PCB slot positioning clamp for PCB embedded mosfet

Abstract

The application discloses a PCB slotting positioning clamp for PCB embedded MOSFET, and relates to the technical field of PCB embedded MOSFET packaging processing, which comprises a connecting shaft and a connecting sleeve, a support frame one is externally mounted at one end of the connecting shaft, a support frame two is externally arranged at the other end of the connecting shaft, and a driving assembly for providing driving force clamping is mounted at the end of the connecting shaft. The PCB slotting positioning clamp for PCB embedded MOSFET can flexibly adapt to PCB boards of different sizes through the fine adjustment function of the bidirectional screw rod in the positioning assembly, two groups of V-shaped positioning plates cooperated with rubber positioning points can accurately lock the processing reference of the PCB board, the initial position of the clamp plate is adjusted in advance so that the clamp plate is accurately matched with the positioning plate, and then the driving assembly drives the two-side clamping and the upper and lower synchronous action, three-dimensional synchronous limiting is realized, the up-and-down movement and left-and-right deviation of the PCB board in the slotting process are avoided, and the slotting positioning precision is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of PCB embedded MOSFET packaging technology, specifically a PCB board slotting and positioning fixture for PCB embedded MOSFETs. Background Technology

[0002] With the rapid development of new energy vehicles, industrial automation, and communication equipment, the market demand for miniaturized, highly integrated, and high-performance electronic devices continues to rise. MOSFETs, as voltage-controlled semiconductor devices, have become a core component of power devices due to their advantages such as high input resistance, low power consumption, and large dynamic range. Upgrading and iterating their packaging technology has become a key direction for industry development. Traditional MOSFETs use surface mounting, which not only occupies a large PCB assembly area and increases production costs, but also has significant limitations in high-frequency characteristics and anti-interference capabilities, failing to meet the application requirements of miniaturized and highly reliable electronic devices. Therefore, PCB-embedded MOSFET packaging technology has emerged. The core process of PCB-embedded MOSFET packaging technology includes key steps such as PCB board slotting, MOSFET chip embedding, multilayer lamination, and specialized testing. Among these, the accuracy of PCB board slotting directly determines the accuracy of MOSFET chip embedding, the quality of subsequent lamination and filling, and the electrical performance and reliability of the final product, serving as the fundamental prerequisite for the entire packaging process.

[0003] However, the positioning fixtures currently used for PCB board slotting in the industry generally suffer from problems such as insufficient positioning accuracy, poor adaptability, and poor clamping stability: most fixtures cannot achieve multi-directional synchronous positioning of the PCB board and can only clamp from a single direction, which makes it easy for the PCB board to move up and down or shift left and right during the slotting process, making it difficult to meet the slotting accuracy requirement of ±0.1mm.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a PCB board slotting positioning fixture for PCB embedded MOSFETs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a PCB board slotting and positioning fixture for embedded MOSFETs, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a PCB board slotting and positioning fixture for embedded MOSFETs, comprising a connecting shaft and a connecting sleeve. A support frame is externally mounted on one end of the connecting shaft, and a support frame is externally mounted on the other end of the connecting shaft. A driving assembly for providing driving force for clamping is mounted on the end of the connecting shaft. The driving assembly includes a servo motor, a mounting bracket, a guide rod, and a lead screw. A lead screw is mounted on the output end of the servo motor, and a clamping assembly for adjusting clamping is threaded onto the outer surface of the lead screw. One side of the outer surface of the servo motor is fixedly mounted... The device includes a mounting bracket with a guide rod at its bottom. The clamping assembly comprises a sliding clamp, a threaded rod, and a clamping plate. The sliding clamp has a threaded rod internally threaded onto its threaded side, and a clamping plate is located at the end of the threaded rod. A guide rod is slidably mounted on the side of the sliding clamp near the lead screw. The connecting sleeve is disposed on the outer surface of the connecting shaft, and a positioning assembly for auxiliary positioning is installed inside the connecting sleeve. The positioning assembly comprises a connecting seat, a bidirectional screw, a positioning plate, and rubber positioning points. The connecting seat has a bidirectional screw internally threaded onto its thread, and a positioning plate is threaded onto the outer surface of the bidirectional screw. A rubber positioning point is installed on one side of the positioning plate.

[0007] Furthermore, the positioning plates are provided in two sets, which are arranged in a "V" shape and are distributed in a one-to-one correspondence with the rubber positioning points.

[0008] Furthermore, the clamping assembly also includes a rubber pad and a slide bar, and a rubber pad is provided on one outer surface of the clamping plate, and a slide bar is installed on the other side of the clamping plate, and the slide bar is slidably disposed inside the slide clamp.

[0009] Furthermore, both the first and second support frames are equipped with external threaded sleeves at their bottoms, and the top of the external threaded sleeves is provided with a bottom frame.

[0010] Furthermore, the bottom frame has a hollow triangular structure inside, and all the triangular parts are distributed with acute angles.

[0011] Furthermore, the bottom frame is provided with an adjustment component for assisting height adjustment. The adjustment component includes a servo motor, a drive roller, a synchronous belt, an inner screw, and a transmission roller. The output end of the servo motor is equipped with a drive roller, and the outer surface of the drive roller is provided with a transmission roller via the synchronous belt. The top of the transmission roller is equipped with an inner screw.

[0012] Furthermore, the internal thread is located inside the external thread sleeve, and the external thread sleeve and the internal thread are distributed in a one-to-one correspondence.

[0013] Furthermore, a support frame one is fixedly installed at the end of the guide rod, and the support frame one has the same structure as the support frame two.

[0014] Furthermore, the clamping assembly is provided in two sets, and the two sets of clamping assembly have the same structure.

[0015] Furthermore, the rubber pads are distributed in a one-to-one correspondence with the clamping plate, and a PCB board is installed between the two sets of rubber pads.

[0016] This invention provides a PCB board slotting and positioning fixture for embedded MOSFETs, which has the following advantages: 1. This PCB board slotting positioning fixture for embedded MOSFETs can flexibly adapt to PCB boards of different sizes through the fine-tuning function of the bidirectional screw in the positioning component. Two sets of V-shaped positioning plates, together with rubber positioning points, can accurately lock the PCB board processing reference. At the same time, the initial position of the clamping plate is adjusted in advance to ensure that it is precisely matched with the positioning plate. Combined with the synchronous action of double-sided clamping and upper downward pressing driven by the drive component, three-dimensional synchronous limiting is achieved, eliminating vertical movement and horizontal offset during the PCB board slotting process, greatly improving the slotting positioning accuracy and meeting the high precision requirements of PCB embedded MOSFET processing.

[0017] 2. The PCB board slotting positioning fixture for this PCB embedded MOSFET can flexibly fine-tune the machine height by adjusting the linkage of the servo motor, inner screw and outer screw sleeve in the component, adapting to different positioning environments. For PCB boards of different specifications, the positioning plate spacing can be adjusted by rotating the bidirectional screw and the clamping plate position can be adjusted by rotating the threaded rod, without the need to replace the fixture components, reducing the limitations of use.

[0018] 3. The PCB board slotting and positioning fixture for this embedded MOSFET uses a servo motor to drive two sets of screws with opposite thread directions and a connected shaft to rotate synchronously. This causes the two sets of clamping components on the outer surface of the screws to move closer or further apart, clamping both sides of the PCB board. Simultaneously, the rotation of the connecting shaft causes the connecting sleeve and positioning components on its outer surface to rotate synchronously, causing the positioning plate and rubber positioning points in the positioning components to rotate above the PCB board and apply pressure for positioning. This synchronously limits the position of the PCB board from the top, bottom, and sides, ensuring slotting stability. When using the positioning components, the bidirectional screws can be rotated in advance to adjust the spacing of the positioning plates on the outer surface, thereby adjusting the positioning area of ​​the rubber positioning points on the PCB board to adapt to different needs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a PCB board slotting and positioning fixture for a PCB embedded MOSFET according to the present invention. Figure 2 This is a schematic diagram of the PCB board distribution structure of a PCB board slotting positioning fixture for a PCB embedded MOSFET according to the present invention. Figure 3This is a schematic diagram of the adjustment component structure of a PCB board slotting positioning fixture for a PCB embedded MOSFET according to the present invention. Figure 4 This is a schematic diagram of the positioning component structure of a PCB board slotting positioning fixture for a PCB embedded MOSFET according to the present invention. Figure 5 This is a schematic diagram of another perspective of the PCB board slotting positioning fixture for a PCB embedded MOSFET according to the present invention. Figure 6 This is a schematic diagram of the connection structure of the driving component and the clamping component of a PCB board slotting positioning fixture for a PCB embedded MOSFET according to the present invention.

[0020] In the diagram: 1. Base frame; 2. Support frame one; 3. Outer threaded sleeve; 4. Support frame two; 5. PCB board; 6. Connecting shaft; 7. Connecting sleeve; 8. Adjustment assembly; 801. Servo motor one; 802. Drive roller; 803. Synchronous belt; 804. Inner screw; 805. Transmission roller; 9. Positioning assembly; 901. Connecting seat; 902. Bidirectional screw; 903. Positioning plate; 904. Rubber positioning point; 10. Drive assembly; 1001. Servo motor two; 1002. Mounting bracket; 1003. Guide rod; 1004. Lead screw; 11. Clamping assembly; 1101. Slide clamp; 1102. Threaded rod; 1103. Clamping plate; 1104. Rubber pad; 1105. Slide rod. Detailed Implementation

[0021] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0022] like Figures 1-6As shown, the present invention provides a technical solution: a PCB board slotting and positioning fixture for embedded MOSFETs, comprising a base frame 1, a first support frame 2, an outer threaded sleeve 3, a second support frame 4, a PCB board 5, a connecting shaft 6, a connecting sleeve 7, an adjusting assembly 8, a first servo motor 801, a drive roller 802, a synchronous belt 803, an inner screw 804, a transmission roller 805, a positioning assembly 9, a connecting seat 901, a bidirectional screw 902, a positioning plate 903, rubber positioning points 904, a driving assembly 10, a second servo motor 1001, a mounting bracket 1002, a guide rod 1003, a lead screw 1004, a clamping assembly 11, a sliding clamp 1101, a threaded rod 1102, a clamping plate 1103, a rubber pad 1104, and a sliding rod 1105, with one end of the connecting shaft 6... An external support frame 2 is installed, and a second support frame 4 is installed on the other end of the connecting shaft 6. A drive assembly 10 for providing driving force and clamping is installed at the end of the connecting shaft 6. The drive assembly 10 includes a second servo motor 1001, a mounting frame 1002, a guide rod 1003, and a lead screw 1004. The lead screw 1004 is installed at the output end of the second servo motor 1001, and a clamping assembly 11 for adjusting clamping is threaded on the outer surface of the lead screw 1004. Two sets of clamping assemblies 11 are provided, and the two sets of clamping assemblies 11 have the same structure. A mounting frame 1002 is fixedly installed on one side of the outer surface of the second servo motor 1001, and a guide rod 1003 is provided at the bottom of the mounting frame 1002. A support frame is fixedly installed at the end of the guide rod 1003. Support frame 12 has the same structure as support frame 24. Clamping assembly 11 includes a sliding clamp 1101, a threaded rod 1102, and a clamping plate 1103. The threaded rod 1102 is threaded onto the inside of the sliding clamp 1101, and the clamping plate 1103 is located at the end of the threaded rod 1102. Clamping assembly 11 also includes rubber pads 1104 and sliding rods 1105. Rubber pads 1104 are located on one outer surface of the clamping plate 1103, and sliding rods 1105 are installed on the other side of the clamping plate 1103. The sliding rods 1105 slide within the sliding clamp 1101. The rubber pads 1104 are distributed in a one-to-one correspondence with the clamping plate 1103, and a PCB board 5 is installed between the two sets of rubber pads 1104. This allows for the adjustment of PCB boards 5 of different sizes. The rotation of the threaded rod 1102 causes the clamping plate 1103 to move. The clamping plate 1103, in conjunction with the sliding rod 1105, maintains horizontal movement. This operation facilitates the pre-adjustment of the original position of the clamping plate 1103, allowing the clamping plate 1103 and the positioning plate 903 to precisely engage with the PCB board 5 for multi-position fixation, reducing usage limitations. A guide rod 1003 is slidably mounted inside the sliding clamp 1101 near the lead screw 1004. The connecting sleeve 7 is located on the outer surface of the connecting shaft 6, and a positioning component 9 for auxiliary positioning is installed inside the connecting sleeve 7. The positioning component 9 includes a connecting seat 901, a bidirectional screw 902, a positioning plate 903, and rubber positioning points 904. The bidirectional screw 902 is threaded inside the connecting seat 901.The outer surface of the bidirectional screw 902 is threaded with a positioning plate 903, and a rubber positioning point 904 is installed on one side of the positioning plate 903. Two sets of positioning plates 903 are arranged in a "V" shape, and the positioning plates 903 correspond one-to-one with the rubber positioning points 904. The design of the servo motor 1001 drives the lead screw 1004 and the connecting shaft 6 connected to the lead screw 1004 to move accordingly. This causes the clamping assembly 11 on the outer surface of the lead screw 1004 to move accordingly. Two sets of lead screws 1004 are provided, with opposite thread directions. Therefore, the two sets of clamping assemblies 11 can move closer or further apart due to the design of the lead screw 1004, thus driving the lead screw 1004 to rotate. The clamping assembly 11 moves accordingly, allowing it to clamp the PCB board 5 from both sides. Simultaneously, the connecting shaft 6 moves accordingly, causing the connecting sleeve 7 and positioning assembly 9 on the outer surface of the connecting shaft 6 to rotate. This causes the positioning plate 903 and rubber positioning points 904 in the positioning assembly 9 to rotate and apply pressure from above the PCB board 5 for positioning. This allows for synchronous clamping of the PCB board 5 from both top and side directions, ensuring positional stability during the slotting process. When using the positioning assembly 9, the bidirectional screw 902 can be rotated beforehand, causing the positioning plates 903 on the outer surface of the bidirectional screw 902 to move closer or further apart. This allows for adjustment of the positioning area of ​​the rubber positioning points 904 relative to the PCB board 5 as needed when the connecting shaft 6 rotates.

[0023] Both support frame 1 (2) and support frame 2 (4) have external threaded sleeves (3) installed at their bottoms, and a bottom frame (1) is provided on the top of the external threaded sleeves (3). The bottom frame (1) has a hollow triangular structure inside, with acute angles distributed at all three triangular parts. During use, the bottom frame (1) is fixed to the required working area with bolts. The height is then adjusted using the adjusting component (8). The bottom frame (1) has an adjusting component (8) inside for assisting in height adjustment. The adjusting component (8) includes a servo motor (801), a drive roller (802), a synchronous belt (803), an internal screw (804), and a transmission roller (805). The output end of the servo motor (801) is equipped with the drive roller (802), and the outer surface of the drive roller (802) is connected to the transmission roller (805) via the synchronous belt (803). The top of the transmission roller (805) is equipped with an internal screw (804). The screw 804 is threaded inside the outer threaded sleeve 3, and the outer threaded sleeve 3 and the inner screw 804 are distributed in a one-to-one correspondence. The adjustment component 8 consists of a servo motor 801, a drive roller 802, a synchronous belt 803, an inner screw 804, and a transmission roller 805. When the servo motor 801 is started, the output end drives the drive roller 802 to rotate at a uniform speed. The drive roller 802 drives the transmission roller 805 to rotate coaxially through the synchronous belt 803, ensuring that the transmission speed on both sides is consistent and without deviation. The top of the transmission roller 805 is fixedly connected to the inner screw 804. The inner screw 804 and the outer threaded sleeve 3 are connected in a one-to-one correspondence and threaded engagement. When the inner screw 804 rotates in the forward and reverse directions, it makes a vertical linear motion along the inside of the outer threaded sleeve 3, which synchronously drives the support frame 2, the support frame 4, and all the upper components to rise and fall smoothly.

[0024] In summary, as Figures 1-6As shown, this PCB embedded MOSFET PCB board slotting positioning fixture, in use, the base frame 1 is fixed to the required working area with bolts as needed. Then, the height is adjusted using the adjusting component 8. The adjusting component 8 consists of a servo motor 801, a drive roller 802, a synchronous belt 803, an inner screw 804, and a transmission roller 805. The power transmission principle is as follows: starting the servo motor 801, the output end drives the drive roller 802 to rotate at a uniform speed. The drive roller 802 synchronously drives the transmission roller 805 to rotate coaxially via the synchronous belt 803, ensuring consistent and unbiased transmission speeds on both sides. The top of the transmission roller 805 is fixedly connected to the inner screw 804, which corresponds one-to-one with the outer threaded sleeve 3 and is threadedly engaged. When 804 rotates forward and backward, it moves vertically along the inside of the outer threaded sleeve 3, simultaneously driving the support frame 1 2, support frame 2 4, and all upper components to rise and fall smoothly. After the height is adjusted to the correct position, the positioning component 9 completes the front positioning of the PCB board 5, preventing slot position deviation. The positioning component 9 is assembled inside the connecting sleeve 7 outside the connecting shaft 6. The component includes a connecting seat 901, a bidirectional screw 902, a positioning plate 903, and rubber positioning points 904. The operator manually rotates the bidirectional screw 902, using bidirectional thread transmission to drive the left and right sets of positioning plates 903 to move towards each other or away from each other synchronously. The two sets of positioning plates 903 are symmetrically distributed in a V-shape, which can adapt to PCB boards 5 of different widths. Rubber positioning points 904 are arranged on one side of the positioning plate 903. By finely adjusting the spacing of the positioning plates 903, the pressing position of the rubber positioning point 904 can be calibrated, accurately fitting the edge positioning area of ​​the PCB board 5, and locking the processing reference in advance. At the same time, the flexible rubber positioning point 904 does not damage the PCB board surface or scratch the substrate. The drive assembly 10 includes a servo motor 1001, a mounting bracket 1002, a guide rod 1003, and a lead screw 1004. The servo motor 1001 is fixed on the mounting bracket 1002. After starting, the output end drives the lead screw 1004 to rotate. The lead screw 1004 synchronously drives the connecting shaft 6 to rotate coaxially. The whole machine is equipped with two sets of lead screws 1004 with opposite thread directions. The guide rod 1003 guides the clamping assembly 11 throughout the entire process to prevent slippage and deflection. The PCB board is clamped on both sides: there are two sets of clamping assemblies 11 with identical structures. The assembly includes a sliding clamp 1101, a threaded rod 1102, a clamping plate 1103, a rubber pad 1104, and a sliding rod 1105. First, the threaded rod 1102 is rotated to push the clamping plate 1103 horizontally and smoothly along the sliding rod 1105. The initial position of the clamping plate 1103 is pre-adjusted to ensure precise engagement with the positioning plate 903 in the positioning assembly 9, preparing for subsequent synchronous limiting. Then, the double-sided lead screws 1004 rotate in opposite directions, causing the two sets of sliding clamps 1101 to move synchronously towards each other, fitting against the side of the PCB board 5, until the rubber pad 1104 on the inner side of the clamping plate 1103 is tightly fitted against the side wall of the PCB board 5, providing flexible anti-slip protection and preventing damage to the substrate, thus completing the double-sided horizontal limiting. Simultaneously, as the lead screws 1004 rotate, the clamping assembly 11 clamps the PCB board, and the connecting shaft 6 rotates synchronously.The outer connecting sleeve 7 and positioning component 9 rotate synchronously, causing the positioning plate 903 and rubber positioning point 904 to rotate to the upper surface of the PCB board 5. This applies uniform downward flexible pressure, achieving three-dimensional synchronous limiting of upper surface clamping and double-sided clamping, completely locking the PCB board 5 and preventing vertical movement, horizontal shifting, or rotational misalignment during the grooving process, ensuring grooving accuracy throughout.

[0025] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A PCB board slotting and positioning fixture for a PCB embedded MOSFET, comprising a connecting shaft (6) and a connecting sleeve (7), characterized in that: One end of the connecting shaft (6) is externally mounted with a support frame 1 (2), and the other end of the connecting shaft (6) is externally mounted with a support frame 2 (4). The end of the connecting shaft (6) is mounted with a drive assembly (10) for providing driving force clamping. The drive assembly (10) includes a servo motor 2 (1001), a mounting frame (1002), a guide rod (1003), and a lead screw (1004). The output end of the servo motor 2 (1001) is mounted with a lead screw (1004), and the outer surface of the lead screw (1004) is threaded with a clamping assembly (11) for adjusting clamping. The mounting frame (1002) is fixedly mounted on one side of the outer surface of the servo motor 2 (1001), and the bottom of the mounting frame (1002) is provided with a guide rod (1003). The clamping assembly (11) includes a slide clamp (1101) and a threaded rod (1102). The connecting sleeve (7) is located on the outer surface of the connecting shaft (6), and a positioning component (9) for auxiliary positioning is installed inside the connecting sleeve (7). The connecting sleeve (901) has a connecting seat (901), a bidirectional screw (902), a positioning plate (903), and a rubber positioning point (904). The connecting seat (901) has a connecting thread (902), and the outer surface of the bidirectional screw (902) has a positioning plate (903). A rubber positioning point (904) is installed on one side of the positioning plate (903).

2. The PCB board slotting and positioning fixture for a PCB embedded MOSFET according to claim 1, characterized in that: The positioning plate (903) is provided in two sets, and the two sets of positioning plates (903) are distributed in a "V" shape, and the positioning plates (903) are distributed in a one-to-one correspondence with the rubber positioning points (904).

3. The PCB board slotting and positioning fixture for a PCB embedded MOSFET according to claim 1, characterized in that: The clamping assembly (11) further includes a rubber pad (1104) and a slide bar (1105), and a rubber pad (1104) is provided on one outer surface of the clamping plate (1103), and a slide bar (1105) is installed on the other side of the clamping plate (1103), and the slide bar (1105) is slidably disposed inside the slide clamp (1101).

4. The PCB board slotting and positioning fixture for a PCB embedded MOSFET according to claim 1, characterized in that: Both the support frame one (2) and the support frame two (4) are equipped with external threaded sleeves (3) at their bottoms, and the top of the external threaded sleeves (3) is provided with a bottom frame (1).

5. The PCB board slotting and positioning fixture for a PCB embedded MOSFET according to claim 4, characterized in that: The bottom frame (1) has a hollow triangular structure inside, and the triangles are all distributed with acute angles.

6. The PCB board slotting positioning fixture for a PCB embedded MOSFET according to claim 5, characterized in that: The bottom frame (1) is provided with an adjustment component (8) for assisting height adjustment. The adjustment component (8) includes a servo motor (801), an active roller (802), a synchronous belt (803), an inner screw (804), and a transmission roller (805). The output end of the servo motor (801) is equipped with an active roller (802), and the outer surface of the active roller (802) is provided with a transmission roller (805) through the synchronous belt (803). The top of the transmission roller (805) is equipped with an inner screw (804).

7. The PCB board slotting and positioning fixture for a PCB embedded MOSFET according to claim 6, characterized in that: The inner screw (804) is threaded inside the outer screw sleeve (3), and the outer screw sleeve (3) and the inner screw (804) are distributed in a one-to-one correspondence.

8. The PCB board slotting positioning fixture for a PCB embedded MOSFET according to claim 1, characterized in that: The end of the guide rod (1003) is fixedly installed with a support frame one (2), and the support frame one (2) has the same structure as the support frame two (4).

9. The PCB board slotting and positioning fixture for a PCB embedded MOSFET according to claim 1, characterized in that: The clamping assembly (11) is provided in two sets, and the two sets of clamping assemblies (11) have the same structure.

10. The PCB board slotting and positioning fixture for a PCB embedded MOSFET according to claim 3, characterized in that: The rubber pads (1104) are distributed in a one-to-one correspondence with the clamping plate (1103), and a PCB board (5) is installed between the two sets of rubber pads (1104).

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