JPS6253765A - Emitting nozzle - Google Patents

Abstract

PURPOSE:To stabilize a drawing width and a drawing position, by providing a stylus to one end of a viscous material emitting port in the same width as that of the emitting port. CONSTITUTION:Both of the viscous material emitting port 1 and stylus 2 of the leading end part of a nozzle have the same width (a) and the stylus 2 is contacted with one end of the viscous material emitting port 1 and engaged with an emitting nozzle main body 3 so as not to obstruct the emission of a viscous material. In thick film printing, while the nozzle main body 3 and a thick film substrate are held to a constant interval (b) by the stylus 2, the nozzle main body 3 is moved to the direction shown by an arrow and the viscous material is emitted from the viscous material emitting port 1. At this time, the viscous material is always contacted with the stylus 2 from the point of time when said viscous material is issued from the emitting port to the point of time of the printing on the thick film substrate and, because the adhesive strength thereof is constant according to the kind and temp. of the viscous material, the viscous material is applied to the substrate in such a state that the width or position of the viscous material adhered to the stylus 2 is stable.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a nozzle for discharging a viscous material for forming a thick film. Prior Art FIG. 4 is an enlarged view of the tip of a conventional discharging nozzle. In a conventional discharge nozzle, as shown in Fig. 4, the viscous material discharge lower and the stylus 6 are arranged separately, and the width of the viscous material at the time it is applied to the thick film substrate, that is, the drawing width, is mainly the viscous material. The viscous body is controlled by the width d of the body discharge lower, and the drawing position is also controlled based on the assumption that the viscous body is constantly discharged from the viscous body discharge lower and applied to the thick film substrate.

Problems to be Solved by the Invention However, with the above configuration, the drawing width and the drawing position can only be controlled at the time when the viscous material is discharged from the viscous material discharging lower. The width of the viscous body tends to change during application, and since the viscous body coasts, there are inevitably large variations in drawing width and drawing position.

In view of the above problems, the present invention aims to stabilize the drawing width and drawing position by controlling the width and position of the viscous material until the viscous material is applied to the thick film substrate.

Means for Solving the Problems The present invention solves the above problems by providing a discharge nozzle in which a stylus is disposed at one end of the viscous material discharge port, and the width of the stylus is made the same as the width of the viscous material discharge port. It is.

Function: With the above configuration, the viscous body remains in contact with the stylus even after being discharged from the viscous body discharge port. When the viscous body comes into contact with the stylus, adhesive force is generated between the viscous body and the stylus. Since the adhesive force is constant depending on the type of viscous material, temperature, etc., the width and position of the viscous material attached to the stylus are stable when applied to the thick film substrate. Therefore, the drawing width and drawing position can be stabilized.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIG. FIG. 1 is a perspective view of the tip of the discharge nozzle of the present invention, FIG. 2 is a sectional view of the discharge nozzle of FIG. 1, and FIG. 3 is an explanatory diagram of thick film printing using the discharge nozzle of the present invention. .

1 is a viscous material discharge port, 2 is a stylus, and both have the same width a. The stylus 2 is in contact with one end of the viscous material discharge port 1 and is fitted into the discharge nozzle body 3 so as not to interfere with the discharge of the viscous material 4. The nozzle body 3 and the thick film substrate 5 are kept at a constant distance by a stylus 2.

Here, when thick film printing is performed, the viscous material 4 is discharged from the viscous material discharge port 1 while the nozzle main body 3 moves relative to the thick film substrate 5 in the direction of the arrow in FIG. 3 in FIG. At this time, the viscous material 4 is always in contact with the stylus 2 from the time it exits from the viscous material discharge port 1 until it is printed on the thick film substrate 6. Therefore, the viscous body 4 generates adhesive force against the stylus 2.

Since the adhesive force is constant depending on the type of viscous body 4, temperature, etc., the width C of the viscous body while the viscous body 4 is in contact with the stylus 2 is constant and distributed to the center of the stylus 2. be in a state of being

As described above, according to this embodiment, the width and position of the viscous material can be stabilized by providing a slit-shaped protrusion with the same width as the discharge port at one end of the viscous material discharge port at the tip of the nozzle. Therefore, it is possible to reduce variations in drawing width and drawing position. Effects of the Invention As described above, the present invention provides a viscous material outlet at one end of the nozzle tip with a width equal to that of the outlet. By providing the slit-shaped protrusions, the drawing width and drawing position can be stabilized, and thick film circuits can be formed with high precision and high density.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the tip of the discharge nozzle of the present invention, FIG. 2 is a sectional view of the discharge nozzle of FIG. 1, and FIG. 3 is a perspective view illustrating thick film printing using the discharge nozzle of the present invention. FIG. 4 is a perspective view of the tip of a conventional discharge nozzle. 1... Viscous material discharge port, 2... Stylus. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
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Claims (1)

[Claims] A discharge nozzle characterized in that a stylus having the same width as the discharge port is provided at one end of the viscous material discharge port at the tip of the nozzle.