JPH0247349B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an apparatus for continuously manufacturing a metal composite strip by heat-pressing a metal strip and a thermoplastic resin plate strip or film using a heated roller.

[Prior art]

Conventionally, metal composite bands are known, which are made by bonding metal bands such as carbon steel, stainless steel, or copper plates with synthetic resin plates such as nylon or polyethylene, or film bands, and are used as structural materials for vehicles, ships, etc. It is used as.

However, metal composite strips bonded with such adhesives have the disadvantage of low adhesive strength and easy peeling during secondary processing such as bending and drawing. An apparatus for manufacturing a metal composite strip by heat-pressing using a heat roller has been proposed and used.

FIG. 1 is a schematic diagram of a conventional metal composite strip manufacturing apparatus. This will be explained based on the figure. An unwinding machine at the front of the machine has a coil-wound metal strip as a surface material. , 2 and a resin film band 3 as a core material, which is also wound into a coil, and three infrared heaters 4 are disposed above and below behind it. Reference numeral 5 denotes a pair of upper and lower heating rollers that overlap and sandwich the upper and lower metal bands 1 and 2 whose direction has been changed by the guide roller 6 and the resin film band 3 that is traveling straight, and heat and press them with internal nichrome wire. Similarly, three sets of heating rollers 7 are arranged. Further, behind the heating roller 7, three sets of cooling rollers 8 having water passed through them, a spray nozzle 9 for spouting cold water, and a dry air nozzle 10 for spouting hot air are arranged in series. 1
1 is a metal composite band as a coil-wound product.

In the conventional metal composite band manufacturing apparatus configured as described above, the upper and lower metal bands 1 and 2 and the resin film band 3, which are rewound at a predetermined speed, are heated by an infrared heater 4 and then stacked one on top of the other. When passing between the heating rollers 5, the inner nichrome wire is heated and pressed by the roller pressure. The metal composite band 11 pressed in this manner is further heated by a heating roller 7, cooled and dried by a cooling roller 8, a spray nozzle 9, and a dry air nozzle 10, and then wound up.

However, such conventional equipment not only has a long machine base and occupies an extremely large installation space, but also requires each piece of equipment, such as a rewinding machine, heating machine, and cooling machine, to be installed independently. It required a lot of man-hours and time. Furthermore, the amount of heat released by the heating rollers 5 and 7 to the outside air is large, and the temperature unevenness in the width direction of the rollers is large, so air bubbles may be trapped in the bonding surface and the bonding may become incomplete.
Satisfactory adhesive strength could not be obtained, and there were also problems in terms of thermal efficiency.

[Summary of the invention]

The present invention has been made in view of the above points, and it is possible to unwind and preheat the surface material and to heat and press the surface material and the core material into a unit and store it in a hood that is isolated from the outside air. , we have developed continuous manufacturing equipment for metal composite strips that shortens the overall length of the machine to reduce the space it occupies, and also enables uniform bonding with little heat dissipation regardless of the outside air, improving bonding strength and thermal efficiency. This is what we provide. below,
Embodiments of the present invention will be described in detail with reference to the drawings.

〔Example〕

2 and 3 show an embodiment of the continuous manufacturing apparatus for metal composite strips according to the present invention, and FIG.
FIG. 3 is a longitudinal sectional view showing the core material unwinding part and the product winding part except for the schematic configuration diagram shown in FIG. In the figure, pit 2 is dug into the floor.
A base 22 is placed and fixed on the upper end of the base 22, and a hood 23, which is formed in a vertically rectangular shape and is isolated from the outside air by an insulating material on the outer wall, is integrally fixed and supported on the base 22. . This hood 23 is
The front side plate in the figure is formed to be openable and closable, and the top plate 23a and the bottom plate 23b spaced apart from the bottom of the pit 21 are provided with insertion holes 23c and 23d, respectively. Hood 23 like this
A bonding unit, generally indicated by the reference numeral 24, is housed inside the unit. That is, a pair of rails 25 are laid on the top plate 23a of the hood 23 with their tips protruding from the opening/closing side plates of the hood 23.
On this rail 25, there is a beam 26a, a grab body 26b hanging down from the beam 26a, and the rail 25.
Coil grab 2 consisting of rollers 26c rolling on top
6 is provided so as to be freely movable in the horizontal direction. This movement causes the glove body 26b to move into the insertion hole 23.
It is configured to be able to move between the inside of the hood 23 with the side panels open and the outside of the hood 23 while engaging with the hood 23.c. In addition, a pair of rails 2 are provided on the bottom of the pit 21.
7 is laid, and on this rail 27, a coil truck 28 consisting of a stand 28a and rollers 28b rolling on the rail 27 is provided so as to be movable in the horizontal direction. As a result of this movement, the stand 28a engages with the insertion hole 23d while the side plate of the hood 2 is opened.
It is configured to be movable between the inside of the hood 3 and the outside of the hood 23. Reference numerals 29 and 30 respectively refer to metal strips as surface materials that are coil-wound in a separate process. In this embodiment, thin stainless steel plates are coil-wound, and are attached to the glove body 26b and the base 2.
8a, respectively, and is configured to be rewound within the hood 23 in the direction shown by arrow A in the figure. Note that the metal band coils 29 and 30 (hereinafter both the metal band and the metal band coil are simply referred to as "metal band") around which the metal band is wound are coated with paper 31 during winding in a separate process so as not to damage them. A paper winder is provided in the hood 23 to wind the paper 31 into a coil 32, which is rewound simultaneously with the unwinding of the metal bands 29 and 30. Further, within the hood 23, preheating rollers 33 are mounted on shafts corresponding to the upper and lower metal bands 29, 30, respectively, for turning the unwound metal bands 29, 30 in the right angle direction and preheating them at the same time. The preheating roller 33 is composed of, in order from the center, a shaft, a nichrome wire, a cylindrical part, a heat medium such as oil, and a roller surface, and the heating temperature is slightly lower than the melting point of the resin band that is the core material, which will be described later. It is set to the temperature at which it rotates. Reference numerals 34 and 35 denote frames that are respectively supported by a base 22 and a bottom plate 23d formed of shaped steel or the like to support the paper winder and the preheating roller 33, and far-infrared heaters 36 are each fixed to these frames. ing. This far-infrared heater 36 uniformly heats the metal bands 29 and 30, which are changed in direction by the preheating roller 33 and run in the vertical direction, at approximately the same temperature as the heating temperature by the preheating roller 33, and is formed into a rod shape. A plurality of them are arranged in parallel in the upper and lower parts of the housing. 37, 38
1 is a lamination roller serving as a pair of upper and lower heating rollers, which are located in the middle between the upper and lower preheating rollers 33 and are pivotally supported by a frame 34. The lamination rollers are a pair of upper and lower heating rollers, which are positioned between the upper and lower preheating rollers 33, and whose circumferential surfaces are covered by a hydraulic cylinder, a spring member, etc. (not shown). The lamination rollers 37 and 38 are urged to press against each other and rotate in the direction of the arrow. Upper and lower metal bands 29 and 30 are guided in an overlapping manner between these lamination rollers 37 and 38, and a resin band 39 as a core material is guided between the lamination rollers 37 and 38. metal band 2
I was led to be caught between 9 and 30. resin band 3
In this embodiment, numeral 9 is made of a polyethylene film, wound into a coil and mounted on an axis outside the hood 23 as shown in FIG. The upper and lower metal bands 29 are heated by a far infrared heater 40,
It has been guided for 30 years. Then, the lamination rollers 37 and 38 pass the metal strip 2 overlappingly.
9, 30 and the resin band 39 are heated and pressurized to form the metal band 2.
It uniformly transfers heat from 9 and 30 to the resin band 39 to form a bonded state, and its structure is the same as that of the preheating roller 33, and is composed of a shaft, a nichrome wire, a cylindrical part, a heating medium, and a roller surface. . Further, in the traveling direction of the composite belt 41 which is bonded and discharged by lamination rollers 37 and 38, there are three pairs of upper and lower parts, each of which melts the resin belt 39 uniformly and sufficiently to the center to form a completely bonded composite belt. A pair of heating rollers 42 press the circumferential surfaces of each other to form a frame 34.
It is pivoted on. The structure of these heating rollers 42 is the same as that of the preheating roller 33 and lamination rollers 37 and 38. 43 is heating roller 4
There are a plurality of sets of cooling rollers, upper and lower pairs, which cool the composite strip 41 bonded with the adhesive tape 2. Cooling water is circulated inside the rollers, and the composite strip 41 is held between the upper and lower sides. The adhesive unit 24 is integrally constituted by the frames 34 and 35 described above and each heating member, etc., and is housed in the hood 23.

As shown in FIG. 2, the far-infrared heater 40 for the resin band 39 is constructed by unitizing a surface material unwinding section, surface material preheating sections 33 and 36, and heating and pressing roller groups 37 and 42 for the surface material and core material. Although it may be provided separately just in front of the stored hood 23, if the far infrared heater 40 and the hood 23 are provided integrally and consecutively as shown in FIG. 3, heat loss is reduced and the heat is used effectively. be able to.

On the outside of the hood 23, a spray nozzle 44 is housed in a housing and is arranged to spray cooling water to cool the composite belt 41, and furthermore, on the downstream side thereof, to spray hot air to dry the composite belt 41. A dry air nozzle 45 is disposed within the housing. The dried composite strip 41 is then wound into a composite strip coil 46 by a winder.

The operation of the metal composite band manufacturing apparatus configured as above will be explained. The metal strips 29 and 30, which were coiled in a separate process, are supported on the grab body 26b and stand 28a located outside the hood 23 with the side plates open, and the coil grab 26 and coil cart 28 are pushed into the hood 23. Store it. Then, in a separate process, the coil-wound resin band 39 is mounted on the outside of the hood 23, and then the metal bands 29, 30 and the resin band 39 are guided between the upper and lower lamination rollers 37, 38, and then the heating roller 42, It is wound up through a cooling roller 43, a spray nozzle 44, and a dry air nozzle 45, with its end fixed to a coil winding core for a composite band coil 46. When the machine is started after closing the side plate of the hood 23 and energizing the nichrome wire of each heat roller and the far-infrared heaters 36 and 40, metal Bands 29, 30 and resin band 39
At the same time as the metal band 29,
The surface protection paper that has been wrapped around the coil 30 is wound up with a paper winder to form a coil winding 32.
The rewound metal bands 29 and 30 are transferred to the preheating roller 33
is heated to a temperature slightly below the melting point of the resin band 39, and further heated uniformly in the width direction to maintain this temperature by a far-infrared heater 36, and then guided between lamination rollers 37 and 38.
On the other hand, the resin band 39 is also preheated to the same temperature by the far-infrared heater 40 and guided between the upper and lower metal bands 29 and 30. Between the lamination rollers 37 and 38, uniform heat transfer from the metal bands 29, 30 to the resin band 39 due to heating and pressurization and pressure bonding are performed to form a composite band 41, and then the heating roller 4
The heating by Step 2 compensates for the lack of heat and uniformly melts the resin band 39 up to its core, thereby achieving uniform and complete adhesion. In this way, all the heating from the preheating roller 33 to the heating roller 42 is carried out within the hood 23, which is isolated from the outside air by the heat insulating material, so that the heat transfer from the metal bands 29, 30 to the resin band 39 reaches the ambient temperature. Uniform adhesion is achieved without any slight changes due to left or right changes. In addition, during heating, each heating roller is assembled into an adhesive unit 24 and housed in the hood 23, so that the metal bands 29 and 30 do not come into contact with the outside air, thereby preventing rust from forming on the surface. There is no. Since the unit is easily sealed, if the inside of the hood 23 is sealed with _N2 gas or the like to isolate it from the outside air, more uniform adhesion can be obtained and the rust prevention effect can be improved.

The thus bonded composite strip 41 is cooled by a cooling roller 43 and a spray nozzle 44, dried by a dry air nozzle 45, and then wound around a coil core to form a composite strip coil 46.

In this example, the case where the surface material is a stainless steel strip and the core material is a polyethylene film is illustrated, but various surface materials such as carbon steel, aluminum, galvanized plate, copper plate, tin plate, bonded steel plate, etc. It can be applied to metal bands, and as a core material, it can be applied to various thermoplastic resins such as modified polypropylene, modified nylon, polyurethane, polyamide, vinyl acetate, and nylon.
Furthermore, the composition of composite bands is not limited to those in which the surface material is metal and the core material is synthetic resin, but the structure is multilayered in which the core material is metal or synthetic resin and the synthetic resin is sandwiched between the metal surface material and the core material. It may be a belt.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, in the continuous manufacturing apparatus for metal composite strips, each metal strip coil is arranged above and below the heating roller and the cooling roller, respectively, and the metal strip coils are unwound from the metal strip coil. Preheating rollers for guiding the metal strip between the lamination rollers are disposed above and below the lamination roller, and a heater for heating the metal strip is disposed between the preheating roller and the lamination roller. , by storing these metal band coils or roller groups in the hood, it is possible to
As is clear from the comparison with the diagram, the total length of the machine can be significantly shortened, the floor space occupied by the machine is reduced, and each part can be installed independently. Compared to conventional installation methods, the installation time and man-hours can be reduced, reducing costs and improving installation accuracy. In addition, since the bonding is carried out inside a hood that is isolated from the outside air, heat transfer from the surface material to the core material is performed uniformly regardless of the outside air temperature, and air bubbles are not trapped.
Adhesive strength is significantly improved, and heat radiation to the outside air is reduced, improving thermal efficiency.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a conventional metal composite strip manufacturing device, and FIGS. 2 and 3 show an embodiment of the continuous metal composite strip manufacturing device according to the present invention. A corresponding schematic configuration diagram and FIG. 3 are longitudinal cross-sectional views showing the core material unwinding section and the product winding section except for the core material unwinding section and the product winding section. 23...Hood, 24...Adhesive unit, 2
9, 30...metal band (metal band coil), 33...
Preheating roller, 34, 35... Frame, 36...
Far-infrared heater, 37, 38... Lamination roller, 39... Resin band, 41... Composite band, 42
...Heating roller.

Claims (1)

[Claims] 1. The metal strip and resin strip 39 unwound from the pair of metal strip coils 29 and 30 are passed sequentially between the lamination rollers 37 and 38 arranged in series, between the plurality of heating rollers 42, and between the cooling rollers 43. In a continuous manufacturing device for forming a metal composite band 41,
The metal band coils 29 and 30 are connected to the heating roller 4.
The lamination roller 37 includes a preheating roller 33 disposed above and below the cooling roller 43 and guiding the metal strip unwound from the metal strip coils 29 and 30 between the lamination rollers 37 and 38. , 38, respectively, and the preheating roller 33 and the lamination roller 37,
38. A continuous manufacturing apparatus for a metal composite strip, characterized in that a heater 36 for heating the metal strip is disposed between the metal strip coils 29, 30 or a group of rollers in a hood 23.