A thermal resistance test tool for surface mounted high voltage diodes

Abstract

The utility model relates to the technical field of production of mounted high-voltage diodes, and in particular to a thermal resistance test tool for surface mounted high-voltage diodes, including a bottom plate. The utility model has the advantages of material unloading and sorting functions through the cooperation of a first electric push rod, a linear motor, a movable rod, a movable plate, a suction cup mechanism and a guide plate. When the thermal resistance value of the mounted diode is found to be unqualified after the test is completed, the controller controls the linear motor to work, and the moving end of the linear motor drives the movable rod and the movable plate to move to the left. When the movable plate moves to the top of the lower box body, the controller controls the first electric push rod to contract, and the bottom of the vacuum suction cup contacts the surface of the mounted diode. Then the controller controls the vacuum pump to work, thereby adsorbing the mounted diode. At this time, the moving end of the linear motor drives the mounted diode to move to the left, and places the mounted diode on the surface of the guide plate on the left, completing the unloading and sorting operations.

Description

Technical Field

[0001] The utility model relates to the technical field of production of mounted high-voltage diodes, in particular to a thermal resistance testing tool for surface mounted high-voltage diodes. Background Art

[0002] Mounted high-voltage diodes are an important electronic component. They are usually used in circuits as rectifiers, voltage doublers or protection components. During the production process of diodes, thermal resistance test tools are needed to test their thermal resistance values.

[0003] After searching, the patent number is CN217007086U, and the name is a utility model of a thermal resistance tester and a chip fixture thereof, which includes a base plate, a top plate arranged above the base plate, and four groups of support columns connected between the base plate and the top plate. Through research and analysis, it is found that although it has the advantages of simple structure, convenient production and easy popularization during use, it still has the following disadvantages to a certain extent.

[0004] For example, it does not have the function of automatic unloading and sorting. During the use of the above device, after the detection of the mounted diodes is completed, it is necessary to manually pick up and unload them. This method is time-consuming and labor-intensive. At the same time, the high-temperature mounted diodes will also cause burns to the hands of the staff, which is easy to cause safety hazards. In order to solve the above technical problems, we have designed a surface mounted high-voltage diode thermal resistance test tooling. Utility Model Content

[0005] The utility model aims to provide a surface mounted high voltage diode thermal resistance test tool, which has the advantages of automatic unloading and sorting function and cooling function, and solves the problem that the existing test tool cannot automatically unload and sort the mounted diodes after the test is completed during use, and cannot cool the surface of the high temperature mounted diode.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a surface mounted high-voltage diode thermal resistance testing tool, comprising a base plate, the top of the base plate is connected to a lower box body through a first support rod, the inner cavity of the lower box body is fixedly connected to a heat conducting plate, the bottom of the heat conducting plate is connected to an electric heating plate through bolts, both sides of the rear side of the top of the base plate are connected to a first electric push rod through bolts, the output end of the first electric push rod is connected to a linear motor through bolts, the moving end of the linear motor is connected to a movable rod through bolts, the front side of the movable rod is riveted with a movable plate, both sides of the top of the movable plate are connected to a suction cup mechanism through bolts, the top of the movable plate is riveted with a cooling mechanism, the rear side of the top of the base plate is riveted with a vertical plate, the top of the front side of the vertical plate is riveted with a temperature measuring mechanism, both sides of the lower box body are penetrated and fixedly connected with a first temperature sensor, the front side of the base plate is connected to a controller through bolts, and both sides of the top of the base plate are connected to a guide plate through a second support rod.

[0007] Preferably, the suction cup mechanism includes a vacuum pump, the bottom of which is connected to the movable plate by bolts, the air inlet pipe of the vacuum pump is connected to a first air exhaust pipe, the side of the first air exhaust pipe away from the vacuum pump is connected to a distribution pipe, the opposite side of the distribution pipe is riveted to the movable plate, the bottom of the distribution pipe is connected to a second air exhaust pipe, the opposite sides of the second air exhaust pipe are connected to a vacuum suction cup, the top of the vacuum suction cup is fixedly connected to the movable plate, and the output end of the controller is unidirectionally electrically connected to the vacuum pump.

[0008] Preferably, the temperature measuring mechanism includes a horizontal plate, the rear side of the horizontal plate is riveted to the vertical plate, the front side of the top of the horizontal plate is connected to a second electric push rod by bolts, the output end of the second electric push rod is connected to a pressure sensor by bolts, the bottom of the pressure sensor is connected to an upper box body by bolts, the top of the upper box body is penetrated and fixedly connected with a second temperature sensor, the output end of the controller is unidirectionally electrically connected to the second electric push rod, and the controller is bidirectionally electrically connected to the second temperature sensor.

[0009] Preferably, the cooling mechanism includes a shell, the bottom of which is fixedly connected to the movable plate, a fan is fixedly connected to the top of the shell, semiconductor refrigeration plates are connected to both sides of the shell by bolts, the cooling end of the semiconductor refrigeration plate is fixedly connected to a cooling rod, the opposite sides of the cooling rod pass through the inner cavity of the shell, a cooling hole is opened at the bottom of the shell, a circular hole matching the cooling hole is opened at the bottom of the movable plate, and the output end of the controller is unidirectionally electrically connected to the fan and the semiconductor refrigeration plate respectively.

[0010] Preferably, mounting frames are riveted at the four corners of the bottom of the base plate, and mounting holes are provided at the bottom of the mounting frames.

[0011] Preferably, the output end of the controller is unidirectionally electrically connected to the first electric push rod, the electric heating plate and the linear motor respectively, and the controller is bidirectionally electrically connected to the first temperature sensor.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model has the advantages of unloading and sorting functions through the cooperation of the first electric push rod, the linear motor, the movable rod, the movable plate, the suction cup mechanism and the guide plate. When the thermal resistance value of the mounted diode is found to be unqualified after the detection is completed, the controller controls the linear motor to work, and the movable end of the linear motor drives the movable rod and the movable plate to move to the left. When the movable plate moves to the top of the lower box body, the controller controls the first electric push rod to contract, and the bottom of the vacuum suction cup contacts the surface of the mounted diode. Then the controller controls the vacuum pump to work, thereby adsorbing the mounted diode. At this time, the movable end of the linear motor drives the mounted diode to move to the left, and places the mounted diode on the surface of the guide plate on the left, completing the unloading and sorting operations.

[0014] 2. The utility model has the advantage of cooling function through the cooperation of the shell, fan, semiconductor refrigeration plate, cooling rod and cooling hole. When cooling the mounted diode, the controller controls the operation of the semiconductor refrigeration plate and the fan. The fan blows air into the inner cavity of the shell. The semiconductor refrigeration plate cools the air through the cooling rod. The cooled air is blown to the surface of the mounted diode through the cooling hole, thereby cooling it. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0016] Figure 2 This is a three-dimensional diagram of the heat conduction plate structure of the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the local structure of the utility model;

[0018] Figure 4 It is a three-dimensional bottom view of the local structure of the utility model;

[0019] Figure 5 It is a three-dimensional cross-sectional view of the shell structure of the utility model.

[0020] In the figure: 1. bottom plate; 2. lower box body; 3. heat conduction plate; 4. electric heating plate; 5. first electric push rod; 6. linear motor; 7. movable rod; 8. movable plate; 9. suction cup mechanism; 10. cooling mechanism; 11. vertical plate; 12. temperature measuring mechanism; 13. first temperature sensor; 14. controller; 15. guide plate; 16. vacuum pump; 17. first exhaust pipe; 18. distribution pipe; 19. second exhaust pipe; 20. vacuum suction cup; 21. horizontal plate; 22. second electric push rod; 23. pressure sensor; 24. second temperature sensor; 25. shell; 26. fan; 27. semiconductor refrigeration plate; 28. cooling rod; 29. ​​cooling hole; 30. upper box body. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 5 A surface mounted high voltage diode thermal resistance test tool comprises a bottom plate 1, the top of the bottom plate 1 is connected to a lower box body 2 through a first support rod, the inner cavity of the lower box body 2 is fixedly connected to a heat conducting plate 3, the bottom of the heat conducting plate 3 is connected to an electric heating plate 4 through bolts, both sides of the rear side of the top of the bottom plate 1 are connected to a first electric push rod 5 through bolts, the output end of the first electric push rod 5 is connected to a linear motor 6 through bolts, the moving end of the linear motor 6 is connected to a movable rod 7 through bolts, the front side of the movable rod 7 is riveted with a movable plate 8, both sides of the top of the movable plate 8 are connected to a suction cup mechanism 9 through bolts, a cooling mechanism 10 is riveted to the top of the movable plate 8, a vertical plate 11 is riveted to the rear side of the top of the bottom plate 1, a temperature measuring mechanism 12 is riveted to the top of the front side of the vertical plate 11, both sides of the lower box body 2 are penetrated and fixedly connected with a first temperature sensor 13, the front side of the bottom plate 1 is connected to a controller 14 through bolts, and both sides of the top of the bottom plate 1 are connected to a guide plate 15 through a second support rod.

[0022] See also Figure 1 and Figure 3 The suction cup mechanism 9 includes a vacuum pump 16, the bottom of which is connected to the movable plate 8 by bolts, the air inlet pipe of the vacuum pump 16 is connected to a first air exhaust pipe 17, the side of the first air exhaust pipe 17 away from the vacuum pump 16 is connected to a distribution pipe 18, the opposite side of the distribution pipe 18 is riveted to the movable plate 8, the bottom of the distribution pipe 18 is connected to a second air exhaust pipe 19, the opposite side of the second air exhaust pipe 19 is connected to a vacuum suction cup 20, the top of the vacuum suction cup 20 is fixedly connected to the movable plate 8, the output end of the controller 14 is unidirectionally electrically connected to the vacuum pump 16, and by setting the vacuum suction cup 20, the mounted diode can be adsorbed, thereby facilitating subsequent transportation work.

[0023] See also Figure 1The temperature measuring mechanism 12 includes a horizontal plate 21, the rear side of the horizontal plate 21 is riveted to the vertical plate 11, the front side of the top of the horizontal plate 21 is connected to the second electric push rod 22 by bolts, the output end of the second electric push rod 22 is connected to the pressure sensor 23 by bolts, the bottom of the pressure sensor 23 is connected to the upper box body 30 by bolts, the top of the upper box body 30 is penetrated and fixedly connected with the second temperature sensor 24, the output end of the controller 14 is unidirectionally electrically connected to the second electric push rod 22, and the controller 14 is bidirectionally electrically connected to the second temperature sensor 24. By setting the pressure sensor 23, the pressure value can be monitored in real time to avoid excessive pressure damaging the mounted diode.

[0024] See also Figure 1 and Figure 5 The cooling mechanism 10 includes a shell 25, the bottom of which is fixedly connected to the movable plate 8, a fan 26 is fixedly connected to the top of the shell 25, semiconductor cooling plates 27 are connected to both sides of the shell 25 by bolts, and a cooling rod 28 is fixedly connected to the cooling end of the semiconductor cooling plate 27, and the opposite side of the cooling rod 28 passes through the inner cavity of the shell 25, a cooling hole 29 is opened at the bottom of the shell 25, and a circular hole matched with the cooling hole 29 is opened at the bottom of the movable plate 8, and the output end of the controller 14 is electrically connected to the fan 26 and the semiconductor cooling plate 27 in one way respectively. By setting the circular hole, cool wind can pass through the movable plate 8 and blow to the surface of the mounted diode, thereby facilitating subsequent cooling operations.

[0025] See also Figure 1 The four corners of the bottom of the base plate 1 are riveted with mounting frames, and the bottom of the mounting frame is provided with mounting holes. By setting the mounting frame and the mounting holes, the base plate 1 can be conveniently fixed on the surface of the workbench.

[0026] See also Figure 1 The output end of the controller 14 is unidirectionally electrically connected to the first electric push rod 5 , the electric heating plate 4 and the linear motor 6 , respectively, and the controller 14 is bidirectionally electrically connected to the first temperature sensor 13 .

[0027] When in use, the mounted diode is placed in the inner cavity of the lower box body 2, and the bottom of the mounted diode contacts the heat conducting plate 3. Then, the controller 14 controls the second electric push rod 22 to extend, and the output end of the second electric push rod 22 drives the pressure sensor 23 and the upper box body 30 to move downward, and the bottom of the upper box body 30 contacts the mounted diode. Then, the controller 14 controls the electric heating plate 4 to work, and the electric heating plate 4 heats the mounted diode through the heat conducting plate 3. Heat is transferred from the bottom to the top of the mounted diode. The first temperature sensor 13 detects the temperature of the heat conducting plate 3, and the second temperature sensor 24 detects the temperature of the top of the mounted diode. Then, the controller 14 calculates the thermal resistance through the temperature of the heat conducting plate 3 and the temperature of the top of the mounted diode. After the test is completed, when the mounted diode is qualified, the controller 14 controls the second electric push rod 22 to contract, and the second electric push rod 22 drives the upper box body 30 to move upward. Then, the controller 14 controls the linear motor 6 to work, and the moving end of the linear motor 6 drives the movable rod 7 and the movable plate 8 Move to the left, when the movable plate 8 moves to the top of the lower box body 2, the controller 14 controls the first electric push rod 5 to retract, and the first electric push rod 5 drives the linear motor 6, the movable rod 7 and the movable plate 8 to move downward, and the bottom of the vacuum suction cup 20 contacts the surface of the mounted diode, and then the controller 14 controls the vacuum pump 16 to work, so as to adsorb the mounted diode. At this time, the moving end of the linear motor 6 drives the mounted diode to move to the right, and moves the mounted diode to the surface of the guide plate 15 on the right. During the movement, the controller 14 controls the operation of the semiconductor refrigeration plate 27 and the fan 26. The fan 26 blows air into the inner cavity of the shell 25. The semiconductor refrigeration plate 27 cools the air through the cooling rod 28. The cooled air is blown to the surface of the mounted diode through the cooling hole 29, so as to cool it. When it moves to the top of the guide plate 15 on the right, the controller 14 turns off the vacuum pump 16, and the qualified mounted diode falls to the surface of the guide plate 15 on the right, and the unloading and sorting operations are completed at this time.

[0028] To sum up: the surface mounted high-voltage diode thermal resistance test tool, through the cooperation of the first electric push rod 5, the linear motor 6, the movable rod 7, the movable plate 8, the suction cup mechanism 9, the guide plate 15, the shell 25, the fan 26, the semiconductor cooling plate 27, the cooling rod 28 and the cooling hole 29, solves the problem that the existing test tool cannot automatically unload and sort the mounted diodes after the test during use, and cannot cool the surface of the high-temperature mounted diodes.

Claims

1. A surface mounted high voltage diode thermal resistance test tool, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is connected to the lower box body (2) via a first support rod, the inner cavity of the lower box body (2) is fixedly connected to a heat conducting plate (3), the bottom of the heat conducting plate (3) is connected to an electric heating plate (4) via bolts, both sides of the rear side of the top of the bottom plate (1) are connected to a first electric push rod (5) via bolts, the output end of the first electric push rod (5) is connected to a linear motor (6) via bolts, the moving end of the linear motor (6) is connected to a movable rod (7) via bolts, and the front side of the movable rod (7) is riveted with a movable plate (8), Both sides of the top of the movable plate (8) are connected to suction cup mechanisms (9) by bolts, the top of the movable plate (8) is riveted with a cooling mechanism (10), the rear side of the top of the bottom plate (1) is riveted with a vertical plate (11), the top of the front side of the vertical plate (11) is riveted with a temperature measuring mechanism (12), both sides of the lower box body (2) are penetrated and fixedly connected with a first temperature sensor (13), the front side of the bottom plate (1) is connected to a controller (14) by bolts, and both sides of the top of the bottom plate (1) are connected to guide plates (15) by second support rods.

2. A surface mounted high voltage diode thermal resistance test tool according to claim 1, characterized in that: The suction cup mechanism (9) comprises a vacuum pump (16), the bottom of which is connected to the movable plate (8) by bolts, the air inlet pipe of the vacuum pump (16) is connected to a first air exhaust pipe (17), the side of the first air exhaust pipe (17) away from the vacuum pump (16) is connected to a distribution pipe (18), the opposite side of the distribution pipe (18) is riveted to the movable plate (8), the bottom of the distribution pipe (18) is connected to a second air exhaust pipe (19), the opposite side of the second air exhaust pipe (19) is connected to a vacuum suction cup (20), the top of the vacuum suction cup (20) is fixedly connected to the movable plate (8), and the output end of the controller (14) is unidirectionally electrically connected to the vacuum pump (16).

3. The thermal resistance test tool for surface mounted high voltage diode according to claim 1, characterized in that: The temperature measuring mechanism (12) comprises a horizontal plate (21), the rear side of the horizontal plate (21) is riveted to the vertical plate (11), the front side of the top of the horizontal plate (21) is connected to a second electric push rod (22) by bolts, the output end of the second electric push rod (22) is connected to a pressure sensor (23) by bolts, the bottom of the pressure sensor (23) is connected to an upper box body (30) by bolts, the top of the upper box body (30) is penetrated and fixedly connected with a second temperature sensor (24), the output end of the controller (14) is unidirectionally electrically connected to the second electric push rod (22), and the controller (14) is bidirectionally electrically connected to the second temperature sensor (24).

4. The thermal resistance test tool for surface mounted high voltage diode according to claim 1, characterized in that: The cooling mechanism (10) comprises a shell (25), the bottom of the shell (25) is fixedly connected to the movable plate (8), the top of the shell (25) is penetrated and fixedly connected with a fan (26), both sides of the shell (25) are connected with semiconductor cooling plates (27) by bolts, the cooling end of the semiconductor cooling plate (27) is fixedly connected with a cooling rod (28), the opposite side of the cooling rod (28) penetrates into the inner cavity of the shell (25), the bottom of the shell (25) is provided with a cooling hole (29), the bottom of the movable plate (8) is provided with a circular hole matched with the cooling hole (29), and the output end of the controller (14) is unidirectionally electrically connected with the fan (26) and the semiconductor cooling plate (27) respectively.

5. The thermal resistance test tool for surface mounted high voltage diode according to claim 1, characterized in that: The four corners of the bottom of the base plate (1) are riveted with mounting frames, and the bottom of the mounting frames is provided with mounting holes.

6. The thermal resistance test tool for surface mounted high voltage diode according to claim 1, characterized in that: The output end of the controller (14) is unidirectionally electrically connected to the first electric push rod (5), the electric heating plate (4) and the linear motor (6), respectively, and the controller (14) is bidirectionally electrically connected to the first temperature sensor (13).

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