Method of assembling parts on a printed circuit board

A method of manufacturing a print board assembly, comprising the steps of:

• designating a work frame for each of a plurality of different types of the printed circuit boards to be produced in a soldering unit for soldering printed circuit boards;
• inserting in a correspond work frame component parts of each of said printed circuit boards into corresponding ones of said plurality of different types of the printed circuit board, placing each of said plurality of different types of the printed circuit boards into a carrier, transferring each of said plurality of different types of the printed circuit boards to the soldering unit in said carrier;
• making soldered circuit boards in the soldering unit by soldering said different types of the printed circuit boards held by said carriers;
• returning the soldered circuit boards to designated work frames, and inspecting the soldered circuit boards while the soldered circuit boards are in said designated work frames;
• and
• checking each carrier returning the soldered circuit board so as to give the printed circuit board to the work frame designated.

A method of manufacturing a print board assembly, which is implemented in a system including a multitude of work frames to insert parts into different types of printed circuit boards, and upper and lower conveyors to transfer carriers having the printed circuit board installed therein, the method comprising the steps of:

• transferring the carriers having different types of the printed circuit board assembled, from the work frames to the upper conveyor;
• moving the carriers being apart from each other at a regular distance on theupper conveyor;
• automatically soldering the printed circuit board installed in the carriers at a soldering unit;
• moving the carriers soldered at the soldering unit on the lower conveyor, the carriers being apart from each other at a regular distance on the lower conveyor;
• discriminating the types of the carriers on the lower conveyor and returning each of them to a designated one of the work frames, thereby producing different types of print board assembly in a production line covering from assembly to inspection of products.

A method of manufacturing a printer board assembly, which is implemented in a system having a multitude of computers for displaying parts insertion instructions by parts on a monitor every time a worker presses a switch in order for the worker to insert the parts sequentially, the parts insertion instructions including information about the parts such as position to insert, name and quantity thereof, a multitude of base boards, a multitude of work frames, and upper and lower conveyors for transferring the carriers having differenttypes of printed circuit board installed therein, the method comprising the steps of:

• identifying parts to insert from the parts insertion instructions displayed on the monitor of each computer, taking the parts out of the base boards to insert them into different types of the printed circuit board in the work frame, and transferring the carriers having different types of the printed circuit board to the upper conveyor;
• moving the carriers being apart from each other at a regular distance on theupper conveyor;
• automatically soldering the printed circuit boards installed in the carriers at a soldering unit and moving them down to the lower conveyor;
• moving the carriers being apart from each other at a regular distance on thelower conveyor;
• and
• discriminating the carriers by their types and returning them to each of the work frames designated, thereby producing different types of the printed circuit board in a production line covering from assembly to inspection of products by the work frames.

A method for assembling a printed circuit board, comprising the steps of:

• placing a carrier with an affixed printed circuit board on a conveyor;
• inserting parts into the printed circuit board at a work frame;
• transferring the carrier and affixed printed circuit board by the conveyor to a spray flux station and soldering unit;
• and
• automatically returning said carrier and affixed printed circuit board by the conveyor to said work frame for inspection of the soldered printed circuit board.