JPS6141513A - Manufacture of heat insulating panel - Google Patents

Abstract

PURPOSE:To make unrequired the correcting operation of a frame body, by using notched sections of bent pieces of inner and outer plates to carry out insertion and engagement of engaging grooves of first-fourth frame members and the bent pieces, and sliding the frame members. CONSTITUTION:Engaging grooves 15A of a second frame member 11 are inserted through notched sections 14 to be engaged with bent pieces 7A, 8A of inner and outer plates 7, 8 then engaging grooves 15A of a first frame member 10 are inserted through the notched sections 14 to be engaged with the bent pieces 7A, 8A of the inner and outer plates 7, 8, and a third frame member 12 is inserted through the notched sections 14 to engage the engaging sections 15 with the bent pieces 7A, 8A. The third frame member 12 is slid upward for a distance corresponding to the length of a planar section 12A of the engaging sections 15, a fourth frame member 13 is inserted through the notched sections 14 to engage the engaging sections 15 with the bent pieces 7A, 8A, and is attached to the lower sides of the inner and outer plates 7, 8, and after an abutting section 13B and an abutting section of the second frame member 11 are abutted against each other, the third frame member 12 is slid down. A raw liquid of a foamable heat insulating material 9 is injected via an inlet 11C into a space 7B of this panel and is allowed to foam to fill the panel.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method of manufacturing a heat insulating panel constituting a prefabricated cold storage.

(b) The sandwich panel shown in the prior art publication No. 58-87095 is composed of a surrounding frame, panels on both sides, and a foamed heat insulating material filled between these two panels. By fitting and fixing the fixing edge into the fixing groove formed in the surrounding frame, the fixing and locking effect was improved.

(C) Problems to be Solved by the Invention In the above-mentioned conventional technology, in order to fit the fixed edge of the panel edge into the fixing groove of the surrounding frame, it is necessary to form the dimensions of the surrounding frame and the panel edge accurately. There is also a need to fit the fixed edge into the fixed groove while accurately matching the dimensions.
The problem has been that the fitting work is complicated. or,
As the fixed edge is inserted, the tongue extends downward,
A restoring force is generated in the tongue piece due to contraction and acts on the fixed edge, so the fixed edge is pushed back slightly outward, leaving the metal panel in a floating state. If the foaming operation is performed in this state,
Appropriate dimensional accuracy could not be obtained, and therefore new correction work was required before foaming.

(b) Means for solving the problem In a heat insulating panel made by injecting and foaming a foam heat insulating material into the space formed between the inner and outer drawing boards, each peripheral edge is bent inward at a substantially right angle, and an inner and outer drawing board formed with four-sided bent pieces that are bent substantially at right angles and cut out at four corners, and an engaging portion that is parallel to each other on the inner surface and protrudes in the spatial direction;
and a band-shaped first to fourth frame members defining an engagement groove defined by the engagement portion and into which the double bent pieces are inserted and engaged, and among these frame members, disposed on one side of the inner and outer drawing plates. The length of the engaging portion of the third frame member that is
After preparing a frame body having a length shorter than the length of the engaging portion of the frame member and inserting and engaging the first to third frame members into the opposing bent pieces, the third frame member is the fourth frame member from the notch exposed as the third frame member slides into the corresponding double bent piece. After the third frame member is inserted and engaged, the third frame member is slid to a predetermined position and the frame members are butted together to assemble a hollow panel. Production method.

(e) Covering the peripheries of both the inner and outer plates of the functional heat insulating panel with the first to fourth frame members to prevent moisture in the air from entering the foam heat insulating material,
The engaging portions of the first to fourth frame members are inserted and engaged with the bent pieces of both the inner and outer plates, and the peripheral edges of the inner and outer drawing plates are supported from the first to fourth frame member traps, and When attaching the first to fourth frame members to the peripheral edge, the third
The frame member is slid, and finally the fourth frame member is inserted and engaged with the bent piece, the third frame member is returned to the predetermined position, and the first to fourth frame members are inserted and engaged.
The frame members are abutted against each other, the fourth frame member acting as a bar for the third frame member, and the third frame member being in an orthogonal relationship with the third frame member. It acts as a stopper for the fourth frame member.

(F) Example Hereinafter, an example of the present invention will be described in detail based on the drawings.

(1) is a prefabricated cold storage such as a prefabricated refrigerator, which is assembled by connecting and connecting multiple ceiling panels (2), side panels (3), insulation panels (4) that are the foundation side walls (anchor rails), etc. A door (3A) is provided at a suitable location on the side panel (3) to open and close an opening (not shown), and as shown in FIGS. 4 and 5, the lower end of the heat insulating panel (4) is It is fixed to the foundation concrete (5), and on top of this foundation concrete are the floor insulation material (6) and the floor concrete (
6A) is laid out. Here, the heat insulation panel (4) includes both inner and outer panels (7), (8), and a foamed heat insulating material (9) such as rigid polyurethane foam injected and foam-filled into the space (7B) between these inner and outer panels. , each of the first to fourth frame members made by extrusion molding, such as hard vinyl chloride resin, provided on each of the four peripheral sides, a[,0υ,03,(1
It consists of 3. The peripheries of the inner and outer drawing boards (7) and (8) are bent inward at approximately right angles and are further provided with a space (7).
A bent piece (7A) bent and extending at a substantially right angle in the direction of B),
(8A) are formed on the four sides, and the bent pieces (7A), (8A
), that is, both the inner and outer plates (7A) and (8A) located at the four corners of the inner and outer plates (8), are provided with cutout portions a4.

Moreover, on the inner surface of each of the first to fourth frame members Ql-03, there is a space (
7B), forming engaging portions (151, (151) defining engaging grooves (15A), (15A) extending substantially parallel to the bent pieces (7A), (8A). , engagement groove (1
The bent pieces (7A) and (8A) are inserted into the frame members 5A) and (15A), and the respective frame members are attached. Also, the first
A connecting groove (10A) is provided between the engaging portion Q51 and αω of the frame member.
), and a plurality of connecting devices ae each having an outward opening and having either a pin or a hook connecting device (16A) inside are attached to the appropriate locations using fixing devices aη, α7)K such as rivets. Then, this connecting device is buried in the heat insulating material (9). Also, a connecting groove (1oA) is provided at one end of the first frame member 00.
and the engaging part a9 (one is cut out diagonally to form the abutting part (
IOB). In addition, a connecting groove (IIA) is formed in the same amount of the second frame member (11) in the same manner as in the first frame member aω, and the connecting groove (IIA) is opened outward at the appropriate position. The device α0 is attached and buried in the heat insulating material (9), and a connecting groove (11A) and an engaging portion Q51 are provided at both ends of the second frame member I.
．． The α clause is cut out diagonally, and the contact part (I
OB) and the fourth frame member (131, which will be described later, contact portions (IIB), (IIB) are formed.Furthermore, the third frame member a'a engagement portion (IIB) is formed. 151, (
A connecting protrusion (12C') is formed between 151 and 151, and a connecting device (16) that opens outward is attached to the appropriate position. Here, the first frame member aQ of the engaging portion (to) (15)
At the side tip, there is a groove (IOA) for connecting the tip of this first frame member.
In order to slide the third frame member (13 in the vertical direction) while avoiding the engaging portion (151, (Is)
), and in order to avoid the connecting groove (13A) on the fourth frame member side at the other end, an engaging portion (151,
(Form a plane part (12B) where 151 is not formed,
The engaging portion (151, a) of the third frame member α2 is shorter than the engaging portion a1, Q51 of the second frame member αυ facing the singer. Also, the engaging portion (2) of the fourth frame member 0J, ( There is also a connecting groove between 11 (
13A), and one end that is butted against the second frame member αυ has an engaging portion σ, and a contact portion (13B) is formed by cutting out Q59 and the groove (13A) diagonally, and this contact portion (13
B) is butted against the other contact portion (11B) of the second frame member αD. As shown in FIG. 10, the outer surface of the third frame member α2 is formed with a sealing soft resin packing 9, (11) extending from the edge toward the center.
As shown in the figure, sealing members (2) and (2) of the heat insulating material (9) are provided on both the upper and lower parts of the connecting protrusion (1υ).

Next, a method for manufacturing the heat insulating panel C4) will be explained based on FIGS. 8 and 11 to 14.

First, the bent piece (7A) on one short side of the inside and outside drawing boards (7) and (8)
), (8A) and the engagement groove (15A) of the second frame member (11)
, (15A) from the notch α (A), and while engaging the bent pieces (7A), (8A) and the engaging portion (151, α group), insert the second frame member (11). Slide it as shown by the arrow (5), and insert the second frame member (
11) Attach. Note that an opening (IIC) serving as an injection port for the foamed heat insulating material (9) is formed in advance in the second frame member (2). Next, the engaging portions α of the first frame member α0) (15
1) Engagement groove (15A), (15A) with notch (14),
04) to the opposing bent pieces (7A) and (8A) of both the inner and outer plates (7) and (8) as shown by arrow B (slide the engaging parts α9 and α9 to the bent pieces (7A) )4 (8A) to attach the first frame member aO) to the interior and exterior drawing boards (7) and (8), and then insert and engage the first and second frame members (LOT, AUTV)
) Butt the abutting part (IOB) and (11B), then attach the third frame member α3) to the inner and outer drawing boards (force, (8) second frame member Q
(15
1 and the bent pieces (7A) and (8A) and slide them from the notch side as shown by the arrow (Q). Slide the length of part (12A) above Kumon, and as shown in FIG. □, (1
51 and the bent pieces (7A) and (8A), and slide them from the notch (14) in the direction of the arrow (to) to attach them to the lower sides of both the inner and outer plates (7) and (8). Contact part at one end (1
3B) and the other end abutting portion (IIB) of the second frame member 01), slide 31 downward to the third frame member as shown by the arrow (G) in FIG. (151, Q5
The lower end of the third frame member (131) is brought into contact with or close to the connecting groove (13A) of the fourth frame member (131), and the lower end of this third frame member is connected to both the inner and outer plates (131).
7), (8) with the lower side and the road surface -, each of the first to fourth frame members (1 (1) - (1:31) is an annular frame, and a hollow shape that becomes the base of the heat insulating panel (4) The assembly of the panel (21) is completed.

After that, the panel (21) assembled as described above is placed on a jig (not shown), and the space of this panel (7B
), the stock solution of the foam insulation material (9) is injected from the injection port (IIC), and the foam filling is completed, thereby completing the production of the insulation panel (4). Note that the jig is removed after foaming and filling the heat insulating material (9). Further, as shown in FIG. 4, a prefabricated low temperature refrigerator (1) is formed by connecting a plurality of heat insulating panels (4) and connecting side panels (3) etc. thereon.

Therefore, between the bent pieces (7A) and (8A) of the inside and outside drawing boards (7) and (8) of the heat insulating panel (4), the first to fourth frame members α0)
~α3), the bent pieces (7A) and (8A
), it prevents moisture in the air from penetrating into the insulation material (9) between the insulation panels (9), prevents secondary foaming of the insulation material, and prevents dimensional changes in the insulation panels (4). In the event of quality deterioration, the fourth frame member Q3) and the third frame member a2 each act as a stopper for each other, the shape of the frame does not collapse, correction work for the frame is unnecessary, and transportation is facilitated. By assembling the lTEOL C11) in advance, the stock solution of the foamed insulation material (9) can be stocked until it is injected and foamed, and the foamed insulation material (21) can be immediately set on the jig. This allows for the production of heat insulating panels, greatly reducing the production time per panel. In addition, the tr panel (211) internal and external drawing board (7), (8) bent piece (7A),
(8A) G, the first to third frame members (10) to (121) are engaged and slid with the engaging portions α5 and (151), and the engaging portion Qω of the third frame member α2 is formed. By sliding this third frame member upward by the length of the flat surface portion (12A) that is not attached, and sliding the fourth frame member α stage downward, a panel is formed and productivity is improved. I can do it.

(G) Effects of the Invention The present invention is a method of manufacturing a heat insulating panel as described above, in which the engagement grooves of the first to fourth frame members and the bent pieces of the inner and outer picture plates are connected using the notches of the bent pieces. At the same time, the third frame member is inserted and engaged, and the respective frame members are slid, and the fourth frame member is attached by sliding the third frame member using the flat surface portion where the engagement portion is not formed. Furthermore, by sliding the third frame member to a predetermined position, the installation work of each frame member can be easily performed, and the third frame member and the fourth frame member each act as a stopper for each other, The shape of the frame does not collapse, there is no need to modify the frame, and the panel can be boxed until the foam insulation material is filled into the panel, greatly reducing the manufacturing time for each insulation panel.

[Brief explanation of the drawing]

Figures 1 to 14 show an embodiment of the present invention, with Figure 1 being a front view of a heat insulating panel, Figure 2 being a schematic perspective view of an assembled low temperature refrigerator, and Figure 3 connecting multiple heat insulating panels. The top view when connected, Fig. 4 is an assembly state diagram of the prefabricated low temperature refrigerator, and Fig. 5 is the line GG in Fig. 4? %jl vertical sectional view, Figure 6 is a top view of the heat insulating panel, Figure 7 is a vertical sectional view taken along the line F-F in Figure 1, and Figure 8 is an exploded perspective view of the inner and outer drawing boards and the first to fourth frame members. , FIG. 9 is a perspective view of the first frame member, FIG. 10 is a perspective view of the third frame member, and FIGS. 11 to 14 are front views showing the process of attaching the first to fourth frame members to the inner and outer drawing boards. It is a diagram. (1)... Assembly type low temperature refrigerator, (4)... Heat insulation panel, (7), (Death... Interior and exterior drawing board, (7A), (8A)
)...Folded piece, (9)...Foam insulation material, (10
) to (131...first to fourth frame members, (10A),
(nA), (1 3A)...Connection groove, (12C
)...Connection protrusion, (IOB), (nB), (1
3B)...Abutting part, (12A)...Flat part, α(
b)...notch part, (151...engaging part, (15A
)...Engagement groove, (10...Connection device. Applicant Sanyo Electric Co., Ltd., 1st representative, Akito, Patent attorney Shizuka Sano, Fudate 20 30 Figure 4

Claims (1)

[Claims] 1. In a heat insulating panel formed by injecting and foaming a foam heat insulating material into the space formed between the inner and outer plates, each peripheral edge is bent inward at a substantially right angle, and then further bent at a substantially right angle in the direction of the space. Both the inner and outer plates each have a four-sided bent piece with four corners cut out, an engaging portion on the inner surface that is parallel to each other and protrudes in the spatial direction, and the double-folded plate defined by the engaging portion. It consists of band-shaped first to fourth frame members forming engagement grooves into which the curved pieces are inserted and engaged, and of these frame members, the engagement portion of the third frame member is disposed on one side of both the inner and outer plates. preparing a frame whose length is shorter than the length of the engaging portion of the opposing second frame member, and inserting and engaging the first to third frame members into the opposing double folded pieces; After that, the third frame member is slid in one direction so that one end thereof is outward from the first frame member, and the fourth frame member is removed from the notch exposed as the third frame member slides. are inserted into and engaged with the corresponding bent pieces, and then the third frame member is slid to a predetermined position and the frame members are butted together to assemble a hollow panel, and then foam is formed in the space inside the panel. A method for manufacturing a heat insulating panel filled with heat insulating material.