JP2006341351A - Shearing machine for belt-like metal plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shearing machine for a belt-like metal plate carrying a sheetlike metal plate in a short cut length without lowering a running speed of a rotary shear line, preventing the sheetlike plate from moving or shifting in a width direction on a conveyer, and also linearly carrying the plate in a short cut length. <P>SOLUTION: The shearing machine for the belt-like metal plate cuts the belt-like metal plate 50 by shearing it by a rotary shear 300 and carries the sheetlike metal plate 51 which has been cut by a runout conveyer 400 provided on an exit-side of the rotary shear 300. The machine is equipped with a free pressing roller 10 along a path line of the plate 51 on the runout conveyer 400 above an end of the conveyer 400 in proximity to the exit-side of the rotary shear 300. The free roller 10 is urged to press it toward the path line on the conveyer 400. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  TECHNICAL FIELD The present invention generally relates to a strip metal plate shearing device, and more specifically, a strip metal plate is cut by a shearing process using a rotary shear, and the sheet metal plate after being cut is placed on the outlet side of the rotary shear. The present invention relates to a shearing device for a belt-shaped metal plate conveyed by a drive conveyor arranged.

  In a conventional strip metal plate shearing device, a sheet metal plate after being cut by a rotary shear is conveyed by a drive conveyor disposed on the exit side of the rotary shear.

  FIG. 7: is a side view which shows roughly the principal part of the conventional shear device of a strip | belt-shaped metal plate.

  As shown in FIG. 7, the rotary shear 300 includes a frame 310 that holds the upper blade 311 and a holder 320 that holds the lower blade 321. In this type of shearing device, the crankshaft 323 attached to the holder 320 is rotationally driven around the pivot point P, so that the frame 310 that holds the upper blade 311 travels in the horizontal direction and the lower blade 321 Rotate and move. As a result, the belt-like metal plate 50 moving in the direction indicated by the arrow W along the pass line L on the support roller 60 is continuously cut and processed into the sheet-like metal plate 51.

  The cut sheet-like metal plate 51 moves onto the run-out conveyor 400 disposed on the exit side of the rotary shear 300, and is placed on the belt 410 driven by the rotary drive shaft 420 and conveyed. As shown in FIG. 7, when the length of the sheet-like metal plate 51 is short, it is difficult for the sheet-like metal plate 51 to move on the belt 410, so the end of the belt 410 and the exit side of the rotary shear 300 Auxiliary rollers 70 are arranged to bridge between the two. Thereby, even if the length of the cut | disconnected sheet-like metal plate 51 is short, the sheet-like metal plate 51 can be moved in the direction shown by arrow X, and can be mounted on the belt 410 and conveyed. At this time, the pass line L1 of the belt 410 is set to a height lower than the pass line L of the rotary shear line so that the cut sheet-like metal plate 51 is easily placed on the belt 410 and conveyed. The

Japanese Patent Laid-Open No. 7-124815 (Patent Document 1) discloses an endless belt having a built-in magnet installed on a sheet exit side of a rotary shear drum, after the steel strip is sheared by a rotary shear drum. The structure of the shearing apparatus of the steel plate conveyed by the conveyor to the next process is disclosed. In this steel plate shearing device, in order to suppress the movement and variation in the width direction of the sheet after being sheared, to accurately cut the steel plate and to allow the straight conveyance of the steel plate, An upper endless belt conveyor with a built-in magnet that has a belt traveling speed that is more advanced than the shear speed of the steel sheet and that can be restrained by magnetic force only in the center of the steel sheet, is located along the steel plate pass line and close to the rotary shear drum. It is installed.
JP-A-7-124815

  However, in the conventional strip metal plate shearing device as shown in FIG. 7, even if the running speed of the run-out conveyor 400 is set higher than the running speed of the rotary shear line, for example, the cutting length is about 500 mm. If it is shorter, the traveling speed of the sheet-like metal plate 51 placed on the free roller 71 decreases, so that the subsequent sheet-like metal plate 51 that has been cut is cut forward at the end of the belt 410. In some cases, it may overlap with the preceding sheet metal plate 51. For this reason, there is a problem that the sheet-like metal plate 51 cannot be continuously conveyed on the belt 410 at intervals.

  In order to avoid this problem, the traveling speed of the rotary shear line, that is, the shearing speed of the rotary shear 300, is such that the sheet-like metal plate 51 can be continuously conveyed on the belt 410 at intervals. Needed to be lowered. As a result, there is a problem that productivity is lowered.

  Further, if the auxiliary roller 70 is removed in order to solve the above problem, there is a problem that the sheet metal plate 51 having a short length does not rest on the belt 410 and falls.

  Further, the cut sheet metal plate 51 is moved by inertia, or the upper blade 311 is moved in the horizontal direction after the cutting, so that the short sheet metal plate 51 is pushed out at the end face of the upper blade 311. Even if it moves and is sent out onto the belt 410, it is not conveyed straight on the belt 410, and there is a problem in that movement or displacement in the width direction occurs. For this reason, it was difficult to align and stack the sheet-like metal plates 51 in a subsequent process.

  The steel plate shearing device disclosed in Japanese Patent Laid-Open No. 7-124815 uses a magnetic force to suppress the movement and variation in the width direction of the sheet-shaped steel plate, enabling the straight conveyance of the sheet-shaped steel plate. However, there is a problem that the metal plate to be conveyed is limited to a magnetic material. Moreover, since it is necessary to incorporate magnets in the upper and lower endless belt conveyors, there is a problem that the equipment cost increases.

  Accordingly, an object of the present invention is to eliminate the above-described problems, and a sheet metal plate having a short cutting length can be conveyed by a conveyor without reducing the traveling speed of the rotary shear line. By providing a strip-shaped metal plate shearing device that can prevent the sheet-shaped metal plate from moving or shifting in the width direction on the upper side and can move the sheet-shaped metal plate with a short cutting length in a straight line. is there.

  A strip metal plate shearing device according to the present invention cuts a strip metal plate by a shearing process using a rotary shear, and conveys the cut sheet metal plate by a drive conveyor disposed on the exit side of the rotary shear. The strip metal plate shearing device has the following characteristics.

  A pressure roller is disposed along the pass line of the sheet metal plate on the drive conveyor, above the end of the drive conveyor close to the exit side of the rotary shear. The pressing roller is urged so as to press toward the pass line on the drive conveyor.

  In the strip metal plate shearing apparatus of the present invention, the cut sheet metal plate is placed on the drive conveyor and conveyed while being sandwiched between the pressing roller and the drive conveyor. For this reason, since the traveling speed of the sheet-like metal plate immediately after being cut does not decrease, the sheet-like metal plate having a short cutting length can be continuously conveyed on the drive conveyor at intervals.

  In addition, immediately after cutting, the sheet metal plate is placed on the drive conveyor while being sandwiched between the pressing roller and the drive conveyor, so the sheet metal plate moves in the width direction on the drive conveyor. It is possible to prevent the occurrence of misalignment. As a result, the cut sheet-like metal plate can be conveyed straight.

  Furthermore, the sheet-like metal plates conveyed straight on the drive conveyor can be easily aligned and stacked in a subsequent process.

  The strip metal plate shearing device according to the present invention guides the cut sheet metal plate between the upper surface of the drive conveyor and the lower surface of the pressure roller between the outlet side of the rotary shear and the pressure roller. It is preferable to further include a guide member.

  In this case, it is preferable that the guide member is disposed along the upper surface of the sheet metal plate after being cut.

  By providing the guide member in this manner, it is possible to prevent the edge of the band-shaped metal plate or the edge of the sheet-shaped metal plate from jumping up during or after shearing of the rotary shear, and the band-shaped metal plate or sheet. The edge of the metal plate can be easily guided between the pressing roller and the drive conveyor.

  Further, in the strip metal plate shearing apparatus according to the present invention, the rotary shear includes a shear upper blade disposed above the strip metal plate to be cut and a shear lower blade disposed below the strip metal plate to be cut. As the lower shear blade rotates, the frame of the rotary shear that holds the upper shear blade moves along the running direction of the strip metal plate so that the running strip metal plate is continuously It is preferable to cut.

  As described above, according to the present invention, a sheet metal plate having a short cutting length can be conveyed by the conveyor without reducing the traveling speed of the rotary shear line, and the width direction of the sheet metal plate on the conveyor. Therefore, it is possible to prevent the sheet-like metal plate having a short cutting length from being conveyed in a straight line, so that productivity can be improved.

  An embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is a side view showing a schematic configuration of a rotary shear line in which a strip metal plate shearing device is incorporated as one embodiment of the present invention.

  As shown in FIG. 1, in the rotary shear line 1, for example, a cold rolled coil steel plate is rewound by an uncoiler 100 as a band-shaped metal plate. The rewound band-shaped metal plate 50 is corrected by the leveler 200, then fed by the pinch roller 250, and continuously cut by the rotary shear 300. The cut sheet-shaped metal plates are conveyed onto the run-out conveyor 400 and then aligned and stacked by the stacking device 500.

  2 to 4 show the main part of the configuration in the vicinity of the rotary shear 300 incorporated in FIG. 1, and a schematic side view sequentially showing each step in the main part of the shearing device for the strip metal plate as one embodiment of the present invention. FIG. FIG. 5 is a schematic side view showing the mechanism of operation in the main part of the strip metal plate shearing apparatus as one embodiment of the present invention, and FIG. 6 is a schematic side view showing the configuration of the crankshaft.

  As shown in FIGS. 2 to 4 and 5, the rotary shear 300 is generally composed of a frame 310, a holder 320, and a rotary shear lower part 330. The upper blade 311 is attached to the frame 310 via a blade holder. The lower blade 321 is attached to the holder 320 via a blade holder. The holder 320 is moved by the rotational drive of the crankshaft 323. As shown in FIG. 6, the crankshaft 323 includes a shaft portion 323 a at both ends having an axis P as an axis as a shaft fulcrum and a central shaft portion 323 b having an axis Q as an axis.

  A vertical slide portion 322 is provided on the side of the holder 320. The vertical slide portion 322 is configured such that the holder 320 moves vertically in the directions indicated by the arrows S and T along the vertical rail 312 provided on the frame 310. A horizontal slide portion 313 is provided below the frame 310. The horizontal slide portion 313 is configured such that the frame 310 moves horizontally in the directions indicated by the arrows U and V along the horizontal rail 331 provided in the rotary shear lower portion 330.

  Since the rotary shear 300 is generally configured as described above, when the crankshaft 323 is driven to rotate in the direction indicated by the arrow R around the axis P, the holder 320 holding the lower blade 321 is removed. It moves vertically in the direction indicated by arrows S and T. Along with this, the frame 310 moves horizontally in the directions indicated by the arrows U and V. When the operation of the rotary shear 300 is intermittently performed, the band-shaped metal plate 50 that travels between the upper blade 311 and the lower blade 321 is sandwiched between the upper blade 311 and the lower blade 321 and is sheared to be continuous. Disconnected.

  As shown in FIGS. 2 to 4, a support roller 60 for feeding the belt-shaped metal plate 50 in the direction indicated by the arrow W is disposed on the entrance side of the rotary shear 300. On the exit side of the rotary shear 300, a run-out conveyor 400 is disposed as a drive conveyor for conveying the cut sheet metal plate. The pass line of the run-out conveyor 400 is set at almost the same height as the pass line L of the rotary shear line. The belt 410 of the run-out conveyor 400 is driven by a rotary drive shaft 420.

  The pressure free roller 10 is attached to the frame 310 of the rotary shear 300 so as to be disposed above the end of the run-out conveyor 400 close to the exit side of the rotary shear 300. The pressure free roller 10 is disposed along a pass line on the run-out conveyor 400 of the sheet-like metal plate after being cut.

  The pressing free roller 10 includes a free roller 11, a lower plate 12, a guide pin 13, an upper plate 14, and a compression spring 15. The free roller 11 is configured to come into contact with the upper surface of the cut sheet metal plate and rotate with the movement of the sheet metal plate. A free roller 11 is attached to the lower plate 12. The guide pin 13 is attached between the lower plate 12 and the upper plate 14. The compression spring 15 is disposed around the guide pin 13 between the lower plate 12 and the upper plate 14. The free roller 11 is urged by the compression spring 15 so as to press toward the pass line on the run-out conveyor 400.

  Further, as a guide member for guiding the cut sheet metal plate between the upper surface of the run-out conveyor 400 and the pressing free roller 10 between the exit side of the rotary shear 300 and the pressing free roller 10. A guide guide plate 20 is provided. The guide guide plate 20 is attached to the frame 310 of the rotary shear 300 so as to be arranged along the upper surface of the sheet metal plate after being cut. In this embodiment, among the free rollers 11 constituting the pressing free roller 10, the guide plate 20 is arranged so as to be close to the outer peripheral surface of the free roller 11 located on the rotary shear 300 side.

  In the shearing device configured as described above, first, as shown in FIG. 2, for example, the tip of the band-shaped metal plate 50 having a plate thickness of about 1.2 to 2.3 mm and a width of about 70 mm is indicated by an arrow W. In the direction shown, for example, it is fed into the rotary shear 300 at a traveling speed of 60 m / min. In order to run and cut the belt-shaped metal plate 50 with a predetermined cutting length, the crankshaft 323 is driven to rotate in the direction indicated by the arrow R from the state shown in FIG. It begins to rise in the direction indicated by arrow S. At this time, the frame 310 of the rotary shear 300 starts to retract in the direction indicated by the arrow U. The state at this time is shown in FIG.

  Thereafter, from the state shown in FIG. 3, the crankshaft 323 is rotationally driven in the direction indicated by the arrow R, whereby the lower blade 321 is rotated and moved further in the direction indicated by the arrow S. At this time, the frame 310 of the rotary shear 300 moves forward in the direction indicated by the arrow V. The state at this time is shown in FIG.

  Then, as shown in FIG. 4, the running strip-shaped metal plate 50 is cut by the shearing process by the rotary shear 300, and the sheet-shaped metal plate 51 is separated from the strip-shaped metal plate 50. After cutting, the crankshaft 323 is driven to rotate in the direction indicated by the arrow R, whereby the lower blade 321 rotates and moves downward in the direction indicated by the arrow T. At this time, since the frame 310 of the rotary shear 300 moves forward in the direction indicated by the arrow V, the rear end edge of the sheet-like metal plate 51 after the end surface of the upper blade 311 is cut is pushed out.

  The extruded sheet-like metal plate 51 is sandwiched between the upper surface of the belt 410 of the run-out conveyor 400 and the lower surface of the free roller 11 of the pressing free roller 10 along the upper surface of the guide guide plate 20. 400 is conveyed. At this time, the conveyance speed of the run-out conveyor 400 is set to be higher than the traveling speed of the rotary shear line, and the free roller 11 of the pressing free roller 10 rotates according to the conveyance speed, so that the sheet metal after being cut The plate 51 is conveyed by the run-out conveyor 400 without lowering the moving speed.

  In this way, the cut sheet-shaped metal plate 51 is placed between the press-free roller 10 and the run-out conveyor 400, and is placed on the run-out conveyor 400, conveyed, and immediately after being cut. Since the traveling speed of the metal sheet 51 does not decrease, the sheet metal sheet 51 having a short cutting length can be continuously conveyed on the run-out conveyor 400 at intervals. For example, when the traveling speed of the rotary shear line is 60 m / min and the distance between the axis P and the axis Q of the crankshaft 323 is 30 mm, even if the cutting length is 500 mm or less, the shortest cutting length is about 150 to 200 mm. However, the sheet-like metal plate 51 can be continuously conveyed on the run-out conveyor 400 at intervals without decreasing the traveling speed.

  Further, immediately after being cut, the sheet-like metal plate 51 is placed on the run-out conveyor 400 in a state of being sandwiched between the pressing free roller 10 and the run-out conveyor 400, so that the sheet-like metal plate is placed on the run-out conveyor 400. Thus, it is possible to prevent 51 from moving or shifting in the width direction. As a result, the cut sheet-like metal plate 51 can be conveyed straight.

  Furthermore, the sheet-like metal plates 51 conveyed straight on the run-out conveyor 400 can be easily aligned and stacked by a stacking device 500 as shown in FIG.

  Furthermore, between the exit side of the rotary shear 300 and the pressure free roller 10, the cut sheet metal plate 51 is guided between the upper surface of the run-out conveyor 400 and the lower surface of the pressure free roller 10. Providing the guide guide plate 20 as a guide member for preventing the front edge of the belt-like metal plate 50 or the front edge of the sheet-like metal plate 51 from jumping up when the rotary shear 300 is sheared or after shearing. Thus, the front edge of the belt-shaped metal plate 50 or the front edge of the sheet-like metal plate 51 can be easily guided between the pressing free roller 10 and the run-out conveyor 400.

  In the above embodiment, the pressing free roller 10 and the guide guide plate 20 are attached to the frame 310 of the rotary shear 300 and interlocked with the horizontal movement of the frame 310 in the directions indicated by the arrows U and V. However, the pressing free roller 10 and the guide guide plate 20 may be provided independently of the rotary shear 300.

  Moreover, although the press free roller 10 includes the free roller 11, it may include a roller that is driven in synchronization with the rotational drive of the run-out conveyor 400. In the above embodiment, the number of the free rollers 11 of the pressing free roller 10 is four, but a single roller having a relatively large diameter may be used, and the number of rollers is not limited. The end of the belt 410 that contributes to conveyance in the run-out conveyor 400 and the axis of the free roller 11 that is located on the rotary shear 300 side of the free roller 11 that constitutes the pressing free roller 10 are substantially the same. The shafts of the free rollers 11 positioned on the rotary shear 300 side may be positioned closer to the rotary shear 300 than the end of the belt 410 on the rotary shear 300 side.

  In the above embodiment, as shown in FIG. 4, the length of the sheet-like metal plate 51 is about the distance between the end of the belt 410 of the run-out conveyor 400 and the cut surfaces of the upper blade 311 and the lower blade 321. However, even the sheet-like metal plate 51 having a cutting length slightly shorter than the distance can be continuously conveyed on the run-out conveyor 400.

  In said embodiment, it arrange | positions so that the end surface of the guide plate 20 may approach along the outer peripheral surface of the free roller 11 located in the rotary shear 300 side among the free rollers 11 which comprise the press free roller 10. FIG. However, the outer peripheral surface of the free roller 11 positioned on the rotary shear 300 side and the end surface of the guide guide plate 20 may be arranged with a space therebetween.

  In the above-described embodiment, the shear lower blade includes a shear upper blade disposed above the band metal plate to be cut and a shear lower blade disposed below the band metal plate to be cut, and the shear lower blade rotates. According to the example, the rotary shear frame that holds the shearing upper blade moves along the traveling direction of the strip metal plate, and applied to the rotary shear of the type that continuously cuts the strip metal plate that is running As described above, even if the present invention is applied to another type of rotary shear, the above-described effects can be achieved.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

It is a side view which shows schematic structure of the rotary shear line in which the shearing apparatus of a strip | belt-shaped metal plate is integrated as one embodiment of this invention. It is a schematic side view which shows a 1st process in the principal part of the shearing apparatus of a strip | belt-shaped metal plate as one embodiment of this invention. It is a schematic side view which shows a 2nd process in the principal part of the shearing apparatus of a strip | belt-shaped metal plate as one embodiment of this invention. It is a schematic side view which shows a 3rd process in the principal part of the shearing apparatus of a strip | belt-shaped metal plate as one embodiment of this invention. It is a schematic side view which shows the mechanism of operation | movement in the principal part of the shearing apparatus of a strip | belt-shaped metal plate as one Embodiment of this invention. It is a schematic side view which shows the structure of a crankshaft in the principal part of the shearing apparatus of a strip | belt-shaped metal plate as one embodiment of this invention. It is a side view which shows roughly the principal part of the conventional shear device of a strip | belt-shaped metal plate.

Explanation of symbols

  1: Rotary shear line, 10: Pressing free roller, 11: Free roller, 15: Compression spring, 20: Intrusion guide plate, 50: Strip metal plate, 51: Sheet metal plate, 300: Rotary shear, 400: Runout Conveyor.

Claims (4)

In a shearing device for a strip metal plate that cuts a strip metal plate by a shearing process by a rotary shear, and conveys the cut sheet metal plate by a drive conveyor disposed on the exit side of the rotary shear,
Above the end of the drive conveyor close to the exit side of the rotary shear, it is arranged along the sheet metal plate pass line on the drive conveyor and presses towards the pass line on the drive conveyor A strip-shaped metal plate shearing device comprising a pressing roller biased in this manner.   A guide member for guiding the cut sheet metal plate between the upper surface of the drive conveyor and the lower surface of the pressing roller is further provided between the exit side of the rotary shear and the pressing roller. The strip-shaped metal plate shearing device according to claim 1, wherein:   The strip metal plate shearing device according to claim 2, wherein the guide member is disposed along the upper surface of the sheet metal plate after being cut.   The rotary shear includes a shear upper blade disposed above the band metal plate to be cut and a shear lower blade disposed below the band metal plate to be cut, and the shear lower blade rotates. Accordingly, the traveling strip metal plate is continuously cut by moving the frame of the rotary shear holding the shear upper blade along the traveling direction of the strip metal plate. The strip metal plate shearing device according to any one of claims 1 to 3.

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