Automatic circuit board detection tool and use method thereof

Abstract

An automatic circuit board detection tool disclosed by the present invention comprises a placement supporting seat, the upper end of the placement supporting seat is symmetrically and fixedly connected with two vertical mounting plates, the upper ends of the two vertical mounting plates are fixedly connected with connecting plates, and the upper ends of the two connecting plates are jointly and fixedly connected with a detection box. A detection groove is formed in the lower end of the detection box; and the detection mechanism comprises an adjusting plate arranged in the detection groove, two visual detection heads are symmetrically arranged on the adjusting plate in a penetrating manner, two first electric contacts are symmetrically arranged at the inner top of the detection groove, and two second electric contacts are oppositely mounted at the upper end of each visual detection head. The invention discloses an automatic circuit board detection tool and a use method thereof. During specific use, the detection accuracy can be ensured through an intermittent motion structure, and in addition, the service life of the visual detection heads can be effectively prolonged by matching with active air cooling heat dissipation and alternate use of the two visual detection heads.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of circuit board detection, and in particular to an automatic circuit board detection tool and a use method thereof. BACKGROUND

[0002] In the current thriving electronic manufacturing industry, the quality of circuit boards, as the core components of electronic devices, directly affects the performance and stability of products. Therefore, it is crucial to efficiently and accurately detect circuit boards. Currently, the common circuit board detection tool on the market mostly adopts a continuous motion structure, and the circuit board continuously moves during the detection process. Although this detection method can improve the detection efficiency to a certain extent, due to the continuity of the motion process, it is difficult for the detection head to accurately focus and stably detect the circuit board at a fixed position, which easily leads to deviation in the detection data, cannot guarantee the accuracy of the detection, and thus affects the quality assessment and subsequent use of the circuit board. At the same time, during the long detection process, the electronic components and detection heads inside the detection tool will generate a large amount of heat due to continuous work. If not cooled in time, the high-temperature environment will accelerate the aging of the electronic components, reduce their performance and stability, and also have a negative impact on the imaging quality of the detection head, shorten its service life, increase the cost of equipment maintenance and replacement, and in addition, the existing circuit board detection tool mostly only has a single visual detection head. When facing large-scale and high-intensity detection tasks, the single detection head is easily fatigued and causes the detection precision to decrease, so how to solve the above problems needs to be considered. SUMMARY

[0003] The purpose of the present application is to solve the problems in the prior art and provide an automatic circuit board detection tool. When used, the tool can guarantee the accuracy of the detection by using an intermittent motion structure, and can effectively improve the service life of the visual detection head by using active air cooling and the alternating use of two visual detection heads.

[0004] To achieve the above purpose, the present application adopts the following technical solutions: An automatic circuit board detection tool, comprising a placement support seat, the upper end of the placement support seat is symmetrically fixedly connected with two vertical installation plates, the upper end of the two vertical installation plates is fixedly connected with a connecting plate, the upper end of the two connecting plates is fixedly connected with a detection box, and the lower end of the detection box is provided with a detection groove; a detection mechanism, the detection mechanism comprises an adjusting plate arranged in the detection groove, two visual detection heads are symmetrically arranged on the adjusting plate, the inner top of the detection groove is symmetrically provided with two first electric contacts, the upper end of each visual detection head is provided with two second electric contacts, and the two second electric contacts located on the rear side are matched with the first electric contacts; an adjusting mechanism, the adjusting mechanism comprises an adjusting groove formed in the front side of the detection box, a magnetic sliding plate slidably arranged in the adjusting groove, a rack fixedly connected to the rear side of the magnetic sliding plate, a rotating shaft fixedly connected to the upper end of the adjusting plate, the upper end of the rotating shaft extending into the adjusting groove and being rotatably connected to the inner bottom of the adjusting groove, a second transmission gear mounted on the upper end of the rotating shaft, and the rotating shaft and the second transmission gear being rotatably connected through a one-way bearing; and a heat dissipation mechanism for improving the service life of the visual detection head.

[0005] Preferably, two conveying rollers are rotatably connected between the two vertical installation plates, and a conveying belt is wound around the two conveying rollers.

[0006] Preferably, an electromagnet is fixedly connected to the slot of the adjusting groove, the rear side of the electromagnet is elastically connected to the magnetic sliding plate through a second spring, and the adjacent surfaces of the electromagnet and the magnetic sliding plate are attracted to each other after the electromagnet is electrified.

[0007] Preferably, a double-shaft motor is installed on the front side of the vertical installation plate located on the front side, an incomplete gear is fixedly connected to the rear end output shaft of the double-shaft motor, the front end of the conveying roller located on the left side extends to the outside and is fixedly connected with a first transmission gear, and the incomplete gear is matched with the first transmission gear.

[0008] Preferably, the heat dissipation mechanism comprises a reciprocating piston cylinder installed on the front side of the front side vertical installation plate, a first piston plate slidably arranged in the reciprocating piston cylinder, a rotating disc fixedly connected to the front end output shaft of the double-shaft motor, a connecting shaft rotatably connected to the eccentric position on the front side of the rotating disc, and the other end of the connecting shaft being rotatably connected to the left side of the first piston plate.

[0009] Preferably, the right side of the reciprocating piston cylinder is in space communication with a first one-way pipe and a second one-way pipe, a plurality of air inlets are formed in the side walls of the two visual detection heads, a connecting pipe is fixedly connected to the upper end of each visual detection head, the lower end of each connecting pipe is in communication with the inside of the visual detection head, and the other end of the first one-way pipe extends above the rear connecting pipe and is matched therewith.

[0010] Preferably, the front side of the vertical installation plate is provided with a gas cylinder, the left side space of the gas cylinder is communicated with the outside through a through port, the front side space of the right side of the gas cylinder is communicated with the outside through an exhaust port, a second piston plate slidably arranged in the left side of the gas cylinder is provided in the gas cylinder, the left side of the second piston plate is elastically connected with the left side wall of the gas cylinder through a first spring, and the other end of the second one-way pipe extends into the gas cylinder.

[0011] Preferably, one-way valves are arranged in the first one-way pipe and the second one-way pipe, the flow direction of the one-way valve in the first one-way pipe is that the rear side connecting pipe unidirectionally enters the right side space of the reciprocating piston cylinder, and the flow direction of the one-way valve in the second one-way pipe is that the reciprocating piston cylinder unidirectionally enters the right side space of the gas cylinder.

[0012] Preferably, a normally closed electromagnetic valve is arranged in the exhaust port, an installation column is arranged on the left side wall of the gas cylinder, a touch delay switch is arranged on the right side of the installation column, and the touch delay switch is electrically connected with the normally closed electromagnetic valve and the electromagnet, so that the normally closed electromagnetic valve and the electromagnet are powered on for 10 seconds and then powered off after the touch delay switch is triggered.

[0013] The application further discloses a use method of the automatic circuit board detection tool. In the first step, the double-shaft motor is started, the rear output shaft drives the incomplete gear to rotate, the left conveying roller is driven to rotate through meshing with the first transmission gear, the conveying belt moves, the initial rear visual detection head is connected to a loop, the circuit board is placed on the conveying belt, and the circuit board is conveyed to the detection groove to start detection. In the second step, the front end of the double-shaft motor drives the rotating disc to rotate, the first piston plate reciprocates through the connecting shaft, air enters the reciprocating piston cylinder through the first one-way pipe, and then enters the gas cylinder through the second one-way pipe, so that the rear visual detection head is actively cooled. In the third step, the gas cylinder continuously stores air, the pressure increases, the second piston plate moves left to trigger the touch delay switch, the normally closed electromagnetic valve and the electromagnet are powered on for 10 seconds, high-pressure air is discharged from the exhaust port, and then the normally closed electromagnetic valve and the electromagnet are powered off to store air again. In the fourth step, the electromagnet is powered on, the magnetic sliding plate moves forward, the rack drives the second transmission gear and the rotating shaft to rotate by 180 degrees, the adjusting plate rotates to make the two visual detection heads alternate, and the magnetic sliding plate is reset after power-off for next operation.

[0014] Compared with the prior art, the application has the following beneficial effects: 1. The conveying roller, the cooling device and the switching device are simultaneously driven by the double-shaft motor, the circuit board conveying and detection, the visual detection head cooling and the alternating use are synchronously performed, the links are closely matched, the waiting time is reduced, and the efficiency and the stability of the whole detection process are effectively improved.

[0015] 2. The design of one-way gas flow is used to generate negative pressure inside the rear visual detection head and supplement gas from the detection groove, forming the active gas flow heat dissipation effect. This heat dissipation method can timely remove heat, avoid detection head failure due to overheating, ensure long-term stable operation, and prolong the service life.

[0016] 3. The normally closed electromagnetic valve and electromagnet are controlled by the touch delay switch to realize the timing exhaust of the air cylinder and the timing switching of the visual detection head. The timing trigger mechanism is precise and reliable, without frequent manual intervention, improving the degree of automation of the equipment and ensuring the detection work to be carried out in an orderly manner according to the predetermined rhythm.

[0017] 4. The switching mechanism composed of electromagnets, magnetic sliding plates and other components realizes the alternate use of two visual detection heads. The continuous long-time work of a single detection head is avoided, effectively reducing its fatigue degree, reducing the risk of performance decline and damage caused by excessive use, and improving the detection quality and reliability.

[0018] In summary, the present application realizes the synchronization and cooperation of circuit board conveying and detection, visual detection head cooling and alternate use by double-shaft motor, reduces the waiting time, improves the efficiency and stability of the detection process; uses one-way gas flow to form active cooling, avoids detection head overheating failure, prolongs the service life; uses touch delay switch to achieve timing exhaust and switching, improves the degree of automation, and ensures orderly detection; with the help of the switching mechanism, two visual detection heads are alternately used, the fatigue loss is reduced, and the detection quality and reliability are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A structure diagram of an automatic circuit board detection tool is provided for the present application; Figure 2 A front and rear direction sectional view of the reciprocating piston cylinder part; Figure 1 Figure 3 A front and rear direction sectional view of the incomplete gear part; Figure 4 A front and rear direction sectional view of the adjustment groove part; Figure 1 An enlarged view of A of the reciprocating piston cylinder part; Figure 5 Figure 4 A left side view of the reciprocating piston cylinder part; Figure 6 An enlarged view of B of the reciprocating piston cylinder part. Figure 4 Figure 7 An enlarged view of B of the reciprocating piston cylinder part. Figure 6

[0020] ​​​​In the figure: 1 placing support seat, 2 vertical mounting plate, 3 conveying roller, 4 conveying belt, 5 connecting plate, 6 detection box, 7 double-shaft motor, 8 first transmission gear, 9 reciprocating piston cylinder, 10 first one-way tube, 11 second one-way tube, 12 gas storage cylinder, 13 exhaust port, 14 through port, 15 rotating disc, 16 connecting shaft, 17 first piston plate, 18 second piston plate, 19 first spring, 20 mounting column, 21 touch delay switch, 22 incomplete gear, 23 detection groove, 24 adjusting groove, 25 rack, 26 magnetic sliding plate, 27 second spring, 28 electromagnet, 29 second transmission gear, 30 rotating shaft, 31 adjusting plate, 32 visual detection head, 33 first electric contact, 34 second electric contact, 35 connecting pipe, 36 air inlet. DETAILED DESCRIPTION

[0021] In the description of the present application, it should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The techniques, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0022] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not intended to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second" and the like are generally a class, not limited to the number of objects, for example, the first object can be one or more. In addition, the specification and claims "and / or" indicate at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in a "or" relationship.

[0023] It should be noted that in the description of the present application, the terms of orientation such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component itself.

[0024] Referring to Figures 1-7 An automatic circuit board detection tool, including a placement support seat 1, the upper end of the placement support seat 1 is symmetrically and fixedly connected with two vertical installation plates 2, the upper end of the two vertical installation plates 2 is fixedly connected with two connecting plates 5, the upper end of the two connecting plates 5 is fixedly connected with a detection box 6, the lower end of the detection box 6 is provided with a detection groove 23, two conveying rollers 3 are rotatably connected in front of the two vertical installation plates 2, a conveying belt 4 is wound around the two conveying rollers 3, a double-shaft motor 7 is installed on the front side of the vertical installation plate 2 located on the front side, the rear output shaft of the double-shaft motor 7 is fixedly connected with an incomplete gear 22, the front end of the conveying roller 3 located on the left side extends to the outside and is fixedly connected with a first transmission gear 8, the incomplete gear 22 cooperates with the first transmission gear 8; As an embodiment of the present application, further comprising a detection mechanism, the detection mechanism comprises an adjusting plate 31 arranged in the detection groove 23, two visual detection heads 32 are symmetrically and arranged on the adjusting plate 31, two first electric contacts 33 are symmetrically arranged on the inner top of the detection groove 23, two second electric contacts 34 are arranged on the upper end of each visual detection head 32, the two second electric contacts 34 located on the rear side cooperate with the first electric contacts 33, when the two corresponding second electric contacts 34 contact with the first electric contacts 33, the corresponding visual detection head 32 is connected into the detection loop for detection; As one embodiment of the present application, the adjusting mechanism further comprises an adjusting slot 24 opened on the front side of the detection box 6, a magnetic sliding plate 26 slidably arranged in the adjusting slot 24, a rack 25 fixedly connected to the rear side of the magnetic sliding plate 26, a rotating shaft 30 fixedly connected to the upper end of an adjusting plate 31, the upper end of the rotating shaft 30 extending into the adjusting slot 24 and being rotatably connected to the bottom of the adjusting slot 24, a second transmission gear 29 mounted on the upper end of the rotating shaft 30, the rotating shaft 30 being rotatably connected to the second transmission gear 29 through a one-way bearing, an electromagnet 28 fixedly connected to the slot of the adjusting slot 24, the rear side of the electromagnet 28 being elastically connected to the magnetic sliding plate 26 through a second spring 27, the adjacent surfaces of the electromagnet 28 and the magnetic sliding plate 26 being attracted to each other after the electromagnet 28 is powered on, and the magnetic sliding plate 26 and the rack 25 being capable of moving forward and backward once after the electromagnet 28 is powered on and off once, the rotating shaft 30 being capable of rotating half a circle in cooperation with the second transmission gear 29, and the two visual detection heads 32 being capable of being used alternately; As one embodiment of the present application, the heat dissipation mechanism is used to improve the service life of the visual detection heads 32, and comprises a reciprocating piston cylinder 9 mounted on the front side of the front vertical mounting plate 2, a first piston plate 17 slidably arranged in the reciprocating piston cylinder 9, a rotating disc 15 fixedly connected to the front end output shaft of the double-shaft motor 7, a connecting shaft 16 rotatably connected to the eccentric position of the front side of the rotating disc 15, the other end of the connecting shaft 16 being rotatably connected to the left side of the first piston plate 17, the right side space of the reciprocating piston cylinder 9 being in communication with a first one-way pipe 10 and a second one-way pipe 11, a plurality of air inlets 36 being opened on the side walls of the two visual detection heads 32, a connecting pipe 35 being fixedly connected to the upper end of each of the two visual detection heads 32, the lower end of each of the two connecting pipes 35 being in communication with the inside of the visual detection head 32, the other end of the first one-way pipe 10 extending above the rear connecting pipe 35 and cooperating therewith; As one embodiment of the present application, the front side of the vertical mounting plate 2 located on the front side is provided with a gas cylinder 12, the left side space of the gas cylinder 12 is in communication with the outside through a through port 14, the front side of the right side space of the gas cylinder 12 is in communication with the outside through an exhaust port 13, the gas cylinder 12 is provided with a second piston plate 18 slidably arranged therein, the left side of the second piston plate 18 is elastically connected to the left side wall of the gas cylinder 12 through a first spring 19, the other end of the second one-way pipe 11 extends into the inside of the gas cylinder 12, a one-way valve is mounted in each of the first one-way pipe 10 and the second one-way pipe 11, the flow direction of the one-way valve in the first one-way pipe 10 is that the rear connecting pipe 35 unidirectionally enters the right side space of the reciprocating piston cylinder 9, and the flow direction of the one-way valve in the second one-way pipe 11 is that the reciprocating piston cylinder 9 unidirectionally enters the right side space of the gas cylinder 12; As an embodiment of the present application, the exhaust port 13 is internally provided with a normally closed electromagnetic valve, the left side wall of the air cylinder 12 is provided with a mounting column 20, the right side of the mounting column 20 is provided with a touch delay switch 21, the touch delay switch 21 is electrically connected with the normally closed electromagnetic valve and the electromagnet 28, and after being triggered, the touch delay switch 21 can make the normally closed electromagnetic valve and the electromagnet 28 be powered on for 10 seconds and then be powered off.

[0025] In the present application, the double-shaft motor 7 is started, and the rear output shaft drives the incomplete gear 22 to rotate. The incomplete gear 22 cooperates with the first transmission gear 8, and when the toothed part of the incomplete gear 22 meshes with the first transmission gear 8, the first transmission gear 8 is driven to rotate, and in turn drives the left conveying roller 3 to rotate. Since the two conveying rollers 3 are jointly provided with the conveying belt 4, the conveying belt 4 moves accordingly. In the initial state, the two corresponding second electric contacts 34 on the rear side are in contact with the two first electric contacts 33, and the rear visual detection head 32 is connected to the detection circuit to detect the circuit board. When the circuit board placed on the conveying belt 4 is conveyed to the detection groove 23 below the detection box 6, the detection can be performed; When the double-shaft motor 7 is started, the front output shaft drives the rotating disc 15 to rotate. The rotating disc 15 is rotationally connected to the connecting shaft 16 at the eccentric position on the front side, and the other end of the connecting shaft 16 is rotationally connected to the left side of the first piston plate 17 which is slidably arranged in the reciprocating piston cylinder 9. When the rotating disc 15 rotates, the first piston plate 17 is driven to reciprocate in the reciprocating piston cylinder 9 through the connecting shaft 16. When the first piston plate 17 moves to the left, a negative pressure is formed in the space on the right side of the reciprocating piston cylinder 9, and the ambient air enters the space on the right side of the reciprocating piston cylinder 9 through the first one-way pipe 10. The flow direction of the one-way valve in the first one-way pipe 10 is from the rear connecting pipe 35 to the space on the right side of the reciprocating piston cylinder 9. When the first piston plate 17 moves to the right, the air in the space on the right side of the reciprocating piston cylinder 9 is compressed and enters the space on the right side of the air cylinder 12 through the second one-way pipe 11. The flow direction of the one-way valve in the second one-way pipe 11 is from the reciprocating piston cylinder 9 to the space on the right side of the air cylinder 12. This one-way gas flow can generate a negative pressure in the rear visual detection head 32 and replenish the gas in the detection groove 23, achieving the effect of active gas flow heat dissipation and ensuring the service life. In addition, the one-way gas flow can continuously deliver air to the space on the right side of the air cylinder 12, and the increased pressure in the space on the right side of the air cylinder 12 drives the second piston plate 18 to move to the left, compressing the first spring 19. When the second piston plate 18 moves to the left to trigger the touch delay switch 21, the touch delay switch 21 makes the normally closed electromagnetic valve and the electromagnet 28 be powered on for 10 seconds and then be powered off. After the normally closed electromagnetic valve is powered on, the high-pressure air in the space on the right side of the air cylinder 12 is quickly discharged through the exhaust port 13. After 10 seconds, the normally closed electromagnetic valve and the electromagnet 28 are powered off, the normally closed electromagnetic valve is closed, and the space on the right side of the air cylinder 12 starts to accumulate air again, waiting for the next trigger, achieving the effect of timed triggering. When the electromagnet 28 is electrified, the magnetic slide plate 26 moves forward under the action of the electromagnet 28 and the second spring 27, because the electromagnet 28 is adjacent to the magnetic slide plate 26 and the rear side of the electromagnet 28 is elastically connected with the magnetic slide plate 26 through the second spring 27. The rear side of the magnetic slide plate 26 is fixedly connected with the rack 25, and the rack 25 moves with the magnetic slide plate 26, engages with the second transmission gear 29, and drives the second transmission gear 29 to rotate. Because the rotating shaft 30 is rotatably connected with the second transmission gear 29 through the one-way bearing, the second transmission gear 29 drives the rotating shaft 30 to rotate half a circle, and the rotating shaft 30 drives the adjusting plate 31 to rotate half a circle, so that the two visual detection heads 32 are alternately used. After the electromagnet 28 is de-energized, the magnetic slide plate 26 moves back to reset under the action of the second spring 27, and waits for the next electromagnet 28 energization operation. The alternate use of the two visual detection heads 32 can avoid the fatigue use caused by the continuous work of a single camera.

[0026] First step: the double-shaft motor 7 is started, the rear output shaft drives the incomplete gear 22 to rotate, engages with the first transmission gear 8 to make the left conveying roller 3 rotate, and the conveying belt 4 moves; the initial rear visual detection head 32 is connected to the loop, and the circuit board is placed on the conveying belt 4, and the circuit board is conveyed to the detection groove 23 to start detection; Second step: the front end of the double-shaft motor 7 drives the rotating disc 15 to rotate, and the first piston plate 17 reciprocates through the connecting shaft 16; air enters the reciprocating piston cylinder 9 through the first one-way pipe 10, and then enters the air cylinder 12 through the second one-way pipe 11, so that the rear visual detection head 32 is actively cooled; Third step: the air cylinder 12 continuously accumulates air, the pressure increases, and the second piston plate 18 moves left to trigger the touch delay switch 21; the normally closed electromagnetic valve and the electromagnet 28 are electrified for 10 seconds, high-pressure air is discharged from the exhaust port 13, and the air is re-accumulated after 10 seconds of de-energization; Fourth step: the electromagnet 28 is electrified, the magnetic slide plate 26 moves forward, the rack 25 drives the second transmission gear 29 and the rotating shaft 30 to rotate half a circle, and the adjusting plate 31 rotates to make the two visual detection heads 32 alternate; after de-energization, the magnetic slide plate 26 resets for next operation.

[0027] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An automated circuit board testing tool, characterized in that: It comprises a placement support seat (1), the upper end of the placement support seat (1) is symmetrically fixedly connected to two vertical mounting plates (2), the upper ends of the two vertical mounting plates (2) are both fixedly connected to a connecting plate (5), the upper ends of the two connecting plates (5) are commonly fixedly connected to a detection box (6), and the lower end of the detection box (6) is provided with a detection slot (23); A detection mechanism, the detection mechanism comprising an adjustment plate (31) arranged in a detection slot (23), two visual detection heads (32) symmetrically arranged on the adjustment plate (31), two first electrical contacts (33) symmetrically arranged on the inner top of the detection slot (23), two second electrical contacts (34) mounted on the upper end of each of the visual detection heads (32), and two second electrical contacts (34) located at the rear side both cooperate with the first electrical contacts (33); An adjustment mechanism, the adjustment mechanism comprising an adjustment slot (24) provided on the front side of the detection box (6), a magnetic sliding plate (26) being slidable forward and backward being provided in the adjustment slot (24), a rack (25) being fixedly connected to the rear side of the magnetic sliding plate (26), a rotating shaft (30) being fixedly connected to the upper end of the adjustment plate (31), the upper end of the rotating shaft (30) extending into the adjustment slot (24) and being rotatably connected to the bottom of the adjustment slot (24), a second transmission gear (29) being mounted on the upper end of the rotating shaft (30), and the rotating shaft (30) and the second transmission gear (29) being rotatably connected via a one-way bearing; A heat dissipation mechanism is provided, wherein the heat dissipation mechanism is used to increase the service life of the visual detection head (32).

2. The automated circuit board testing tool according to claim 1, characterized in that: Two conveying rollers (3) are rotatably connected to the two vertical mounting plates (2), and a conveying belt (4) is wound around the two conveying rollers (3).

3. The automated circuit board testing tool according to claim 2, characterized in that: An electromagnet (28) is fixedly connected to the notch of the adjustment slot (24), and the rear side of the electromagnet (28) is elastically connected to the magnetic sliding plate (26) via a second spring (27). When the electromagnet (28) is energized, it attracts the adjacent surface of the magnetic sliding plate (26) with opposite polarities.

4. The automated circuit board testing tool according to claim 3, characterized in that: A dual-axis motor (7) is installed on the front side of the vertical mounting plate (2) located on the front side, and the rear end output shaft of the dual-axis motor (7) is fixedly connected to an incomplete gear (22). The front end of the conveying roller (3) located on the left side extends to the outside and is fixedly connected to a first transmission gear (8), and the incomplete gear (22) cooperates with the first transmission gear (8).

5. The automated circuit board testing tool according to claim 4, characterized in that: The heat dissipation mechanism comprises a reciprocating piston cylinder (9) mounted on the front side of the front vertical mounting plate (2), a first piston plate (17) capable of sliding left and right is provided in the reciprocating piston cylinder (9), a front output shaft of the dual-axis motor (7) is fixedly connected to a rotating disk (15), a front eccentric portion of the rotating disk (15) is rotatably connected to a connecting shaft (16), and the other end of the connecting shaft (16) is rotatably connected to the left side of the first piston plate (17).

6. The automated circuit board testing tool according to claim 5, characterized in that: The right side space of the reciprocating piston cylinder (9) is connected to a first one-way tube (10) and a second one-way tube (11); a plurality of air inlets (36) are provided on the side walls of the two visual inspection heads (32); the upper ends of the two visual inspection heads (32) are fixedly connected to a connecting tube (35); the lower ends of the two connecting tubes (35) are connected to the interior of the visual inspection head (32); the other end of the first one-way tube (10) extends to above the rear connecting tube (35) and cooperates with it.

7. The automated circuit board testing tool according to claim 6, characterized in that: An air cylinder (12) is installed on the front side of the vertical mounting plate (2) located at the front side. The left side space of the air cylinder (12) is connected to the outside world through a through port (14). The front side of the right side space of the air cylinder (12) is connected to the outside world through an exhaust port (13). A second piston plate (18) that can slide left and right is provided in the air cylinder (12). The left side of the second piston plate (18) is elastically connected to the left side wall of the air cylinder (12) through a first spring (19). The other end of the second one-way tube (11) extends into the interior of the air cylinder (12).

8. The automated circuit board testing tool according to claim 7, characterized in that: One-way valves are installed inside the first one-way tube (10) and the second one-way tube (11). The one-way valve inside the first one-way tube (10) flows in a direction such that the rear connecting tube (35) flows in a one-way direction into the right side space of the reciprocating piston cylinder (9), and the one-way valve inside the second one-way tube (11) flows in a direction such that the reciprocating piston cylinder (9) flows in a one-way direction into the right side space of the gas reservoir (12).

9. The automated circuit board testing tool according to claim 8, characterized in that: A normally closed electromagnetic valve is installed inside the exhaust port (13), a mounting post (20) is installed on the left side wall of the gas cylinder (12), and a touch delay switch (21) is installed on the right side of the mounting post (20). The touch delay switch (21) is electrically connected to the normally closed electromagnetic valve and the electromagnet (28). When the touch delay switch (21) is triggered, the normally closed electromagnetic valve and the electromagnet (28) are powered on for 10 seconds and then powered off.

10. A method for using an automated circuit board inspection tool, using the tool as claimed in claim 9, characterized in that: The following steps are involved: Step 1: The dual-axis motor (7) is started, and the rear output shaft drives the incomplete gear (22) to rotate, meshing with the first transmission gear (8) to rotate the left conveyor roller (3), and the conveyor belt (4) moves; initially, the rear visual inspection head (32) is connected to the circuit, and a circuit board is placed on the conveyor belt (4), and the circuit board is transported to the inspection slot (23) for inspection; Step 2: The front end of the dual-axis motor (7) drives the rotating disk (15) to rotate, and the first piston plate (17) is reciprocated via the connecting shaft (16); air enters the reciprocating piston cylinder (9) via the first one-way tube (10), and then enters the air storage cylinder (12) via the second one-way tube (11), allowing the rear visual inspection head (32) to actively dissipate heat; Step 3: The air storage cylinder (12) continuously stores air, and the pressure increases, pushing the second piston plate (18) to the left to trigger the touch delay switch (21); the normally closed solenoid valve and the electromagnet (28) are energized for 10 seconds, and the high-pressure air is discharged from the exhaust port (13). After 10 seconds, the power is turned off and the air is stored again; Step 4: The electromagnet (28) is energized, the magnetic sliding plate (26) moves forward, the rack (25) drives the second transmission gear (29) and the rotating shaft (30) to rotate half a circle, and the adjustment plate (31) rotates to make the two visual inspection heads (32) alternate; after the power is turned off, the magnetic sliding plate (26) is reset to wait for the next operation.

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