JPS62101675A - Bonding of plural members with electromagnetic induction adhesive - Google Patents

Abstract

PURPOSE:To effect bonding easily and firmly between plural members made of metal, synthetic resin, wood, etc., by applying an electromagnetic induction adhesive to the surface to be bonded of each member, applying a high-frequency magnetic line of force thereon, and pressing those plurality of members. CONSTITUTION:An electromagnetic induction adhesive 8' which will melt by electromagnetic force is applied to the surface to be bonded of each of a plurality of members 1' and 1'; a high-frequency magnetic line of force is applied on the adhesive 8' to make it flowable; and the plurality of members 1' and 2' are then pressed. Thus, a part of the flowable electromagnetic induction adhesive is allowed to flow into the space between the plurality of members 1' and 2' to effect bonding thereof. The electromagnetic induction adhesive comprises an uncured thermosetting resin having a ferromagnetic substance incorporated therein.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an adhesive force method using electromagnetic three conductive adhesive bonding of a plurality of members made of metal, synthetic resin, etc.

(Prior Art) Conventionally, for example, as shown in FIG. 4, the convex part of a convex member a is tightly fitted into a hole in a metal plate C, and then the four parts of a concave member are tightly fitted,
In order to adhesively fix the convex member a and the concave member S as multiple members, an ultrasonic horn is brought into contact with the members, pressure is applied, and contact is performed by molecular fusion of the corresponding surfaces of the multiple members. Such adhesion is made of synthetic + A4A4 material, and an O-ring d is used as shown in the figure to make watertight or oiltight between the metal plate C and the synthetic resin members a and b. However, although it is not possible to bond metals and 64 resin or multiple members made of metals using ultrasonic waves, other bonding methods must be used.

(Problems to be Solved by the Present Invention) As mentioned above, it is possible to bond multiple synthetic resin members without using an adhesive, but bonding multiple members made of metal and resin or metal and metal requires adhesive. In many cases, it is necessary to match the properties of the adhesive, and especially when using instant adhesives, adhesive techniques are difficult and often require skill. The present invention seeks to solve this problem by using an electromagnetic induction adhesive. Electromagnetic induction adhesive contains an uncured thermosetting resin and a ferromagnetic substance, and is solid at room temperature, so it is ring-shaped,
It has the characteristic that it can be easily formed into a plate shape or the like.

(Means for Solving the Problems) The present invention aims to solve the above-mentioned point m, and uses an electromagnetic induction adhesive glue that melts by electromagnetic force on each adhesion compatible surface of a plurality of members. Insert the adhesive, apply high-frequency magnetic lines of force to the electromagnetic induction adhesive to generate fluidity, pressurize the plurality of members, and use fluid electromagnetic induction M to cause part of the adhesive to flow into the gap between the plurality of members. It is characterized by being glued together.

(Embodiment) The accompanying drawings show an embodiment of the present invention, in which the convex portion (1a) of the convex member (1) is a ring-shaped plate member as shown in FIG.

(2) in a tight fit, and then fit the convex part (1a) into the concave member (3), and then connect the convex member (1), the ring-shaped plate member (2), and the concave member (3). This shows a mode in which multiple members are joined by welding. When fitting the outer periphery of the convex part of the convex member (1) and the inner periphery of the concave member (3), a concave groove (4) is formed on the corresponding surface.
), (5), and the upper surface of the groove (5) is open so that the upper surface of the groove (5) can contact and correspond to the lower surface of the ring-shaped plate member (2).

In this embodiment, the tip end surface of the convex portion (1a) of the convex member (1) is brought into contact with the inner bottom surface (3a) of the concave member (3), and as shown in FIG. ptS1 electromagnetic induction adhesive formed into a flat ring shape (6)
A second electromagnetic guiding adhesive (7) formed into a ring shape with a large thickness is fitted into the grooves (4) and (5) through the grooves (4) and (5), and the adhesive is applied to the lower surface of the ring-shaped plate member (2). also come into contact. PjS
l. The second electromagnetic induction adhesive is made by mixing ferromagnetic powder such as fine iron powder with uncured thermoplastic adhesive so that it solidifies at room temperature, and is in the same phase at room temperature. because there is,
It can be molded into a desired shape or cut with a knife. Incidentally, since it is impossible to fit the second electromagnetic induction adhesive into the groove (4) if it is ring-shaped, a ring-shaped second electromagnetic induction adhesive is used in combination with a ring-shaped second electromagnetic induction adhesive divided into two in the radial direction.

Ii after completing the preparation for gluing as described above? Install the three members listed in f on a stand (11) equipped with an induction coil inside,
A pressure plate (12) having an induction coil inside is lowered from above and is sandwiched between the table (11) and the pressure plate (12), and one of the induction coils is connected to the O pole of the high frequency power source. , connect the other induction coil to the ○ pole of the high frequency power supply and energize it,
Place the three members mentioned above in the magnetic field between the induction coils. At that time, the magnetic field lines that form the magnetic field excite the induction particles in the second electromagnetic induction adhesive to generate heat, and the heat generation causes O
The uncured synthetic tree layer shown in η flows into the gap between the convex member (1), the ring-shaped plate member (2), and the concave member (3) that are subjected to pressure, and forms the bonding surfaces (6), ( 7), and at the same time harden the uncured thermoplastic 8 (grease).Therefore, take the time to complete curing, interrupt the electricity supply, and then spread the base (11).
and pressurization Fj, (12) are cooled by passing cooling water through each of them.

When the ring-shaped plate member is not glued as shown in Fig. f53, it approaches in the arrow direction or is symmetrical to the fitting corresponding surface of the multiple members (1') and (2') fitted as shown in Fig. 1. Recessed grooves (4') and (5') are formed, and a molded product (8') of electromagnetic induction adhesive is fitted into each of the recessed grooves. Of course, multiple parts (1
′) and (2′) according to Fig. 1, separately fit two pieces of electromagnetic induction adhesive in the thickness direction into each of the grooves (4′) and (5′). , multiple members (1'), (
2'), it is tightly joined by fitting.

(Operations and effects of the present invention) The present invention is characterized in that the adhesion compatible surfaces of multiple members are excited by the action of high-frequency magnetic lines of force and heated to melt uncured thermosetting resin (M resin in a flowable manner and thermosetting υ (An electromagnetic induction adhesive that produces an adhesive effect by curing fat is used, and a magnetic substance dispersed in the adhesive is exposed to an electromagnetic induction atmosphere for a short period of several seconds to several tens of seconds to bond.

The present invention performs adhesion as described above, and can easily and firmly bond not only resins and resins, metals of the same type, but also dissimilar materials such as resins and metals, and resins and wood. It has the effect that it can.

[Brief explanation of drawings]

The attached drawings show embodiments of the present invention, and FIG. 1 is a longitudinal cross-sectional view of a plurality of members that have been bonded together, FIG. fjrJ2 is a longitudinal cross-sectional view of the plurality of members shown in FIG. FIG. 3 is a longitudinal cross-sectional view of the member. Figure 4 shows conventional adhesion 8! A cross-sectional view of the mat is shown. Figure 1

Claims (1)

[Claims] An electromagnetic induction adhesive that is melted by electromagnetic force is inserted into each adhesion compatible surface of the plurality of members, and high-frequency magnetic lines of force are applied to the electromagnetic induction adhesive to generate fluidity, and the plurality of members are pressurized to create fluidity. 1. A method for bonding multiple members using an electromagnetic induction adhesive, characterized in that a portion of the electromagnetic induction adhesive flows into gaps between the multiple members.