JP3517752B2 - Device for attaching electrodes to electronic component bodies - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode attachment device for an electronic component body.

[0002]

2. Description of the Related Art Generally, a conductive electrode paste is applied to the surface of an element body of an electronic component such as a resistor, a capacitor or a coil (hereinafter referred to as an electronic component element body) to form an electrode. The electrode paste mainly contains, for example, metal powder, an organic binder, an organic solvent, and the like.

Conventionally, as shown in FIG. 8, an upper surface S1 and a side surface S2 of a three-dimensional electronic component body S having a plurality of planes.
As shown in FIG. 9, when forming a continuous streak-shaped electrode P over at least two adjacent surfaces (three surfaces of the upper surface and both side surfaces in this example), a groove formed in the rubber roller R as shown in FIG. The electrode paste P ′ was filled in D and rolled while being pressed against the surface of the electronic component body S to transfer the electrode paste P ′.

[0004]

However, in the conventional technique for forming the electrode P by the rubber roller R, the rubber roller R is deformed, so that the electronic component body S having a large unevenness has an accurate shape and a coating thickness. However, there is a problem in that the rubber roller R is worn out excessively, and the electrode paste P ′ may excessively adhere to the rubber roller R.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object of the present invention is to provide a linear electrode over a plurality of continuous surfaces of a three-dimensional electronic component body. An object of the present invention is to provide a device for attaching electrodes to an electronic component element body that can be formed accurately and efficiently.

[0006]

An electrode attaching device for an electronic component element body according to the present invention is provided with a holder for holding a three-dimensional electronic component element body, the holder being provided on one surface of the electronic component element body. A screen having an opening having an end extending outward from the electronic component body, and an opening provided between the holder and the screen and forming a space around the electronic component body. It is characterized by comprising an opened spacer and a dispenser provided with a nozzle for filling the electrode paste into the opening of the screen. Further, in the above apparatus, a plurality of electronic component bodies are held by the holder. further,
In the above apparatus, a plurality of openings are opened in the screen. Furthermore, in the above apparatus, a plurality of openings are formed in the spacer. Furthermore, in the above apparatus, the width of the end of the opening of the screen is narrowed or widened. Further, in the above apparatus, the diameter of the nozzle is smaller than, the same as, or larger than the opening of the screen. Further, in the above apparatus, a plurality of nozzles are arranged in the dispenser. Furthermore, in the above apparatus, the nozzle is moved according to the opening of the screen. Furthermore, the apparatus is characterized in that a control means for controlling the discharge amount of the electrode paste from the nozzle is provided. Further, in the above apparatus, a control means for controlling the movement of the nozzle is provided. Further, the nozzle is omitted, and instead of this, the electrode paste is ejected from a plurality of ejection holes of the nozzle assembly block.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of an apparatus for attaching an electrode paste to an electrode portion of an electronic component element body, in which 1 is an electronic element element body and a holder 2
Is held by.

A screen 3 has a large number of openings 3a as shown in FIG. 2 (A). The screen 3 plays a role of a mask that defines the shape of the coating pattern, and the pattern of the electrodes P formed on the electronic component element body 1 (in this embodiment, the four streak electrodes P shown in FIG. A metal having an opening 3a having the same shape as the pattern)
A thin plate or membrane made of synthetic resin or rubber. As shown in FIG. 1, the opening 3 a is located on the upper surface of the electronic component body 1.

Between the screen 3 and the holder 2,
A spacer 4 made of metal, synthetic resin or the like is inserted. As can be seen from FIG. 3, the spacer 4 is provided with an opening 4a larger than the electronic component body 1, and the electrode paste P'is provided on the side surface of the electronic component body 1 set therein. A space S is formed so that it can be press-fitted and applied (see FIG. 1). Further, by providing a space in this space S, the adhesion of the electrode paste P ′ to the spacer 4 can be avoided.

FIG. 4 shows a planar positional relationship among the electronic component body 1, the screen 3 and the spacer 4 assembled as described above. FIG. 1 described above shows an enlarged cross section taken along the line EE of FIG.

Referring again to FIG. 1, numeral 5 is a dispenser, which discharges the electrode paste from its nozzle 5a. The nozzle 5a may be smaller or larger than the opening 3a of the screen 3 (FIG. 4).
See). Further, the shape of the nozzle 5a may be circular, rectangular, or any other shape. The tip of the nozzle 5a may be rounded or tapered to facilitate smooth movement on the surface of the screen 3 without interference.
Further, the positional relationship between the tip of the nozzle 5a and the screen 3 in the vertical direction may be on the same plane, the tip of the nozzle 5a may be located in the opening 3a, or may be located upward from the screen 3. .

In FIG. 1, reference numeral 6 denotes a drive device which drives the dispenser 5 to move the nozzle 5a in the vertical and horizontal directions. Reference numeral 7 denotes a control device, which moves the nozzle 5a along the opening pattern of the opening 3a of the screen 3 as needed to form an accurate electrode pattern. By controlling the pressure of No. 5 and the discharge amount of the electrode paste from the nozzle 5a, the electrode pattern having a constant width and depth can be formed with high accuracy.

The device for attaching electrodes to the electronic component body according to the present embodiment is constructed as described above. Therefore, as shown in FIG. 1, the tip end of the nozzle 5a is brought close to the opening 3a of the screen 3 as well. As shown in FIGS. 5A and 5B, the electrode paste P ′ is ejected by being positioned on one side of the opening 3a. The discharged electrode paste P ′ has an opening 3a.
Not only is it applied inside to form an electrode pattern on the upper surface of the electronic component element body 1, but it also enters the space S formed by the spacer 4 and forms an electrode pattern on the side surface of the electronic component element body 1. In this case, the shape and size of the electrode formed on the side surface is adjusted by appropriately adjusting the viscosity of the electrode paste P '.

In a state where the electrode paste P'is discharged from the nozzle 5a, as shown in FIGS. 5 (C) and 5 (D),
The nozzle 5a is moved to the other side of the opening 3a, and the electrode paste P'is applied to the inside of the opening 3a to complete the electrode P. Also at this position, the electrode paste P'is allowed to flow down into the space S, and an electrode pattern is also formed on the opposite side surface to complete the streak-shaped electrode P pattern as shown in FIG.

In the above-described embodiment, one nozzle 5a is used to form a plurality of electrodes (in this embodiment, four lines) on a plurality of electronic component bodies 1. However, by providing a plurality of nozzles for one electronic component body 1 or a plurality of nozzles for a plurality of electronic component bodies 1, it is possible to improve work efficiency. May be. In this case, it is preferable to control the movement of a plurality of nozzles at the same time.

FIG. 6 shows an embodiment in which the dispenser 5 is provided with a nozzle assembly block 5'and a plurality of nozzles 5a are arranged in the nozzle assembly block 5 '.
Corresponds to each opening 3 a of the screen 3. In addition,
Each nozzle 5a may be associated with each electronic component body 1. The work efficiency is improved by the plurality of nozzles 5a.

In FIG. 7, the length of the nozzle 5a in the embodiment of FIG. 6 is shortened to the limit, and the nozzle 5a is substantially omitted. Instead of this nozzle 5a, the discharge hole 5a of the nozzle assembly block 5'is provided. This is another embodiment in which the electrode paste P'is directly discharged from the opening 3'of the screen 3 to the opening 3a. The structure of this embodiment not only improves the accuracy of the discharge position of the electrode paste P ′, but also prevents damage due to contact between the nozzle 5a and the surface of the screen 3.
The effects of avoiding clogging of the electrode paste P ′, facilitating cleaning, and reducing manufacturing costs are achieved.

Further, the shape of the electrode may not always be the same as the shape of the opening of the screen depending on the properties of the electronic component body 1 and the electrode paste P '. That is, even in the case of the rectangular opening 3a as described above, the width of the electrode pattern on the side surface formed by flowing down from both ends thereof is wider or narrower than the width of the electrode pattern on the upper surface. There are cases. When it becomes wider, the width of both end portions 3a 'is narrowed as shown in FIG. 2B, and when it becomes narrower, the width of both end portions 3a "is made as shown in FIG. 2C. May be widened and adjusted.

Further, in order to form the electrodes with high accuracy,
It is necessary to align the openings of the screen and the openings of the spacer with high accuracy. Therefore, the screen and the spacer may be mounted on the same frame, or both the frames may be formed in a nested manner, or the screen and the spacer may be integrally formed.

[0020]

1) A holder for holding a three-dimensional electronic component body, and an opening having an end portion which is arranged on one surface of the electronic component body and extends outward from the electronic component body. And a spacer that is interposed between the holder and the screen and that has an opening that forms a space around the electronic component body, and the electrode paste is filled in the opening of the screen. Since it is composed of a dispenser provided with a nozzle to perform, it is possible not only to accurately and efficiently form the streak-like electrodes over a plurality of continuous surfaces of the three-dimensional electronic component element body, but also to the upper surface of the screen. Excessive adhesion can be suppressed and useless consumption of expensive electrode paste can be prevented. 2) By providing a plurality of nozzles, work efficiency can be improved. 3) By substantially omitting the nozzles and directly discharging the electrode paste from a plurality of discharge holes of the nozzle assembly block provided in the dispenser, the discharge amount and the discharge position of the electrode paste due to variations in nozzle processing and mounting. Not only can improve the accuracy by suppressing the dispersion of the, but also have the effects of preventing damage due to contact with the screen surface, avoiding clogging of the electrode paste, facilitating cleaning, reducing manufacturing costs, etc. .

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an example of an electrode attaching device for an electrode paste to an electrode portion of an electronic component body according to the present invention.

2 is a plan view of a screen of the device of FIG. 1. FIG.

3 is a plan view of a spacer of the device of FIG.

FIG. 4 is a plan view illustrating a positional relationship among an electronic component element body, a screen, and a spacer.

5 is an explanatory view of an electrode attaching operation of the electrode paste by the apparatus of FIG.

FIG. 6 is a cross-sectional view of an embodiment provided with a plurality of nozzles.

FIG. 7 is a sectional view of an embodiment in which a nozzle is omitted.

FIG. 8 is a diagram showing an example of an electronic component body.

FIG. 9 is an explanatory diagram of a conventional electrode attachment device.

[Explanation of symbols]

1 Electronic component body 2 holder 3 screen 3a opening 4 spacers 4a opening 5 dispensers 5'nozzle assembly block 5a nozzle 5a 'discharge hole 6 drive 7 Control device P electrode P'electrode paste S space

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01C 17/06 B05C 5/00 101

Claims (11)

(57) [Claims] 1. A holder for holding a three-dimensional electronic component body, and an opening provided on one surface of the electronic component body and having an end portion extending outward from the electronic component body. A screen, a spacer provided between the holder and the screen and having an opening formed around the electronic component element body, and a nozzle for filling an electrode paste into the opening of the screen. A device for attaching an electrode to an electronic component body, the device comprising a dispenser provided with. 2. The device for attaching an electrode to an electronic component body according to claim 1, wherein a plurality of electronic component bodies are held by the holder. 3. The device for attaching an electrode to an electronic component body according to claim 2, wherein a plurality of openings are formed in the screen. 4. The device for attaching electrodes to an electronic component body according to claim 2, wherein a plurality of openings are formed in the spacer. 5. The width of the end of the opening of the screen is narrowed or widened.
The device for attaching an electrode to an electronic component element body according to 2, 3, or 4. 6. The device for attaching an electrode to an electronic component body according to claim 1, wherein the diameter of the nozzle is smaller than, the same as, or larger than the opening portion of the screen. 7. The device for attaching an electrode to an electronic component element body according to claim 2, wherein the dispenser is provided with a nozzle assembly block having a plurality of nozzles arranged therein. . 8. The nozzle is omitted, and instead of this, the electrode paste is directly discharged from a plurality of discharge holes of the nozzle assembly block to each opening of the screen. A device for attaching an electrode to an electronic component element body according to 1. 9. The electronic component element body according to claim 1, wherein the nozzle or the discharge hole is moved in accordance with an opening portion of a screen. Electrode attachment device. 10. A control means for controlling the discharge amount of the electrode paste from the nozzle or the discharge hole is provided. 9. A device for attaching an electrode to an electronic component body according to item 9. 11. A control means for controlling the movement of the nozzle or the discharge hole is provided.
The electrode attachment device for an electronic component body according to 2, 3, 4, 5, 6, 7, 8, 9 or 10.