JPH06320327A - Trimming device in manufacture of laminated metal plate - Google Patents

Abstract

PURPOSE:To perform good trimming even against a meandering of a metal plate by providing a slide mechanism for moving a roll outer shell and a cutting blade in a width direction of the metal plate. CONSTITUTION:A trimming device 7 comprises a grooved roll 9 and a cutting blade 8. This roll 9 has a fixed roll shaft 10 not rotated in a circumferential direction and an outer shell 11 rotated in the circumferential direction. Grooves 14 are provided in a circumferential direction of this outer shell 11. The outer shell 11 and the cutting blade 8 are moved in the width direction of a metal plate 1 by slide mechanism 12. Overcoat resin 3 passes on the grooves 14 of this outer shell 11, and the cutting blade 8 is brought into contact with the overcoat resin 3, so that this resin 3 is cut. The cutting blade 8 is pressed by the end part of the metal plate 1 to be matched with meander thereof, and simultaneously with this pressing, the outer shell 11 of the grooved roll 9 is moved in a plate width direction, to always perform trimming of the resin 3 by the end part of the metal plate 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trimming device for producing a thermoplastic resin-coated metal sheet with high yield.

[0002]

2. Description of the Related Art In the production of a laminated metal sheet, when laminating films or coating resin on the metal sheet using an extruder and a T-die, in order to improve the yield of products, the edge of the metal sheet is It is desirable to match the ends of the film or the coating resin, but in the production line, it is impossible to match the ends because the metal plate meanders from several mm to several tens of mm during passing. .

Since the metal plate is more expensive in terms of manufacturing cost, it is economically advantageous to make the width of the resin wider than that of the metal plate and trim the resin later.

Trimming of resin can be easily cut with a flat blade or a round blade, but when trying to cut the end cleanly in accordance with the meandering of the metal plate, a highly accurate detection device of the end and the movement control of the blade to that position. The equipment is large and requires expensive equipment.

Regarding the method of trimming the ears of the coating resin protruding from the substrate during extrusion coating, according to the method of Japanese Patent Publication No. 3-65785, when the line speed becomes high, the temperature of the surface of the cooling roll rises, and the substrate The resin that squeezes out easily gets wrapped around the cooling roll,
It cannot be stripped off satisfactorily, and eventually it winds up, making it impossible to operate.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the conventional problems, and provides a simple trimming device which can easily cope with a meandering metal plate. is there.

[0007]

SUMMARY OF THE INVENTION The present invention comprises a grooved roll and a cutting blade, the grooved roll having a roll shaft that does not rotate in the circumferential direction and an outer shell that rotates in the circumferential direction.
A groove is provided in the circumferential direction of the outer shell, and a slide mechanism that allows the outer shell of the roll and the cutting blade to move in the width direction of the metal plate is provided, and the overcoat resin is passed over the groove, and the cutting blade is placed on top of it. A trimming device in the production of a laminated metal plate, which is characterized by applying and cutting.

[0008]

The present invention will be described below with reference to the drawings.

1 and 2 are explanatory views of a method of manufacturing a laminated metal plate by an extrusion coating method, in which a pressure-bonding roll 5 is pressed against the surface of a preheated metal substrate 1 wound around a winding roll 4, The metal substrate surface and pressure bonding roll 5
It shows a method for producing a laminated metal plate in which a molten thermoplastic resin film 3 is flown down from a T die 2 through an extruder at the interface with and the thermoplastic resin film is coated on the metal substrate 1.

FIG. 1 shows a path structure in which a metal plate is drawn out to the winding roll side, and FIG. 2 shows a path structure in which a metal plate is drawn out to the pressure bonding roll side.

This method makes it easy to adjust the film thickness and surface condition. For example, it is easy to adjust the gloss of the surface and to add an embossed pattern to the surface.

Metal substrate 1 coated with high temperature molten resin 3
Is cooled or, if necessary, dried and wound. For cooling, for example, after air cooling, water spraying may be performed, a water cooling tank may be passed through, or a cooling roll may be passed.

FIG. 3 shows the trimming device of the present invention.

It comprises a grooved roll 9 and a cutting blade 8,
The grooved roll 9 has a fixed roll shaft 10 that does not rotate in the circumferential direction and an outer shell 11 that rotates in the circumferential direction. Grooves 14 are provided in the circumferential direction of the outer shell, A slide mechanism 12 is provided which allows the shell and the cutting blade to move to the left and right in the width direction of the metal plate, the overcoat resin 3 is passed over the groove 14, and the cutting blade 8 is applied onto the groove 14 to cut.

With this trimming device, the blade is pushed at the end of the metal plate in accordance with the meandering of the metal plate, and at the same time,
The outer shell of the grooved roll moves in the plate width direction, and it is possible to always trim the resin at the end of the metal plate.

The groove is set by the plate width, and a large number of grooves are provided.
Can cope with changes in board width.

[0017]

Example 1 In the apparatus shown in FIG. 1, the outer diameter is 300 mm.
Using a laminated metal plate manufacturing apparatus using a pair of rolls, a surface-treated steel plate having a thickness of 0.3 mm and a width of 800 mm is used as a metal plate, and after preheating the steel plate to 200 ° C.,
A polyethylene terephthalate resin was melt-extruded from a T-die through an extruder at the interface between the steel plate and the roll.

The resin temperature is 280 ° C. and the coating thickness is 50 μm.
m, the coating width is 860 mm, and it is 30 on both sides of the steel plate.
Widely overcoat by mm, line speed is 80
m / min.

Further, the laminated metal plate coated with the molten resin is cooled by water spray in a cooling / drying device located downstream of the laminated metal plate and dried by warm air, and the trimming device after that trims the resin at the end portion, It is rolled up into a product.

[0020]

With the trimming device of the present invention, it is possible to perform good trimming even on meandering of a metal plate, and to easily cope with changes in the width of the base material.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a device of the present invention.

FIG. 2 is an explanatory view of the device of the present invention.

FIG. 3 is an explanatory diagram of a trimming device.

[Explanation of symbols]

 1 Metal Plate 2 T Die 3 Thermoplastic Resin 4 Winding Roll 5 Crimping Roll 6 Cooling / Drying Device 7 Trimming Device 8 Blade 9 Grooved Roll 10 Roll Shaft 11 Roll Outer Shell 12 Sliding Mechanism 13 Bearing 14 Groove 15 Blade Holder 16 Slide Plate

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

Claims (1)

[Claims] 1. A grooved roll and a cutting blade, wherein the grooved roll has a roll shaft that does not rotate in the circumferential direction and an outer shell that rotates in the circumferential direction, and the groove in the circumferential direction of the outer shell. In addition, a slide mechanism that allows the outer shell of the roll and the cutting blade to move in the width direction of the metal plate is provided, and the overcoat resin is passed over the groove, and the cutting blade is applied on top of it to cut. Trimming device in the production of the characteristic laminated metal plate.