JPS5821720Y2 - Manufacturing equipment for composite materials with a synthetic resin foam layer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus for continuously producing a composite material in which a hard surface material and a foamed synthetic resin layer are integrally laminated together.

The resin raw material for the foam layer is supplied onto a hard surface material such as a metal plate, hard synthetic resin plate, asbestos cement plate, etc., and then sent to a mold formed between endless mold members arranged vertically facing each other. It is well known to produce composite materials in the form of plates suitable for external walls, linings, roofs, etc. of buildings by forming a foam layer of a predetermined thickness therein.

In this case, if a flat plate-shaped endless band made of rubber, synthetic resin, cloth, or metal is used to form a mold member that also serves as a conveyor and a relatively thin flat composite material is manufactured, as the resin raw material expands and expands, the lateral There is a strong tendency for the foam layer to expand and protrude irregularly on the sides of the composite.

In order to eliminate this inconvenience and to obtain a homogeneously foamed product, it is common practice to place endless restraining members on both left and right sides and to perform foaming in a mold with the surrounding four sides closed.

Conventionally, the restraining member, which has a height almost equal to the distance between the upper and lower mold members, is fixed to the lower mold member, or is moved in one direction at the same speed as the mold member on a horizontal plane on both sides of the mold. It's set up.

In the former configuration, the hard surface material must be fed between the holding members fixed at intervals approximately equal to the width of the hard surface material, but the surface material must be cut to a predetermined product length in advance and successively and accurately positioned. It is extremely difficult to feed the resin material while the mold member is in contact with the mold member, and the leading edge of the presser member hits the mold member, making it impossible to feed the mold member, resulting in the inconvenience that the resin raw material is directly supplied onto the mold member and foams and expands.

In the latter configuration, the lower mold member is extended in front of the entrance of the mold, and at that part, the left and right restraining members overlap the edges of both sides of the lower mold member at a gap wider than a predetermined interval, and the interval gradually narrows toward the mold. By doing this, it is possible to prevent the surface material from hitting the restraining member and stagnation, but when the restraining member is stacked on the lower mold member, the surface material may be pinched, so it is necessary to position it fairly accurately. I have to send it in.

In this case, the holding member is wrapped around the lower mold member without being fixed, the interval is widened while it is reversed and returned to the front of the entrance of the mold, and the interval is gradually returned to the predetermined interval while moving toward the entrance of the mold. This allows the hard surface material to be fed smoothly.

An embodiment of the present invention will be described below with reference to the drawings. Two mold members 1 and 2 are formed of an endless band made of a single thin steel plate generally called a steel belt. A driving wheel 8 is arranged to extend forward, is wound around the reversing wheels 6 and 7 at the entrance side of the mold 5, and is driven by a prime mover (not shown) at the exit side of the mold 5.
, 9 respectively.

Two restraining members 3 and 4 made of endless bands made of synthetic rubber with a height approximately equal to the distance between the upper and lower mold members 1 and 2 and an appropriate width are wrapped around the lower mold member 2 without sticking. Composite material A manufactured in the part forming the mold 5
from the bottom surface of the lower mold member 2 while returning from the driving wheel 9 on the exit side of the mold 5 to the reversing wheel 7 on the entrance side. They are moved apart by guide trochanters 10.11.

Below the lower mold member 2, a plurality of trochanters are arranged between the two restraining members 3 and 4 so that the two restraining members 3 and 4 are in contact with each other and the distance between them gradually increases toward the reversing wheel 7. 1
Expansion mechanism 1 consisting of 2..., 13...
4 is provided, and a mold 5 is provided above the lower mold member 2.
A support mechanism 15 is provided for moving the two restraining members 3 and 4 at an interval equal to the width of the composite material A and for preventing them from being pushed outward by the foaming pressure of the raw material resin.

The support mechanism 15 includes a support frame 18 that independently rotatably supports a plurality of trochanters 16, 17, placed on the outside of the restraining members 3 and 4. , 19...
... are movably supported in the width direction of the mold 5 by the frame 20 of the device, and springs 21 and 22 are applied to each of them, and the springs 21 and 22 cause the trochanters 16..., 1
7... maintains the restraining members 3, 4 at an interval equal to the width of the composite material A.

In this embodiment configured in this way, the hard surface material B of a predetermined length is continuously fed one by one onto the upper surface of the lower mold member 2 by the feeding device 23 consisting of a roller conveyor, and is stacked on the mold member 2. While being reversed by a reversing wheel 7, the holding members 3 and 4 whose spacing is gradually narrowed are used to restrain both side edges so as not to move in the width direction.
The upper and lower mold members 1 and 2 driven by the prime mover, the restraining members 3 and 4 stacked on the upper surfaces of the lower mold member 2, and the surface material B are integrally fed at the same speed.

The liquid resin raw material for forming the foam layer C is supplied onto the surface material A from the supply machine 24, and is then passed through the upper mold member 2 and the holding members 3 on both sides.
Together with the flexible backing material D and the covering materials E and F, which are fed along the angle 4, they are sent to a mold 5 built into the heating chamber 25, where they are foamed and expanded to form a composite with the cross-sectional shape shown in FIG. Material A is delivered from mold 5.

The pressure accompanying the expansion of the foam is received by the two mold members 1 and 2 and the two restraining members 3.4 to mold the composite material A into a predetermined shape. 7
While returning to the support mechanism 15, the gap is widened by the expansion mechanism 14, and from there, the gap is gradually narrowed toward the support mechanism 15, and the mold member 2 is wrapped around the reversing wheel 7 in an overlapping manner.

In addition, the surface material B is not limited to flat plates, but also has rising parts on both sides,
An arbitrary shape having a connecting part can be used,
Further, the holding members 3 and 4 may overlap and contact the lower mold member 2 over the entire length without being separated from each other, and furthermore, the expansion mechanism 14 can adjust the interval between the holding members 3 and 4 to prevent loosening due to elongation. Sometimes I try to get rid of it.

As described above, the present invention arranges endless strip mold members on the top and bottom, and also arranges endless restraining members on both sides between them, thereby forming a mold whose four surrounding surfaces are closed. In a composite material manufacturing device in which a mold member and a restraining member are moved in one direction at a portion and a foam layer is created therein, the restraining members on both sides made of endless bands are extended toward the front of the entrance of the mold. The material is wrapped around the lower mold member without sticking, and while returning to the front of the entrance of the mold, the gap between the restraining members is expanded by the expanding mechanism, and while it is reversed and moved toward the entrance of the mold, it is regulated by the support mechanism. Since the holding member is designed to gradually return to a predetermined spacing, the holding member is wrapped around the reversing wheel in front of the entrance of the mold, overlapping the mold member, and the interval is gradually narrowed, and the holding member is moved toward the mold in the overlapping state. It will be sent.

For this reason, when the hard surface material cut to a predetermined product length is fed onto the mold member below, a holding member whose spacing is gradually narrowed is placed in contact with both sides of the leading edge, and the material is fed toward the mold while being corrected to a predetermined path. At that time, the holding member is overlaid on the mold member and inverted, so there is no inconvenience that the surface material is sandwiched between them.
To continuously manufacture a composite material by feeding the surface material sequentially and smoothly into a mold without stagnation even if the surface material is not accurately positioned and fed, and thereby continuously supplying the subsequent surface material with almost no gaps. becomes possible.

In addition, since the holding member is bent outward by the expansion mechanism on the way back, it is kept in a tensioned state, and the holding member is pushed outward by the foaming expansion pressure of the foam layer in the mold part by its own tension, preventing it from bending. It also has the function of preventing foaming, and has the effect that even if the support mechanism is simplified, it is possible to manufacture a composite material with accurate dimensions and a homogeneous foam layer.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing an embodiment of the present invention, Fig. 2 is a schematic plan view, Fig. 3 is a schematic bottom view, Fig. 4 is an enlarged sectional view taken in the direction of arrow XX in Fig. 1, and Fig. 5 is a composite material. FIG. 1.2... Mold member, 3, 4... Holding member, 7... Reversing wheel, 14... Expanding mechanism, 15... ...Support mechanism.

Claims (1)

[Scope of utility model registration request] The mold members 1, 2 are provided with mold members 1.2 made of endless bands arranged above and below, and restraining members 3, 4 made of endless bands arranged on both sides between them. In a composite material manufacturing apparatus in which a mold 5 whose surrounding four sides are closed by the holding members 3 and 4 is formed, and a foam layer is produced therein, the mold 5 is arranged to extend toward the front of the entrance of the mold 5. An expanding mechanism 14 and a restraining member 3, which allows the restraining members 3 and 4 to be wrapped around the lower mold member 2 without being fixed, and widens the distance between the restraining members 3 and 4 on both sides while returning to the front of the entrance of the mold 5; A manufacturing apparatus for a composite material having a foamed layer of synthetic resin, which is provided with a support mechanism 15 that maintains a predetermined interval between 4 and 4 at a predetermined interval in a mold 5 part.