JPS61116511A - Molding machine for foaming material - Google Patents

Abstract

PURPOSE:To reduce the price of a machine and to make the machine compact by a method wherein the zone of the start section to the section where foaming material is reacted, expanded and shows the largest blowing pressure are provided by an endless belt mechanism and the zone where carriage and curing are performed is provided with a roll mold. CONSTITUTION:Foaming material 2 (expandable synthetic resin material etc.) is spread, discharged, etc. by a foaming material supply machine 1 on a medium 3 and expanded in a curing oven 4. The curing oven is composed of an endless belt mechanism 5, a roll mold 15, heaters 20-23 and a cover 24. The foaming material 2 is molded in a specified shape and supplied at such a hardness that the original shape is not deformed by cutting, carriage.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention involves dispensing a foaming material, such as a foamable synthetic resin raw material, onto a base material and reacting and foaming it to form a composite plate of any shape within a predetermined time. , relates to an apparatus for continuously forming sanderch boards, etc.

(Prior art) As a device for manufacturing composite boards and heat insulating boards,
3744, Japanese Utility Model Publication No. 59-17620, etc.

(Problems to be Solved by the Invention) When molding a foamed material using the above-mentioned apparatus, there are the following disadvantages. In other words, since the former device is manufactured by rotating a caterpillar-type mold member, the entire device must be made sturdy, and the motor therefore requires high horsepower, and is heavier than steel belts etc. It is several times heavier, but the rotation speed is up to 10~15a+/win.
The process is slow, consumes a huge amount of energy, has poor productivity, increases costs, and has the drawbacks of making the equipment expensive. In addition, the latter device has a steel belt mechanism, and the forming speed is 30 to 40 m faster than the former.
/win rotates, but there is a drawback that it is impossible to manufacture complex-shaped composite plates because the mold member itself is a flat plate.

Furthermore, in the latter device, since the steel belt rotates, the steel belt will be difficult to bend unless the diameter of the pulley is large to a certain extent, so it is necessary to form the large diameter pulley to about 1 meter, and as a result, the entire device The disadvantage was that it was large and consumed a lot of energy.

Further, since all conventional devices are large-sized, they have the disadvantage that it takes about 1 to 1.5 hours to raise the temperature of the mold material to a predetermined temperature.

(Means for Solving the Problems) In order to eliminate such drawbacks, the present invention uses an endless belt mechanism to form the reaction and foaming of the foaming material until the time when the foaming pressure reaches its maximum, and then This is a foam molding device in which the area for conveying and curing is formed by a trochanter type consisting of a group of rollers.

(Function) The endless belt mechanism reacts and foams the foam material raw material to form it into a predetermined shape, and the trochanter type conveys the foam material sent out from the mechanism as it is, cures it, and forms it into a predetermined shape. The upper part is sent into the factory in a nearly cured state, and is then fed to a traveling cutter that cuts it into a predetermined length in the next process.

(Example) Hereinafter, an example of the foam material molding apparatus according to the present invention will be described in detail with reference to the drawings. Fig. 1 is an explanatory diagram showing the outline of the above-mentioned device, and () is supported by a foam material feeder so as to be movable up and down and left and right. , and other discharge machines, etc., and sprays and discharges the foaming material 2, for example, a foamable synthetic resin raw material, onto the base material 3. The soil is made up of an endless belt mechanism, a trochanter type ■, heaters 20 to 23, and a cover 24 in a curing oven.The foamed material 2 is formed into a predetermined shape, and the original shape is also deformed by cutting and conveying. It is intended to be sent out with a hardness that will not cause it. To explain further, the endless belt mechanism i consists of upper and lower endless belts 6.7 (hereinafter simply referred to as belts) that move in the same direction while pressing and molding the foam material, and a drive wheel 8.9 that engages these belts. It is composed of a driven wheel 1o, 1), and an auxiliary wheel 13, 14 that supports the belt in the area between the driven and driven wheels so as to form a predetermined gap, a so-called shape 12. In particular, the endless belt mechanism i is formed until the foaming material 2 reacts and foams to fill the inside of the mold 12 until the foaming pressure reaches its maximum and begins to decrease. This is because the shape of the foamed material 2 discharged onto the base material 3 is almost fixed, and the adhesion between the base material 3 and the backing material to be described later is almost completed. In other words, the pressure on the endless belt mechanism is limited to this area A, and the adhesion between the base material 3 and the like and the foamed material 2 is determined in this area. Moreover,
In this area A, a flat belt 6 is used to bond the foam material 2, base material 3, and back surface material during reaction and foaming under favorable conditions.
．． This is due to the fact that it is necessary to transport the board in a stable state without rubbing the board while the foam material 2 is still soft. In addition, the auxiliary rollers 13 and 14 are connected to the belt 6.
．． This is to prevent belts 6 and 7 from deforming due to foaming pressure, and to ensure smooth movement of belts 6 and 7 and to maintain a constant gap in mold 12. Further, the trochanter mold side consists of an upper roller group 16 and a lower roller group 17, and the vertical distance T between the rollers 18 and 19 is equal to the distance between the upper and lower mold members of the mold 12, so-called belts 6 and 7. They are arranged at the same intervals and on an extension line of the mold 12. Further, the rollers 18 and 19 are arranged in a direction in which the rollers 18 and 19 are arranged in such a manner that the pitch becomes coarser as the distance from the outlet on the endless belt mechanism increases. To explain further, for the trochanter type, the composite plate sent out from the endless belt mechanism, especially the foam material 2, has already been formed into a predetermined shape and the foaming pressure has begun to decrease, but the foam structure is still soft and in the process of curing. Foam material 2
This is because the foamed material 2 is sent out from the exit of the cure oven 3 in an apparently cured state, and the foamed material 2 is fixed as a core material between the base material 3 and the back material without peeling off. belongs to. Moreover, the trochanter mold (2) does not rub the foamed material 2 during transportation, and can be used as a mold to transport the foam while regulating its thickness. Note that the rollers 18.19 have a free roller structure, or drive the upper and lower roller groups 16.17, or drive the lower roller group 17 of the roller groups 16.17.
The upper roller group 16 is used as a free roller, and when driving both or one of the roller groups 16 and 17, the speed is the same as that on the endless belt mechanism. The heaters 20 to 23 described above heat the endless belt mechanism i and the trochanter type to about 30 to 1) 0°C to promote the reaction and foaming of the foaming material 2 and perform necessary curing, and This homogenizes the reaction system and foam structure of the foam material 2, which is a temperature-sensitive chemical reactant. Note that when it is not necessary to install all of the heaters 20 to 23, the heater 2L 23 can be installed to effectively utilize thermal efficiency. Furthermore, the cover 24 functions to effectively utilize raw heat from the cure oven without releasing it to the outside air, and to exhaust combustion gas to the outside of the factory.

Note that an opening through which a composite plate or the like passes is provided at the outlet and inlet of the cure oven soil. Reference numeral 25 denotes a backing material, which is made of one or two layers of paper, thin metal, metal plate, etc., and is guided onto the base material 3 via a guide roller 26 and sent to the cured open ball. It is something that is provided.

27 is a conveyor for feeding the base material 3 to the cure oven ↓. Reference numeral 28 is a running power lid for cutting the composite strip sent out from the raw outlet of the cure oven into regular lengths, and 29 is for sending the boards cut into regular lengths by a delivery machine to the next process.

Next, the operation of the foam material molding apparatus according to the present invention will be explained. Assume now that boards as shown in FIG. 2 are manufactured continuously using the apparatus shown in FIG. First, the foam material 2 is a raw material for polyurethane foam, the base material 3 is a metal plate shaped like a gutter, the back material 25 is aluminum asbestos paper, and the ambient temperature in the cure oven is 90°C.
Endless belt mechanism 1) Trochanter type long p rotation speed 30+
A base material 3 shaped like a board S having a sand inch structure and having a thickness of 15 m is continuously transported in the direction of arrow A by a transporting machine 27. When the base material 3 arrives directly below the foam material feeder 1, the foam material 2, a so-called unfoamed raw material for polyurethane foam, is mixed by a conventional method and discharged onto the base material 3. The discharged raw material exhibits the behavior in region B in FIG. That is, FIG. 4 shows the base material 3
This is a measurement on the center line of When the material 3 reaches the position of the guide roller 26, the backing material 25 is guided onto the base material 3, laminated on the raw material that is being foamed, and sent to the mold 12. Then, the foam material 2 rapidly foams between the two members as shown in FIG. 5, and the foaming pressure increases accordingly. The gap between the backing materials 25 is filled with the foam material 2 as shown in FIG. do. In addition, the foaming material 2 was filled into the void formed by the base material 3 and the backing material 25 at 100% of the amount used for the 35 kg/rd foam, and the maximum foaming pressure at that time was 180 g/c+J. there were. This state is shown in the area A in FIG. 4. In addition, in this area A, the adhesiveness, foaming height, and filling state of the foamed material 2 are almost determined, so the foamed material 2 in the middle of reaction and foaming is transported without being rubbed. It has stronger adhesion, does not peel off from the base material 3 and back material 25, and can be transported smoothly without cracking in the foamed structure. Next, type 12 of the endless belt mechanism worker
The board sent out from the outlet is conveyed in the direction of the arrow by a trochanter-type board whose height and conveyance direction are only regulated. In this case for the trochanter type, when the foam material 2 is cured and sent out to the outside air from the outlet of the cure oven, the foam structure is hardened to the extent that it can withstand transportation and transportation. Of course, the height regulating roller is a preliminary one, but it is more effective mainly in moving the board S smoothly within the mold without displacing it. The behavior of the foamed material 2 during movement in the trochanteric mold is shown in the region C of FIG. Next, the continuous band-shaped board S that has come out of the trochanter mold is cut into regular lengths by a traveling cutter 28, fed to a secondary forming machine (not shown) via a feeder 29, and then placed at the center of the double width. The board is then cut and tongues are formed at the ends to form a board as shown in FIG.

(Effects of the Invention) As described above, according to the foamed material molding device of the present invention, the molding device is adapted to the reaction and foaming characteristics of the foamed material. It has the characteristics that the price is about 〃, it can be formed compactly, and the energy consumption is reduced by about 10 to 30% compared to the conventional one. In addition, the board manufactured by the apparatus according to the present invention has no peeling between the foam material, the base material, and the back material, and the foam structure is the same as in the past when the entire mold was manufactured using an endless belt mechanism. There are features that allow it.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an example of a foam material molding device according to the present invention, FIG. 2 is a perspective view showing an example of a board manufactured by the above device, and FIG. 3 is a perspective view showing an example of a base material. , 4th
The figure shows the behavior of the foam material in the curing oven.
5 and 6 are cross-sectional views taken along the α-α line and the β-β line in FIG. 1. 1... Foaming material feeder, 3... Base material, ↓... Cure oven, 5... Endless belt mechanism 1, Trowel...
Trochanteric type.

Claims (1)

[Claims] (1) In a device that continuously molds a synthetic resin foam raw material into a predetermined shape, the raw material is discharged and then reacted and foamed, with a certain parallel gap between the areas where the foaming pressure is maximum, and the same horizontal An apparatus for molding a foamed material, characterized in that an endless belt mechanism that moves in the direction is provided, and a trochanter type consisting of a large number of rollers arranged vertically so as to extend the parallel gap is provided behind the mechanism. .