US 5,564,183 AGranted

Producing system of printed circuit board and method therefor

AssigneeMatsushita Electric Industrial Co., Ltd.

InventorsKenichi Satou, Makoto Kawai, Yoshifumi Nakao, Satoshi Masuda, Koichi Kanematsu, Setsuo Horimoto

Life of this patent

Estimating the term…

Loading patent…

Abstract

An assembly line includes a printing device for printing solder on a land of a circuit board, a mounting device for mounting an electric component at a predetermined position of the solder, and a soldering device for soldering the land to a terminal of the component. A monitored items detecting device detects predetermined to be monitored items of the board and equipment used in the printing, mounting, or soldering devices, and a control device analyzes a condition of the equipment and quality of the board with reference to warning criterion which do not exceed failure criterion, and then dynamically controls the various devices accordingly.

Claims14

Dependent claims

A system for producing a circuit board having electronic components mounted, comprising:

a printing device for printing solder on lands of the circuit board;
an electronic component mounting device, operatively positioned downstream of said printing device, for mounting the electronic components on the circuit board at predetermined positions of the solder printed on the lands of the circuit board;
a soldering device, operatively positioned downstream of said electronic component mounting device, for soldering the lands of the circuit board to respective terminals of the electronic components mounted on the circuit board;
monitored items detecting means for detecting predetermined items to be monitored including predetermined characteristics of the circuit board and predetermined operating states of at least one of said printing device, said electronic component mounting device, and said soldering device;
control means for analyzing an operating condition of system and an assembly quality of the circuit board based on a result of a comparison between the monitored items detected by said monitored items detecting means and predetermined warning criterion, said warning criterion being less than predetermined failure criterion;
and
monitoring means for outputting an analyzing result of said control means to a monitor.

4 more elements

A method of producing a circuit board on which an electronic component is mounted, comprising:

applying the circuit board to assembly line equipment which effect predetermined assembly processes including printing solder on a land of the circuit board, mounting the electronic component on the circuit board at a predetermined position of the solder, and soldering the land of the circuit board to a terminal of the electronic component;
detecting predetermined items to be monitored, including predetermined operating states of the assembly line equipment and predetermined characteristics of the circuit board, of at least one of the printing, mounting, and soldering processes;
analyzing an operating condition of the assembly line equipment and a quality of the circuit board on the basis of a comparison between warning criterion, which are less than failure criterion, and the monitored items detected in said detecting step;
and
outputting an analyzing result obtained in said analyzing step to a monitor.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/129,604Filed 30 Sep 1993
Priority: JP 4-26044930 Sep 1992
Granted: 15 Oct 1996
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

B23K 31/12
Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups…:…
H05K 13/083
Monitoring manufacture of assemblages: quality monitoring using results from monitoring devices, e.g. feedback loops
B23K 2101/42
Electric or electronic devices: printed circuits
G01R 31/2806
Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]: apparatus therefor, e.g. test…