Bidirectional pressing and bonding magnetic core tooling

Abstract

The utility model belongs to tool fixture technical field relates to a kind of two-way compression magnetic core bonding tool, including carrier plate, pressing plate and the spacing plate between the carrier plate and the pressing plate, multiple pressing plate positioning columns and spacing plate positioning column are equipped on the carrier plate, locking member is connected between the carrier plate and the pressing plate, the upper end surface of the carrier plate is equipped with multiple PCB installation slot, the bottom of the PCB installation slot is equipped with lower magnetic core limit block, the upper end surface of the lower magnetic core limit block is equipped with lower magnetic core limit slot, multiple upper magnetic core limit slots are equipped on the spacing plate, multiple elastic PIN components are equipped on the pressing plate at the position above the upper magnetic core limit slot.This application can satisfy the demand of PCB product double-sided bonding magnetic core, practicality is strong, the reaction force of the lower magnetic core limit block and elastic PIN component under pressure can be respectively compressed lower magnetic core and upper magnetic core on PCB product, prevent insufficient inductance due to gap, without the aid of clip, operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to a bidirectional pressing magnetic core bonding tooling. Background Technology

[0002] Magnetic cores are a common type of magnetic material used in electronic components, typically made of ferrite, amorphous alloys, nanocrystalline alloys, or other high-permeability materials. They are mainly used in circuits for energy storage, filtering, signal transmission, and electromagnetic interference suppression. When bonding magnetic cores to PCB products, magnetic core adhesive needs to be applied to the PCB, then the PCB and magnetic core are installed in a fixture, and finally placed in an oven for curing. After applying the adhesive, a certain gap remains between the magnetic core and the PCB, which can lead to inductance mismatch. This requires clamping the magnetic core to the PCB, a cumbersome process. Furthermore, existing fixtures can only meet the needs of single-sided magnetic core bonding, which is quite limiting. Therefore, this invention proposes a bidirectional pressing magnetic core bonding fixture. Utility Model Content

[0003] The main objective of this invention is to provide a bidirectional pressing magnetic core bonding fixture to solve the problems mentioned in the background art, such as the cumbersome operation of existing magnetic core bonding fixtures that require clamping the magnetic core and PCB products and the limitation of being only applicable to single-sided magnetic core bonding.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a bidirectional pressing magnetic core bonding fixture, comprising a carrier plate, a pressure plate, and a limiting plate disposed between the carrier plate and the pressure plate. The carrier plate is provided with a plurality of pressure plate positioning posts and limiting plate positioning posts. A locking component is connected between the carrier plate and the pressure plate. The upper end face of the carrier plate is provided with a plurality of PCB mounting slots. A lower magnetic core limiting block is floatingly disposed at the bottom of the PCB mounting slot. The upper end face of the lower magnetic core limiting block is provided with a lower magnetic core limiting groove. The limiting plate is provided with a plurality of upper magnetic core limiting grooves. The pressure plate is provided with a plurality of spring pin components located above the upper magnetic core limiting grooves.

[0005] Preferably, the lower magnetic core limiting block includes a limiting part and an anti-detachment part located at the lower end of the limiting part. The size of the anti-detachment part is larger than the size of the limiting part. The lower magnetic core limiting groove is provided on the limiting part. The carrier plate is provided with a through hole that matches the limiting part. The limiting part is movably connected in the through hole. A baffle is fixed on the lower end face of the carrier plate at a position below the through hole. Anti-detachment receiving grooves are provided on a pair of opposite surfaces of the carrier plate and the baffle. A spring positioning hole is provided on the lower end face of the anti-detachment part. A first spring is connected in the spring positioning hole. The first spring is in a compressed state.

[0006] Preferably, the pressure plate is provided with multiple through mounting holes, the spring pin assembly is fixed in the mounting holes, the spring pin assembly includes a cylindrical shell with an open bottom, the shell is provided with a segmented guide post with a small diameter section facing upward and a large diameter section facing downward, the bottom end of the guide post is movably connected in the shell, the top end of the guide post penetrates the upper end surface of the shell, the top end of the guide post is provided with a retaining spring, the small diameter section of the guide post located in the shell is fitted with a second spring, the second spring is in a compressed state, and a Teflon cap is fixed to the lower end surface of the guide post.

[0007] Preferably, the locking component includes multiple arc-shaped notches around the pressure plate, a shim is provided on the upper surface of the carrier plate, a cuboid knob is rotatably connected to the shim via a pivot coaxial with the center of the arc-shaped notch, side plates are provided at the bottom of both sides of the arc-shaped notch, the lower end of the side plate is flush with the lower end of the pressure plate, and a knob clearance groove matching the knob is formed between the two side plates.

[0008] The beneficial effects of this utility model's technical solution are:

[0009] The bottom of the PCB mounting slot is provided with a floating lower magnetic core limiting block for positioning the lower magnetic core, and the limiting plate is provided with an upper magnetic core limiting groove for positioning the upper magnetic core, thereby enabling magnetic core bonding on both sides of the PCB product, making it more practical.

[0010] The pressure plate is provided with multiple spring pin assemblies located above the upper magnetic core limiting groove. The bottom of the lower magnetic core limiting block is connected to a spring. The pressure plate is pressed and fixed on the carrier plate by the locking member. The reaction force of the spring pin assembly and the spring after being compressed presses the upper magnetic core and the lower magnetic core onto the PCB product, respectively, to prevent gaps between the magnetic core and the PCB product that would cause incompatibility in sensitivity. Moreover, no additional clamps are needed for clamping and fixing, making the operation simple. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the bidirectional pressing magnetic core bonding fixture structure for an embodiment.

[0012] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0013] Figure 3 This is a schematic diagram of the limiting plate structure.

[0014] Figure 4 This is a schematic diagram of the lower magnetic core limiting block structure.

[0015] The numbers in the image represent:

[0016] 1. Carrier plate; 2. Pressure plate; 3. Limiting plate; 4. Pressure plate positioning post; 5. Limiting plate positioning post; 6. PCB mounting slot; 7. Lower magnetic core limiting block; 8. Lower magnetic core limiting slot; 9. Upper magnetic core limiting slot; 10. Spring pin assembly; 11. Limiting part; 12. Anti-detachment part; 13. Through hole; 14. Baffle; 15. Anti-detachment part receiving slot; 16. Lower magnetic core; 17. Spring positioning hole; 18. First spring; 19. Mounting hole; 20. Housing; 21. Guide post; 22. Snap ring; 23. Second spring; 24. Teflon cap; 25. Notch; 26. Elevating block; 27. Knob; 28. Side plate; 29. ​​Knob clearance slot; 30. Upper magnetic core. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to specific embodiments.

[0018] Example:

[0019] like Figure 1-4 As shown, a bidirectional pressing magnetic core bonding fixture of this utility model includes a carrier plate 1, a pressure plate 2, and a limiting plate 3 disposed between the carrier plate 1 and the pressure plate 2. The carrier plate 1 is provided with a plurality of pressure plate positioning posts 4 and limiting plate positioning posts 5. A locking member is connected between the carrier plate 1 and the pressure plate 2. The upper end face of the carrier plate 1 is provided with a plurality of PCB mounting slots 6. PCB positioning posts are provided in the PCB mounting slots 6. A lower magnetic core limiting block 7 is floating at the bottom of the PCB mounting slot 6. A lower magnetic core limiting groove 8 is provided on the upper end face of the lower magnetic core limiting block 7. The limiting plate 3 is provided with a plurality of upper magnetic core limiting grooves 9. A plurality of spring pin assemblies 10 are provided on the pressure plate 2 above the upper magnetic core limiting grooves 9.

[0020] The lower magnetic core limiting block 7 includes a limiting part 11 and an anti-detachment part 12 located at the lower end of the limiting part 11. The size of the anti-detachment part 12 is larger than the size of the limiting part 11. The lower magnetic core limiting groove 8 is provided on the limiting part 11. The carrier plate 1 is provided with a through hole 13 that matches the limiting part 11. The limiting part 11 is movably connected in the through hole 13. A baffle 14 is fixed on the lower end face of the carrier plate 1 at a position below the through hole 13. Anti-detachment receiving grooves 15 are provided on a pair of opposite surfaces of the carrier plate 1 and the baffle 14. A spring positioning hole 17 is provided on the lower end face of the anti-detachment part 12. A first spring 18 is connected in the spring positioning hole 17. The first spring 18 is in a compressed state.

[0021] The pressure plate 2 is provided with a plurality of through mounting holes 19. The spring pin assembly 10 is fixed in the mounting holes 19. The spring pin assembly 10 includes a cylindrical housing 20 with an open bottom end. The housing 20 is provided with a segmented guide post 21 with the small diameter section facing upward and the large diameter section facing downward. The bottom end of the guide post 21 is movably connected to the housing 20. The top end of the guide post 21 penetrates the upper end surface of the housing 20. The top end of the guide post 21 is provided with a retaining spring 22. The small diameter section of the guide post 21 located inside the housing 20 is fitted with a second spring 23. The second spring 23 is in a compressed state. The lower end surface of the guide post 21 is fixed with a Teflon cap 24.

[0022] The locking component includes multiple arc-shaped notches 25 around the pressure plate 2. The upper surface of the carrier plate 1 is provided with a shim block 26. A cuboid knob 27 is rotatably connected to the shim block 26 via a rotating shaft coaxial with the center of the arc-shaped notch 25. Side plates 28 are provided at the bottom of both sides of the arc-shaped notch 25. The lower end surface of the side plate 28 is flush with the lower end surface of the pressure plate 2. A knob clearance groove 29 matching the knob 27 is formed between the two side plates 28.

[0023] The usage process of this embodiment is as follows: The lower magnetic core 16 is placed into the lower magnetic core limiting groove 8; the PCB product is placed into the PCB mounting groove 6; the limiting plate 3 is installed onto the carrier plate 1; the upper magnetic core is installed into the upper magnetic core limiting groove 9; the pressure plate 2 is placed on the limiting plate 3; the pressure plate 2 is pressed down until the bottom end of the knob 27 is higher than the upper end surface of the side plate 28; the knob 27 is rotated until it is perpendicular to the knob clearance groove 29, and the bottom end of the knob 27 abuts against the upper end surface of the side plate 28, thereby fixing the pressure plate 2 and the carrier plate 1; the pressure plate 2 is pressed down further... During the process, the Teflon cap 24 abuts against the upper end face of the upper magnetic core, the guide post 21 slides upward along the housing 20, the second spring 23 is compressed, and the reaction force provided by the second spring 23 presses on the upper magnetic core, pressing the upper magnetic core tightly. The pressure plate 2 presses on the limiting plate 3, the limiting plate 3 presses on the PCB product, and the PCB product presses the lower magnetic core and the lower magnetic core limiting block 7 downward. The first spring 18 is compressed, and the reaction force of the first spring 18 presses the lower magnetic core limiting block 7 and the lower magnetic core tightly onto the PCB product. The assembled PCB product and magnetic core are then sent into the oven for curing.

[0024] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A bidirectional pressing magnetic core bonding fixture, characterized in that: The device includes a carrier plate, a pressure plate, and a limiting plate disposed between the carrier plate and the pressure plate. The carrier plate is provided with multiple pressure plate positioning posts and limiting plate positioning posts. A locking component connects the carrier plate and the pressure plate. The upper end face of the carrier plate is provided with multiple PCB mounting slots. A lower magnetic core limiting block is floating at the bottom of the PCB mounting slot. The upper end face of the lower magnetic core limiting block is provided with a lower magnetic core limiting groove. The limiting plate is provided with multiple upper magnetic core limiting grooves. The pressure plate is provided with multiple spring pin components located above the upper magnetic core limiting grooves.

2. The bidirectional pressing magnetic core bonding fixture according to claim 1, characterized in that: The lower magnetic core limiting block includes a limiting part and an anti-detachment part located at the lower end of the limiting part. The size of the anti-detachment part is larger than the size of the limiting part. The lower magnetic core limiting groove is provided on the limiting part. The carrier plate is provided with a through hole that matches the limiting part. The limiting part is movably connected in the through hole. A baffle is fixed on the lower end face of the carrier plate below the through hole. Anti-detachment receiving grooves are provided on a pair of opposite surfaces of the carrier plate and the baffle. A spring positioning hole is provided on the lower end face of the anti-detachment part. A first spring is connected in the spring positioning hole and is in a compressed state.

3. The bidirectional pressing magnetic core bonding fixture according to claim 1, characterized in that: The pressure plate is provided with multiple through mounting holes. The spring pin assembly is fixed in the mounting holes. The spring pin assembly includes a cylindrical shell with an open bottom. The shell is provided with a segmented guide post with a small diameter section facing upward and a large diameter section facing downward. The bottom end of the guide post is movably connected to the shell. The top end of the guide post penetrates the upper end surface of the shell. The top end of the guide post is provided with a retaining spring. The small diameter section of the guide post located inside the shell is fitted with a second spring. The second spring is in a compressed state. The lower end surface of the guide post is fixed with a Teflon cap.

4. The bidirectional pressing magnetic core bonding fixture according to claim 1, characterized in that: The locking component includes multiple arc-shaped notches around the pressure plate. The upper surface of the carrier plate is provided with a shim block. A cuboid knob is rotatably connected to the shim block via a rotating shaft coaxial with the center of the arc-shaped notch. Side plates are provided at the bottom of both sides of the arc-shaped notch. The lower end surface of the side plate is flush with the lower end surface of the pressure plate. A knob clearance groove matching the knob is formed between the two side plates.

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