JPH0584832A - Method of cross-joining synthetic resin board material - Google Patents

Abstract

PURPOSE:To improve efficiency and finish the outer appearance of joint parts beautifully not to be remarkable by simplifying a positional operation of beard materials to be joined mutually in the case of joining comparatively thick synthetic resin board materials such as artificial marble into a intersection of an orthogonal state or the like. CONSTITUTION:On one surface of a first board material 1, a caul 5 is secured at the inward position of a predetermined distance from the end surface thereof and, by the use of the caul 5 as a positioning ruler, a second board material 2 is arranged. In this arranged state, the end periphery of the first board material 1 is so placed that it projects slightly outward of the end periphery of the second board material 2, and the adhesive agent pushed out from the joint- interstice during the period of joining is received on the projection part P so as to prevent an adhesive agent from flowing down. In the next place, while both board materials are pressed by means of a clamper or the like, the adhesive agent is cured, and then the projection part P of the first board material 1 is cut-removed in conjunction with the pushed out part of the adhesive agent 4a so that they arc finished to be flush with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cross-joining synthetic resin plate materials, and particularly to a relatively thick synthetic resin plate material such as acrylic artificial marble, one end of one plate material being connected to the other end of the other. The present invention relates to a joining method in the case where end faces of plate materials are brought into contact with each other and joined into an L shape or the like.

[0002]

2. Description of the Related Art In the case of manufacturing a top plate of furniture, for example, using artificial marble, in order to increase the apparent thickness of the top plate, a first plate member (as shown in FIG. The narrow plate-shaped second plate material (2) forming the front hanging portion is joined to the edge of (1) in an intersecting state, and the end surface of the first plate material (1) and the outer surface of the second plate material (2) are flush with each other. There are cases where a joint type that requires finishing is required.

Conventionally, as one method for performing the above-mentioned joining, as shown in FIG. 5, as shown in FIG.
The first plate member (11) is placed horizontally on top of the first plate member (11), and the second plate member (12) is accurately positioned and erected on the edge of the first plate member (11) via the adhesive (14). The adhesive is cured while pressing both plate materials (11) and (12) with 15), and then the protruding portion (14a) of the adhesive (14).
A method of polishing and removing (14b) has been adopted.

However, in the case of the above-mentioned method, the positioning work for arranging the outer surface of the second plate member (12) and the end face of the first plate member (11) in exactly the same plane is troublesome, and the accurate positioning is required. Also, when the clamper (15) is tightened, the position is likely to be displaced again, and the protruding portion (14a) of the adhesive (14) hangs down on the outside of the joint, resulting in insufficient adhesive on the outside of the joint. The so-called "maze" phenomenon is caused, and the joint tends to have a linear appearance. Further, the protruding portion (14b) of the adhesive is accumulated inside the joint to form a bead shape. There are problems such as difficulty in removal.

As a method for eliminating or mitigating such a problem, the following joining method has been conventionally recommended and adopted.

That is, as shown in FIG. 6, the first plate member (11)
In order to prevent the positional deviation between the second plate member (12) and the second plate member (12), they are preliminarily fixed inside the joint with an aluminum adhesive tape (16), and in order to prevent the adhesive from dripping,
An aluminum adhesive tape (17) is attached to the end surface of the plate material (11) in an upwardly protruding state to form an adhesive reservoir (17a). Then, after inclining the second plate material (12) and injecting the adhesive (14) into the joint portion, as shown in FIG.
As shown in (2), the second plate material (12) is stood upright and clamped by the clamper (15) to cure the adhesive (14).
After that, the aluminum adhesive tapes (16) and (17) are removed, and the protruding portion (14a) of the adhesive accumulated in the adhesive reservoir (17a) is removed by polishing.

This method is effective for preventing the positional displacement of the plate materials (11), (12), and preventing "blurring" of the joint portion due to excessive drooping of the adhesive, and solves the above-mentioned problems. Although it is possible, the second plate (1) with respect to the first plate (11)
Since it is necessary to perform temporary fixing with the adhesive tape (16) while properly holding the position of 2), this temporary fixing work requires a lot of labor and time, and not only the work efficiency is poor, but also the aluminum adhesive tape. There was a disadvantage that the cost demerit due to the consumption of was large.

Therefore, an object of the present invention is to provide a method for cross-joining synthetic resin plates which can solve these problems.

[0009]

According to the present invention, the first plate member is so arranged that the end surface of the first plate member and the outer surface of the second plate member are flush with each other.
In a method of joining both plate materials by bringing one end surface of the plate material into contact with one end surface of the second plate material, a contact plate is provided on one surface of the first plate material, and the end surface is a plate of the second plate material from the end surface of the first plate material. Place and fix so that they are located at a distance slightly larger than the thickness,
Then, the end surface of the patch plate is used as a reference ruler for positioning, and the second plate member is placed in contact with the end edge portion of the first plate member with an adhesive, and the first and second plate members are clamped. After the adhesive is hardened and bonded while being pressed with, the protruding portion of the edge of the first plate material is cut and removed together with the protruding portion of the adhesive, so that the end surface of the first plate material and the outer surface of the second plate material. The gist is a method for cross-joining synthetic resin plates, which is characterized by finishing flush.

[0010]

Embodiments of the present invention will be described below with reference to FIGS.

The first and second plate materials (1) and (2) to be joined to each other are, for example, methyl methacrylate, which is known as artificial marble, aluminum hydroxide,
It is made of a resin composition in which an inorganic powder filler such as magnesium hydroxide is dispersedly contained, and is generally formed to have a thickness of about 10 to 15 mm. In the case of the above-mentioned artificial marble, the adhesive (4) used for joining them is generally a mixed solution of methyl methacrylate and an amine accelerator, and an organic perferate solution as a composition for polymerization and curing. It consists of and and is used as a mixture just before use.

When joining the two plate materials (1) and (2), first, the first plate material (1) is placed horizontally on a surface plate work table (3) as shown in FIG. A backing plate (5) used as a positioning ruler is overlaid on the upper surface and fixed. The backing plate (5) uses the end surface (5a) as a positioning ruler. Therefore, the material is not particularly limited as long as the end surface is finished straight. It is preferable to use plywood for reasons such as cost and convenience in handling.

Fixing of the backing plate (5) can be easily carried out by partially adhering it to the surface of the first plate (1) using, for example, an instant adhesive.

At the time of this fixing, the end surface (5a) of the backing plate (5) is a predetermined distance (d) from the end surface of the first plate member (1).
Set to a position separated by. And this predetermined distance (d) is
The distance is set to be slightly larger than the plate thickness (t) of the second plate member (2), preferably t + 2 to 3 mm. If this distance is too small, it is difficult to realize the effect of the present invention, and if it is too large, the cutting allowance of the first plate material (1) becomes large, and the waste of material increases.

The preparatory work is completed by attaching the above-mentioned backing plate (5), and subsequently, the adhesive (4) is applied on the edge of the first plate (1), and then the second plate (2) is arranged. To do. At this time, the end face (5a) of the backing plate (5) is used as a positioning ruler, and one end of the second plate member (2) is placed along the end face of the first plate member (1). Press on the edge. As a result, a protrusion (P) having a width (S) of 2 to 3 mm is formed on the outer edge of the second plate (2) on the edge of the first plate (1). Therefore, the adhesive (4a) protruding to the outside from the joint between the plate materials (1) and (2) is
It is prevented from accumulating on the protruding portion (P) and flowing down downward. As a result, it is possible to prevent the formation of linear concave marks due to the "waste" of the adhesive at the joint. On the other hand, the inflow of the adhesive (4) to the inside of the joint is almost prevented by the presence of the contact plate (5), and no bead-shaped protruding portion is formed in the portion.

Therefore, as shown in FIG. 2, a clamper (6) is used to fasten both plate members (1) and (2) at a plurality of positions at predetermined intervals in the longitudinal direction of the second plate member (2).
The adhesive (4) is cured by leaving it for a predetermined time while maintaining this clamping pressure state. In the above tightening, if excessive pressure is applied, a large amount of adhesive will flow out from the joint,
It is important to be careful not to overtighten, as this may lead to a decrease in bonding strength due to insufficient adhesive.

When the adhesive (4) is completely hardened, the clamper (6) is removed, and if necessary, the first plate material (1) is turned upside down, and as shown in FIG. 3, a cutting tool (7) such as a router.
The protrusion (P) of the first plate material (1) is removed by cutting together with the protruding portion (4a) of the adhesive by using, and the end surface of the first plate material (1) is replaced with the outer surface of the second plate material (2). Make it flush. The cutting tool (7) uses a rotary cutting tool (7a) having a cutting blade on its peripheral surface, which is called a straight bit, and a guide roller (7b) is attached to the tip thereof so that the guide roller (7b) moves to the second position. By rolling along the outer surface of the plate material (2) and moving in the cutting direction,
The above-mentioned flush cutting can be easily performed. After cutting
It goes without saying that the joint is beautifully finished by performing final polishing with sandpaper or the like.

By the joining process as described above, as shown in FIG. 4, the second plate member (2) is formed at right angles to the edge of the first plate member (1).
Can be joined, and the joined portion can be barely visible.

Although the above embodiment shows the case where the first and second plate members are joined at a right angle, the present invention similarly applies to the case where the second plate member is joined obliquely to the first plate member. It is applicable.

[0020]

According to the present invention, since the second plate member can be arranged by utilizing the backing plate previously fixed on the first plate member as the positioning ruler, the work can be facilitated and the clamper or the like can be used. Even when tightened, the backing plate plays a role of preventing the displacement of the second plate member, so that the second plate member can be easily joined and fixed to the first plate member at the correct setting position. Moreover, at the time of joining, the protruding portion of the edge of the first plate member functions as an adhesive agent receiver and prevents the adhesive agent from dripping. Therefore, there is no occurrence of linear concave marks due to the adhesive “waste” especially at the outer appearance of the joint, and after the adhesive is adhered, the protruding portion of the adhesive is cut and removed to remove the appearance of the joint. You can achieve a beautiful finish that is hardly noticeable.

As described above, according to the present invention, it is possible to perform cross-joining of plate materials efficiently by a simple operation in a short time and without using any special consumable material, and at the same time, the joint portion is visually noticeable. It has the advantage that it can be finished in a beautiful condition.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a second plate member is arranged with respect to a first plate member.

FIG. 2 is a cross-sectional view showing a state at the time of fastening and joining the first and second plate materials.

FIG. 3 is a cross-sectional view showing a state at the time of cutting the protruding portion of the first plate material.

FIG. 4 is a perspective view showing a state after joining.

FIG. 5 is a cross-sectional view showing a conventional plate material joining method.

FIG. 6 is a cross-sectional view showing another example of a conventional plate material joining method.

7 is a cross-sectional view showing a state at the time of joining by the joining method of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... 1st plate material 2 ... 2nd plate material 3 ... Working table 4 ... Adhesive 4a ... Adhesive protrusion part 5 ... Patch plate P ... Projection part

Claims (1)

[Claims] 1. An end surface of a first plate member and an outer surface of a second plate member are flush with each other so that the end face of the second plate member is brought into contact with one surface of an end edge portion of the first plate member to join the two plate members. In the method, a patch plate is arranged and fixed on one surface of the first plate member such that its end surface is located at a distance slightly larger than the plate thickness of the second plate member from the end surface of the first plate member. The second plate member is abutted on the end edge portion of the first plate member through an adhesive by using the end face of the plate as a reference ruler for positioning, and the first and second plate members are clamped by a clamper or the like. After the adhesive is cured and joined, the protruding portion of the edge of the first plate material is cut and removed together with the protruding portion of the adhesive to remove the end surface of the first plate material into the second surface.
A cross-bonding method for synthetic resin plate materials, characterized by finishing flush with the outer surface of the plate material.