Magnetic core bonding tool

Abstract

The utility model provides a magnetic core bonding tool, relates to printed board preparation frock technical field, base, steel mesh and crimping subassembly, be equipped with first support and second support on the base, be equipped with butterfly screw on the first support and second support, be equipped with butterfly locking nut on the butterfly screw, be equipped with the steel mesh on the steel mesh and be equipped with the crimping subassembly on the steel mesh. A first pressing block is arranged at the end, close to the base, of the butterfly screw, the steel mesh is detachably arranged on the base, an opening is formed in the steel mesh, the crimping assembly comprises a third support, a crimping screw, a crimping locking nut, a round pressing block and a second pressing block, the third support is arranged on the base, the crimping screw is arranged on the third support, and the crimping locking nut is arranged on the round pressing block. The circular pressing block is arranged at one end, close to the base, of the crimping screw, a magnetic core positioning groove is formed in the second pressing block, a printed board positioning groove is formed in the base, a magnetic core positioning groove is formed in the printed board positioning groove, and the second pressing block is located in the printed board positioning groove. According to the utility model, the magnetic core bonding rejection rate can be reduced, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of printed circuit board preparation tooling technology, specifically to a magnetic core bonding tooling. Background Technology

[0002] With the development of the electronics industry, power module packaging is trending towards miniaturization. In existing power systems, discrete transformers occupy a large space and require pin soldering, which is not conducive to the miniaturization of power modules. To address this, embedding the magnetic core inside the printed circuit board (PCB) reduces the space and area occupied by the transformer. The saved space and area can be used for a more rational layout of other components and a reduction in the size of the power module, providing a good solution for high-density and miniaturization of power modules. The process of embedding the magnetic core requires gluing the upper and lower magnetic cores to the PCB. However, controlling the amount of glue applied to the bonding surface, the relative positions of the upper and lower magnetic cores, and the overall height of the bonding is difficult. This can lead to problems such as glue overflow contaminating the board surface, misalignment of the magnetic cores, inconsistent bonding heights, and large differences in inductance. Summary of the Invention

[0003] This utility model provides a magnetic core bonding fixture, which solves the problem that the process of embedding magnetic cores into printed circuit boards requires the upper and lower magnetic cores to be glued to the printed circuit board. However, it is difficult to control the amount of glue applied to the bonding surface, the relative position of the upper and lower magnetic cores, and the overall height of the magnetic core bonding. It can effectively reduce the scrap rate of magnetic core bonding and improve production efficiency and product quality.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A magnetic core bonding fixture, comprising:

[0006] The base is provided with a magnetic core positioning groove, a first bracket and a second bracket. The magnetic core positioning groove is located between the first bracket and the second bracket. The first bracket and the second bracket are provided with wing screws. Wing screws are installed with wing lock nuts. A first pressure block is provided at one end of the wing screw near the base.

[0007] A steel mesh, which is detachably mounted on the base, has openings.

[0008] A crimping assembly includes a third bracket, a crimping screw, a crimping locking nut, a circular pressure block, and a second pressure block. The third bracket is mounted on a base, the crimping screw is mounted on the third bracket, the crimping locking nut is fitted onto the crimping screw, the circular pressure block is located at the end of the crimping screw near the base, and the circular pressure block abuts against the second pressure block. The second pressure block has multiple sleeve holes and a magnetic core positioning groove. The base has a printed circuit board positioning groove, and the magnetic core positioning groove is located within the printed circuit board positioning groove.

[0009] Furthermore, the base is provided with square positioning pins and round positioning pins, and the steel mesh is provided with square positioning holes and round positioning holes.

[0010] Furthermore, the base and steel mesh are square structures.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0012] In actual use, the magnetic core is placed in the magnetic core positioning groove between the first and second brackets. Then, the steel mesh is installed and tightened using the wing screws on the brackets. Adhesive is then applied to the steel mesh and scraped onto the magnetic core bonding surface with a scraper. Next, the magnetic core with adhesive is placed into the magnetic core positioning groove (located on the bottom surface of the printed circuit board) within the printed circuit board positioning groove. The printed circuit board assembly is then placed into the PCB positioning groove. Another magnetic core (located on the top surface of the printed circuit board) is then aligned with the magnetic core below the printed circuit board. A second pressure block is then placed on the printed circuit board assembly. The second pressure block has a sleeve hole and a magnetic core positioning groove. The sleeve hole on the second pressure block corresponds to the pins on the printed circuit board assembly. The combination of these two elements allows the magnetic core positioning groove on the second pressure block to limit the magnetic core's position. Finally, rotating the pressing screw moves the circular pressure block downwards, applying pressure to the second pressure block, thus firmly bonding the magnetic core to both sides of the printed circuit board.

[0013] This invention uses a steel mesh opening to transfer a fixed amount of adhesive to the bonding surface of the magnetic core, ensuring a uniform amount of adhesive on each core. Then, the position and height of the bonded magnetic core relative to the printed circuit board are accurately controlled through the cooperation of the second pressure block, the printed circuit board positioning groove on the base, and the magnetic core positioning groove. This invention effectively reduces the scrap rate of bonded magnetic cores and improves production efficiency and product quality. Attached Figure Description

[0014] Figure 1 This is a top view of the structure of this utility model without the steel mesh installed;

[0015] Figure 2 This is a top view of the structure of the present invention with a steel mesh installed.

[0016] Figure 3 This is a front view structural diagram of the present utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the crimping assembly in this utility model.

[0018] Markings and component names in the diagram:

[0019] 1-Base, 2-First bracket, 3-Second bracket, 4-Wing screw, 5-Wing lock nut, 6-First pressure block, 7-Steel mesh, 8-Opening, 9-Third bracket, 10-Crimp screw, 11-Crimp lock nut, 12-Second pressure block, 13-Printed circuit board positioning groove, 141-Magnetic core positioning groove, 15-Square positioning pin, 16-Round positioning pin, 17-Square positioning hole, 18-Round positioning hole, 19-Printed circuit board, 20-Magnetic core, 21-Round pressure block, 22-Sleeve hole. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings.

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] This embodiment provides a magnetic core bonding fixture, such as Figures 1-4 As shown, it includes:

[0023] The base 1 has a magnetic core positioning groove 141, a first bracket 2, and a second bracket 3. The magnetic core positioning groove 141 is located between the first bracket 2 and the second bracket 3. The first bracket 2 and the second bracket 3 are provided with wing screws 4, and wing lock nuts 5 are installed on the wing screws 4. A first pressure block 6 is provided at one end of the wing screw 4 near the base 1. The wing screw 4 is movably mounted on the first bracket 2 and the second bracket 3. Specifically, the first bracket 2 and the second bracket 3 are provided with internal threads that mate with the wing screw 4.

[0024] Steel mesh 7 is detachably mounted on the base 1, and the steel mesh 7 is provided with an opening 8.

[0025] The crimping assembly includes a third bracket 9, a crimping screw 10, a crimping locking nut 11, a circular pressure block 21, and a second pressure block 12. The third bracket 9 is mounted on the base 1, and the crimping screw 10 is mounted on the third bracket 9. The third bracket 9 has an internal thread that mates with the crimping screw 10. The crimping locking nut 11 is fitted onto the crimping screw 10. The circular pressure block 21 is located at the end of the crimping screw 10 near the base 1 and abuts against the second pressure block 12. The second pressure block 12 has multiple sleeve holes and a magnetic core positioning groove 141. The base 1 has a printed circuit board positioning groove 13, in which the magnetic core positioning groove 141 is located. The second pressing block 12 has two magnetic core positioning grooves 141. The base 1 is provided with a printed circuit board positioning groove 13, and the printed circuit board positioning groove 13 is provided with magnetic core positioning grooves 141. The number of magnetic core positioning grooves 141 is two. The sleeve holes 22 on the second pressing block are arranged in two parallel rows, and the distance between the two rows of sleeve holes 22 is greater than the diameter of the circular pressing block 21.

[0026] In actual use, the magnetic core is placed in the magnetic core positioning groove 141 between the first bracket 2 and the second bracket 3. Then, the steel mesh 7 is installed and pressed tightly with the wing screws 4 on the first bracket 2 and the second bracket 3. Then, glue is applied to the steel mesh 7 and the glue is scraped onto the magnetic core bonding surface with a scraper. Then, the magnetic core with glue is placed into the magnetic core positioning groove 141 (this magnetic core is on the bottom surface of the printed circuit board) in the printed circuit board positioning groove 13. Then, the printed circuit board assembly 19 is placed into the printed circuit board positioning groove 13. Then, another magnetic core (this magnetic core is on the top surface of the printed circuit board) is aligned with the magnetic core under the printed circuit board and installed. Then, the second pressure block 12 is placed on the printed circuit board assembly 19. The second pressure block 12 has a sleeve hole 22 and a magnetic core positioning groove 141. The sleeve hole 22 on the second pressure block 12 corresponds to the pin on the printed circuit board assembly 19. The two are combined to limit the magnetic core positioning groove 141 on the second pressure block 12. Finally, by rotating the pressing screw 10, the circular pressure block 21 moves downward to apply pressure to the second pressure block 12, thereby making the magnetic core firmly adhered to both sides of the printed circuit board.

[0027] This invention uses a steel mesh opening 8 to transfer a fixed amount of adhesive to the bonding surface of the magnetic core, ensuring a uniform amount of adhesive on each magnetic core. Then, through the cooperation of the second pressure block 12, the printed circuit board positioning groove 13 on the base 1, the magnetic core positioning groove 141, and the second pressure block 12 and the printed circuit board positioning groove 13, the position and height of the magnetic core relative to the printed circuit board after bonding are accurately controlled. This invention effectively reduces the scrap rate of magnetic core bonding and improves production efficiency and product quality.

[0028] The above embodiment is further optimized by providing a square positioning pin 15 and a circular positioning pin 16 on the base 1, and a square positioning hole 17 and a circular positioning hole 18 on the steel mesh 7. In actual use, the steel mesh 7 is fixed to the base 1 by the cooperation of the square positioning pin 15 with the square positioning hole 17 and the circular positioning pin 16 with the circular positioning hole 18.

[0029] The above embodiment is further optimized by making the base 1 and the steel mesh 7 into a square structure.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A magnetic core bonding tool characterized by, The utility model relates to a kind of printed circuit board automatic assembly machine, including: Base (1), the base (1) is provided with magnetic core positioning slot (141), first support (2) and second support (3), the magnetic core positioning slot (141) is between first support (2) and second support (3), first support (2) and second support (3) are provided with butterfly screw (4), butterfly screw (4) is installed with butterfly lock nut (5), the end of butterfly screw (4) close to base (1) is provided with first pressing block (6); Steel mesh (7), the steel mesh (7) is detachably arranged on the base (1), and the steel mesh (7) is provided with opening (8) for injecting glue; Compression assembly, the compression assembly includes third support (9), compression screw (10), compression lock nut (11), circular pressing block (21) and second pressing block (12), the third support (9) is arranged on base (1), the compression screw (10) is arranged on third support (9), the compression lock nut (11) is sleeved on compression screw (10), the circular pressing block (21) is arranged at the end of compression screw (10) close to base (1), the circular pressing block (21) is abutted with the second pressing block (12), the second pressing block (12) is provided with a plurality of sleeve holes (22), the second pressing block (12) is provided with magnetic core positioning slot (141), the base (1) is provided with printed board positioning slot (13), and the magnetic core positioning slot (141) is arranged in printed board positioning slot (13).

2. A magnetic core bonding tool according to claim 1, wherein The base (1) is provided with square positioning pin (15) and circular positioning pin (16), and the steel mesh (7) is provided with square positioning hole (17) and circular positioning hole (18).

3. A magnetic core bonding tool according to claim 1, wherein The base (1) and the steel mesh (7) are square structures.

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