Metal plate slitter apparatus capable of laminating film

Abstract

The present invention relates to a slitter apparatus for cutting a metal panel in the longitudinal direction and winding same in a roll form. The slitter apparatus of the present invention comprises: an uncoiler on which a coil-type metal plate supplied in a wound state is mounted so as to be unwound therefrom; a slitter device, which cuts, in parallel and in the longitudinal direction, a metal panel unwound from the uncoiler, so as to form a metal panel having a width smaller than that in the state of being wound around the uncoiler; a recoiler for winding, into a coil form, the metal panel cut by the slitter device; and a film supply device for supplying a synthetic resin film to the recoiler so that the synthetic resin film is laminated between layers of the metal panel wound around the recoiler, wherein the metal panel cut by the slitter device is fed onto and wound around the recoiler, and the film supply device supplies the film having a width less than or equal to the width of the cut metal panel, such that the film is wound around the recoiler together with the metal panel while being disposed between layers of the cut metal panel.

Description

Slitter device for metal plates capable of film lamination

[0001] This invention relates to a slitter device for metal sheets, and more particularly, to a slitter device for cutting a long sheet along its length to produce a narrow sheet.

[0002] A slitter device is used as a device for cutting metal sheets supplied from a manufacturer and processing them into sheets of a required width.

[0003] As a slitting device, there is disclosed a device entitled "Slitter in which a cutter and a buffer ring for slitting are connected to a hydraulic expansion shaft" disclosed in Korean Patent Publication No. 10-1215671.

[0004] Manufacturers of sheet metal process metal ingots to produce long sheets, which are then wound into rolls and supplied.

[0005] A processing company that processes metal sheets supplied from a manufacturer into the required width unrolls the metal sheets from the rolls supplied from the manufacturer, flattens them, cuts the metal sheets along the length to the required width, and then rerolls them into rolls and transports them to the customer.

[0006] Depending on the product to be manufactured from metal sheets, if the surface of the metal sheets cut and wound by the processing company is contaminated with foreign substances or scratches occur, this may have a negative impact on the quality of the product.

[0007] Therefore, in the case of metal sheets that require high quality, the processing company slits the metal sheets, winds them into rolls, and then packages them to prevent foreign substances from penetrating. However, the surface can be damaged by friction between the metal sheets that are wound together, and foreign substances can also penetrate between the metal sheets during the packaging process.

[0008] The present invention aims to provide a slitter device for cutting a long metal plate along its length to produce a narrow plate and winding the plate onto a roll.

[0009] Specifically, the invention aims to provide a slitting device that unrolls a metal plate supplied in a roll form, cuts it lengthwise to process it into a narrow width, and then rewinds the processed plate into a roll again, while protecting the surface of the metal plate from contamination or damage.

[0010] The problem to be solved by the invention described above is achieved by a slitter device according to the invention that cuts a metal plate along its length and winds it into a roll shape.

[0011] The slitter device of this invention is,

[0012] An uncoiler in which a coil of metal sheet supplied in a coiled state is mounted and unwound;

[0013] A slitter that cuts a metal panel lengthwise parallel to form a metal panel of a smaller width than that in which it is wound on an uncoiler;

[0014] A recoiler that winds the metal panel cut by the slitter into a coil; and

[0015] A film supply mechanism that supplies a synthetic resin film to a recoiler so that the synthetic resin film is laminated between metal panels wound on the recoiler.

[0016] It consists of, including,

[0017] The metal panels cut from the slitter are fed into a recoiler and wound, and the film supply mechanism supplies a film having a width less than the width of the cut metal panels so that the film is placed between the cut metal panels and wound together with the metal panels onto the recoiler.

[0018] In the slitter device according to this invention, a narrowly cut metal panel is wound around a recoiler, and a film is placed between the metal panels to be wound together, so that the surface of the wound metal panel is covered and protected by the film, so that the surface of the metal panel is not damaged or contaminated during the packaging process or transport process.

[0019] In particular, since the process of covering the surface of the metal panel with a film is not performed as a separate process but is performed together with the process of winding the metal panel onto a recoiler after slitting the metal panel, the process is simple, the cost of covering the film is minimized, and contamination of the metal panel is minimized.

[0020] As an additional feature of this invention, in the slitter device of this invention,

[0021] The film supply mechanism may be configured to be positioned opposite the slitter mechanism with the recoiler in between, and to supply a non-adhesive film to the recoiler in a direction opposite to the flow direction of the metal panel supplied from the slitter mechanism to the recoiler.

[0022] According to this configuration, since the film supply mechanism is installed at a point beyond the end of the flow direction of the metal panel in a conventionally used slitter device, the slitter device of the present invention can be configured by adding the film supply mechanism without changing or rearranging the various mechanisms constituting the conventional slitter device.

[0023] In a typical slitter device, metal sheets are supplied in the form of coils, and uncoiling of the metal sheets and flattening in a leveler are performed. Therefore, several pieces of equipment and devices, from the uncoiler to the slitter, are arranged in a single line in the direction of transport of the metal sheets.

[0024] According to an additional feature of this invention, the film supply mechanism is arranged in the opposite direction to the slitter to supply the film to the recoiler, so that there is no need to change or rearrange existing equipment.

[0025] In addition, since the film is supplied to the recoiler and wound together with the metal plate while the slit metal plate is being wound on the recoiler, it is possible to use a non-adhesive film without the need to impart adhesiveness to the film or apply an adhesive or tackifier to the metal plate so that the film is attached to the metal plate during transport of the metal plate.

[0026] Therefore, the process of applying an adhesive to impart adhesion is omitted, and there is no concern that the adhesive will remain on the surface of the metal plate and contaminate the metal plate.

[0027] In particular, when slitting a metal sheet with a film attached, the residue from cutting the film during slitting does not contaminate the metal sheet or cause the film to be deformed during the process.

[0028] As an additional feature of this invention, in the slitter device of this invention,

[0029] In the slitter mechanism, a metal panel is cut into multiple pieces, and the multiple cut metal panels are fed into the recoiler in parallel to each other and wound coaxially.

[0030] The film supply mechanism may be configured such that a plurality of rolls of film are mounted side by side and spaced apart from each other on a single rotating shaft, and the film is unwound from the rolls of film and wound onto a recoiler together with each cut metal panel, and is laminated between the metal panels.

[0031] According to this configuration, the slitter cuts the metal sheet lengthwise into a plurality of pieces, and the cut metal sheets are coaxially wound together on the recoiler to form a roll of a plurality of metal sheets. The film supply mechanism supplies the film to the plurality of metal sheets so that the film is placed between the metal sheets.

[0032] Accordingly, even in a configuration where a metal plate is cut into multiple pieces, the film is supplied by one rotating shaft, so the configuration of the equipment is very simple and its control is easy.

[0033] As an additional feature of this invention, in the slitter device of this invention,

[0034] The slitter mechanism is provided with two rotating shafts extending parallel to each other and rotating in opposite directions to transport a metal sheet placed therebetween downstream, and a plurality of cutting blades are arranged at intervals from each other on each rotating shaft, and the cutting blades of the two rotating shafts are arranged on both sides of the longitudinal direction of the rotating shaft with the cutting surface of the metal sheet interposed therebetween to cut the metal sheet in the longitudinal direction.

[0035] As an embodiment of these additional features, in the slitter device of the present invention,

[0036] A spacer is arranged between the cutting blades of each rotating shaft, and the position and spacing of the cutting blades in the longitudinal direction of each rotating shaft are adjusted by adjusting at least one of the number and width of the spacers, and a support ring may be attached to the surface of all or part of the spacers, on which a portion of the metal sheet that is not to be cut is supported by frictional force.

[0037] According to this configuration, when cutting a metal sheet into multiple pieces in the slitter device of the present invention, the position of the cutting blade can be easily adjusted by adjusting the width or number of spacers mounted on the slitter mechanism according to the size of the metal sheet supplied from the uncoiler and the specifications of the metal sheet to be cut.

[0038] In particular, by attaching a support ring to these spacers and applying frictional force to the metal sheet, it becomes easy to attach the support ring according to the specifications of the metal sheet to be cut and apply frictional force to the metal sheet.

[0039] As an additional feature of this invention, in the slitter device of this invention,

[0040] In the film supply mechanism, the rotating shaft on which the film roll is mounted can rotate freely, and the film can be configured to be laminated between metal panels on which the film is wound onto the recoiler, and the shaft on which the film roll is mounted rotates while the film is wound onto the recoiler, thereby unwinding the film.

[0041] In this configuration, a brake may be provided to provide resistance to the free rotation of the rotation shaft of the film supply mechanism so that the rotation shaft does not rotate more than the speed at which the film is unwound from the film roll and to apply tension to the film.

[0042] In this configuration, since the rotation axis of the film supply mechanism rotates synchronously with the rotation of the recoiler, the film supply speed does not need to be synchronized with the supply speed of the metal plate being wound on the recoiler, and in particular, since the film is wound together with the metal plate while applying an appropriate tension to the film, the film and the metal plate are brought into close contact.

[0043] As an additional feature of this invention, in the slitter device of this invention,

[0044] The film supply mechanism may be configured to include a movable frame equipped with a rotating shaft, a fixed frame fixed to the ground, and a moving mechanism installed on the fixed frame to move the movable frame in a direction perpendicular to the direction in which the film is supplied, and the film supplied to the recoiler is aligned with the metal plate by moving the movable frame by the moving mechanism.

[0045] Accordingly, even if the work of installing the film roll in the film supply mechanism is not performed precisely, alignment of the film and the metal plate can be achieved by adjusting the position of the movable frame after installing the film roll.

[0046] As an additional feature of this invention, in the slitter device according to this invention,

[0047] The recoiler comprises a main shaft that is driven to rotate and on which a metal sheet is wound, and a pressurizing shaft that is movable between a pressurized state in which it is placed parallel to the main shaft and rotates and a spaced state in which it is spaced from the main shaft, and has a pressurizing surface that presses the metal sheet wound on the main shaft in the pressurized state against the main shaft.

[0048] The main shaft may be configured to expand and contract in diameter, so that it is in an expanded state when winding the metal sheet, and in a contracted state when removing the metal sheet wound from the main shaft.

[0049] According to this configuration, the pressurizing surface of the pressurizing shaft presses the metal plate against the main shaft, thereby forming a roll in which the metal plate and the film are in close contact with each other. In addition, when removing the roll of the metal plate on which the film is laminated from the main shaft, the main shaft contracts, thereby enabling simple removal of the roll.

[0050] In addition, in the slitter device according to this invention, the film supply mechanism may be configured such that a plurality of rotational axes on which rolls of film are mounted are provided, the plurality of rotational axes are arranged parallel to each other, and when all of the rolls of film mounted on one rotational axis are used, the rolls of film mounted on another rotational axis are supplied to the recoiler.

[0051] According to this configuration, when the roll of film mounted on one rotation axis is exhausted, the roll of film mounted on another rotation axis can be used without replacing the roll of film, thereby minimizing interruption of the process.

[0052] FIG. 1 is a drawing schematically showing the overall configuration of a slitter device according to one embodiment of the present invention.

[0053] FIG. 2 is a cross-sectional view showing a state in which a cutting blade of a slitter is mounted on a main shaft in a slitter device according to one embodiment of the present invention.

[0054] FIG. 3 is a side view illustrating a recoiler and a film supply mechanism in a slitter device according to one embodiment of the present invention.

[0055] FIG. 4 is a drawing taken along arrow A of FIG. 3, showing a front view of a recoiler in a slitter device according to one embodiment of the present invention.

[0056] FIG. 5 is a drawing taken along arrow B of FIG. 3, showing a front view of a film supply mechanism in a slitter device according to one embodiment of the present invention.

[0057] Hereinafter, the configuration and operation of a slitting device of an embodiment of the present invention for carrying out the present invention will be described with reference to the attached drawings.

[0058] First, referring to Fig. 1, the overall configuration and operation of the slitter device of this embodiment will be described.

[0059] In the slitter device, an uncoiler (11) is provided to which a metal plate in a coil state before slitting processing is mounted and unwound, and a leveler (20) is arranged downstream of the uncoiler (11) to level the metal plate (1) unwound from the uncoiler (1).

[0060] Between the uncoiler (11) and the leveler (20), a first looper (Looper, 12) is provided to align the metal plate (1) in the width direction and buffer the metal plate in consideration of the case where the transport speed of the metal plate released from the uncoiler (11) and the transport speed of the metal plate introduced into the leveler (20) do not exactly match, and a first pinch roll (13) is provided downstream of the first looper (12) to apply a traction force to transport the metal plate (1) backward so that it is fed into the leveler (20).

[0061] The first looper (12) is provided as a space in which a metal plate released from the uncoiler (11) can be placed in a state in which it sags downward due to its own weight, and the first pinch roller (13) is configured such that two rollers are placed facing each other and rotate to pressurize and transport the metal plate (1) placed between them downward.

[0062] The leveler (20) is composed of an upper roll set and a lower roll set, each of which has a plurality of rollers arranged in parallel, and the metal plate (1) is processed flat by receiving a bending stress that is repeated and changes in direction alternately while passing alternately between the rollers forming the upper roll set and the lower roll set.

[0063] The leading edge of the metal plate (1) that has been released from the uncoiler (11) and passed through the leveler (20) is cut and removed at the entry cutter (31) located downstream of the leveler (20). Since the metal plate manufactured by rolling, etc. at a manufacturer has an uneven structure and defects at the leading edge, the leading edge is removed at the entry cutter (31).

[0064] The entry cutter (31) is composed of an upper cutting blade and a lower cutting blade extending in the width direction of the metal plate (1), and cuts along the width direction of the metal plate.

[0065] The metal plate (1) passes through an embossing roll (32) after the leading edge is removed from the entry cutter (31). The embossing roll (32) is composed of a pair of rollers arranged vertically, and marks such as patterns or letters required by the customer of the metal plate are formed in intaglio and relief on the surface of the rollers, respectively, so that the intaglio or relief marks are transferred to the surface of the metal plate.

[0066] The configuration and operation of the uncoiler (11), first looper (12), first pinch roll (13), leveler (20), entry cutter (31), and embossing roller (32) described above are known, so a detailed description thereof is omitted.

[0067] The metal plate (1) that has been flattened by passing through the leveler (20) in this way enters the slitter mechanism (40) and is cut along the length direction to be divided into a plurality of metal plates (2) having a width smaller than that of the metal plate (1) supplied through the uncoiler (11).

[0068] Although the slitter mechanism (40) is known, its schematic configuration is described with reference to Fig. 2, which illustrates a part of its configuration.

[0069] The slitter mechanism (40) is provided with two rotational axes (41, 42) that are positioned vertically and extend in parallel. The upper rotational axes (41) and the lower rotational axes (42) rotate in opposite directions to transport the metal plate (1) placed between them downstream, and a plurality of cutting blades (43, 44) that are positioned at intervals on each of the rotational axes (41, 42) engage with each other to cut the metal plate (1) in the longitudinal direction.

[0070] One cutting blade (43) placed on the upper rotation axis (41) and one cutting blade (44) placed on the lower rotation axis (42) are placed on both sides of the rotation axis (41, 42) in the longitudinal direction with the position of the cutting surface (47) in between on the metal plate (1).

[0071] Spacers (45-1 to 45-3) of various widths are arranged between the cutting blades (43, 44). By adjusting the number and width of the spacers (45-1 to 45-3), the positions and spacing of the cutting blades (43, 44) in the longitudinal direction of the upper and lower rotation axes (41, 42) are adjusted.

[0072] In addition, a rubber support ring (46) is attached to the surface of some spacers (45-1, 45-2), so that the uncut portion of the metal plate (1) is supported by the surface of the support ring (46) and is transported downstream through the slitter mechanism (40) by frictional force with the support ring (46).

[0073] The rotation axis (41, 42) of the slitter mechanism (40) is driven to rotate by a driving motor, but its illustration is omitted in the drawing.

[0074] Meanwhile, in the slitter device of this embodiment, the slitter mechanism (40) is illustrated and described as slitting one metal panel (1) into a plurality of metal plates (2), but it is also possible to slit the metal panel into one metal plate having a required width by cutting only the widthwise ends of the metal panel.

[0075] Referring again to FIG. 1, a plurality of metal plates (2) cut to have a small width by a slitter mechanism (40) are transported downstream in parallel to each other and wound on a recoiler (60).

[0076] Between the slitter mechanism (40) and the recoiler (60), a second looper (51), a second pinch roller (52), a pull-out cutter (53), and an adjustment roller set (54) are provided sequentially from the upstream.

[0077] The second looper (51), like the first looper (12), is provided as a space extending downward to perform a buffering function to accommodate the mismatch in the widthwise alignment and transport speed of the metal plate (2) being transported downstream through the slitter (40).

[0078] The second pinch roller (52), like the first pinch roller (13), is configured with two rollers facing each other and rotating to apply a traction force so that the metal plate (2) placed between them is transported downstream.

[0079] The take-out cutter (53) is configured like the entry cutter (31) to cut the metal plate (2) along the width direction. The take-out cutter (53) cuts the metal plate (2) cut by the slitter mechanism (40) to the width required by the customer to the length required by the customer.

[0080] The metal plate (2) cut in this way and wound again in the recoiler (60) placed downstream is supplied to the demander as a coil (4) of one metal plate with the length required by the demander.

[0081] The metal plate (2) that has passed through the drawing cutter (53) passes through the adjusting roller set (54) and is wound into a coil shape in the recoiler (60).

[0082] The adjusting roller set (54) consists of a plurality of rollers of different diameters arranged vertically and rotating to guide the metal plate (2) placed between them to be wound around the recoiler (60).

[0083] The adjusting roller set (54) not only has a simple guiding function, but also adjusts the rotation speed so that an appropriate longitudinal tensile force is applied to the metal plate (2) being pulled and wound by the recoiler (60).

[0084] The cut metal plate (2) is wound on a recoiler (60) while passing through a set of adjustment rollers (54), and a film supply mechanism (70) is arranged on the downstream side of the recoiler (60), so that a film (3) is supplied from a film roll (4) mounted on the film supply mechanism (70) and wound on the recoiler (60) together with the cut metal plate (2), so that the film (3) is placed between the metal plates (2).

[0085] The configuration of the recoiler (60) is described with reference to FIGS. 3 and 4.

[0086] The recoiler (60) is composed of a main shaft (61) on which a cut metal plate (2) is directly wound, a driving mechanism (62) comprising a driving motor and a reducer that rotate the main shaft, a pressing shaft (63) that is arranged parallel to the main shaft (61) and pressurizes and rotates the metal plate (2) wound on the main shaft (61), a pressing mechanism (65) that pressurizes and rotates the pressing shaft (63) relative to the main shaft, and a frame (66) on which these are mounted.

[0087] The main shaft (61) is configured in the form of a cylindrical drum, and one end (611) of the main shaft in the longitudinal direction is configured as a free end so that a roll (2') of a rolled metal plate can be removed, and the other end (612) is rotatably supported through a rotary shaft (614) installed through a frame (66), and a driving mechanism (65) composed of a driving motor and a reducer on the opposite side of the frame is coupled to the rotary shaft (614).

[0088] The outer surface of the main shaft (61) protrudes or contracts in the diametrical direction, and a plurality of extension pieces (613) having the same curvature as the inner surface of the roll (2') of the metal plate are arranged in parallel along the circumferential direction.

[0089] The expansion member (613) is wound with the metal plate (2) in an expanded state, and when the winding of the metal plate is completed and the roll (2') of the metal plate is removed, the metal plate can be removed from the main shaft (61) by contracting.

[0090] A wedge (not shown) that moves in the longitudinal direction of the main shaft is built into the inside of the main shaft (61), so that it comes into contact with the expansion piece (613) and pushes the expansion piece in the diametric direction to expand or contract, thereby causing the expansion piece (613) to contract diametrically inward. Since this wedge mechanism is well known, it is not shown or described here.

[0091] A pressurizing shaft (63) arranged on the upper side of the main shaft (61) in parallel with the main shaft presses the metal plate (2) wound on the main shaft in the diametric direction with respect to the main shaft.

[0092] The compression shaft (63) is hingedly connected to a post (661) forming a frame. The posts (661) are arranged vertically at both ends of the longitudinal direction of the compression shaft (63), and a hinge (662) is installed at each of the upper ends.

[0093] Each hinge (662) has a link (651) rotatably coupled to it as an element forming a pressurizing mechanism (65), and a pressurizing shaft (63) is freely coupled to the free end of the link (651) so as to be rotatable. The hinge shaft (652) of one link (651) extends to the opposite side of the post (661), and a pressurizing bar (653) is coupled thereto.

[0094] As an element forming a pressurizing mechanism, a pneumatic cylinder (654) is provided in a state in which one end is freely rotatable and connected to a frame (66), and a piston (655) of the pneumatic cylinder (654) is connected to a pressurizing bar (653).

[0095] Accordingly, when the pneumatic cylinder (654) pushes the pressure bar (653), the hinge axis (652) rotates, and the pressure axis (63) is pressed against the main axis (61) to pressurize the metal plate (2), or the pressure axis (63) is separated from the main axis (61).

[0096] A cylindrical contact ring (631) made of elastic material having the same width as the metal plate (2) is provided on the outer surface of the pressurizing shaft (63) so as to come into contact with the metal plate (2), so that the contact ring presses the metal plate without causing damage to the metal plate by coming into contact with the metal plate (2).

[0097] Between the contact rings (631), a circular guide plate (632) is placed between the metal plates (2) to contact the side of the metal plate (2) wound on the main shaft (61) and guide the metal plate (2) wound on the main shaft (61) so that it is wound without being misaligned in the longitudinal direction of the main shaft (61).

[0098] The configuration of the film supply mechanism (70) is described with reference to FIGS. 3 and 5.

[0099] As a film supply mechanism (70), a first shaft (71) and a second shaft (72) on which a roll (4) of a film (3) is mounted are provided, and first and second guide rollers (73, 74) are provided to guide the film (3) released from the roll (4) of the film to the recoiler (60).

[0100] A movable frame (75) on which a first axis (71), a second axis (72) and first and second guide rollers (73, 74) are arranged and a fixed frame (76) placed on the ground are provided.

[0101] A support roller (751) that rotates along the longitudinal direction of the first and second axes (71, 72) is provided on the lower surface of the movable frame (75), and a rail (761) is provided along the longitudinal direction of the first and second axes (71, 72) on the upper surface of the fixed frame (76).

[0102] Accordingly, the movable frame (75) is moved along the longitudinal direction of the first and second axes (71, 72) with respect to the fixed frame (76), so that the roll (4) of the film mounted on the first axis (71) or the second axis (72) is positioned so as to align with the position of the metal plate (2) wound on the recoiler (60).

[0103] A linear movement mechanism (78) comprising a drive motor, a reducer, a screw mechanism, and a push bar (781) for linearly moving a movable frame (75) is provided on a fixed frame (76), so that the push bar (781) protrudes or contracts from the linear movement mechanism (78) by rotation of the drive motor to move the movable frame (75).

[0104] The first axis (71) and the second axis (72) are each freely rotatably mounted on posts (752) extending upward from both ends of the upper surface of the movable frame (75). The upper end (753) of the post (752) is configured to be detachable, so that the upper end (753) can be detached and the first and second axes (71, 72) can be detached from the post (752).

[0105] With the first and second axes (71, 72) separated from the post (752), the film roll (4) is inserted into the first and second axes (71, 72), mounted again on the post (752), and then the upper part (753) is joined.

[0106] A brake (77) is mounted on one end of the first shaft (71) and the second shaft (72) to provide resistance to rotation of the first shaft (71) and the second shaft (72).

[0107] A first gear (711, 721) is provided at the ends of the first shaft (71) and the second shaft (72), and a second gear (771) that meshes with the first gear is provided at the brake (77), so that the rotation of the first shaft (71) and the second shaft (72) is transmitted to the brake (77), and a constant rotational resistance force is applied by the brake (77).

[0108] The brake (77) is composed of a powder clutch, but is not limited thereto and may also be composed of a magnetic clutch or a hydraulic clutch.

[0109] When the film (3) is released from the roll (4) of the film mounted on the first shaft (71) or the second shaft (72) by the action of the brake (77), tension is applied to the film (3) without the first shaft (71) or the second shaft (72) rotating at a speed exceeding the speed at which the film is released.

[0110] The first guide roller (73) is placed on the lower side of the movable frame (75) closer to the recoiler (60).

[0111] The film (3) unwound from the film roll (4) mounted on the first or second axis (71, 72) is wound on the roll (4') of the metal plate from the lower side, not the upper side where the metal plate (2) is wound, on the main axis (61) of the recoiler by the first guide roller (73).

[0112] A second guide roller (74) is arranged between the second shaft (72) and the first guide roller (73), so that when the film roller (4) is mounted on the second shaft (72) and the film (3) is supplied, the film (3) supplied to the recoiler (60) is guided to the first guide roller (73).

[0113] The operation of a slitter device having the above configuration is described.

[0114] First, a coil of aluminum plate having a width of 1200 mm and a thickness of 2.0 mm was prepared as a metal plate (1) to be slit and mounted on an uncoiler (11).

[0115] An aluminum plate (1) is taken out from a coil of aluminum plate mounted on an uncoiler (10), the tip is engaged with a first pinch roll (13), and the first pinch roll (13) is driven to rotate, thereby causing the aluminum plate (1) to advance downstream from the uncoiler (10).

[0116] After the aluminum plate (1) is processed flat by passing through the leveler (20) and the leading edge is cut by the entry cutter (31), it passes through the embossing roll (32). If there is no pattern or letter to be embossed on the aluminum plate (1), the rollers forming the embossing roll (32) are spaced apart from each other and do not operate.

[0117] The aluminum plate (1) that has passed through the embossing roll (32) passes through the slitter mechanism (40). The slitter mechanism is provided with three cutting blades (43, 44) each on the upper rotation shaft (41) and the lower rotation shaft (43), so that the aluminum plate (1) is transported downstream in a state of being divided into four pieces of 300 mm in width.

[0118] The cut aluminum plate (2) is pulled downstream by the second pinch roller (52) and wound onto the main shaft (61) of the recoiler (60) through the adjusting roller set (54).

[0119] In the recoiler (60), the pressurizing shaft (63) is separated from the main shaft (61) by the rotation of the pressurizing mechanism (65) due to the expansion of the pneumatic cylinder (654), and in this state, the tip of the aluminum plate (2) is coupled to the main shaft (61).

[0120] In addition, the first shaft (71) of the film supply mechanism (70) is separated from the post (752), and after four film rolls (4) are mounted, it is mounted on the post (752) again, and the film (3) is released from each film roll (4) and passed through the first guide roller (73), and then the leading end is attached to the aluminum plate (2).

[0121] As the film (3), a polyethylene film having a thickness of 50 ㎛ and a width of 300 mm, which is the same width as the cut aluminum plate (2), was used.

[0122] In this embodiment, aluminum plates (1, 2) of specific thickness and width and films (3) of specific material and thickness are used, but the specifications such as the material and thickness of the metal plates and the required width and the thickness and material of the films may be changed according to the specifications required by the customer.

[0123] Meanwhile, in the slitting device of this embodiment, a film (3) having the same width as the slit metal plate (2) is used to cover the entire surface of the metal plate, but a film having a width smaller than the width of the slit metal plate may be used depending on the request of the customer.

[0124] For example, when performing processing such as welding on the widthwise end of a slit metal plate at a demand site, by using a film with a narrower width than the metal plate, the film is not laminated on both ends of the metal plate, so welding or other work can be performed without separating the entire film from the metal plate.

[0125] The aluminum plate (2) is wound from the upper side of the main shaft (61), and the film (3) is wound from the lower side of the main shaft (61).

[0126] In this way, when the narrowly slit aluminum plate (2) is wound around the main shaft (61), the film (3) is also wound, and the film (3) is placed between the wound aluminum plates (2).

[0127] Accordingly, a non-adhesive film is placed between the aluminum plates (2) to protect the surface of the plates without applying an adhesive to the aluminum plate (2) or using an adhesive film.

[0128] When an aluminum plate (2) of the length requested by the customer is cut by the slitter device (60) and transported, the extraction cutter (53) cuts the aluminum plate (2) at a position of the corresponding length.

[0129] When the aluminum plate (2) with the rear end cut is all wound around the main shaft (61), the rotation of the main shaft (61) is stopped and the film (3) is cut, and then the roll (4) of the aluminum plate with the film (3) wound around it is pulled out from the main shaft (61).

[0130] When the expansion piece (613) of the main shaft is contracted prior to withdrawal, a gap is created between the expansion piece (613) and the inner diameter of the roll (4) of the aluminum plate, so that the roll (4) of the aluminum plate can be easily withdrawn from the main shaft (61).

[0131] The roll (4) of the extracted aluminum plate is transported after being packed with packaging material to prevent contamination and damage.

[0132] A roll (4) of the same film as that of the first shaft (71) is mounted on the second shaft (72) of the film supply mechanism, and when the roll (4) of the film wound on the first shaft (71) is exhausted, the film (3) is unwound from the second shaft (72) and passed sequentially through the second guide roller (74) and the first guide roller (73) to be attached to an aluminum plate (2) wound on the main shaft (61) of the recoiler or attached to the rear end of the film (3) unwound from the first shaft (71) to be wound.

[0133] Meanwhile, in this embodiment, two axes (71, 72) are provided to load and unwind the film roll (4) on the film supply mechanism (70), but only one axis is provided, and when the film runs out, the film roll (4) can be wound again on one axis and work can be resumed.

[0134] The configuration and operation of one embodiment of the present invention have been described above. However, the present invention is not limited to the configuration of this embodiment, and various changes and additions of components are possible within the scope described in the claims.

Claims

1. A slitter device that cuts a metal panel along its length and winds it into a roll shape. An uncoiler in which a coil of metal sheet is supplied in a coiled state and is unwound; A slitter mechanism for cutting a metal panel released from an uncoiler in a longitudinal direction parallel to the metal panel to form a metal panel having a smaller width than that in which it was wound on the uncoiler; A recoiler for winding a metal panel cut by a slitter mechanism into a coil shape; and A film supply mechanism that supplies a synthetic resin film to a recoiler so that the synthetic resin film is laminated between metal panels that are wound on the recoiler. Consists of including, A slitter device in which a metal panel cut from a slitter mechanism is fed into a recoiler and wound, and a film supply mechanism supplies a film having a width less than the width of the cut metal panels so that the film is placed between the cut metal panels and wound together with the metal panels onto the recoiler.

2. In claim 1, A slitter device, wherein the film supply mechanism is arranged opposite the slitter mechanism with the recoiler in between, and supplies a non-stick film to the recoiler in the opposite direction to the flow direction of the metal panel supplied from the slitter mechanism to the recoiler.

3. In claim 1 or claim 2, In the slitter mechanism, a metal panel is cut into multiple pieces, and the multiple cut metal panels are fed into the recoiler parallel to each other and wound coaxially. A film supply mechanism is a slitter device in which a plurality of rolls of film are mounted side by side and spaced apart from each other on a single rotating shaft, and the film is unwound from the rolls of film and wound onto a recoiler together with each cut metal panel, and is laminated between the metal panels.

4. In any one of claims 1 to 3, A slitter device having two rotating shafts extending parallel to each other and rotating in opposite directions to transport a metal sheet placed therebetween downstream, a plurality of cutting blades arranged at intervals from each other on each rotating shaft, and the cutting blades of the two rotating shafts are arranged on both sides of the longitudinal direction of the rotating shaft with the cutting surface of the metal sheet interposed therebetween to cut the metal sheet in the longitudinal direction.

5. In claim 4, A spacer is placed between the cutting blades of each rotation axis, and by adjusting one or more of the number and width of the spacers, the position and spacing of the cutting blades in the longitudinal direction of each rotation axis are adjusted. A slitter device, wherein a support ring is attached to the surface of all or part of the spacer, the uncut portion of the metal sheet being supported by frictional force.

6. In any one of claims 1 to 5, A slitter device, wherein a rotating shaft on which a roll of film is mounted in a film supply mechanism is freely rotatable, and the film is laminated between metal panels on which the film is wound on a recoiler, and the shaft on which the roll of film is mounted rotates while the film is wound on the recoiler, thereby unwinding the film.

7. In claim 6, A slitter device having a brake that provides resistance to the free rotation of the rotation shaft of a film supply mechanism, thereby preventing the rotation shaft from rotating more than the speed at which the film is unwound from the film roll, and applying tension to the film.

8. In any one of claims 1 to 7, A slitter device having a film supply mechanism comprising a movable frame equipped with a rotating shaft, a fixed frame fixed to the ground, and a moving mechanism installed on the fixed frame to move the movable frame in a direction perpendicular to the direction of supply of the film, wherein the film supplied to the recoiler is aligned with the metal plate by moving the movable frame by the moving mechanism.

9. In any one of claims 1 to 8, The recoiler comprises a main shaft that is driven to rotate and on which a metal sheet is wound, and a pressurizing shaft that is movable between a pressurized state in which it is placed parallel to the main shaft and rotates and a spaced state in which it is spaced from the main shaft, and has a pressurizing surface that presses the metal sheet wound on the main shaft in the pressurized state against the main shaft. A slitter device, wherein the spindle is configured to expand and contract in diameter, so that the spindle is in an expanded state when winding a metal sheet, and is in a contracted state when removing the metal sheet wound from the spindle.

10. In any one of claims 1 to 9, A slitter device, wherein a film supply mechanism is provided with a plurality of rotating shafts on which rolls of film are mounted, the plurality of rotating shafts are arranged parallel to each other, and when all of the rolls of film mounted on one rotating shaft are used, the rolls of film mounted on another rotating shaft are supplied to a recoiler.

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