JP3974827B2 - Door manufacturing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a door in which a surface panel is decorated with a metal line.
[0002]
[Prior art]
For example, Japanese Utility Model Publication No. 3-66388 discloses a door in which a decorative molding is fixed to a front panel. As shown in the perspective view of FIG. 1, the door described in this publication has a decorative groove 23 provided on the surface panel 21, and a decorative molding 22 is fixed thereto. The decorative molding 22 is formed by an extrusion mold material into a H-shaped cross section. The decorative molding 22 is bonded and fixed to the decorative groove 23. Further, in this door, in order to prevent the decorative molding 22 from coming off, the end of the decorative molding 22 is connected to the door by a molding end locking tool 24. The molding end locking tool 24 includes an upper pressing portion 24A that is inserted into the gap of the H-shaped decorative molding 22 and a lower pressing portion 24B that is inserted into the door body, and connects the upper pressing portion 24A to the decorative molding 22. It is connected to the door so that it will not come off.
[0003]
[Problems to be solved by the invention]
The door of FIG. 1 is connected to the door so that the molding end locking tool 24 is connected to the end of the decorative molding 22 and does not come off. This structure is restricted by the shape of the decorative molding because it is necessary to extend the decorative molding to the end of the door. For example, a decorative molding that does not extend to the end of the door cannot be firmly fixed to the door with this structure. Further, in this structure, since the H-shaped decorative molding is connected by the molding end locking tool, the decorative molding cannot be manufactured with a metal plate. This is because the metal plate is thin and cannot be processed into an H shape. Since the decoration mall decorates the door surface, even if it is thickened, it does not become a beautiful design. It is important to make the decorative mall as thin as possible in order to reduce manufacturing costs. No matter how thin the decoration mall is, the effect of beautifully decorating the door surface does not deteriorate at all. For this reason, it is important to fix the thin decorative molding firmly to the surface panel.
[0004]
However, it is very difficult to fix the thin decorative molding manufactured by cutting the metal plate firmly in the decorative groove of the surface panel so as not to come off. Since the thin metal plate decorative molding is easy to bend and deform, the portion bonded to the decorative groove may be peeled off and partially protrude from the decorative groove. In particular, when the temperature of the door becomes high, the decorative molding easily protrudes from the decorative groove. This is because the adhesive material softens or deteriorates, and the decorative molding may be deformed due to thermal expansion or the like. In addition, a decorative molding made of a thin metal plate can be manufactured at a low cost, but is easily deformed in the previous process of fitting into the decorative groove of the surface panel. The decorative molding deformed before insertion can be fixed to the decorative groove with an adhesive, but when the temperature rises, it may be restored to the original deformed shape and protrude from the decorative groove.
[0005]
In particular, in order to efficiently fix the decorative molding to the decorative groove, a door that uses double-sided adhesive tape to bond the decorative molding to the decorative groove will soften the double-sided adhesive tape when the temperature rises. The adhesive strength of the is reduced. For this reason, when temperature rises, there exists a fault which a decoration molding protrudes outside from a decoration groove.
[0006]
The present invention has been developed for the purpose of solving such drawbacks of conventional doors. An important object of the present invention is to provide a decorative molding that is made of a metal plate, a manufacturing method of the door that can be securely fixed so as not come off the decorative grooves in the surface panel.
[0007]
[Means for Solving the Problems]
The door manufactured by the method of the present invention includes a front panel 1 provided with a narrow decorative groove 3 by pressing a metal plate, and a decorative groove 3 of the front panel 1. A decorative molding 2 made of a metal plate having a color different from that of the front panel 1 is provided. In the decorative molding 2, both side surfaces fitted in the decorative groove 3 are oxide films and have a fine uneven surface. The front panel 1 is a metal plate in which a cushion layer 4 is laminated on the surface, and the cushion layer 4 is provided up to the interior of the decorative groove 3. This door has the decorative molding 2 inserted into the decorative groove 3 of the front panel 1 and the oxidized uneven surface 5 on both sides of the decorative molding 2 is brought into close contact with the cushion layer 4 of the front panel 1 so that the cushion layer 4 and the oxidized uneven surface are 5 prevents the decorative mall 2 from falling out.
[0008]
The decorative molding 2 can be any one of a stainless plate, an aluminum plate, and a Shinchu plate. The decorative molding 2 fitted in the decorative groove 3 can be positioned in the same plane as the front panel 1 or inside the decorative groove 3 than the front panel 1. The decorative groove 3 can be made wider than the depth by setting the width to 1 to 15 mm and the depth to 1 to 3 mm. The decorative molding 2 can be bonded to the bottom of the decorative groove 3 of the front panel 1 via the double-sided adhesive tape 6.
[0009]
Further, in the door manufacturing method of the present invention, a metal plate having a color different from that of the front panel 1 is cut into the decorative groove 3 of the front panel 1 provided with the narrow decorative groove 3 by pressing the metal plate. The decorative molding 2 is inserted, and the decorative molding 2 is bonded and fixed to the bottom surface of the decorative groove 3. In this manufacturing method, a metal plate is cut with an NC laser processing apparatus, and the decorative molding 2 is manufactured using oxide concavo-convex surfaces 5 which are oxide films on both sides and are fine concavo-convex surfaces. Further, with the NC turret punch press 10, a metal plate having the cushion layer 4 laminated on the surface is pressed to provide the decorative groove 3 so that the cushion layer 4 is provided even inside the decorative groove 3. Further, the decorative molding 2 is fitted into the decorative groove 3 and the decorative molding 2 is bonded and fixed to the decorative groove 3 so that the oxidized uneven surfaces 5 on both sides of the decorative molding 2 are in close contact with the cushion layer 4 of the front panel 1. Then, the decorative molding 2 is fixed by the cushion layer 4 and the oxidized uneven surface 5 so as not to come out into the decorative groove 3.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment described below exemplifies a door for embodying the technical idea of the present invention, and the present invention does not specify the door as described below.
[0011]
Further, in this specification, in order to facilitate understanding of the scope of claims, the numbers corresponding to the members shown in the embodiments are referred to as “claims” and “means for solving the problems”. It is added to the member shown by. However, the members shown in the claims are not limited to the members in the embodiments.
[0012]
The door shown in the front view of FIG. 2 has a decorative molding 2 fixed to the surface panel 1. The front panel 1 is provided with a narrow decorative groove 3 by pressing a metal plate at a portion where the decorative molding 2 is fixed. As shown in the partially enlarged sectional view of FIG. 3, the front panel 1 is a metal plate such as iron in which a cushion layer 4 is laminated on the surface. The surface panel 1 is suitably an iron plate having a thickness of 0.6 mm. However, a metal plate having a thickness of 0.5 to 0.8 mm can be used for the front panel 1. The front panel 1 has a periphery fixed to a door frame (not shown). The cushion layer 4 is a plastic film or a plastic coating film. The plastic film is a soft vinyl chloride film. However, a polyethylene film, a polypropylene film, etc. can be used for a plastic film. The plastic coating film is a resin coating film such as a urethane coating film or an acrylic coating film. The thickness of these cushion layers 4 is 0.01 to 0.3 mm. The cushion layer 4 is adhered to the entire surface of the front panel 1 so as to beautifully decorate the surface of the door and fix the decorative molding 2 so as not to come off.
[0013]
The front panel 1 is provided with a decorative groove 3 by pressing a portion for fixing the decorative molding 2. The door shown in the figure is curved to provide a decorative groove 3 in order to fix the curved decorative molding 2. Since the decorative groove 2 is inserted into the decorative groove 3, the width of the decorative groove 3 is substantially equal to the width of the decorative molding 2, for example, 5 mm. However, the width of the decorative groove 3 may be 1 to 15 mm. Further, the depth of the decorative groove 3 is set to a depth at which the decorative molding 2 is inserted and the decorative molding 2 is not protruded from the surface of the surface panel 1. For example, when a metal plate having a thickness of 1 mm is used for the decorative molding 2, the depth of the decorative groove 3 is about 1.5 mm. The reason why the decorative groove 3 is made deeper than the thickness of the decorative molding 2 is that a space for the adhesive and the double-sided adhesive tape 6 for adhering the decorative molding 2 is provided. Therefore, the decorative groove 3 has a depth obtained by adding the thickness of the decorative molding 2 to the thickness of the adhesive or the double-sided adhesive tape 6 for bonding the decorative groove 2. Preferably, the depth of the decorative groove 3 can be 1 to 3 mm. Since the decorative molding 2 obtained by cutting a metal plate is inserted into the decorative groove 3, the width of the decorative groove 3 is made larger than the depth. This is because if the width of the decorative groove 3 is narrower than the depth, the long decorative molding 2 is remarkably easily deformed.
[0014]
The metal plate to which the cushion layer 4 is bonded is pressed to produce the surface panel 1 having the decorative groove 3. The decorative groove 3 provided by pressing is provided with a cushion layer 4 on the entire inner surface. The decorative groove 3 is provided by pressing with an NC turret punch press 10. For pressing the decorative groove 3, a die 11 shown in the sectional view of FIG. 4 is used. The mold 11 includes an upper mold 11B having a recess 11b at a position where the decorative groove 3 is provided, and a lower mold 11A having a convex portion 11a at a position where the decorative groove 3 is provided. Between the concave portion 11b of the upper mold 11B and the convex portion 11a of the lower mold 11A, there is a gap that is bent with the front panel 1 interposed therebetween. In this mold 11, the front panel 1 is placed on the lower mold 11 </ b> A and fixed in place, the upper mold 11 </ b> B is lowered, and the decorative groove 3 is pressed on the front panel 1.
[0015]
As shown in the schematic sectional view of FIG. 5, the NC turret punch press 10 holds the upper turret 12 for setting the upper die 11B, the lower turret 13 for setting the lower die 11A, and the surface panel 1 in a horizontal posture. And a transfer means 15 that is controlled by a control mechanism incorporating a computer and transfers the front panel 1 at a predetermined pitch in the X-axis direction and the Y-axis direction. The NC turret punch press 10 presses the upper surface turret 12 with the upper turret 12 and the lower turret 13, and presses the surface panel 1 with the upper die 11B and the lower die 11A. The front panel 1 supplied to the upper surface of the table 14 is transported by a predetermined pitch in a horizontal posture with the edge held by the clamp 16 of the transport means 15. The pitch at which the transport means 15 transports the front panel 1 is set to an optimum value in consideration of the number of presses and the size of the mold 11, but is about 5 mm. However, the transfer pitch of the surface panel 1 can be 1 to 20 mm, preferably 3 to 10 mm, and optimally 4 to 6 mm.
[0016]
The mold 11 of the NC turret punch press 10 is shown in the perspective views of FIGS. 6 shows the lower mold 11A, and FIG. 7 shows the upper mold 11B. As shown in FIG. 6, the lower mold 11A has a convex portion 11a at the center of the upper surface. However, this figure shows a state in which the convex portion 11a protrudes in order to make the shape of the convex portion 11a easier to understand. Normally, as shown in FIG. 4, the lower mold 11 </ b> A is in a state where the upper and lower bases 17 outside the convex portion 11 a are pushed out by the elastic body 18 and are in the raised position, and the convex portion 11 a does not protrude. When the upper die 11B is lowered and pressed, the upper and lower platforms 17 are lowered and the convex portion 11a of the lower die 11A protrudes.
[0017]
The front panel 1 pressed by the mold 11 is pressed one after another while being transferred at a predetermined pitch in the direction in which the decorative groove 3 is formed as shown by the arrows in FIG. Is done. The NC turret punch press 10 transfers, for example, while pressing the surface panel 1 at a frequency of 2 to 4 times per second. Therefore, when the decorative groove 3 having a total length of 1500 mm is pressed, if the transfer pitch of the surface panel 1 is 5 mm and the punching frequency of the NC turret punch press 10 is 3 times per second, a total of 300 hits are obtained. It can be pressed in 2 minutes. However, the transfer pitch of the front panel 1, the punch frequency of the turret punch press 10 and the number of hits can be variously changed according to the overall length of the decorative groove 3. As described above, the NC turret punch press machine that performs press processing many times with a small pitch can be used to form the decorative groove 3 curved in various shapes without using a special mold specially designed. It has the feature that it can be pressed easily and at a low cost using a mold in a short time.
[0018]
The decorative molding 2 is manufactured by cutting a metal plate having a color different from that of the front panel 1. A stainless steel plate is used for the decorative molding 2. However, an aluminum plate or a shinchu plate can be used for the decorative molding 2. These metal plates have the feature that they can be cleaned over a long period of time because they do not rust easily. The decorative molding 2 is manufactured by cutting a metal plate into a width and shape that can be fitted into the decorative groove 3. In other words, the inner width of the decorative groove 3 and the width of the decorative molding 2 make it possible to fit the decorative molding 2 into the decorative groove 3 without a gap. In the decorative molding 2, a metal plate slightly thinner than the depth of the decorative groove 3, in other words, the depth of the decorative groove 3 is slightly deeper than the thickness of the decorative molding 2. The reason is that the decorative molding 2 fitted in the decorative groove 3 is positioned on the same plane as the front panel 1 or inside the decorative groove 3 than the front panel 1. This is because if the decorative molding 2 protrudes from the decorative groove 3, it cannot be used safely.
[0019]
As shown in a partially enlarged cross-sectional view of FIG. 3, the decorative molding 2 is formed of oxide films on both side surfaces that are fitted in the decorative groove 3 and has fine uneven surfaces. The reason why the decorative molding 2 has the oxidized uneven surface 5 on both sides thereof is that the decorative molding 2 is fitted into the decorative groove 3 so as not to come out, and the oxide film is used to prevent the side edges from being altered. By cutting the metal plate with a pulse laser, both sides of the decorative molding 2 can be oxidized uneven surfaces 5. Both side surfaces cut by the pulse laser are heated and melted by the laser to be oxidized, and fine irregularities melted by the pulse laser are formed. For this reason, the metal plate cut by the pulse laser is used as it is without being processed into a mirror surface, and is inserted into the decorative groove 3.
[0020]
An NC laser processing device is used to cut a metal plate with a pulse laser. The NC laser processing apparatus inputs a position for cutting a metal plate by software. The decorative molding 2 cut by the NC laser processing apparatus is inserted into the decorative groove 3 pressed by an NC turret punch press. As described above, both the NC laser processing apparatus and the NC turret punch press machine have a feature that they can be manufactured to substantially the same dimensions because the processing dimensions can be input by numerical control. Therefore, the decorative groove 3 and the decorative molding 2 manufactured by this method have the feature that their shapes are exactly matched and can be securely inserted. Further, there is a feature that it is not necessary to separately input the position of the decorative groove 3 and the shape of the decorative molding 2 and can be manufactured efficiently. The NC turret punch press machine and the NC laser processing apparatus perform processing so that the width of the decorative groove 3 and the width of the decorative molding 2 are the same. The decorative molding 2 is inserted into the decorative groove 3 so that the oxidized uneven surfaces 5 on both sides are in close contact with the cushion layer 4 of the front panel 1. For this reason, the cushion layer 4 and the oxidized uneven surface 5 are in close contact with each other, and the decorative molding 2 is reliably prevented from coming off from the decorative groove 3.
[0021]
The decorative molding 2 can also be manufactured by cutting a metal plate with an NC electric discharge machine, without using a pulse laser. A metal plate cut by electric discharge machining cannot have a rough surface on the cut surface as it is cut by a pulse laser. For this reason, the metal plate cut by electric discharge machining is machined into a fine irregular surface by cutting both sides of the cut with a grindstone. At this time, an oxide film is formed on both sides by heating the metal plate with frictional heat rubbed with a grindstone.
[0022]
As shown in the cross-sectional view of FIG. 3, the cut decorative molding 2 is fitted and fixed in the decorative groove 3 of the front panel 1. The decorative molding 2 is fixed by adhering to the decorative groove 3 via a double-sided adhesive tape 6. The decorative molding 2 can also be fixed by adhering to the decorative groove 3 with an adhesive.
[0023]
The door described above has a feature that a metal molding can be manufactured by cutting a metal plate, and the decoration molding can be firmly fixed so as not to be detached from the decoration groove of the surface panel. It door, along both sides of the decoration molding obtained by cutting the metal plate to a fine irregular surface, by providing a cushioning layer to the interior decorative groove fitting the decoration molding, fitting the decorative molding decorated groove This is because the uneven surface is brought into close contact with the cushion layer in the state. In addition, the door of the present invention has an oxidized uneven surface on both sides of the decorative molding that is cutting the metal plate, so that the oxide film prevents internal corrosion and realizes the feature that does not alter the decorative molding over a long period of time. To do.
【The invention's effect】
[0024]
According to the door manufacturing method of the present invention, a metal plate is cut with an NC laser processing apparatus to produce a decorative molding having both sides oxidized and uneven, and a surface panel with a decorative groove into which the decorative molding is inserted is formed into an NC. A turret punch press is used to press and produce a metal plate with a cushion layer laminated on the surface, and a decorative molding with both sides of the oxide uneven surface is inserted into the decorative groove with the cushion layer inside. It can be fixed to the decorative groove so that it does not come out of the decorative molding, and the NC laser processing device and NC turret punch press machine can insert both the decorative molding and the decorative groove efficiently and accurately. Can be processed. For this reason, the feature which can insert a decoration molding into a decoration groove and can manufacture a very high quality and beautiful door efficiently is realized.
[Brief description of the drawings]
1 is an enlarged perspective view of a main part of a conventional door. FIG. 2 is a front view of a door according to an embodiment of the invention. FIG. 3 is a partially enlarged sectional perspective view of the door shown in FIG. Schematic sectional view showing the process of pressing the panel with a mold. [Fig. 5] Schematic sectional view of the turret punch press. [Fig. 6] A perspective view showing the lower mold of the mold. [Fig. FIG. 8 is a cross-sectional view showing a process of pressing a surface panel with the mold shown in FIG. 6 and FIG.
DESCRIPTION OF SYMBOLS 1 ... Front panel 2 ... Decoration mall 3 ... Decoration groove 4 ... Cushion layer 5 ... Oxidation uneven surface 6 ... Double-sided adhesive tape 10 ... Turret punch press 11 ... Mold 11A ... Lower mold 11B ... Upper mold
DESCRIPTION OF SYMBOLS 11a ... Convex part 11b ... Concave part 12 ... Upper turret 13 ... Lower turret 14 ... Table 15 ... Transfer means 16 ... Clamp 17 ... Up-and-down base 18 ... Elastic body 21 ... Surface panel 22 ... Decoration mall 23 ... Decoration groove 24 ... Mall end engagement Stopper 24A ... Upper presser part 24B ... Lower presser part

Claims (1)

A decorative molding in which a metal plate of a color different from that of the front panel (1) is cut into the decorative groove (3) of the front panel (1) provided with a narrow decorative groove (3) by pressing the metal plate (2) is a method of manufacturing a door in which the decorative molding (2) is bonded and fixed to the bottom of the decorative groove (3),
The metal plate is cut with an NC laser processing device, and the decorative molding (2) is manufactured as an oxide uneven surface (5) which is an oxide film on both sides and is a fine uneven surface,
With the NC turret punch press machine (10), press the metal plate with the cushion layer (4) laminated on the surface, and decorate the cushion layer (4) up to the interior of the decorative groove (3). Provided a groove (3),
The decorative molding (2) is fitted into the decorative groove (3) so that the oxidized uneven surfaces (5) on both sides are in close contact with the cushion layer (4) of the front panel (1). (2) Adhering and fixing the decorative groove (3) to the decorative groove (3), and fixing the decorative molding (2) with the cushion layer (4) and the oxidized uneven surface (5) so as not to come out into the decorative groove (3) Manufacturing method.

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