JP2657323B2 - Printed circuit board assembly drawing making equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board assembly diagram creating apparatus for creating an assembly diagram of a printed circuit board necessary for mounting various components on the printed circuit board.

(Prior art)

FIG. 2 is a diagram showing an example of the configuration of a conventional printed circuit board assembly drawing creating apparatus of this type. The operator specifies the name of the component from the keyboard 1 and inputs the coordinates of the component on the printed circuit board using the coordinate input device 2 such as a mouse or a digitizer. The state of the mounted components is CRT display 3
The operator repeats this work while checking all the images displayed on the CRT display device 3 until all necessary parts are mounted. When the mounting of all components is completed, the components are combined with the previously input outline of the printed circuit board, and the combined result is output to the plotter 4 at the same time.

FIG. 3 is a diagram showing an output example of an actual printed circuit board assembly drawing outputted from the plotter 4. As shown
Resistor frame 102 with 7 pieces arranged horizontally at a predetermined position in printed circuit board outer shape 101, IC component frame with 4 pieces arranged horizontally and its component name (26LS31) 103, IC component frame with 6 pieces arranged horizontally and its components Name (74ALS109) 104, Single component frame 105 such as 5 capacitors arranged vertically 3 pieces horizontally, IC arranged 3 pieces vertically and 2 pieces horizontally
Part frame and its part name (26LS32) 106, I vertically arranged two
C part frame and its part name (ALS20) 107, I vertically arranged two
The C part frame and its part name (ALS32) 108 are output from the plotter 4. FIG. 4 is an example of a functional block diagram of the printed circuit board assembly drawing creating apparatus. Hereinafter, what processing is internally performed based on an instruction of the worker will be described.
First, when a component name is designated from the keyboard 1, the input / output control unit 10 transfers this to the command control unit 11. The command control unit 11 takes in data of a corresponding component from among the data registered in advance in the component outline data storage unit 12 into a temporary storage unit (not shown). This data is drawing data constituting the external shape of the part, and as shown in FIG. 6A, the starting point, the ending point, the coordinates, the center point, the radius, the starting point angle, and the ending point of the line segment L for each part. The corners and the like are displayed. Next, according to the coordinates designated by the coordinate input device 2, the data fetched into the temporary storage unit is stored in the assembly drawing data storage unit 13 in the sixth place.
As shown in FIG. 8B, the information is stored in parts. The display on the CRT display device 3 and the output to the plotter 4 are converted into image data by the input / output control unit 10 based on the data stored in the assembly drawing data storage unit 13 and output.

If a component is mistakenly mounted due to an operator's mistake, the operator inputs a delete command from the keyboard 1 and designates the corresponding component with the coordinate input device 2 such as a mouse to delete the component. It is possible to In the case of this deletion, the data of the part stored in the assembly drawing data storage unit 13 is deleted.

The printed circuit board assembly drawing created in this manner is output from the plotter 4 as a drawing as shown in FIG.
It is used for visual inspection of printed circuit board assemblies.

[Problems to be solved by the invention]

However, the above-described printed circuit board assembly drawing creating apparatus has a problem that it is not easy to create a printed circuit board assembly drawing for a plurality of models from one type of bare board (a printed circuit board in which nothing is mounted). In other words, in actual board production, in order to reduce the cost of designing and using printed circuit boards and reducing the production cost of bare boards, by mounting or not mounting specific optional parts on the same bare board, destinations and functions differing Printed circuit boards may be assembled. In this case, there are places on the completed printed circuit board where no components are mounted.

In the conventional printed circuit board assembly drawing creating apparatus, a picture of the component outline is drawn at a place where the component is mounted, but nothing is drawn at a place where the component is not mounted as shown at 109 and 110 in FIG. Therefore, when components are not mounted on the assembled printed circuit board, there is a problem that whether the component is correct or not mounted due to a manufacturing error cannot be easily determined only by looking at the assembly drawing.

Therefore, as a countermeasure, when there is an unmounted component after the assembly drawing is completed, a means such as writing a note that the component is not mounted in a margin of the assembly drawing is adopted. However, in this method, there is a problem that it takes time to write a note, and there is a problem that since the note has to be read, it is not immediately known whether or not it is installed.

The present invention has been made in view of the above points, and in the case of creating a plurality of types of printed circuit boards by changing the number of mounted components from the one type of bare board, to facilitate the work of creating each assembly drawing It is an object of the present invention to provide a printed circuit board assembly diagram creating apparatus that allows an operator to easily indicate that components are not mounted at the time of creating an assembly diagram, and that can instantaneously determine unmounted components in a created assembly diagram.

[Means for solving the problem]

In order to solve the above problems, the present invention provides a printed circuit board assembly drawing creating apparatus as follows.

A component hole / pad shape data storage unit for storing component hole / pad shape data is provided for each component in addition to the component external shape data storage unit provided in the conventional printed circuit board assembly drawing creating apparatus. In response to the mounting instruction, the part outline data of the part is deleted from the assembly drawing data storage unit, and the component hole and pad shape data of the part are stored in the assembly drawing data storage unit instead. Output with a plotter.

[Action]

According to the present invention, as described above, in response to an instruction by a worker to mount a part, the part outline data of the part is deleted from the assembly drawing data storage unit, and the shape data of the part hole and pad of the part is replaced by the assembly drawing. Since the result is stored in the data storage unit and the result can be output by a plotter or the like, it is possible to easily perform drawing of an assembly drawing when a plurality of types of assembly instructions are given on one bare board depending on, for example, the presence or absence of an option. By looking at the assembly drawing output as in the above, it can be recognized at a glance whether the device is mounted or not.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a functional block diagram of a printed circuit board assembly drawing creating apparatus according to the present invention. In the figure, the parts denoted by the same reference numerals as those in FIG. 4 indicate the same parts.

4 differs from the apparatus of FIG. 4 in that holes and pads of parts necessary for mounting the part on the printed circuit board in correspondence with each part in addition to the part outline data storage unit 12. That is, a hole for a component for storing data and a pad information storage unit 14 are provided.

The operation of creating the assembly drawing in the printed circuit board assembly drawing creating apparatus is the same as the operation of the above-described conventional apparatus. That is, when a component name is designated from the keyboard 1, the input / output control unit 10 transfers this to the command control unit 11, and the command control unit 11 selects a corresponding one of the data registered in the component outline data storage unit 12 in advance. The data of the component to be loaded is fetched into the temporary storage unit, and subsequently, according to the coordinates specified by the coordinate input device 2,
The data taken into the temporary storage unit is stored in the assembly drawing data storage unit 13 in units of parts, and the display on the CRT display device 3 and the output to the plotter 4 are based on the data stored in the assembly drawing data storage unit 13. The image data is converted into image data by the input / output control unit 10 and output.

Next, a description will be given of a component non-load instruction which is a feature of the present invention. The operator creates an assembly drawing in which all the components are mounted in the apparatus by the above operation. Next, an unmounted command is input by the keyboard 1 or the like, and a component to be unmounted is input by the coordinate input device 2 such as a mouse. Thus, when the operator designates the unmounted command and the coordinates of the part, the data of the corresponding part is deleted from the assembly drawing data storage unit 13 as in the conventional case. FIG. 7 shows this state. (A) is a diagram showing the storage contents of the assembly drawing data storage unit 13 in which all parts are completely mounted. FIG. (B) is a diagram in which the parts IC2,..., IC2 of (a) are deleted. Indicates the stored contents.

Further, in this apparatus, the coordinates of the part so far are added to the part IC2, the part hole and the pad information stored in the pad information storage unit 14 as shown in FIG.
‥‥ Retrieve the information corresponding to IC2 and store it additionally. This deletion and addition are performed at once. FIG. 5 shows an example of the output from the plotter 4 of the assembly drawing obtained by this operation.

That is, as shown in FIG. 5 (a), when a component at a position indicated by a dotted line is not mounted from an assembly drawing in which all the components are mounted, an unmounted command is input by the keyboard 1 or the like, and a dotted line is used. The enclosed part is input by the coordinate input device 2 such as a mouse. As a result, a hole 120 and a pad 121 of the component are drawn at the location of the unmounted component surrounded by the dotted line. This is very close to the printed assembly when the components are actually mounted on the printed circuit board and assembled, so that erroneous judgments are not made in the appearance inspection and the like after the board is assembled.

〔The invention's effect〕

As described above, according to the present invention, the following excellent effects can be obtained.

(1) In response to a worker's non-mounting instruction, the part outline data of the part is deleted from the assembly drawing data storage unit, and the component hole and pad shape data of the part are stored in the assembly drawing data storage unit instead. Therefore, it is possible to extremely easily create an assembly drawing in a case where a plurality of types of assembly instructions are given in one bare bay, which is impossible with a conventional printed board assembly drawing creating apparatus.

(2) Conventionally, an unmounted component is designated by a method such as writing an instruction to mount / not mount an unmounted component in a blank space of an assembly drawing by a character or the like. At a glance, it is possible to recognize whether or not the assembly drawing is mounted.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of a printed circuit board assembly drawing creating apparatus according to the present invention, FIG. 2 is a diagram showing an example of a configuration of a conventional printed circuit board drawing creating apparatus of this type, and FIG. FIG. 4 is a functional block diagram of a conventional printed circuit board assembly drawing creating apparatus, and FIGS. 5 (a) and (b) are diagrams showing a printed circuit board assembly drawing creating apparatus of the present invention. FIGS. 6 (a) and 6 (b) are views showing the contents stored in a component outline data storage unit and an assembly drawing data storage unit, respectively. FIGS. 8A and 8B show the contents stored in the assembly drawing data storage unit, and FIGS. 8A and 8B show the contents stored in the component hole pad information storage unit and the assembly drawing data storage unit, respectively. FIG. In the figure, 1 ... keyboard, 2 ... coordinate input device, 3 ...
CRT display device, 4 ... plotter, 11 ... command control unit, 12 ... part outline data storage unit, 13 ... assembly drawing data storage unit.

Claims (1)

(57) [Claims] 1. An input device, comprising: a component external data storage unit for storing external data of a component; extracting external data of a corresponding component from the external data of the component based on a mounting component name input from an input device. The part data is stored in the assembly drawing data storage unit in accordance with the coordinate designation of the mounting position of the printed circuit board, and all the mounted parts are stored in the assembly drawing data storage unit. In a printed circuit board assembly drawing creating apparatus for creating a printed circuit board assembly drawing by creating board assembly drawing data, a component hole, a component hole,
A component hole / pad shape data storage unit for storing pad shape data is provided, and in response to an operator's non-mounting instruction, the component outline data of the component is deleted from the assembly drawing data storage unit. A printed circuit board assembly drawing creating apparatus, wherein the shape data of the component holes and pads is stored in the assembly drawing data storage unit.