JPH0239918A - Bonding method for respective components - Google Patents

Abstract

PURPOSE:To save labor required for mixing and bond securely a mounting component to be mounted on a mounting component by relatively moving by means of revolution or repeated sliding of a component to be mounted and a mounting component at least on one side mechanically and mixing a two-pack type bonding prime agent and a curing agent applied to respective bonding surfaces. CONSTITUTION:For instance, in case respective components 1 and 2 formed with thermoplastic synthetic resin are bonded with a two-pack bonding agent, a prime agent 3a and a curing agent 3b are applied to the bonding surfaces of respective components 1 and 2, and then the prime agent 3a and the curing agent 3b are mixed quickly by pressing the mounting component 2 to a recessed section 4 provided on the given position of the component 1 to be mounted by means of a spin jig 10 and revolving the mounting component 2 at high speed to keep itself in the given position. The mounting component 2 is stopped revolving after mixing properly to cure the bonding agent 3, and the mounting component 2 is fixed firmly to the component 1 to be mounted. In that case, when an adding type is used as the bonding agent 3, the curing time of the bonding agent 3 can be shortened by friction heat generated following the revolution of the mounting component 2.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for joining members together that can be applied to joining various members to be attached and attachment members to each other using a two-component adhesive.

2. Description of the Related Art In general, it is widely practiced to bond various members together using a two-component adhesive.

Conventionally, for this bonding, the main ingredient and curing agent of a two-component adhesive were mixed in advance on a saucer, etc., and then applied to either one side of the member to be attached or the member to be attached, or a two-component adhesive was applied to the joining surface of either side. After sequentially applying the main agent and curing agent of the liquid adhesive and mixing them with each other, the adhesive is cured by pressing the other side member against the bonding surface to which the adhesive has been applied, and the mounting member is attached. It is usually fixed to the member to which it is attached.

Problems to be Solved by the Invention However, with this method, it takes time and effort to mix the main ingredient of the two-component adhesive and the curing agent, and after mixing, the other side member can be quickly attached to the joint surface to which the adhesive has been applied. The reality is that it is not suitable for practical use from an industrial point of view because it has to be pressed against the surface.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for joining members together, which eliminates the time and effort required for mixing two-component adhesives, and which can reliably bond an attaching member to an attached member.

Means for Solving the Problems In the method for joining members to each other according to the present invention, a base agent and a curing agent of a two-component adhesive are separately applied to each joint surface of the member to be attached and the member to be attached. The mounting member is placed at a predetermined position and the joint surfaces are pressed against each other and moved relatively within a predetermined range to mix the base resin and curing agent, and then the relative movement of the mounting member and the mounting member is performed. The adhesive is cured by stopping the workpiece, and at least one side of the attached member or attachment member can be rotated to mix the base agent and the curing agent, or at least one side of the attached member or attachment member can be rotated. It is also possible to mix the base agent and the curing agent by repeated sliding. In addition, by using an additive type adhesive, the adhesive can be cured in a short time by the frictional heat generated by the relative movement between the attached member and the attached member. is made of thermoplastic synthetic resin, and in addition to bonding with an adhesive, it is also possible to weld and bond the mounted member and the mounting member using frictional heat generated due to relative movement.

Function: In this method of joining members together, the member to be attached and the member to be attached are mechanically moved relative to each other by rotation or repeated sliding on at least one side, and a two-component adhesive is applied separately to each joint surface. Since the base resin and curing agent can be mixed, not only can the adhesive be mixed without much effort, but also the mounting member can be assembled by simply curing the adhesive by stopping the relative movement after properly mixing the adhesive. It can be securely fixed to the attached member. In addition, if an additive type adhesive is used, the adhesive can be cured in a short time by the frictional heat generated by the relative movement between the attached member and the attached member, reducing the curing time of the adhesive. When the members and mounting members are made of thermoplastic synthetic resin, the joining strength can be further increased by welding joining in addition to adhesive joining.

Embodiments will now be described with reference to the accompanying drawings.

In this joining method, the member to be attached 1 and the member to be attached 2 are bonded using an ordinary adhesive that has a relatively high adhesive strength, such as a thermoplastic or thermosetting synthetic resin molded product, an aluminum die-cast product, or a metal plate such as stainless steel. It can be widely applied in the case of constructing parts, among which, based on the illustrated embodiment, members formed of thermoplastic synthetic resin are mutually connected! , 2 will be explained using a two-component adhesive.

As shown in FIG. 1, each member 1.2 is coated with a base agent and a curing agent of a two-component adhesive separately on each joint surface. For example, when applying the base agent 3a of the two-component adhesive to the joint surface of the attachment member 1, the hardening agent 3b may be applied to the joint surface of the attachment member 2. In the case shown in FIG. 1, a recess 4 is provided at a predetermined position on the plane of a plate-shaped member to be attached 1, and a substantially disc-shaped attachment member 2 is fitted into this recess 4 and joined. Among these two-component adhesives, there are condensation type adhesives such as epoxy and urethane adhesives that increase the curing speed when the amount of reaction initiator is increased, and slow down when the amount of reaction initiator is decreased. It hardens even at room temperature, but 5
There are additive types, such as acrylic type, which rapidly accelerate the curing reaction when heated within the temperature range of 0 to 150°C, and it is preferable to use additive types. Further, the curing agent is for curing a main agent such as a reaction initiator or a reaction accelerator, and by mixing either or both of these with the main agent, the main agent can be cured and bonding can be achieved.

After applying the main agent 3a and hardening agent 3b to the joint surfaces of the members 1 and 2, the mounting member 2 is placed in the recess 4 provided at a predetermined position of the member 1 to be mounted using the spin jig 10, as shown in FIG. If the mounting member 2 is rotated at a high speed while being pressed against the mounting member 2 at a predetermined position, the base resin 3a and the curing agent 3b can be mixed quickly. If the rotation of the attachment member 20 is stopped after the main agent 3a and the curing agent 3b are appropriately mixed by this rotation, the attachment member 2 can be firmly fixed to the member to be attached 1 by curing the adhesive 3 as it is. In this case, since the attachment member 2 is joined to the recess 4 of the member to be attached 1, it is preferable that the adhesive 3 does not protrude onto the outer surface. Further, by rotating the mounting member 2 at high speed and using an additive type adhesive 3, the curing time of the adhesive 3 can be shortened by the frictional heat generated as the mounting member 2 rotates. The frictional heat can melt each joint surface by forming the attached member 1 and the mounting member 2 from thermoplastic synthetic resin, so in addition to bonding with the adhesive 3, they can be welded to each other more firmly. You can do it like this.

It is desirable that the thermoplastic synthetic resin materials used for the attachment member 1 and attachment member 2 used at this time are compatible.

In addition, if the joint surface of the attached member 1 is formed as a flat surface as shown in FIG. By moving left and right at high speed within a predetermined range while pressing, the adhesive 3 can be cured by mixing the main ingredient and the curing agent. In this case as well, adhesive 3. By accelerating the curing reaction with frictional heat and melting the attached member 1 and the attachment member 2 with frictional heat, it is possible to shorten the curing time and join. Using the vibration welding jig 11, the mounting member 2 has a channel shape as shown in FIG. 4, and it can be applied to the case where the mounting member 2 is bonded into the groove of the mounted member 1 with the adhesive 3. can. Ultrasonic vibration can be applied to the vibration welding, and any other means can be applied as long as it is possible to mechanically move the attached member 1 and the attachment member 2 relative to each other.

When joining the members 1.2 to each other in this way, the attached member 1. The main component 3a and curing agent 3b of the two-component adhesive 3 are separately applied to each joint surface of the mounting member 2, and the components are mutually 1.
By making 2 face each other and mechanically moving them relative to each other, the main ingredient 3
By mixing a and the curing agent 3b, they can be fixed at the same time with the adhesive 3, so the members 1 and 2 can be quickly joined to each other without much effort. It is particularly preferred when joining members that are not compatible with each other, where strength cannot be obtained by welding alone, or when joining members that cannot be welded because one or both sides are made of thermosetting resin.

Effects of the Invention As described above, according to the method for joining members together according to the present invention, members can be reliably joined together without much effort using a two-component adhesive. By shortening the curing time, it is possible to join quickly, and in addition to joining using an adhesive, it is also possible to perform welding joining, thereby increasing the joining strength.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the process of applying adhesive to each other by the method according to the present invention, Fig. 2 is an explanatory diagram of the process of applying spin welding to each other by the same method, and Fig. 3 is an explanatory diagram of the process of applying adhesive to each other by the same method. FIG. 4 is an explanatory diagram showing a modification of the applied vibration welding process. 1: Mounted member, 2: Mounting member, 3: Two-component adhesive, 3
a: base agent, 3b = curing agent.

Claims (5)

[Claims] (1) Separately apply the main agent (3a) and curing agent (3b) of the two-component adhesive (3) to each joint surface of the attached member (1) and the mounting member (2), and After mixing the base material (3a) and the curing agent (3b) by positioning the mounting member (2) at the predetermined position in step 1) and moving the attachment member (2) relatively within a predetermined range while pressing their joint surfaces against each other, The adhesive (3) stops the relative movement of the attached member (1) and the attachment member (2).
1. A method for joining members together, characterized in that the material is hardened. (2) At least one side of the attached member (1) or attachment member (2) is rotated so that the base resin (3a) and the curing agent (3b)
2. The joining method according to claim 1, wherein: (3) At least one side of the mounted member (1) or the mounting member (2) is slid repeatedly so that the base resin (3a) and the curing agent (
3b) The method of joining according to claim 1, wherein: (4) Using an additive type adhesive as the adhesive (3), the adhesive (3) is cured in a short time by the frictional heat generated by the relative movement between the attached member (1) and the attachment member (2). 4. The joining method according to claim 1, characterized in that: (5) The above-mentioned member to be attached (1) and attachment member (2) are formed of thermoplastic synthetic resin, and in addition to bonding with adhesive (3), the member to be attached (1) and the attachment member (2) are 5. The joining method according to claim 4, wherein the joining is performed by welding using frictional heat generated due to movement.