurality of transmission shafts (15) are rotatably arranged between the guard plates (14) and are evenly distributed along their extension sections, and an L-shaped plate (16) is arranged on the opposite side of the support plates (10), and an ICT test unit (2) for performing ICT testing on a circuit board is arranged on the L-shaped plate (16); The ICT test unit (2) comprises a sliding groove (20) formed on an L-shaped plate (16), reciprocating screws (21) being rotatably arranged on the inner walls of both sides of the sliding groove (20), and a sliding plate (22) threadably connected to the corresponding reciprocating screw (21) being slidably arranged in the sliding groove (20) on one side.

2. The ICT and FCT combined detection device according to claim 1, characterized in that: The ICT test unit (2) further comprises a rectangular frame (23) arranged at the other end of the sliding plate (22), an ICT tester (24) being arranged on the rectangular frame (23), a plurality of rectangularly distributed mounting grooves being provided at the lower end of the ICT tester (24), an electrical contact sheet (25) being provided on the inner wall of the mounting groove, a circular groove being further provided on the inner wall of the mounting groove, a mounting column (26) being slidably provided in the mounting groove, a rubber ring (27) being provided in the circular groove on the outer side of the mounting column (26), a push rod being provided at the lower end of the mounting column (26), and a probe (28) being provided at the telescopic end of the push rod.

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

4. The ICT and FCT combined detection device according to claim 1, characterized in that: The height of the other sliding groove (20) is higher than that of the sliding groove (20) on one side, and an FCT test unit (3) for performing FCT testing on the circuit board is arranged in the other sliding groove (20), and the FCT test unit (3) comprises a lifting plate (30) slidably arranged in the sliding groove (20) and threadedly connected to the corresponding reciprocating screw rod (21), an FCT tester (31) is arranged on the lifting plate (30), and a docking probe (32) is symmetrically arranged at the lower end of the lifting plate (30).

5. The ICT and FCT combined detection device according to claim 1, characterized in that: The swing plate (12) on one side is provided with a horizontal component (4) for making the guard plate (14) and the bottom plate (1) vertically distributed. The horizontal component (4) includes a structural groove (40) opened on the swing plate (12) on one side, and one end of the corresponding swing shaft (13) is inserted into the structural groove (40). Two reversing shafts (41) are symmetrically rotated 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) are meshed with each other.

6. The ICT and FCT combined detection device according to claim 5, characterized in that: The reversing shaft (41) on one side is connected to the corresponding swing shaft (13) by means of a belt drive. A fixed gear ring (43) is also provided on the support plate (10) on one side. 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 provided on the bottom plate (1), and the transmission mechanisms (44) are respectively distributed on both sides of the support plate (10).

7. The 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 guard plates (14), the fixing unit (5) comprising two circular hole grooves symmetrically opened on the guard plates (14), a round rod (50) being slidably arranged in the circular hole groove, a strip plate (51) being arranged between the two corresponding round rods (50) on the two guard plates (14), a conductive plate (52) being arranged at the lower end of the strip plate (51), and a linkage plate (53) being arranged between the round rods (50) on the same guard plate (14).

8. The ICT and FCT combined detection device according to claim 7, characterized in that: The inner wall of the circular hole groove is provided with a receiving groove, a spring rod (54) is arranged in the receiving groove, and the inner wall of the receiving groove is also provided with two semicircular grooves (55) symmetrically distributed up and down, and a round ball (56) is rotatably arranged at the telescopic end of the spring rod (54), and the round ball (56) is located in one of the semicircular grooves (55).

9. The ICT and FCT combined detection device according to claim 6, characterized in that: A driving unit (6) for driving the round rod (50) to move up and down is arranged on the transmission mechanism (44) on one side, and the driving unit (6) comprises an L-shaped plate (16) symmetrically arranged on both sides of a transmission mechanism (44), and a resistance rod (61) is sleeved on the outer side of two round rods (50) close to one side of the L-shaped plate (16), and the resistance rod (61) corresponds to the lower end surface of the L-shaped plate (16).

10. The ICT and FCT combined detection device according to claim 9, characterized in that: The bottom plate (1) is further provided with a support strip (62), an electric push rod (63) is provided at the upper end of the support strip (62), a triangular inclined block (64) is provided 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 abutment rod (61).

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