JP2000049448A - Automatic flux coating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic flux coating device, which prevents flux from being squeezed out outside a flux coating nozzle and can coat accurately the flux on a flux coating surface. SOLUTION: An inner wall 5 surrounding a flux surface and an outer wall 3 formed higher than this inner wall 5 are provided separately from each other on the upper part of a flux coating nozzle 6 in a flux feeding unit, and a through hole 4 for flux elimination communicating between these walls 5 and 3 is provided. It is preferable that the hole 4 is opened in the lower surface of the nozzle 6 facing the upper part of a flux tank 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for applying a flux to a flux object such as a substrate, and more particularly to a flux supply apparatus and an apparatus for applying a flux onto a flux application nozzle of the flux supply apparatus which faces upward. The present invention relates to an automatic flux applying device that is combined with a robot that conveys and presses against a flux surface.

[0002]

2. Description of the Related Art FIG. 3 shows an example of a conventional automatic flux coating apparatus, which comprises a robot 1 for transporting a substrate 2 to be coated with a flux, a flux tank 8, a pump 7 and a nozzle 10 for flux coating. And a combined flux supply device.

The flux 9 in the flux tank 8 is pumped up to a nozzle 10 facing upward by a pump 7,
The flux 9 filled in 0 rises from above the nozzle due to surface tension. The flux application is performed by pressing the flux application surface of the substrate 10 against the raised flux surface. This operation is automatically performed by the robot 1.

[0004]

The above-mentioned prior art; the automatic flux coating apparatus shown in FIG. 3 has the following problems. That is, as shown in FIG. 3, when the flux is applied by pressing the flux application target; the substrate 2 onto the flux surface raised by the surface tension above the flux application nozzle 10, a part of the flux is applied. Protrudes from the nozzle 10 and adheres to the mounting parts on the back surface of the substrate 2 where the flux application surface is not required as indicated by reference numeral 9 '; in the case of the substrate 2, the contact portion such as a connector causes poor contact.

Therefore, the problems to be solved by the present invention (objects)
An object of the present invention is to provide an automatic flux applying apparatus capable of preventing a flux from flowing out of a flux applying nozzle and accurately applying a flux to a flux applied surface.

[0006]

According to the present invention, there is provided an automatic flux applying apparatus, comprising: an inner wall surrounding a flux surface and an outer wall having a height higher than the inner wall provided above a flux applying nozzle in a flux supplying apparatus. And a through hole for flux discharge communicating between the inner wall and the outer wall.

According to the above-mentioned automatic flux coating apparatus, when a flux application target is pressed against a flux surface raised by surface tension on a nozzle, a part of the flux overflows through the inner wall. The overflowed flux is discharged to the outside of the nozzle through the through-hole for discharging the flux inside the outer wall of the nozzle. You will not be polluted by the minute. Further, since the flux is not applied to the unnecessary portion as described above, the flux application area can be made constant, and the flux can be applied only to the really necessary flux application surface.

[0008] By forming a through hole for discharging the flux on the lower surface of the flux application nozzle facing the flux tank, it is possible to collect the overflowing flux into the flux tank.

[0009]

1 and 2 show a preferred embodiment of an automatic flux coating apparatus according to the present invention. FIG. 1 shows a state immediately before flux application, and FIG. 2 shows a state at the time of flux application. Are respectively shown.

[0010] The automatic flux coating apparatus of this embodiment
The flux application target is a substrate 2, and is composed of a combination of a robot 1 for transporting and operating the substrate 2 and a flux supply device.

The flux supply device includes a flux tank 8, a pump 7, and a flux application nozzle 6. The flux in the flux tank 8 is pumped up by the pump 7, the inside of the nozzle 6 is filled with the flux 9, and the flux surface itself is formed. 1 and waits until the flux is applied.

In the upper part of the nozzle 6, an inner wall 5 surrounding the surface of the flux 9 and an outer wall 3 higher than the inner wall are provided apart from each other. And a flux discharge through hole 4 communicating with the bottom of the groove is formed, and the through hole 4 is opened on the lower surface of the nozzle 6 facing the flux tank 8.

According to the automatic flux applicator configured as described above, as shown in FIG. 1, when the surface of the flux 9 filled in the nozzle 6 is raised, Then, the flux application section of the substrate 2 transported by the robot 1 is lowered as shown in FIG. 2 and pressed against the surface of the flux 9, whereby the flux is automatically applied. At this time, a part of the flux 9 overflows over the inner wall 5 as shown in FIG. 2, and the overflowed flux is discharged from the groove through the through hole 4 and below the nozzle 6 as indicated by reference numeral 9 '. Collected in 8.

Therefore, the flux that overflows beyond the inner wall 5 of the nozzle due to the pressing and application to the flux surface of the substrate 2 is reliably discharged to the outside of the nozzle without leaking from the outer wall 3 of the nozzle. Can be applied only to the flux application surface.

[0015]

According to the present invention as described above, there is provided an automatic flux coating apparatus capable of preventing the flux from flowing out of the flux coating nozzle and accurately applying the flux to the flux coating surface. The task (purpose) of the period can be achieved.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an embodiment of an automatic flux applying apparatus according to the present invention in a state immediately before flux application.

FIG. 2 is an explanatory diagram showing the automatic flux application device shown in FIG. 1 under a flux application situation.

FIG. 3 is an explanatory view showing an example of a conventional automatic flux application device under a flux application condition together with problems at that time.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Robot 2 Substrate (object to apply flux) 3 Outer wall 4 Through hole 5 Inner wall 6 Nozzle 7 Pump 8 Flux tank 9 Flux 9 'Flux (overflow)

Claims (2)

[Claims] 1. A flux supply device comprising: a flux supply device; and a robot for transferring a flux application target onto an upward flux application nozzle of the flux supply device and pressing the flux application object against a flux surface. Automatic flux coating, in which an inner wall surrounding the flux surface and an outer wall higher than the inner wall are provided apart from each other, and a flux discharging through hole communicating between the inner wall and the outer wall is provided above the nozzle. apparatus. 2. The automatic flux coating device according to claim 1, wherein the flux discharge through hole is formed in the lower surface of the flux coating nozzle facing the flux tank.