JPH0525875Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an apparatus for manufacturing a resin composite steel plate made of a laminate of steel plate/resin/steel plate using an extruder and a T-die.

(Prior art) Conventionally, as a manufacturing apparatus for resin composite steel sheets, the fourth
As shown in the figure, a pair of steel plates 3 and 4 are stacked so as to face each other on both the front and back surfaces of a resin film 2 extruded from a T-die 1 through an extruder and flowing down, and arranged so that their axes are located on the same horizontal line. A device for laminating and integrating steel plates 3 and 4 on both the front and back surfaces of a resin film 2 by passing them between a pair of pressure rolls 5 and 5 with the same diameter to obtain a resin composite steel plate 6 is disclosed in Japanese Utility Model Publication No. 62-28431 and Utility Model Publication No. 62-28431. 62−
It is known from Publication No. 28432. Also, JP-A-60-
In Publication No. 44341 and Japanese Unexamined Patent Publication No. 60-48351, the fourth
As shown by broken lines in the figure, there is also known an apparatus in which the steel plates 3, 4 enter the pressure rolls 5, 5 not diagonally but horizontally.

(Problem to be solved by the invention) Since such a conventional device has a path configuration in which the steel plates 3 and 4 are wrapped around the crimping rolls 5 and 5, this is called bending when the steel plates are wrapped around the crimping rolls 5 and 5. Pressure rolls 5, 5 are used to prevent plastic deformation.
It is necessary to increase the roll diameter. Generally, a roll diameter of 600 times or more than the plate thickness is required. Therefore, the distance g (referred to as air gap) until the extruded resin film 2 is fixed to the steel plates 3 and 4 is:
The gap between rolls 5 and 5 and the T-die 1 at the tip of the extruder
Due to space constraints, it becomes large. Also, due to the surface tension of the resin, T-die 1
While the skein is extruded and fixed to the steel plates 3 and 4, a width shrinkage called neck-in occurs, and the resin film 2
There is a phenomenon in which the edges of the steel become thicker. In particular, if the air gap g is long, the neck-in progresses and the tendency to thicken expands inside. Trimming is required because the thickened part cannot be used as a product, and if the thickened part is large, the yield will be poor.

The present invention solves the problems of the conventional apparatus described above and provides an apparatus capable of manufacturing resin composite steel sheets with high yield.

(Means for solving problems) The gist of the present invention is as follows.

(1) A large-diameter winding roll around which one of the steel plates, which is the starting material for a resin composite steel plate made of a laminate of steel plate/resin/steel plate, can be wrapped to prevent bending of the steel plate as it passes, and a winding roll that is wrapped around and supported by the winding roll. A small-diameter roll presses against the steel plate, a T-die that flows the molten thermoplastic resin through an extruder onto the interface between the small-diameter roll and the steel plate, and one side that is wrapped around and supported by the wrapping roll after passing through the small-diameter roll. A pressure roll presses the resin-coated surface of the resin-coated steel sheet to the other steel sheet, which is the starting material for the resin composite steel sheet, and the steel sheet is wound and supported by the large-diameter winding roll of the small-diameter roll. A manufacturing apparatus for a resin composite steel sheet, characterized in that the pressure welding position is above a horizontal line passing through the axis of a large-diameter winding roll.

(2) A large-diameter winding roll that can prevent bending of the steel plate that passes through the winding around one steel plate, which is the starting material for a resin composite steel sheet made of a laminate of steel plate/resin/steel plate, and a winding roll that is wrapped around and supported by this winding roll. A small-diameter roll that presses against the steel plate, a T-die that flows molten thermoplastic resin through an extruder onto the interface between the small-diameter roll and the steel plate, and a resin coating that has one side coated with resin after passing through the wrapping roll. A support roll that supports the non-resin coated surface of the steel plate, and the other steel plate that is the starting material for the resin composite steel plate is wrapped around the resin coated surface of the resin coated steel plate supported by this support roll to prevent the other steel plate being pressure-welded from buckling. The small-diameter roll is pressed against the steel plate that is wrapped around and supported by the large-diameter winding roll, and the position of the small-diameter roll is above the horizontal line passing through the axis of the large-diameter winding roll. A manufacturing device for resin composite steel sheets characterized by:

(3) A large-diameter winding roll around which one of the steel plates, which is the starting material for a resin composite steel plate made of a laminate of steel plate/resin/steel plate, can be wrapped to prevent bending of the steel plate as it passes, and a winding roll that is wrapped around and supported by the winding roll. A small-diameter roll that presses against the steel plate, a T-die that flows molten thermoplastic resin through an extruder onto the interface between the small-diameter roll and the steel plate, and a resin coating that has one side coated with resin after passing through the wrapping roll. The non-resin-coated side of the steel plate is wrapped around a large-diameter support roll that can prevent bending of the resin-coated steel plate that passes through it, and the resin-coated side of the resin-coated steel plate that is wrapped around and supported by this support roll serves as the starting material for the resin composite steel plate. It consists of a pressure welding roll that presses the other steel plate,
An apparatus for manufacturing a resin composite steel plate, characterized in that the position where the small diameter roll is pressed against the steel plate wound and supported by the large diameter winding roll is above a horizontal line passing through the axis of the large diameter winding roll.

(Function) In the device of the present invention, the steel plate is a cold rolled steel plate,
Surface-treated steel plates whose surfaces have been subjected to any of the following surface treatments can be used, and these steel plates can also be treated with chromate or phosphate.

Sn, Zn, Al, Pb, Ni, Cr or Cu plating Composite plating of two or more of the metals listed above Alloy plating containing one or more of the metals listed above Mainly plating of one or more of the metals listed above Composite plating as a component Typical thermoplastic resins used in the device of the present invention include polyester resin, polyolefin resin, vinyl chloride resin, polycarbonate resin, and polyamide resin, which are extruded in a single layer or in multiple layers. Also good.

The present invention will be explained in detail below.

FIG. 1 shows an embodiment of the present invention, which includes a winding roll 7 of a large diameter capable of preventing bending of the steel plate passing through which the steel plate 3 unwound from a steel plate unwinding reel (not shown) is wound; A small-diameter roll 8 that presses against the steel plate that is wound around and supported by this winding roll 7, and a T that flows molten thermoplastic resin through an extruder onto the interface between this small-diameter roll 8 and the steel plate 3.
The die 1 and the resin-coated surface of the resin-coated steel plate 9, which is coated with resin on one side and which is wound and supported by the winding roll 7 after passing through the small-diameter roll 8, are fed from another steel plate unwinding reel (not shown). The pressure contact roll 10 press-contacts another steel plate 4 which has been applied to the winding roll 7. The resin composite steel plate 6 made of a laminated body of steel plate/resin/steel plate is wound up by a downstream winding reel (not shown). In this way, the small diameter roll 8
Since the position where the resin film 2 is pressed against the steel plate 3 which is wound and supported by the winding roll 7 is set above the horizontal line passing through the axis of the winding roll 7, the resin film 2 is fixed to the steel plate 3 by the small diameter roll 8. can be brought closer to the T-die 1, and the air gap g can be shortened while preventing the steel plate 3 from bending. As a result, the net-in becomes smaller, and the thickened area of the edge portion can be reduced.

In addition, as shown in FIG. 2, there is a large-diameter winding roll 7 that can prevent the steel plate 3 from bending as it passes through the winding roll, and a small-diameter roll that is in pressure contact with the steel plate 3 that is wound around the winding roll 7 and supported. 8, a T-die 1 through which a molten thermoplastic resin flows down through an extruder onto the interface between the small-diameter roll 8 and the steel plate 3, and a resin-coated steel plate 9 whose one side is coated with resin after passing through the winding roll 7. Support roll 1 supporting the non-resin coated surface
1 and the resin-coated surface of the resin-coated steel plate 9 supported by this support roll 11, another steel plate 4 discharged from another steel plate unwinding reel (not shown) is wound around the resin-coated surface of the resin-coated steel plate 9 supported by this support roll 11, thereby preventing the steel plate to be pressure-welded from buckling. The same applies to a device in which the small-diameter roll 8 is pressed against the steel plate 3 that is wound around and supported by the winding roll 7 and is placed above the horizontal line passing through the axis of the winding roll 7. The effect of this can be obtained.

Furthermore, as shown in FIG. 3, there is a large-diameter winding roll 7 that can prevent the steel plate 3 from bending as it passes through the winding roll, and a small-diameter roll that presses against the steel plate 3 that is wound around the winding roll 7 and supported. 8, a T-die 1 through which a molten thermoplastic resin flows down through an extruder onto the interface between the small-diameter roll 8 and the steel plate 3, and a resin-coated steel plate 9 whose one side is coated with resin after passing through the winding roll 7. Large-diameter support roll 13 that can prevent bending of the steel plate that wraps around and supports the non-resin coated surface.
and a pressure roll 14 that presses another steel plate 4 fed from another steel plate unwinding reel (not shown) onto the resin-coated surface of the resin-coated steel plate 9 supported by this support roll 13. A similar effect can be obtained with a device in which the position of the small diameter roll 8 in pressure contact with the steel plate 3 wound around and supported by the winding roll 7 is above the horizontal line passing through the axis of the winding roll 7.

In addition, in order to improve the adhesion between the steel plates 3 and 4 and the resin, the steel plates 3 and 4 are preheated by gas heating, etc., and a resin composite steel plate 6 made of a laminate of steel plates/resin/steel plates is formed.
The material may be cooled with water spray or the like and dried with a hot air dryer before being wound up.

(Example) As Example 1, the thickness was 0.7 as shown in Figure 1.
mm, the diameter that the steel plate 3 with a width of 1000 mm passes around.
A small diameter roll 8 with a diameter of 50 mm is attached to a winding roll 7 of 450 mm (approximately 643 times the plate thickness) through a steel plate 3. The vertical distance between the roll axes of the winding roll 7 and the small diameter roll 8 is 185.
The dimensions shown in Figure 1 are a = 110 mm, b
= 110 mm, c = 95 mm, d = 20 mm from the T-die 1 to form a coating thickness of 50 μm, and small diameter roll 8
Another steel plate 4 with a thickness of 0.7 mm and a width of 1000 mm is pressed onto the resin-coated surface of the steel plate 9, which is coated with resin on one side and which is wrapped around the winding roll 7 after passing through, using a press roll 10 with a diameter of 120 mm. A resin composite steel plate 6 consisting of a laminate of steel plate/resin/steel plate was obtained. In this case, the air gap g is 50 mm and the threading speed is 50 m/min.
It was hot. The resin was coated approximately 10mm inward from both edges of the steel plate, and as the film was thicker than the target film thickness of 50μm for approximately 30mm from the edge of the coated resin, 45mm was trimmed from both edges of the steel plate.

As Example 2, in the apparatus shown in FIG.
It was carried out under the same operating conditions as in Example 1. however,
The support roll 11 that supports the non-resin-coated surface of the resin-coated steel plate 9 whose one side is coated with resin after passing through the wrapping roll 7 has a diameter of 200 mm, and is used as a large-diameter pressure roll around which another steel plate 4 is wrapped and pressed. The diameter of 12 is
It was set to 450mm. In this case as well, the resin was coated about 10mm inward from both edges of the steel plate, and the film was thicker than the target film thickness of 50μm for about 30mm from the edge of the coating resin, so it was 45mm from both edges of the steel plate.
I trimmed each.

(Comparative Example) As a comparative example, as shown in FIG.
A pair of steel plates 3 and 4 were layered on both the front and back sides of the resin film 2 extruded from a T-die 1 having the same dimensions as , and passed between pressure rolls 5 and 5 with a diameter of 450 mm to obtain a resin composite steel plate 6. . Operating conditions such as steel plate conditions and resin conditions are the same as in Example 1. In this case, the minimum air gap g between the pressure rolls 5, 5 and the T-die 1, which is a space constraint, is 100 mm.
Approximately 60mm from the edge of the coating resin is the target film thickness.
The film was thicker than 50 μm and 75 mm was trimmed from both edges of the steel plate.

(Effects of the Invention) As described in detail above, according to the present invention, the air gap can be shortened, neck-in can be suppressed, and resin composite steel plates can be manufactured with good yield.

[Brief explanation of the drawing]

1 to 3 are diagrams showing examples of the device of the present invention, and FIG. 4 is a diagram showing a conventional device. 1...T-die, 2...Resin film, 3, 4...Steel plate, 5...Crimping roll, 6...Resin composite steel plate, 7
... Wrapping roll, 8 ... Small diameter roll, 9 ... Single side resin coated steel plate, 10 ... Pressure roll, 11 ... Support roll, 12 ... Pressure roll, 13 ... Support roll, 14 ... Pressure roll.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A winding roll with a large diameter capable of preventing bending of the steel plate that is wrapped around one of the steel plates, which is the starting material for a resin composite steel plate made of a laminate of steel plate/resin/steel plate. , a small-diameter roll that presses against the steel plate that is wound around and supported by this winding roll, a T-die that flows molten thermoplastic resin through an extruder at the interface between this small-diameter roll and the steel plate, and a winding after passing through the small-diameter roll. It consists of a pressure roll that presses the resin-coated surface of the resin-coated steel sheet, which is wrapped and supported by a roll and is coated with resin on one side, with the other steel sheet, which is the starting material for the resin composite steel sheet, and the large-diameter winding of the above-mentioned small-diameter roll is performed. A manufacturing apparatus for a resin composite steel plate, characterized in that the pressure contact position of the steel plate that is wound around and supported by a roll is above a horizontal line passing through the axis of a large-diameter winding roll. (2) A large-diameter winding roll that can prevent bending of the steel plate that passes through the winding around one steel plate, which is the starting material for a resin composite steel sheet made of a laminate of steel plate/resin/steel plate, and a winding roll that is wrapped around and supported by this winding roll. A small-diameter roll that presses against the steel plate, a T-die that flows molten thermoplastic resin through an extruder onto the interface between the small-diameter roll and the steel plate, and a resin coating that has one side coated with resin after passing through the wrapping roll. A support roll that supports the non-resin coated surface of the steel plate, and the other steel plate that is the starting material for the resin composite steel plate is wrapped around the resin coated surface of the resin coated steel plate supported by this support roll to prevent the other steel plate being pressure-welded from buckling. The steel plate is wrapped around and supported by the large-diameter winding roll of the small-diameter roll, and the pressure-welding position of the steel plate is set above the horizontal line passing through the axis of the large-diameter winding roll. Features: Manufacturing equipment for resin composite steel sheets. (3) A large-diameter winding roll around which one of the steel plates, which is the starting material for a resin composite steel plate made of a laminate of steel plate/resin/steel plate, can be wrapped to prevent bending of the steel plate as it passes, and a winding roll that is wrapped around and supported by the winding roll. A small-diameter roll that presses against the steel plate, a T-die that flows molten thermoplastic resin through an extruder onto the interface between the small-diameter roll and the steel plate, and a resin coating that has one side coated with resin after passing through the wrapping roll. The non-resin-coated side of the steel plate is wrapped around a large-diameter support roll that can prevent bending of the resin-coated steel plate that passes through it, and the resin-coated side of the resin-coated steel plate that is wrapped around and supported by this support roll serves as the starting material for the resin composite steel plate. It consists of a pressure welding roll that presses the other steel plate,
An apparatus for manufacturing a resin composite steel plate, characterized in that the position where the small diameter roll is pressed against the steel plate wound and supported by the large diameter winding roll is above a horizontal line passing through the axis of the large diameter winding roll.