JP2001091229A - Inspection data creation method for cream solder printing inspection equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a method capable of creating inspection data capable of performing an inspection with high accuracy reflecting manufacturing know-how at a mounting site in a short time. SOLUTION: Inspection data for inspecting a cream solder printing state is created from processing (manufacturing) data 2 of a metal mask used when printing cream solder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection of a cream solder printing inspection apparatus for inspecting a printing state of cream solder printed on a printed circuit board by a cream solder printing apparatus in a process of mounting an electronic component on the printed circuit board. Data creation method.

[0002]

2. Description of the Related Art Generally, in a process of mounting an electronic component on a printed circuit board, a cream solder printing apparatus prints cream solder on the printed circuit board. In this case, in order to inspect the printing state of the cream solder, in recent years, electronic components mounted on the printed circuit board have been made into chips and miniaturized, and it is not possible to manually inspect the printing state of the cream solder. It is difficult to use a cream solder print inspection apparatus that automatically checks the print state of the cream solder by using an imaging unit such as a color camera to check the print state of the cream solder.

In this cream solder printing inspection apparatus, inspection is performed according to inspection data for inspecting the printing state of cream solder.

Conventionally, a method of using the mounting position data of an electronic component to obtain inspection data of a cream solder printing inspection apparatus for inspecting the printing state of the cream solder, and a design data of a metal mask for cream solder printing are used. There was a method and a method of creating inspection data manually.

The method of using the mounting position data of the electronic component is based on the mounting position data of the electronic component such as data for manufacturing a printed circuit board and the data of a mounting machine and the component shape data of each electronic component. This is a method for creating print inspection data.

In this method, since the printing information of the cream solder must be registered in advance for each component shape, there is an inconvenience that the work of creating the inspection data becomes complicated.

The method of using the design data of the metal mask for cream solder printing is a method of creating cream solder print inspection data from the data at the time of designing the metal mask.

[0008] In this method, inspection data can be quickly created. However, in the cream solder printing process, when manufacturing a metal mask due to the know-how of manufacturing at the mounting site, the size of the opening of the metal mask is reduced. And the shape is slightly changed. Therefore, the metal mask is not manufactured according to the design data of the metal mask,
There was a problem that accurate inspection could not be expected.

Furthermore, the method of manually creating inspection data has a disadvantage that it takes a long time to create inspection data of a cream solder printing inspection apparatus, and the operator who creates this inspection data has a problem in that the allowable value of inspection is reduced. There was a problem with variation.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to make it possible to create inspection data that can be inspected with high accuracy by reflecting manufacturing know-how at a mounting site in a short time.

[0011]

According to the present invention, there is provided a method for producing inspection data of a cream solder printing inspection apparatus for inspecting a cream solder printing state from processing (manufacturing) data of a metal mask used when printing cream solder. Inspection data is created.

According to the present invention, since the processing (manufacturing) data of the metal mask is used to generate the inspection data, the inspection data that can be inspected with high accuracy and reflects the know-how of the manufacturing at the mounting site is obtained. Can be created in a short time.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an inspection data creating method of a cream solder printing inspection apparatus according to the present invention will be described with reference to the drawings.

Generally, in a process of mounting an electronic component on a printed board, a cream solder printing apparatus prints cream solder on the printed board. A cream solder print inspection apparatus is used in which an image pickup means such as a color camera is used to inspect the print state of the cream solder, and the print state of the cream solder is automatically inspected. In this cream solder printing inspection device,
This inspection is performed according to inspection data for inspecting the printing state of the cream solder.

In this embodiment, the inspection data is obtained by the configuration shown in FIG.

In FIG. 1, reference numeral 1 denotes an inspection data creation device. Reference numeral 2 denotes processing (manufacturing) data of the metal mask for processing (manufacturing) the metal mask for cream solder printing of the cream solder printing apparatus. The processing data 2 of the metal mask is stored in a data storage means such as a floppy disk or a network. The data is input to the metal mask processing data input unit 3 of the inspection data creation device 1 from a communication means such as a (LAN).

An example of the processing data 2 of the metal mask is, for example, data in a format called GERBER as shown in FIG. 2, and is widely used as processing data of a printed circuit board.

The metal mask processing data 2 input to the metal mask processing data input unit 3 is supplied to a metal mask opening shape generation unit 4 which generates the metal mask processing data 2. It is converted into the shape and size of the opening of the metal mask.

The shape of the opening of the metal mask generated from the metal mask processing data 2 by the metal mask opening shape generator 4 is as shown in FIG. 3, for example.
There is almost no error for the metal mask actually used in the cream solder printing apparatus.

In general, it is desirable to determine whether the printing condition of the cream solder is good or not by checking whether the printing shape and size of the cream solder completely match the shape and size of the opening of the metal mask. Accurately grasping the shape and dimensions of the part is very important for inspecting the printed state of the cream solder.

When inspecting the printing state of the actual cream solder, it is rare to inspect all the printing locations.
Inspect only those parts that have quality problems. In this example, a part to be inspected is selected by the inspection part selecting part 5, and the processing data of the metal mask of the part to be inspected is selected and supplied to the inspection data generating part 6.

In general, since the printing quality of cream solder at printing has a very strong causal relationship with the shape and size of the opening of the metal mask, in this example, the inspection item and the allowable value storage unit 7 are previously stored in the metal mask. Inspection items and permissible values for the opening shape and dimensions are registered, and the inspection items and permissible values from the permissible value storage unit 7 are supplied to the inspection data generation unit 6. In step 6, the optimum inspection item and allowable value for each opening are determined, and the creation of cream solder print inspection data is completed.

The cream solder print inspection data is output to the cream solder print inspection device via the output unit 8 as cream solder print inspection data 9. In this case, the cream solder print inspection data 9 is supplied to the cream solder print inspection apparatus by a data storage means such as a floppy disk or a communication means such as a network (LAN), and the print state of the cream solder on the printed circuit board is inspected.

According to this embodiment, since the inspection data is created from the processing (manufacturing) data of the metal mask on which the cream solder is to be printed, the printing condition of the cream solder can be inspected with high accuracy, and the printing of the cream solder can be performed. The quality can be improved.

Further, according to this embodiment, since the inspection data is created from the processing (manufacturing) data of the metal mask on which the cream solder is printed, the inspection data can be created in a short time, and the know-how of the manufacturing at the mounting site can be obtained. Inspection that reflects

It is to be noted that the present invention is not limited to the above-described examples, and it goes without saying that various other configurations can be adopted without departing from the gist of the present invention.

[0027]

According to the present invention, since the processing (manufacturing) data of the metal mask is used to create the inspection data, the inspection data that can be inspected with high accuracy reflects the manufacturing know-how at the mounting site. There is a benefit that can be created in a short time.

[Brief description of the drawings]

FIG. 1 is a functional block diagram for explaining an example of an embodiment of an inspection data creation method of a cream solder print inspection apparatus according to the present invention.

FIG. 2 is a diagram for describing the present invention.

FIG. 3 is a diagram for explanation of the present invention.

[Explanation of symbols]

1} inspection data creation device, 2 metal mask processing data, 3 metal mask processing data input section, 4 metal mask opening shape generation section, 5 inspection section selection section,
6 ‥‥ Inspection data generation unit, 7 ‥‥ Inspection item and allowable value storage unit, 8 ‥‥ Cream solder print inspection data output unit, 9
‥‥ Cream solder printing inspection data

Claims (1)

[Claims] 1. An inspection data creating method for an cream solder printing inspection apparatus, wherein inspection data for inspecting a cream solder printing state is created from processing data of a metal mask used when printing cream solder.