JPS58310Y2 - Alignment mechanism in screen printing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of an alignment mechanism in a screen printing apparatus that patterns a required wiring circuit on a printed board (hereinafter referred to as a board) using a conductive paste.

In screen printing, alignment of the screen and substrate is very important, and if printing is performed without alignment, the product will be defective.

The general method for aligning the screen and the board is to project light from below the board, align the mark on the screen with the reference mark on the board, and then align the entire board.

Conventionally, as shown in FIG. 2, this type of positioning jig has been made of a material that can transmit light, and includes a block 21 that positions and fixes the substrate 1, and a block 21 that is located below the substrate 1 and that is horizontally incident. A reflector 22 that reflects light in a vertical direction, and a base 2 on which the block 21 and the reflector 22 are installed.
3, and a light source 24 that irradiates horizontal light 25 to the reflecting mirror 22.
It was composed of.

According to this method, since the entire surface of the substrate 1 is irradiated with light, it is difficult to distinguish the reference mark 20 on the substrate 10, and it is difficult to align the reference mark 2 on the substrate 10 and the mark 6 on the screen 5, resulting in poor workability.

The present invention eliminates these drawbacks and provides a positioning mechanism for a screen printing apparatus using a transmitted light method that allows easy positioning and good workability.

According to the present invention, the block 11 is made of a light-transmissive material and positions and fixes the substrate 1, the reflector 12 is located below the substrate 1 and reflects horizontally incident light in the vertical direction, and the substrate 10 a plurality of concave reflecting mirrors 15 located below the reference mark 2 and reflecting and focusing horizontally incident light in the vertical direction; and a block 11. A base 16 on which a reflector 12 and a concave reflector 15 are installed, and a reflector 12
, an alignment mechanism in a screen printing apparatus is obtained, which is constituted by the light source 13 that irradiates the concave reflecting mirror 15 with the horizontal light 14.

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

Figure 1 is a perspective view of a product in which a wiring circuit is created using conductive paste on a board, in which 1 is a board with reference marks 2;
3 is a wiring circuit formed on the substrate 1 using conductive paste.

FIG. 3 is a perspective view showing an embodiment of the present invention. Reference numeral 11 denotes a block that positions and fixes the substrate 1 so that the reference mark 2 of the substrate 10 corresponds to the mark 6 of the screen 5, and is capable of transmitting light. It is made of material.

A reflecting mirror 12 is located below the substrate 1 and reflects the horizontal light 14 emitted from the light source 13 in the vertical direction to illuminate the substrate 1.

A concave reflecting mirror 15 is located below the substrate 10 and corresponds to the reference mark 2, and reflects horizontal light 14 emitted from the light source 13 in the vertical direction and condenses the light to illuminate the reference mark 2.

16 is the base and block 11. A reflecting mirror 12 and a concave reflecting mirror 15 are installed at the top.

FIG. 4 is a cross-sectional view of FIG. 3, in which the substrate 1, which is positioned and fixed by flocks 11, is entirely illuminated by a reflector 12, and a concave reflector 15 partially illuminates the reference square 2. has been done.

As explained above, the present invention has the advantage that alignment is easy, workability is good, and products with high printing accuracy can be produced.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the product, Figure 2 is a perspective view of a conventional mechanism, Figure 3 is a perspective view of an embodiment of the mechanism of the present invention, and Figure 4 is a sectional view of Figure 3. 1 is a substrate, 2 is a reference mark, 111 is a block, 12 is a reflecting mirror, 13 is a light source, 14 is a horizontal light, 15 is a concave reflecting mirror, and 16 is a base.

Claims (1)

[Scope of utility model registration request] A block 11 made of a material that can transmit light and which positions and fixes the substrate 1, a reflector 12 located below the substrate 1 that reflects horizontally incident light in the vertical direction, and a reference mark 2 on the substrate 10. A plurality of concave reflectors 15 located below reflect and condense horizontally incident light in the vertical direction, and a base 16 on which the block 11° reflector 12 and concave reflector 15 are installed. , a light source 13 that irradiates horizontal light 14 onto a reflecting mirror 12 and a concave reflecting mirror 15.