Elastic contact type silicon carbide field effect transistor high-heat-dissipation installation tool

Abstract

The invention relates to the technical field of semiconductors, and discloses an elastic contact type silicon carbide field effect transistor high-heat-dissipation installation tool which comprises a machine body, and the upper surface of the machine body is fixedly connected with a suction nozzle assembly. The bottom end of the central column body is fixedly connected with the upper surface of the machine body, a rotating ring plate is rotatably connected to the outer surface of the circumference of the central column body, a sliding frame is slidably connected to the rotating ring plate through a first sliding rail arranged on the upper surface of the rotating ring plate, and a sliding rod is slidably connected to the inner wall of the sliding frame. The elastic contact type silicon carbide field-effect tube high-heat-dissipation mounting tool can effectively solve the problems that in the prior art, in the process of mounting batch silicon carbide field-effect tubes, after a suction nozzle completes mounting of the silicon carbide field-effect tubes on a single circuit board, the suction nozzle needs to stop and wait for a certain time, the mounting time of the silicon carbide field-effect tubes is increased, and the mounting efficiency of the silicon carbide field-effect tubes is reduced. And the surface mounting efficiency of the silicon carbide field effect transistor is reduced.

Description

Technical Field

[0001] The present invention relates to the field of semiconductor technology, and particularly to a high-heat-dissipation mounting tool for an elastic-contact silicon carbide field-effect transistor. Background Art

[0002] A silicon carbide field-effect transistor is a semiconductor field-effect transistor based on silicon carbide material. The silicon carbide field-effect transistor combines the excellent properties of silicon carbide material and the structural advantages of the field-effect transistor, and exhibits excellent performance in applications such as high temperature, high frequency, high voltage, and high power density. During the installation process of the silicon carbide field-effect transistor, a mounter is usually used to mount multiple silicon carbide field-effect transistors at specified positions on a PCB circuit board, ensuring that the mounting accuracy and pressure meet the device specifications, and then welding is performed through a reflow soldering furnace, controlling the temperature curve (such as preheating, holding, peak, and cooling stages) to avoid device damage caused by thermal shock, so as to meet the requirements of the circuit for high power density, high-frequency performance, and adaptability to harsh environments.

[0003] Currently, during the mounting process of silicon carbide field-effect transistors, the circuit board is first fixed on a fixture, and the circuit board is transported to the mounting position by moving the fixture. Then, the nozzle is controlled to mount multiple silicon carbide field-effect transistors at specified positions on the circuit board. Finally, the fixture is moved again to transport the circuit board to the dismounting position, and the circuit board is manually removed from the fixture and a new circuit board is installed. However, during the mounting process of a batch of silicon carbide field-effect transistors, after the nozzle completes the mounting of the silicon carbide field-effect transistors on each circuit board, the nozzle needs to stop for a certain period of time until the next circuit board returns to the mounting position again, thereby increasing the mounting time of the silicon carbide field-effect transistors and reducing the mounting efficiency of the silicon carbide field-effect transistors. Summary of the Invention

[0004] Aiming at the above-mentioned shortcomings of the prior art, the present invention provides a high-heat-dissipation mounting tool for an elastic-contact silicon carbide field-effect transistor, which can effectively solve the problem in the prior art that during the mounting process of a batch of silicon carbide field-effect transistors, after the nozzle completes the mounting of the silicon carbide field-effect transistors on a single circuit board, the nozzle needs to stop for a certain period of time, increasing the mounting time of the silicon carbide field-effect transistors and reducing the mounting efficiency of the silicon carbide field-effect transistors.

[0005] To achieve the above object, the present invention is realized through the following technical solutions:

[0006] The present invention provides a high-heat-dissipation mounting tool for an elastic-contact silicon carbide field-effect transistor, including:

[0007] A body, on the upper surface of which a nozzle assembly is fixedly connected;

[0008] A central cylinder, the bottom end of the central cylinder is fixedly connected to the upper surface of the machine body, a rotating ring plate is rotatably connected to the circumferential outer surface of the central cylinder, the rotating ring plate is slidably connected with a sliding frame through a first slide rail arranged on its upper surface, a slide bar is slidably connected to the inner wall of the sliding frame, the slide bar is fixedly connected with a clamping strip through a first right-angle bar arranged at its bottom, a limiting strip is slidably connected to the upper surface of the rotating ring plate, and a rectangular hole is formed in the upper surface of the rotating ring plate;

[0009] Among them, during the process of the rotating ring plate rotating around the axis of the central cylinder, it first drives the two limiting strips to approach the circuit board, so that the length direction of the circuit board is along the radial direction of the rotating ring plate, drives the two clamping strips to approach the circuit board, so as to clamp and limit the circuit board. After the field effect transistor is mounted, continue to rotate the rotating ring plate, and then drive the two clamping strips and the circuit board to move towards the rectangular hole, so that the circuit board is located above the rectangular hole, and finally drive the two clamping strips to move away from each other to release the limit of the clamping strips on the circuit board, so that the circuit board drops into the interior of the rectangular hole.

[0010] Further, a centripetal rod is fixedly connected to one side of the sliding frame close to the central cylinder, a second slide rail is fixedly connected to the top end of the central cylinder, and one end of the centripetal rod close to the second slide rail is slidably connected to the second slide rail;

[0011] Among them, the second slide rail includes a near-center slide rail two, a far-center slide rail two and a flat rail two, and the near-center slide rail two is connected to the far-center slide rail two through the flat rail two.

[0012] Further, two slide bars are provided and are symmetrically distributed left and right along the center of the sliding frame. A strong spring is fixedly connected between the two slide bars. The top of the slide bar is rotatably connected with a push block. A push folding bar is slidably arranged on the top of the sliding frame. One side of the push folding bar away from the limiting strip is fixedly connected with a second right-angle bar. A third slide rail is slidably connected to the upper surface of the rotating ring plate. The bottom end of the second right-angle bar is slidably connected to the third slide rail.

[0013] Further, a seventh slide rail is fixedly connected to the top of the sliding frame. Seventh sliders are fixedly connected to both ends of the push folding bar. The push folding bar is slidably connected to the seventh slide rail through the seventh sliders.

[0014] Further, a chute is formed in the upper surface of the rotating ring plate. The third slide rail is slidably connected to the rotating ring plate along the chute. One end of the third slide rail close to the central cylinder is fixedly connected with a V-shaped rod. A fourth slide rail is fixedly connected to the top end of the central cylinder. One end of the V-shaped rod close to the fourth slide rail is slidably connected to the fourth slide rail;

[0015] Among them, the fourth slide rail includes a near-center slide rail four, a far-center slide rail four and a flat rail four, and the near-center slide rail four is connected to the far-center slide rail four through the flat rail four.

[0016] Furthermore, a sixth slide rail is fixedly connected to the upper surface of the rotating ring plate. A sixth slider is fixedly connected to one side of the limiting strip close to the sixth slide rail. The sixth slider is slidably connected to the sixth slide rail. A moving block is fixedly connected to one side of the limiting strip close to the sixth slide rail. One end of the moving block away from the limiting strip is rotatably connected to a push-pull rod. A rotating block is rotatably connected to the lower surface of the rotating ring plate. A fifth slide rail is fixedly connected to the circumferential outer surface of the rotating block. The bottom end of the push-pull rod penetrates through the rotating ring plate and is slidably connected to the fifth slide rail;

[0017] Among them, the fifth slide rail includes a proximal-center slide rail five, a distal-center slide rail five, and a flat rail five. The proximal-center slide rail five is connected to the distal-center slide rail five through the flat rail five.

[0018] Furthermore, a toothed block is fixedly connected to the bottom end of the rotating block. Teeth meshing with the toothed block are fixedly connected to the circumferential outer surface of the central column body. A clamping strip is fixedly connected to the bottom of the fifth slide rail. An arc-shaped strip is fixedly connected to the circumferential outer surface of the central column body.

[0019] The technical solution provided by the present invention has the following beneficial effects compared with the prior art:

[0020] In the present invention, by controlling the rotation of the rotating ring plate around the axis of the central column, the rotating ring plate drives the rotating block to rotate around the central column. The rotating block drives the tooth block to engage with the tooth teeth, so that the rotating block drives the fifth slide rail to rotate around the axis of the rotating block. The fifth slide rail pushes two limiting strips to move towards each other through the push rod and the moving block, and the two limiting strips initially push and align the circuit board on the rotating ring plate (so that the length direction of the circuit board is consistent with the length direction of the limiting strips); the rotating ring plate drives the V-shaped rod to slide along the fourth slide rail. Under the limiting action of the fourth slide rail, the third slide rail slides towards the central column along the chute. The two third slide rails push two second right-angled rods and two pushing folding strips to move towards each other, releasing the limit of the pushing folding strip on the push block. The strong spring pulls the two slide rods to move towards each other, and the two slide rods drive the two clamping strips to move towards each other. The two clamping strips clamp and fix the circuit board between the two limiting strips; the rotating ring plate drives the centripetal rod to slide along the second slide rail. Under the limiting action of the second slide rail, the sliding frame slides towards the rectangular hole along the first slide rail. The sliding frame drives the circuit board to move towards the rectangular hole. After the circuit board moves to directly above the rectangular hole, under the limiting action of the fourth slide rail, the third slide rail slides towards the central column again. The two third slide rails pull two second right-angled rods and two pushing folding strips to move away from each other. The two pushing folding strips push the two slide rods to move away from each other through the push block. The two slide rods drive the two clamping strips to move away from each other, releasing the clamping and fixing of the two clamping strips on the circuit board. Under the action of gravity, the circuit board drops into the interior of the rectangular hole and is conveyed to the next working station; it avoids manual installation and disassembly of the circuit board on the rotating ring plate by workers, thereby shortening the downtime waiting time of the nozzle assembly, further shortening the mounting time of the silicon carbide field effect transistor, and improving the mounting efficiency of the silicon carbide field effect transistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the rotating ring plate in an embodiment of the present invention;

[0024] Figure 3 It is a top view structural schematic diagram of the central column in an embodiment of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the centripetal rod in an embodiment of the present invention;

[0026] Figure 5 Schematic structural diagram of the first slide rail of the embodiment of the present invention;

[0027] Figure 6 Schematic structural diagram of the sliding frame of the embodiment of the present invention;

[0028] Figure 7 Schematic structural diagram of the limiting strip of the embodiment of the present invention;

[0029] Figure 8 Schematic structural diagram of the fifth slide rail of the embodiment of the present invention;

[0030] Figure 9 Schematic structural diagram of the tooth block of the embodiment of the present invention;

[0031] Figure 10 Top view structural diagram of the tooth of the embodiment of the present invention.

[0032] The reference numerals in the figure respectively represent: 1, machine body; 11, suction nozzle assembly; 2, central column; 21, rotating ring plate; 22, sliding frame; 221, first slide rail; 222, centripetal rod; 223, second slide rail; 2231, inner slide rail two; 2232, outer slide rail two; 2233, flat rail two; 23, slide bar; 231, strong spring; 232, push block; 233, push folding bar; 234, second right-angle bar; 235, third slide rail; 2331, seventh slider; 2332, seventh slide rail; 2351, chute; 2352, V-shaped rod; 2353, fourth slide rail; 23531, inner slide rail four; 23532, outer slide rail four; 23533, flat rail four; 24, clamping bar; 241, first right-angle bar; 25, limiting strip; 251, sixth slider; 252, sixth slide rail; 253, moving block; 254, push-pull rod; 255, rotating block; 256, fifth slide rail; 2561, inner slide rail five; 2562, outer slide rail five; 2563, flat rail five; 257, tooth block; 2571, tooth; 258, clamping strip; 2581, arc-shaped strip; 26, rectangular hole. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] The present invention will be further described below with reference to the embodiments.

[0035] Embodiment:

[0036] Please refer to Figures 1-10 , the present invention provides a technical solution: an elastic contact type high heat dissipation mounting tool for a silicon carbide field effect transistor, including:

[0037] A body 1, on the upper surface of which a suction nozzle assembly 11 is fixedly connected;

[0038] A central cylinder 2, the bottom end of the central cylinder 2 is fixedly connected to the upper surface of the body 1, a rotating ring plate 21 is rotatably connected to the circumferential outer surface of the central cylinder 2, the rotating ring plate 21 is slidably connected with a sliding frame 22 through a first slide rail 221 provided on its upper surface, a slide bar 23 is slidably connected to the inner wall of the sliding frame 22, the slide bar 23 is fixedly connected with a clamping strip 24 through a first right-angle bar 241 provided at its bottom, a limiting strip 25 is slidably connected to the upper surface of the rotating ring plate 21, and a rectangular hole 26 is opened on the upper surface of the rotating ring plate 21;

[0039] Among them, during the process of the rotating ring plate 21 rotating around the axis of the central cylinder 2, first drive the two limiting strips 25 to approach the circuit board, so that the length direction of the circuit board is along the radial direction of the rotating ring plate 21, drive the two clamping strips 24 to approach the circuit board, so as to clamp and limit the circuit board. After the field effect transistor is mounted, continue to rotate the rotating ring plate 21, and then drive the two clamping strips 24 and the circuit board to move towards the rectangular hole 26, so that the circuit board is located above the rectangular hole 26. Finally, drive the two clamping strips 24 to move away from each other, so as to release the limit of the clamping strip 24 on the circuit board, and make the circuit board fall into the interior of the rectangular hole 26.

[0040] One side of the sliding frame 22 close to the central cylinder 2 is fixedly connected with a centripetal rod 222, the top end of the central cylinder 2 is fixedly connected with a second slide rail 223, and one end of the centripetal rod 222 close to the second slide rail 223 is slidably connected with the second slide rail 223;

[0041] Among them, the second slide rail 223 includes a near-center slide rail two 2231, a far-center slide rail two 2232 and a flat rail two 2233, and the near-center slide rail two 2231 is connected to the far-center slide rail two 2232 through the flat rail two 2233.

[0042] There are two slide bars 23 which are symmetrically distributed left and right along the center of the sliding frame 22. A strong spring 231 is fixedly connected between the two slide bars 23. The top of the slide bar 23 is rotatably connected with a push block 232. A push folding strip 233 is slidably arranged on the top of the sliding frame 22. One side of the push folding strip 233 away from the limiting strip 25 is fixedly connected with a second right-angle bar 234. A third slide rail 235 is slidably connected to the upper surface of the rotating ring plate 21. The bottom end of the second right-angle bar 234 is slidably connected with the third slide rail 235.

[0043] The top of the sliding frame 22 is fixedly connected with a seventh slide rail 2332. Both ends of the pushing strip 233 are fixedly connected with seventh sliders 2331. The pushing strip 233 is slidably connected with the seventh slide rail 2332 through the seventh sliders 2331.

[0044] A chute 2351 is formed on the upper surface of the rotating ring plate 21. The third slide rail 235 is slidably connected with the rotating ring plate 21 along the chute 2351. One end of the third slide rail 235 close to the central column 2 is fixedly connected with a V-shaped rod 2352. The top end of the central column 2 is fixedly connected with a fourth slide rail 2353. One end of the V-shaped rod 2352 close to the fourth slide rail 2353 is slidably connected with the fourth slide rail 2353.

[0045] Among them, the fourth slide rail 2353 includes a centripetal slide rail four 23531, a centrifugal slide rail four 23532 and a flat rail four 23533. The centripetal slide rail four 23531 is communicated with the centrifugal slide rail four 23532 through the flat rail four 23533.

[0046] The upper surface of the rotating ring plate 21 is fixedly connected with a sixth slide rail 252. One side of the limiting strip 25 close to the sixth slide rail 252 is fixedly connected with a sixth slider 251. The sixth slider 251 is slidably connected with the sixth slide rail 252. One side of the limiting strip 25 close to the sixth slide rail 252 is fixedly connected with a moving block 253. One end of the moving block 253 away from the limiting strip 25 is rotatably connected with a push-pull rod 254. The lower surface of the rotating ring plate 21 is rotatably connected with a rotating block 255. The circumferential outer surface of the rotating block 255 is fixedly connected with a fifth slide rail 256. The bottom end of the push-pull rod 254 penetrates through the rotating ring plate 21 and is slidably connected with the fifth slide rail 256.

[0047] Among them, the fifth slide rail 256 includes a centripetal slide rail five 2561, a centrifugal slide rail five 2562 and a flat rail five 2563. The centripetal slide rail five 2561 is communicated with the centrifugal slide rail five 2562 through the flat rail five 2563.

[0048] The bottom end of the rotating block 255 is fixedly connected with a toothed block 257. The circumferential outer surface of the central column 2 is fixedly connected with a tooth 2571 meshing with the toothed block 257. The bottom of the fifth slide rail 256 is fixedly connected with a clamping strip 258. The circumferential outer surface of the central column 2 is fixedly connected with an arc strip 2581.

[0049] The initial alignment process of the circuit board:

[0050] In practical applications, by placing the circuit board between the two limiting strips 25 and driving the rotating ring plate 21 to rotate around the axis of the central column 2 by means of the driving component, the rotating rotating ring plate 21 drives the rotating block 255 on its lower surface to rotate around the axis of the central column 2, as Figure 9 and Figure 10As shown, the rotating rotating block 255 drives the tooth block 257 at its bottom end to rotate along the tooth 2571. Under the meshing action of the tooth block 257 and the tooth 2571, while the rotating block 255 revolves around the central cylinder 2, the rotating block 255 rotates around its own axis. After the rotating block 255 rotates 90 degrees around its own axis, the tooth block 257 separates from the tooth 2571. At this time, the rotating block 255 drives the latch 258 on its circumferential outer surface to contact the arc-shaped strip 2581, so that the inner side of the latch 258 slides along the outer side of the arc-shaped strip 2581. Under the limiting action of the latch 258 and the arc-shaped strip 2581, the rotation angle of the rotating block 255 is restricted (the rotating block 255 cannot rotate by itself).

[0051] As Figure 7 and Figure 8 As shown, during the process of the rotating block 255 rotating around its own axis, the rotating block 255 drives the fifth slide rail 256 on its circumferential outer surface to rotate around the axis of the rotating block 255, so that the bottom ends of the two push rods 254 slide on the eccentric slide rail five 2562, the flat rail five 2563 and the centripetal slide rail five 2561 in sequence. Under the limiting action of the fifth slide rail 256, the rotating fifth slide rail 256 pushes the two push rods 254 and the two moving blocks 253 to move towards each other. Under the limiting action of the sixth slider 251 and the sixth slide rail 252, the two moving blocks 253 drive the two limiting strips 25 to move towards each other along the length direction of the sixth slide rail 252. The two limiting strips 25 initially push and align the circuit board on the rotating ring plate 21 (so that the length direction of the circuit board is consistent with the length direction of the limiting strips 25).

[0052] The clamping and fixing process of the circuit board:

[0053] In practical applications, as Figure 2 and Figure 3As shown, the rotating rotating ring plate 21 drives the third slide rail 235 on its upper surface to rotate around the axis of the central column 2, and the rotating third slide rail 235 drives the V-shaped rod 2352 at one end thereof to slide along the fourth slide rail 2353, so that the V-shaped rod 2352 slides along the fourth telecentric slide rail 23532, the fourth flat rail 23533 and the fourth proximal slide rail 23531 in sequence. Under the limiting action of the fourth slide rail 2353, the two third slide rails 235 slide along the slide groove 2351 toward the central column 2, and the two sliding third slide rails 235 push the two second right-angle rods 234 to move toward each other through their inclined ends. Under the limiting action of 331 and the seventh slide rail 2332, the two second right-angle rods 234 push the two push folding bars 233 to move toward each other along the length direction of the seventh slide rail 2332, releasing the limiting action of the push folding bar 233 on the push block 232, and under the elastic action of the strong spring 231 itself, the strong spring 231 pulls the two slide bars 23 to move toward each other along the inner wall of the sliding frame 22, and the two slide bars 23 drive the two clamping bars 24 to move toward each other through the first right-angle rod 241 at the bottom thereof, and under the elastic action of the strong spring 231 itself, the two clamping bars 24 clamp and fix the circuit board between the two limiting bars 25.

[0054] Automatic receiving process of circuit boards:

[0055] In practical applications, such as Figure 2 As shown, the rotating rotating ring plate 21 drives the fixed circuit board to move to the bottom of the suction nozzle assembly 11, and the suction nozzle assembly 11 is controlled to mount multiple silicon carbide field effect transistors to the specified positions on the circuit board. After the field effect transistors are mounted, the rotating ring plate 21 continues to rotate, and the rotating ring plate 21 drives the rotating block 255 to rotate around the axis of the central column 2. The rotating block 255 drives the clamping strip 258 to slide along the arc strip 2581 for a certain distance, and the clamping strip 258 separates from the arc strip 2581, releasing the rotation restriction of the rotating block 255. At this time, the rotating block 255 drives the tooth block 257 to engage with the tooth 2571, and the rotating block 255 rotates ninety degrees around its own axis again. The rotating block 255 drives the fifth slide rail 256 to rotate ninety degrees again. The fifth slide rail 256 pulls the two push-pull rods 254 to move away from each other. The two push-pull rods 254 drive the two limit bars 25 to move away from each other along the sixth slide rail 252 through the moving block 253.

[0056] The rotating ring plate 21 drives the sliding frame 22 on its upper surface to rotate around the axis of the central column 2. The sliding frame 22 drives the centripetal rod 222 on one side to rotate around the axis of the central column 2, causing the centripetal rod 222 to slide along the inner near-center slide rail 2231, the flat rail 2233, and the outer near-center slide rail 2232 in sequence. Under the limiting action of the second slide rail 223, the sliding frame 22 slides along the first slide rail 221 towards the rectangular hole 26. The sliding frame 22 drives the circuit board to move towards the rectangular hole 26 through two clamping strips 24. After the circuit board moves to directly above the rectangular hole 26, the rotating ring plate 21 drives one end of the V-shaped rod 2352 to slide along the inner near-center slide rail 23531 towards the flat rail 23533. Under the limiting action of the fourth slide rail 2353, the two third slide rails 235 slide towards the central column 2 again along the slide groove 2351. The two third slide rails 235 pull the two second right-angle rods 234 and the two pushing folding strips 233 to move away from each other along the seventh slide rail 2332 through their inclined ends. The two pushing folding strips 233 push the push block 232 and the two sliding rods 23 to move away from each other through their inclined ends. The two sliding rods 23 drive the two clamping strips 24 to move away from each other to release the clamping and fixing of the circuit board by the two clamping strips 24. Under the action of gravity, the circuit board drops into the interior of the rectangular hole 26 and is conveyed to the next working station for subsequent welding treatment of the circuit board and the silicon carbide field effect transistor.

[0057] In summary, by adopting the clamping strip 24, the present application has the following advantages:

[0058] Advantage 1: By controlling the engagement of the tooth block 257 with the tooth 2571, the rotating block 255 and the fifth slide rail 256 are driven to rotate. By controlling the engagement of the clamping strip 258 with the arc-shaped strip 2581, the rotation of the rotating block 255 and the fifth slide rail 256 is limited. Further, the position states of the two limiting strips 25 are adjusted through the fifth slide rail 256. When placing the circuit board, the two limiting strips 25 are in an open state. After placing the circuit board, the two limiting strips 25 start to approach each other. Under the squeezing and pushing action of the two limiting strips 25, the two limiting strips 25 adjust the placement angle of the circuit board until the length direction of the circuit board is along the radial direction of the ring plate 21, thereby initially pushing and aligning the circuit board (making the length direction of the circuit board consistent with the length direction of the limiting strip 25).

[0059] Advantage 2: By controlling the sliding of the pushing folding strip 233 along the seventh slide rail 2332, when the two pushing folding strips 233 approach each other, the limit on the push block 232 is released. Under the self-elastic action of the two strong springs 231, the two strong springs 231 pull the two sliding rods 23 to approach each other along the inner wall of the sliding frame 22. The two sliding rods 23 drive the two clamping strips 24 to clamp on both sides of the circuit board. Under the elastic clamping action of the clamping strip 24, the two clamping strips 24 can clamp circuit boards of different lengths, increasing the compatibility of the overall equipment.

[0060] Advantage 3: By controlling the sliding of the V-shaped rod 2352 along the fourth slide rail 2353 and the sliding of the centripetal rod 222 along the second slide rail 223, under the limiting effect of the second slide rail 223, after the nozzle assembly 11 finishes mounting the silicon carbide field effect transistor, the second slide rail 223 drives the sliding frame 22 to slide along the first slide rail 221 towards the rectangular hole 26 through the centripetal rod 222. And under the limiting effect of the fourth slide rail 2353, the fourth slide rail 2353 controls the positions of the two third slide rails 235 on the rotating ring plate 21 to be fixed through the V-shaped rod 2352. The sliding sliding frame 22 drives the bottoms of the two second right-angle rods 234 to always slide along the horizontal ends of the third slide rails 235. Under the limiting effect of the third slide rails 235, the two second right-angle rods 234 and the two pushing folding strips 233 are disengaged from the limiting of the push block 232, so as to ensure that the two clamping strips 24 always hold the circuit board in a clamped state. Furthermore, the sliding frame 22 drives the circuit board to move above the rectangular hole 26 through the clamping strips 24. And under the limiting effect of the fourth slide rail 2353, the fourth slide rail 2353 drives the third slide rail 235 to slide along the chute 2351 through the V-shaped rod 2352. The third slide rail 235 pushes the second right-angle rod 234 and the pushing folding strip 233 to slide through its inclined end. The pushing folding strip 233 pushes the two clamping strips 24 to move away from each other through the push block 232, releasing the limiting of the circuit board, so that the circuit board drops into the interior of the rectangular hole 26 and is conveyed to the next working station for subsequent welding treatment of the circuit board and the silicon carbide field effect transistor.

[0061] Advantage 4: By controlling the periodic rotation of the rotating ring plate 21 around the central column 2, the two limiting strips 25 are successively driven to adjust the placement angle of the circuit board on the rotating ring plate 21, and the two clamping strips 24 are driven to clamp and fix the circuit board on the rotating ring plate 21. After the nozzle assembly 11 finishes mounting the silicon carbide field effect transistor on the circuit board, the two limiting strips 25 are successively driven to move away from each other so that the two limiting strips 25 are separated from the circuit board, the sliding frame 22 (together with the clamping strips 24 and the circuit board) moves along the first slide rail 221 towards the rectangular hole 26, and the two clamping strips 24 are separated from each other after clamping the circuit board above the rectangular hole 26, thus completing the automatic loading and unloading of the circuit board and improving the mounting efficiency of the silicon carbide field effect transistor.

[0062] 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 foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An elastic contact type high heat dissipation installation tooling for a silicon carbide field effect transistor, characterized in that, Including: A machine body (1), on the upper surface of which a suction nozzle assembly (11) is fixedly connected; A central column (2), the bottom end of the central column (2) is fixedly connected to the upper surface of the machine body (1), a rotating ring plate (21) is rotatably connected to the circumferential outer surface of the central column (2), the rotating ring plate (21) is slidably connected with a sliding frame (22) through a first slide rail (221) provided on its upper surface, a sliding rod (23) is slidably connected to the inner wall of the sliding frame (22), the sliding rod (23) is fixedly connected with a clamping strip (24) through a first right-angle rod (241) provided at its bottom, a limiting strip (25) is slidably connected to the upper surface of the rotating ring plate (21), and a rectangular hole (26) is formed in the upper surface of the rotating ring plate (21); Wherein, during the process of the rotating ring plate (21) rotating around the axis of the central column (2), first drive the two limiting strips (25) to approach the circuit board, so that the length direction of the circuit board is along the radial direction of the rotating ring plate (21), drive the two clamping strips (24) to approach the circuit board, so as to clamp and limit the circuit board. After the field effect transistor is mounted, continue to rotate the rotating ring plate (21), then drive the two clamping strips (24) and the circuit board to move towards the rectangular hole (26), so that the circuit board is located above the rectangular hole (26), and finally drive the two clamping strips (24) to move away from each other, so as to release the limit of the clamping strip (24) on the circuit board, and make the circuit board fall into the interior of the rectangular hole (26).

2. The high heat dissipation installation tooling for an elastic contact type silicon carbide field effect transistor according to claim 1, characterized in that: One side of the sliding frame (22) close to the central column (2) is fixedly connected with a centripetal rod (222), the top end of the central column (2) is fixedly connected with a second slide rail (223), and one end of the centripetal rod (222) close to the second slide rail (223) is slidably connected with the second slide rail (223); Wherein, the second slide rail (223) includes a near-center slide rail two (2231), a far-center slide rail two (2232) and a flat rail two (2233), and the near-center slide rail two (2231) is communicated with the far-center slide rail two (2232) through the flat rail two (2233).

3. An elastic contact type high heat dissipation installation tooling for a silicon carbide field effect transistor according to claim 1, characterized in that: There are two sliding rods (23) which are symmetrically distributed left and right along the center of the sliding frame (22), a strong spring (231) is fixedly connected between the two sliding rods (23), the top of the sliding rod (23) is rotatably connected with a push block (232), a push folding strip (233) is slidably arranged on the top of the sliding frame (22), one side of the push folding strip (233) away from the limiting strip (25) is fixedly connected with a second right-angle rod (234), a third slide rail (235) is slidably connected to the upper surface of the rotating ring plate (21), and the bottom end of the second right-angle rod (234) is slidably connected with the third slide rail (235).

4. An elastic contact type high heat dissipation installation tooling for a silicon carbide field effect transistor according to claim 3, characterized in that: The top of the sliding frame (22) is fixedly connected with a seventh slide rail (2332), both ends of the push folding strip (233) are fixedly connected with seventh sliders (2331), and the push folding strip (233) is slidably connected with the seventh slide rail (2332) through the seventh sliders (2331).

5. The high heat dissipation installation tooling for an elastic contact type silicon carbide field effect transistor according to claim 3, characterized in that: The upper surface of the rotating ring plate (21) is provided with a sliding groove (2351), the third sliding rail (235) is slidably connected to the rotating ring plate (21) along the sliding groove (2351), one end of the third sliding rail (235) close to the central column (2) is fixedly connected with a V-shaped rod (2352), the top end of the central column (2) is fixedly connected with a fourth sliding rail (2353), and one end of the V-shaped rod (2352) close to the fourth sliding rail (2353) is slidably connected to the fourth sliding rail (2353); Wherein, the fourth sliding rail (2353) includes an incenter sliding rail four (23531), an excenter sliding rail four (23532) and a flat rail four (23533), and the incenter sliding rail four (23531) is communicated with the excenter sliding rail four (23532) through the flat rail four (23533).

6. The high heat dissipation installation tooling for an elastic contact type silicon carbide field effect transistor according to claim 1, characterized in that: The upper surface of the rotating ring plate (21) is fixedly connected with a sixth sliding rail (252), one side of the limiting strip (25) close to the sixth sliding rail (252) is fixedly connected with a sixth sliding block (251), the sixth sliding block (251) is slidably connected to the sixth sliding rail (252), one side of the limiting strip (25) close to the sixth sliding rail (252) is fixedly connected with a moving block (253), one end of the moving block (253) away from the limiting strip (25) is rotatably connected with a push-pull rod (254), the lower surface of the rotating ring plate (21) is rotatably connected with a rotating block (255), the circumferential outer surface of the rotating block (255) is fixedly connected with a fifth sliding rail (256), and the bottom end of the push-pull rod (254) penetrates through the rotating ring plate (21) and is slidably connected to the fifth sliding rail (256); Wherein, the fifth sliding rail (256) includes an incenter sliding rail five (2561), an excenter sliding rail five (2562) and a flat rail five (2563), and the incenter sliding rail five (2561) is communicated with the excenter sliding rail five (2562) through the flat rail five (2563).

7. An elastic contact type high heat dissipation installation tooling for a silicon carbide field effect transistor according to claim 6, characterized in that: The bottom end of the rotating block (255) is fixedly connected with a toothed block (257), the circumferential outer surface of the central column (2) is fixedly connected with teeth (2571) meshing with the toothed block (257), the bottom of the fifth sliding rail (256) is fixedly connected with a clamping strip (258), and the circumferential outer surface of the central column (2) is fixedly connected with an arc-shaped strip (2581).

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