Circuit board assembly soldering apparatus and circuit board assembly soldering method

Patent metadata

Field	Value
Publication number	US-12303990-B2
Application number	US-202218042050-A
Country	US
Kind code	B2
Filing date	Sep 14, 2022
Priority date	Oct 13, 2021
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

This application provides a circuit board assembly soldering apparatus and corresponding method. The soldering apparatus is provided with at least two bearing seats on a base plate, the bearing seats are located in a space between the base plate and a pressing plate assembly, the bearing seats each include a workbench, the workbench is located on a side of the bearing seat that faces the pressing plate assembly, a circuit board assembly is placed on the workbench. At least one adjustable bearing seat is provided, and a spacing between the workbench of the adjustable bearing seat and the base plate is adjustable. Further, a spacing between the workbench of the adjustable bearing seat and the pressing plate assembly is adjusted, to implement soldered connection between circuit board assemblies with different thicknesses, and the soldering apparatus can connect at least two circuit board assemblies by soldering at a single time.

First claim

What is claimed is:

1. A circuit board assembly soldering method, comprising:
placing first circuit boards on workbenches of bearing seats in a one-to-one correspondence, wherein to-be-soldered surfaces of the first circuit boards face a pressing plate assembly;
stacking second circuit boards on the first circuit boards on the workbenches in a one-to-one correspondence, wherein to-be-soldered surfaces of the second circuit boards face the first circuit boards;
pressing the pressing plate assembly on the second circuit boards on the workbenches;
adjusting a spacing between a workbench of each adjustable bearing seat and a base plate, so that a bearing pressure on each workbench is within a preset pressure range; and
connecting the second circuit boards to the first circuit boards by melting solder paste on the circuit board assembly with at least one first laser;
cutting at least one of the of the first circuit boards or the second circuit boards with at least one second laser; wherein
the at least one first laser is provided on a side of the pressing plate assembly that faces away from the base plate, and laser light emitted by the at least one first laser penetrates the pressing plate assembly and is irradiated onto the circuit board assembly on the workbenches; and
the at least one second laser is provided on a side of the pressing plate assembly that faces the base plate, and the at least one second laser is located in a gap between adjacent bearing seats.

2. The circuit board assembly soldering method according to claim 1 , wherein each of the bearing seats is the adjustable bearing seat; and the pressing the pressing plate assembly on the second circuit boards on the workbenches, and the adjusting the spacing between the workbench of each adjustable bearing seat and a base plate, so that the bearing pressure on each workbench is within the preset pressure range specifically comprises:
pressing the pressing plate assembly on each of the second circuit boards, so that a bearing pressure on at least one workbench is within the preset pressure range, and a bearing pressure on the rest of the workbenches is less than a minimum pressure value within the preset pressure range, or so that bearing pressures on all the workbenches are less than a minimum pressure value within the preset pressure range; and
increasing a spacing between the base plate and the workbench whose bearing pressure is less than the minimum pressure value within the preset pressure range, so that the bearing pressures on all the workbenches are within the preset pressure range.

3. The circuit board assembly soldering method according to claim 1 , wherein the bearing seats comprise one fixed bearing seat; and the pressing the pressing plate assembly on the second circuit boards on the workbenches, and the adjusting the spacing between the workbench of each adjustable bearing seat and the base plate, so that the bearing pressure on each workbench is within the preset pressure range specifically comprises:
pressing the pressing plate assembly on each of the second circuit boards, so that a bearing pressure on a workbench of the fixed bearing seat is within the preset pressure range, and a bearing pressure on the workbench of each adjustable bearing seat is less than a minimum pressure value within the preset pressure range; and
increasing the spacing between the workbench of each adjustable bearing seat and the base plate, so that the bearing pressure on the workbench of each adjustable bearing seat is within the preset pressure range.

4. The circuit board assembly soldering method according to claim 1 , wherein one of a first circuit board of the first circuit boards and a second circuit board of the second circuit boards is a printed circuit board, and the other is a flexible circuit board.

5. A circuit board assembly soldering apparatus, comprising:
a base plate, a pressing plate assembly, at least two bearing seats, and at least two lasers, wherein the pressing plate assembly is oppositely provided above the base plate, the bearing seats are mounted on the base plate, and the bearing seats are located between the pressing plate assembly and the base plate; the bearing seats each comprise a workbench, the workbench is located on a side of the bearing seat that faces the pressing plate assembly, the workbench is configured to place the circuit board assembly, and the pressing plate assembly is configured to be pressed on the circuit board assembly located on the workbench; and the circuit board assembly comprises a first circuit board and a second circuit board that are stacked on the workbench in a one-to-one correspondence, and the second circuit board is located on a side of the first circuit board that faces away from the workbench; wherein
the at least two bearing seats comprise at least one adjustable bearing seat, and a spacing between the workbench of the adjustable bearing seat and the base plate is adjustable;
the at least two lasers comprise at least one first laser and at least one second laser;
the at least one first laser is provided on a side of the pressing plate assembly that faces away from the base plate, and laser light emitted by the at least one first laser penetrates the pressing plate assembly and is irradiated onto the circuit board assembly on the workbench; and
the at least one second laser is provided on a side of the pressing plate assembly that faces the base plate, and the at least one second laser is located in a gap between adjacent bearing seats.

6. The circuit board assembly soldering apparatus according to claim 5 , wherein the at least two bearing seats each further comprise a support frame, the support frame is connected between the workbench and the base plate, and the support frame of the adjustable bearing seat is capable of adjusting a height of the workbench relative to the base plate.

7. The circuit board assembly soldering apparatus according to claim 6 , wherein the support frame of the adjustable bearing seat comprises at least one support column, and the support column is supported on the base plate.

8. The circuit board assembly soldering apparatus according to claim 7 , wherein the workbench of the adjustable bearing seat is fastened to a top end of the support column, and a height of the support column of the adjustable bearing seat is adjustable.

9. The circuit board assembly soldering apparatus according to claim 7 , wherein the workbench of the adjustable bearing seat is movably connected to the support column and is capable of moving along an axial direction of the support column, and the workbench of the adjustable bearing seat is capable of being fastened to different parts of the support column.

10. The circuit board assembly soldering apparatus according to claim 9 , wherein the support column of the adjustable bearing seat is inserted into the workbench, and a telescopic elastic part is sleeved outside the support column, and both ends of the elastic part respectively abut against the workbench and the base plate.

11. The circuit board assembly soldering apparatus according to claim 5 , wherein the workbench of the adjustable bearing seat is internally provided with a pressure sensor.

12. The circuit board assembly soldering apparatus according to claim 5 , wherein the at least two bearing seats comprise one fixed bearing seat, and a spacing between a workbench of the fixed bearing seat and the base plate is fixed.

13. The circuit board assembly soldering apparatus according to claim 12 , wherein the pressing plate assembly is provided with a pressure sensor, or the workbench of the fixed bearing seat is provided with a pres

Assignees

• Honor Device Co Ltd

Inventors

• Guo Jianqiang
• Luo Wenjun
• Li Mingchuan

Classifications

• H05K2203/0147

  Carriers and holders · CPC title

• H05K3/363

  by soldering · CPC title

• B23K3/087

  Soldering or brazing jigs, fixtures or clamping means · CPC title

• B23K3/047

  electric · CPC title

• B23K1/0056

  soldering by means of beams, e.g. lasers, electron beams [EB] · CPC title