JP3103178B2 - Method and apparatus for laminating heat insulating plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for laminating a heat insulating plate which is used, for example, as a folded plate for a roof and is formed by laminating a synthetic resin foam on a steel plate by means of heat fusion or an adhesive. It is about.

[0002]

2. Description of the Related Art Conventionally, this type of laminating apparatus has
The steel sheet travels from the carry-in entrance to the carry-out port of the heating housing provided with the circulation-type hot air generator, and hot air is blown on the steel sheet in a direction substantially parallel to the plate surface, while the steel sheet carried out from the carry-out port A heat insulating sheet made of a synthetic resin foam is laminated between a pair of rolls by heat fusion or an adhesive. Therefore, at least during operation of the device,
Hot air always leaks from the carry-out port.

[0003]

However, in the above-mentioned prior art configuration, the hot air leaked from the carry-out port of the heating casing is heat-sealed or adhered to the vicinity of the carry-out port via a guide roll or the like. The heat insulating sheet body before being laminated by the agent is heated. For this reason, the heat insulating sheet body is elongated, and the uniformity of the thickness is lost. In an extreme case, the heat insulating sheet is cut by melting.

Further, the hot air leaked from the carry-out port heats the guide roll, causing the heat-insulating sheet fed out to the roll to be stuck, or causing peripheral equipment, for example, a cutter for cutting the heat-insulating sheet, to heat. There is a problem that the operation accuracy is lowered.

On the other hand, particularly in the case of lamination processing by heat fusion (thermal lamination), when an operation line is stopped such as a change in product specifications such as a change in sheet width, hot air flows from a carry-out port due to a stoppage of operation of a circulation system. During the stop, for example, a high-temperature (for example, 200 ° C.) steel plate exposed to the outside of the carry-out port is cooled by external air (for example, 100 ° C. or less). During operation, sufficient heat fusion cannot be performed on the heat-insulated sheet body in the cooled portion, and the yield of the product deteriorates accordingly.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it has been made possible to prevent adverse effects due to leakage of hot air and to ensure continuous productivity when the operation line is restarted. An object of the present invention is to provide a method of laminating a heat insulating plate and a processing apparatus therefor.

[0007]

In order to achieve the above object, the invention of claim 1 comprises a step of blowing hot air to a running steel sheet, and a step of heat-sealing a heat insulating sheet made of synthetic resin foam on the steel sheet. Alternatively, in the method of laminating a heat insulating plate having a step of laminating with an adhesive, the step of laminating and the step of blowing the hot air are thermally shielded.

[0008] The invention according to claim 2 is a hot air supply device for blowing hot air to a traveling steel sheet carried into the heating housing, and a heat insulating sheet made of synthetic resin foam on the steel sheet carried out of the heating housing. And a pressure contact means for laminating the body between at least a pair of rolls, wherein the heat shielding means is provided between the discharge port of the heating housing and the pressure contact means. Features.

[0009]

Since the hot air leaking from the outlet of the heating housing is blocked by the hot air blocking means, it does not adversely affect at least the downstream pressure contact means.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. A heating furnace 2 serving as a heating housing is provided at a substantially central portion of the gantry 1 placed on the base, and a hot air generator 3 constituting a hot air supply device is provided above the heating furnace 2. A blower 4 is attached near the hot air generator 3. The hot air generator 3 has a blower-side air guide tube 5.
The blower 4 is provided with a return-side air guide tube 6.

An exhaust damper 7 which constitutes a hot air diverting means is provided substantially in the middle of the air guide pipe 6, and the damper 7 has an opening adjuster 8 constituted by, for example, an air cylinder. Is provided.

An upstream side of the gantry 1 is provided with a raw part (not shown) of the steel sheet 9, and the steel sheet 9 fed from the raw part passes through a feeding roll 10 and a counting roll 11. After that, it is carried into the heating furnace 2.

On the other hand, an unwinding deck 12 is provided above the gantry 2, and the unwinding deck 12 is provided with a first heat insulating material 13 and a second heat insulating material 13;
The heat insulating material 13 is wound with a heat insulating sheet 15 made of, for example, a synthetic resin foam (polyethylene foam).

In the vicinity of the unwinding deck 12,
Guide poles 16 for preventing the meandering of the heat insulating sheet body 15 are provided vertically, and the guide poles 16 are provided with an appropriate number of guide rolls 17 rotatably at appropriate intervals in the axial direction.

Further, between the guide pole 16 and the heating furnace 2, there is provided a heat insulating member 18 made of hollow iron as a heat shielding means.
Is provided. In addition, as described later, the heat insulating member 1
The cold water circulates in the hollow portion 8.

On the other hand, on the downstream side of the guide pole 16,
A cutter 19 for cutting the heat insulating sheet body 15 is provided, and laminating rolls 20 and 21 as pressing means are provided downstream of the cutter 19.

The laminating rolls 20, 21
A water-cooling and air-cooling cooling mechanism 22 is provided on the downstream side, and a wiper roll 23 for wiping off water drops, a roll 24 for trimming the heat insulating material sheet 15, and a shearing mechanism 25 are provided downstream of the cooling mechanism 22. It is provided in.

A return mechanism 16 is provided below the shearing mechanism 25 and at the downstream end of the gantry 1, and a conveyor belt 28 is provided at the bottom of the gantry 1, and the conveyor belt 28 is It is connected to the next step, for example, a folding plate step.

Although the above configuration is a configuration for thermal lamination, the configuration of this embodiment is designed to be applicable to the case of lamination processing (adhesive lamination) using an adhesive.
Necessary mechanisms such as an adhesive tank 29 and a gluing machine 30 are provided. In this case, the heating furnace 2 serving as the heating housing functions for drying the adhesive with hot air.

Next, the operation of the operation line of the apparatus having the above-described configuration according to the present embodiment will be described with reference to FIGS. 1, 2 and 3 by taking heat lamination as an example.

After passing through the feed roll 10 and the counting roll 11, the steel sheet 9 unwound from the web is carried into the heating furnace 2, and is fed by the substantially parallel hot air flow blown out of the hot air generator 3. The surface of the steel plate 9 is heated.

FIG. 2 shows a circulation state of the hot air from the hot air generator 3, and the hot air circulates in the order of arrows a to g.

In this case, during the heating, the exhaust damper 7 is used.
Is in a closed state.
Although the hot air fm leaking out of the furnace from a is smaller than the circulating hot air (arrow f), even if the amount of leaking increases, the leaked hot air is blocked by the heat insulating member 18.
It does not overheat the heat insulating sheet body 15 on the downstream side or disable the operation of peripheral devices.

Further, cold water is constantly circulating in the hollow portion 18A of the heat insulating member 18, and heat exchange with external hot air is performed.

Then, the steel plate 9 passing through the outlet 2a
When the sheet passes through the laminating rolls 20, 21, the heat insulating sheet 15 is laminated on the surface thereof by thermocompression bonding.
Then, after being cooled by the cooling mechanism 22, it is cut into a predetermined length by the shearing mechanism 25, and is sent onto the transport belt 28 via the return mechanism 26.

FIG. 3 shows a temporarily stopped state of the operation line.

At the time of this stop, the opening degree adjusting mechanism 7 is operated to open the exhaust damper 7. As a result, the hot air from the hot air generator 3 circulates as shown by arrows A to G, but the circulating hot air E in the heating furnace 2 leaks out near the carry-out port 2a and the discharged hot air (arrow Fb) ).
Of course, the leaked hot air indicated by the arrow Fa is significantly larger than the leaked hot air (arrow fm) in the closed state.

Therefore, the steel sheet 9 which is outside the outlet 2a of the heating furnace 2 is heated by the leaked hot air Fa, and therefore, when the operation line is restarted, the thermocompression bonding can be performed immediately and continuously.

When the operation line is stopped, that is, when the exhaust damper 7 is in an open state, the outside air K is introduced into the air guide tube 6, so that the temperature in the heating furnace 2 is lowered. No effect.

[0030]

As described above, according to the first aspect of the present invention,
In the laminating method of an insulating plate body, the method includes a step of blowing hot air to a traveling steel sheet, and a step of laminating an insulating sheet body made of a synthetic resin foam on the steel sheet by heat fusion or an adhesive. And the step of blowing the hot air are thermally shielded, so that the heating step and the laminating step are thermally shut off, and the overheated state of the heat insulating material and the inoperable state of the peripheral devices and the like are reduced. This can be avoided beforehand, and productivity can be improved.

According to the second aspect of the present invention, the hot air supply device blows hot air to the traveling steel plate carried into the heating housing, and the synthetic steel foam is formed on the steel plate carried out of the heating housing. And a press-contact means for laminating the heat-insulating sheet body between at least a pair of rolls, wherein the heat-shielding means is provided between the carry-out port of the heating housing and the press-contact means. Therefore, the invention of claim 1 can be easily and specifically implemented by simply adding a simple configuration to a ready-made device.
It can contribute to improvement of production efficiency.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing the configuration of an embodiment of the apparatus according to the present invention.

FIG. 2 is a main part side view showing a configuration near a heating furnace in a closed state.

FIG. 3 is a main part side view showing a configuration near a heating furnace in an open state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stand, 2 Heating furnace (heating housing), 3 Hot air generator (hot air supply device), 7 Exhaust damper (hot air diverting means), 9 Steel plate, 15 Heat insulating material sheet body, 18 Heat insulating member (Heat shielding means), 20 , 21 Laminate roll (pressing means).

Claims (2)

(57) [Claims] 1. A method for laminating a heat-insulating plate body, comprising: a step of blowing hot air onto a running steel sheet; and a step of laminating a heat-insulating sheet body made of a synthetic resin foam on the steel sheet by heat fusion or an adhesive. Wherein the laminating step and the hot air blowing step are thermally shielded. 2. A hot air supply device for blowing hot air onto a running steel sheet carried into a heating housing, and a heat insulating sheet made of a synthetic resin foam on the steel sheet carried out of the heating housing, between at least one pair of rolls. A heat-insulating plate body laminating apparatus comprising: a heat-insulating plate body, wherein a heat-shielding means is provided between the outlet of the heating housing and the press-contact means. Laminating equipment.