JPH0517012B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a continuous manufacturing apparatus for framed heat insulating panels such as interior wall panels used for the interior walls of houses.

(Prior art) Conventionally, this type of framed insulation panel has been produced by manufacturing the panel frame and the insulation material in separate processes, and then cutting the insulation material and fitting it into the panel frame. (Hereinafter referred to as the first conventional example).

In addition, as described in Special Publication No. 49-32257,
A frame body is interposed between the front plate and the back plate, the interior of which is partitioned by a partition bar in which a synthetic resin foam material distribution hole is bored, and a synthetic resin material is supplied into the compartment partitioned by the partition bar, A method for manufacturing a sandwich decorative structure characterized by foaming and curing is known (hereinafter referred to as a second conventional example).

Furthermore, as stated in the Japanese Patent Publication No. 55-16813,
consisting of a means for horizontally feeding two continuous sheets forming the surface layer of the laminated panel, a means for feeding a liquid phase synthetic material between the continuous sheets forming the panel core, and the continuous sheet and the synthetic material. A preforming device works with the laminated panel to spread the liquid phase synthetic material and preliminarily determines the thickness of the laminated panel, and a preforming device extends from near the exit of the preforming device and holds the laminated panel from above and below the operating surface. When it is conveyed, it has a finish forming device that includes an endless upper and lower conveyor belt, and a flexible holding plate with a mesh structure that deforms in all directions is placed on the upper surface of the upper conveyor belt, and its upstream end is fixed. A continuous manufacturing apparatus for laminated panels having a core made of a synthetic material is characterized in that a pressing force is applied to the upper surface of the upper conveyor belt to prevent the formation of gas pockets or wrinkles in the synthetic material and the top sheet. (hereinafter referred to as the third conventional example).

(Problems to be Solved by the Invention) However, the first conventional example requires the work of cutting the heat insulating material to match the dimensions of the panel frame and the work of fitting and fixing the heat insulating material into the panel frame. This increases the number of work steps and reduces productivity.
In particular, when cutting the heat insulating material, it is necessary to cut the heat insulating material at appropriate intervals in the length direction and to cut edges at both ends in the width direction, which is extremely troublesome. Furthermore, since it is not always possible to cut the heat insulating material to appropriate dimensions, a slight gap is created between the heat insulating material and the frame. This reduces the insulation performance of the panel. It is known that even if there is a gap of just 2 mm, the insulation performance will be reduced by 15% compared to when there is no gap. Furthermore, since the insulation material is manufactured separately from the frame,
It is not possible to accurately determine the thickness of the insulation material. In other words, when trying to obtain a heat insulating material by curing uncured foamed resin, pressure cannot be applied to the uncured resin, so the thickness becomes inaccurate and the air bubbles (also known as cells) in the heat insulating material become inaccurate. ) tends to be uneven, resulting in uneven strength of the insulation material. In other words, in the method of manufacturing the insulation material separately from the frame, the resin is foamed without any spatial restraint and then cured as it is, so the bubbles are not uniform and become non-uniform. It is. Furthermore,
When producing insulation materials, sheet materials are attached to the top and bottom surfaces of the insulation material, but when the resin is cured, the moisture generated by the reaction causes the top and bottom surfaces to become wet and expand, and then shrink at drying temperatures, so this is left as is and the top and bottom surfaces are pasted. When pressure was applied using a flatter plate, there were various drawbacks such as wrinkles in the sheet material and poor appearance.

In the second conventional example, a synthetic resin foam material is filled into the inside of a sanderch decorative structure, and the frame body is closed with a front plate and a back plate such as plywood, and the synthetic resin foam material is supplied inside the frame. Each piece was foamed by hot pressing.

Therefore, this conventional example is not suitable for mass production, and is not suitable for manufacturing a large amount of panels required for prefabricated houses and the like.

The third conventional example is an apparatus that continuously forms sheet-like laminated panels. A flexible presser plate with a mesh structure applies pressing force to the synthetic material and the top sheet to prevent the formation of gas pockets and wrinkles. However, since pressing force is applied to the synthetic material only from one direction, wrinkles occur on the lower surface sheet, and uniform foaming is not formed on the stock side of the synthetic material.

Since this conventional example continuously manufactures relatively thin sheet-like laminated panels, such pressing force may only be applied in one direction. However, in the case where a foamed resin material is injected into the frame to form a relatively thick heat insulating material in the frame as in the present invention, if a uniform pressing force is not applied from above and below, the heat insulating material will not be uniform. There were problems in that air bubbles were not formed and large cavities were formed inside, and the kraft paper on the bottom surface was wrinkled.

Furthermore, since the presser plate of the second conventional example is disposed between the upper and lower endless belts, the structure of the apparatus is complicated and maintenance is also difficult. This is an important problem, but in this second conventional example, it was necessary to perform preforming to form a thin sheet-like panel. This preforming is necessary because the resin is not foamed within the frame as in the present invention.

The present invention provides an apparatus for continuously manufacturing framed heat insulating panels that can eliminate each of these various drawbacks one by one.

(Example) An example of the present invention will be described below based on the drawings.

As shown in Fig. 1, the continuous manufacturing apparatus for framed heat insulating panels is such that the panel frames 1 are conveyed along a conveyance path (not shown) in the direction a, and the bottom surface of the panel frames is continuously fed. A gluing roller 13 for gluing, a lower kraft paper adhering section 3 for adhering the kraft paper 2 to the lower surface of the panel frame 1, and a foamed resin injected into the panel frame 1 to which the kraft paper 2 is affixed. An injection tool 4, an attachment part 6 for attaching kraft paper 5 to the upper surface of the panel frame 1 into which foamed resin material has been injected, and upper and lower kraft papers 2, 5 attached and attached to the panel frame 1.
, a plurality of upper and lower rolls 7 . . . , 8 . . . which apply a squeezing action to the foamed resin material inside the panel frame 1 , and double conveyors 9 , 9 made up of endless belts for the panel frame 1 subjected to the squeezing action. and a hardening accelerator 10 that hardens the foamed resin material placed inside the panel frame 1 by pressurizing and heating it while conveying it while sandwiching it from above and below.

As shown in FIG. 2, the panel frame 1 is constructed by joining wooden horizontal bars 12 between vertical wooden bars 11, 11.

A gluing roller 13 is provided for gluing the lower surface of the panel frame body continuously sent to the conveyance path.

The kraft paper pasting section 3 consists of a presser roller 15 that presses the lower kraft paper 2 continuously fed out by a roller 14 onto the lower surface of the panel frame 1 to which glue has been applied. Foamed resin injection tool 4
is slightly inclined toward the transport method a of the panel frame 1. As the foamed resin material injected into the panel frame 1 from the injection tool 4, phenol resin or the like is used. This foamed resin material is used for the panel frame 11.
When the foam is sequentially injected into the interior of the panel frame 1, the foam is decompressed and foamed, and the foam expands to the full extent inside the panel frame 1. The foamed resin material is intermittently and sequentially injected into the frame 1a surrounded by the vertical bars 11 and horizontal bars 12 of the panel frame 1. Of course, it may be injected into the entire frame 1a, but it may also be injected into only a part of the frame 1a to cause foaming.

It is preferable that the injection positions be placed at several locations near the respective ends of the frame 1a, either in the center or evenly divided to the left and right. The attachment section 6 is provided with a press roller 16 that continuously feeds out the upper kraft paper 5 wound into a roll and presses it against the upper surface of the panel frame 1. The upper surface of the panel frame 1 can also be glued using a gluing roller in the same manner as the lower surface described above.
However, since the upper kraft paper 5 adheres to the resin foaming within the panel frame 1, gluing is not necessarily required.

The upper and lower rolls 7..., 8... have a plurality of free rotating or driving rollers arranged in parallel, and each roller 7...
..., 8... are arranged in close contact with the upper and lower surfaces of the panel frame 1. Each of the rollers 7..., 8... may be directly supported on the machine frame (not shown), but it is also possible to use, for example, a pressure spring interposed therebetween so as to always apply an appropriate pressure force to the panel frame 1. . When the panel frame 1 passes between these upper and lower rolls 7..., 8..., which are arranged in parallel vertically, the panel frame 1
Top and bottom kraft paper attached or pasted 2,5
and the foamed resin material within the panel frame 1 are subjected to a squeezing action by the upper and lower rolls 7..., 8....
This squeezing action smoothes out the wrinkles in the upper and lower kraft papers, and also allows the foamed resin material to be compressed to the corners of the panel frame 1 quickly, and the air bubbles in the foamed resin to be made uniform.

The entire curing accelerator 10 is covered with a case, and hot air generated by a hot air generator 18 is introduced into the case from a part of the case. This hot air accelerates the curing of the foamed resin material within the panel frame 1. Moreover, at this time, the panel frame 1 is pressurized by being sandwiched from above and below by double conveyors 9, 9 consisting of endless belts, so the thickness of the insulation material is maintained constant even during conveyance and curing. dripping Furthermore, the length of the double conveyor 9,9 is approx.
It is 15 meters long, and the passage time is set to about 2 minutes so that the foamed resin material hardens while passing through it. After passing through the hardening accelerator 10, the upper and lower kraft papers are cut to obtain a framed heat insulating panel. Figures 3 and 4 show panels manufactured by this method. 1 in the diagram
9 is a heat insulating material, and 20 is a glue.

(Effects of the Invention) As explained above, according to the apparatus for continuously manufacturing framed insulation panels according to the present invention, the upper and lower kraft papers are pasted with glue on the upper and lower surfaces of the panel frame while the panel frame is being transported. A foamed resin material is injected into the panel frame and foamed, giving a squeezing effect to the upper and lower kraft papers to smooth out wrinkles and equalize air bubbles in the upper and lower kraft papers. It is possible to carry out a series of manufacturing operations such as pressurizing and curing. Since uncured foamed resin material is injected into the panel frame and foamed therein, the foamed resin material and the upper and lower kraft papers attached to the upper and lower surfaces can be rubbed from above and below. There is no gap between the insulation material and the panel frame, demonstrating excellent insulation performance, and the air bubbles are uniform, making it possible to manufacture panels with increased strength of the insulation material. Also, the upper and lower kraft papers attached to the top surface will not wrinkle. Furthermore, after applying a straining action to the panel frame, it is sandwiched by a double conveyor and heated while being pressurized during transportation, making it possible to accurately measure the thickness of the insulation material, thereby making the strength of the insulation material uniform. . In addition, since the panel can be manufactured in a series of continuous steps, there are many other advantages such as less space required for manufacturing the panel.

In addition, since the foamed resin material is injected into the frame, no preforming equipment is required, and the upper and lower rolls are provided separately from the double conveyor, and the upper and lower rolls provide a squeezing effect before placing the panel frame into the double conveyor. . Therefore, the manufacturing process is simple, the equipment is simplified, and maintenance etc. are also very convenient.

In the continuous production apparatus for framed heat insulating panels of the present invention, the lower kraft paper is glued and adhered to the lower surface of the panel frame. Therefore, the insulation under the kraft paper is securely retained within the panel frame.

[Brief explanation of drawings]

Fig. 1 is an overall side view showing an embodiment of a continuous manufacturing apparatus for framed heat insulating panels according to the present invention, Fig. 2 is a perspective view of a panel frame body, and Fig. 3 is a diagram showing an example of a frame-insulating panel manufactured by the method of the present invention. FIG. 4 is a perspective view of the panel, and FIG. 4 is a sectional view of the same panel. 1...Panel frame, 3...Lower kraft paper on the bottom surface, 2...Adhesive section, 4...Injection tool, 5...Adhesive section, 6...Top kraft paper on the top surface, 7, 8...Top and bottom Roll, 15, 16...Double conveyor, 9...
...hardening accelerating part.

Claims (1)

[Claims] 1. A gluing roller that glues glue to the bottom surface of the panel frame body that is continuously fed along the conveyance path, a pasting section that sticks the bottom kraft paper that is continuously fed out to the bottom surface of the panel frame body, and An injection tool that sequentially injects foamed resin material into the panel frame to which the lower kraft paper is attached, and an attachment unit that attaches the upper kraft paper that is continuously fed out onto the top surface of the panel frame into which the foamed resin material has been injected. A double roll is made up of a plurality of upper and lower rolls that apply a squeezing effect to this foamed resin injected panel frame to which the upper and lower kraft paper is pasted and affixed, and the panel frame that has been subjected to the squeezing effect with a space between the top and bottom. Continuously feed the panel frame between the conveyors and pressurize it while conveying the panel frame sandwiched between the double conveyors.
A continuous manufacturing apparatus for framed heat insulating panels, characterized in that it is provided with a hardening accelerating section that heats and hardens the foamed resin material inside the panel frame.