JPH03218814A - Surface bonding device - Google Patents

Abstract

PURPOSE:To prevent a bonding agent layer from getting mixed with foams by providing upper and lower tables for fixing first and second materials to be bonded and a turnover driving mechanism and turning over the upper table after applying a bonding agent and an up and down driving mechanism for pressure bonding the bonding surfaces of the first and second materials to be bonded on the upper surface section. CONSTITUTION:First and second materials 1 and 2 to be bonded are fixed on the upper surface sections of upper and lower tables 4 and 5 and a bonding agent 3 is applied linearly on a bonding surface 1a of the first material to be bonded 1 while a coating head 7 of a bonding agent applying device 21 is moved. A turnover driving mechanism 22 is actuated and the upper table 4 is turned over in a manner of facing the bonded surface 1a of the first material to be bonded 1 downward. Even in the case that the applied bonding agent 3 is of low viscosity by turn the bonding surface 1a downward, the bonding agent 3 is prevented to be stretched all over and flattened, and the swelling downward is enlarged by gravity. Thus, the bonding agent area to be brought into contact first at the time of overlapping the first and second materials 1 and 2 can be minimized to make foams hard to be mixed with a bonding agent layer. The lower table 5 is lifted up and moved by the action of an up and down driving mechanism 23 to pressure bond the first material to be bonded 1 and the second material to be bonded 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a surface bonding device that performs surface bonding of a first adherend and a second adherend using an adhesive.

(Prior Art) As a conventional surface bonding device, one to which a surface bonding method as shown in FIGS. 3 and 4 is applied is known. That is, the surface adhesion method shown in FIG.
Adhesive 3 is applied to the center of the upper surface of the second adherend 2 located on the lower side in a bulging manner as shown in Fig. 3(a). Place the first adherend 1 on top of the second adherend 2 with the surface 2a) facing upward.
The first adherend 1 and the second adherend 2 are polymerized as shown in Figure 3(d) by slowly overlapping them as shown in Figures (b) and (c) and applying pressure so that the adhesive 3 stretches flatly. Glue.

In addition, in the surface bonding method shown in FIG. 2, both adhesives 1a,
The adhesive 3.3 of the first adherend 1 is applied to the adhesive 3.3 as shown in FIG. Adhesive surface 2 coated with
1. with a facing upward. Slowly overlap the second adherend 1.2 as shown in FIG. 4(b)(C), and then apply the adhesive 3
The first adherend material 1 and the second adherend material 2 are polymerized and bonded together as shown in FIG. 4(d) by applying pressure so that they stretch flat.

(Problem to be Solved by the Invention) However, in the case of the surface bonding method shown in FIG. 3, if the viscosity of the adhesive 3 is low, the adhesive 3 applied to the second adherend 2
spread laterally, the central bulge becomes flat, and when the first and second adherends 1 and 2 are overlapped, air bubbles get mixed into the adhesive layer, causing quality problems, as shown in Figure 4. In the case of the surface bonding method, the adhesive 3, 3 is applied to both the first and second materials 1, 2, so not only does it take time to apply the adhesive, but also there may be slight variations in undulations on both the top and bottom surfaces. Since the adhesives 3 and 3 are stacked on top of each other, air bubbles are mixed into the adhesive layer, causing quality problems.

This invention was made in order to solve the above-mentioned conventional problems, and its purpose is to avoid using a low-viscosity adhesive or a high-viscosity adhesive to bond the first adherend and the second adherend. To provide a surface bonding device which prevents air bubbles from being mixed into an adhesive layer even when an adhesive is used.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the surface bonding apparatus of the present invention includes an upper table spaced vertically and capable of fixing a first adherend material and a second adherend material to the upper surface part; A lower table, an adhesive applicator that linearly applies adhesive to the adhesive surface of the first adherend fixed to the upper table, and an adhesive applicator that linearly applies adhesive to the adhesive surface of the first adherend fixed to the upper table; A reversing drive mechanism that inverts the upper table so that it faces downward; and a reversing drive mechanism that moves one or both of the upper and lower tables in the direction of bonding the adherends after reversing the upper table, and connects the bonding surface of the first adherend to the second adherend. The structure includes a vertical drive mechanism that pressure-bonds the adhesive surfaces of the materials in a polymerized state.

The vertical movement mechanism may move the upper table downward in the bonding direction of the adherends so that the adhesive surface of the first adherend material is pressed against the adhesive surface of the second adherend material after the upper table is reversed. Alternatively, both the upper and lower tables may be moved up and down relative to the bonding direction of the adherends, but the table should not be moved up and down to the downwardly inverted adhesive (if the adhesive is of low viscosity) In order to prevent adhesive vibration dripping (in some cases), the lower table should be moved in the direction of the lance joining so that the adhesive surface of the second adherend is pressed against the adhesive surface of the first adherend after the upper table is turned over. It is desirable to adopt a vertical movement mechanism that moves the device up and down.

(Function) According to the surface bonding device having the above configuration, since the adhesive-applied surface of the first adherend is facing downward when the upper table is inverted, even if a low-viscosity adhesive is used, the surface bonding device can be inverted downward. The adhesive becomes a bulge of adhesion that hangs downward, and the third
Unlike the surface bonding method shown in the figure, it does not stretch flat due to gravity.

Further, even in the case of a highly viscous adhesive, the downwardly inverted adhesive is pulled downward by the action of gravity, resulting in a bulge of adhesion that hangs downward.

Therefore, by moving one or both of the upper and lower tables in the direction of joining the first and second materials,
When bonding the adhesive surface of the adherend under pressure to a polymerized state, the adhesive is flattened uniformly from the top and the adherend is properly bonded to prevent air bubbles from entering the adhesive layer. Can be attached to the surface.

(Embodiment) Hereinafter, a surface bonding apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. In the figure, reference numeral 4 denotes an upper table having means (not shown) for fixing the first adherend 1 on its upper surface;
Reference numeral 5 denotes a lower table having a means (not shown) for fixing the second attachment material 2 on its upper surface, and the upper and lower tables 4.5 are arranged to face the apparatus frame 20 with a parallel interval in the vertical direction.
It is arranged on the front side as shown in Fig. 1.

Reference numeral 21 denotes an adhesive applicator that applies the adhesive 3 in a linear manner to the adhesive 1a of the first adherend 1 fixed on the upper table 4 as shown in FIG. 2(b). A coating head 7 held by a dispenser 6 and a movable arm 7a, and a stepping mower 8 serving as a movable arm drive mechanism that moves the coating head 7 linearly along the upper table 4.
, a ball screw 9, and a horizontal linear guide lO. Reference numeral 22 denotes a reversing drive mechanism that inverts the upper table 4 as shown in FIG. It is comprised of an upper table rotation bearing 11 fixed to the front side of the upper table 20, and a rotary actuator 12 that rotates the upper table 4 vertically.

23 is the neck attachment 2 of the second limb dressing 2 after the upper table 4 is turned over.
a is pressed against the adhesive 1a of the first adherend 1,
This vertical drive mechanism 23 moves the lower table 5 upward in the joining direction of the materials to be joined.
It is composed of a vertical linear guide 9 that guides the vertically movable vertically.

Thus, the surface bonding device having the above configuration has the first and second adherends 1
, 2 are fixed to the upper surface of the upper and lower tables 4.5 as shown in FIG. Agent 3 is applied in a linear manner as shown in FIG. 2(b). After applying this adhesive, the reversing drive mechanism 22 is operated to
The upper table 4 is turned over as shown in FIG. 2(c) so that it faces downward. By turning the adhesive 1a of the first adherend 1 on which the adhesive 3 is applied downward, even if the applied adhesive 3 has a low viscosity, the adhesive 3
This prevents it from spreading out and becoming flat, and the downward bulge increases due to the action of gravity. For this reason, the first and second adherends 1
．． The area of the adhesive that comes into contact with the first layer when stacking the two layers is reduced, making it difficult for air bubbles to enter the adhesive layer.

When the upper table 4 is inverted to the state shown in FIG. 2(C), the lower table 5 is moved upwardly as shown in FIG. 2(d) and (e) by the operation of the vertical movement mechanism 23, and the first material 1st and 2nd
The adherend 2 is bonded under pressure as shown in FIG. 2(f). In this case, by slowing down the rising speed of the lower table (this speed adjustment can be easily performed by the stepping motor 13), the adhesive surface 2a of the second adherend 2 can be exposed to the adhesive 3.
As shown in Figure (e), it is possible to prevent the inclusion of air bubbles due to air entrainment when the adhesive 3 is brought into contact and spread out, and the lower second adherend 2 is The adhesive 3 can be spread easily under the influence of gravity. Then, by pressing the lower table 5 upwardly and pressurizing the excess adhesive from the joint portion of the materials to be applied, surface adhesion without air bubbles can be achieved.

In the above embodiment, the lower table 5 is moved upward by the operation of the vertical movement mechanism 23. Is the adhesive surface 1a the second? ll' material 2
The upper table 4 is moved downward in the bonding direction so as to be pressed against the bonding surface 2a of the bonding surface 2a, or both the upper and lower tables 4.5 are moved up and down relatively in the bonding direction of the adherends. It may be.

〔Effect of the invention〕

As explained above, according to the surface bonding device of the present invention, the first
Even if a low viscosity adhesive or a high viscosity adhesive is used for the surface bonding of the adherend and the second adherend, the first adherend and the second adherend can be bonded together as an adhesive layer. It has excellent effects such as good surface adhesion without the inclusion of air bubbles.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view showing a surface bonding device according to an embodiment of the present invention, FIG. 2 is an operational explanatory view showing a method of surface bonding an adherend by the same device, and FIGS. 3 and 4 are FIG. 2 is an explanatory diagram showing a conventional surface bonding method. 1: first adherend, la: adhesive surface of first adherend,
2. Second adherend, 2a... Adhesive surface of second adherend, 3
. . . adhesive, 4 . . . upper table, 5 . . . lower table, 2 l . . . adhesive applicator, 22 .

Claims (2)

[Claims] (1) Adhesive is applied to the adhesive surface of the upper table and lower table, which are spaced apart from each other, and the first adherend material fixed to the upper table, on which the first adherend material and the second adherend material can be fixed. an adhesive applicator that applies linearly; an inversion drive mechanism that inverts the upper table so that the adhesive surface of the first adherend faces downward after applying the adhesive; and one of the upper and lower tables after the upper table is inverted. A surface bonding device comprising a vertical drive mechanism that moves one or both of them in the direction of bonding the adherends and pressurizes and bonds the bonding surface of the first adherend and the bonding surface of the second adherend in a superposed state. . (2) The vertical drive device moves the lower table upward in the bonding direction of the adherends so that the adhesive surface of the second adherend is pressed against the adhesive surface of the first adherend after the upper table is reversed. The surface bonding device according to claim 1, characterized in that: