A screw driving device and an electronic component mounting machine

Abstract

This application relates to the field of electronic component mounting technology, and provides a screw-tapping device, including a fixing plate, a screw-tapping component, and a feeding assembly. The feeding assembly includes a mounting base, a feeding head, two feeding claws, and two first reset components. The mounting base has a connecting hole communicating with the feeding head along the length direction of the fixing plate, and the screw-tapping component is movably inserted through the connecting hole. Both feeding claws are rotatably connected to the mounting base, and the end of each feeding claw away from the screw-tapping component has a through groove communicating with the connecting hole. The two first reset components are respectively disposed on the two feeding claws to drive the two feeding claws to abut against each other, so that the two through grooves surround and form a limiting groove. Based on this, displacement can be minimized when the screw passes through the mounting hole of the MOSFET. In addition, an electronic component mounting machine is also provided.

Description

Technical Field

[0001] This application relates to the field of electronic component mounting, and in particular to a screw-tapping device and an electronic component mounting machine thereof. Background Technology

[0002] Currently, for some electronic components (such as MOSFETs), the temperature of MOSFETs tends to rise during use, thus affecting their performance. Therefore, MOSFETs are generally fitted with heat sinks using electronic component mounting machines to improve their heat dissipation capabilities.

[0003] In related technologies, electronic component mounting machines include a turntable, multiple placement seats, a feeding device, and a screw-tapping device. The placement seats are evenly spaced along the circumference of the turntable. The turntable rotates to move each placement seat sequentially through the feeding device and the screw-tapping device. In actual operation, the heat sink is first placed on the placement seat, the MOSFET is placed into the heat sink via the feeding device, and then the screw-tapping device tightens the screws into the heat sink, thus completing the mounting of the MOSFET.

[0004] The screw-tapping device includes a feeding component, a conveying component, a screw-tapping component, and a driving component. The conveying component transports the screw to the feeding component, and the driving component drives the screw-tapping component to approach the MOSFET, so that the screw-tapping component cooperates with the feeding component, so that the feeding component passes the screw through the mounting hole of the MOSFET, and the screw-tapping component tightens the screw to lock the screw to the heat sink, thereby realizing the installation of the MOSFET.

[0005] However, in practical applications, the screws are prone to misalignment when the feeding component inserts them into the mounting holes of the MOSFETs, making it impossible for the screws to pass through the mounting holes of the MOSFETs. Therefore, improvements are needed. Summary of the Invention

[0006] In order to minimize the risk of misalignment when the screw passes through the mounting hole of the MOSFET and to ensure that the tapping component can be stably inserted into the mounting hole of the MOSFET, this application provides a tapping device.

[0007] The screw-tapping device provided in this application adopts the following technical solution:

[0008] A screw-tapping device includes a fixing plate, a screw-tapping component, and a feeding assembly. The screw-tapping component and the feeding assembly are spaced apart along the length of the fixing plate. The feeding assembly includes a mounting base, a feed head, two feeding claws, and two first reset components. The mounting base has a connecting hole communicating with the feed head along the length of the fixing plate, and the screw-tapping component is movably inserted through the connecting hole. Both feeding claws are rotatably connected to the mounting base, and the end of each feeding claw away from the screw-tapping component has a through groove communicating with the connecting hole. The two first reset components are respectively disposed on the two feeding claws to drive the two feeding claws to abut against each other, so that the two through grooves surround and form a limiting groove.

[0009] By adopting the above technical solution, in the initial state, the two first reset members drive the two loading claws to rotate toward the side that is close to each other, so that the two loading claws abut against each other, and the two through slots enclose each other to form a limiting slot for limiting the placement of screws.

[0010] In actual operation, the screw is fed to the feed head. Since the connecting hole is connected to both the feed head and the through slot, the screw is guided by the feed head to the connecting hole and falls into the limiting slot, aligning the screw with the mounting hole of the MOSFET. Simultaneously, the tapping component moves closer to and abuts against the screw, causing the two feeding claws to rotate towards opposite sides and compress the first reset component, thus disengaging the screw along its length from the limiting slot.

[0011] During this process, the screw is stably fed under the limit of the limiting groove, which can effectively prevent the screw from shifting when it passes through the mounting hole of the MOSFET. The screw is aligned with the mounting hole of the MOSFET, so that the tapping part can be stably passed through the mounting hole of the MOSFET.

[0012] Preferably, the tapping device further includes a driving assembly, which includes a first driving member disposed on the fixed plate and connected to the tapping component, so as to drive the tapping component to move closer to or away from the feeding claw.

[0013] By adopting the above technical solution, and by setting a first driving component, the first driving component drives the tapping component to move closer to or further away from the feeding claw, that is, drives the tapping component to move along the length direction of the fixed plate, so as to achieve stable movement of the tapping component and thereby improve the stability of the tapping component in fastening the screw.

[0014] Preferably, the drive assembly further includes a second drive member, which is connected to the fixing plate and the mounting base to drive the mounting base closer to or further away from the tapping component.

[0015] By adopting the above technical solution, and by setting a second driving component, the second driving component drives the mounting base to move closer to or away from the tapping component, that is, drives the mounting base to move along the length direction of the fixed plate, so that the mounting base can get closer to the heat sink on the turntable, so that the two feeding claws are closer to the heat sink, reducing the distance between the screw and the heat sink, thereby improving the stability of the screw fastening and the heat sink.

[0016] Preferably, the tapping device further includes a buffer assembly, which includes a buffer elastic element disposed between the tapping component and the mounting base.

[0017] By adopting the above technical solution and setting a buffer elastic element, the buffer elastic element can play a certain buffering role during the movement of the tapping part, so as to avoid the tapping part moving too fast and make the tapping part able to tighten the screw stably, thereby improving the stability of the screw fastening and heat sink.

[0018] Preferably, the tapping device further includes a clamping assembly, which includes two clamping claws. The two clamping claws are located at the end of the feeding claw away from the tapping component, and the two clamping claws are used to clamp the electronic components fed by the unloading device.

[0019] By adopting the above technical solution, in actual operation, the feeding device directly feeds electronic components (such as MOSFETs) to the feeding claw. The two clamping claws clamp the MOSFET, so that the mounting hole of the MOSFET corresponds to the limiting groove. After the screw is limited in the limiting groove, it can be inserted into the mounting hole of the MOSFET, so that the MOSFET can be locked to the heat sink in the future.

[0020] Preferably, the drive assembly further includes two third drive members, which are disposed on the mounting base and respectively connected to the two clamping claws, so that the two clamping claws move closer to or further away from each other.

[0021] By adopting the above technical solution, and by setting two third driving components, the two third driving components drive the two clamping claws to move closer to each other, so that the two clamping claws clamp and fix the MOSFET.

[0022] Preferably, the clamping assembly further includes two second reset members, the two clamping claws are rotatably connected to the mounting base, and each second reset member is disposed between each clamping claw and the mounting base to drive the ends of the two clamping claws near the loading claw to move closer to each other.

[0023] By adopting the above technical solution, and by setting two second reset components, the unloading device transports the MOS transistor from one end of the two clamping claws away from the loading claw to the other end, and the MOS transistor is located between the two clamping claws. As the two second reset components drive the two clamping claws to move closer to each other, the clamping force of the two clamping claws on the MOS transistor increases during the transport process, so as to achieve clamping and fixing of the MOS transistor.

[0024] Preferably, the clamping assembly further includes two positioning blocks, which are respectively located at one end of the two clamping claws near the loading claw.

[0025] By adopting the above technical solution and setting two positioning blocks, when the MOS transistor is clamped by the two clamping claws and abuts against the two positioning blocks, the mounting hole of the MOS transistor corresponds to the limiting groove, so as to achieve the positioning of clamping and fixing the MOS transistor.

[0026] Preferably, the clamping assembly further includes an adjusting rope, one end of which is connected to the tapping component, and the other end is connected to the ends of the two clamping claws away from the loading claw.

[0027] By adopting the above technical solution, the distance between the tapping screw and the mounting base is adjusted by setting an adjusting rope, thereby adjusting the clamping force of the two clamping claws on the MOSFET. This avoids excessive clamping force that could damage the MOSFET and improves the stability of the MOSFET clamping and fixing. Furthermore, as the second driving component drives the mounting base closer to the heat sink, the adjusting rope is continuously tightened, causing the two clamping claws to rotate. This causes the ends of the two clamping claws near the loading claw to move away from each other and release the clamping force on the MOSFET. This allows the MOSFET and screw to be stably loaded into the heat sink, thereby improving the accuracy and stability of the MOSFET being secured to the heat sink.

[0028] Secondly, this application provides an electronic component mounting machine.

[0029] The electronic component mounting machine provided in this application adopts the following technical solution:

[0030] An electronic component mounting machine includes a turntable, a plurality of placement seats, a dispensing device, a feeding device, and a screw-tapping device as described above. The plurality of placement seats are arranged at intervals along the circumference of the turntable, and the dispensing device, the feeding device, and the screw-tapping device are arranged at intervals along the circumference of the turntable in sequence.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. In actual operation, the screw is fed to the feed head. Since the connecting hole is connected to both the feed head and the through slot, the screw is fed into the connecting hole under the guidance of the feed head and falls into the limiting slot, aligning the screw with the mounting hole of the MOSFET. Simultaneously, the tapping component moves closer to and abuts against the screw, causing the two feeding claws to rotate towards opposite sides and compress the first reset component, allowing the screw to disengage from the limiting slot along its length. During this process, the screw is stably fed under the limiting slot's control, effectively preventing the screw from shifting when passing through the mounting hole of the MOSFET, and ensuring the screw is aligned with the mounting hole of the MOSFET, allowing the tapping component to stably pass through the mounting hole of the MOSFET.

[0033] 2. The unloading device directly unloads electronic components (such as MOSFETs) to the loading claws. The two clamping claws clamp the MOSFETs so that the mounting holes of the MOSFETs correspond to the limiting grooves. After the screws are limited in the limiting grooves, they can be inserted into the mounting holes of the MOSFETs, so that the MOSFETs can be subsequently fastened to the heat sink.

[0034] 3. By setting two second reset components, the unloading device transports the MOS transistor from one end of the two clamping claws away from the loading claw to the other end, and the MOS transistor is located between the two clamping claws. As the two second reset components drive the two clamping claws to move closer to each other, the clamping force of the two clamping claws on the MOS transistor increases during the transport process, so as to achieve clamping and fixing of the MOS transistor. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the tapping device in Embodiment 1 of this application;

[0036] Figure 2 This is a partial cross-sectional schematic diagram of the feeding assembly in Embodiment 1 of this application;

[0037] Figure 3 This is a schematic diagram of the overall structure of the two feeding claws in Embodiment 1 of this application;

[0038] Figure 4 This is a schematic diagram of the feeding assembly and clamping assembly structure in Embodiment 2 of this application;

[0039] Figure 5 This is a schematic diagram of the state of one of the feeding component and the clamping component in Embodiment 3 of this application;

[0040] Figure 6 This is a schematic diagram of another state of the feeding component and clamping component in Embodiment 3 of this application;

[0041] Figure 7 This is a schematic diagram of the overall structure of the tapping device in Embodiment 3 of this application;

[0042] Figure 8 This is a simplified schematic diagram of the electronic component mounting machine in the embodiments of this application.

[0043] Reference numerals: 1. Fixing plate; 2. Tapping screw; 3. Feeding assembly; 31. Mounting base; 311. Connecting hole; 312. Mounting groove; 32. Feeding head; 33. Feeding claw; 331. Through groove; 34. First reset component; 35. Limiting groove; 4. Drive assembly; 41. First drive component; 42. Fixing base; 43. Second drive component; 44. Third drive component; 5. Buffer assembly; 51. Buffer elastic component; 52. Buffer column; 6. Clamping assembly; 61. Clamping claw; 62. Second reset component; 63. Positioning block; 64. Adjusting rope; 7. MOS transistor; 8. Frame; 9. Turntable; 10. Placement base; 11. Dispensing device; 12. Unloading device. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0045] This application discloses a screw-tapping device.

[0046] Example 1:

[0047] Reference Figure 1 The screw-tapping device includes a fixing plate 1, a screw-tapping component 2, and a feeding assembly 3. The fixing plate 1 is vertically arranged, and the screw-tapping component 2 and the feeding assembly 3 are spaced apart in the vertical direction, with the screw-tapping component 2 located above the feeding assembly 3. The screw-tapping component 2 is located on one side of the fixing plate 1. In this embodiment, the screw-tapping component 2 is an electric screwdriver, but in other embodiments it can also be an electric tightening gun or other tools, which is not limited in this application.

[0048] Reference Figure 2 and Figure 3 Specifically, the feeding assembly 3 includes a mounting base 31, a feeding head 32, two feeding claws 33, and two first reset members 34. The mounting base 31 is located on one side of the fixed plate 1, and the mounting base 31 has a connecting hole 311 in the vertical direction. The power output shaft of the tapping member 2 moves vertically through the connecting hole 311. The feeding head 32 is integrally connected to one side of the mounting base 31 and communicates with the connecting hole 311. The feeding head 32 is connected to a screw feeder (not shown in the figure). The screw feeder sequentially feeds screws to the feeding head 32, and the screws fall into the connecting hole 311 under the guidance of the feeding head 32.

[0049] The mounting base 31 also has a mounting groove 312. Two loading claws 33 are symmetrically arranged and rotatably connected in the mounting groove 312, and the lower end of each loading claw 33 has a through groove 331. Two first reset members 34 are arranged one-to-one with the two loading claws 33. The first reset members 34 can be, but are not limited to, springs, tension springs, etc. The two ends of each first reset member 34 are respectively fixedly connected between each loading claw 33 and the mounting base 31. In the initial state, the two first reset members 34 drive the lower ends of the two loading claws 33 to abut against each other, so that the two through grooves 331 enclose a limiting groove 35 for limiting the placement of screws. It should be noted that the axis of the limiting groove 35 coincides with the axis of the mounting hole of the electronic component (e.g., MOSFET 7).

[0050] In actual operation, the screw feeder delivers screws to the feed head 32. The screws fall from the feed head 32 into the connecting hole 311, and then from the connecting hole 311 into the limiting groove 35. The limiting groove 35 limits the placement of the screws. Since the axis of the limiting groove 35 coincides with the axis of the mounting hole of the MOSFET 7, the screws are aligned with the mounting hole of the MOSFET 7.

[0051] At the same time, the tapping component 2 moves downward in the vertical direction, and the power output shaft of the tapping component 2 approaches and abuts against the screw, so that the screw squeezes the two feeding claws 33, thereby driving the two feeding claws 33 to rotate to the side away from each other and compress the first reset component 34, so that the lower end diameter of the limiting groove 35 becomes larger, and the screw disengages from the limiting groove 35 in the vertical direction. Then, each first reset component 34 drives each feeding claw 33 to reset to the initial state.

[0052] During this process, the screw is stably fed vertically under the limiting position in the limiting groove 35, which can effectively prevent the screw from shifting when it passes through the mounting hole of the MOS tube 7, and the screw is aligned with the mounting hole of the MOS tube 7, so that the tapping screw 2 can be stably passed through the mounting hole of the MOS tube 7.

[0053] Reference Figure 1 In some embodiments, the tapping device further includes a drive assembly 4, which includes a first drive member 41 and a fixed base 42. The first drive member 41 can be, but is not limited to, a cylinder, a hydraulic cylinder, an electric push rod, etc. The first drive member 41 is fixedly connected to the fixed plate 1, and the power output shaft is fixedly connected to the fixed base 42. The fixed base 42 is slidably connected to the fixed plate 1 in the vertical direction, and the tapping member 2 is fixedly connected to the fixed base 42. The first drive member 41 drives the fixed base 42 to move, thereby driving the tapping member 2 to move in the vertical direction, so that the tapping member 2 moves closer to or away from the feeding claw 33, so as to achieve stable movement of the tapping member 2, thereby improving the stability of the tapping member 2 in fastening the screw.

[0054] In some embodiments, the drive assembly 4 further includes a second drive member 43, which may be, but is not limited to, a cylinder, a hydraulic cylinder, an electric push rod, etc. The second drive member 43 is fixedly connected to the fixed plate 1 and its power output shaft is fixedly connected to the mounting base 31 to drive the mounting base 31 to move closer to or away from the tapping member 2, that is, to drive the mounting base 31 to move in the vertical direction. During the process of fastening the screw to the heat sink, the mounting base 31 can be brought closer to the heat sink on the turntable 9 so that the two feeding claws 33 are closer to the heat sink, reducing the distance between the screw and the heat sink, thereby improving the stability of the screw fastening to the heat sink.

[0055] It should be noted that the fixed base 42 and the mounting base 31 can be slidably connected to the fixed plate 1 by a slider and a slide rail, so as to improve the stability of the sliding of the fixed base 42 and the mounting base 31, thereby improving the stability of the tapping device.

[0056] In some embodiments, the tapping device further includes a buffer assembly 5, which includes a buffer elastic element 51 and a buffer post 52. The buffer elastic element 51 can be an elastic element such as a spring or an elastic post. The upper end of the buffer elastic element 51 elastically abuts against the fixed base 42, and the lower end elastically abuts against the mounting base 31. During the movement of the tapping component 2, the buffer elastic element 51 can play a certain buffering role, minimizing the excessive speed of movement of the tapping component 2, so that the tapping component 2 can stably tighten the screw, thereby improving the stability of the screw fastening and the heat sink. The lower end of the buffer post 52 is fixedly connected to the mounting base 31, and the upper end is movably inserted through the fixed base 42, which can further improve the stability of the sliding between the fixed base 42 and the mounting base 31. Furthermore, the buffer elastic element 51 is sleeved on the buffer post 52 to limit the bending deformation of the buffer elastic element 51, thereby ensuring the buffering stability of the buffer elastic element 51.

[0057] The implementation principle of this embodiment is as follows: The mounting base 31 is further provided with a mounting groove 312. Two feeding claws 33 are symmetrically arranged and rotatably connected to the mounting groove 312, and each of the two feeding claws 33 has a through groove 331 at its lower end. Two first reset members 34 are arranged one-to-one with the two feeding claws 33. The first reset members 34 can be, but are not limited to, springs, tension springs, etc. Both ends of each first reset member 34 are fixedly connected between each feeding claw 33 and the mounting base 31. In the initial state, the two first reset members 34 drive the lower ends of the two feeding claws 33 to abut against each other, so that a limiting groove 35 for screw placement is formed between the two through grooves 331. It should be noted that the axis of the limiting groove 35 coincides with the axis of the mounting hole of the electronic component (e.g., MOS transistor 7).

[0058] In actual operation, the screw feeder delivers screws to the feed head 32. The screws fall from the feed head 32 into the connecting hole 311, and then from the connecting hole 311 into the limiting groove 35. The limiting groove 35 limits the placement of the screws. Since the axis of the limiting groove 35 coincides with the axis of the mounting hole of the MOSFET 7, the screws are aligned with the mounting hole of the MOSFET 7.

[0059] At the same time, the tapping component 2 moves downward in the vertical direction, and the power output shaft of the tapping component 2 approaches and abuts against the screw, so that the screw squeezes the two feeding claws 33, thereby driving the two feeding claws 33 to rotate to the side away from each other and compress the first reset component 34, so that the lower end diameter of the limiting groove 35 becomes larger, and the screw disengages from the limiting groove 35 in the vertical direction. Then, each first reset component 34 drives each feeding claw 33 to reset to the initial state.

[0060] Example 2:

[0061] Reference Figure 4 This embodiment is identical to Embodiment 1 in all other structural aspects, except that the tapping device further includes a clamping assembly 6. The clamping assembly 6 includes two clamping claws 61, which are symmetrically arranged on the mounting base 31 and located below the feeding claw 33. The two clamping claws 61 are used to clamp the MOS transistor 7 fed by the unloading device 12.

[0062] In actual operation, the unloading device 12 directly unloads the MOSFET 7 to the loading claw 33, where two clamping claws 61 hold the MOSFET 7. At this time, the mounting hole of the MOSFET 7 corresponds to the limiting groove 35, so that the screw can be inserted into the mounting hole of the MOSFET 7 after being limited in the limiting groove 35, facilitating the subsequent mounting of the MOSFET 7 onto the heat sink. Meanwhile, in traditional electronic component mounting machines, the unloading device 12 usually places the MOSFET 7 onto the heat sink first, and then moves the heat sink to the screw-tapping device. However, during the movement, the MOSFET 7 and the heat sink are prone to relative displacement, making it difficult for the screw-tapping device to mount the MOSFET 7 onto the heat sink. In this embodiment, the screw-tapping device does not require the MOSFET 7 to move together with the heat sink, eliminating the relative displacement between the MOSFET 7 and the heat sink, thus ensuring that the MOSFET 7 is mounted onto the heat sink.

[0063] In some embodiments, the drive assembly 4 further includes two third drive members 44. The third drive members 44 may be, but are not limited to, cylinders, hydraulic cylinders, electric push rods, etc. The two third drive members 44 are fixedly connected to the mounting base 31 and the power output shafts are respectively fixedly connected to the two clamping claws 61 to drive the two clamping claws 61 to move closer or further away from each other, so that the two clamping claws 61 clamp and fix the MOS tube 7.

[0064] Example 3:

[0065] Reference Figure 5 and Figure 6 This embodiment is identical to Embodiment 2 in all other structural aspects, except that both gripping claws 61 are rotatably connected to the mounting base 31. The gripping assembly 6 also includes two second reset members 62, which are arranged one-to-one with the two gripping claws 61. The second reset members 62 are springs, with one end of each second reset member 62 fixedly connected to the mounting base 31 and the other end fixedly connected to the gripping claw 61, so as to drive the ends of the two gripping claws 61 near the loading claw 33 to move closer to each other, making the two gripping claws 61 form an "eight" shape.

[0066] In actual operation, the feeding device 12 conveys the MOS transistor 7 from one end away from the feeding claw 33 of the two clamping claws 61 along a straight line to the other end, with the MOS transistor 7 located between the two clamping claws 61. During the conveying process, the two sides of the MOS transistor 7 gradually come into contact with the two clamping claws 61, so that the clamping force of the two clamping claws 61 on the MOS transistor 7 becomes larger and larger. When the mounting hole of the MOS transistor 7 corresponds to the limiting groove 35 (that is, the axis of the mounting hole of the MOS transistor 7 coincides with the axis of the limiting groove 35), the two clamping claws 61 stably clamp the MOS transistor 7, thereby achieving the clamping and fixing of the MOS transistor 7.

[0067] In some embodiments, the clamping assembly 6 further includes two positioning blocks 63, which are respectively disposed in correspondence with the two clamping claws 61, and the positioning blocks 63 are fixedly connected to the end of the clamping claws 61 near the loading claw 33. When the MOS transistor 7 is clamped by the two clamping claws 61 and abuts against the two positioning blocks 63, the mounting hole of the MOS transistor 7 corresponds to the limiting groove 35 to achieve the positioning and fixing of the MOS transistor 7.

[0068] Reference Figure 7 In some embodiments, the clamping assembly 6 further includes an adjusting rope 64. The upper end of the adjusting rope 64 is fixedly connected to the fixing base 42, and the lower end is fixedly connected to the upper side of the two clamping claws 61 away from the loading claw 33. In the initial state, the adjusting rope 64 is in a taut state. Moving the tap 2 upward increases the distance between the tap 2 and the mounting base 31, causing the two clamping claws 61 to rotate. The ends of the two clamping claws 61 near the loading claw 33 move away from each other, thereby reducing the clamping force of the two clamping claws 61 on the MOSFET 7 and minimizing the risk of damage to the MOSFET 7 due to excessive clamping force. Similarly, moving the tap 2 upward to reduce the distance between the tap 2 and the mounting base 31 also improves the stability of the clamping and fixing of the MOSFET 7.

[0069] Furthermore, the screw is positioned in the limiting groove 35, allowing the screw to pass through the mounting hole of the MOSFET 7. The second driving component 43 drives the mounting base 31 to move downwards, thereby placing the MOSFET 7 and the screw onto the heat sink. During this process, the pull rope is continuously tightened, simultaneously driving the two clamping claws 61 to rotate. This causes the ends of the two clamping claws 61 closest to the loading claw 33 to move away from each other and release the clamping of the MOSFET 7. This allows the MOSFET 7 and the screw to be stably loaded into the heat sink, thereby improving the accuracy and stability of the MOSFET 7 being attached to the heat sink, as well as making the working process simple and smooth, thus improving the efficiency of screw tapping, and eliminating the need to use a driving component to drive the movement of the two clamping claws 61.

[0070] This application discloses an electronic component mounting machine.

[0071] Referring to the figure, the electronic component mounting machine includes a frame 8, a turntable 9, several placement seats 10, a dispensing device 11, a feeding device 12, and a tapping device as described in the above embodiment. The turntable 9 rotates intermittently on the frame 8 by a motor. The several placement seats 10 are fixedly connected to the upper side of the turntable 9 and are evenly spaced along the circumference of the turntable 9. The dispensing device 11, the feeding device 12, and the tapping device are fixedly connected to the frame 8 and are arranged sequentially at intervals along the circumference of the turntable 9. The feeding device 12 is connected to the tapping device, so that the feeding device 12 feeds the MOS transistor 7 into the clamping assembly 6 of the tapping device.

[0072] In actual operation, the heat sink is first placed on the mounting base 10, and the turntable 9 is rotated so that the mounting base 10 passes through the dispensing device 11 and the screw-tapping device in sequence. The dispensing device 11 applies thermally conductive adhesive to the heat sink, and then the feeding device 12 feeds the MOSFET 7 into the screw-tapping device so that the screw passes through the mounting hole of the MOSFET 7 and is locked into the heat sink, thereby realizing the installation of the MOSFET 7.

[0073] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A screw-tapping device, characterized in that: The system includes a fixing plate (1), a tapping component (2), and a feeding assembly (3); the tapping component (2) and the feeding assembly (3) are spaced apart along the length of the fixing plate (1); the feeding assembly (3) includes a mounting base (31), a feeding head (32), two feeding claws (33), and two first reset components (34); the mounting base (31) has a connecting hole (311) along the length of the fixing plate (1) that communicates with the feeding head (32), and the tapping component... (2) The connecting hole (311) is movable; the two loading claws (33) are rotatably connected to the mounting base (31), and the end of the loading claw (33) away from the tapping part (2) is provided with a through groove (331) communicating with the connecting hole (311); the two first reset parts (34) are respectively provided on the two loading claws (33) to drive the two loading claws (33) to abut against each other, so that the two through grooves (331) surround to form a limiting groove (35); The tapping device further includes a drive assembly (4), which includes a first drive member (41). The first drive member (41) is disposed on the fixed plate (1) and connected to the tapping member (2) to drive the tapping member (2) to move closer to or away from the feeding claw (33). The drive assembly (4) further includes a second drive member (43), which is disposed on the fixed plate (1) and connected to the mounting base (31) to drive the mounting base (31) to move closer to or away from the tapping member (2). The tapping device further includes a buffer assembly (5), which includes a buffer elastic element (51) disposed between the tapping component (2) and the mounting base (31); The tapping device also includes a clamping assembly (6), which includes two clamping claws (61). The two clamping claws (61) are located at one end of the feeding claw (33) away from the tapping component (2), and the two clamping claws (61) are used to clamp the MOS tube (7) fed by the unloading device (12). The clamping assembly (6) further includes two second reset members (62), and the two clamping claws (61) are rotatably connected to the mounting base (31). Each second reset member (62) is disposed between each clamping claw (61) and the mounting base (31) to drive the two clamping claws (61) to approach each other from one end of the feeding claw (33). The clamping assembly (6) further includes two positioning blocks (63), which are respectively located at one end of the two clamping claws (61) near the loading claw (33); The clamping assembly (6) also includes an adjusting rope (64), one end of which is connected to the tapping part (2), and the other end is connected to the ends of the two clamping claws (61) away from the loading claw (33); In the initial state, the adjusting rope (64) is in a taut state. The tap (2) moves upward to increase the distance between the tap (2) and the mounting base (31), so that the two clamping claws (61) rotate and the ends of the two clamping claws (61) near the loading claw (33) move away from each other to reduce the clamping force of the two clamping claws (61) on the MOS tube (7). The screw is placed in the limiting groove (35) so that the screw passes through the mounting hole of the MOS tube (7). The second driving member (43) drives the mounting base (31) to move downward so that the MOS tube (7) and the screw are placed on the heat sink. During this process, the pull rope is continuously tightened, and at the same time, it drives the two clamping claws (61) to rotate, so that the ends of the two clamping claws (61) close to the loading claw (33) move away from each other and release the clamping of the MOS tube (7), so that the MOS tube (7) and the screw can be stably loaded into the heat sink.

2. An electronic component mounting machine, characterized in that: It includes a turntable (9), a plurality of placement seats (10), a dispensing device (11), a feeding device (12), and a screw-tapping device as described in claim 1. The plurality of placement seats (10) are arranged at intervals along the circumference of the turntable (9), and the dispensing device (11), the feeding device (12), and the screw-tapping device are arranged at intervals along the circumference of the turntable (9) in sequence.

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