A fully automatic MOS tube block assembly machine

Abstract

The present invention relates to the field of MOS tube briquetting, and in particular to a fully automatic MOS tube briquetting assembly machine, comprising an assembly seat, wherein a square mounting hole penetrating from top to bottom is provided in the assembly seat, a side wall of the square mounting hole is provided with an avoidance groove for avoiding MOS tube pins, and the avoidance groove extends to the bottom of the assembly seat, a heat sink conveying track is provided on one side of the assembly seat, and a MOS tube conveying track and a briquetting conveying track are respectively provided on two sides of the assembly seat adjacent to the heat sink conveying track, and a bottom plate for supporting a heat sink is slidably connected in the square mounting hole. The fully automatic MOS tube briquetting assembly machine realizes a fully automated process from feeding to assembly by integrating components such as a feeding vibration plate, a conveying track, a plurality of push plates and an automatic screw tightening machine, thereby greatly improving production efficiency, and the order of each push plate entering and exiting the square mounting hole is controlled by a mechanical transmission type of a driving rod and a rotating disk, which is more reliable.

Description

Technical Field

[0001] The invention relates to the field of MOS tube pressing blocks, and in particular to a full-automatic MOS tube pressing block assembly machine. Background Art

[0002] In order to prevent the MOS tube from exploding, we need to use a clamp and screws to firmly fix the MOS tube on the heat sink. In this process, the clamp will have a preset mounting hole, and the MOS tube will also be equipped with corresponding threaded holes for screw fixation. Some circuits involve two MOS tubes. In order to reduce costs, the two MOS tubes are often installed on the same heat sink. Some clamps are injection molded (such as Figure 7 As shown in the figure, the elastic deformation of both ends of the injection molding block is limited, the connection between the MOS tube and the heat sink is not tight enough, and the screws are easy to loosen. In order to avoid the problems of the injection molding block, the following is generally used Figure 6 The metal pressing block shown in the figure has the raised parts at both ends pressed tightly on the corresponding MOS tubes. The metal pressing block has a certain deformation ability, which can prevent the screws from loosening. The pressing block is in close contact with the heat sink, and the thermal conductivity is better. You can view the relevant assembly operation video through the following link: https: / / v.douyin.com / i2P35Qds / . In the actual assembly process, when the screws are tightened, the length of the metal pressing block will increase slightly.

[0003] Traditionally, the assembly of MOS tubes and heat sinks is mostly done manually, but this method is not only inefficient, but also easily causes the position of the MOS tube to be skewed relative to the heat sink, which causes considerable trouble for the subsequent installation of the MOS tube pins.

[0004] In order to improve efficiency and accuracy, some equipment has adopted mechanized automatic installation. However, this automated installation method needs to ensure that the relative position between the MOS tube and the heat sink is always fixed during the screwing process, which undoubtedly increases the difficulty of operation. Since the size of the MOS tube and the heat sink is very small, the manipulator is quite clumsy in accurately positioning and fixing them, and often requires multiple manipulators to work together, which makes the entire control system extremely complicated.

[0005] Therefore, it is necessary to provide a fully automatic MOS tube block assembly machine to solve the above technical problems. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a fully automatic MOS tube block assembly machine.

[0007] The present invention provides a fully automatic MOS tube pressing block assembly machine, comprising an assembly seat, wherein a square mounting hole penetrating from top to bottom is provided in the assembly seat, a side wall of the square mounting hole is provided with an avoidance groove for avoiding the pins of the MOS tube, and the avoidance groove extends to the bottom of the assembly seat, a heat sink conveying track is provided on one side of the assembly seat, and a MOS tube conveying track and a pressing block conveying track are respectively provided on two sides of the assembly seat adjacent to the heat sink conveying track, a bottom plate for supporting the heat sink is slidably connected in the square mounting hole, the top of the bottom plate is flush with the bottom of the track groove of the heat sink conveying track, and a partition is provided in the track groove of the MOS tube conveying track. The plate divides the MOS tube conveying track into two, and the plate extends into the square mounting hole. A baffle for blocking the pressing block is fixed on the top of the assembly seat. A slide groove is provided between the baffle and the pressing block conveying track. A limit plate for blocking the end of the pressing block is slidably connected in the slide groove. One side of the limit plate is connected to the assembly seat through a spring. A heat sink push plate, a MOS tube push plate and a pressing block push plate are slidably connected in the heat sink conveying track, the MOS tube conveying track and the pressing block conveying track respectively. A driving device for driving the heat sink push plate, the MOS tube push plate, the pressing block push plate and the bottom plate is provided below the assembly seat.

[0008] The side walls of the heat sink conveying track, the MOS tube conveying track and the compact conveying track are all provided with a feeding track perpendicular thereto, and the heat sink conveying track, the MOS tube conveying track and the compact conveying track are connected to the corresponding feeding track, and a feeding vibration plate is installed at the end of the feeding track;

[0009] An automatic screwing machine is installed on the assembly seat.

[0010] Preferably, the driving device includes an electric motor, a turntable is fixed to the output end of the electric motor, and driving rods are fixed to the bottom of the heat sink push plate, the MOS tube push plate, the pressure block push plate and the bottom of the base plate. Four driving grooves are provided on the top of the turntable, and the driving rods are located in the corresponding driving grooves. The driving grooves include a driving part and a non-driving part, and the non-driving part is in an arc shape, and the center line of the non-driving part coincides with the rotation center line of the turntable.

[0011] Preferably, a belt conveyor line is provided between the assembly seat and the turntable, and the square mounting hole is directly opposite to one end of the belt conveyor line.

[0012] Preferably, when all the driving rods are located at the end of the driving part away from the non-driving part, the driving devices driving the heat sink push plate, the MOS tube push plate, the pressure block push plate and the bottom plate are flush with the corresponding feeding tracks.

[0013] Preferably, in the process of the driving rod moving from the driving part to the non-driving part, the driving rod at the bottom of the base plate reaches the non-driving part first, then the driving rod at the bottom of the heat sink push plate reaches the non-driving part, then the driving rod at the bottom of the MOS tube push plate reaches the non-driving part, and finally the driving rod at the bottom of the pressure block push plate reaches the non-driving part.

[0014] Preferably, the thickness of the baffle is greater than the thickness of the pressing block, and the bottom of the baffle is flush with the bottom of the track groove of the pressing block conveying track.

[0015] Preferably, the distance between the bottom of the track groove of the heat sink conveying track and the bottom of the track groove of the MOS tube conveying track is equal to the thickness of the heat sink.

[0016] Preferably, the distance between the bottom of the track groove of the MOS tube conveying track and the bottom of the track groove of the compact conveying track is equal to the thickness of the MOS tube.

[0017] Preferably, the automatic screw-tightening machine is a screw-tightening machine that automatically supplies screws.

[0018] Preferably, when the pressing block, the MOS tube and the heat sink are assembled, the friction force between the pressing block and the limiting plate is smaller than the gravity of the pressing block, the MOS tube and the heat sink.

[0019] Compared with the related art, the present invention has the following beneficial effects:

[0020] By integrating the feeding vibration plate, conveying track, multiple push plates and automatic screw tightening machine and other components, a fully automated process from feeding to assembly is realized, which greatly improves production efficiency. The assembly precision is high to avoid skew of MOS tube.

[0021] Moreover, the order of each push plate entering and exiting the square mounting hole is controlled by the mechanical transmission of the driving rod and the turntable, which is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the present invention without the automatic screw tightening machine;

[0023] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the top structure of the assembly seat of the present invention;

[0025] Figure 4 It is a schematic diagram of the bottom structure of the assembly base of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the automatic screw tightening machine of the present invention;

[0027] Figure 6is a schematic diagram of an assembled product of the present invention;

[0028] Figure 7 It is a schematic diagram of the existing injection molding block of the present invention.

[0029] Numbers in the figure: 1. Assembly seat; 2. Square mounting hole; 3. Avoidance groove; 4. Heat sink conveying track; 5. MOS tube conveying track; 6. Block conveying track; 7. Bottom plate; 8. Partition plate; 9. Baffle; 10. Slide groove; 11. Limit plate; 12. Spring; 13. Heat sink push plate; 14. MOS tube push plate; 15. Block push plate; 16. Driving device; 17. Feeding track; 18. Feeding vibration plate; 19. Automatic screw tightening machine; 20. Motor; 21. Turntable; 22. Driving rod; 23. Driving groove; 24. Driving part; 25. Non-driving part; 26. Belt conveyor line. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0031] Please refer to Figures 1 to 7 A fully automatic MOS tube block assembly machine includes an assembly seat 1, in which a square mounting hole 2 is provided, which is not only used for positioning components, but also has a specially designed avoidance groove 3 on its side wall to provide space for the pins of the MOS tube. The avoidance groove 3 extends all the way to the bottom of the assembly seat 1, ensuring that the pins will not be obstructed during the assembly process;

[0032] A heat sink conveying track 4 is provided on one side of the assembly seat 1, and a MOS tube conveying track 5 and a pressing block conveying track 6 are respectively provided on two sides of the assembly seat 1 adjacent to the heat sink conveying track 4. This layout ensures that each component can be conveyed to the assembly position in an orderly and efficient manner;

[0033] A bottom plate 7 for supporting the heat sink is slidably connected in the square mounting hole 2, and the top of the bottom plate 7 is flush with the bottom of the track groove of the heat sink conveying track 4, so that the heat sink can be pushed smoothly and without obstruction;

[0034] A partition plate 8 is provided in the track groove of the MOS tube conveying track 5, and the partition plate 8 divides the MOS tube conveying track 5 into two to meet the demand of conveying two MOS tubes at the same time, and the partition plate 8 extends into the square mounting hole 2 (because the size of the MOS tube is smaller than the size of the heat sink, even after the MOS tube is moved to the heat sink, the two MOS tubes can still be separated and positioned, and the distance between the two MOS tubes is the thickness of the partition plate 8);

[0035] A baffle plate 9 for blocking the pressing block is fixed on the top of the assembly seat 1, a slide groove 10 is provided between the baffle plate 9 and the pressing block conveying track 6, a limit plate 11 for blocking the end of the pressing block is slidably connected in the slide groove 10, one side of the limit plate 11 is connected to the assembly seat 1 through a spring 12, a heat sink push plate 13, a MOS tube push plate 14 and a pressing block push plate 15 are slidably connected in the heat sink conveying track 4, the MOS tube conveying track 5 and the pressing block conveying track 6, respectively, and a driving device 16 for driving the heat sink push plate 13, the MOS tube push plate 14, the pressing block push plate 15 and the bottom plate 7 is provided below the assembly seat 1;

[0036] The side walls of the heat sink conveying track 4, the MOS tube conveying track 5 and the compact conveying track 6 are all provided with a feeding track 17 perpendicular thereto, and the heat sink conveying track 4, the MOS tube conveying track 5 and the compact conveying track 6 are connected to the corresponding feeding track 17, and a feeding vibration plate 18 is installed at the end of the feeding track 17;

[0037] Feeding stage:

[0038] The feeding vibration plate 18 conveys components such as heat sinks, MOS tubes and pressing blocks to the corresponding feeding track 17 in a certain order and speed through vibration.

[0039] The feeding track 17 is connected with the heat sink conveying track 4, the MOS tube conveying track 5 and the pressing block conveying track 6, so as to ensure that the components can smoothly enter the respective conveying tracks.

[0040] An automatic screwing machine 19 is installed on the assembly seat 1.

[0041] The driving device 16 includes a motor 20, a turntable 21 is fixed to the output end of the motor 20, and a driving rod 22 is fixed to the bottom of the heat sink push plate 13, the MOS tube push plate 14, the pressure block push plate 15 and the bottom of the bottom plate 7. Four driving grooves 23 are provided on the top of the turntable 21, and the driving rod 22 is located in the corresponding driving grooves 23. The driving grooves 23 include a driving part 24 and a non-driving part 25 (the curvature and length of the four driving parts 24 are different, and the curvature and length of the four non-driving parts 25 are also different, which are determined according to the order in which the heat sink push plate 13, the MOS tube push plate 14, the pressure block push plate 15 and the bottom plate 7 enter and exit the square mounting hole 2. The schematic diagram in the accompanying drawings of the specification does not have a carefully calculated size). The non-driving part 25 is in an arc shape, and the center line of the non-driving part 25 coincides with the rotation center line of the turntable 21. When the driving part 24 is located in the non-driving part 25, the driving rod 22 does not move relative to the assembly seat 1.

[0042] Brief introduction of conveying and positioning stage:

[0043] In their respective conveying tracks, the heat sink, MOS tube and pressing block are pushed by corresponding push plates (heat sink pushing plate 13, MOS tube pushing plate 14, pressing block pushing plate 15), and move along the track into the square mounting hole 2, and the bottom plate 7 slides in the square mounting hole 2 to support the heat sink.

[0044] In the process of the driving rod 22 moving from the driving part 24 to the non-driving part 25, the driving rod 22 at the bottom of the bottom plate 7 first reaches the non-driving part 25, then the driving rod 22 at the bottom of the heat sink push plate 13 reaches the non-driving part 25, then the driving rod 22 at the bottom of the MOS tube push plate 14 reaches the non-driving part 25, and finally the driving rod 22 at the bottom of the pressure block push plate 15 reaches the non-driving part 25.

[0045] In the specific process of the conveying and positioning stage, the motor 20 drives the turntable 21 to rotate, and the driving groove 23 on the turntable 21 can drive the driving rod 22 to move, and the heat sink push plate 13, the MOS tube push plate 14, the block push plate 15 and the bottom plate 7 move synchronously. After the bottom plate 7 reaches the square mounting hole 2, the heat sink push plate 13 pushes the heat sink along the heat sink conveying track 4 to the top of the bottom plate 7. At this time, only the upper part of the heat sink is not restricted, and the bottom of the track groove of the MOS tube conveying track 5 is flush with the top of the heat sink in the square mounting hole 2. Then, the MOS tube push plate 14 pushes the two MOS tubes along the MOS tube conveying track 5 to move to At the top of the heat sink, the pins of the MOS tube are set in the avoidance groove 3, and only the upper part of the MOS tube is not restricted. Finally, the pressing block pushing plate 15 pushes the pressing block along the pressing block conveying track 6, so that the two ends of the pressing block move to the two MOS tubes. The front and rear of the pressing block are respectively restricted by the pressing block pushing plate 15 and the baffle 9, and the left and right of the pressing block are restricted by the limit plate 11. At this time, the mounting hole of the pressing block is aligned with the threaded hole on the heat sink, and the heat sink, the MOS tube and the pressing block are fixed together by the automatic screw tightening machine 19. Since the pressing block will be deformed during the tightening of the screws, the length will increase slightly. During the assembly process, the spring 12 is gradually compressed.

[0046] When the assembly is completed, the motor 20 drives the turntable 21 to rotate in the opposite direction, so that the pressing block push plate 15, the MOS tube push plate 14, the heat sink push plate 13 and the bottom plate 7 are moved out of the square mounting hole 2 in sequence, and the assembled heat sink, MOS tube and pressing block bottom are not restricted and fall to the belt conveyor line 26 for transportation.

[0047] A belt conveyor line 26 is arranged between the assembly seat 1 and the turntable 21. Such a layout allows the assembled products to drop directly from the square mounting hole 2 onto the belt conveyor line 26. The square mounting hole 2 is directly opposite to one end of the belt conveyor line 26, ensuring that the products can fall onto the conveyor line accurately and then be smoothly transported to the next process.

[0048] In order to ensure the continuity of feeding and assembly, when the driving rod 22 is completely moved to the end of the driving part 24 away from the non-driving part 25, the driving device 16 driving the heat sink push plate 13, the MOS tube push plate 14, the block push plate 15 and the bottom plate 7 will be perfectly aligned with the corresponding feeding track 17. This design enables the feeding vibration plate 18 to smoothly feed the components into the feeding track 17, and then be pushed into the square mounting hole 2 by the push plate for assembly.

[0049] The thickness of the baffle plate 9 is greater than the thickness of the compact, and the bottom of the baffle plate 9 is flush with the bottom of the track groove of the compact conveying track 6. This ensures that the compact can be stably blocked and will not move due to thrust. At the same time, the bottom of the baffle plate 9 is flush with the bottom of the track groove of the compact conveying track 6, providing stable support for the compact.

[0050] The distance between the heat sink conveying track 4 and the MOS tube conveying track 5 is precisely set to be equal to the thickness of the heat sink, which ensures that the heat sink can be stably placed on the bottom plate 7 when pushed into the square mounting hole 2. Similarly, the distance between the MOS tube conveying track 5 and the pressing block conveying track 6 also matches the thickness of the MOS tube, ensuring that the MOS tube can be accurately placed on the heat sink.

[0051] The automatic screwing machine 19 is a screwing machine that automatically supplies screws, which greatly improves the efficiency and accuracy of screw tightening during the assembly process.

[0052] When the pressing block, MOS tube and heat sink are assembled, the friction between the pressing block and the limiting plate 11 is less than the gravity of the pressing block, MOS tube and heat sink. This design ensures that when the driving device 16 rotates in the opposite direction to move the base plate 7 out of the square mounting hole 2, the assembled product can automatically fall onto the belt conveyor line 26 by its own gravity, and thus be smoothly transported to the next process.

[0053] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fully automatic MOS tube briquetting assembly machine, characterized in that: The invention comprises an assembly seat (1), wherein a square mounting hole (2) penetrating from top to bottom is provided in the assembly seat (1), a side wall of the square mounting hole (2) is provided with an avoidance groove (3), and the avoidance groove (3) extends to the bottom of the assembly seat (1), a heat sink conveying track (4) is provided on one side of the assembly seat (1), and a MOS tube conveying track (5) and a pressing block conveying track (6) are respectively provided on two sides of the assembly seat (1) adjacent to the heat sink conveying track (4), a bottom plate (7) is slidably connected in the square mounting hole (2), and the top of the bottom plate (7) is flush with the bottom of the track groove of the heat sink conveying track (4), and a partition plate (8) is provided in the track groove of the MOS tube conveying track (5), and the partition plate (8) divides the MOS tube conveying track (5) into two, and the partition plate (8) extends to the square mounting hole (2). In the mounting hole (2), a baffle (9) is fixed on the top of the assembly seat (1), a slide groove (10) is provided between the baffle (9) and the pressing block conveying track (6), a limit plate (11) is slidably connected in the slide groove (10), one side of the limit plate (11) is connected to the assembly seat (1) through a spring (12), a heat sink push plate (13), a MOS tube push plate (14) and a pressing block push plate (15) are slidably connected in the heat sink conveying track (4), the MOS tube conveying track (5) and the pressing block conveying track (6), respectively, a heat sink push plate (13), a MOS tube push plate (14), a pressing block push plate (15) and a driving device (16) for the bottom plate (7) are provided below the assembly seat (1), and an automatic screw tightening machine (19) is installed on the assembly seat (1); When the driving rod (22) is completely located at the end of the driving part (24) away from the non-driving part (25), the driving device (16) for driving the heat sink push plate (13), the MOS tube push plate (14), the pressure block push plate (15) and the bottom plate (7) is flush with the corresponding feeding track (17); When the driving rod (22) moves from the driving part (24) to the non-driving part (25), first the driving rod (22) at the bottom of the bottom plate (7) reaches the non-driving part (25), then the driving rod (22) at the bottom of the heat sink push plate (13) reaches the non-driving part (25), then the driving rod (22) at the bottom of the MOS tube push plate (14) reaches the non-driving part (25), and finally the driving rod (22) at the bottom of the pressure block push plate (15) reaches the non-driving part (25); The thickness of the baffle (9) is greater than the thickness of the pressing block, and the bottom of the baffle (9) is flush with the bottom of the track groove of the pressing block conveying track (6); The distance between the bottom of the track groove of the heat sink conveying track (4) and the bottom of the track groove of the MOS tube conveying track (5) is equal to the thickness of the heat sink.

2. A fully automatic MOS tube briquetting assembly machine according to claim 1, characterized in that: The side walls of the heat sink conveying track (4), the MOS tube conveying track (5) and the compact conveying track (6) are all provided with a feeding track (17) perpendicular thereto, and the heat sink conveying track (4), the MOS tube conveying track (5) and the compact conveying track (6) are connected to the corresponding feeding track (17), and a feeding vibration plate (18) is installed at the end of the feeding track (17).

3. The fully automatic MOS tube briquetting assembly machine according to claim 1, characterized in that: The driving device (16) comprises an electric motor (20), a rotating disk (21) is fixed at the output end of the electric motor (20), a driving rod (22) is fixed at the bottom of the heat sink push plate (13), the MOS tube push plate (14), the pressure block push plate (15) and the bottom of the bottom plate (7), four driving grooves (23) are provided at the top of the rotating disk (21), and the driving rod (22) is located in the corresponding driving groove (23), and the driving groove (23) comprises a driving part (24) and a non-driving part (25), and the non-driving part (25) is in an arc shape, and the center line of the non-driving part (25) coincides with the rotation center line of the rotating disk (21).

4. The fully automatic MOS tube briquetting assembly machine according to claim 1, characterized in that: A belt conveyor line (26) is provided between the assembly seat (1) and the turntable (21), and the square mounting hole (2) is directly opposite to one end of the belt conveyor line (26).

5. The fully automatic MOS tube briquetting assembly machine according to claim 1, characterized in that: The distance between the bottom of the track groove of the MOS tube conveying track (5) and the bottom of the track groove of the pressing block conveying track (6) is equal to the thickness of the MOS tube.

6. The fully automatic MOS tube briquetting assembly machine according to claim 1, characterized in that: The automatic screw-tightening machine (19) is a screw-tightening machine that automatically supplies screws.

7. The fully automatic MOS tube briquetting assembly machine according to claim 1, characterized in that: When the pressing block, the MOS tube and the heat sink are assembled, the friction force between the pressing block and the limiting plate (11) is smaller than the gravity of the pressing block, the MOS tube and the heat sink.

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