JPS61236877A - Production of box - Google Patents

Abstract

PURPOSE:To enable the efficient bonding and assembling of a box at a low cost even if the space to be bonded is narrow, by boring a through-hole to the side edge of a panel plate to be bonded and fixed to the side edge of the main body of a box and charging an adhesive between the joining faces through the above through-hole. CONSTITUTION:For example, the side edge 4a of the front panel 4 is made to contact with the back surface of the side edge flange 2a of the exterior cabinet 2 of the refrigerator 1 and is fixed to the box with an adhesive 10. A cavity 11 is formed to the side edge 4a of the front panel 4 and a through- hole 12 for the introduction of the adhesive is bored to the bottom part of the side edge 4a. The side edge 4a of the panel 4 is aligned opposite to the joining face of the side edge flange 2a of the exterior cabinet 2, and the adhesive 10 is charged into the space between the joining faces from the back side of the panel plate 4 through the through-hole 12 using an adhesive-application nozzle 14. Both members 2, 4 are bonded and fixed by this process.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a box body suitable for use when bonding and fixing panel boards, etc. to the side edges of various types of box bodies using an adhesive. .

[Conventional technology]

For example, in a Nidoor type refrigerator, a structure is adopted in which both ends of a front panel plate of an inner partition section are bonded and fixed to the edge of an outer box serving as a segment main body. Conventionally, screwing, riveting, spot welding, or the like has been generally employed as a method for joining such steel plate members together.

[Problem that the invention seeks to solve]

However, such conventional bonding methods.

In either case, the joining work is troublesome and complicated, and in screws and rivets, the number of parts is large and the cost is high.Furthermore, the screw heads are exposed outside the box, and the There are drawbacks such as problems with the design of the box, and there is also the drawback that depending on the structure of the box, it may not be possible to obtain the required sufficient structural strength. On the other hand, in joining methods such as spot welding, if there is a paint film on the welded part, it requires the troublesome work of first peeling it off, welding, and then finishing it, which poses problems in terms of workability. In addition, direct traces of the above-mentioned peeled portions during welding, as well as welding distortions, remained on the painted surface, spoiling the appearance of the box and making it aesthetically undesirable. In order to solve this problem, an additional finishing step is required, resulting in an increase in manufacturing costs.

In particular, in recent years, coated steel plates have been used for the refrigerator outer box and inner partition front panel plates, etc., with the aim of omitting post-processes such as painting and reducing costs. When welding, it is necessary to remove the paint film and apply a finishing coat, which is a big problem in practical use.

For this reason, it has been considered that the joint portion where the panel boards are overlapped and joined to the box body described above is fixed with adhesive, but during this joining, there is no need to apply adhesive to one or both joint surfaces. This causes problems such as the adhesive being scraped off and sticking to areas other than those required for adhesion, and this problem is especially serious when the area to be bonded is narrow. Met. In addition, the joining work, including the work of applying adhesive to the joining surfaces as described above, is troublesome and complicated, and it is difficult to automatically assemble it. It is necessary to take the following steps.

In view of the above-mentioned circumstances, the present invention makes it possible to easily and efficiently perform the joining work when joining and fixing a part of the panel board to the side edge surface of the box main body with an adhesive.
The object of the present invention is to obtain a method for manufacturing a box body that can automate the work of applying adhesive and the like.

・ [Means for solving the problem] In order to meet such demands, the method for manufacturing a box according to the present invention includes a method for manufacturing a box body, in which panels are overlapped on the side edges of a box body and bonded and fixed with an adhesive. A through hole for injection of adhesive is drilled in the side edge of the plate, passing from the back side to the joint surface side.
The side edges of this panel board are aligned with the side edge joint surfaces of the box main body and placed facing each other, and adhesive is injected between these rejoined surfaces through the through hole to adhesively fix both members. It was designed to do so.

[Effect]

According to the present invention, when joining the box main body and the panel board, the adhesive is injected later using the through holes on the panel board side, so that even if the adhesive is to be Even in narrow spaces, efficient adhesive fixing work can be carried out extremely easily and appropriately.

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail using embodiments shown in the drawings.

Figures 1 to 4 show an embodiment of the method for manufacturing a box according to the present invention. A case where it is applied to a joint part of plates will be explained.

First, the refrigerator box body, which is generally designated by the reference numeral 1, will be briefly explained using FIG. It consists of an inner box 3 arranged at intervals, and a front panel plate 4 of the middle partition part that partitions the upper and lower two chambers formed by the inner box 3. As shown in FIG. 2, a foamable heat insulating material 5 such as polyurethane foam is filled and foamed in between, and the outer box 2 and inner box 3 are integrated. It is structured like this. As is well known, the above-mentioned inner partition front panel plate 4 is attached with the hinges of the doors (not shown) for opening and closing each storage compartment, and also with the magnetic gaskets containing rubber magnets etc. for these doors. It is formed of a steel plate material or the like so as to attract a suction surface (not shown).

Now, according to the present invention, the side edge 4 of the front panel plate 4 is
As is clear from FIGS. 1 to 3, in stacking the panels 11 and 11 and fixing them together with the adhesive 10, a recess 11 is provided at the side end 4a of the front panel board 4, and a recess 11 is formed at the bottom of this recess 11 on the back side. A through hole 12 for injecting adhesive is bored from the side to the joining surface side, and the side end 4a of this panel board 4 is aligned and opposed to the joining surface of the side edge flange 2a of the outer box 2. At the same time, the through hole 1 is formed between these rejoining surfaces.
2, the adhesive lO is injected from the back side of the panel board 4 using the adhesive injection nozzle 14.

The feature is that both members (2, 4) are fixed by adhesive.

To explain this in detail, the side end portion 4a of the front panel plate 4 is formed such that the portion overlapped with the side edge flange 2a of the outer box 2 wraps around to the back side of the side end portion 4b via the bent portion 4b. The curved edge 2b of the side edge flange 2a of the outer box 2 is in contact with the front surface side portion of the bent portion 4b of the front channel plate 4. Note that the side edge flange 2a described above is a double flange that is folded back inward via its end edge 2b,
In addition, the tip side of the back plate 2C constituting this double flange is bent into a substantially U-shape inside the outer box 2, and the inner flange 2d and the back side of the side end 4a of the front panel plate 4 are bent. 1. Although the structure is such that the flange 3a of the inner box 3 is temporarily fixed during filling with the foamable heat insulating material 5, it goes without saying that the present invention is not limited to such a structure. Here, reference numeral 14 in the figure is a through hole that faces the adhesive injection through hole 12 on the panel board 4 side, which is bored in the inner flange 2d described above.

In the above-described configuration, when bonding the side edge 4a of the front panel plate 4 to the back side of the side edge flange 2a of the outer box 2, as shown in FIG. After inserting and setting the side end portion 4a in correspondence with the side edge flange 2a of the outer box 2, insert the adhesive injection nozzle 13 from the blue side of the box body 1 into the through hole 14 of the inner flange 4d and then into the panel board. These through holes 1
2.14, the adhesive 10 may be injected into the space between the joint surfaces to fill it. That is, the adhesive 10 filled between the rejoined surfaces in this manner flows in such a way as to permeate between the rejoined surfaces, thereby uniformly adhering the rejoined surfaces. Of course, in this case, as shown in this embodiment, by bringing the edge 2b of the side edge flange 2a into close contact with the front panel plate 4, the adhesive 10 can be absorbed from between the joint surfaces. It is possible to easily and appropriately prevent leakage to the body surface side.

It is obvious that after the above-described bonding work is completed, the flange 3a of the inner box 3 is assembled and the foamed heat insulating material 5 is filled, thereby completing the molding of the box 1.

Therefore, by employing the above-described configuration, both members (2, 4 ) can be performed extremely easily and appropriately injecting the adhesive for fixing the parts. In addition, with such a configuration, the adhesive injection work can be automated using robots, etc., and the work efficiency can be greatly improved, and even if the place to be glued is narrow, it can be done efficiently. This has advantages such as being able to perform adhesive fixing work. moreover,
In the above-mentioned configuration, since the adhesive 10 is injected in the assembled state, these two members can be neatly and reliably adhered and fixed without causing problems such as the adhesive 10 adhering to areas other than the necessary parts. be able to. Note that the above-mentioned leakage of the adhesive 10 from the vertical direction of the side end portion 4a of the front panel board 4 occurs because this portion is located inside the box l, as is clear from FIG. There is no practical problem.

According to the present invention, which has such advantages, it is possible to exhibit the effects in terms of, for example, no post-processing is required when the outer box 2, front panel plate 4, etc. are formed of painted steel plates. However, it is of course not limited to such coated steel plates, and similar effects can be achieved even if the present invention is employed in areas where general steel plates are bonded and fixed together.

Here, as the above-mentioned adhesive 10, for example, a two-component urethane adhesive used by mixing and reacting isocyanate and polyol is used, for example, when bonding painted steel plates together, the reliability of the adhesive strength etc. Although it is preferable from the viewpoint of sex, it is clear that it is not necessarily limited to this. In addition, when using the above-mentioned two-component urethane adhesive, it is conceivable to cure it by induction heating, etc. in order to shorten the bonding time, but it is of course not limited to this, and other forced adhesives may be used. heating method,
The adhesive may be cured by natural drying or the like.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part may be modified and changed as appropriate. For example, in the embodiment described above, the side edge flange 2a
There is also a through hole 1 for adhesive injection in the inner flange 2d that is continuous with the inner flange 2d.
4 is provided, but this is not necessarily necessary.

Furthermore, in the above-mentioned embodiments, a case is explained in which the method for manufacturing a box according to the present invention is applied to the joint between the outer box 2 of the refrigerator box l and the partition front panel plate 4 that is joined to the outer box 2. However, the present invention is not limited thereto, and can be employed in a joint between a box and a panel board joined to the box in various devices and devices.

〔Effect of the invention〕

As explained above, according to the method for manufacturing a box according to the present invention, when the side edges of the panel board are superimposed on the back side of the side edge of the box body and bonded and fixed with adhesive, the panel board is A through hole for injecting adhesive is drilled from the back side of the side edge to the joint surface side, and the side edge of this panel plate is aligned and placed opposite to the side edge joint surface of the box main body. Since the adhesive is injected between these rejoining surfaces through the through hole, the adhesive injection work for bonding and fixing the two members is extremely simple and inexpensive, although it is a simple and inexpensive method. It can be done appropriately, and in particular, it can automate the adhesive injection work, greatly improving the work efficiency, and it can also perform efficient adhesive fixing work even in narrow places. It has various excellent effects such as:

[Brief explanation of drawings]

FIG. 1 is an enlarged cross-sectional view of a main part for explaining an embodiment of the method for manufacturing a box according to the present invention, FIG. 2 is an enlarged cross-sectional view of a main part of a box to which the present invention is applied, and FIG. The front view and FIG. 4 are schematic perspective views showing the external appearance of a refrigerator box to which the present invention is applied. l...refrigerator box, 2...outer box (box main body),
2a...Side edge flange, 2b...Fist edge, 2c
mφ/Φ back plate, 2d...fist/inner flange, 3...
Inner box, 4... Inner partition front panel board, 4a11+1
・・Side end, 10-・φ, adhesive, l 1111111
11 recess, 12.14---fist through hole, 13...adhesive injection nozzle.

Claims (1)

[Claims] In a box manufacturing method in which the side edges of a panel board are overlaid on the back side of the side edge of the box body and bonded and fixed with an adhesive, the adhesive penetrates from the back side of the side edge of the panel board to the joint surface side. A through hole for injection of the agent is bored, and the side edge of this panel plate is aligned and opposed to the side edge joint surface of the box main body, and the through hole is inserted between these two joint surfaces. A method for manufacturing a box, characterized by injecting an adhesive and bonding and fixing both members.