DBC test mechanism

Abstract

The utility model discloses a DBC testing mechanism which comprises a ferry line body, a DBC static testing mechanism, a multi-shaft mechanical arm and a tray conveying assembly, the multi-shaft mechanical arm is arranged between the upstream of the DBC static testing mechanism and the downstream of the ferry line body and used for transferring DBC, and the tray conveying assembly is arranged on the downstream of the ferry line body and used for conveying trays. The DBC static testing mechanism comprises a static testing machine, a first rotary switching mechanism and a first jacking heating mechanism, and at least two jacking platforms are arranged at the rotary end of the first rotary switching mechanism. According to the utility model, through the arrangement of the multi-axis mechanical arm, the DBC can be transferred from the downstream of the ferry line body to the upstream of the DBC static test mechanism, through the arrangement of the first rotary switching mechanism, a to-be-detected piece can be sent to a detection station, and through the first jacking heating mechanism, the to-be-detected piece can be jacked up to abut against detection equipment of the static test machine for detection. And the detection efficiency of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of DBC testing equipment, and more specifically to a DBC testing mechanism. Background Art

[0002] The DBC (ceramic substrate) test mechanism consists of a ferry line, DBC static test, DBC dynamic test, preheating table, cooling table, handling robot arm, NG area, transverse ferry, and pallet conveying system. The DBC pallet to be tested is connected from the front-end bonding line through the ferry line to the DBC static and dynamic test system, and then the DBC performs static test and dynamic test in sequence. After the test, the unqualified products are transported to the NG area by the handling robot arm, and the qualified products are transported to the DBC pallet by the handling robot arm and flow into the subsequent equipment.

[0003] However, in the prior art, manual transportation and testing are performed during the process from the ferry line to the DBC static test and the DBC dynamic test, which seriously reduces the product testing efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to improve the detection efficiency of products.

[0005] The utility model solves the above technical problems through the following technical means: a DBC testing mechanism, including a ferry line body, a DBC static testing mechanism, a multi-axis robot arm, and a pallet conveying assembly, the multi-axis robot arm is arranged between the upstream of the DBC static testing mechanism and the downstream of the ferry line body and is used to transfer the DBC, the pallet conveying assembly is arranged downstream of the ferry line body and is used to convey the pallet, the DBC static testing mechanism includes a static testing machine, a rotary switching mechanism and a jacking and heating mechanism, at least two jacking platforms are arranged on the rotating end of the rotary switching mechanism, the jacking platforms can be screwed into the detection station of the static testing machine, and the jacking and heating mechanism is used to push the jacking platform and cause the to-be-detected parts therein to abut against the detection equipment of the static testing machine.

[0006] Through the setting of the multi-axis robotic arm, the DBC can be transferred from the downstream of the ferry line to the upstream of the DBC static testing mechanism. Through the setting of the rotary switching mechanism 1, the workpiece to be tested can be sent to the testing station. Through the lifting and heating mechanism 1, the workpiece to be tested can be lifted up so that it can be aligned with the testing equipment of the static testing machine for testing, thereby improving the testing efficiency of the product.

[0007] As a preferred technical solution, the mobile end of the multi-axis robotic arm is connected to a suction head, and a camera and a barcode scanner are also provided on the outer side of the mobile end of the multi-axis robotic arm.

[0008] As a preferred technical solution, the rotary switching mechanism includes a rotary motor fixedly connected to the outside of a static testing machine, the output end of the rotary motor is rotatably connected to a rotary plate, both ends of the rotary plate are slidably connected to a lifting plate, a through slot is provided on the lifting plate, a protrusion is provided on the inner wall at the bottom of the through slot so that the through slot forms a placement position adapted for the part to be tested.

[0009] As a preferred technical solution, the jacking and heating mechanism includes an electric cylinder, a support platform, a first heating plate, a first boss, and a second boss. The support platform is fixedly connected to the bottom of the jacking platform through a bracket. The bottom of the support platform is fixedly connected to the electric cylinder. The end of the electric cylinder facing the jacking platform is fixedly connected to the first heating plate. The top of the first heating plate is fixedly connected to the first boss and the second boss. The first boss is located on the outside of the second boss. The first boss can be abutted against the jacking platform, and the second boss can be abutted against the part to be detected.

[0010] As a preferred technical solution, the lifting and heating mechanism also includes a first heat insulation plate and a guide column. The first heat insulation plate is fixedly connected to the bottom of the first heating plate, and the first heat insulation plate is slidably matched with the support platform through the guide column.

[0011] As a preferred technical solution, a preheating table is further provided between the upstream of the DBC static testing mechanism and the downstream of the ferry line body, and the preheating table includes a plurality of preheating plates arranged side by side, each of the preheating plates is provided with a heating rod and is connected to a thermocouple through the heating rod, and a second insulation plate is fixedly connected to the bottom of the preheating plate.

[0012] As a preferred technical solution, it also includes a DBC dynamic testing mechanism and a transverse ferry located between the downstream of the DBC static testing mechanism and the upstream of the DBC dynamic testing mechanism, the transverse ferry includes a linear module, a second heating plate, and a third thermal insulation plate, the moving end of the linear module is fixedly connected to the third thermal insulation plate, the top of the third thermal insulation plate is fixedly connected to the second heating plate, and the second heating plate is provided with a transport trough adapted to the part to be tested.

[0013] As a preferred technical solution, the DBC dynamic testing mechanism includes a dynamic testing machine, a second rotary switching mechanism, and a second lifting and heating mechanism. The second rotary switching mechanism has the same structure as the first rotary switching mechanism, and the second lifting and heating mechanism is the same as the first lifting and heating mechanism.

[0014] As a preferred technical solution, a cooling platform is further provided between the tail end of the tray conveying assembly and the downstream of the DBC dynamic testing mechanism. The cooling platform includes a cooling plate and a fan. A fan is provided at the bottom of the cooling plate and a plurality of grooves are opened at the top.

[0015] As a preferred technical solution, the pallet conveying assembly includes a conveying line body, and a blocking cylinder is also provided on the conveying surface of the conveying line body. The telescopic end of the blocking cylinder is fixedly connected with a block, and the axial direction of the blocking cylinder is perpendicular to the conveying direction of the conveying line body.

[0016] The advantages of the utility model are:

[0017] (1) In the present invention, by setting up a multi-axis robot arm, the DBC can be transferred from the downstream of the ferry line to the upstream of the DBC static testing mechanism, by setting up a rotary switching mechanism 1, the part to be tested can be delivered to the testing station, and by a lifting and heating mechanism 1, the part to be tested can be lifted up so that it can be aligned with the testing equipment of the dynamic testing machine for testing, thereby improving the testing efficiency of the product.

[0018] (2) In the present invention, by arranging a camera and a barcode scanner on the multi-axis robot arm, the barcode of the grasped part to be inspected can be scanned, which facilitates product traceability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a top view of the test mechanism provided in an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the docking mechanism structure provided by an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the structure of the longitudinal conveyor line provided by an embodiment of the utility model;

[0022] Figure 4 A schematic diagram of the docking plate structure provided in an embodiment of the utility model;

[0023] Figure 5 A schematic diagram of the structure of a static testing machine provided by an embodiment of the utility model;

[0024] Figure 6 A structural schematic diagram of a rotary switching mechanism provided in an embodiment of the utility model;

[0025] Figure 7 A schematic diagram of a structure of a lifting and heating mechanism provided in an embodiment of the utility model;

[0026] Figure 8 A schematic diagram of the preheating plate structure provided in an embodiment of the utility model;

[0027] Fig. 9 A schematic diagram of a transverse ferry structure provided by an embodiment of the utility model;

[0028] Fig.10 A schematic diagram of the structure of a dynamic testing machine provided by an embodiment of the utility model;

[0029] Fig.11 A second structural diagram of a rotary switching mechanism provided in an embodiment of the utility model;

[0030] Fig.12 A schematic diagram of the second structure of the lifting and heating mechanism provided in an embodiment of the utility model;

[0031] Fig.13 A schematic diagram of the structure of a pallet conveying assembly provided in an embodiment of the utility model;

[0032] Fig.14 A schematic diagram of the cooling stage structure provided by an embodiment of the utility model;

[0033] Fig.15 A schematic diagram of the structure of a multi-axis mechanical arm provided in an embodiment of the utility model;

[0034] Fig.16 A schematic diagram of the structure of the NG conveyor line provided by an embodiment of the utility model;

[0035] Figure numbers: 1. Ferry line; 11. Docking mechanism; 111. Docking cylinder; 112. Docking plate; 12. Longitudinal conveying line; 13. Safety baffle; 2. DBC static test mechanism; 21. Static test machine; 22. Rotary switching mechanism one; 221. Rotating motor; 222. Rotating plate; 223. Lifting plate; 2231. Through slot; 23. Lifting and heating mechanism one; 231. Electric cylinder; 232. Support table; 233. First heat insulation board; 234. First heating plate; 235. First boss; 236. Second boss; 237. Guide column; 3. DBC dynamic test mechanism; 31. Dynamic test machine; 32. Rotary switching mechanism two; 33. Lifting and heating mechanism two; 4. Preheating table; 41. Preheating plate; 42. Heating rod; 43. Second heat insulation plate; 44. First sensor; 5. Cooling table; 51. Cooling plate; 511. Groove; 52. Fan; 6. Multi-axis robot arm; 61. Camera; 62. Suction head; 63. Barcode scanner; 7. NG area; 71. NG conveyor line; 72. Third sensor; 8. Transverse ferry; 81. Second heating plate; 811. Transport trough; 82. Second sensor; 83. Third heat insulation plate; 9. Pallet conveying assembly; 91. Blocking cylinder; 911. Block; 92. Conveyor line; 93. Pallet positioning; 931. Limit bracket; 932. Limit screw; 10. Pallet assembly; 101. DBC; 102. Pallet. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] See also Figure 1 , a DBC testing mechanism, comprising a ferry line 1, a DBC static testing mechanism 2, a DBC dynamic testing mechanism 3, a preheating table 4, a cooling table 5, a multi-axis robot arm 6, an NG zone 7, a transverse ferry 8, a pallet conveying assembly 9, and a pallet assembly 10, wherein the to-be-tested part on the pallet assembly 10 flows into the ferry line 1, and flows out through the input end (first station) of the pallet conveying assembly 9, the preheating table 4, the DBC static testing mechanism 2, the transverse ferry 8, the DBC dynamic testing mechanism 3, the cooling table 5, and the output end (second station) of the pallet conveying assembly 9. In this embodiment, two multi-axis robot arms 6 are provided, wherein one multi-axis robot arm 6 is provided between the upstream of the DBC static testing mechanism 2 and the downstream of the ferry line 1 and is used to transfer DBC101, and the other multi-axis robot arm 6 is provided between the downstream of the DBC dynamic testing mechanism 3 and the second station of the pallet conveying assembly 9, and is also used to transfer DBC101;

[0038] The pallet conveying assembly 9 is arranged downstream of the ferry line 1 and is used to convey the pallet assembly 10. The pallet assembly 10 includes a DBC 101 and a pallet 102. The pallet 102 is provided with eight placement slots adapted to the DBC 101, arranged in two rows and four columns. It should be noted that: Figure 1 The solid arrow in the middle indicates the transfer direction of the pallet 102, and the dotted arrow indicates the transfer direction of the DBC 101.

[0039] See also Figure 2 , Figure 3 , Figure 4The ferry line body 1 includes a docking mechanism 11, a longitudinal conveying line body 12, and a safety baffle 13, wherein the longitudinal conveying line body 12 can be a synchronous belt conveyor in the prior art, and safety baffles 13 are fixedly connected on both sides thereof. At the intersection of the longitudinal conveying line body 12 and the first station of the pallet conveying assembly 9, due to the height difference, a docking mechanism 11 is set there, and the docking mechanism 11 is located in the area between the two guide rails of the longitudinal conveying line body 12, and is located below the conveying plane of the longitudinal conveying line body 12. The docking mechanism 11 includes a docking cylinder 111 and a docking plate 112. The docking cylinder 111 is fixed in the area between the two guide rails, and the telescopic end of the docking cylinder 111 is fixedly connected with the docking plate 112. The docking cylinder 111 can drive the docking plate 112 to lift the pallet 102 on the conveying surface, and push the pallet 102 into the first station of the pallet conveying assembly 9 through an external mechanism.

[0040] See also Figure 5 , Figure 6 , Figure 7 The DBC static testing mechanism 2 includes a static testing machine 21, a rotating switching mechanism 22 and a lifting and heating mechanism 23. At least two lifting platforms are provided on the rotating end of the rotating switching mechanism 22. The lifting platforms can be screwed into the detection station of the static testing machine 21. The lifting and heating mechanism 23 is used to push the lifting platforms and cause the test piece inside to collide with the detection equipment of the static testing machine 21.

[0041] The rotary switching mechanism 22 includes a rotary motor 221 fixedly connected to the outside of the static testing machine 21, the output end of the rotary motor 221 is rotatably connected to a rotary plate 222, and both ends of the rotary plate 222 are slidably connected to a lifting plate 223, and the lifting plate 223 is provided with a through slot 2231, and the inner wall at the bottom of the through slot 2231 is provided with a protrusion so that the through slot 2231 forms a placement position adapted to the part to be tested;

[0042] The jacking and heating mechanism 23 includes an electric cylinder 231, a support platform 232, a first heat insulation board 233, a first heating board 234, a first boss 235, a second boss 236, and a guide column 237. The support platform 232 is fixedly connected to the bottom of the jacking platform through a bracket. In this embodiment, the jacking platform is a lifting plate 223, and the lifting plate 223 is slidably matched with the rotating plate 222 through the guide column. The bottom of the support platform 232 is fixedly connected with an electric cylinder 231, and one end of the electric cylinder 231 facing the lifting plate 223 is connected to the first heating board 234. The first heating plate 234 is fixedly connected with a first boss 235 and a second boss 236 on the top. The first boss 235 is located outside the second boss 236. The first boss 235 can abut against the jacking platform. The second boss 236 can abut against the part to be detected. The plane where the top of the second boss 236 is located is above the plane where the top of the first boss 235 is located. The first heat insulation board 233 is fixedly connected to the bottom of the first heating plate 234. The first heat insulation board 233 is slidably matched with the support platform 232 through the guide column 237.

[0043] It should be noted that a lifting and heating mechanism 23 is provided at the bottom of each of the two lifting plates 223. The lifting and heating mechanism 23 is located at the detection station of the static testing machine 21. After the multi-axis robot 6 transfers the DBC101 on the preheating table 4 to the through groove 2231, the rotating switching mechanism 22 rotates 180 degrees to screw the DBC101 into the detection station. The first heat insulation plate 233 is driven by the electric cylinder 231 to drive the first heating plate 234, the first boss 235, and the second boss 236 to move toward the lifting plate 223 and the part to be detected, namely DBC101. The lifting plate 223 is lifted by the first boss 235. At this time, the DBC101 is lifted by the second boss 236, and support is provided for DBC101 so that it is offset from the detection equipment of the static testing machine 21. Since a high-temperature test is performed, after the test is completed, the DBC101 is rotated 180 degrees to return to the initial position. The first heating plate 234 can be used to keep warm.

[0044] See also Figure 8 The preheating table 4 includes a preheating plate 41, a heating rod 42, a second heat insulating plate 43, and a first sensor 44. The plurality of preheating plates 41 are arranged side by side. The preheating plates 41 are each provided with a heating rod 42 and are connected to a thermocouple through the heating rod 42. A second heat insulating plate 43 is fixedly connected to the bottom of the preheating plate 41. The setting of the preheating plate 41 achieves the effects of heat preservation and preheating, thereby shortening the heating time and improving the detection efficiency. A first sensor 44 is fixed to the bottom of the second heat insulating plate 43. The first sensor 44 is used to detect whether DBC101 is placed in the groove in the preheating plate 41.

[0045] See also Fig. 9The transverse ferry 8 is used to transport the DBC101 tested by the static testing machine 21 to the DBC dynamic testing mechanism 3, wherein the DBC101 is adsorbed from the through slot 2231 to the transport slot 811 of the transverse ferry 8 by the multi-axis robot arm 6, and the transverse ferry 8 includes a linear module, a second heating plate 81, a second sensor 82, and a third thermal insulation plate 83, wherein the linear module is a screw linear module in the prior art, and the moving end of the linear module is fixedly connected to the third thermal insulation plate 83, and the top of the third thermal insulation plate 83 is fixedly connected to the second heating plate 81, and the second heating plate 81 is provided with a transport slot 811 adapted to the part to be tested, namely DBC101, and DBC101 is moved to a side close to the DBC dynamic testing mechanism 3 by the linear module.

[0046] See also Fig.10 , Fig.11 , Fig.12 The DBC dynamic testing mechanism 3 includes a dynamic testing machine 31, a rotation switching mechanism 2 32, and a lifting and heating mechanism 2 33. The rotation switching mechanism 2 32 has the same structure as the rotation switching mechanism 1 22, and the lifting and heating mechanism 2 33 is the same as the lifting and heating mechanism 1 23. The dynamic testing machine 31 is an existing structure used for dynamic testing with DBC101.

[0047] See also Fig.14 A cooling platform 5 is also provided between the second station of the tray conveying assembly 9, i.e., the tail end thereof and the downstream of the DBC dynamic testing mechanism 3. The cooling platform 5 includes a cooling plate 51 and a fan 52. The fan 52 is provided at the bottom of the cooling plate 51, and a plurality of grooves 511 are provided at the top. The DBC101 after the dynamic test is transferred to the grooves 511 through the multi-axis robot arm 6. A heat dissipation channel can be formed in the DBC101 through the grooves 511, and the heat dissipation efficiency can be accelerated by the setting of the fan 52.

[0048] See also Fig.16 NG areas 7 (defective product areas) are provided on the sides of the two multi-axis robotic arms 6. The NG area 7 includes an NG conveying line body 71 and a third sensor 72. The NG conveying line body 71 is a synchronous belt conveyor. A baffle is provided at the end of the synchronous belt conveyor. The third sensor 72 is installed on the baffle for detecting whether the conveying surface of the synchronous belt conveyor is fully loaded.

[0049] See also Fig.13The pallet conveying assembly 9 includes a blocking cylinder 91, a conveying line body 92, and a pallet positioning assembly 93, wherein the conveying line body 92 is a synchronous belt conveyor. A blocking cylinder 91 is arranged at a position along the conveying direction of the conveying line body 92 and the length direction of a pallet 102 at the connection between the conveying line body 92 and the ferry line body 1. A stopper 911 is fixedly connected to the telescopic end of the blocking cylinder 91. The axial direction of the blocking cylinder 91 is perpendicular to the conveying direction of the conveying line body 92, so that it is the first time for the pallet 102 to be transported. At least two pallet positioning assemblies 93 are also arranged on the conveying line body 92. The pallet positioning assembly 93 includes a limiting bracket 931, a limiting screw 932, a top plate, and a lifting cylinder. , one end of the limit bracket 931 located on the top of the pallet 102 is fixedly connected to the limit screw 932; the lifting cylinder is fixed on the ground, and its telescopic end is fixedly connected to the top plate, and four positioning columns are fixedly connected to the top plate. Four positioning holes matching the positioning columns are opened on the four corners of the pallet 102. The pallet 102 is lifted from the conveying surface of the conveyor line body 92 to the height of the limit screw 932 by the lifting cylinder. After the multi-axis robot arm 6 takes the material, the empty pallet 102 falls back to the conveying surface of the conveyor line body 92. At the second station of the pallet conveying assembly 9, another multi-axis robot arm 6 places the cooled DBC101 on the empty pallet 102 and flows into the next process.

[0050] See also Fig.15 The moving end of the multi-axis robot arm 6 is connected to a suction head 62, and a camera 61 and a barcode scanner 63 are also provided on the outside of the moving end of the multi-axis robot arm 6. In this embodiment, the multi-axis robot arm 6 is a four-axis robot arm, which can realize movement in four directions. At the same time, the camera 61 can be electrically connected to the controller of the entire mechanism to control the movement of the multi-axis robot arm 6. The barcode scanner 63 is used to scan each DBC101, and the static test and dynamic test information is matched with each DBC101 for easy traceability.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A DBC testing mechanism, comprising a ferry line (1), a DBC static testing mechanism (2), a multi-axis robot arm (6), and a pallet conveying assembly (9), wherein the multi-axis robot arm (6) is arranged between the upstream of the DBC static testing mechanism (2) and the downstream of the ferry line (1) and is used to transfer the DBC (101), and the pallet conveying assembly (9) is arranged downstream of the ferry line (1) and is used to convey the pallet (102), characterized in that: The DBC static testing mechanism (2) comprises a static testing machine (21), a rotary switching mechanism (22) and a lifting and heating mechanism (23); at least two lifting platforms are provided on the rotating end of the rotary switching mechanism (22); the lifting platforms can be screwed into the detection station of the static testing machine (21); the lifting and heating mechanism (23) is used to push the lifting platforms and cause the to-be-detected parts therein to abut against the detection equipment of the static testing machine (21).

2. A DBC testing mechanism according to claim 1, characterized in that: The mobile end of the multi-axis mechanical arm (6) is connected to a suction head (62), and a camera (61) and a barcode scanning gun (63) are also provided on the outer side of the mobile end of the multi-axis mechanical arm (6).

3. A DBC testing mechanism according to claim 1, characterized in that: The first rotary switching mechanism (22) comprises a rotary motor (221) fixedly connected to the outside of the static testing machine (21); the output end of the rotary motor (221) is rotatably connected to a rotary plate (222); both ends of the rotary plate (222) are slidably connected to a lifting plate (223); a through slot (2231) is provided on the lifting plate (223); a protrusion is provided on the inner wall of the bottom of the through slot (2231) so that the through slot (2231) forms a placement position adapted to the part to be tested.

4. A DBC testing mechanism according to claim 3, characterized in that: The lifting and heating mechanism (23) comprises an electric cylinder (231), a support platform (232), a first heating plate (234), a first boss (235), and a second boss (236); the support platform (232) is fixedly connected to the bottom of the lifting platform through a bracket; the bottom of the support platform (232) is fixedly connected to the electric cylinder (231); one end of the electric cylinder (231) facing the lifting platform is fixedly connected to the first heating plate (234); the top of the first heating plate (234) is fixedly connected to the first boss (235) and the second boss (236); the first boss (235) is located on the outside of the second boss (236); the first boss (235) can abut against the lifting platform; and the second boss (236) can abut against the part to be detected.

5. A DBC testing mechanism according to claim 4, characterized in that: The lifting and heating mechanism (23) further comprises a first heat insulation plate (233) and a guide column (237); the first heat insulation plate (233) is fixedly connected to the bottom of the first heating plate (234); the first heat insulation plate (233) is slidably matched with the support platform (232) via the guide column (237).

6. A DBC testing mechanism according to claim 1, characterized in that: A preheating platform (4) is also provided between the upstream of the DBC static test mechanism (2) and the downstream of the ferry line body (1), and the preheating platform (4) includes a plurality of preheating plates (41) arranged side by side, each of the preheating plates (41) is provided with a heating rod (42) and is connected to a thermocouple via the heating rod (42), and a second heat insulation plate (43) is fixedly connected to the bottom of the preheating plate (41).

7. A DBC testing mechanism according to claim 1, characterized in that: The invention also comprises a DBC dynamic test mechanism (3) and a transverse ferry (8) arranged between the downstream of the DBC static test mechanism (2) and the upstream of the DBC dynamic test mechanism (3); the transverse ferry (8) comprises a linear module, a second heating plate (81), and a third heat insulation plate (83); the movable end of the linear module is fixedly connected to the third heat insulation plate (83); the top of the third heat insulation plate (83) is fixedly connected to the second heating plate (81); and the second heating plate (81) is provided with a transport trough (811) adapted to the part to be tested.

8. A DBC testing mechanism according to claim 7, characterized in that: The DBC dynamic testing mechanism (3) comprises a dynamic testing machine (31), a second rotation switching mechanism (32), and a second lifting and heating mechanism (33); the second rotation switching mechanism (32) has the same structure as the first rotation switching mechanism (22); and the second lifting and heating mechanism (33) has the same structure as the first lifting and heating mechanism (23).

9. A DBC testing mechanism according to claim 7, characterized in that: A cooling platform (5) is also provided between the tail end of the tray conveying assembly (9) and the downstream of the DBC dynamic testing mechanism (3), and the cooling platform (5) comprises a cooling plate (51) and a fan (52). The fan (52) is provided at the bottom of the cooling plate (51) and a plurality of grooves (511) are provided at the top.

10. A DBC testing mechanism according to claim 1, characterized in that: The pallet conveying assembly (9) comprises a conveying line body (92), a conveying surface of the conveying line body (92) is also provided with a blocking cylinder (91), a telescopic end of the blocking cylinder (91) is fixedly connected to a blocking block (911), and an axial direction of the blocking cylinder (91) is perpendicular to the conveying direction of the conveying line body (92).

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