JPH10101023A - Method and apparatus for coating film of rolled metal coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for coating a film of a rolled metal coil suitable for practice wherein a structure is simple, a facility cost is not expensive and handling of the coil is easy. SOLUTION: The method includes a process of carrying a rolled metal coil 13 wound into a cylinder with an end face facing a vertical direction and installing at a predetermined position, a process of mounting a coat film 33a on a temporary film mount having a film discharging slit opened approximately in parallel to an axial line direction of the rolled metal coil 13 placed above a carry line of the rolled metal coil 13, a process of cutting the coat film 33a into a predetermined width, and a process of discharging the coat film 33a cut into the predetermined width downward from the film discharging slit and pushing it against a surface of the rolled metal coil 13 along a surface shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing dust and rust on the outer peripheral portion of a coil, particularly in a final line on the exit side of a rolled metal coil and the like, especially a cold rolled coil and a surface treated (plated) coil. As a measure against rust, the present invention relates to a method and an apparatus for coating a film on the outer surface of a coil.

[0002]

2. Description of the Related Art Rolled metal coils (hereinafter simply referred to as "coils") are usually wrapped in packing paper at the final shipping stage, but before the final packing, that is, cold-rolled coils and surfaces. In the handling stage from the final line on the outgoing side of the treated (plated) coil, etc. to the final packing, dust and the like adhere to the coil surface, and the adhering matter absorbs oil on the outer surface of the coil, and rust spots on that portion There is a problem that occurs. Therefore, it is conceivable to cover the coil surface with a film for dust prevention and rust prevention in the above stage.

Several methods and apparatuses have been proposed for mechanizing and automating the process of coating the coil surface with a film. A typical example thereof is disclosed in Japanese Utility Model Laid-Open No. 2-111658. There is a device for a protective cover. The protective cover disclosed in this publication has an arch-shaped synthetic resin film band covering an outer peripheral surface of a coil having an arc surface approximating the coil circumference at an upper portion, and on both side surfaces of the arch-shaped synthetic resin film band. It is made of a synthetic resin film film covering both end faces of a coil having a hole similar to the inner diameter of the joined coil, and has a lower part opened in a rectangular shape. Then, dust protection is performed by covering the coil.

As another example, Japanese Patent Application Laid-Open No. 2-72
There is an invention of a film wrapping device for film wrapping disclosed in Japanese Patent No. 011. The invention disclosed in the publication discloses a method of winding a film from a winding roll along an outer surface of a roll group of an annular body in which a plurality of support rolls and a winding roll are rotatably arranged on a circumference. Is a device for taking out a film from the inner end of a wound film layer and winding the film around a packaged object by a winding roll.

[0005]

However, in the device disclosed in Japanese Utility Model Laid-Open Publication No. Hei 2-111658,
There is a problem that an individual protective cover is required for each coil, which is expensive in terms of capital investment, and that the cover needs to be replaced at any time, resulting in poor efficiency. In the case of a method using a stretch film for packaging as in the invention disclosed in Japanese Patent Application Laid-Open No. 2-72011, the transfer of the coil is performed by winding the coil-shaped film around the coil. There is a fatal problem that moving is necessary and equipment costs are high. As described above, all of the conventional techniques have problems that the equipment cost is high and the handling of the coil is poor, and they are not suitable for practical use.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and has a simple structure and a high facility cost.
An object of the present invention is to provide a method and an apparatus for coating a film of a rolled metal coil suitable for practical use in which handling of the coil is easy.

[0007]

According to the present invention, there is provided a method of coating a rolled metal coil with a film, comprising the steps of: transporting a rolled metal coil wound in a cylindrical shape with its end face in a vertical direction, and setting the rolled metal coil at a predetermined position. Having a film dispensing gap opening substantially parallel to the axial direction of the rolled metal coil, the step of mounting the coating film on a film temporary mounting table installed above the rolled metal coil transport line, A step of cutting the coating film into a predetermined width, and a step of discharging the coating film cut into a predetermined width downward from the film dispensing gap and pressing against the surface of the rolled metal coil along the surface shape. Things.

The film coating apparatus for a rolled metal coil according to the present invention comprises: a conveying means for conveying a rolled metal coil wound in a cylindrical shape to a predetermined position with an end face in a vertical direction; Releasing the coating film from the film roll according to the width dimension of the coil, film deflector for feeding out a predetermined length, film cutting means for cutting the fed coating film, substantially parallel to the axial direction of the rolled metal coil A film dispensing gap that opens to, a film temporary mounting table installed above the rolled metal coil conveying line, and a film transport unit that transports the cut film to a predetermined position of the film temporary mounting table, The coated film conveyed to a predetermined position of the film temporary mounting table is discharged downward from the film discharge gap, and the rolled metal It is obtained by a film pressing unit pressing the surface of yl.

In addition, a nip roller which can be brought into contact with and separated from the edge is provided in parallel with the edge at the edge of the film dispensing gap of the temporary film mounting table.

Further, the film temporary mounting table is provided with an elevating function.

[0011] The film pressing means includes a pair of arms rotatably connected at one end, a means for raising and lowering the pair of arms, and a film winding roller provided at the other end of each of the arms. It is provided with.

The pair of arms each include a plurality of links connected in series in a free end direction with the connecting portion as a base point.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is an explanatory view of a film coating apparatus for a rolled metal coil of the present invention and a film coating method using the apparatus. In the figure, 1 is a film coating device,
Various devices described later are installed on the frame-shaped gantry 31. A coil transfer line is provided below the gantry 31 of the film coating apparatus 1, and the coil formed by the rolling line is transferred on the coil transfer line.
However, in FIG. 1, the transport lines are shown shifted to the right in the figure for easy understanding. First, the transport line will be described. Reference numerals 3 to 11 denote fixed saddles which are installed at predetermined positions on the transport line and on which the coils 13 transported on the transport line are placed. Fixed saddle 3,
Reference numerals 5 and 7 are installed on the upstream side of the film coating apparatus 1, a fixed saddle 9 is installed at a film coating work position in the film coating apparatus 1, and a fixed saddle 11 is installed on the downstream side of the film coating apparatus 1.

The upper surfaces of the fixed saddles 3 to 11 have coils 13
Are formed in a V-shape so as to be placed. Reference numeral 15 denotes a moving saddle configured to be movable on the transport line,
The movable saddle 15 is controlled to stop at the positions of the fixed saddles 3 to 11. The movable saddle 15 has an elevating function, and the fixed saddles 3 to 11 on which the coil 13 is mounted are provided.
And the coil 13 is lifted at that position to lift the coil 13. Then, it moves to the next fixed saddle, descends at that position, and places the coil 13 on the fixed saddle.

Next, another device on the transport line will be described. Reference numeral 17 denotes a banding machine that winds a hoop band 19 around the coil 13, and reference numeral 21 denotes a label attached to the coil 13. 22 is installed near the fixed saddle 7 installed in front of the film coating apparatus 1,
3, a width sensor for measuring the width in the axial direction, 13 is also installed near the fixed saddle 7, a distance sensor for detecting the height position of the coil 13, and 25 is installed near the fixed saddle 9 and mounted thereon. This is a displacement sensor that detects displacement of the placed coil 13. Reference numeral 60 denotes a holding arm provided on the film coating apparatus 1 for holding the film, the details of which will be described later. Reference numeral 29 denotes a tong crane which is installed above the fixed saddle 11 and carries out the coil 13 covered with the film.

FIG. 2 is a schematic diagram schematically showing a side surface of the film coating device 1 shown in FIG. 1, and FIG. 3 is a schematic diagram schematically showing a plane of the film coating device 1. Hereinafter, the configuration of the film coating apparatus 1 will be described with reference to FIGS. 31 is a gantry arranged across the coil transfer line,
Reference numeral 33 denotes a cylindrical film roll rotatably mounted on the upper surface of the gantry 31 by a roll support device 35. The film 33a wound around the film roll 33 is a polyethylene film having a thickness of 50 μm to 70 μm.
The reason why polyethylene was used as the material is that it has good wettability with rust preventive oil. For example, in the case of polypropylene or polyvinyl chloride, uneven coating of oil occurs in the vinyl cured portion, the oil is adsorbed on vinyl, the oil film becomes thinner, and the rust-preventive oil must be applied again. In addition, the reason why the thickness is set to 50 μ to 70 μ is that if the thickness is smaller than this, the film 33 a is wound around a feeding device or rolls described later, which may cause equipment trouble, impair handling, or break during transportation. This is because there is a problem in that the thickness is larger, and when the thickness is larger than this, there is a problem that the cost increases.

Reference numeral 37 denotes a bucket roll disposed near the outer periphery of the film roll 33 to prevent the film 33a from wrinkling, and 39 denotes a solution which is disposed at a predetermined distance from the film roll 33 and disengages the film roll 33. It is an anti-roller. The disassembling roller 39 is composed of a pair of rolls arranged vertically, and disengages the film roll 33 with a film interposed between the pair of rolls. Reference numeral 41 denotes a fixed-length feed conveyor which is provided at a predetermined distance from the dismantling roller 39 and draws out the film by a predetermined length. The fixed-length feed conveyor 41 includes a pair of vertically arranged rolls, and a servomotor connected to a lower roll of the pair of rolls via a conveyor belt 43 (see FIG. 2 or FIG. 3). 45 and an encoder 46 for detecting rotation of the pair of rolls. The film is fed out by a predetermined length by the predetermined rotation of the servo motor 45.

Reference numeral 47 denotes a cloth presser which is provided on the conveyor belt of the fixed-length feed conveyor 41 and presses the film. The dough presser 47 is a bar-like member 47 provided at the tip.
a (see FIG. 2 or FIG. 3) is configured to be able to move up and down so as to hold down the film when it is lowered. Reference numeral 49 denotes a cutter unit having a disk-shaped cutter 49a for cutting a film. The cutter unit 49 is a cutter 49a.
The film is cut by moving in the width direction of the film while rotating. The cutter unit 49
Is provided with a guide apron (not shown) for transferring the leading end of the film cut by the cutter 49a to a transport conveyor 51 described later.

Reference numeral 51 denotes a conveyor for transporting the film cut by the cutter 49a to a predetermined position (the center of a holding arm described later), and a pair of conveyors 51a and 51b arranged at a predetermined interval, and the pair of conveyors 51a and 51b. Nip rollers 53a, 53b installed on the respective conveyors 51a, 51b. The pair of conveyors 51a and 51b can be driven by the EC servo 55 for a predetermined distance. In addition, the transport conveyor 51 is installed on an elevating unit 31a which is separately configured to be able to move up and down in the gantry 31, and moves up and down at the time of film coating described later.

As shown in FIG. 1 or FIG. 2, the film 33a unwound from the film roll 33 is
9 to a fixed-length conveyor 41. next,
Devices related to the extended film 33a will be described. Reference numeral 56 denotes an end sensor that is disposed near the film roll 33 and detects the end of the film 33a. Reference numeral 57 denotes a vertically movable unit that is disposed between the release roller 39 and the fixed-size conveyor 41. It is a dancer role that sags and removes wrinkles. That is, the film 33a is guided downward by the dancer roll 57, then turned upside down and transported to the fixed-size conveyor 41. During this time, the film 33a is twisted by the tension given by the weight of the dancer roll 57. Wrinkles are removed. Reference numeral 58 denotes a loop sensor for detecting a loop of the film 33a formed by the dancer roll 57, and reference numeral 59 denotes a patrol light for displaying an abnormality of each sensor.

FIG. 4 is a schematic diagram for explaining the structure of the film holding device 60. As shown in FIG. Hereinafter, the configuration of the film presser unit 60 will be described with reference to FIGS. The film holding device unit 60 includes a pair of holding arms 61 each having one end rotatably attached thereto, and a lifting mechanism 62 for controlling the holding arms 61 to move up and down to a predetermined height. The film holding device unit 60 is installed on the elevating unit 31 a which can be separately raised and lowered in the gantry 31, and is configured to move up and down together with the transport conveyor 51. Further, a winding roll 61a for facilitating winding the film around the coil is attached to the distal end portion of the holding arm 61. Reference numeral 63 denotes a limit switch attached to a support portion of the presser arm 61. When the presser arm 61 is lowered too much due to a malfunction or the like, the limit switch 63 comes into contact with a predetermined portion (not shown) of the gantry 31 to extremely lower the presser arm 61. Has a function to stop.

Next, the operation of the present embodiment configured as described above will be described with reference to FIGS. The rolled metal sheet rolled to a predetermined thickness by the process line is wound into a cylindrical coil shape by the tension reel 2 (coil winding machine) to form a coil 13 (see FIG. 1). The coil 13 is conveyed by the moving saddle 15 and labeled by a labeler (not shown), and a hoop band 19 is wound by a banding machine 17. Next, the coil 13 is moved to the fixed saddle 7 by the moving saddle 15, the width sensor 22 detects the width in the coil axis direction, and the distance sensor 23.
The height position is detected.

Next, the coil 13 is moved to the fixed saddle 9 by the moving saddle 15. Then, the position of the coil 13 is detected by the displacement sensor 25, and it is confirmed whether or not the coil 13 is placed at a predetermined position with respect to the fixed saddle 15. At this time, if the position of the coil 13 is shifted, the moving saddle 15 is operated to move the coil 13 in the front-back direction, and move the coil 13 to a predetermined position. Next, the servo motor 45 of the fixed-length feed conveyor 41 is driven, and the film 33a is drawn out toward the transport conveyor 51 by a length corresponding to the width of the coil 13. At this time, coil 1
The length corresponding to the width of 3 is based on the data detected by the width sensor 22. When the film 33a is pulled out by a predetermined length, the film 33a is pressed by the cloth holder 47, and in this state, the cutter 49a is moved in the width direction of the film 33a to cut the film 33a.

When the film 33a is cut to a predetermined length, the cloth holder 47 is separated from the film 33a, and the film 33a is transported by the transport conveyor 51 to the center position of the holding arm 61. At this time, the transport conveyor 51 is driven by the EC servo 55. The EC servo 55 rotates by a preset number of rotations based on the information of the width sensor 22, and drives the transport conveyor 51 by a predetermined distance. As a result, the film 33a is moved to a predetermined position. When the film 33a is conveyed to a predetermined position, the nip rollers 53a and 53b descend and press the film 33a against the conveyors 51a and 51b with a predetermined strength. Then, the film 33a by the holding arm 61
Is performed on the coil 13.

FIG. 5 is an explanatory diagram for explaining the operation of covering the coil 13 with the film 33a. Hereinafter, an operation of covering the coil 13 with the film 33a will be described with reference to FIGS. As described above, when the film 33a cut to a predetermined size is set at a predetermined position on the conveyors 51a and 51b, the elevating unit 31a moves the distance sensor 2
3, the distance between the coils 13 is set to a predetermined value, and the distance between the conveyors 51a and 51b and the coil 13 is set to a predetermined value. This predetermined value is a distance set in advance by the height of the coil 13 (the outer diameter of the coil 13). When the distance between the conveyors 51a and 51b and the coil 13 is set to a predetermined value, the presser arm 61 descends and the film 3
3a is pushed down to the coil 13 side. At this time, since the film 33a is pressed by the nip rollers 53a and 53b, the film 33a is gradually pushed out toward the coil 13 as the nip rollers 53a and 53b rotate.

When the presser arm 61 descends and the wrapping roll 61a at the tip thereof contacts the coil 13 and further descends, the presser arm 61 opens right and left, and the wrapping roll 6
1a moves while pressing the film 33a along the outer peripheral surface of the coil 13 (see FIG. 4). Then, when the presser arm 61 is lowered by a predetermined distance, it stops and the coating of the film 33a is completed as shown in FIG.

As described above, according to the present embodiment, the coil 13 can be coated with the film 33a by a simpler device than in the conventional example. Further, the coil 13 is only moved by the moving saddle 15 and does not require transfer or the like, so that workability is good and efficiency is high. Further, in the above embodiment, the film 33a is pulled out by a predetermined length based on the width data of the coil 13 detected by the width sensor 22, cut by the cutter 49a, and the cut coated film is conveyed. Since it has a series of steps of transporting to a predetermined position by the conveyor 51, the film 33a having a required length according to the width of the coil 13 is provided.
Is used, and the cost can be reduced without wasting the film.

In the above embodiment, an example in which the width dimension and the height dimension of the coil 13 are measured by the width sensor 22 and the distance sensor 23 has been described. However, information on these coils 13 controls a process line. Since the process computer stores the information, the information of the process computer may be used.

In the above-described embodiment, the film 33a is pulled out by a predetermined length based on the width data of the coil 13 detected by the width sensor 22, and is cut by the cutter 49a. Although a series of steps of transporting the film to a predetermined position by the transport conveyor 51 is included, the step of detecting the width of the coil 13 by the width sensor 22 is omitted, and the film 3 is removed.
3a may be pulled out to the conveyor 51 by a predetermined length, cut off by the cutter 49a, and the above-described covering operation may be executed as it is. At this time, since the cut film does not move again for positioning, the total time of the coating operation is reduced. In addition, this eliminates the need for the width sensor 22 and a mechanism for adjusting the film placement position of the conveyor 51, thereby simplifying the configuration of the apparatus and reducing the overall cost of the apparatus. Can be. The cutter 49
a to be movable in the longitudinal direction of the film,
a may be cut to a predetermined size.

Embodiment 2 FIG. FIG. 6 is an explanatory diagram showing a main part of another embodiment of the present invention. In the second embodiment, each arm of the two holding arms 70 is constituted by two links connected in series in the free end direction with the connecting portion at the upper end as a base point. According to the present embodiment, the film can be effectively wound along the outer periphery of the coil even for a coil having a large diameter.

Embodiment 3 FIG. 7 is an explanatory diagram of another embodiment of the present invention. The present embodiment is different from the first and second embodiments in that the holding arms 61 and 70 have the film 3
This is made in view of the fact that 3a cannot be pressed against the lower half of the coil 13. In the figure,
Reference numeral 80 denotes a frame 8 arranged in a gate shape with respect to the coil 13.
1 is a movable trolley installed on the upper surface. The movable cart 80 has an arm 83 that can move in the vertical direction, and a winding roll 85 is installed at the tip of the arm 83.

The third embodiment configured as described above
Will be described. While moving the movable cart 80 in the radial direction of the coil 13, the arm 83 is moved up and down to move the winding roll 85 while pressing it against the surface of the coil 13. Thus, the film 33a coated on the surface of the coil 13 can be securely adhered to the surface of the coil 13. In particular, according to this device, it is possible to press the film in the lower portion of the coil 13 below the middle portion in the height direction against the coil 13.

[0033]

As described above in detail, according to the present invention, the coated film is placed on the film temporary mounting table and is discharged downward from the film discharging gap, so that the surface of the rolled metal coil conforms to the surface shape. Since it was pressed down, the equipment cost was low with a simple configuration, and the handling of the coil was easy and suitable for practical use.

Further, since the nip roller is provided on the film temporary mounting table, when the coated film is paid out to the rolled metal coil side, the left and right sides of the coated film can be paid out uniformly.

Further, since the film temporary mounting table is provided with an elevating function, an appropriate film coating can be performed on rolled metal coils of various diameters.

The film pressing means includes a pair of arms having one end rotatably connected thereto, means for raising and lowering the pair of arms, and a film winding roller provided at the other end of each of the arms. With the configuration provided, the coating film can be pressed along the outer peripheral surface of the rolled metal coil with a simple configuration.

Further, since the pair of arms is constituted by a plurality of links each connected in series in the free end direction with the connecting portion as a base point, the coated film can be rolled even on a rolled metal coil having a large diameter. Pressing can be reliably performed along the outer peripheral surface of the metal coil.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a film coating apparatus for a rolled metal coil and a film coating method using the apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a schematic diagram schematically illustrating a side surface of the film coating apparatus according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram schematically illustrating a plane of the film coating apparatus according to the first embodiment of the present invention.

FIG. 4 is a schematic diagram illustrating a configuration of a film pressing device according to the first embodiment of the present invention.

FIG. 5 is a film 33a according to the first embodiment of the present invention.
FIG. 5 is an explanatory diagram for explaining a coating operation on the coil 13 of FIG.

FIG. 6 is an explanatory diagram illustrating a main part of a second embodiment of the present invention.

FIG. 7 is an explanatory diagram illustrating a main part of a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Film coating device 3,5,7,9,11 Fixed saddle 13 Coil 15 Moving saddle 22 Width sensor 23 Distance sensor 31 Stand 31a Elevating part 33 Film roll 33a Coating film 39 Release roller 41 Standard-size conveyor 49 Cutter unit 51 Transport Conveyors 53a, 53b Nip roller 60 Film press device 61 Press arm 61a Winding roll

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Shigeo Ishida 1-2-1 Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd.

Claims (6)

[Claims] 1. A step of transporting a rolled metal coil wound in a cylindrical shape with its end face in a vertical direction and setting the rolled metal coil at a predetermined position; and dispensing a film that opens substantially parallel to the axial direction of the rolled metal coil. A step of mounting the coating film on a film temporary mounting table having a gap and installed above the rolled metal coil conveying line; a step of cutting the coating film into a predetermined width; cutting into a predetermined width Discharging the coated film downward from the film discharging gap and pressing the coated film against the surface of the rolled metal coil along the surface shape. 2. A conveying means for conveying a rolled metal coil wound in a cylindrical shape to a predetermined position with an end face in a vertical direction, and releasing a coated film from a film roll according to a width dimension of the rolled metal coil. Film unwinding means for unwinding a predetermined length of film, film cutting means for cutting the unwrapped coated film, and a film dispensing gap opening substantially parallel to the axial direction of the rolled metal coil, wherein the rolled metal A film temporary mounting table installed above the coil transport line; a film transport means for transporting the cut film to a predetermined position of the film temporary loading table; and a coating transported to a predetermined position of the film temporary loading table. Dispensing a film downward from the film dispensing gap,
A film pressing means for pressing a film against the surface of the rolled metal coil. 3. A nip roller which can be brought into contact with and separated from the edge of the film dispensing gap of the film temporary mounting table,
3. A film coating apparatus for a rolled metal coil according to claim 2, wherein said apparatus is installed in parallel with said edge. 4. The film covering apparatus for a rolled metal coil according to claim 2, wherein the temporary film mounting table has a lifting function. 5. The film pressing means comprises: a pair of arms having one end rotatably connected thereto; means for raising and lowering the pair of arms; and a film winding roller provided at the other end of each of the arms. The film coating apparatus for a rolled metal coil according to any one of claims 2 to 4, further comprising: 6. The apparatus for coating a film of a rolled metal coil according to claim 5, wherein each of the pair of arms comprises a plurality of links connected in series in a free end direction with the connecting portion as a base point. .