JPS6319138Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is applicable to fiber-reinforced plastics (FRP).
This relates to a molding device, in which the structure of the divided inner mold is especially improved.

(b) Background technology When molding a complex-shaped product using FRP, such as a cylindrical body consisting of a cylindrical part 1 and a bellows part 2 as shown in Fig. 1, the inner diameter for molding must be adjusted to make it possible to remove the mold. It needs to be split type.

Accurate assembly of split molds is necessary to obtain molded products with high precision, and rapid assembly and disassembly is necessary for efficient work. Particularly in recent years, there has been a demand for accurate molding of large and long molded products.

The object of this invention is to provide a molding device that can meet such demands.

(c) Solution to the problem This invention provides a slider that slides in the length direction around the core mold, provides a guide groove in the length direction on the slider, and divides the slider in the length direction. A guide device is provided between the core mold and each piece of the inner mold through the guide groove for moving each piece in the radial direction, and a connecting link is provided between the slider and each piece. The structure is such that both ends are rotatably attached.

According to the above-mentioned configuration, when the slider is slid in the axial direction of the core mold, each piece of the inner mold moves in the radial direction via the links, and the inner mold is assembled and disassembled.

(D) Embodiment FIGS. 2 to 4 show a molding apparatus according to an embodiment of this invention, in which a cylindrical slider 4 is inserted around a core mold 3, and the slider 4 is A cylindrical inner mold 5 is fitted around the mold at regular intervals in the radial direction. This inner mold 5 is the third
As shown in the figure, it is made up of a combination of divided pieces 6, 6' divided into a plurality of pieces in the length direction.

The slider 4 is provided with long guide grooves 7 in the sliding direction of the slider 4 at regular intervals in the length direction and corresponding to each of the divided pieces 6, 6' in the circumferential direction. . Further, a guide device 8 is provided between each of the divided pieces 6, 6' and the core mold 3.

The guide device 8 consists of a fitting recess 9 fixed to the core mold 3 and a fitting protrusion 10 fixed to each divided piece 6, 6'. 7, and by fitting the recess 9 and the protrusion 10, each divided piece 6, 6' is guided in the radial direction.

Further, between each divided piece 6, 6' and the slider 4, a connecting link 11 is provided for each guide device 8.
, and both ends of each connecting link 11 are rotatably attached to the slider 4 and each divided piece 6, 6', respectively.

Therefore, when the slider 4 is moved in the length direction of the core mold 3, the connecting link 11 is raised or lowered, and each divided piece 6, 6' can be moved while being guided in the radial direction.

Now, when the slider 4 is moved and the link 11 is erected as shown in FIG. 2, the divided pieces 6 and 6' are combined to form a cylindrical inner mold as shown in FIGS. 3 and 4. 5.

In this state, the matrix resin-impregnated fibers are wound around the inner mold 5 to form a wrapped layer 1 as shown in FIG.
2 is formed, a suitable split outer mold 13 is placed thereon, the mold is clamped, and then heated and molded.

The inner mold 5 can be disassembled during demolding by moving the slider 4 to the opposite side and tilting the link 11.

Alternatively, the guide device 8 may be constituted by a hydraulic jack, and rattling of the connecting portion of the link 11 may be compensated for by pressurization of the hydraulic jack.

(e) Effects As described above, since this invention moves each divided piece using an interlocking mechanism consisting of a slider and a link, the inner mold can be quickly assembled and disassembled. Furthermore, even if the inner mold is large or long, the interlocking mechanism allows it to be supported without deflection, so that the assembly accuracy of each divided piece is improved.

[Brief explanation of the drawing]

Fig. 1 is a front view of the finished product, Fig. 2 is a partially omitted sectional view of the embodiment, Fig. 3 is an enlarged sectional view taken along the - line in Fig. 2, and Fig. 4 is a cross section taken along the - line in Fig. 2. FIG. 5 is a partially omitted sectional view of the mold clamped state. 3...core mold, 4...slider, 5...inner mold,
6, 6'...Divided piece, 7...Guide device, 1
1...Connection link.

Claims (1)

[Claims for Utility Model Registration] (1) A slider that slides in the length direction is provided around the core mold, a guide groove in the length direction is provided in the slider, and the slider is divided in the length direction around the slider. A guide device is provided between the core mold and each piece of the inner mold through the guide groove to move each piece in the radial direction, and a connecting link is provided between the slider and each piece. A fiber-reinforced plastic molding device with both ends rotatably attached. (2) The fiber-reinforced plastic molding apparatus according to claim 1, wherein the guide device is a hydraulic jack.