JP3201832B2 - Manufacturing method of long molded body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a long molded article for producing a foamed resin molded article used for various purposes such as sleepers and building members.

[0002]

2. Description of the Related Art Conventionally, when a foamed resin molded product such as a sleeper is manufactured, a reinforcing material impregnated with a foam-setting resin liquid is loaded into a molding passage surrounded by four endless belts of a molding device. Thus, a desired foamed resin molded article is manufactured.

[0003]

However, in the above-mentioned production, when the molding speed is increased or a molded product having a large cross-sectional size is molded, the molded product removed from the molding passage (die) is bulged, Or surface cracks occur. This is due to insufficient curing of the molded body due to insufficient cooling. Therefore, in order to prevent this, it is necessary to cool the molded body more, but it is not easy to cool the molded body surrounded by the endless belt in the molding passage, and the molded body is The thermal conductivity is low due to the foamed resin molded article, and the effect is small even if the length of the molding passage (die) is simply increased.

[0004] The present invention has been developed in view of the above-mentioned points, and the object thereof is to form a molded product coming out of a molding passage from cracking on the surface due to residual foaming pressure or to reduce the size of the molded product. An object of the present invention is to provide a method for producing a long molded body that can be produced without being deformed.

[0005]

In order to achieve the above object, the present invention provides a manufacturing method having the following configuration. That is, a reinforcing material impregnated with a foaming curable resin liquid is loaded into a molding passage surrounded by four endless belts provided in a continuous manufacturing apparatus for a molded article, and the reinforcing material is supplied to the endless belt. With the progress of the process, it is continuously molded into a long molded body, and furthermore , the distal end side of the molded body regulating member is formed by a molded body regulating member having a tapered tip disposed at the outlet of the molding passage. The molding
In the state of being pressed by the cooling device to the continuous production device side,
Wherein to regulate foaming and deformed molded body, it is further said by the cooling device, traveling to go to the compact cooling and shape regulations to structure manufacturing method which is adapted to mold the desired molded body.

[0006]

According to the above construction, a reinforcing material impregnated with a foaming curable resin liquid is loaded into a molding passage, and a long molded body is continuously molded as the endless belt advances. The tip provided at the exit of the forming passage through which the formed body transfers to the cooling device is formed to be tapered , and the tip side is formed as described above.
The foaming pressure deformation of the molded body is regulated by the molded body regulating member pressed to the form continuous manufacturing apparatus side, and the molded body further moved forward is cooled and regulated by the cooling device,
The molded body is formed into a desired shape without being deformed by the foaming pressure.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2, reference numeral 1 denotes an apparatus for continuously manufacturing a molded body, and includes four endless belts 2, 3.
(The belts on both sides are not shown), and the molding passage 6 is formed so as to surround it. Reference numeral 4 denotes a guide roller for supporting the endless belts 2 and 3, and reference numeral 5 denotes a molded body regulating member, which is disposed at the outlet of the molding passage 6 as shown in the figure. The molded body regulating member 5 regulates the vertical width of the molded body between the belt return portion 7 of the device 1 and the cooling device 8 adjacent to the outlet of the molding passage 6. It is preferable that the molded body regulating member 5 is as close to the exit of the molding passage 6 as possible. Therefore, as shown in FIG.
The tip is tapered. Since the tip is tapered, the molded body regulating member 5 is easily deformed by losing the foaming pressure of the molded body A.

[0008] Therefore, by mounting the guide roller 4 along the turn curve of the belt return section 7, to press the molded body continuously producing device 1 side by the cooling device 8, fitted to the belt return section 7 The formed body restricting member 5 is supported by the guide roller 4 of the belt return section 7 to prevent deformation.
Incidentally, the molded body regulating member 5 may be provided with a roller 10 as shown in FIGS. 4 and 5 to support the slack of the endless belt 2 (3).

The cooling device 8 shown in FIGS. 6 and 7 is provided with a molded body restraining roller 9 by water sprayed from a nozzle 11 on the molded body A sent out from the molding passage 6 (see FIG. 1). And acts to regulate the vertical width of the conveyed compact. In addition, this roller 9
Is for reducing the frictional resistance with the compact.
A large number of molded body restraining rollers 9 on the lower surface side of the cooling device 8 are arranged at predetermined positions, and a large number of molded body restraining rollers 9 on the upper surface side can be moved vertically by a rotary thickness adjusting jig 12. As a result, the thickness of the molded body passing therethrough can be adjusted to a desired thickness.

[0010] Molded articles such as sleepers are continuously manufactured by the above-described apparatus. That is, a reinforcing material impregnated with a foam-setting resin liquid is loaded into a molding passage 6 formed by being surrounded by the four endless belts 2 and 3 (belts on both sides are not shown). The reinforcing material is continuously formed into a long formed body as the endless belt advances. Further, a molded body regulating member 5 disposed at the outlet of the molding passage 6 regulates deformation of the molded body due to foaming pressure when the molded body is transferred to the adjacent cooling device 8.
The molded body that has advanced into the cooling device 8 is cooled by the cooling device 8 and the shape is regulated by the upper and lower molded body restraining rollers 9 to produce a molded body having a desired thickness. You.

[0011]

As described above, according to the present invention, the compact during molding is not deformed by the foaming pressure by the compact regulating member or the cooling device, and the dimensional accuracy of the compact is improved. be able to. Therefore, it is easy to increase the production speed, and it is also possible to produce a molded article having a larger cross-sectional size.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an example of a production method according to the present invention;

FIG. 2 is an explanatory view showing a state in which a molded body regulating member is provided;

FIG. 3 is a perspective view of an example of a molded body regulating member;

FIG. 4 is a perspective view of another example of a molded body regulating member;

FIG. 5 is an explanatory view showing a state where the molded body regulating member shown in FIG. 4 is provided;

FIG. 6 is a plan view of a cooling device;

FIG. 7 is a front view of the cooling device,

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Continuous manufacturing apparatus of a molded object 2, 3, ... Endless belt, 5 ... Molding member regulating member, 6 ... Passage for molding, 8 ... Cooling device,

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 39/14-39/38 B29C 43/22-43/32 B29C 70/50-70/52

Claims (1)

(57) [Claims] 1. A molded article continuous manufacturing apparatus equipped with
A reinforcing material impregnated with a foaming and curable resin liquid is loaded into a molding passage surrounded by two endless belts, and the reinforcing material is continuously formed into a long molded body as the endless belt advances. molded, further wherein the molded body regulating member disposed to the tip formed in the tapered outlet of the molding passage, the molding tip side of the molded article regulating member
In the state of being pressed by the cooling device on the continuous production device side,
Regulate foaming and deformed in the molded body, further wherein the cooling device, the molded body progresses cool and shape regulations to is characterized in that so as to mold the desired shaped body elongated shaped body Manufacturing method.