KR100419363B1 - Simplified mold for frp molding - Google Patents

Abstract

The present invention relates to a mold used for forming a large size FRP molding, forming a frame formed in a lattice form by arranging a plurality of square pipes that are bent and cut according to the shape required for the position to be applied in the longitudinal direction, and the molding According to the shape and size of each space formed by the square pipes constituting the frame, a plurality of metal plates are attached to one side of the forming frame by forming a curved curve required for each part to be applied using a tool such as a rubber hammer. A mold part including a molding panel; An inner reinforcement frame composed of a plurality of square pipes which are bent and cut according to the outer shape formed by the molded frame of the mold part, the inner reinforcement frame attached to form a shape surrounding the molded frame from the outside, and a radial reinforcement frame coupled to the inner reinforcement frame, Mold reinforcement portion comprising an outer reinforcement frame and a side reinforcement frame; including, by making the mold in the prior art by inevitably to eliminate the elements that had to inevitably bear the time and economic burden of ships, ports and The present invention provides a simple mold for FRP molding having an effect of improving workability and cost reduction related to drying of large FRP moldings including offshore structures, and having an effect that can flexibly respond to partial design changes.

Description

SIMPLIFIED MOLD FOR FRP MOLDING}

The present invention relates to a mold for molding an article made of FRP material, and more particularly, to mold and mold construction using an aluminum frame and panel having various shapes manufactured to a required surface shape. It is about a method.

In general, as well as FRP, various kinds of synthetic resins are manufactured and used in products of various shapes and applications. Products using such resin materials are formed by a mold, such as injection molding, extrusion molding, blow molding and the like.

The present invention relates to a product manufactured using FRP, among other various products molded using a mold as described above, wherein the FRP is laminated with glass fiber by hand-layup, spray-up, etc. It is used for forming various structures by reinforcing strength rolls, and examples thereof include medium and small vessels, water tanks, cooling towers, and the like.

In the manufacture of the application examples, a method of forming and assembling a plurality of parts and a method of molding into a single body using a single mold are used. When forming and assembling parts, a joint finish between the parts requires waterproofness. There is a very difficult problem in terms of the characteristics of the product, and when molding into a single body using a single mold is encountered a number of problems due to the problems associated with forming the mold as the size of the formation increases.

A representative example of forming the outline in a single body using a single mold is a ship.

In general, small ships have been mainly made of wooden ships made of wood, and steel ships made of steel are used for medium and large ships.

However, in recent years, small and medium-sized vessels such as motorboats and coastal fishing vessels used for leisure yachts, fishing boats, speedboats, water skis, etc. are durable enough to be used semi-permanently, and are resistant to salinity, moisture and chemicals. Corrosion resistance that does not corrode in wetlands, hygienic enough to be used as a water tank, and much higher strength than other materials for the same weight, 1/5 of iron and 3/5 of aluminum Ultra-light weight, ultra-light weight, insulation with low thermal conductivity of about 1/6 of iron and 1/350 of aluminum, safety with little change due to external physical and chemical effects, and easy to lose shape even with temporary shock or pressure Not only does it have excellent resilience, but also shipbuilding is made of FRP (Fiberglass reinforced plastics) which is easy to choose from various colors. With the strength and structural safety, it is possible to lighten the vessel, build a high-power and high-speed vessel, and combine excellent corrosion resistance and material durability to increase the life of the vessel and to provide excellent formability. It is possible to build various types of ships that are not uniform.

As described above, the FRP ship is a wooden mold process, which is a step of manufacturing a mold such as a mold mold in order to mold a suspension process, a hull and a house, which is a preliminary step for producing a mold with a reduced design 1: 1. After the attached coating process, FRP lamination process, framing process and interior process will have a completed vessel form.

Prior art FRP vessels as described above require a large amount of time and economic investment in the construction of the wooden mold itself, in particular the production of the wooden frame to form a frame and the linearly processed wooden board required for the formed frame It's formed one by one,

The formation of the frameworks and wooden boards, which are formed by bending and shaving wood, becomes impossible without highly skilled workers, which means that they have to rely on manual labor, which is the reason for demanding the above-mentioned time and economic investment and workability. It has been a factor to deteriorate.

In addition, as the size of the molding to be molded increases, it does not meet the demand for mass production. Therefore, if the size is similar, if there is a need for partial design change depending on the purpose of use, the flexibility to be easily accommodated as necessary Although it is required, partial design changes are difficult, however, there is a problem that a greater burden is placed on the production cost if it is not mass production.

In addition to the vessel, in the case of a large water tank or a large cooling tower, the FRP is laminated using a single mold to form a single body. This has a great advantage, but there is too much burden to produce a mold, the situation is not easy to apply.

In order to solve this problem,

An object of the present invention is to form a large FRP molding, to improve the workability of the formation of itself to reduce the unit cost burden, can be applied flexibly when changing the design, work related to the work of laminating the FRP The present invention also provides a simple mold for improving sex.

1 is a perspective view partially showing an embodiment according to the present invention;

FIG. 2 is a side view partially cut away from the embodiment of FIG. 1; FIG.

3 is a perspective view partially showing the rear of the embodiment of FIG. 1;

Figure 4 is an enlarged cross-sectional view of the coupling portion of the molding panel in the embodiment of FIG.

5 is a sectional view showing another example of FIG.

Figure 6 is a perspective view partially showing another embodiment according to the present invention.

FIG. 7 is an enlarged cross-sectional view of a coupling part of a molding panel applied to FIG. 6.

Explanation of symbols on the main parts of the drawings

10: molding skeleton

20: grid cell

30: molding panel

35: inner reinforcement frame

40: radial reinforced frame

45: outer reinforcement frame

50: side reinforced frame

60, 70: wing

80: guide pin hole

The present invention for realizing this,

A molded frame formed in a lattice form by arranging a plurality of square pipes which are bent and cut according to the required shape of the position to be applied in a longitudinal direction,

It is formed by using a sheet of metal material according to the shape and size of each space formed by the square pipes constituting the molded frame, and is molded into a linear circumferential curve required for each part to be simply applied using a tool such as a rubber hammer. A mold part including a plurality of molding panels attached to one side of the molding frame;

An inner reinforcement frame composed of a plurality of square pipes that are bent and cut according to the outer shape formed by the molded frame of the mold part, and attached to the outer frame to surround the molded frame;

A radial reinforcing frame composed of a plurality of square pipes radially protruding outward from an outer surface of the square pipe constituting the inner reinforcing frame;

An outer reinforcement frame connecting the ends of the respective square pipes constituting the inner reinforcement frame, the outer reinforcement frame consisting of a plurality of square pipes having a smooth curve linear regardless of the linearity of the mold part and the inner reinforcement frame, and

A mold reinforcing part including a side reinforcing frame composed of a plurality of square pipes connecting the square pipes constituting the outer reinforcing frame;

It provides a simple molding for FRP molding comprising a.

In addition, the pipe forming the molded frame of the mold portion has a feature that can be replaced with a square pipe having a wing portion protruding to both sides, as well as a square pipe having a simple square cross-section.

In addition, in the square pipe having the wing portion, the wing portion extends to both sides in the same plane as one side of the square pipe, or protrudes to both sides in the retracted position on the plane by the thickness of the molded panel to be attached. .

BEST MODE Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a perspective view partially showing an embodiment according to the present invention, FIG. 2 is a side view partially showing the embodiment of FIG. 1, and FIG. 3 is a perspective view partially showing the rear of the embodiment of FIG. 1.

4 is an enlarged cross-sectional view of the coupling portion of the molded panel in the embodiment of Figure 1, Figure 5 is a cross-sectional view showing another example of FIG.

Figure 6 is a perspective view showing a part of another embodiment according to the present invention, Figure 7 is an enlarged cross-sectional view showing the coupling portion of the molding panel applied to FIG.

As a preferred embodiment of the present invention is to be built for the purpose of forming the hull of the FRP ship,

According to the design of the ship, a curved frame 10 is formed so that each pipe forms a plurality of lattice cells 20 by bending, cutting, arranging them vertically and horizontally, and joining them by welding, which are required in a position to apply a plurality of square pipes. do.

The metal plate is cut in accordance with the shape and size of the grid cells 20, which are spaces formed by the square pipes constituting the molded frame 10, to each part to be simply applied using a tool such as a rubber hammer. The mold part is completed by attaching a plurality of forming panels 30, which are formed in the required curved cloud curve, to one side of the forming frame 10.

On the opposite side to which the molding panel 30 is attached in the molding frame 10 constituting the mold portion is provided with an inner reinforcement frame 35 attached in the form of wrapping in the width direction of the hull to be formed using a plurality of square pipes,

Radial reinforcing frame 40 composed of a plurality of square pipes projecting radially outward from the outer surface of the square pipe constituting the inner reinforcement frame 35,

The outer end is connected to the end of each square pipe constituting the radial reinforcement frame 40, and composed of a plurality of square pipes having a smooth linear curve irrespective of the linear shape of the mold portion and the inner reinforcement frame 35 Reinforcing frame (45), and

A mold reinforcement part is formed by including a side reinforcement frame 50 composed of a plurality of square pipes connecting the square pipes constituting the outer reinforcement frame 45.

The mold part formed as described above is constructed using a metal pipe and a panel, and as the joining between the members is made by welding, there is a possibility of deformation due to the influence of ambient conditions including temperature and humidity, thereby preventing deformation. In order to be combined with the mold reinforcing portion, it is provided with improved durability.

The pipe used to form the molded frame 10 of the mold portion, as shown in Figure 4, not only uses a square pipe having a simple square cross-section, but also more firmly coupled to the molding panel 30 to be attached When necessary, as shown in Figure 5, it may be provided with a wing portion 60 protruding to both sides of the attachment surface of the square pipe forming the molded frame (10).

However, in any case, the rectangular pipe used for the mold reinforcing part is preferable to use a rectangular pipe having a simple rectangular cross section on the cost side, and all the pipes including the pipe used for the mold part are required for formability and workability. Due to the excellent moldability related to bending and the like, since its weight is relatively light and easy to handle, it is preferable to use an aluminum square pipe having excellent workability.

As described above, the forming panel 30 is processed and attached to each of the lattice curves required by the lattice cells 20 formed by the pipes constituting the forming frame 10, wherein each of the lattice cells 20 It is processed to have an excess of overlapping portions for attachment to one side of the square pipe in the same shape.

The edge portion of each forming panel 30 is attached to be in contact with each other in the state of being attached to one side of the square pipe together with the edge portion of the other forming panel 30 adjacent, it is formed so as not to generate a gap between the edge portion This makes it possible to smoothly form the surface during FRP lamination.

The forming panel 30 may be manufactured using various metal plates, but it is preferable to use an aluminum panel which is inexpensive and light and easy to handle while having ductility and malleability required for forming a curved surface. .

The outer reinforcement frame 45 is formed at the outermost part, the linear of its own is formed by bending the linear of the natural curve, so that it is possible to work while rolling the mold during FRP stacking, to stack the FRP The workability is also improved.

The spacing between the square pipes constituting the molded frame 10 varies according to the required linearity at each position. If the linear curved curve is complex, the square pipes constituting the molded frame are partially removed and formed in the required linear shape. The molded panel 30, which is easy to carry, can be processed and attached larger.

In another embodiment of the present invention, in the above embodiment, the forming panel 30 is overlapped and attached to one surface of the pipe constituting the forming frame 10, but as shown in FIG. 7, the forming panel 30 to be attached is attached. By forming the molding frame 10 by using a pipe having wings 70 protruding to both sides at a position retracted on one plane of the square pipe constituting the molding frame 10 by the thickness of the molding frame 10 Instead of attaching 30 to one surface of the square pipe forming the molded frame 10, the mold part may be formed by overlapping with the provided wing part 70. In this case, the coupling between the wing 70 and the molding panel attached thereto may be bolted or riveted using bolts, so that the durability and strength of the coupling between the pipe and the molding panel 30 are particularly required. It is possible.

As described above, the simple mold of the present invention not only forms a whole mold in one mold, but also forms the same method and configuration, but separates it into various parts, as shown in FIG. It is possible to complete the assembly by inserting the pin into the pin hole 80 to combine, thereby further improving the workability associated with the manufacture of the mold, and has improved flexibility with respect to the design change. In addition, the separate mold can be applied to form a large blow molding mold.

Although the present invention has been described in detail with reference to specific embodiments, those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone can see it easily.

As described above, the simple mold of the present invention can eliminate the elements that had to be inevitably taken in time and economic burden as the mold was manufactured in a wooden mold, and thus related to the drying of large-scale FRP moldings including ships, ports, and marine structures. It has the effect of improving the workability and cost reduction, and has the effect of being able to respond flexibly to partial design changes.

Claims (3)

A molded frame formed in a lattice form by arranging a plurality of square pipes which are bent and cut according to the required shape of the position to be applied in a longitudinal direction, It is formed by using a sheet of metal material according to the shape and size of each space formed by the square pipes constituting the molded frame, and is molded into a linear circumferential curve required for each part to be simply applied using a tool such as a rubber hammer. A mold part including a plurality of molding panels attached to one side of the molding frame; An inner reinforcement frame composed of a plurality of square pipes that are bent and cut according to the outer shape formed by the molded frame of the mold part, and attached to the outer frame to surround the molded frame; A radial reinforcing frame composed of a plurality of square pipes radially protruding outward from an outer surface of the square pipe constituting the inner reinforcing frame; An outer reinforcement frame connecting the ends of the respective square pipes constituting the inner reinforcement frame, the outer reinforcement frame consisting of a plurality of square pipes having a smooth curve linear regardless of the linearity of the mold part and the inner reinforcement frame, and A mold reinforcing part including a side reinforcing frame composed of a plurality of square pipes connecting the square pipes constituting the outer reinforcing frame; Simple molding for FRP molding comprising a. The method of claim 1, The pipe forming the molded frame of the mold portion is a simple mold for FRP molding, characterized in that the rectangular pipe having a simple square cross section or a square pipe with wings protruding to both sides. The method of claim 2, The wing portion extends to both sides in the same plane and one side of the square pipe, or protrudes to both sides in the retracted position on the plane by the thickness of the molded panel to be attached, characterized in that the FRP molding simple mold.