A positioning jig and assembly method for dispensing PCBA board

Abstract

The application relates to the PCBA board dispensing technical field, in particular to a positioning jig for PCBA board dispensing and an assembling method, the positioning jig comprises a jig upper plate, a jig lower plate and a magnetic core positioning plate, the magnetic core positioning plate is arranged, a limiting groove for placing an E-shaped magnetic core is arranged at the groove bottom of each placing groove, and a plurality of limiting through grooves for accommodating I-shaped magnetic cores are arranged on the magnetic core positioning plate, so that the E-shaped magnetic core and the I-shaped magnetic core can be effectively limited, sliding dislocation between the E-shaped magnetic core and the I-shaped magnetic core is prevented, a plurality of magnetic core pressing members are installed on the jig upper plate, one end of each magnetic core pressing member penetrates through the jig upper plate to press the I-shaped magnetic core in the corresponding limiting through groove, so that the E-shaped magnetic core and the I-shaped magnetic core can be effectively pressed, and the E-shaped magnetic core and the I-shaped magnetic core are ensured to be closely attached.

Description

Technical Field

[0001] This invention relates to the field of PCBA board dispensing technology, and in particular to a positioning fixture and assembly method for PCBA board dispensing. Background Technology

[0002] With the intelligent, diversified, and rapid development of the electronics market, and to meet the needs of different customers and application scenarios, power module products with different packaging designs have emerged. In the field of power modules, the transformer is a crucial component, and its design significantly impacts the performance of the power module. However, with the continuous miniaturization of electronic products, some circuit boards have limited layout space. The space occupied by traditional skeleton transformers is clearly insufficient for application requirements. Therefore, power modules using planar transformer solutions have emerged. Planar transformers not only occupy less space but also offer more stable performance compared to skeleton transformers, and they also have cost advantages. Planar transformers rely heavily on magnetic cores, which are a vital component. The quality of magnetic core assembly affects the transformer's performance, ultimately impacting the product's performance. Magnetic core assembly requires dispensing, making it a critical process. Therefore, dispensing fixtures that meet the mass production needs and quality requirements of production lines play a crucial role.

[0003] Existing dispensing fixtures typically only have an upper and a lower plate. The PCBA board to be dispensed is placed between the upper and lower plates and fixed in place by the upper and lower plates. For PCBA boards with combined magnetic cores, this can cause misalignment of the magnetic cores on opposite sides of the PCBA board during dispensing. If there is misalignment between the magnetic cores and the gap is too large, it will seriously affect the performance of the transformer. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a positioning fixture and assembly method for dispensing adhesive on PCBA boards, which can prevent the two magnetic cores on the PCBA board from being misaligned, and can realize mass production operation, thereby improving production efficiency and reducing production costs.

[0005] To solve the above-mentioned technical problems, the first technical solution adopted by the present invention is as follows:

[0006] A positioning fixture for dispensing adhesive onto a PCBA board, the PCBA board having a combined magnetic core, the combined magnetic core including an E-type magnetic core and an I-type magnetic core, the E-type magnetic core and the I-type magnetic core being respectively disposed on opposite sides of the PCBA board and in contact with each other, the positioning fixture including a lower fixture plate, at least two dispensing positioning areas being provided on one side of the lower fixture plate, each dispensing positioning area having a plurality of placement slots for placing PCBA boards, one PCBA board being placed in one placement slot, each placement slot having a limiting groove for placing an E-type magnetic core at its bottom, each dispensing positioning area being configured with a magnetic core positioning plate and a fixture upper plate, the magnetic core positioning plate being located between the fixture upper plate and the dispensing positioning area;

[0007] The magnetic core positioning plate is provided with several limiting through slots for accommodating type I magnetic cores. The limiting through slots and limiting grooves are arranged in a one-to-one correspondence. The magnetic core positioning plate is also provided with several clearance through slots for avoiding components on the PCBA board.

[0008] The upper plate of the fixture is equipped with several magnetic core clamping components. One end of each magnetic core clamping component penetrates through the upper plate of the fixture to clamp the I-type magnetic core in its corresponding limiting groove. The upper plate of the fixture is provided with several dispensing grooves, which are arranged opposite to the dispensing area of ​​the PCBA board.

[0009] The second technical solution adopted in this invention is:

[0010] An assembly method for a positioning fixture for dispensing adhesive onto a PCBA board includes the following steps:

[0011] Step S1: Place several E-type magnetic cores one by one into the corresponding limiting grooves on the lower plate of the fixture;

[0012] Step S2: Place several PCBA boards one by one into several placement slots that already contain E-type magnetic cores;

[0013] Step S3: Cover with the magnetic core positioning plate;

[0014] Step S4: Place several type I magnetic cores one by one into the corresponding limiting slots on the magnetic core positioning plate;

[0015] Step S5: Cover the upper plate of the fixture and make the core clamping component clamp the assembled type I core.

[0016] The beneficial effects of this invention are as follows:

[0017] This solution utilizes a core positioning plate with limiting grooves at the bottom of each placement slot for E-type cores and several limiting through slots on the positioning plate for I-type cores. This effectively limits the movement of E-type and I-type cores, preventing them from sliding or misaligning. Several core clamping components are mounted on the upper plate of the fixture, each penetrating through the upper plate to clamp the corresponding I-type core in its limiting through slot. This effectively holds the E-type and I-type cores in place, ensuring a tight fit. Furthermore, the fixture can accommodate multiple PCBA boards, enabling mass production using dispensing equipment, thus improving production efficiency and reducing costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the positioning fixture for dispensing adhesive onto PCBA boards according to the present invention;

[0019] Figure 2 This is an exploded view of the positioning fixture for dispensing adhesive onto PCBA boards according to the present invention.

[0020] Figure 3 This is a schematic diagram of the lower plate of the positioning fixture for dispensing adhesive onto a PCBA board according to the present invention.

[0021] Figure 4 The positioning fixture for dispensing adhesive onto PCBA boards according to the present invention Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This is a partial structural diagram of the positioning fixture for dispensing adhesive onto a PCBA board according to the present invention;

[0023] Figure 6 The positioning fixture for dispensing adhesive onto PCBA boards according to the present invention Figure 5 Enlarged view of point B in the middle;

[0024] Figure 7 This is a schematic diagram of the magnetic core positioning plate of the positioning fixture for dispensing adhesive onto PCBA boards according to the present invention.

[0025] Figure 8 This is a schematic diagram of the cover plate of the positioning fixture for dispensing adhesive onto PCBA boards according to the present invention.

[0026] Figure 9 This is a flowchart illustrating the assembly method of the positioning fixture for dispensing adhesive onto a PCBA board according to the present invention.

[0027] Label Explanation:

[0028] 1. PCBA board; 2. E-type magnetic core; 3. I-type magnetic core; 4. Fixture lower plate; 41. Glue dispensing positioning area; 42. Placement slot; 421. Limiting groove; 43. Rotating fastener; 5. Magnetic core positioning plate; 51. Limiting through groove; 52. Clearance through groove; 6. Fixture upper plate; 61. Cover plate; 611. Glue dispensing through groove; 612. Recessed opening; 62. Fixing base; 63. Limiting block; 64. Rotating handle; 7. Magnetic core clamping component. Detailed Implementation

[0029] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0030] Please refer to Figure 1 One technical solution adopted in this invention is as follows:

[0031] A positioning fixture for dispensing adhesive onto a PCBA board, the PCBA board having a combined magnetic core, the combined magnetic core including an E-type magnetic core and an I-type magnetic core, the E-type magnetic core and the I-type magnetic core being respectively disposed on opposite sides of the PCBA board and in contact with each other, the positioning fixture including a lower fixture plate, at least two dispensing positioning areas being provided on one side of the lower fixture plate, each dispensing positioning area having a plurality of placement slots for placing PCBA boards, one PCBA board being placed in one placement slot, each placement slot having a limiting groove for placing an E-type magnetic core at its bottom, each dispensing positioning area being configured with a magnetic core positioning plate and a fixture upper plate, the magnetic core positioning plate being located between the fixture upper plate and the dispensing positioning area;

[0032] The magnetic core positioning plate is provided with several limiting through slots for accommodating type I magnetic cores. The limiting through slots and limiting grooves are arranged in a one-to-one correspondence. The magnetic core positioning plate is also provided with several clearance through slots for avoiding components on the PCBA board.

[0033] The upper plate of the fixture is equipped with several magnetic core clamping components. One end of each magnetic core clamping component penetrates through the upper plate of the fixture to clamp the I-type magnetic core in its corresponding limiting groove. The upper plate of the fixture is provided with several dispensing grooves, which are arranged opposite to the dispensing area of ​​the PCBA board.

[0034] As can be seen from the above description, the beneficial effects of the present invention are as follows:

[0035] This solution utilizes a core positioning plate with limiting grooves at the bottom of each placement slot for E-type cores and several limiting through slots on the positioning plate for I-type cores. This effectively limits the movement of E-type and I-type cores, preventing them from sliding or misaligning. Several core clamping components are mounted on the upper plate of the fixture, each penetrating through the upper plate to clamp the corresponding I-type core in its limiting through slot. This effectively holds the E-type and I-type cores in place, ensuring a tight fit. Furthermore, the fixture can accommodate multiple PCBA boards, enabling mass production using dispensing equipment, thus improving production efficiency and reducing costs.

[0036] Furthermore, the lower plate of the fixture is provided with several sets of clamping mechanisms. Each magnetic core positioning plate is equipped with one clamping mechanism. The clamping mechanism includes two fastening components. The two fastening components are symmetrically arranged on both sides of the magnetic core positioning plate, and both fastening components are rotatably connected to the lower plate of the fixture.

[0037] Furthermore, the magnetic core positioning plate is square in shape, and the fastening assembly includes two rotating fasteners, with the four rotating fasteners respectively corresponding to the four right angles of the magnetic core positioning plate.

[0038] As can be seen from the above description, by setting four rotating fasteners, and with the four rotating fasteners respectively corresponding to the four right angles of the magnetic core positioning plate, the magnetic core positioning plate can be fixed more stably, and the E-type magnetic core and I-type magnetic core can be pressed more effectively, further ensuring that the E-type magnetic core and I-type magnetic core are tightly fitted together.

[0039] Furthermore, the rotating fastener includes a rotating shaft and a rotating block. One end of the rotating shaft is fixed to the side of the lower plate of the fixture near the magnetic core positioning plate. The rotating block is sleeved on the outer wall of the opposite end of the rotating shaft and is rotatably connected to the rotating shaft.

[0040] As described above, after the magnetic core positioning plate is placed on, the four rotating blocks are rotated to fix the magnetic core positioning plate in place. This effectively presses down the E-type magnetic core and the I-type magnetic core, thus ensuring that the E-type magnetic core and the I-type magnetic core fit together tightly.

[0041] Furthermore, the shape of the limiting groove is adapted to the shape of the E-type magnetic core.

[0042] Furthermore, the shape of the limiting groove is adapted to the shape of the type I magnetic core.

[0043] Furthermore, several of the placement slots are arranged in an array.

[0044] As can be seen from the above description, the array of several placement slots can accommodate more PCBA boards, thus enabling mass production operations using dispensing equipment, improving production efficiency and reducing production costs.

[0045] Furthermore, the magnetic core clamping component is a pressure column made of elastic material.

[0046] Furthermore, each dispensing positioning area of ​​the lower plate of the fixture is provided with several positioning posts, and each magnetic core positioning plate is provided with several positioning holes that cooperate with the positioning posts.

[0047] Please refer to Figure 9 Another technical solution adopted in this invention is:

[0048] An assembly method for a positioning fixture for dispensing adhesive onto a PCBA board includes the following steps:

[0049] Step S1: Place several E-type magnetic cores one by one into the corresponding limiting grooves on the lower plate of the fixture;

[0050] Step S2: Place several PCBA boards one by one into several placement slots that already contain E-type magnetic cores;

[0051] Step S3: Cover with the magnetic core positioning plate;

[0052] Step S4: Place several type I magnetic cores one by one into the corresponding limiting slots on the magnetic core positioning plate;

[0053] Step S5: Cover the upper plate of the fixture and make the core clamping component clamp the assembled type I core.

[0054] As can be seen from the above description, the beneficial effects of the present invention are as follows:

[0055] This solution positions several E-type magnetic cores by placing them one by one into corresponding limiting grooves on the lower plate of the fixture (the size of the limiting grooves can be designed according to the size of the E-type magnetic core). Next, several PCBA boards are placed into the slots containing the E-type magnetic cores. Then, a magnetic core positioning plate is placed on top, effectively pressing down on the E-type and I-type magnetic cores, ensuring a tight fit. Next, several I-type magnetic cores are placed into corresponding limiting slots on the magnetic core positioning plate. A high-precision magnetic core positioning steel plate enables precise assembly and fitting of the two magnetic cores, effectively preventing misalignment after assembly. Finally, the upper plate of the fixture is placed on top, and the magnetic core clamping components press the assembled I-type magnetic cores firmly. This positioning fixture can accommodate multiple PCBA boards, allowing for mass production using dispensing equipment, improving production efficiency and reducing production costs.

[0056] Please refer to Figures 1 to 8 As shown, Embodiment 1 of the present invention is as follows:

[0057] Please refer to Figures 1 to 8 A positioning fixture for dispensing adhesive onto a PCBA board 1, wherein the PCBA board 1 has a combined magnetic core, the combined magnetic core including an E-type magnetic core 2 and an I-type magnetic core 3, the E-type magnetic core 2 and the I-type magnetic core 3 are respectively disposed on opposite sides of the PCBA board 1, and the E-type magnetic core 2 and the I-type magnetic core 3 are in contact with each other. The positioning fixture includes a lower fixture plate 4, and at least two dispensing positioning areas 41 are provided on one side of the lower fixture plate 4. Each dispensing positioning area 41 is provided with a plurality of placement slots 42 for placing the PCBA board 1 (in this embodiment, the number of placement slots 42 in each dispensing positioning area 41 is 16). One PCBA board 1 is placed in one placement slot 42. The bottom of each placement slot 42 is provided with a limiting groove 421 for placing the E-type magnetic core 2. Each dispensing positioning area 41 is configured with a magnetic core positioning plate 5 and a fixture upper plate 6, the magnetic core positioning plate 5 being located between the fixture upper plate 6 and the dispensing positioning area 41.

[0058] In this embodiment, the lower fixture plate 4, the magnetic core positioning plate 5, and the upper fixture plate 6 are all made of aluminum alloy.

[0059] Please refer to Figure 6 and Figure 7 The magnetic core positioning plate 5 is provided with a plurality of limiting through slots 51 for accommodating type I magnetic core 3. The limiting through slots 51 and the limiting grooves 421 are respectively arranged one-to-one. The magnetic core positioning plate 5 is also provided with a plurality of avoidance through slots 52 for avoiding components on PCBA board 1.

[0060] Please refer to Figure 1 , Figure 2 and Figure 8 The upper plate 6 of the fixture is equipped with a plurality of magnetic core clamping parts 7. One end of each magnetic core clamping part 7 penetrates through the upper plate 6 of the fixture to clamp the I-type magnetic core 3 in the corresponding limiting groove 51. The upper plate 6 of the fixture is provided with a plurality of dispensing grooves 611, which are arranged opposite to the dispensing area of ​​the PCBA board 1.

[0061] Please refer to Figure 1 The lower plate 4 of the fixture is provided with several sets of clamping mechanisms. Each magnetic core positioning plate 5 is equipped with one clamping mechanism. The clamping mechanism includes two fastening components. The two fastening components are symmetrically arranged on both sides of the magnetic core positioning plate 5, and both fastening components are rotatably connected to the lower plate 4 of the fixture.

[0062] Please refer to Figure 1 and Figure 7The magnetic core positioning plate 5 is square in shape, and the fastening assembly includes two rotating fasteners 43, which are respectively set at the four right angles of the magnetic core positioning plate 5.

[0063] Please refer to Figure 1 The rotating fastener 43 includes a rotating shaft and a rotating block. One end of the rotating shaft is fixed to the side of the lower plate 4 of the fixture near the magnetic core positioning plate 5. The rotating block is sleeved on the outer wall of the opposite end of the rotating shaft and is rotatably connected to the rotating shaft.

[0064] Please refer to Figure 4 The shape of the limiting groove 421 is adapted to the shape of the E-type magnetic core 2.

[0065] Please refer to Figure 7 The shape of the limiting groove 51 is adapted to the shape of the type I magnetic core 3.

[0066] Several of the placement slots 42 are arranged in an array.

[0067] The magnetic core clamping component 7 is a pressure column made of elastic material.

[0068] Please refer to Figure 1 Each dispensing positioning area 41 of the lower plate 4 of the fixture is provided with a number of positioning posts, and each magnetic core positioning plate 5 is provided with a number of positioning holes that cooperate with the positioning posts.

[0069] Please refer to Figure 1 , Figure 2 , Figure 5 and Figure 8 The upper plate 6 of the fixture includes a cover plate 61 and two fixing seats 62. The two fixing seats 62 are symmetrically arranged on opposite sides of the magnetic core positioning plate 5. The opposite ends of the cover plate 61 are respectively installed on the two fixing seats 62. Several magnetic core clamping parts 7 and dispensing grooves 611 are all arranged on the cover plate 61. Limiting blocks 63 are installed on both fixing seats 62. The edges of the opposite ends of the cover plate 61 are recessed inward to form recesses 612 that cooperate with the limiting blocks 63. The limiting blocks 63 are located in the recesses 612. A rotating handle 64 is rotatably installed at the center of the limiting block 63. The opposite ends of the rotating handle 64 are provided with tail wings. The width of the rotating handle 64 is greater than the width of the recesses 612. In this way, the cover plate 61 and the two fixing seats 62 form a detachable structure, which facilitates the replacement of the cover plate 61.

[0070] Please refer to Figure 9 As shown, Embodiment 2 of the present invention is as follows:

[0071] An assembly method for a positioning fixture for dispensing adhesive onto a PCBA board 1 includes the following steps:

[0072] Step S1: Place several E-type magnetic cores 2 one by one into several corresponding limiting grooves 421 on the lower plate 4 of the fixture (the size of the limiting grooves 421 can be designed according to the size of the E-type magnetic cores 2) to position the E-type magnetic cores 2.

[0073] Step S2: Place several PCBA boards 1 one by one into several placement slots 42 that already contain E-type magnetic cores 2;

[0074] Step S3: Cover the magnetic core positioning plate 5. The magnetic core positioning plate 5 and the lower plate of the fixture 4 are positioned and assembled by means of positioning holes and positioning pins. After the magnetic core positioning plate 5 is covered, rotate the four rotating fasteners 43 to fix the magnetic core positioning plate 5. This can effectively press the E-type magnetic core 2 and the I-type magnetic core 3, thereby ensuring that the E-type magnetic core 2 and the I-type magnetic core 3 are tightly fitted.

[0075] Step S4: Place several type I magnetic cores 3 one by one into several corresponding limiting slots 51 on the magnetic core positioning plate 5. The high-precision magnetic core positioning steel plate realizes the precise assembly and matching of the upper and lower magnetic cores (the size of the limiting slots 51 is determined according to the size of the type I magnetic core 3), effectively preventing misalignment after the two magnetic cores are assembled and matched.

[0076] Step S5: Cover the upper plate 6 of the fixture and make the core clamping component 7 clamp the assembled type I core 3. The core clamping component 7 is designed to correspond to the position of the type I core 3.

[0077] The upper plate 6 and the lower plate 4 of the fixture are also positioned and assembled using positioning holes and positioning pins. After the upper plate 6 is assembled in place, the handle 64 is rotated so that the cover plate 61 is stably installed on the two fixed seats 62.

[0078] In summary, the positioning fixture and assembly method for dispensing PCBA boards provided by this invention effectively limit the movement of E-type and I-type magnetic cores by setting a magnetic core positioning plate and providing limiting grooves for placing E-type magnetic cores at the bottom of each placement slot, and providing several limiting through slots for accommodating I-type magnetic cores on the magnetic core positioning plate. This prevents the E-type and I-type magnetic cores from sliding or misaligning. By installing several magnetic core clamping members on the upper plate of the fixture, with one end of each clamping member penetrating the upper plate to clamp the I-type magnetic core in its corresponding limiting through slot, the E-type and I-type magnetic cores are effectively pressed together, ensuring a tight fit. Furthermore, the fixture can accommodate multiple PCBA boards, enabling mass production using dispensing equipment, improving production efficiency and reducing production costs.

[0079] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A positioning fixture for dispensing adhesive onto a PCBA board, the PCBA board having a combined magnetic core, the combined magnetic core comprising an E-type magnetic core and an I-type magnetic core, the E-type magnetic core and the I-type magnetic core being respectively disposed on opposite sides of the PCBA board, and the E-type magnetic core and the I-type magnetic core being in contact, the positioning fixture comprising a lower fixture plate, characterized in that, The lower plate of the fixture has at least two dispensing positioning areas on one side. Each dispensing positioning area has several placement slots for placing PCBA boards. One PCBA board is placed in one placement slot. The bottom of each placement slot has a limiting groove for placing an E-type magnetic core. Each dispensing positioning area is equipped with a magnetic core positioning plate and a fixture upper plate. The magnetic core positioning plate is located between the fixture upper plate and the dispensing positioning area. The magnetic core positioning plate is provided with several limiting through slots for accommodating type I magnetic cores. The limiting through slots and limiting grooves are arranged in a one-to-one correspondence. The magnetic core positioning plate is also provided with several clearance through slots for avoiding components on the PCBA board. The upper plate of the fixture is equipped with several magnetic core clamping components. One end of each magnetic core clamping component penetrates through the upper plate of the fixture to clamp the I-type magnetic core in its corresponding limiting groove. The upper plate of the fixture is provided with several dispensing grooves, which are arranged opposite to the dispensing area of ​​the PCBA board.

2. The positioning jig for dispensing glue on PCBA board according to claim 1, wherein, The lower plate of the fixture is provided with several sets of clamping mechanisms. Each magnetic core positioning plate is equipped with one clamping mechanism. The clamping mechanism includes two fastening components. The two fastening components are symmetrically arranged on both sides of the magnetic core positioning plate, and both fastening components are rotatably connected to the lower plate of the fixture.

3. The positioning fixture for dispensing adhesive onto PCBA boards according to claim 2, characterized in that, The magnetic core positioning plate is square in shape, and the fastening assembly includes two rotating fasteners, with the four rotating fasteners respectively set at the four right angles of the magnetic core positioning plate.

4. The positioning fixture for dispensing adhesive onto PCBA boards according to claim 3, characterized in that, The rotating fastener includes a rotating shaft and a rotating block. One end of the rotating shaft is fixed to the side of the lower plate of the fixture near the magnetic core positioning plate. The rotating block is sleeved on the outer wall of the opposite end of the rotating shaft and is rotatably connected to the rotating shaft.

5. The positioning fixture for dispensing adhesive onto PCBA boards according to claim 1, characterized in that, The shape of the limiting groove is adapted to the shape of the E-type magnetic core.

6. The positioning jig for dispensing glue on PCBA board according to claim 1, wherein, The shape of the limiting slot is adapted to the shape of the type I magnetic core.

7. The positioning jig for dispensing glue on PCBA board according to claim 1, wherein, Several of the placement slots are arranged in an array.

8. The positioning fixture for dispensing adhesive onto PCBA boards according to claim 1, characterized in that, The magnetic core clamping component is a pressure column made of elastic material.

9. The positioning jig for dispensing glue on PCBA board according to claim 1, wherein, Each dispensing positioning area on the lower plate of the fixture is provided with several positioning posts, and each magnetic core positioning plate is provided with several positioning holes that cooperate with the positioning posts.

10. An assembly method of the positioning jig for dispensing PCBA board according to claim 1, characterized in that, Includes the following steps: Step S1: Place several E-type magnetic cores one by one into the corresponding limiting grooves on the lower plate of the fixture; Step S2: Place several PCBA boards one by one into several placement slots that already contain E-type magnetic cores; Step S3: Cover with the magnetic core positioning plate; Step S4: Place several type I magnetic cores one by one into the corresponding limiting slots on the magnetic core positioning plate; Step S5: Cover the upper plate of the fixture and make the core clamping component clamp the assembled type I core.

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