JP3166923B2 - Manufacturing method of ceramic laminated electronic component - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a ceramic multilayer electronic component, and more particularly to a method for manufacturing a ceramic multilayer electronic component having three or more types of internal print patterns to be formed on ceramic sheets to be stacked. It is about.

[0002]

2. Description of the Related Art As multilayer ceramic electronic components, there are, for example, multilayer ceramic capacitors, multilayer LC filters, multilayer delay lines, and the like. Such ceramic multilayer electronic components are formed on ceramic sheets to be laminated. Some internal print patterns require a plurality of types.

As described above, when manufacturing a ceramic laminated electronic component requiring two or more types of internal print patterns, conventionally, either of the following first or second methods has been adopted.

In the first method, a plurality of types of ceramic green sheets on which only one type of print pattern is formed are prepared according to the type of internal print pattern. Next, these ceramic green sheets are punched to a size to be stacked, and the punched sheets are stacked in a predetermined order.

In the second method, a plurality of types of ceramic green sheets in which one type of printing pattern is continuously arranged are prepared in accordance with the type of internal printing pattern, and these green sheets are wound on reels, respectively, and are dedicated. House in a box. Then, if necessary, a box containing a desired type of printed green sheet is set in a predetermined facility, and according to a desired stacking order, the corresponding ceramic green sheet is punched into a predetermined size. Stack up.

[0006]

However, the above-mentioned first method usually relies on manual work, so that not only the efficiency is low but also the stacking order is incorrect and the stacking accuracy varies. It may grow larger. In addition, since the necessary types of printing are performed one by one, only the number of types that need to be changed in printing is required, which is also inefficient.

On the other hand, the second method has flexibility, but prerequisite is that a necessary type of printed ceramic green sheet must be prepared in advance, for example, in reel units. In addition, since printing and stacking in this method are not synchronous processes, the process flow is hindered from printing to stacking, and a place for storing printed ceramic green sheets is required. There is.

Therefore, an object of the present invention is to provide a manufacturing method capable of solving the above-described problems in manufacturing a ceramic laminated electronic component having a plurality of types of internal printed patterns.

[0009]

In order to solve the above-mentioned technical problems, a method for manufacturing a ceramic laminated electronic component according to the present invention is arranged on a single long ceramic green sheet in a predetermined arrangement order. At least three types
A plurality of groups of internal print patterns are repeatedly formed,
From the elongated ceramic green sheet, punching the sheet portion comprising a respective set of internal print pattern in a predetermined order, then, each sheet portion stamped, stamped
It is characterized by comprising each step of stacking while maintaining the state .

[0010]

SUMMARY OF] According to the present invention, to be stacked in order to obtain the desired ceramic multilayer electronic component, three kinds of sheets even without low, can be handled as a group, yet long
Because multiple groups are formed on the long ceramic sheet, continuous
In addition, it is possible to synchronize the printing and stacking steps in the ceramic laminated electronic component having three or more types of internal printing patterns.

[0011]

According to the, according to the present invention according leverage of the invention, stacked
Even if there are three or more types of ceramic sheets to be
They can be handled as one group and continuously in multiple groups.
Since, it is not necessary to carry out one by one to the different sheet types of printing required, prevents that the setup change of printing required for the number of types necessary, from print until the stack or, they Can be carried out efficiently by a single facility or a combination of single facilities. In result, complex multilayer electronic components, such as base can Internal print pattern is formed on the ceramic sheet portion is 3 or more
In addition, it is possible to manufacture efficiently, and it is particularly advantageous when ceramic multilayer electronic components to be manufactured are diversified.

In addition, since punching and stacking can be performed subsequent to the printing process, the process flow does not become complicated, and stacking can be performed accurately and without errors.

[0013] Accordingly, the present invention has been developed when ceramic multilayer electronic components to be manufactured are diversified.
It is particularly advantageous.

[0014]

FIG. 1 is a plan view showing a ceramic green sheet 1 used in a method of manufacturing a ceramic laminated electronic component according to an embodiment of the present invention.

On one ceramic green sheet 1, a plurality of types, that is, four types of internal printing patterns 2a, 2b, 2c and 2d in the illustrated embodiment are formed as a group in a predetermined arrangement order. In the drawing,
The type of the internal print pattern is distinguished by each of the symbols “A”, “B”, “C”, and “D”. Further, the ceramic green sheet 1 may be lined with a carrier film made of a suitable material.

The above-described internal printing patterns 2a, 2b, 2
In order to print a plurality of groups c and 2d sequentially and continuously, for example, a screen 3 as shown in FIG. 2 is used. That is, the screen 3 has the internal print patterns 2a,
2b, a 2c, respectively corresponding pattern 2d group
To provided all in this order. In addition, without using such a screen 3, the internal printing pattern 2
a, 2b, 2c, and 2d, the internal print patterns 2a, 2b, 2c, and 2d are divided into a plurality of stages using a screen having a pattern corresponding to each one or a part thereof.
A group of printings may be performed.

The ceramic green sheet 1 is then
The sheet portion including each of the internal print patterns 2a, 2b, 2c and 2d is punched out in a predetermined order.
The stamped sheet portions are then stacked at a stacking station.

The above-described punching is performed by, for example, a movable punching head. The punching head moves along the direction in which the ceramic green sheet 1 extends,
The position of the sheet portion including any desired one of the internal print patterns 2a to 2d is detected, and punching is achieved at that position. The internal print pattern 2 by the punching head
A sensing mark may be provided in the vicinity of each of the internal print patterns 2a to 2d in order to facilitate the detection of the position of the sheet portion including each of the print patterns a to 2d. Sheet portions punched by the punching head are held by the punching head, and the punching head moves to the stacking station and is stacked at the stacking station while maintaining the punched state .

The above-described punching order is, for example, the internal printing patterns 2a, 2c, 2d, 2b, 2 according to the stacking order predetermined by the product specification to be obtained.
a, 2c, 2d, 2b,... are preferably programmed.

In order to perform punching in a predetermined order, the ceramic green sheet 1 may be moved instead of moving the punching head.

FIG. 3 is a plan view showing a ceramic green sheet 1a used in another embodiment of the present invention.

The ceramic green sheet 1 shown in FIG.
a, a group of internal printing patterns 2a, 2b, 2c, 2
d are arranged in 2 rows and 2 columns, and this is continuous in the longitudinal direction of a plurality of groups.
It is formed. The ceramic green sheets 1a shown in FIG. 3 specifically show that the internal printing patterns are not limited to being arranged in one column as shown in FIG. 1, but may be arranged in multiple rows and multiple columns. I have. The number of rows and columns of the internal print pattern formed on one ceramic green sheet is determined by the size of the ceramic green sheet, the required number of internal print patterns, the punching dimensions, and the capabilities of the printing and punching device. it is the this <br/> be determined by such.

FIG. 4 shows a screen 3a used for printing an internal print pattern on a ceramic green sheet in still another embodiment of the present invention.

On the screen 3a, patterns 4a, 4 corresponding to each of the internal print patterns 2a, 2b, 2c are provided.
In addition to b and 4c, a blank area 5 where no internal print pattern is printed is formed. When this screen 3a is used, for example, in FIG.
Is an area where no internal print pattern is formed. Therefore, by punching out this area, it is possible to take out the sheet portion where the internal print pattern is not formed,
This method may be used when the sheet portion to be stacked includes a sheet portion on which the internal print pattern is not formed.

[Brief description of the drawings]

FIG. 1 is a plan view showing a ceramic green sheet 1 used in one embodiment of the present invention.

FIG. 2 is an internal print pattern 2a, 2b, 2 shown in FIG.
It is a perspective view showing screen 3 used for printing c and 2d.

FIG. 3 is a plan view showing a ceramic green sheet 1a used in another embodiment of the present invention.

FIG. 4 is a perspective view showing a screen 3a used for printing an internal print pattern on a ceramic green sheet in still another embodiment of the present invention.

[Explanation of symbols]

 1,1a Ceramic green sheet 2a, 2b, 2c, 2d Internal printing pattern

Claims (1)

(57) [Claims] 1. At least three types arranged in a predetermined arrangement order on one long ceramic green sheet.
The internal printing pattern that is a group with a plurality of groups repeatedly formed from the elongated ceramic green sheets, the group
Punched sheet portion including each of the internal print pattern in a predetermined order, then, each sheet portion stamped, punched
A method for manufacturing a ceramic laminated electronic component, comprising: stacking while maintaining a separated state .