JPS6039006B2 - Filler injection method for architectural panels - Google Patents

Description

[Detailed description of the invention] This invention is carried out when filling a building panel by injecting and foaming a filler such as urethane resin into the interior in order to improve the heat insulation and sound insulation properties. The present invention relates to a filler injection method.

Conventionally, in order to inject a filler into the interior of a construction panel, a pipe-shaped injection nozzle of a filler injection device is inserted through an injection hole provided on one side of the panel, and the injection nozzle is inserted through a closed nozzle at the tip of the injection nozzle. This is done by squirting out a mixed solution of filler stock solution and foaming accelerator.

However, in this case, as a result of the mixed liquid being injected only forward in the insertion direction of the injection nozzle, the distribution of the mixed liquid will be concentrated on the other side of the panel when the injection is completed, and there will be no one side with the injection hole. Foaming begins rapidly on the other side of the panel, and the foamed filler is swept away on one side of the panel. In a foamed structure due to such unbalanced injection, the cell density of the filler differs considerably between one side of the panel and the other side, making it impossible to obtain uniform heat insulation, soundproofing, etc. In addition, since architectural panels come in various lengths, when injecting filler, it is necessary to adjust the position of the injection nozzle tip according to the length of the panel, and accordingly adjust the jetting speed of the mixed liquid. However, these tasks were extremely troublesome. This invention was developed based on the above-mentioned circumstances, and its purpose is to provide a method for injecting a filler into architectural panels that does not require uniformity of the cell density of the filler and adjustment of the tip position of the injection nozzle. It is in.

Hereinafter, a case will be described in which an embodiment of the present invention is applied to injecting a filler into a shutter shown in FIGS. 1 to 3.

First, let me explain the structure of shutters as architectural panels.
These are upper and lower horizontal frames 1 and 2 made of extruded material such as aluminum alloy.
A frame obtained by roughening the left and right vertical frames 3 and 4 by inserting the ends of the vertical frames 3 and 4 and screwing self-tapping screws 5 into the tapping holes la and 2a of the upper and lower horizontal frames 1 and 2. Plate bodies 8 and 9, which are formed by bending reinforcing and gripping grooves 6 or 7 on colored steel plates, are attached to both the front and back sides of the body, respectively, and these frames are attached to the panel space formed by the plate bodies 8 and 9. , is filled with a filler 10 made of a foamed material such as hard urethane that adheres the frame body and the plate members 8 and 9 to each other.

In addition, in this shutter structure, the upper and lower green ends of the plates 8 and 9 fit between the steel flanges b and 2b of the upper and lower horizontal frames 1 and 2, respectively, and the left and right side edges are connected to the left and right vertical frames 3 and 2, respectively. 4, and hooking flanges 8a, 9a bent on the left and right side edges are fixed to the fixing protrusions 3b, 4b of the left and right vertical frames 3, 4. . Since this shutter is approximately divided into two in the width direction by the handle groove 7, the filling material 10 is filled into two elongated panel spaces divided by the handle groove 7, and these two panel spaces are filled with the filling material 10. For example, a pair of injection holes 11, 11 are provided in the upper horizontal frame 1, facing one end of the panel space.

The filler 10' is filled into the panel space through an injection nozzle 12 of a filler injection device that is inserted into the panel space from these injection holes 1 in a removable manner. For example, a structure in which a pair of ejection holes 12a, 12a are formed facing each other in the opposite direction on the circumferential surface of the distal end thereof is used. Next, the case of injecting a filler into a panel space will be explained with reference to FIG. 3, where A represents one panel space in the shutter. The injection nozzle tip 12 is connected to the panel space A from the injection hole 11.
It is inserted into the panel space A, and is set so that its tip is disposed at the intersection of the approximate center in the width direction and the approximate center in the length direction of the panel space A, that is, at the approximate center position of the panel space A. In this case, since the substantially central position in the width direction is preset by the injection hole 11, it can be easily set by providing a stopper or an indicator on the injection nozzle as appropriate depending on the length of the shutter.
Of course, this work is carried out with the shutter set in a hot press device (not shown), and it goes without saying that the shutter is set so that the handle groove 6 does not interfere with foaming, etc. Therefore, the injection nozzles 12a, 12a
is opposed to either the vertical frame 3 or 4 or the handle groove 7, so as the filler injection device operates, the filler stock solution such as liquid hard urethane resin and the foaming accelerator are mixed in the middle of the injection nozzle 12. The mixed liquid is jetted into the panel space A from the jetting holes 12a, 12a in a direction perpendicular to the direction along which the injection nozzle 12 is inserted. Therefore, the mixed liquid will be swept away along either the vertical frames 3 or 4 or the handle groove 7 as shown by the dotted line arrow B in FIG. It is injected along the center in the horizontal direction. Therefore, in the subsequent foaming, the filler flows toward the center of the panel space A in the width direction and fills the panel space. In this way, since the mixed liquid is injected in multiple directions and dispersedly injected into the panel space A, it is possible to prevent the foaming of the filler 10 from being unevenly distributed and to make the foaming density uniform. Can be done. In addition, the injection nozzle 12 can be arranged so that its tip is located approximately in the center of the panel space regardless of the size of the shutter, so there is no need for troublesome adjustment operations as in the case of a follower. Note that the present invention is not limited to the above embodiment; for example, the injection nozzle may be inserted from the center of the vertical frame, and
You can also insert it from the center of the board.

In particular, when inserting from the center of the plate, if the injection nozzle 12 is provided with injection holes 12a and 12b facing each frame member or corner at the tip as shown in Fig. 4, the mixed liquid can be further dispersed and injected. At the same time, the entrance width C of the ejection holes 12a and 12b,
By varying D, the injection ratio of the mixed liquid to be dispersed into each part can be adjusted. In addition, this invention is not limited to shutters,
Of course, this method can also be used when injecting filler into architectural panels such as doors and partitions. As explained above, this invention arranges the tip of the injection nozzle approximately in the center of the panel space, and disperses and injects the mixture of the filler stock solution and the foaming promoter into the panel space from the plurality of injection holes. Because of the characteristics, it is possible to make the foaming density of the filler material uniform, and there are effects such as not requiring troublesome adjustment of the injection nozzle tip position during injection.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the shutter, Fig. 2 is a cross-sectional plan view of the shutter, Fig. 3 is an explanatory diagram showing an injection method according to an embodiment of the invention, and Fig. 4 is another embodiment of the invention. It is an explanatory view showing an injection method concerning an example. 1... Architectural panel (storm shutter), 10... Filling material, 11.
...Injection hole, 12...Injection nozzle, 12a, 12
b...Blowout hole. Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. The tip of the injection nozzle is inserted into the approximate center of the architectural panel space where the filler is to be injected, and the filler stock solution and its foaming accelerator are injected through the plurality of ejection holes opened on the circumference of the nozzle tip. A method for injecting a filler into a construction panel, the method comprising: spouting a mixed solution of the above to inject the filler into the space.