JPH06228507A - Method of jointing - Google Patents

Abstract

PURPOSE:To provide a method whereby the initial holding, exact positioning and jointing of the adherends can be easily accomplished. CONSTITUTION:An adhesive 16 which solidifies with the lapse of time and has a viscosity of 50000cP or below at the time of jointing is applied to the surfaces 15 of joints B1 and B2 of the object, each containing a magnet 14; the surfaces 15 to which the adhesive 16 is applied are abutted against the jointing surface 30 of, e.g. a steel sheet 3, temporarily jointed to the surface by the magnetic force; and the object 1 is positioned by sliding the surfaces 15 with the aid of the adhesive 16 applied to the jointing surface 30 as a lubricant, and jointed in place.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a joining method.

[0002]

2. Description of the Related Art As a conventional joining method, for example, in an automobile assembly line, as shown in FIG.
When the interior ceiling member 1c is joined to the ceiling iron plate 3c forming the vehicle interior ceiling wall of the automobile room 2c, two workers lift the ceiling member 1c by hand, or The operator lifts the head with his / her head to perform positioning, and the room lamp section 20c and the room mirror section 2
1c, a joining method of fixing at a predetermined position by mounting screws C screwed to a plurality of parts of the assist grip portion (not shown) is adopted.

[0003]

However, in the case of the above-mentioned conventional joining method, the ceiling member 1c for the interior of the automobile room 2c is used.
Has a large size, so while holding the state of being lifted upward, it is positioned at a predetermined position and the mounting screw C
As a result, it is difficult to fix the work at a predetermined position, and the time required for the work becomes long. In addition, since it is difficult to perform the work, if the ceiling member 1c is forcibly fixed without being positioned accurately, excessive stress is generated, and the ceiling member 1c may be broken or damaged. It may be a factor.

Therefore, in order to prevent the occurrence of the above problems,
As the ceiling member 1c, it is necessary to manufacture a ceiling member having a high bending strength in advance. However, since the strength is increased, the weight is increased and the weight cannot be reduced. Further, automation by a work robot apparatus can be considered in place of the above work by the worker, but it is difficult to automate the initial holding and accurate positioning of the ceiling member 1c and the tightening of the mounting screw C.

An object of the present invention is to provide an initial holding and accurate positioning of an object to be joined and fixed, such as the ceiling member, and a joining method which facilitates joining and fixing.

[0006]

According to the joining method of the present invention, the joining surface of the joining portion including the magnet of the object to be joined and fixed is solidified with the passage of time, and the viscosity at the joining is 50,000 cm poise or less. After applying the adhesive, the joining surface such as an iron plate is brought into contact with the joining surface to which the adhesive has been applied to temporarily join with magnetic force, and the adhesive applied onto the joining surface is used as a lubricant. By doing so, the joining surface is moved to position the object and join it at a predetermined position.

[0007]

The bonding method of the present invention is designed to bond objects to be bonded and fixed together.
The step of temporarily joining the surfaces to be joined such as an iron plate and the step of positioning and joining to a predetermined position after the step of temporarily joining are sequentially performed. That is, in the step of temporarily joining the objects, first, an adhesive having a viscosity of 50,000 cm poise or less that is solidified over time is applied to the joining surface of the joining portion including the magnets of the objects. Then, the joint surface of the object is brought into contact with the surface to be joined such as an iron plate via the adhesive before being solidified and temporarily joined by the magnetic force of the magnet.

In the step of positioning and joining at a predetermined position, the object in the temporary joining state is moved and positioned. At this time, by using the adhesive before solidification applied to the joint surface of the object as a lubricant, the object smoothly moves in the surface direction on the joint surface and can be positioned quickly,
It can be matched to a predetermined position. After that, the object is firmly bonded to a predetermined position as the adhesive solidifies over time.

[0009]

【Example】

(Embodiment 1) In the joining method of the present embodiment 1, a ceiling member 1 for interior of an automobile compartment 2 as an object to be joined and fixed in an automobile assembly line based on FIGS. Description will be given by applying it to the case where it is joined to the ceiling iron plate 3 forming a wall.

Prior to the joining method of Example 1, the ceiling member 1
The ceiling iron plate 3 will be described. As shown in FIG. 1, the ceiling member 1 is a base material (made of glass fiber and polyolefin fiber) 1a which is formed in a shape suitable for the automobile compartment 2 in advance and is arranged on the side of the automobile compartment 2 facing the ceiling iron plate 3. And a design skin 1b which is integrally laminated on the base material 1a and has a design surface exposed to the automobile compartment 2 side.

The ceiling member 1 has a hole 10 for inserting a room lamp component 20 mounted on a ceiling iron plate 3 of an automobile compartment 2 and various interior mounting components (not shown), a recess or a notch 11, and the like. On the upper surface 12 of the member 1 facing the ceiling iron plate 3, a substantially rectangular parallelepiped is formed in a region b1 and a region b2 corresponding to the joined surface 30 of the region A1 near the front side and the region A2 near the rear side of the ceiling iron plate 3. Joints B1 and B2 are formed in which a foamed resin 13 (thickness: 15 mm, length: 300 mm, width: 100 mm) and a metal plate magnet 14 are sequentially and integrally laminated.

The foamed resin 13 can function as a gap adjusting member by setting its thickness variously according to the purpose. That is, the presence of the foamed resin 13 having a predetermined thickness between the ceiling member 1 and the ceiling iron plate 3 accommodates a wire harness (not shown) or reinforces the strength of the ceiling member 1 and the ceiling iron plate 3. A space 32 (see FIG. 1) for accommodating a lean force (not shown) can be formed. As the foamed resin 13, polyethylene foam, urethane foam or the like can be used.

The surface of the plate-shaped magnet 14 serves as a joining surface 15 to be joined to the joined surface 30 of the ceiling iron plate 3. Further, instead of the plate magnet 14, a plate rubber magnet can be used. The ceiling iron plate 3 forms a ceiling wall in the automobile compartment 2, and joins the joints B1 and B2 of the ceiling member 1 to the jointed surface 30 facing the upper surface 12 of the ceiling member 1, and a base portion for fixing and holding the joints. Becomes A windshield 31 is attached to the front end of the ceiling iron plate 3.

In the joining method of the first embodiment, the step of temporarily joining the ceiling member 1 to the ceiling iron plate 3 of the automobile room 2, and the ceiling member 1
And the step of positioning them at the regular joining position are sequentially performed. Then, in the step of temporarily adhering, first, the joining surfaces 15 of the plate-like magnets 14 of the respective joining portions B1 and B2 of the ceiling member 1 are solidified with the passage of time, and the viscosity at the time of joining is 50,000 cm poise or less. An adhesive (water-based emulsion type or urethane-based water-curable type) 16 is applied.
The reason for setting the viscosity value of the adhesive 16 to 50,000 cm poise or less is that the initial adhesive force is weak and two objects can be relatively moved in the plane direction at the time of relative movement. Acting as a lubricant,
This is because it has a physical property that it solidifies with the passage of time to increase the adhesive force and can firmly bond two objects. The adhesive 16 is not limited to the above (water-based emulsion type or urethane-based water-curable type), and an adhesive having a low initial adhesive force such as a two-component epoxy adhesive may be used. it can.

Next, the ceiling member 1 is brought close to the ceiling iron plate 3 with its upper surface 12 facing by the work of one worker or a robot device.
The bonding surface 15 of each plate-shaped magnet 14 to which the adhesive agent 16 before solidification is applied is defined as the bonding target area A1 of the ceiling iron plate 3,
The surfaces to be joined 30 of A2 are brought into contact with each other. Then, the ceiling member 1 is temporarily bonded to each bonded surface 30 of the ceiling iron plate 3 via the adhesive 16 by the magnetic force of the plate magnet 14.

After that, in the step of positioning and joining, the ceiling member 1 in the state of being temporarily joined by the magnetic force of the plate magnet 14 is joined to the joining surface 15 of the plate magnet 14 and the ceiling iron plate 3.
The adhesive 16 before solidification, which is interposed between the bonded surface 30 and the part to be bonded, is used as a lubricant, and is moved on the bonding surface 15 and the positioning is adjusted to match the regular fixing position. After that, if the adhesive 16 is left for a predetermined time, the adhesive 16 solidifies with the lapse of time.
It is firmly joined to the ceiling iron plate 2 by the acting force of 6, and is fixedly held.

In the first embodiment, the case where the ceiling iron plate 3 and the ceiling member 1 are joined at two joining regions has been described, but the present invention is not limited to this, and the joining region may be one place or three places. It may be more than one place. According to the joining method of the first embodiment, the ceiling member 1 for the interior of the automobile room 2 is joined to the joined surface 3 of the ceiling iron plate 3 forming the ceiling wall of the automobile room 2.
In the case of joining to 0, it is possible to easily join by one worker or work such as a robot device, and it is not necessary to fix it with a mounting screw as in the conventional joining method, and automatic assembling is easy and the work cost is reduced. You can Further, since unnecessary stress is not applied to the ceiling member 1 at the time of joining, the bending strength can be small, the weight of the object can be reduced, and the product cost can be reduced.

(Embodiment 2) The joining method of Embodiment 2 is such that the foamed resin 13 and the plate-like magnet 14 are integrally and sequentially laminated on the upper surface 12 of the ceiling member 1 used in Embodiment 1 in order to form joints B1 and B2. It is the same as the case of the first embodiment, except that the joint B3 (see FIG. 3) formed only on the plate-shaped magnet 14 provided on the upper surface 12 of the ceiling member 1 is formed instead of forming.

In the joining method of Example 2, a space 32 (see FIG. 1) for accommodating a wire harness (not shown) and a lean force (not shown) for reinforcing the strength of the ceiling member 1 and the ceiling iron plate 3 (see FIG. 1). It is possible to set a place where it is not necessary to form the joint region. (Modification of Embodiment 2) The joining method of the modification of Embodiment 2 is
Instead of the bonded surface 30 of the ceiling iron plate 3 used in the first embodiment, the bonded surface 40 is the bottom surface of the lean force 4 that is preliminarily attached to the ceiling iron plate 3 and reinforces the strength of the ceiling member 1 and the ceiling iron plate 3. Other than that, the same as in the case of the second embodiment.

Therefore, in the case of this modified example, the lean force 4 can be utilized for joining the ceiling member 1, and the number of parts constituting the ceiling member 1 can be reduced.

[0021]

According to the joining method of the present invention, an object to be joined and fixed is solidified with time with respect to a surface to be joined such as an iron plate, and an adhesive having a joining viscosity of 50,000 cm poise or less is interposed. In this state, temporary joining is performed by the magnetic force of a magnet, and then the joining surface is moved by using the adhesive as a lubricant to position an object and join it to a predetermined position.

Therefore, the object can be easily temporarily fixed to the surfaces to be joined such as an iron plate, and can be reliably positioned at the proper adhesive fixing position, and these operations can be easily performed by one worker. You can Further, it is not necessary to fix the object with the mounting screw, and the automatic assembling is possible. Therefore,
The work cost can be reduced, and unnecessary stress is not applied at the time of joining, so bending strength can be reduced.
It is also advantageous in reducing the weight of the object and reducing the product cost.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a main part of a joining method according to a first embodiment.

FIG. 2 is a bottom view of the first embodiment as viewed from above the interior of an automobile.

FIG. 3 is a vertical sectional view showing a main part of a joining method according to a second embodiment.

FIG. 4 is a vertical cross-sectional view showing the main parts of a modified example of the second embodiment.

FIG. 5 is a vertical cross-sectional view showing a main part of a conventional joining method.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ceiling member B1, B2, B3 ... Joining part 13 ... Foam resin 14 ... Plate magnet 15 ... Joining surface
16 ... Adhesive 2 ... Car room 3 ... Ceiling iron plate 30 ... Joined surface

Claims (1)

[Claims] 1. A bonding surface of a bonding portion including a magnet of an object to be bonded and fixed, which is solidified over time, is coated with an adhesive having a viscosity of 50,000 cm poise or less at the time of bonding, and then coated on an iron plate or the like. The bonding surface coated with the adhesive is brought into contact with the bonding surface to temporarily bond with the magnetic force, and the bonding surface is moved by using the adhesive coated on the bonded surface as a lubricant. A joining method for positioning an object and joining it at a predetermined position.