JPH0310011Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a mold for molding a patterned synthetic resin molded product such as a bathtub.

(Prior art) As a conventional method for molding this type of synthetic resin molded product, for example, a first gel coat layer is applied to the mold surface of a mold, and then a second colored gel coat layer is applied. There is a method in which both gel coat layers are partially mixed to form a pattern, and then a reinforcing layer made of FRP (fiber-reinforced synthetic resin) is laminated on top of the pattern (as disclosed in Japanese Patent Application Laid-Open No.
(Refer to Publication No. 56-77115).

However, with this method, although patterns can be easily applied to the horizontal mold surface portions, it is difficult to pattern the other non-horizontal mold surface portions because the resin flows. Regarding this point, after the patterned mold surface part has hardened, it is possible to sequentially level the other mold surface parts and apply the pattern, but in the above method, the pattern is applied to all the mold surface parts. This method cannot be used because the cured resin layer proceeds at the same time.

(Purpose of the invention) The present invention has been made in view of the above-mentioned problems in the prior art. The purpose is to provide molds for products.

(Devised configuration) The mold of the present invention includes an inner mold, an outer mold divided corresponding to each mold surface of the inner mold, and a frame body that accommodates the inner mold and the outer mold therein, The frame has a generally annular shape and has at least four upper and lower frames of approximately the same shape and size.
The book is connected vertically and substantially parallel to each other by a book connecting rod, the connecting rod is curved outward, and the base of the inner mold is fixed to the lower frame.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

The first bathtub manufactured using the mold of the present invention
As shown in the figure, a bathtub 1 is a patterned synthetic resin molded product having a pattern such as a natural marble pattern on its surface, and is molded using a mold 2 as shown in FIGS. 2 to 4.

The mold 2 includes an inner mold 3, an outer mold 4, and a frame 5 as main parts, and the frame 5 is made of iron.
As shown in the figure, it consists of an upper frame 6, a lower frame 7, and four connecting rods 8. The upper frame 6 and the lower frame 7 are substantially annular and have substantially the same shape and size, and are connected vertically and substantially parallel to each other by the connecting rods 8 . In addition, the connecting rod 8 is formed such that the central portion 8a is curved outward from the outer shapes of the upper frame 6 and the lower frame 7, so that the outline of the outer periphery of the frame 5 is approximately arc-shaped, and rotation It is considered to be a possible structure. Also,
Four wheels 9 for movement are attached to the lower side of the lower frame 7, making it movable.

The inner mold 3 is for molding the inner surface 1a (see FIG. 1) of the bathtub 1, and as shown in FIG. It is fixedly supported inside the lower frame 7.

The outer mold 4 is for molding the outer surface 1b (see FIG. 1) of the bathtub 1, and as shown in FIG.
outer mold plates 11a, 11b, 11c, 11d, 1
1e and a stile mold plate 12, each outer mold plate 11a... is a mold surface 3 of the inner mold 3.
The shape corresponds to a... Outer mold plate 11a
A joining flange 13 is provided on the periphery of the molding member 13 so as to be inclined outward, and the adjacent outer mold plates 11a are removably assembled by joining these joining flanges 13, 13 to each other. In addition, the joining flange 13,
13 are joined and fixed to each other using a vice 14 or bolts and nuts (not shown), as shown in FIG. The stile template 12 is for molding the flange portion 15 (see FIG. 1) of the bathtub 1, and has a rectangular ring shape with a cross section corresponding to the recess 15a of the flange portion 15.
As shown in the figure, an outer mold plate 11 is attached to the base 3f of the inner mold 3.
Joint flange 13 of a, 11b, 11c, 11d
. . , and is tightened and fixed by a shiyako vise 14 . The outer mold 4 is assembled inside the frame 5 so as to cover the outer periphery of the inner mold 3, and a cavity 16 having a shape corresponding to the bathtub 1 which is a molded product is provided between the outer mold 4 and the inner mold 3. [See Figure 2] is formed.

To mold the bathtub 1 using the mold 2, first, the liquid curable resin A is injected and filled into the cavity 16, and the curable resin A is cured to form the bathtub 1. Then, the outer mold 4 is disassembled and the bathtub 1 is demolded.

Next, the patterning work procedure in molding the bathtub 1 will be explained.

When patterning the surface portion of the molded product corresponding to the upper mold surface 3e of the mold 2, as shown in FIG. 5, the frame 5 is placed upright on the floor 17.
Make sure that the mold surface 3e is horizontal. In this state, the upper outer mold plate 11e is removed, a pattern-forming colored resin is injected onto the surface of the liquid curable resin A in this part filled in the cavity to create a pattern, and then the outer mold plate 11e is reused. 11e and seal it.

When patterning is applied to the surface of the molded product corresponding to the mold surface 3a on the side of the mold 2, as shown in FIG. 6, the frame 5 is turned over, the mold surface 3a is made horizontal, and then After removing the side outer mold plate 11a and applying the pattern as described above, remove the outer mold plate 11a again.
Attach and seal a. In order to make the mold surface 3a horizontal, first, use one end of the lower frame 7 as a fulcrum, pull down the upper frame 6 towards the floor 17, and with the frame body 5 tilted, move along the lower frame 7. Rotate to make one direction of the mold surface 3a, that is, the direction perpendicular to the drawing, horizontal. Next, the frame body 5 is rotated along the connecting rod 8 to adjust the inclination angle of the frame body 5, and the other direction of the mold surface 3a, that is, the horizontal direction with respect to the drawing, is made horizontal, so that the mold surface 3a is completely horizontally. Then, in this state, a spacer 18 for angle adjustment is inserted between the floor 17 and the frame 5 to stabilize the frame 5.

Remaining mold surfaces 3b, 3c, 3 on the sides of the mold 2
The surface portion of the molded product corresponding to d, which is to be patterned, is also patterned in the same manner as above. Note that the above steps are performed before the curable resin A is cured.

The present invention is applicable not only to the bathtub 1 as in the above embodiment, but also to molds for other patterned synthetic resin molded products. Further, in the above-described embodiment, it is preferable that the upper frame 6 and the lower frame 7 have a complete annular shape, but as long as they are of the same shape and size, a somewhat oval annular shape may be used, and the connecting rod 8 may also be formed over the entire length. It may also be arcuate. Further, the number of connecting rods 8 is at least 4.
A book is sufficient, and it is not limited to the illustrated example. Further, the upper frame 6 and the connecting rods 8 may be removable from the lower frame 7, so that the outer mold 4 can be easily assembled and disassembled. Furthermore, the frame 5 is optimally made of iron in terms of strength, but may of course be made of other materials such as aluminum.

(Effects of the invention) As detailed above, since the invention accommodates the inner and outer molds of the rotatable frame, it is possible to level the surface of the mold easily, quickly and reliably. ,
Therefore, the uncured curable resin does not flow, and the pattern can be easily and reliably applied to the portion of the molded product to be patterned. Moreover, since the surface of the mold is not limited to being horizontal and can be at any arbitrary angle, patterns can be applied at an optimal angle if necessary.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention; FIG. 1 is a partially cutaway perspective view of a bathtub that is a patterned synthetic resin molded product; FIG. 2 is a vertical sectional view showing a mold for the bathtub; Figure 3 is a perspective view showing the frame and inner mold of the same mold, Figure 4 is an exploded perspective view showing the outer mold of the mold, and Figures 5 and 6 show a method of forming a bathtub using the mold. It is a longitudinal cross-sectional view for explanation. 1... Bathtub (patterned synthetic resin molded product), 2...
Molding mold, 3... Inner mold, 3a, 3b, 3c, 3d,
3e...mold surface, 3f...base, 4...outer mold, 5...
...Frame body, 6... Upper frame, 7... Lower frame, 8... Connecting rod, 11a, 11b, 11c, 11d, 11e...
...Outer mold plate, 12...Stile mold plate, 16...Cavity.

Claims (1)

[Scope of utility model registration request] An inner mold, an outer mold divided corresponding to each mold surface of the inner mold, and a frame for accommodating the inner mold and the outer mold therein, the frame having a substantially annular shape and a substantially annular shape. An upper frame and a lower frame of the same shape and size are connected vertically and substantially parallel to each other by at least four connecting rods, the connecting rods are curved outward, and the lower frame has a base of the inner mold. A mold for patterned synthetic resin molded products characterized by being fixed.