A circuit board patch solder joint strength testing device

Abstract

The present invention relates to the technical field of circuit board detection, and specifically discloses a circuit board patch solder joint strength detection device, including a clamping mechanism, wherein the number of the clamping mechanisms is set to two, and the two clamping mechanisms are symmetrically arranged on both sides of the detector body, and the clamping mechanisms each include a telescopic rod arranged on the side of the detector body. The telescopic member drives the shaft rod to move forward, so that the clamping mechanism drives the circuit board body to enter the detector body for detection, and the rotating gear compresses the torsion spring. Under the action of the torsion spring rebound force, the regulating rod slides in the second arc groove, so as to minimize the excessive space occupied under the circuit board body when the circuit board body is flipped, and the other side of the circuit board body is flipped upward, saving manpower and improving efficiency, thereby facilitating the detection of the patch solder joint strength on both sides of the circuit board body.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board detection, in particular to a circuit board patch solder joint strength detection device. Background Art

[0002] PCB solder joint strength testing is a commonly used test method to evaluate the connection strength between SMD components (such as resistors, capacitors, integrated circuits, etc.) and PCB solder joints. This test helps ensure welding quality and avoid potential welding failures.

[0003] There are two common circuit board patch solder joint strength tests: 1. Mechanical test: evaluate the strength of the solder joint by applying mechanical force. A common mechanical test method is the pull-shear test. During the test, professional equipment is used to apply tension or shear force to the patch components on the solder joints. The strength of the solder joints is evaluated by measuring the applied force and displacement in real time. If the solder joint strength is insufficient, the solder joint may break or loosen; 2. Thermal shock test: simulate the stress of the circuit board when the temperature environment changes through rapid temperature changes to evaluate the reliability of the solder joint. During the test, the circuit board is placed in a specific temperature control device, and the temperature is quickly increased or decreased. Then a visual inspection or professional equipment measurement is performed to observe whether the solder joint has cracks, ruptures or looseness, etc.; 3. Appearance test: by placing the circuit board in an automatic optical inspection instrument, the machine automatically scans the circuit board through a camera, collects images, compares the detected solder joints with the qualified parameters in the database, and marks the solder joint defects through a display or automatic identification for repair to avoid welding defects that affect the strength of the solder joints. When performing patch solder joint strength testing, professional equipment and tools are required, and relevant test standards and procedures must be followed.

[0004] At present, the existing technology usually requires manual placement of the circuit board on the movable plate of the optical tester, which then sends the circuit board into the tester. After testing one side of the circuit board, the movable plate is moved out of the tester, and the circuit board is then manually flipped over to test the other side of the circuit board. This is labor-intensive and affects efficiency, making it inconvenient to test the strength of solder joints. Therefore, it does not meet existing needs. We have proposed a circuit board patch solder joint strength testing device. Summary of the invention

[0005] The present invention provides a circuit board patch solder joint strength detection device, which has the beneficial effects of saving manpower and improving efficiency, thereby facilitating the detection of solder joint strength. It solves the problem mentioned in the above background technology that the prior art usually requires manual placement of the circuit board on a movable plate of an optical detector, the circuit board is sent into the detector by the movable plate, and after detecting one side of the circuit board, the movable plate is moved out of the detector, and the circuit board is manually turned over by manual labor to detect the other side of the circuit board, which consumes manpower and affects efficiency, thereby making it inconvenient to detect the solder joint strength.

[0006] The present invention provides the following technical solution: a circuit board patch solder joint strength detection device, comprising a clamping mechanism, wherein the number of the clamping mechanisms is set to two, and the two clamping mechanisms are symmetrically arranged on both sides of the detector body, and the clamping mechanisms each include a telescopic rod arranged on the side of the detector body, a lower clamp installed at the end of the telescopic rod, a bolt threadedly connected to the end of the telescopic rod, and an upper clamp rotatably installed at the end of the bolt, and both sides of the circuit board body are arranged between the lower clamp and the upper clamp, and the upper clamp is pressed against the upper side of the circuit board body.

[0007] As an optional solution for a circuit board patch solder joint strength detection device described in the present invention, wherein: a first shaft rod and a telescopic member are provided on the side of the detector body, the telescopic end of the telescopic member is connected to one end of the first shaft rod, a gear is rotatably sleeved on the middle part of the first shaft rod, a rack meshing with the gear is provided on the outside of the detector body, a third rotating plate is rotatably installed on the end of the first shaft rod, the torsion spring is provided between the gear and the third rotating plate, and the two ends of the torsion spring are respectively connected to the gear and the third rotating plate, a first rotating plate is provided on the side of the detector body, a second shaft rod is slidably inserted on the side of the detector body, one end of the second shaft rod is connected to the first rotating plate, and the other end of the second shaft rod is connected to the third rotating plate.

[0008] As an optional solution for the circuit board patch solder joint strength detection equipment described in the present invention, wherein: a mounting block is slidably inserted into the side of the detector body, a second rotating plate is arranged on the outer side of the mounting block, the second rotating plate is rotatably arranged on the side of the mounting block through a round rod and a bearing, sliding sheets are arranged on the outer sides of the first rotating plate and the second rotating plate, sliders are installed on the outer sides of the sliding sheets, the sliders are arranged as wedge-shaped blocks, and the two sliders are respectively slidably inserted in the sides of the first rotating plate and the second rotating plate, springs are installed on the outer sides of the sliders, the two ends of one spring are respectively connected to one slider and the first rotating plate, the two ends of the other spring are respectively connected to the other slider and the second rotating plate, and the two clamping mechanisms are respectively connected to the two sliding sheets.

[0009] As an optional solution of a circuit board patch solder joint strength detection device described in the present invention, wherein: the end of the second shaft rod is provided with a limiting component for controlling the rotation of the first rotating plate.

[0010] As an optional solution for a circuit board patch solder joint strength detection device described in the present invention, wherein: the limit assembly includes a fixing ring fixedly sleeved on the end of the second shaft rod, a limit ring connected to the fixing ring through a round rod, a limit pin slidably inserted in the limit ring, a limit plate installed on the inner ring of the limit ring, a limit hole opened on the side of the first rotating plate, and a limit groove opened on the side of the detector body, the limit plate is slidably inserted on the side of the limit pin, one end of the limit pin is slidably inserted in the limit hole, the other end of the limit pin is connected to a round plate, the end of the limit pin is slidably inserted in the limit groove slidably matched with the limit pin, and the depth of the middle part of the limit groove is less than the depth at both ends.

[0011] As an optional solution for a circuit board patch solder joint strength detection device described in the present invention, wherein: a straight groove, a first arc groove and a second arc groove are opened on the side of the detector body, the first arc groove and the second arc groove are respectively arranged at the two ends of the straight groove, and the first arc groove and the second arc groove are respectively connected to the straight groove, the lowest point of the first arc groove is higher than the lowest point of the arc with the midpoint of the first arc groove as the center, and the second arc groove is the same as the first arc groove.

[0012] As an optional solution for a circuit board patch solder point strength detection device described in the present invention, wherein: the junctions between the two ends of the first arc groove and the straight groove are respectively set as the first interface and the second interface, and the junctions between the two ends of the second arc groove and the straight groove are respectively set as the third interface and the fourth interface.

[0013] As an optional solution for a circuit board patch solder joint strength detection device described in the present invention, the straight groove, the first arc groove and the second arc groove are symmetrically arranged on both sides of the detector body, one end of the regulating rod is rotatably inserted into one end of the sliding plate, and the other end of the regulating rod is slidably inserted into the straight groove.

[0014] As an optional solution for the circuit board patch solder joint strength detection device described in the present invention, after both sides of the circuit board body are detected, the clamping mechanism drives the circuit board body to continue to move backward, and while moving backward, the torsion spring is compressed in the opposite direction, and then the rebound force of the torsion spring cooperates with the control rod to make the clamping mechanism drive the circuit board body to flip 180 degrees in the opposite direction, thereby resetting the device and facilitating the continued use of the device.

[0015] The present invention has the following beneficial effects:

[0016] 1. The circuit board solder joint strength testing device, the telescopic member drives the shaft rod to move forward, so that the clamping mechanism drives the circuit board body into the tester body for testing, and the rotating gear compresses the torsion spring. When the regulating rod moves to the third interface, the limit assembly releases the limiting effect on the first rotating plate, so that the clamping mechanism drives the first rotating plate and the sliding piece to rotate under the action of the torsion spring rebound force. At the same time, the regulating rod slides into the second arc groove through the third interface, and before the regulating rod slides to the lowest point of the second arc groove, the sliding piece drives the circuit board body to flip and move upward at the same time. Before the regulating rod slides from the lowest point of the second arc groove to the fourth interface, the sliding piece continues to drive the circuit board body to flip and move downward to reset, thereby minimizing the excessive space occupied below the circuit board body when the circuit board body is flipped, and flipping the other side of the circuit board body upward saves manpower and improves efficiency, thereby facilitating the testing of the strength of the patch solder joints on both sides of the circuit board body.

[0017] 2. The circuit board patch solder joint strength testing equipment, by tightening the bolt, the bolt drives the upper clamp to move up and down, so that the upper clamp is close to or away from the lower clamp, which is convenient for disassembly and assembly of the circuit board body and the detector body, and through the setting of the telescopic rod, it is convenient to clamp circuit board bodies of different sizes, thereby further improving the use effect of the equipment.

[0018] 3. The circuit board patch solder joint strength detection equipment has two ends of the limit slot far away from the first rotating plate, and the middle part of the limit slot is close to the first rotating plate. Through the coordinated use of the limit pin and the limit slot, when one end of the limit pin slides in the limit slot, the other end of the limit pin slides back and forth in the limit hole without separating from the limit hole, thereby always limiting the rotation of the first rotating plate. When the limit pin is located at both ends of the limit slot, the limit pin is completely disengaged from the limit hole, thereby releasing the restriction on the first rotating plate and allowing the first rotating plate to rotate, thereby facilitating the control of whether the limit assembly restricts the rotation of the first rotating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic exploded view of a local three-dimensional structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the explosion of the second rotating plate of the present invention.

[0022] Figure 4 It is an exploded schematic diagram of the limiting component of the present invention.

[0023] Figure 5 It is a schematic diagram of the cutaway structure of the limiting groove of the present invention.

[0024] Figure 6 It is a schematic diagram of the enlarged structure of point A of the present invention.

[0025] Figure 7 It is a schematic diagram of the partial cutaway structure of the present invention.

[0026] Figure 8 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0027] Fig. 9 It is a schematic diagram of the front structure of the circuit board body of the present invention.

[0028] Fig.10 It is a schematic diagram of the flip structure of the circuit board body of the present invention.

[0029] Fig.11 It is a schematic diagram of the reverse structure of the circuit board body of the present invention.

[0030] In the figure: 100, circuit board body; 110, clamping mechanism; 111, telescopic rod; 112, lower clamping plate; 113, bolt; 114, upper clamping plate; 120, detector body; 130, detection lens; 131, first shaft rod; 132, telescopic member; 133, gear; 134, rack; 135, first rotating plate; 140, torsion spring; 141, mounting block; 142, second rotating plate; 143, slide plate; 144, slider; 145. Spring; 146. Third rotating plate; 147. Second shaft rod; 150. Limiting assembly; 151. Fixing ring; 152. Limiting ring; 153. Limiting pin; 154. Limiting hole; 155. Limiting groove; 156. Limiting plate; 160. Straight groove; 161. First arc groove; 162. Second arc groove; 163. First interface; 164. Second interface; 165. Third interface; 166. Fourth interface; 170. Control rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1. This embodiment aims to solve the problem that the prior art usually requires manual placement of a circuit board on a movable plate of an optical tester, and the movable plate is used to feed the circuit board into the tester. After testing one side of the circuit board, the movable plate is removed from the tester, and the circuit board is manually turned over by a human to test the other side of the circuit board, which is labor-intensive and affects efficiency, making it inconvenient to test the strength of solder joints. Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 A circuit board patch solder joint strength detection device includes a clamping mechanism 110. The clamping mechanism 110 drives the circuit board body 100 to continue to move backward, and while moving backward, the torsion spring 140 is reversely compressed, and then the rebound force of the torsion spring 140 cooperates with the regulating rod 170 to make the clamping mechanism 110 drive the circuit board body 100 to flip 180 degrees in the opposite direction, thereby resetting the device to facilitate the continued use of the device.

[0033] A first shaft 131 and a telescopic member 132 are provided on the side of the detector body 120. The telescopic member 132 is set as a hydraulic rod. The telescopic end of the telescopic member 132 is fixedly connected to one end of the first shaft 131. A gear 133 is rotatably sleeved through a bearing in the middle of the first shaft 131. A rack 134 meshing with the gear 133 is provided on the outer side of the detector body 120, and the rack 134 meshes with the gear 133, so that the gear 133 rotates between 180 degrees and 230 degrees. A third rotating plate 146 is rotatably installed at the end of the first shaft 131. The torsion spring 140 is set between the gear 133 and the third rotating plate 146. The two ends of the torsion spring 140 are respectively fixedly connected to the gear 133 and the third rotating plate 146. The detector body 12 0A first rotating plate 135 is provided on the side, a second shaft rod 147 is slidably inserted on the side of the detector body 120, and a groove body for the second shaft rod 147 to slide is opened on the side of the detector body 120, one end of the second shaft rod 147 is fixedly connected to the first rotating plate 135, and the other end of the second shaft rod 147 is fixedly connected to the third rotating plate 146, a mounting block 141 is slidably inserted on the side of the detector body 120, and the mounting block 141 is set as a "T"-shaped block to prevent the mounting block 141 from falling off the detector body 120, and a second rotating plate 142 is arranged on the outside of the mounting block 141. The second rotating plate 142 has the same structure as the first rotating plate 135, and the second rotating plate 142 is rotatably set on the side of the mounting block 141 through a round rod and a bearing.

[0034] Slide sheets 143 are provided on the outer sides of the first rotating plate 135 and the second rotating plate 142, and sliders 144 are fixedly installed on the outer sides of the slide sheets 143. The sliders 144 are configured as wedge-shaped blocks to prevent the slide sheets 143 from falling off the first rotating plate 135 and the second rotating plate 142, and the two sliders 144 are slidably inserted on the sides of the first rotating plate 135 and the second rotating plate 142 respectively, and springs 145 are installed on the outer sides of the sliders 144, and the two ends of one spring 145 are fixedly connected to one slider 144 and the first rotating plate 135 respectively, and the two ends of the other spring 145 are fixedly connected to the other slider 144 and the second rotating plate 142 respectively, and the two clamping mechanisms 110 are connected to the two slide sheets 143 respectively.

[0035] A limit assembly 150 for controlling the rotation of the first rotating plate 135 is provided at the end of the second shaft rod 147, and a straight groove 160, a first arc groove 161 and a second arc groove 162 are provided on the side of the detector body 120. The first arc groove 161 and the second arc groove 162 are respectively arranged at the two ends of the straight groove 160, and the first arc groove 161 and the second arc groove 162 are respectively connected to the straight groove 160, the lowest point of the first arc groove 161 is higher than the lowest point of the arc with the midpoint of the first arc groove 161 as the center, and the second arc groove 162 is the same as the first arc groove 161.

[0036] The junctions of the two ends of the first arc groove 161 and the straight groove 160 are respectively set as the first interface 163 and the second interface 164, and the junctions of the two ends of the second arc groove 162 and the straight groove 160 are respectively set as the third interface 165 and the fourth interface 166. The straight groove 160, the first arc groove 161 and the second arc groove 162 are symmetrically opened on both sides of the detector body 120, one end of the regulating rod 170 is rotatably inserted into one end of the sliding sheet 143, and the other end of the regulating rod 170 is slidably inserted into the straight groove 160.

[0037] In this embodiment: the telescopic member 132 drives the first shaft rod 131 to move forward, so that the clamping mechanism 110 drives the circuit board body 100 to enter the detector body 120 for detection, and the rotating gear 133 compresses the torsion spring 140. When the regulating rod 170 moves to the third interface 165, the limiting assembly 150 releases the limiting effect on the first rotating plate 135, so that the clamping mechanism 110 drives the first rotating plate 135 and the sliding piece 143 to rotate under the action of the rebound force of the torsion spring 140. At the same time, the regulating rod 170 slides into the second arc groove 162 through the third interface 165. Before the regulating rod 170 slides to the lowest point of the second arc groove 162, the sliding piece 143 drives the circuit board body 100 to flip and move upward at the same time. Before the regulating rod 170 slides from the lowest point of the second arc groove 162 to the fourth interface 166, the sliding piece 143 continues to drive the circuit board body 100 to rotate. The body 100 is flipped and moved down to reset at the same time. In order to facilitate the detection of the circuit board body 100 by the detection lens 130, the existing circuit board body 100 detection equipment often needs to reserve a large space above the circuit board body 100. If the midpoint of the circuit board body 100 is fixed and flipped, in order to adapt to the flipping of circuit board bodies 100 of different sizes, it is necessary to reserve a large flipping space below the circuit board body 100, which will virtually increase the thickness of the detector body 120. When the circuit board body 100 is flipped, the circuit board body 100 is first moved up and then lowered to reset, thereby minimizing the excessive occupation of the space below the circuit board body 100 when it is flipped. In this way, the overall space occupation of the detector body 120 can be effectively reduced, and the other side of the circuit board body 100 is flipped upward for detection.

[0038] After the inspection of both sides of the circuit board body 100 is completed, the clamping mechanism 110 drives the circuit board body 100 to move backward, while the limit assembly 150 again limits the rotation of the first rotating plate 135, and compresses the torsion spring 140 in the opposite direction while moving backward. When the regulating rod 170 moves backward to the second interface 164, the limit assembly 150 releases the limit again, and then the regulating rod 170 slides in the first arc groove 161 through the resilience of the torsion spring 140, so that the clamping mechanism 110 drives the circuit board body 100 to flip 180 degrees in the opposite direction, thereby resetting the device and facilitating the continued use of the device. The problem that the prior art usually requires manual placement of the circuit board on the movable plate of the optical detector, the circuit board is sent into the detector by the movable plate, and after inspecting one side of the circuit board, the movable plate is moved out of the detector, and the circuit board is manually flipped over to inspect the other side of the circuit board is solved as much as possible. This consumes manpower and affects efficiency, and is not convenient for inspecting the strength of the solder joints.

[0039] Embodiment 2: This embodiment is intended to solve the problem that it is inconvenient to disassemble and assemble the circuit board body 100 and the detector body 120, which easily affects the use effect of the device. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 The number of the clamping mechanisms 110 is set to two, and the two clamping mechanisms 110 are symmetrically arranged on both sides of the detector body 120. The clamping mechanisms 110 include a telescopic rod 111 arranged on the side of the detector body 120, a lower clamping piece 112 installed at the end of the telescopic rod 111, a bolt 113 threadedly connected to the end of the telescopic rod 111, and an upper clamping piece 114 rotatably installed at the end of the bolt 113. A circular piece is arranged at the end of the bolt 113, and a groove body used in conjunction with the circular piece is opened on the inner side of the upper clamping piece 114, so that the circular piece rotates in the groove body. Both sides of the circuit board body 100 are placed between the lower clamping piece 112 and the upper clamping piece 114, and the upper clamping piece 114 is pressed tightly against the upper side of the circuit board body 100.

[0040] In this embodiment, by tightening the bolt 113, the bolt 113 drives the upper clamp 114 to move up and down, so that the upper clamp 114 is close to or away from the lower clamp 112, which is convenient for disassembly and assembly of the circuit board body 100 and the detector body 120. Moreover, through the setting of the telescopic rod 111, it is convenient to clamp circuit board bodies 100 of different sizes, thereby further improving the use effect of the device.

[0041] Embodiment 3: This embodiment is intended to facilitate solving the problem of inconvenience in controlling whether the limit assembly 150 limits the rotation of the first rotating plate 135. This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 The limiting assembly 150 includes a fixing ring 151 fixedly sleeved on the end of the second shaft 147, a limiting ring 152 fixedly connected to the fixing ring 151 through a round rod, a limiting pin 153 slidably inserted in the limiting ring 152, a limiting piece 156 fixedly installed on the inner ring of the limiting ring 152, two limiting holes 154 symmetrically arranged on the side of the first rotating plate 135, and a limiting groove 155 arranged on the side of the detector body 120, the limiting piece 156 is slidably inserted on the side of the limiting pin 153, one end of the limiting pin 153 is slidably inserted in one of the limiting holes 154, and the other end of the limiting pin 153 is fixedly connected with a round piece, the end of the limiting pin 153 is slidably inserted in the limiting groove 155 slidably matched with the limiting pin 153, the space in the limiting groove 155 is sufficient for the end of the limiting pin 153 to slide therein, and the depth of the middle part of the limiting groove 155 is less than the depth of the two ends, so that the limiting groove 155 is arc-shaped.

[0042] In this embodiment: the two ends of the limit groove 155 are far away from the first rotating plate 135, and the middle part of the limit groove 155 is close to the first rotating plate 135. Through the coordinated use of the limit pin 153 and the limit groove 155, when one end of the limit pin 153 slides in the limit groove 155, the other end of the limit pin 153 slides back and forth in the limit hole 154 and does not separate from the limit hole 154, always restricting the rotation of the first rotating plate 135; when the limit pin 153 is located at the two ends of the limit groove 155, the limit pin 153 is completely disengaged from the limit hole 154, releasing the restriction on the first rotating plate 135, so that the first rotating plate 135 can rotate, thereby facilitating the control of whether the limit assembly 150 restricts the rotation of the first rotating plate 135.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A circuit board patch solder joint strength testing device, characterized in that: The invention comprises a clamping mechanism, wherein the number of the clamping mechanisms (110) is set to two, and the two clamping mechanisms (110) are symmetrically arranged on both sides of the detector body (120), and the clamping mechanisms (110) each comprise a telescopic rod (111) arranged on the side of the detector body (120), a lower clamping piece (112) installed at the end of the telescopic rod (111), a bolt (113) threadedly connected to the end of the telescopic rod (111), and an upper clamping piece (114) rotatably installed at the end of the bolt (113), and both sides of the circuit board body (100) are arranged between the lower clamping piece (112) and the upper clamping piece (114), and the upper clamping piece (114) is pressed against the upper side of the circuit board body (100); A first shaft (131) and a telescopic member (132) are provided on the side of the detector body (120); the telescopic end of the telescopic member (132) is connected to one end of the first shaft (131); a gear (133) is rotatably sleeved on the middle of the first shaft (131); a rack (134) meshing with the gear (133) is provided on the outside of the detector body (120); a third rotating plate (146) is rotatably mounted on the end of the first shaft (131); and the torsion spring (140) is provided on the Between the gear (133) and the third rotating plate (146), the two ends of the torsion spring (140) are respectively connected to the gear (133) and the third rotating plate (146), a first rotating plate (135) is provided on the side of the detector body (120), a second shaft rod (147) is slidably inserted on the side of the detector body (120), one end of the second shaft rod (147) is connected to the first rotating plate (135), and the other end of the second shaft rod (147) is connected to the third rotating plate (146); A mounting block (141) is slidably inserted into the side of the detector body (120), a second rotating plate (142) is arranged outside the mounting block (141), the second rotating plate (142) is rotatably arranged on the side of the mounting block (141) through a round rod and a bearing, a sliding sheet (143) is arranged outside the first rotating plate (135) and the second rotating plate (142), a sliding block (144) is installed outside the sliding sheet (143), the sliding block (144) is arranged as a wedge block, and the two sliding blocks (14 4) are respectively slidably inserted on the side of the first rotating plate (135) and the second rotating plate (142), and springs (145) are installed on the outer sides of the sliders (144), and the two ends of one spring (145) are respectively connected to one slider (144) and the first rotating plate (135), and the two ends of another spring (145) are respectively connected to another slider (144) and the second rotating plate (142), and the two clamping mechanisms (110) are respectively connected to the two slides (143); A limiting assembly (150) for controlling the rotation of the first rotating plate (135) is disposed at the end of the second shaft (147); The limiting assembly (150) comprises a fixing ring (151) fixedly sleeved on the end of the second shaft (147), a limiting ring (152) connected to the fixing ring (151) via a round rod, a limiting pin (153) slidably inserted in the limiting ring (152), a limiting plate (156) installed on the inner ring of the limiting ring (152), a limiting hole (154) provided on the side of the first rotating plate (135), and a limiting hole (154) provided on the detector body (135). 120), the limiting plate (156) is slidably inserted into the side of the limiting pin (153), one end of the limiting pin (153) is slidably inserted into the limiting hole (154), the other end of the limiting pin (153) is connected with a round plate, the end of the limiting pin (153) is slidably inserted into the limiting groove (155) slidably matched with the limiting pin (153), and the depth of the middle part of the limiting groove (155) is less than the depth of the two ends; A straight groove (160), a first arc groove (161) and a second arc groove (162) are provided on the side of the detector body (120); the first arc groove (161) and the second arc groove (162) are respectively arranged at two ends of the straight groove (160), and the first arc groove (161) and the second arc groove (162) are respectively connected to the straight groove (160); the lowest point of the first arc groove (161) is higher than the lowest point of the arc with the midpoint of the first arc groove (161) as the center, and the second arc groove (162) is the same as the first arc groove (161); The intersections between the two ends of the first arc groove (161) and the straight groove (160) are respectively set as a first interface (163) and a second interface (164); the intersections between the two ends of the second arc groove (162) and the straight groove (160) are respectively set as a third interface (165) and a fourth interface (166); The straight groove (160), the first arc groove (161) and the second arc groove (162) are symmetrically arranged on both sides of the detector body (120); one end of the regulating rod (170) is rotatably inserted into one end of the sliding sheet (143); and the other end of the regulating rod (170) is slidably inserted into the straight groove (160); After both sides of the circuit board body (100) are inspected, the clamping mechanism (110) drives the circuit board body (100) to continue to move backward, and while moving backward, the torsion spring (140) is compressed in the opposite direction, and then the rebound force of the torsion spring (140) cooperates with the regulating rod (170) to enable the clamping mechanism (110) to drive the circuit board body (100) to flip 180 degrees in the opposite direction, thereby resetting the device and facilitating the continued use of the device.

Images