JPH05261336A - Resin coating method - Google Patents

Abstract

PURPOSE:To achieve the quantification and stable control of the coating amount of a flowable resin at the time of the coating with the resin. CONSTITUTION:Recessed parts 12 are formed on the upper surface of a rotary disc 11 and a flowable resin 1 is placed on the upper surface of the rotary disk 11 and the recessed parts 12 are filled with a part of the resin 1 by the scraper 3 fixed so as to come into contact with the upper surface of the rotary disc 11 and the resin coated surface of a desired part 5 is brought into contact with the upper surface of the rotary disc 11 to cover the resin coated surface with the resin 1 received in the recessed parts. Further, the amount of the resin applied to the resin coated surface is controlled by changing the pitch or depth of the recessed parts 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for applying a predetermined amount of resin to a predetermined surface of a desired part.

[0002]

2. Description of the Related Art FIG. 4 is an explanatory view of a conventional method for applying a resin to a lower surface of a desired part, and FIG. 5 shows a resin layer applied to a rotating disk and a resin layer applied to a resin applied surface of a desired part by a conventional method. FIG. 3 is a diagram for explaining the relationship between FIG.

In FIG. 4, in the conventional resin coating device, when the rotary disk 2 on which an appropriate amount of the fluid resin 1 is placed rotates, the scraper 3 fixed to the upper surface of the rotary disk 2 at an appropriate interval.
Thus, the resin layer 4 having a constant thickness is formed on the upper surface of the rotating disk 2.

Therefore, the cap (desired part) 5 is sucked and the vertically movable pick upper 6 is lowered, the lower surface (resin-coated surface) of the cap 5 is dipped in the resin layer 4, and then,
When the pick upper 6 is raised, a part of the resin layer 4 is applied to the lower surface of the cap 5 to form the resin layer 7 (see FIG. 5).

In such a coating method, there must be no resin-uncoated portion on the lower surface of the cap 5,
Although the resin layer 4 is immersed in the resin layer 4, the thickness of the resin layer 4 varies due to an error in the fixed position of the pick upper 6 and the viscosity of the resin, and the cap 5 is immersed in the resin layer 4 due to variations in the dimensions of the cap 5. The amount will vary. Therefore, the thickness of the resin layer 7 is generally 20-100 μm.
It had the drawback of varying in m.

In FIG. 5, the distance t (see FIG. 4) between the lower surface of the cap 5 and the upper surface of the disk 2 when immersed in the resin layer is taken as the horizontal axis, and the thickness T of the resin adhered to the lower surface of the cap 5 is represented by On the vertical axis, the thickness T of the resin film 7 increases in proportion to the interval t.

[0007]

Conventionally, for example, the cap 5 is used in a package for hermetically sealing an electronic element, the resin 1 is an adhesive, and the thickness of the resin layer 7 is large. If you want to make the size about 50 μm,
The resin film 7 applied to the cap 5 has a thickness of 50 μm or more (for example, about 100 μm) to remove excess resin, which is a waste and a trouble in the process, and after removing the excess resin. There is a problem in that the variation in the amount of resin in the above is unavoidable.

[0008]

[Means for Solving the Problem] Desired part (cap) 5
The method of the present invention aimed at stabilizing and adjusting the amount of resin applied to a predetermined surface (lower surface) of the above-mentioned method, according to the embodiment shown in FIG. The place 12 is formed, the fluid resin 1 is placed on the upper surface of the rotating disk 11, and the recess 12 is partially filled with the scraper 3 fixed so as to abut on the upper surface of the rotating disk 11. The lower surface is brought into contact with the upper surface of the rotary disk 11, a part of the recess filling resin 1'is applied to the lower surface of the cap 5, and the resin layer 13 is applied and formed on the lower surface.

[0009]

According to the above means, the recess 12 on the upper surface of the rotating disk 11
The resin 1'in the recess is transferred to the lower surface of the cap 5 by filling the lower surface of the cap 5 with the upper surface of the rotary disk 11 by filling the lower surface of the cap 5 with the liquid resin 1, and the lower surface of the liquid resin layer 13 is formed. It

Therefore, the amount of resin in the resin layer 13 on the lower surface of the cap 5 can be quantified, and the amount of resin can be adjusted by changing the pitch or depth of the band-shaped recesses 12, thus eliminating the conventional step of removing excess resin. become.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of an embodiment of the method of the present invention, FIG. 2 is a plan view showing a recess formed in a rotary disk by the method of the present invention (No. 1), and FIG. It is a top view (the 2) showing a formed crevice.

In FIG. 1 (a), the resin coating apparatus according to the method of the present invention forms a large number of recesses 12 having a V-shaped cross section on the upper surface of a rotary disk 11, and the scraper 3 has its tip abutting on the upper surface of the rotary disk 11. Fix in contact. In the rotating disk 11 for holding the resin 1 on the upper surface, the shaft 15 rotating with the rotating disk 11 is centered and the side wall 16 is projected from the outer peripheral part.

Therefore, when an appropriate amount of the fluid resin 1 is placed on the upper surface of the rotating disk 11 and the rotating disk 11 is rotated, a part 1 of the resin 1 is placed in each recess 12 ahead of the scraper 3 in the rotating direction. ′ Is filled and the lower surface of the cap 5 adsorbed to the pick upper 6 is brought into contact with the upper surface of the rotating disk 11, and then the cap 5 is pulled up, as shown in FIG.
The resin 1 ′ filled in the recess 12 is transferred to the lower surface of the resin layer 13 to deposit and form the resin layer 13.

The thickness (quantity) of such a resin layer 13 is made constant by the shape of the recesses 12 and the formation density thereof.
The thickness could be 50-60 μm. 2 (b), the rotary disk 11 _-1 top, the rotation disk 11 _-1 concentric V-shaped section recess 12 _-1, and in the radial direction of the rotary disk 11 _-1 a continuum formed, The recess 12 _-1 has, for example, a V-shaped cross section of 60 degrees and a depth of about 150 μm.

In FIG. 2B, the rotary disk 11 _-2 has a V-shaped recess 12 _-2 and 12 _{-3 on its} upper surface, which is concentric with the rotary disk 11 _-2.
Are continuously formed in a V-shaped cross section of 60 degrees in the radial direction of the rotating disk 11 _-2 .

[0016] However, the recess _12-2 relative to recess 12 _-3 Yes made shallow, therefore, the recess 12 amount of resin filled into _-2 recess 12 _-3
The resin layer (13) on the resin-coated surface in contact with the recess 12 _-2 is thicker than the resin layer (13) on the resin-coated surface in contact with the recess 12 _-3. Become.

In FIG. 3, the rotary disk 11 _-3 has V-shaped recesses 12 _-4 and 12 _{-5 on its} upper surface so that the pattern has a hexagonal shape.
While the recess 12 _-4 is continuous in the radial direction of the rotating disk 11 _-3 , the recess 12 _-4 is shallower than the recess 12 _-4.
-5 is opened in the radial direction of the rotating disk 11 _{-3 with} a constant gap. Thus, the recess 12 abutting the resin coated surface of the resin layer ₄ (1
3) is thicker than the resin layer (13) on the resin-coated surface which is in contact with the recess 12 _-5 .

[0018]

As described above, according to the method of the present invention, not only the amount of resin applied to a desired component is stabilized, but also the amount of applied resin can be adjusted easily and reliably. Therefore, when the method of the present invention is applied to hermetically sealing a package, the effect of improving productivity and reliability of hermetic sealing is remarkable.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of the method of the present invention.

FIG. 2 is an explanatory view (No. 1) of the recess formed in the rotating disk by the method of the present invention.

FIG. 3 is an explanatory view (No. 2) of the recess formed in the rotating disk by the method of the present invention.

FIG. 4 is an explanatory diagram of a conventional method of applying a resin to the lower surface of a desired component.

FIG. 5 is an explanatory diagram of a relationship (variation in applied resin layer thickness) between a resin layer applied to a rotary disk and a resin layer applied to a predetermined surface of a desired component by a conventional method.

[Explanation of symbols]

1 is a fluid resin 3 is a scraper for filling the resin in the recess of the rotating disk 1'is the resin filled in the recess 5 is the cap (desired part) 11, 11 _-1 , 11 _-2 , 11 _-3 is the rotation Disks 12, 12 _-1 , 12 _-2 , 12 _-3 , 12 _-4 , 12 _-5 are recesses formed on the upper surface of the rotating disk 13 are resin layers applied on the lower surface (resin application surface) of the cap

Claims (2)

[Claims] 1. A rotating rotating disk (11,11)_-1, 11_-2, 1
1_-3) On top of the recess (12,12_-1, 12_-2, 12_-3, 12_-Four, 12_-Five)
 To form the rotating disk (11,11_-1, 11_-2, 11_-3) On the upper surface
Place the fluid resin (1) on the rotating disk (11,11_-1, 11_-2, 11
_-3) To the scraper (3) that is fixed so that
Therefore, the recess (12,12_-1, 12_-2, 12_-3, 12 _-Four, 12_-Five) To
Fill a part of the resin (1) with the resin coated surface of the desired component (5).
The rotating disk (11,11_-1, 11_-2, 11_-3) Contact the upper surface of
Make sure to coat the resin coating surface with the filling resin (1 ') in the recess.
And a resin coating method. 2. The rotating disk (11_-2, 11_-3)
Divide into several areas and use multiple
The strip-shaped recess (12_-2, 12_-3Or 12_-Four, 12 _-Five)
The resin is applied to any of the divided areas by changing the depth or depth.
Depending on whether the surfaces are brought into contact with each other, the resin applied to the resin-coated surface
The amount of fat is made different, The claim 1 characterized by the above-mentioned.
Resin coating method.