JP2902558B2 - Adhesive application nozzle in thermal insulation panel manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle for applying an adhesive in an apparatus for manufacturing an insulated fireproof panel, and more particularly, to apply an adhesive in a planar manner to opposing surfaces of upper and lower metal shells continuously supplied. However, even if the surface of the adhesive is leveled, even if using a coating nozzle with a large number of nozzle holes, it is possible to easily apply a planar coating and change the thickness of the adhesive easily. It is related.

[0002]

2. Description of the Related Art Conventionally, in an adhesive application nozzle in an apparatus for manufacturing an insulated fire-resistant panel, an adhesive is applied to opposing surfaces of upper and lower metal skins which are continuously supplied. A roll coater that disposes a plurality of rolls, or a coating nozzle that is long in a direction substantially perpendicular to the direction of transport of the metal skin, and nozzle holes are formed in the coating nozzle at small intervals in the length direction. There is a flow coater or the like in which a large number of pieces are formed, and long slit-shaped nozzle holes are formed in an application nozzle, and an adhesive is ejected from these nozzle holes to apply the adhesive to the upper surface of the metal outer cover.

[0003]

In the case of the roll coater, a pair of opposing coating rolls and a receiving roll disposed below the metal jacket are required.
The configuration is complicated, and in the case of using a roll coater, roll transfer is performed, and transfer failure is likely to occur due to curing of an adhesive or the like, and it has been difficult to apply for a long time. In the bead coating in which the adhesive is ejected from the nozzle hole of the circular hole to perform the application, the adhesive ejected from each nozzle hole is applied in a streak shape, and the adhesive is applied to the metal outer surface in a planar manner. This makes it difficult to level the surface in a planar manner. Further, in a flow coater in which a band is applied from a slit-shaped nozzle hole, an adhesive can be applied in a planar shape, but leveling of the upper surface of the adhesive cannot be performed.
In addition, the adhesive cannot be applied to the lower surface of the upper metal skin.

By the way, in the case of applying a glue in a streak shape to a building material, such as a roof material or a wall material, which is lined with a heat insulating material on a metal skin via an adhesive, the building material is piled up outdoors. Then, dew condensation water or the like intrudes into the gap between the adjacent streaky adhesives, and the heat insulating material and the metal outer skin are separated or the heat insulating material is deteriorated. The present invention has been made in view of such a problem, and an object of the present invention is to apply an adhesive to a metal outer skin in a planar manner, and to uniformly satisfactorily equalize the upper surface of the applied adhesive. Leveling, even if
While using an application nozzle having a large number of circular nozzle holes, it is possible to apply the adhesive to the metal outer skin with a substantially uniform thickness, and in particular, to avoid dripping of the adhesive, and to prevent An object of the present invention is to provide an adhesive application nozzle in an apparatus for manufacturing an insulated fireproof panel in which an adhesive can be applied to the lower surface of the outer skin from below, and the thickness of the adhesive can be easily changed.

[0005]

According to the first aspect of the present invention, the upper and lower metal shells a and b are continuously supplied with a vertical gap therebetween, and are provided on the lower surface of the upper metal shell a and the upper surface of the lower metal shell b. An adhesive is applied, and the heat-insulating refractory core material 12 is loaded between the upper and lower metal sheaths a and b, and the metal sheaths a and b are pressed and adhered to the upper and lower surfaces of the heat-insulating refractory core material 12, and thereafter, a predetermined number of times. An adhesive application nozzle in an apparatus for manufacturing an insulated fire-resistant panel that is cut into lengths, wherein the application nozzle 2 is formed with a long application roll portion 2a having a substantially semicircular cross section, and a top portion of the application roll portion 2a. Nozzle holes 3 for ejecting the adhesive are formed, and the arcuate outer surfaces on both sides along the circumferential direction of the nozzle holes 3 of the application roll portion 2a equalize the adhesive applied to the metal skins a and b to apply the adhesive. The leveling portion 23 is applied to the metal skins a and b in a planar manner. It is characterized in.

According to a second aspect of the present invention, the nozzle holes 3 are circular holes, and a large number of the nozzle holes 3 are formed at appropriate intervals in the length direction of the coating nozzle 2.

[0007]

According to the first aspect, when the application nozzle 2 is disposed close to the metal sheaths a and b at an appropriate interval, the adhesive ejected from the nozzle hole 3 in the gap d is used. In the roll-shaped leveling section 23 formed in the application roll section 2a, the metal outer layers a and b are applied in a planar manner and at a thickness corresponding to the gap d. That is, the adhesive ejected like a flow coater is applied to the roll-shaped leveling portion 23.
Performs a function like a roll coater leveling. Moreover,
When the adhesive is applied to the metal outer skins a and b in such a gap d in a planar manner, the adhesive is prevented from falling off, and the lower surface of the upper metal outer shell a being conveyed is placed under the lower surface. From
Then, it is also applied to the upper surface of the lower metal sheath b from above.

According to the second aspect, the nozzle holes 3 are circular holes, and a large number of the nozzle holes 3 are formed at appropriate intervals in a direction substantially perpendicular to the direction of transport of the metal outer shells a and b. When the application nozzle 2 forms a predetermined gap d with respect to a and b, the applied adhesive is compressed, the adhesive from the nozzle holes 3 of adjacent circular holes is connected, and the adhesive is Apply evenly.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIGS. 2 and 5 are explanatory diagrams of a production line for the heat-insulating fireproof panel A. The upper metal shell a supplied from the supply device 4 is formed by the first molding machine 5 and supplied from the supply device 6. The lower metal shell b is formed by a second forming machine 7, and an adhesive coating device 8,
At 8 an adhesive is applied to the metal shells a and b, and a preformed inorganic material 9 such as calcium silicate is inserted into the line and a preformed inorganic material such as rock wool. The fiber material 10 is inserted into the line, and in a double conveyor device 11 having upper and lower forming conveyors, the metal outer shells a and b are formed and mounted so as to fit from above and below the heat insulating refractory core material 12, and
In the cutting section 13, the panel is cut to a predetermined length so that the heat-insulated fireproof panel A can be continuously produced.

In the adhesive application device 8, the application nozzle 2 is disposed on the lower surface of the upper metal cover a and on the upper surface of the lower metal cover b. These coating nozzles 2 are connected to a base 15 via a spring 14 and held by a cylinder 16 so as to be able to move up and down. That is, the application nozzle 2 is moved up and down with respect to the base 15 via the spring 14 by the expansion and contraction of the cylinder 16, and the vertical position can be slightly changed by the expansion and contraction of the spring 14 at the elevating position. It is. As described above, the coating nozzle 2 is retracted from the metal sheaths a and b under the pressure of the adhesive ejected by the coating nozzle 2 to form the gap d, and the coating nozzle 2 is held in this state. As a general term, the design can be variously changed. The surface of the application nozzle 2 is formed in an arc shape, and a leveling portion 23 such as a roll surface is formed.

As shown in FIG. 6, pressurized air is blown into a drum can 18 filled with an adhesive, and the adhesive is applied to the application nozzle 2 through a pump unit 19 via a hose 21 equipped with a heater 20 by using the pressurized air. It is intended to be supplied. The application nozzle 2 can be connected and lengthened as needed. Incidentally, the adhesive is a urethane-based one-pack type adhesive, has a viscosity of 2000 to 3000 cps, a coating amount of 400 g / m ² , and uses water as a curing agent. Also,
The pitch P of the nozzle holes 3 is 3 mm, and the hole diameter D is 2 mm. The gap d formed is about 0.02 mm to 0.03 mm.

Then, as shown in FIG. 3, the application nozzle 2 on the upper surface side of the lower metal sheath b is brought into contact with the metal sheath b by extension of the cylinder 16. Then, the adhesive is ejected from a number of nozzle holes 3... At a set pressure, and the received pressure caused by the ejected adhesive being received by the metal shell b received by the receiving roll 17. At
The application nozzle 2 compresses the spring 14 to form a metal shell b
And a predetermined gap d is formed between the metal shell b and the metal shell b due to the jet pressure. In such a gap d, the adhesive ejected from a large number of nozzle holes 3 on the arc surface of the application nozzle 2 formed in a substantially semicircular cross section in a planar manner with the gap d
Is applied to the metal outer shells a and b so as to have a substantially uniform thickness. Then, as shown in FIG. 4, in order to apply the adhesive to the lower surface of the upper metal shell a, the application nozzle 2 disposed below the upper metal shell a is moved by extending the cylinder 16 to the metal shell. a, an adhesive is applied, and the application nozzle 2 is retreated by the ejection pressure to form a gap d. Then, as described above, the application nozzle 2 is brought into contact with the metal outer shell a, and the application nozzle 2 is retreated from the metal outer shell a by the receiving pressure caused by the pressure for ejecting the adhesive, thereby forming the gap d. The adhesive is applied to the metal skin a evenly in the gap d, so that the adhesive can be prevented from falling off, and the lower surface of the metal skin a to be conveyed can be well applied from below. .

In the embodiment, the nozzle hole 3 is a circular hole. However, the nozzle hole 3 may be formed in a slit shape long in the longitudinal direction of the coating nozzle 2, and as shown in FIG. For example, a large-diameter hole and a small-diameter hole are arranged in a staggered manner, and the shape and form thereof can be variously changed. In FIG. 6B, reference numeral H indicates a coating width. Further, in the embodiment, the application nozzle 2 is brought into contact with the metal sheaths a and b, and the gap d is formed by the pressure of the adhesive ejected from the nozzle hole 3.
A gap smaller than the gap d may be formed in the coating nozzle 2 with respect to the metal outer shells a and b, and the gap d may be formed by the subsequent pressure of the adhesive.

FIG. 7 is a cross-sectional view of the heat-insulated fireproof panel A with a part thereof omitted.
However, a fitting projection 25 is formed at the other end. The shape and shape of the heat-insulating fireproof panel A can be variously changed.

[0015]

According to the first aspect of the present invention, the upper and lower metal shells are continuously supplied at an interval, and an adhesive is applied to the lower surface of the upper metal shell and the upper surface of the lower metal shell.
An adhesive in a heat insulating refractory panel manufacturing apparatus, in which a heat insulating refractory core material is loaded between upper and lower metal skins and the metal skin is pressed and adhered to the upper and lower surfaces of the heat insulating refractory core material, and then cut into predetermined lengths. The coating nozzle is formed with a coating roll portion having a long and substantially semicircular cross section, and a nozzle hole for ejecting an adhesive is formed at the top of the coating roll portion. Since the outer surfaces of the arcs on both sides along the circumferential direction are leveled to level the adhesive applied to the metal skin and apply the adhesive to the metal skin in a planar manner, the application nozzle is attached to the metal skin. In a case where the adhesive is ejected from the nozzle hole in such a gap when an appropriate gap is set close to the gap, the adhesive is ejected from the nozzle hole in a roll-like leveling portion formed in the application roll portion in a planar manner and corresponds to the gap. Equal thickness in gold It can be applied to the skin.
That is, there is an advantage that a function similar to that of a roll coater in which the adhesive ejected like a flow coater is leveled by a roll-shaped leveling portion can be achieved. Moreover, in the case where the adhesive is applied to the metal outer skin in such a gap, the adhesive is prevented from falling off, and the lower surface of the upper metal outer skin to be conveyed is also good from below. There is an advantage that it can be applied to.

That is, in the present invention, the adhesive applied from the nozzle hole is leveled at the leveling section of the coating roll section, and the adhesive of the metal skin can be applied in a plane. However, the present invention is characterized in that the leveling portion is formed on the application nozzle itself, thereby simplifying the configuration for applying the adhesive to the metal skin in a planar manner. In claim 2, the nozzle hole is a circular hole, and since a large number of nozzle holes are formed at appropriate intervals in a direction substantially perpendicular to the direction in which the metal shell is transported, the application nozzle is predetermined with respect to the metal shell. When the gap is formed, there is an advantage that the applied adhesive is compressed, the adhesive from the nozzle hole of the adjacent circular hole is connected, and the adhesive can be applied evenly in a plane.

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment of the present invention, wherein FIG. 1A is a partial front view partially sectioned, FIG. 1B is a side sectional view, FIG.
(D) is a perspective view.

FIG. 2 is a schematic explanatory diagram showing a production line of the above.

FIGS. 3A, 3B, and 3C are explanatory diagrams showing an operation of applying an adhesive to a lower metal outer skin of the above.

FIGS. 4 (a), (b) and (c) are explanatory views showing an operation of applying an adhesive to a metal outer skin of the above.

FIG. 5 is a schematic explanatory view showing a production line of the above.

FIG. 6 (a) is an explanatory view of a coating apparatus according to the embodiment, and FIG. 6 (b) is a bottom view of another embodiment of a coating nozzle.

FIG. 7 is a partially omitted cross-sectional view of the heat-insulating fireproof panel of the above.

[Explanation of symbols]

 a metal skin b metal skin d gap 2 coating nozzle 3 nozzle hole 22 coating nozzle holding means 23 leveling part

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-50-55636 (JP, A) JP-A-4-74560 (JP, A) JP-A-5-50003 (JP, A) JP-A-5-5000 129350 (JP, A) JP-A-5-177159 (JP, A) JP-A-6-182283 (JP, A) JP-A-8-19751 (JP, A) Japanese Utility Model Laid-Open No. 60-140676 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B05C 5/00-5/04

Claims (2)

(57) [Claims] 1. An upper and lower metal shell is continuously supplied with a vertical gap therebetween, an adhesive is applied to a lower surface of an upper metal shell and an upper surface of a lower metal shell, and an insulated refractory core is provided between the upper and lower metal shells. A metal coating is pressed and adhered to the upper and lower surfaces of the heat-insulating refractory core material while the material is loaded, and thereafter, the adhesive coating nozzle in the manufacturing apparatus of the heat-insulating refractory panel for cutting into a predetermined length, the coating nozzle A long, substantially semicircular cross-section coating roll portion is formed, and a nozzle hole for ejecting an adhesive is formed at the top of the coating roll portion, and both sides along the circumferential direction of the nozzle hole of the coating roll portion are formed. A nozzle for applying an adhesive in an apparatus for manufacturing a heat-insulated refractory panel, wherein an outer surface of an arc is formed as a leveling portion for leveling an adhesive applied to a metal outer shell and applying the adhesive in a planar manner to the metal outer shell. . 2. The apparatus according to claim 1, wherein the nozzle holes are circular holes, and a large number of nozzle holes are formed at appropriate intervals in the longitudinal direction of the application nozzle. Adhesive application nozzle.