JP2000208999A - Setting of backup pin in substrate backup device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize low price and easy setting of a backup pin in a backup device, where a base plate having a flat upper surface and a plurality of backup pins erected at the desired position of the upper surface of this base plate are provided, and the backup pin is fixed on the base plate with magnetic force. SOLUTION: A transparent sheet 3 is prepared, a sheet 3 is laminated, with reference to the positioning reference, on the backup surface of a substrate 4, visible marks M1 to M5 to identify the backup region are provided on the surface opposed to the surface facing the substrate 4 in the sheet 3, the sheet (5) is separated from the substrate (4) and the surface, on which the marks M1 to M5 are provided, is placed on the predetermined position of the upper surface 1a with such surface directed to the upper surface 1a of the base plate 1, and the backup pin 2 is erected on the base plate 1 from the upper part of the sheet 3, so that such backup pin is located within the backup region by visually observing the marks M1 to M5 via the sheet 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for setting backup pins in a substrate backup device used for a screen printer for printing cream solder on a substrate or a mounting machine for mounting electronic components on the substrate. More specifically, a base having a flat upper surface and a plurality of backup pins erected at any position on the upper surface of the base are provided, and the backup pins are fixed to the base by magnetic force. And a method for setting backup pins in a substrate backup device.

[0002]

2. Description of the Related Art As is well known, in a board on which components are mounted on both sides, when the components are mounted on one side and cream solder is printed or the components are mounted on the other side, one of the components is mounted. It is necessary to back up the surface at a place where no parts are present, and for that purpose, the above-mentioned substrate backup device is used. Conventionally, in order to set the backup pin on the base in the above-mentioned board backup device, first, a part on the surface to be backed up of the board where no parts exist (hereinafter referred to as a backup available area) is confirmed. ,
A method has been adopted in which a position on the upper surface of the base that the backup available area corresponds to is determined using a scale or the like, and a backup pin is erected at that position.

[0003]

In the above-mentioned conventional method of setting backup pins, there is a problem that it is very troublesome and complicated to find a portion corresponding to a backup available area on the upper surface of the base. .

A method has also been proposed in which a template provided with a through hole at a location corresponding to a backup available area is placed on the upper surface of a base and backup pins are positioned on the base. However, there is a problem that the production is troublesome and the material is expensive, so that the cost is high.

[0005] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to make it possible to set backup pins easily and inexpensively in the above-mentioned substrate backup device.

[0006]

In order to achieve the above object, according to the present invention, there is provided a base having a flat upper surface, and a plurality of bases standing at arbitrary positions on the upper surface of the base. A backup pin setting method in a substrate backup device comprising a backup pin, wherein the backup pin is fixed to the base by a magnetic force,
Prepare a see-through sheet formed so as to be able to cover the area including the back-up possible area and the surrounding area on the back-up side surface of the substrate, and position the sheet based on a preset positioning reference. Superimposed on the surface of the substrate to be backed up,
A visible mark for identifying the backup-capable area is provided on a surface of the sheet opposite to the surface facing the substrate, and the sheet is separated from the substrate and the surface provided with the mark is attached to the base. The base is placed from above the sheet so that the backup pin is positioned within the backup available area by placing the backup pin at a predetermined position on the upper surface of the upper surface and visually recognizing the mark through the sheet. It is characterized by being erected on the top.

According to a second aspect of the present invention, in the method of the first aspect, the sheet is provided with a positioning portion for engaging the proper position of the base and positioning the sheet with respect to the base. It is characterized by the following.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a base 1 of a substrate backup device used in the present embodiment.
Is a perspective view of a backup pin 2 set on the base 1;
3 is a perspective view of the sheet 3 for positioning the backup pins 2 on the base 1, FIG. 4 is a perspective view of the substrate 4 to be backed up from the back side, and FIGS. It is explanatory drawing of a method.

The substrate backup device used in the present embodiment is mounted on a screen printing machine that prints cream solder on the surface of the substrate 4 and backs up the surface opposite to the surface on which the substrate 4 is printed during printing. A base having a flat upper surface 1a (see FIG. 1) and a plurality of backup pins 2, 2,... (Only books shown).

The base 1 is made of a magnetic material and, as shown in FIG. 1, has a large number of backup pin insertion holes 1b, 1b,. The insertion holes 1b, 1b, ... are arranged in a matrix.

The backup pin 2 is made of a magnetic material, and has a reduced-diameter portion 2a formed at one end so as to be slidably fitted in the backup pin insertion hole 1b of the base 1, and at the other end. The magnet 2b is provided inside.

The backup pin 2 is formed by fitting the reduced diameter portion 2a into the backup pin insertion hole 1b.
Although it is erected above, it can also be erected at any position on the upper surface 1a of the base 1 with the side where the magnet 2b is installed facing downward. In this case, the backup pin 2 is fixed on the base 1 by the magnetic force of the magnet 2b.

The substrate 4 is moved by a conveyor (not shown).
The substrate is conveyed to a predetermined position above the substrate backup device with the side to be backed up facing down, and the backup pins 2, 2,...
・ It is pressed against and fixed. Then, after printing,
It is conveyed to the next process by a conveyor (not shown).

When the backup pin 2 is erected on the base 1 with the magnet 2b side down, the positioning is performed using a plastic sheet 3 shown in FIG. This sheet 3
Is formed so as to cover the entire surface of the substrate 4 with an inexpensive material such as PVC, and positioning indicators 3a and 3b are provided on the upper surface. These indicators 3
a and 3b are designated by indices 4a and 4b (see FIG. 4) attached to the backed-up surface of the substrate 4 arranged on the lower surface side of the sheet 3.
2), the sheet 3 can be positioned at a predetermined position with respect to the substrate 4.

A pair of positioning pins 3c and 3d are mounted on the upper surface of the sheet 3 at an interval. The positioning pins 3c and 3d are connected to the backup pin insertion holes 1b.
Are formed so as to be slidably fitted to each other.
It is an integral multiple of the interval Y of 1b (see FIG. 1). The positions of the positioning pins 3c and 3d are determined when they are fitted into predetermined backup pin insertion holes 1b and 1b, respectively.
The seat 3 is set so as to be positioned at a predetermined position on the upper surface 1a of the base 1.

This position is such that when the backupable areas A1 to A5 of the substrate 4 positioned above the base 1 are projected onto the sheet 3, the projected backupable areas A1 to A5 are respectively interposed via the sheet 3. It is set so as to match marks M1 to M5 (to be described later) which are seen through.

Next, a method of setting a backup pin according to the present invention will be described with reference to FIGS.

First, as shown in FIG. 5, the sheet 3 is overlaid on the surface of the substrate 4 to be backed up on the side to be backed up based on the indices 3a, 3b; 4a, 4b.

Next, on the upper surface of the sheet 3, a back-up area A 1-1 of the substrate 4 is coated with a colored oil-based ink.
Apply annular marks M1 to M5 along the periphery of A5,
The sheet 3 is separated from the substrate 4 (see FIG. 6).

Then, the sheet 3 is positioned with the marks M1 to M5 facing the upper surface 1a of the base 1, and the positioning pins 3c and 3d are respectively inserted into predetermined backup pin insertion holes 1a.
b, 1b, and the sheet 3 is placed on the upper surface 1a of the base 1 (see FIG. 7).

Then, the backup pins 2, 2,...
Is erected on the base 1 from above the sheet 3 so that the side where the magnet 2b is installed faces downward and is positioned within the marks M1 to M5 seen through the sheet 3 (FIG. 8). reference).

The tips of the backup pins 2, 2,..., Which are erected in this way, respectively contact the backup possible areas A1 to A5 of the substrate 4 positioned above to back up the substrate 4.

As described above, according to the present invention, the location corresponding to the backupable area on the upper surface of the base can be determined very easily and accurately without using a scale or the like. Become.

Further, since the sheet can be manufactured very easily and can be made of an inexpensive material such as an OHP (Over Head Projector) sheet, the cost can be greatly reduced as compared with the case where a template is used. Become.

It should be noted that the present invention is not limited to the above embodiment, and various changes can be made.

For example, in the above embodiment, the case where the present invention is applied to a substrate backup device used in a screen printer for printing cream solder on a substrate has been described. The present invention can also be applied to a substrate backup device used in a mounting machine for mounting electronic components on a substrate.

The material of the sheet may be other than plastic (eg, thin paper), and the sheet may be translucent as long as the mark can be seen through. Further, the sheet may be positioned on the base by a method other than the positioning pin.

Further, in the above embodiment, the sheet is formed so as to cover the entire surface of the substrate to be backed up. However, it is possible to cover at least the backup available area and its peripheral parts. It is sufficient if it is formed in

Other than the above, various modifications can be made without departing from the gist of the present invention.

[0030]

As described above, according to the present invention,
A board backup device comprising a base having a flat upper surface, and a plurality of backup pins erected at an arbitrary position on the upper surface of the base, wherein the backup pins are fixed to the base by magnetic force. The backup pin can be easily and inexpensively set on the base.

According to the second aspect, the sheet can be easily positioned with respect to the base by engaging the positioning portion provided on the sheet with an appropriate position on the base, so that the workability is improved. .

[Brief description of the drawings]

FIG. 1 is a perspective view of a base 1. FIG.

FIG. 2 is a perspective view of a backup pin 2.

FIG. 3 is a perspective view of a seat 3.

FIG. 4 is a perspective view of the substrate 4 as viewed from the back side.

FIG. 5 is an explanatory diagram of a setting method of a backup pin 2.

FIG. 6 is an explanatory diagram of a method of setting a backup pin 2.

FIG. 7 is an explanatory diagram of a setting method of a backup pin 2.

FIG. 8 is an explanatory diagram of a setting method of a backup pin 2.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Backup pin 3 Sheet 3a, 3b Index (positioning reference) 3c, 3d Positioning pin (positioning part) 4 Board 4a, 4b Index (positioning reference) A1-A5 Backup available area M1-M5 Mark

Claims (2)

[Claims] 1. A base having a flat upper surface, and a plurality of backup pins erected at an arbitrary position on the upper surface of the base, wherein the backup pins are fixed to the base by magnetic force. A method of setting backup pins in a substrate backup device, comprising: a transparent sheet formed so as to cover an area including a backup available area on a surface to be backed up of a substrate and a peripheral part thereof. Prepare, the sheet is superimposed on the surface of the substrate to be backed up based on a preset positioning reference,
A visible mark for identifying the backup-capable area is provided on a surface of the sheet opposite to the surface facing the substrate, and the sheet is separated from the substrate and the surface provided with the mark is attached to the base. The base is placed from above the sheet so that the backup pin is positioned within the backup available area by placing the backup pin at a predetermined position on the upper surface of the upper surface and visually recognizing the mark through the sheet. A method of setting a backup pin in a board backup device, wherein the backup pin is set up on the board. 2. The method according to claim 1, wherein the sheet is provided with a positioning portion that is engaged with a proper position of the base to position the sheet with respect to the base.