JPH062376B2 - Manufacturing method of resin panel with display - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display panel for wall decoration, a panel used for nameplates, various signboards, etc., and partly has a display portion for characters, figures, etc. The present invention relates to a method of manufacturing a resin panel with a display unit that also has the function of an advertising signboard.

2. Description of the Related Art Conventionally, as a resin panel with a display unit of this kind, a portion corresponding to the display unit of a panel body molded into a required shape is punched or cut out and at the same time, the opening portion is closed. It is known that a slightly larger colored back plate is adhesively fixed to the panel body from the back side thereof.

While this type of panel makes it easy to manufacture and process the display part, it not only has a recessed part corresponding to the display part on the surface of the panel and has a bad external fitting appearance, but it was also used as a panel for illumination. In this case, there is a difficulty in that the outline of the back plate is seen as a shadow.

On the other hand, in order to solve the above-mentioned problems, it is considered that an opening corresponding to the above-mentioned display section is bored in the panel body, and the display piece is fixed to the opening in the fitted state. It As a method of manufacturing such a panel, a portion corresponding to the display piece to be fitted is drafted on the panel body, and an opening portion is formed by cutting along the draft, and then the opening portion is formed. A method is conceivable in which the display piece is fitted in and is bonded and integrated with an adhesive.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, the display piece can be fitted over the entire circumference without a gap even when the above-described punching is performed by hand or even when using a highly accurate machine tool. It is practically very difficult to form an accurate opening. Thus, due to the presence of such a gap, particularly when used as an illumination panel such as an illumination anddon, the internal light source is directly visible through the gap, which makes it unsightly and lacks a sense of luxury. There is.

In order to solve the above-mentioned problems, the present invention eliminates a gap between the display piece and the opening portion into which the display piece is fitted,
Moreover, it is an object of the present invention to provide a method of manufacturing a resin panel with a display unit that is easy to manufacture.

Means for Solving the Problems In the present invention, one or a plurality of display pieces (2) formed of predetermined characters, figures, etc. are turned inside out in a panel molding die (3). By placing the thermoplastic synthetic resin substrate (1) heated to a thermoforming temperature on the mold (3) and pressure-molding it. A panel body (4) having a required shape having a molding convex portion (5) is molded, and thereafter, a peripheral wall (at least the outer peripheral edge (2a) of the display piece (2) is attached to the molding convex portion (5)). 5a) is cut or cut to form an opening (6) for fitting the display piece, and then the display piece (2) is fitted into the opening (6). , By injecting an adhesive (8) into these boundaries (7), the display piece (2) is fitted into the opening (6). The method of manufacturing a display mounting portion resin panel, characterized in that the adhesive fixing the viewing state in which the subject matter.

The material of the thermoplastic synthetic resin substrate (1) is not particularly limited as long as it can be subjected to pressure molding, but for example, vinyl chloride synthetic resin, ABC synthetic resin and the like are preferably used. In particular, when used for outdoor use, it is desirable to use a vinyl chloride synthetic resin having excellent weather resistance.

The display piece (2) is formed into a predetermined character, figure, etc., and is preferably made of, for example, vinyl chloride synthetic resin, acrylic synthetic resin, or the like.

When this panel (A) is used for illumination, a translucent material is used as the display piece (2), but it is not necessarily limited to this and a light diffusing material is used. Good as a thing. Thickness t2 of the above-mentioned display piece (2)
Is preferably the same as or relatively thicker than the thickness t1 of the substrate (1).

Then, the display piece (2) is turned upside down and placed at a desired position in the panel molding die (3) so as to be in a desired array state.

Next, the synthetic resin substrate (1) is supported by a clamp and heated to a thermoforming temperature by a heater, and thereafter, a pressure forming operation is performed according to a conventional method. By this molding, the heat-softened substrate (1) is molded in a state of being in contact with the display piece (2) arranged on the surface of the molding die (3).

After the molding operation is completed, the panel body (4) is taken out from the mold (3) and the display piece (2) is removed from the panel body (4). Since the display piece (2) and the panel body (4) are not welded to each other, the display piece (2) can be easily removed by lightly applying vibration if necessary. In order to perform such removal, it is necessary that the peripheral wall (5a) of the molding convex portion (5) of the panel body (4) formed by the display piece (2) be vertical or have a draft. Therefore, it goes without saying that it is necessary to form the display piece (2) so that the outer peripheral edge (2a) thereof has a vertical or tapered shape so as to satisfy the above requirements.

Next, the molding convex portion (5) of the panel body (4) is cut or cut and removed to form the opening portion (6) for fitting the display piece. At the time of forming the opening (6), cutting or cutting may be performed so that at least the peripheral wall (5a) of the molding projection (5) along which the outer peripheral edge (2a) of the display piece (2) is located is left. is necessary. In particular, in this step, the display piece (2) can be easily flushed with the panel body (4) by cutting or cutting and removing a portion corresponding to the thickness t2 of the display piece (2). It is preferable because it can be fitted.

Next, the display piece (2) is fitted into the opening portion (6), and the adhesive (8) is injected into the boundary (7) of the display piece (2) to open the opening portion (2). 6) It shall be adhesively fixed in a fitted state. The fitting can be easily performed by reversing the front and back and performing from the front surface side of the panel body (4).

When the thickness (t2) of the display piece (2) is thicker than the thickness (t1) of the substrate (1), the height of the peripheral wall (5a) of the opening (6) is set to the above-mentioned value. Substrate (1) thickness t1
It can be set to a larger value, and the adhesive area between the display piece (2) and the peripheral wall (5a) is increased and the adhesiveness is improved.

Further, when the cutting or cutting removal of the convex portion (5) is performed while leaving the portion corresponding to the thickness t2 of the display piece (2), the panel body (4) is placed on the flat workbench (B). It suffices to place the display side up, and fit the display pieces (2) corresponding to the respective apertures (6). By this fitting, the panel body (4) and the display piece (2) are flush with each other. Then, it can be completed by injecting the adhesive (8) into the boundary (7) from the fitted state.

Embodiment An embodiment in which the present invention is applied to a wall decoration display panel will be described below with reference to the drawings.

In FIG. 1, (1) is a thermoplastic synthetic resin substrate made of vinyl chloride synthetic resin and having a thickness of about 1 mm, and (2) is a predetermined transparent material made of vinyl chloride synthetic resin having a thickness of about 2 mm. It is a display piece formed on a character.

Then, first, as shown in FIG. 1, the display piece (2) was placed at a predetermined position in the molding die (3) in a state in which it was turned upside down so as to be in a predetermined arrangement state.

Next, the synthetic resin substrate (1) is supported by a clamp and heated to a thermoforming temperature by a heater (not shown), and then,
As shown in FIG. 2, a pressure forming operation was performed according to a conventional method.

After completion of the molding operation, as shown in FIG. 3, the panel body (4) is taken out from the mold (3), and the display piece (2) is removed from the panel body (4) to remove the panel body (4). The molding convex portion (5) is cut and removed by using an NC router (9), leaving a portion corresponding to the thickness t2 of the display piece (2), to thereby form an opening portion (6) for fitting the display piece. ) Was formed.

Next, as shown in FIG. 4, the panel body (4) is placed on the flat workbench (B) with its front surface side facing upward, and the apertures ( 6)
By fitting the display pieces (2) respectively corresponding to the above and filling the boundary (7) with the adhesive (8),
The display piece (2) was adhesively fixed in a state of being fitted into the opening (6).

In the wall surface decorative panel (A) thus obtained, each of the display pieces (2) is adhesively fixed to the panel body (4) so as to be flush with each other, and each of the display pieces (2) has each opening ( 6) It was fixed without any gap inside.

Note that the present invention is not limited to the method for manufacturing the wall-decoration display panel as shown in the above-mentioned embodiment, in short, as long as it is a resin panel having a fitting type display portion, it can be used in various signboards and the like. It can also be applied to the manufacture of panels as used.

EFFECTS OF THE INVENTION As described above, the present invention forms the opening (6) of the panel body (4) into which one or a plurality of display pieces (2) formed in predetermined characters, figures, etc. are to be fitted. In doing so, by using the display piece (2) to form a molding projection (5) corresponding to the panel body (4), and then cutting or cutting the molding projection (5). Since the opening (6) for inserting the display piece is formed, a troublesome draft for forming the opening (6) into which the display piece (2) is to be inserted in the panel body (4). It is possible to omit the above, and not only to improve the efficiency of the work, but also to form the error-free aperture portion (6) corresponding to the display piece (2) without requiring skill. Next, the display piece (2) is fitted into the opening (6), and the adhesive (8) is injected into the boundary (7) to bond and fix the display piece (2). It can be fixed in a state of being fitted into the opening (6) without a gap over the entire circumference. Therefore, when it is used as an illuminating panel such as an illuminating ANDON, it is possible to avoid the inconvenience that the internal light source is directly visually recognized through the gap.

Further, since the obtained panel (A) is one in which the display piece (2) is fitted and fixed in the opening (6), even when this is used as a panel for illumination such as an illumination anddon, There is no inconvenience that the outline looks like a shadow and is seen as an external appearance unlike the case where the plate is adhesively fixed.

As described in claim 2, if the molding convex portion (5) is cut or removed while leaving the thickness t2 of the display piece (2), the panel main body (4) has its surface. It is placed on a flat workbench (B) with its side up and the panel body (without using a separate holder, etc.) is operated by simply inserting the display piece (2) into the opening (6). 4) and the display piece (2) can be set to be flush with each other. Therefore, after that, by simply injecting the adhesive (8) into the boundary (7) between the opening (6) of the panel body (4) and the display piece (2) in that state, the surface is made flush. It is possible to easily obtain a resin panel (A) with a display unit.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a vertical sectional view showing a state before a molding operation, FIG. 2 is a vertical sectional view showing a molding state, and FIG. 3 (A) is a display in the molding state. FIG. 3B is an enlarged vertical cross-sectional view showing a detached state of the display piece, FIG. 3C is an enlarged vertical cross-sectional view showing a cutting removal process of the molding convex portion, and FIG. FIG. 5 is an enlarged vertical cross-sectional view showing an adhesive injection operation, and FIG. 5 is a partial cutaway perspective view of a product. (1) ... Thermoplastic synthetic resin substrate, (2) ... Display piece, (2a)
... outer peripheral edge, (3) ... panel molding die, (4) ... panel body, (5) ... molding projection, (5a) ... peripheral wall, (6) ... opening, (7) ... boundary, ( 8) ... adhesive.

Claims (2)

[Claims] 1. A panel molding die (3) is provided with one or a plurality of display pieces (2) formed in predetermined characters, figures, etc. in an inverted state, and then at a thermoforming temperature. By disposing the heated thermoplastic synthetic resin substrate (1) on the mold (3) and performing pressure molding, the display piece (2) is obtained.
The panel body (4) having the required shape having the molding convex portion (5) corresponding to is molded, and thereafter, at least the outer peripheral edge (2a) of the display piece (2) is aligned with the molding convex portion (5). Surrounding wall (5a)
The opening (6) for fitting the display piece is formed by cutting or cutting in a manner that leaves the mark, and then the display piece (2) is fitted into the opening (6). By injecting the adhesive (8) into the boundary (7) of the above, the display piece (2) is adhesively fixed in a state of being fitted into the opening (6). Production method. 2. Cutting or cutting removal of the molding convex portion (5),
The method for manufacturing a resin panel with a display unit according to claim 1, wherein the process is performed while leaving the thickness (t2) of the display piece (2).