IGBT (Insulated Gate Bipolar Translator) bottom guard plate flatness detection equipment

Abstract

The invention relates to the technical field of flatness detection, and discloses IGBT bottom guard plate flatness detection equipment which comprises a conveying belt and further comprises a U-shaped frame, and the inner sides of the two vertical edges of the U-shaped frame are fixedly installed on the opposite side faces of the conveying belt respectively; the detection assembly is used for detecting the flatness of the TGBT bottom protection plate; the driving assembly is used for driving the detection assembly to work; and the placement protection assembly is arranged on the conveying belt and the U-shaped frame, and the placement protection assembly is used for placing the IGBT bottom protection plate and protecting the IGBT bottom protection plate during detection. When the IGBT bottom guard plate is detected, paintbrushes of different colors can make contact with a paper tape according to lifting of the detection head so that lines of different colors can be drawn on the paper tape when the IGBT bottom guard plate is concave and convex, the IGBT bottom guard plate can be correspondingly processed in time and accurately according to the positions and colors of the lines drawn on the paper tape, and the production efficiency of the IGBT bottom guard plate is improved. And the detection effect of the equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of flatness detection, and in particular to a device for detecting the flatness of an IGBT bottom guard plate. Background Art

[0002] The IGBT bottom guard plate is an important component in power electronic equipment. The IGBT bottom guard plate is a protective device installed under the IGBT module. The main function of the IGBT bottom guard plate is to provide stable electrical connection and effective heat dissipation support to protect the IGBT module from damage by the external environment. The IGBT bottom guard plate is usually made of materials such as copper.

[0003] For example, the patent with announcement number CN113458010B discloses a device for detecting the flatness of metal plates after stamping. Although the flatness of the material can be detected by a detection pen, it not only does not have the function of protecting the material during the detection, but also the display of the detection result is not intuitive enough, which reduces the judgment of the detection result after the detection. Therefore, it is urgent to design an IGBT bottom guard plate flatness detection device. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose an IGBT bottom guard plate flatness detection device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An IGBT bottom guard plate flatness detection device comprises a conveyor belt and also comprises: U-shaped frame, the inner sides of the two vertical sides of the U-shaped frame are fixedly installed on the opposite sides of the conveyor belt; The detection component is arranged below the horizontal side of the U-shaped frame and is used to detect the flatness of the TGBT bottom guard plate; A driving component is arranged on the U-shaped frame and is used to drive the detection component to work; A protective assembly is placed, and the protective assembly is arranged on the conveyor belt and the U-shaped frame. The protective assembly is used to place the IGBT bottom guard plate and protect it during detection.

[0006] As a further technical solution of the present invention, the detection component includes: a connecting plate, which is horizontally arranged below the horizontal side of the U-shaped frame, and a main spring rod and a vertical plate are vertically fixedly installed on the bottom of the connecting plate. The fixed end of the main spring rod and the telescopic rod are connected by a spline sliding connection, and a conical detection head is installed at the end of the telescopic end of the main spring rod. A clamp for clamping the telescopic rod is installed on the fixed end of the main spring rod, a box is fixedly installed at the end of the vertical plate, and a ring is fixedly sleeved on the surface of the telescopic end of the main spring rod.

[0007] As a further technical solution of the present invention, the side of the box is rotatably installed on the turntable, and a first movable rod is rotatably installed on the outer edge of the side of the turntable away from the box, and the end of the first movable rod away from the turntable is rotatably installed on the ring, and a large gear and a small gear that mesh with each other are rotatably installed inside the box. The side of the turntable is fixedly installed at the center of the side of the large gear through a connecting shaft. The large gear is a missing gear, and a rotating rod is rotatably installed on the side of the box away from the turntable. The side of the rotating rod is fixedly installed at the center of the side of the small gear through a connecting shaft, and there is friction between the small gear and the inside of the box.

[0008] As a further technical solution of the present invention, two discs are rotatably sleeved on the surface of the rotating rod, a shift plate is fixedly installed on the surface of the rotating rod, the shift plate is located between the two discs, side plates are fixedly installed on the opposite sides of the two discs, the two side plates are symmetrically arranged, the shift plate is located between the two side plates, horizontal plates are horizontally arranged above the two discs, second movable rods are rotatably installed on the bottom of the two horizontal plates, the two second movable rods are symmetrically arranged, and the ends of the two second movable rods are respectively rotatably installed on the opposite sides of the two discs.

[0009] As a further technical solution of the present invention, a groove plate is vertically fixedly installed on the side of the vertical plate, a Y-shaped groove is opened on the side of the groove plate, two symmetrically arranged sliding columns are slidably installed inside the Y-shaped groove, and two symmetrically arranged detection blocks are slidably installed on the side of the groove plate, and the ends of the two sliding columns are respectively fixedly installed on the sides of the two detection blocks, and paintbrushes are vertically installed on the top of the two detection blocks, and the two brushes are different in color.

[0010] As a further technical solution of the present invention, a first telescopic rod is vertically fixedly installed on the top of the two horizontal plates, the telescopic ends of the two first telescopic rods are fixedly installed on the bottom of the slot plate, and third spring rods are horizontally fixedly installed on the sides away from the two detection blocks, the fixed end and the telescopic end of each third spring rod are connected by a spline, and a column is vertically fixedly installed on the bottom of one end of each third spring rod away from the detection block, and the ends of the two columns are respectively fixedly installed on the tops of the two horizontal plates.

[0011] As a further technical solution of the present invention, the driving assembly includes: a connecting plate, the connecting plate is horizontally arranged below the horizontal side of the U-shaped frame, an electric telescopic rod is vertically installed on the top of the horizontal side of the U-shaped frame, the output end of the electric telescopic rod is installed on the top of the connecting plate, a first electric slide is horizontally installed on the bottom of the connecting plate, a second electric slide is longitudinally installed on the bottom of the output end of the first electric slide, and the output end of the second electric slide is fixedly installed on the top of the connecting plate.

[0012] As a further technical solution of the present invention, two symmetrically arranged limit plates are fixed at both ends of the side of the second electric slide, and round rollers are rotatably installed on the side ends of the two limit plates. Limiting columns are also rotatably installed on each limit plate, and paper tapes are wrapped around the two round rollers. The paper tapes pass through the two limit columns, and the lower horizontal edge of the paper tape is located above the groove plate. A driving motor is installed on the corresponding side of the limit plate, and the output shaft of the driving motor is installed at the center of the corresponding side of the round roller.

[0013] As a further technical solution of the present invention, the placement protection component includes: a first spring rod, there are multiple first spring rods, the multiple first spring rods are evenly distributed on the surface of the conveyor belt, the fixed end and the telescopic end of each first spring rod are connected by a spline sliding connection, and the telescopic end of each first spring rod is fixedly installed with a placement platform.

[0014] As a further technical solution of the present invention, a frame is horizontally fixedly installed on the side of the U-shaped frame, and the frame is horizontally arranged below the horizontal side of the U-shaped frame. A transparent protective film is horizontally fixedly installed inside the frame, and a lifting plate is horizontally arranged below the frame. Two extension plates are slidably arranged on the vertical sides corresponding to the U-shaped frame. Two vertical grooves are opened on the vertical sides corresponding to the U-shaped frame. The ends of the two extension plates pass through the two vertical grooves respectively, and the ends of the two extension plates are fixedly installed on the side of the connecting plate and the side of the lifting plate respectively. The surfaces of the two extension plates are respectively slidably installed in the two vertical grooves. A T-shaped column is horizontally fixedly installed on the corresponding side of the U-shaped frame, and a sleeve block is slidably sleeved on the surface of the T-shaped column. Two rotating plates are rotatably installed on the sides corresponding to the sleeve blocks, and the other two ends of the two rotating plates are respectively rotatably installed on the opposite sides of the two extension plates.

[0015] The beneficial effects of the present invention are: Firstly, the present invention, through the arrangement of the detection component and the driving component, can make the brushes of different colors contact with the paper tape according to the lifting and lowering of the detection head when detecting the IGBT bottom guard plate, so as to draw lines of different colors on the paper tape when the IGBT bottom guard plate is concave and convex, and can timely and accurately perform corresponding processing on the IGBT bottom guard plate according to the position and color of the lines drawn on the paper tape, thereby improving the detection effect of the device; Secondly, the present invention, by placing a protective component and a driving component, can protect the IGBT bottom guard plate made of copper, thereby preventing the detection head from sliding directly on the IGBT bottom guard plate, causing scratches on the IGBT bottom guard plate made of copper and affecting use, thereby improving the use effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an IGBT bottom guard plate flatness detection device proposed by the present invention; Figure 2 This is a schematic structural diagram of an IGBT bottom guard plate flatness detection device proposed by the present invention after removing the conveyor belt; Figure 3 A schematic diagram of a U-shaped frame cross-sectional structure of an IGBT bottom guard plate flatness detection device proposed by the present invention; Figure 4 This is a schematic structural diagram of an IGBT bottom guard plate flatness detection device proposed by the present invention after removing the U-shaped frame; Figure 5 A schematic diagram of the second sliding and paper tape connection structure of an IGBT bottom guard plate flatness detection device proposed by the present invention; Figure 6 A schematic diagram of a box and its connection structure of an IGBT bottom guard plate flatness detection device proposed by the present invention; Figure 7 for Figure 6 A magnified schematic diagram of part A; Figure 8 This is a schematic diagram of the cross-sectional structure of a box of an IGBT bottom guard plate flatness detection device proposed by the present invention.

[0017] In the figure: 1, conveyor belt; 2, placing table; 3, first spring rod; 4, U-shaped frame; 5, electric telescopic rod; 6, connecting plate; 7, extension plate; 8, T-shaped column; 9, rotating plate; 10, sleeve block; 11, first electric slide; 12, second electric slide; 13, frame; 14, lifting plate; 15, connecting plate; 16, main spring rod; 17, clamp; 18, sleeve ring; 19, turntable; 20, first movable rod; 21, Box body; 22, vertical plate; 23, round roller; 24, limit column; 25, limit plate; 26, paper tape; 27, rotating rod; 28, dial plate; 29, disc; 30, side plate; 31, second movable rod; 32, horizontal plate; 33, first telescopic rod; 34, slot plate; 35, vertical column; 36, third spring rod; 37, detection block; 38, brush; 39, Y-shaped slot; 40, large gear; 41, small gear; 42, sliding column. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Please see attached Figure 1 -Attached Figure 8, an IGBT bottom guard plate flatness detection device, comprising a conveyor belt 1, and also comprising: a U-shaped frame 4, a detection component, a drive component and a placement protection component, wherein the inner sides of the two vertical sides of the U-shaped frame 4 are respectively fixedly installed on the opposite sides of the conveyor belt 1, the detection component is arranged below the horizontal side of the U-shaped frame 4, the detection component is used to detect the flatness of the TGBT bottom guard plate, the drive component is arranged on the U-shaped frame 4, the drive component is used to drive the detection component to work, the placement protection component is arranged on the conveyor belt 1 and the U-shaped frame 4, and the placement protection component is used to place the IGBT bottom guard plate and protect it during detection; As described above, when inspecting the IGBT bottom guard plate, the brushes 38 of different colors can be brought into contact with the paper tape 26 according to the lifting and lowering of the inspection head, so that when the IGBT bottom guard plate is concave and convex, lines of different colors can be drawn on the paper tape 26, making the inspection result clear and intuitive.

[0021] Please see attached Figure 1 -Attached Figure 8In a preferred embodiment, the detection assembly includes: a connecting plate 15, the connecting plate 15 is horizontally arranged below the horizontal side of the U-shaped frame 4, a main spring rod 16 and a vertical plate 22 are vertically fixedly installed at the bottom of the connecting plate 15, the fixed end of the main spring rod 16 and the telescopic rod are slidably connected by a spline, a round table detection head is installed at the end of the telescopic end of the main spring rod 16, a clamp 17 for clamping its telescopic rod is installed on the fixed end of the main spring rod 16, a box 21 is fixedly installed at the end of the vertical plate 22, a ring 18 is fixedly sleeved on the surface of the telescopic end of the main spring rod 16, the side of the box 21 is rotatably installed on the turntable 19, and the outer edge of the side of the turntable 19 away from the box 21 is rotatably installed with a first movable Rod 20, the end of the first movable rod 20 away from the turntable 19 is rotatably mounted on the collar 18, and a large gear 40 and a small gear 41 that mesh with each other are rotatably mounted inside the box 21. The side of the turntable 19 is fixedly mounted at the center of the side of the large gear 40 through a connecting shaft. The large gear 40 is a missing gear. A rotating rod 27 is rotatably mounted on the side of the box 21 away from the turntable 19. The side of the rotating rod 27 is fixedly mounted at the center of the side of the small gear 41 through a connecting shaft. There is friction between the small gear 41 and the inside of the box 21, which ensures the stability of the brush 38 in drawing lines. Two discs 29 are rotatably sleeved on the surface of the rotating rod 27. A dial plate 28 is fixedly mounted on the surface of the rotating rod 27. The dial plate 28 is located between the two Between the disks 29, side plates 30 are fixedly installed on the opposite sides of the two disks 29, and the two side plates 30 are symmetrically arranged. The dial plate 28 is located between the two side plates 30. A horizontal plate 32 is horizontally arranged above the two disks 29, and the second movable rods 31 are rotatably installed at the bottom of the two horizontal plates 32. The two second movable rods 31 are symmetrically arranged at the center, and the ends of the two second movable rods 31 are rotatably installed on the opposite sides of the two disks 29, respectively. A groove plate 34 is vertically fixedly installed on the side of the vertical plate 22, and a Y-shaped groove 39 is opened on the side of the groove plate 34. Two symmetrically arranged sliding columns 42 are slidably installed inside the Y-shaped groove 39, and two symmetrically arranged inspection rods 42 are slidably arranged on the side of the groove plate 34 The ends of the two sliding columns 42 are respectively fixedly installed on the sides of the two detection blocks 37, and the tops of the two detection blocks 37 are vertically installed with paintbrushes 38, and the two paintbrushes 38 are different in color. The tops of the two horizontal plates 32 are vertically fixedly installed with first telescopic rods 33, and the telescopic ends of the two first telescopic rods 33 are fixedly installed at the bottom of the slot plate 34. The sides away from the two detection blocks 37 are horizontally fixedly installed with third spring rods 36, and the fixed end and the telescopic end of each third spring rod 36 are connected by splines. The bottom of one end of each third spring rod 36 away from the detection block 37 is vertically fixedly installed with a column 35, and the ends of the two columns 35 are respectively fixedly installed on the tops of the two horizontal plates 32; Preferably, when the detection head passes over an uneven position, the elastic force generated by the main spring rod 16 or the supporting force generated by the IGBT bottom guard plate on the detection head will restore the detection head to a normal height, and the large gear 40 will drive the small gear 41 to rotate and reset, and further reset the brush 38 and other components, so that the uneven position of the IGBT bottom guard plate can be detected. The two brushes 38 draw different lines, such as drawing red lines in a concave position and green lines in a convex position.

[0022] Please see attached Figure 1 -Attached Figure 6 In a preferred embodiment, the driving assembly includes: a connecting plate 6, the connecting plate 6 is horizontally arranged below the horizontal side of the U-shaped frame 4, an electric telescopic rod 5 is vertically installed on the top of the horizontal side of the U-shaped frame 4, the output end of the electric telescopic rod 5 is installed on the top of the connecting plate 6, a first electric slide 11 is horizontally installed at the bottom of the connecting plate 6, a second electric slide 12 is longitudinally installed at the bottom of the output end of the first electric slide 11, and the output end of the second electric slide 12 is fixedly installed on the top of the connecting plate 15, two symmetrically arranged limit plates 25 are fixed at both ends of the side of the second electric slide 12, and the side ends of the two limit plates 25 are rotatably installed with round rollers 23, and each limit plate 25 is also rotatably installed with a limit column 24, and a paper tape 26 is wound around the two round rollers 23, and the paper tape 26 passes through the two limit columns 24, and the lower horizontal edge of the paper tape 26 is located above the slot plate 34, and a drive motor is installed on the side of the corresponding limit plate 25, and the output shaft of the drive motor is installed at the center of the side of the corresponding round roller 23; Specifically, the main spring rod 16 and the detection head can be driven to move on the protective film, so as to detect any position on the IGBT bottom guard plate.

[0023] Please see attached Figure 2 -Attached Figure 8In a preferred embodiment, the placement protection component includes: a first spring rod 3, a plurality of first spring rods 3, and the plurality of first spring rods 3 are evenly distributed on the surface of the conveyor belt 1. The fixed end and the telescopic end of each first spring rod 3 are connected by spline sliding. The telescopic end of each first spring rod 3 is fixedly installed with a placement table 2. A frame 13 is horizontally fixedly installed on the side of the U-shaped frame 4. The frame 13 is horizontally arranged below the horizontal side of the U-shaped frame 4. A transparent protective film is horizontally fixedly installed inside the frame 13. A lifting plate 14 is horizontally arranged below the frame 13. The U-shaped frame 4 is fixedly installed with a transparent protective film. Two extension plates 7 are provided for vertical sliding, and two vertical grooves are provided corresponding to the vertical sides of the U-shaped frame 4. The ends of the two extension plates 7 pass through the two vertical grooves respectively, and the ends of the two extension plates 7 are fixedly installed on the side of the connecting plate 6 and the side of the lifting plate 14 respectively. The surfaces of the two extension plates 7 are respectively slidably installed inside the two vertical grooves. A T-shaped column 8 is fixedly installed horizontally on the corresponding side of the U-shaped frame 4, and a sleeve block 10 is slidably sleeved on the surface of the T-shaped column 8. Two rotating plates 9 are rotatably installed on the side corresponding to the sleeve block 10, and the other two ends of the two rotating plates 9 are respectively rotatably installed on the opposite sides of the two extension plates 7; Furthermore, the movement of the main spring rod 16 drives the detection head to move on the protective film, and the detection head will not directly contact the IGBT bottom guard plate made of copper, thereby avoiding scratches on the IGBT bottom guard plate made of copper.

[0024] The working principle of the present invention is as follows: first, the IGBT bottom guard plate is placed on the placement table 2. It should be noted that after the IGBT bottom guard plate is placed, it is flush with the placement table 2. Then, the conveyor belt 1 is started to drive the placement plate and the IGBT bottom guard plate to move to the bottom of the U-shaped frame 4 through the first spring rod 3. Then, the electric telescopic rod 5 is started to drive the connecting plate 6 to move downward, and the connecting plate 6 moves downward to move the first electric slide 11, the second electric slide 12 and the extension plate 7 connected thereto, and the extension plate 7 moves to drive the rotating plate 9 connected thereto to move, and the rotating plate 9 moves to drive the sleeve block 10 to move, and the sleeve block 10 moves to drive another rotating plate 9 and the extension plate 7 to move, and the extension plate 7 moves to drive the lifting plate 14 to move downward, and the lifting plate 14 moves downward to drive the placement table 2 located above it to move upward, so as to achieve contact between the placement table 2 and the transparent protective film on the frame 13, and the second electric slide 12 moves to drive the connecting plate 15 to move downward, and the connecting plate 15 moves downward to drive the main spring rod 16 and the vertical plate 22 to move downward, until the detection head at the end of the main spring rod 16 contacts the protective film, it should be noted that the placement table 2 and the main spring rod 16 move synchronously, so as to achieve the attachment of the protective film to the IGBT bottom guard plate, and then release the clamp 17 to fix the telescopic end of the main spring rod 16; Then, the second electric slide 12 drives the connecting plate 15, the main spring rod 16 and the vertical plate 22 to move horizontally. The movement of the main spring rod 16 drives the detection head to move on the protective film. The detection head will not directly contact the copper IGBT bottom guard plate, thereby avoiding scratches on the copper IGBT bottom guard plate. When the IGBT bottom guard plate is uneven and concave and convex, the detection head will move up and down. The up and down movement of the detection head drives the telescopic end of the main spring rod 16 to move up and down. The up and down movement of the telescopic end of the main spring rod 16 drives the ring 18 to move up and down. The up and down movement of the ring 18 drives the first movable rod 20 to move. The movement of the first movable rod 20 drives The turntable 19 rotates. It should be noted that when the telescopic end of the main spring rod 16 moves upward and downward, the turntable 19 rotates in different directions. The rotation of the turntable 19 drives the large gear 40 to rotate, and the rotation of the large gear 40 drives the small gear 41 to accelerate the rotation. Since the large gear 40 is designed as a gearless design, the small gear 41 will rotate intermittently, and the rotation of the small gear 41 drives the rotating rod 27 to rotate, and the rotating rod 27 rotates the dial plate 28 to move. Since the turntable 19 rotates in different directions, the rotating rod 27 and the dial plate 28 also rotate in different directions. When the dial plate 28 rotates, it will drive the corresponding side plate 30 to move, and the movement of the side plate 30 drives the corresponding disk 29 to rotate. 29 rotates to drive the second movable rod 31 to move, the second movable rod 31 moves the horizontal plate 32 to move upward, the horizontal plate 32 moves upward to drive the column 35 to move upward, the column 35 moves upward to drive the third spring rod 36, the detection block 37 and the brush 38 to move upward, the detection block 37 moves upward to drive the slide column 42 to move upward, when the slide column 42 moves to the hypotenuse of the Y-shaped groove 39, the detection block 37 will move toward the center of the Y-shaped groove 39, and the third spring rod 36 will generate a pulling force, because the pinion 41 can only rotate a specified angle, further, the brush 38 can be brought into contact with the paper tape 26 and draw a line on the paper tape 26. In summary, the two brushes 38 The line drawing paths are the same, so that lines of different colors can be drawn on the same path on the paper tape 26, which is convenient for the staff to intuitively judge the flatness of the IGBT bottom guard plate. When the detection head passes over the uneven position, the elastic force generated by the main spring rod 16 or the supporting force generated by the IGBT bottom guard plate on the detection head will restore the detection head to a normal height, and the large gear 40 will drive the small gear 41 to rotate and reset, and further reset the brush 38 and other components, so that the uneven position of the IGBT bottom guard plate can be detected. The two brushes 38 draw different lines, such as drawing red lines at the concave position and drawing green lines at the convex position; When it is necessary to inspect other positions of the IGBT bottom guard plate, it is only necessary to drive the second electric slide 12 and the connecting plate 15 and the components thereon to move horizontally through the first electric slide 11, and drive the round roller 23 to rotate through the driving motor, replace the unused paper tape 26, and repeat the above steps to inspect other positions of the IGBT bottom guard plate. The inspection is convenient and fast, and the inspection result is intuitively displayed. Finally, after the inspection of the IGBT bottom guard plate is completed, the inspection head is moved to the edge of the placement table 2 to reset the telescopic end of the main spring rod 16, and then the telescopic end of the main spring rod 16 is clamped by the clamp 17, and then the connecting plate 6 and its connecting parts are driven upward by the electric telescopic rod 5. In summary, the IGBT bottom guard plate can be inspected intuitively and safely by reciprocating in sequence, thereby improving the use effect of the equipment.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An IGBT bottom guard plate flatness detection device, comprising a conveyor belt (1), It is characterized in that Also includes: A U-shaped frame (4), wherein the inner sides of two vertical sides of the U-shaped frame (4) are respectively fixedly mounted on opposite sides of the conveyor belt (1); A detection component, the detection component is arranged below the horizontal side of the U-shaped frame (4), and the detection component is used to detect the flatness of the TGBT bottom guard plate; A driving component, the driving component is arranged on the U-shaped frame (4), and the driving component is used to drive the detection component to work; A placement protection component is provided on the conveyor belt (1) and the U-shaped frame (4), and is used for placing the IGBT bottom guard plate and protecting it during detection.

2. An IGBT bottom guard plate flatness detection device according to claim 1, It is characterized in that The detection assembly comprises: a connecting plate (15), the connecting plate (15) being horizontally arranged below the horizontal side of the U-shaped frame (4), a main spring rod (16) and a vertical plate (22) being vertically fixedly installed at the bottom of the connecting plate (15), the fixed end of the main spring rod (16) and the telescopic rod being slidably connected via a spline, a round table-type detection head being installed at the end of the telescopic end of the main spring rod (16), a clamp (17) for clamping the telescopic rod being installed on the fixed end of the main spring rod (16), a box body (21) being fixedly installed at the end of the vertical plate (22), and a collar (18) being fixedly sleeved on the surface of the telescopic end of the main spring rod (16).

3. An IGBT bottom guard plate flatness detection device according to claim 2, It is characterized in that The side of the box (21) is rotatably mounted on the turntable (19); a first movable rod (20) is rotatably mounted on the outer edge of the side of the turntable (19) away from the box (21); the end of the first movable rod (20) away from the turntable (19) is rotatably mounted on the collar (18); a large gear (40) and a small gear (41) that mesh with each other are rotatably mounted inside the box (21); the side of the turntable (19) is fixedly mounted at the center of the side of the large gear (40) via a connecting shaft; the large gear (40) is a missing gear; a rotating rod (27) is rotatably mounted on the side of the box (21) away from the turntable (19); the side of the rotating rod (27) is fixedly mounted at the center of the side of the small gear (41) via a connecting shaft; and there is friction between the small gear (41) and the inside of the box (21).

4. The IGBT bottom guard plate flatness detection device according to claim 3, It is characterized in that Two disks (29) are rotatably sleeved on the surface of the rotating rod (27), a dial plate (28) is fixedly mounted on the surface of the rotating rod (27), the dial plate (28) is located between the two disks (29), side plates (30) are fixedly mounted on opposite sides of the two disks (29), the two side plates (30) are centrally symmetrically arranged, the dial plate (28) is located between the two side plates (30), a horizontal plate (32) is horizontally arranged above the two disks (29), and second movable rods (31) are rotatably mounted on the bottoms of the two horizontal plates (32), the two second movable rods (31) are centrally symmetrically arranged, and the ends of the two second movable rods (31) are rotatably mounted on opposite sides of the two disks (29), respectively.

5. The IGBT bottom guard plate flatness detection device according to claim 4, It is characterized in that A slot plate (34) is vertically fixedly mounted on the side of the vertical plate (22), a Y-shaped slot (39) is provided on the side of the slot plate (34), two symmetrically arranged sliding columns (42) are slidably mounted inside the Y-shaped slot (39), two symmetrically arranged detection blocks (37) are slidably mounted on the side of the slot plate (34), the ends of the two sliding columns (42) are respectively fixedly mounted on the sides of the two detection blocks (37), and a paint brush (38) is vertically mounted on the top of the two detection blocks (37), and the two paint brushes (38) are of different colors.

6. The IGBT bottom guard plate flatness detection device according to claim 5, It is characterized in that A first telescopic rod (33) is vertically fixedly installed on the top of the two horizontal plates (32), and the telescopic ends of the two first telescopic rods (33) are fixedly installed on the bottom of the slot plate (34). A third spring rod (36) is horizontally fixedly installed on the side away from the two detection blocks (37), and the fixed end and the telescopic end of each third spring rod (36) are connected by a spline. A column (35) is vertically fixedly installed on the bottom of one end of each third spring rod (36) away from the detection block (37), and the ends of the two columns (35) are respectively fixedly installed on the tops of the two horizontal plates (32).

7. The IGBT bottom guard plate flatness detection device according to claim 6, It is characterized in that The driving assembly comprises: a connecting plate (6), the connecting plate (6) being horizontally arranged below the horizontal side of the U-shaped frame (4), an electric telescopic rod (5) being vertically installed on the top of the horizontal side of the U-shaped frame (4), an output end of the electric telescopic rod (5) being installed on the top of the connecting plate (6), a first electric slide (11) being horizontally installed on the bottom of the connecting plate (6), a second electric slide (12) being longitudinally installed on the bottom of the output end of the first electric slide (11), and an output end of the second electric slide (12) being fixedly installed on the top of the connecting plate (15).

8. The IGBT bottom guard plate flatness detection device according to claim 7, It is characterized in that Two symmetrically arranged limit plates (25) are fixed at both ends of the side of the second electric slide (12), and round rollers (23) are rotatably mounted on the side ends of the two limit plates (25). A limit column (24) is also rotatably mounted on each of the limit plates (25). Paper tapes (26) are wound around the two round rollers (23), and the paper tapes (26) pass through the two limit columns (24). The lower horizontal edge of the paper tape (26) is located above the groove plate (34). A driving motor is mounted on the side of the corresponding limit plate (25), and the output shaft of the driving motor is mounted at the center of the side of the corresponding round roller (23).

9. The IGBT bottom guard plate flatness detection device according to claim 8, It is characterized in that The placement protection component comprises: a first spring rod (3), a plurality of the first spring rods (3), the plurality of the first spring rods (3) being evenly distributed on the surface of the conveyor belt (1), a fixed end and a telescopic end of each first spring rod (3) being slidably connected via a spline, and a placement platform (2) being fixedly mounted on the telescopic end of each first spring rod (3).

10. The IGBT bottom guard plate flatness detection device according to claim 9, It is characterized in that A frame (13) is fixedly installed horizontally on the side of the U-shaped frame (4). The frame (13) is horizontally arranged below the horizontal side of the U-shaped frame (4). A transparent protective film is fixedly installed horizontally inside the frame (13). A lifting plate (14) is horizontally arranged below the frame (13). Two extension plates (7) are slidably installed on the corresponding vertical sides of the U-shaped frame (4). Two vertical grooves are opened on the corresponding vertical sides of the U-shaped frame (4). The ends of the two extension plates (7) pass through the two vertical grooves respectively, and the ends of the two extension plates (7) are fixedly installed on the side of the connecting plate (6) and the side of the lifting plate (14). The surfaces of the two extension plates (7) are slidably installed in the two vertical grooves respectively. A T-shaped column (8) is fixedly installed horizontally on the corresponding side of the U-shaped frame (4). A sleeve block (10) is slidably sleeved on the surface of the T-shaped column (8). Two rotating plates (9) are rotatably installed on the corresponding sides of the sleeve block (10). The other two ends of the two rotating plates (9) are rotatably installed on the opposite sides of the two extension plates (7).

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