JPH0631815A - Apparatus for laminating heat-insulating sheet - Google Patents

Abstract

PURPOSE:To enable smooth feeding of a heat insulating sheet in an apparatus which laminates the heat insulating sheet on the surface of a heated steel sheet by welding by removing an obstacle to the sheet feeding caused by the fusion of the cut end of the heat insulating sheet on the cutting edge of a cutter for the sheet which is affected by high temperatures in a furnace during operation. CONSTITUTION:On the feeding side of a cutter 28 for a heat insulating sheet 3 are installed the following units: a feed roller 34 which feeds time heat insulating sheet 3 after pulling back the cut end of the sheet 3 by holding it temporarily; a motor cylinder 36 which moves the feed roller 34 vertically; and a pulling back device consisting of a press roller 37 and its driving motor 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for laminating a heat insulating sheet to a steel plate used as a roofing material for a building.

[0002]

Steel sheets used as roofing materials for buildings,
In particular, a color steel plate is a so-called folded plate that is bent in a chevron shape and a synthetic resin heat insulating sheet is attached to the back surface of the plate.

Conventionally, the above-mentioned heat insulating sheet has been adhered with an adhesive at the stage of a steel plate before being processed into a folded plate. However, since the solvent (thinner) of the adhesive has a bad influence on the health of the worker, it has been recently made. Preheats the steel sheet to a predetermined temperature above the melting temperature of the heat-welding layer formed on one side of the heat-insulating sheet, and presses the heat-insulating sheet onto the heated steel sheet to heat the heat-welding layer of the heat-insulating sheet. A method of welding was developed.

In this method, while continuously supplying the steel sheet to the heating furnace, hot air is sent from the hot air source into the heating furnace, and the hot air heats the steel sheet to a predetermined temperature.
A heat insulating sheet having a predetermined size is overlaid and pressed onto the steel sheet discharged from the heating furnace to heat-weld the heat welding layer of the heat insulating sheet. After heating and welding, the steel sheet is cut into a predetermined size together with the heat insulating sheet, and then bent and formed into a mountain shape together with the heat insulating sheet in the next folded plate forming machine to finish the roof material.

[0005]

However, when the above-mentioned apparatus is continuously operated, the cutter of the heat insulating sheet receives the heat of the heating furnace directly or indirectly to heat the cutter, and after the heat insulating sheet is cut, The separated end of the sheet may be welded to the cutting edge of the cutter. If such welding occurs, it becomes an obstacle when the heat insulating sheet is fed next.

Therefore, the present invention has an object of automatically feeding the cutter even if the cutter is heated and the cut end of the heat insulating sheet is welded. And

[0007]

In order to achieve the above object, the present invention has a laminating section for heat-welding a synthetic resin heat insulating sheet to a heated steel sheet sheet, and a cutting section of the heat insulating sheet. In the heat insulating sheet laminating device, a pullback device is provided on the heat insulating sheet feeding side of the cutting portion, after the heat insulating sheet is cut, the pulling back device for temporarily holding the separated end of the heat insulating sheet and pulling it back is fed. is there.

[0008]

In the heat insulating sheet laminating apparatus having the above structure,
After the heat insulating sheet is cut, the pullback device for the sheet temporarily operates, so even if the separated end is welded to the cutting blade,
Forcibly separated.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a resin heat insulating sheet laminating apparatus has a rewinding device 2 for a steel sheet 1, a rewinding device 4 for a heat insulating sheet 3, and a winding device 5 for finished products.

In front of the rewinding device 2 for the steel sheet 1 (see FIG. 1).
On the left side (above), a distortion removing roll 6 and a feeding roll 8 driven by a motor 7 are provided. A cutter 9 is provided in front of the feeding roll 8, and the cutter 9 is driven by a motor 10 controlled by a controller (not shown) to cut the steel sheet 1 into a predetermined size.

A feed roll 13 driven by a motor 11 is provided on a base 12 in front of the cutter 9, and a heating furnace 14 is provided in front of the feed roll 13. The heating furnace 14 is provided on the base 12 as shown in FIG. 2, and a carry-in port 15 (see FIG. 3) and a carry-out port are provided at both front and rear ends thereof.

Far-infrared radiation heater 2 is provided above the heating furnace 14.
0 (for example, Insulator heater manufactured by Nippon Insulators)
Is installed over the entire surface. In addition, two rows of left and right conveying rollers 16 are installed on the base 12 below the heater 20 at a required interval, and the upper end surface of the conveying rollers 16 has a height matching the conveying surface of the steel sheet 1. Is formed.
Two rows of endless chains 17 are installed between the transport rollers 16. The upper sprocket 18 that supports each endless chain 17 is provided on the upper portion of the base 12, and the lower sprocket 19 is provided on the lower portion of the base 12, and is driven by the motor 11 described above.

Of the pair of opposed link plates 21 constituting each of the above-mentioned endless chains 17, one of the link plates 21 is provided with a bracket 22 rising up in an inverted L shape as shown in FIG. A shallow cup-shaped magnet holder 23 is attached to 22 and a permanent magnet 24 is held inside by a screw 30. The permanent magnet 24 is one step lower than the peripheral wall of the holder 23. The magnet holder 23 is formed of a magnetic material, and the endless chain 17 is formed such that the magnet 24 is exposed on the upper surface on the forward path side and the peripheral surface of the holder 23 is at the same height as the conveying surface of the steel sheet 1. The steel sheet 1 is adsorbed on the end surface of the peripheral wall of the holder 23.

A guide bar 25 (see FIGS. 2 and 3) for supporting the chain 17 at a constant height is provided on the base 12 on the forward side of the endless chain 17.

A laminating device 2 is provided in front of the heating furnace 14.
6 is provided. This laminating device 26 is used for the heat insulating sheet 3
Guide columns 27, feeding rollers 34 and pressing rollers 37 facing the upper part thereof, heat insulating sheet cutter 28, front pressure bonding upper and lower rollers 29 and 31, rear pressure bonding upper and lower rollers 3
It consists of 2, 33. The front and rear lower rollers 31 and 33 for pressure bonding are installed at a height corresponding to the conveying path of the steel sheet 1.

The upper guide roller 3 is attached to the guide column 27.
8. A lower guide roller 38 'is provided, and a motor cylinder 36 for vertically moving the pressing roller 37 and a drive motor 35 for the delivery roller 34 are installed.

Insulating sheet 3 rewound from rewinding device 4
Passes through the upper guide roller 38 and the lower guide roller 38 ′ of the guide column 27, and is drawn obliquely downward and forward, and is guided between the upper roller 29 for front pressure bonding and the lower roller 31. The feed roller 34 and its pressing roller 37, and the heat insulating sheet cutter 28 are provided in this order from the top along the path of the heat insulating sheet 3 that is pulled out diagonally forward and downward, and the cutter 28 and the front portion for pressure bonding. Upper and lower rollers 29,
An inclined guide plate 4 for supporting the lower surface of the heat insulating sheet 3 between 31
1 is installed. The cutter 28 is driven by a motor 40.

A first sensor 42 is provided between the heating furnace 14 and the front pressure bonding roller, and a first sensor 42 is provided between the front pressure bonding upper and lower rollers 29 and 31 and the rear pressure bonding upper and lower rollers 32 and 33. 2 sensor 43 is provided, and further tilt guide plate 4
The third sensor 44 is provided in a portion near the front upper roller 29 for pressure bonding in the upper part of the first unit. The first sensor 42 described above
Detects the cut rear end of the steel sheet 1 (see FIG. 10), the second sensor 43 detects the front end thereof (see FIG. 8), and the third sensor 44 detects the cut front end of the heat insulating sheet 3. It is detected (see FIG. 7).

FIG. 6 shows a state in which the steel plate sheet 1 to which the heat insulating sheet 3 is attached is cut into a predetermined length by the above-mentioned apparatus. As shown in this figure, both ends of the heat insulating sheet 3 are formed narrower by a predetermined width from both sides of the steel sheet 1 by the overlapping width when used as a roofing material. In addition, at both ends of the steel sheet 1, the length of the heat insulating sheet 4 is shortened by the length of the eaves of the building, and the heat insulating sheet 3 is omitted from the portion protruding from the eaves, so-called eaves removal. However, when it is not necessary to remove the eaves, the heat insulating sheet 3 is attached over the entire length of the steel sheet 1.

It should be noted that the temperature of the bonding surface of the heat insulating sheet 3 is lower than the melting temperature of the sheet 3 itself (100 to 120 ° C.).
A heat-welding layer that melts at is previously formed.

The apparatus of the embodiment is as described above,
The steel sheet 1 shown in FIG. 1 is continuously fed from the unwinding device 2 to the heating furnace 14 through the strain relief roll 6, the feeding roll 8, the cutter 9, and the feeding roll 13, Insulating sheet 3 in laminating device 26
Are laminated and wound on the winding device 5.

In the heating furnace 14 described above, the steel sheet 1 is adsorbed on the peripheral surface of the magnet holder 23 of the endless chain 17 and conveyed on the conveying roller 16 at a constant speed. The reason why the steel sheet 1 is adsorbed on the peripheral surface of the holder 23 without being directly adsorbed by the magnet 24 is to reduce the loss of the magnet 24.

Steel sheet 1 by the endless chain 17
Is determined in consideration of the heat quantity of the far-infrared radiant heater 20 and the heat transfer coefficient of the steel plate sheet 1.
Temperature of the upper surface of the heat insulating sheet 3, that is, the bonding surface of the heat insulating sheet 3 is
4, the melting temperature of the heat insulation sheet 3 (100 to
It is heated to 120 ° C). At this time, the temperature of the lower surface of the steel sheet 1 (color layer forming surface in the case of a color steel sheet) is about 20 ° C. lower than the temperature of the upper surface.

Thus, when the tip of the steel sheet 1 discharged from the heating furnace 14 reaches the first sensor 42, the motor 10 is temporarily driven by the control device, and the steel sheet 1 is cut by the cutter 9 to a desired length. Disconnect. The tip of the steel sheet 1 passes the portion of the first sensor 42 and the second sensor 4
Until the heat insulating sheet 3 reaches 3, as shown in FIG.
Its tip is stopped below the third sensor 44.

When the tip of the steel sheet 1 reaches the second sensor 43 as shown in FIG.
5 is driven, the heat insulating sheet 3 sandwiched by the feeding roller 34 and the pressing roller 37 advances, and is fed between the front pressure bonding upper and lower rollers 29 and 31, and the steel sheet sheet 1 is left only for so-called eaves removal. It is placed on top and pressed between these rollers 29, 31, and further rear pressure bonding upper and lower rollers 3
It is fed between 2 and 33 and is crimped (see FIG. 9).
At this time, the heat of the upper surface of the steel sheet 1 causes the heat insulating sheet 3
Since the heat-welding layer on the lower surface of is melted, the heat insulating sheet 3 is welded to the steel sheet 1.

When the front end portion of the heat insulating sheet 3 is pressure-bonded between the front pressure bonding upper and lower rollers 29 and 31, the pressing roller 3 is pressed.
7 rises (see FIG. 9), and the feeding of the heat insulating sheet 3 is entrusted to the rollers 29, 31 and 32, 33.

When the rear end of the steel sheet 1 reaches the first sensor 42 further, the cutter 28 of the heat insulating sheet 3 is actuated and cuts as shown in FIG. Simultaneously with this cutting, the pressing roller 37 descends to sandwich the uncut end of the heat insulating sheet 3.

The heat insulating sheet 3 cut by the cutter 28 is continuously fed and welded to the steel sheet 1, but the uncut end has the heat of the cutter 28 (if the cutter 28 continues to operate, the heating furnace 14 Due to the heat directly and indirectly transmitted from the.), It may be welded to the lower blade. If feeding is performed with such welding, trouble may occur. Therefore, at the same time as the cutting is completed, the motor 35 is temporarily reversed in the reverse direction and the feeding roller 34 is fed.
Is reversed in the direction indicated by the one-dot chain line arrow in FIG. Then, the heat insulating sheet 3 welded to the lower blade is slightly pulled back, so that the cutting edge is separated from the lower blade (FIG. 12).
reference).

As soon as the separation is completed, the motor 3
5 returns to normal rotation (solid line arrow in FIG. 12), advances the separated end of the heat insulating sheet 3 to the third sensor 44, and stops at that position (see FIG. 7). The above cycle is repeated below.

The steel sheet 1 which has been bonded and cut into a predetermined size is wound one by one in the winding device 5. At this time, an operator puts his hand on the winding start and the winding end, but the operator can withstand the heat of the steel sheet 1 only by wearing gloves.

[0031]

As described above, according to the present invention, the retracting device is provided on the feeding side of the heat insulating sheet, so that the cut end of the heat insulating sheet is temporarily grasped and pulled back before being fed. Therefore, even if the cut edge of the heat insulating sheet may be welded to the cutting edge due to the heat of the cutter, it can be forcibly separated and then fed, and the laminating operation can be continued smoothly.

[Brief description of drawings]

FIG. 1 is a side view showing the entire embodiment.

FIG. 2 is an enlarged vertical front view of the heating furnace portion of the above.

FIG. 3 is an enlarged vertical side view of the heating furnace portion of the above.

FIG. 4 is a partially enlarged perspective view of the above endless chain.

FIG. 5 is an enlarged side view of a portion of the above-mentioned bonding device.

FIG. 6 is a perspective view of the steel plates that have been laminated by the same device.

FIG. 7 is an operation explanatory diagram.

FIG. 8 is an operation explanatory diagram

FIG. 9 is an operation explanatory diagram

FIG. 10 is an operation explanatory view.

FIG. 11 is an operation explanatory diagram.

FIG. 12 is an operation explanatory diagram

[Explanation of symbols]

 1 Steel Sheet Sheet 2 Rewinding Device 3 Insulation Sheet 4 Rewinding Device 5 Winding Device 6 Strain Relieving Roll 7 Motor 8 Feeding Roll 9 Cutter 10 Motor 11 Motor 12 Base 13 Feeding Roll 14 Heating Furnace 15 Inlet 16 Conveyor Roller 17 Endless Chain 18 Sprocket 19 Sprocket 20 Far Infrared Radiator 21 Link Plate 22 Bracket 23 Magnet Holder 24 Permanent Magnet 25 Guide Bar 26 Laminating Device 27 Guide Strut 28 Insulating Sheet Cutter 29 Front Crimping Upper Roller 30 Screw 31 Front Crimping lower roller 32 Rear crimping upper roller 33 Rear crimping lower roller 34 Sending roller 35 Motor 36 Motor cylinder 37 Holding roller 38 Upper guide roller 38 'Lower guide roller 40 Motor 41 Inclined guide plate 42 First sensor 43 Second Sen Over 44 the third sensor

Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area // B29L 9:00 4F

Claims (1)

[Claims] 1. A heat insulating sheet laminating apparatus having a laminating portion for thermally welding a synthetic resin heat insulating sheet to a heated steel sheet and a cutting portion of the heat insulating sheet, wherein the heat insulating sheet feeding side of the cutting portion. An apparatus for laminating a heat insulating sheet, further comprising: a pulling-back device that temporarily holds the separated end of the heat insulating sheet after cutting the heat insulating sheet, pulls back the separated end, and then feeds it back again.