KR20070075251A - Crop removing device and method, and continuous rolling equipment and continuous rolling method - Google Patents

Abstract

A crop removing device and a crop removing method, and a continuous rolling apparatus and a continuous rolling method are provided to accurately remove crops remained on upper and lower sides of a joint between the metal plates when bonding traveling metal plates to each other. A crop removing device comprises: lower and upper crop removers(71,72) installed oppositely to the shear side(38a) of an upper crop(38) and the shear side(39a) of a lower crop(39) respectively in a state that a metal bar is positioned between the crop removers. The lower crop remover includes a lower tapping blade(74) installed oppositely to the shear side(39a) of the lower crop(39) at the rear side of a preceding metal bar(9). The upper crop remover includes an upper tapping blade(75) installed oppositely to the shear side(38a) of the upper crop(38) of a following metal bar(6). The crop removing device further comprises a scraper(77) which receives a separated upper crop(38), and is rotated to move the separated upper crop to a crop tray(78).

Description

Crop processing device, crop processing method and continuous rolling equipment and continuous rolling method {CROP REMOVING DEVICE AND METHOD, AND CONTINUOUS ROLLING EQUIPMENT AND CONTINUOUS ROLLING METHOD}

1 is an overall configuration diagram of a continuous rolling equipment having a crop processing apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of the adapter in FIG. 1. FIG.

FIG. 3 is a schematic configuration diagram of another adapter in a state different from that of FIG. 2.

4 is a conceptual diagram of the bonding completion state between the preceding metal plate and the following metal plate.

It is a conceptual diagram of the knife drive mechanism in the bonding machine.

FIG. 6 is a conceptual diagram of a knife drive mechanism different from that in FIG. 5. FIG.

7 is a conceptual diagram illustrating another example of the bonding apparatus.

Fig. 8 is a schematic diagram of a state in which a crop is connected, (a) shows a state in which the trailing metal bar tip is joined to the rear end of the preceding metal bar, and (b) shows the state of the preceding metal bar at the tip of the trailing metal bar. It is a figure which shows the state at the time of mounting and joining.

Fig. 9 is a schematic diagram showing the state after dividing the crop, (a) shows the case of dividing by applying a force on the front face side (from the solid arrow direction in Fig. 8), and (b) on the cross section side of the crop ( It is a figure which shows the case where it divides by adding a force) from the broken line arrow direction in FIG.

10 is a conceptual configuration diagram of a crop processing apparatus according to a first embodiment of the present invention.

11 is a conceptual configuration diagram of a crop processing apparatus according to a second embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

1. Roughing mill, 2. Coil box

3. splicing device, 4. finishing mill

5. down coiler, 6. trailing metal bar

7. Crop Shear, 8. Nesting Device

9. Preceding metal bar, 10. Adapter

11. Metal bar, 12. Crop processing unit

13, 14. Leveler, 15. Crop Sheer

16. edge heater, 17. bar heater

21. Rear end of leading metal bar, 22. Front end of trailing metal bar

25, 27. Turning of the knife, 26. Upper knife

28. Lower knife, 31. Upper clamp

32. Lower clamp, 33. Upper support

34. Lower support, 35. Upper knife block

36. Lower knife block, 37. Housing

38.top crop, 39.bottom crop

41. Main crankshaft, 42. Upper eccentric shaft

43, 45. Link, 44. Lower eccentric shaft

46. Coaxial, 47. Rocking lever

51. Drive housing, 52. Fixed blade

53. Lifting knife, 54. Traveling shear

61,62,71,72. Crop removal means 64,74,75. Price day

65. Scraper, 66. Drain Guide

67. Chamfer, 76. Cylinder

77. scraper, 78. crop tray

80. Crop connection, 81, 82. Division

The present invention relates to a crop processing apparatus, a crop processing method, a continuous rolling equipment and a continuous rolling method, and more particularly, a joint portion in which metal plates are bonded to a preceding metal plate and a following metal plate while traveling, and the metal plates are joined by shearing. The present invention relates to a continuous rolling facility and a continuous rolling method having a cropping apparatus for removing crops remaining above and below.

In the continuous rolling facility of a metal plate, a metal plate of desired thickness can be obtained by a rough rolling mill and a finishing mill. BACKGROUND ART As a continuous rolling facility, a method of continuously performing finishing rolling by joining a metal bar between a roughing mill and a finishing mill has been developed.

In order to continuously perform finishing rolling, it is necessary to join metal bars at high speed, and various techniques are proposed.

As a technique of joining metal bars at high speed, for example, a technique of overlapping the front end of a preceding metal bar and a trailing metal bar, shearing both metal bars at the same time, and directly contacting and joining new faces generated in the shearing process These patents are known, and Patent Document 1 (Patent No. 9-174117), Patent Document 2 (Patent No. 10-34203), and Patent Document 3 (Patent No. 2001-232403) are related.

Since these techniques are simple and simultaneously joinable because they are joined by shearing, they are a preferred method for continuous rolling equipment.

The continuous rolling equipment described in Patent Documents 1, 2, and 3 is simple and can be joined in a short time and is preferable as the continuous rolling equipment.

In the case where these are joined by shearing, crops remain above and below the joining portion, so a cropping apparatus for removing crops online immediately after joining is required.

When removing the crop, it is necessary to remove the crop reliably without adversely affecting the surface of the metal bar of the product.

However, it is the present situation that the technology of the optimum crop processing apparatus is not established specifically.

The present invention has been made to solve the above problems, and to provide a crop processing apparatus and a crop processing method and a continuous rolling equipment and a continuous rolling method that can accurately remove the crops remaining above and below the joint. have.

Crop processing apparatus according to the first invention to achieve the above object is a crop processing apparatus for processing the remaining crops above and below the joined joint while shearing by pressing the overlapped portion of the leading end of the preceding metal plate and the end of the trailing metal plate with a knife. WHEREIN: Crop removal means which strikes the front end surface of a crop and removes a crop is provided in at least one side of the upper and lower sides of the joined metal plate.

In the crop processing apparatus according to the second invention which achieves the above object, in the crop processing apparatus according to the first invention, the crop removing means strikes and removes the crop by hitting the front end surface of the crop on both sides of the joined metal plate. Characterized in that.

The crop processing apparatus according to the third invention which achieves the above object is the crop processing apparatus according to the second invention, and the crop removing means for removing the crop of the preceding metal plate among the crop removing means includes the cropping from the front in the traveling direction of the metal plate. The crop is removed by hitting the shear surface, and the crop removal means for removing the crop of the trailing metal plate among the crop removal means is to remove the crop by hitting the shear surface of the crop at the rear side in the advancing direction of the metal plate.

Crop processing apparatus according to the fourth invention that achieves the above object is a crop processing apparatus for processing the remaining crops above and below the joined joint while shearing by pressing the overlapped portion of the preceding metal plate and the tip of the following metal plate overlapped with a knife To

On both sides of the joined metal plate, the crop is removed by hitting the shear surface of one side of the crop on the top and bottom sides of the metal plate in the advancing direction of the metal plate rather than the crop, and on the other side, the crop on the other side is opposite to the shear surface. It is characterized in that it comprises a crop removal means for removing the crop by peeling off.

Crop processing method according to the fifth invention to achieve the above object is a crop processing method for processing the crop remaining in the upper and lower parts of the joined joint while shearing by pressing the overlapped portion of the leading end of the preceding metal plate and the end of the trailing metal plate with a knife. To

The crop is removed by hitting the shear surface of at least one crop of the crop of the preceding metal plate or of the following metal plate.

In the continuous rolling equipment according to the sixth invention which achieves the above object, the shearing means overlaps the leading end of the preceding metal plate and the leading end of the following metal plate on the upstream side of the finishing mill, and presses on both sides of the overlapping portion of the metal plate, while shearing. And a cropping apparatus according to any one of the first to fourth inventions, wherein the bonding apparatus owns a pair of shear knives to be bonded, and the crops remaining above and below the bonded portion joined by shearing. It is done.

According to a seventh aspect of the present invention, there is provided a continuous rolling installation comprising: a chamfer forming means for forming a chamfer on an overlapping surface side of a front end of a trailing metal plate in front of the crop processing apparatus in the continuous rolling installation according to the sixth invention. Characterized in that provided.

In the continuous rolling installation according to the eighth invention which achieves the above object, in the continuous rolling installation according to the sixth or seventh invention, a crop shear is disposed in front of the joining apparatus, and the crop shear has a chamfer forming means. It is characterized by.

In the continuous rolling installation according to the ninth invention which achieves the above object, in the continuous rolling installation according to the invention of any one of the sixth to eighth inventions, the overlapping surface of the front end of the trailing metal plate is located on the front side of the crop processing apparatus. It is characterized by including a bent portion forming means that can be rolled back.

In the continuous rolling method according to the tenth invention which achieves the above object, the rear end of the preceding metal plate and the trailing end of the subsequent metal plate overlap and overlap the overlapping portions with a knife by shearing the preceding metal plate on the upstream side of the finishing mill, and the cropping of the preceding metal plate or The crop is removed by hitting the shear surface of at least one crop of the trailing metal plate crop.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the structure of the whole continuous rolling installation is demonstrated according to FIG.

Figure 1 shows the overall configuration of a continuous rolling equipment having a crop processing apparatus according to an embodiment of the present invention.

The continuous rolling equipment of this embodiment is a finishing mill 4 and a down-coiler composed of a rough rolling mill 1, a coil box 2, a joining apparatus 3, and a rolling mill of multiple stages from an upstream side. (5) is provided.

The metal plate (following metal bar) 6 rolled by the roughing mill is wound around the coiler of the coil box 2, and the difference between the traveling speed of the roughing mill 1 and the finishing mill 4 is adjusted. The trailing metal bar 6 released from the coiler of the coil box 2 is cut as necessary by the crop shear 7 as necessary, and then the preceding metal bar (6) in the overlapping device 8 of the joining device 3. Superimposed on the rear end of 9) (the end is cut by crop shear 7 as necessary).

The leading end of the trailing metal bar 6 and the trailing end of the preceding metal bar 9 are joined at the joining machine 10 of the joining apparatus 3, and the crop of the joining section is cut at the cropping apparatus 12. The metal bars 11 joined in the bonding apparatus 3 and brought into a continuous connection state are sent to the finishing mill 4.

The bonding apparatus 3 is a structure which joins the trailing edge of the preceding metal bar 9 and the trailing edge of the following metal bar 6 while the metal bar is running, and consists of a short time bonding apparatus which can be bonded in a short time. Since joining is performed during traveling, a configuration in which the jointer follows the movement of the metal bar and moves, or a configuration in which the jointer follows the movement of the metal bar and oscillates can be applied.

For example, although the details will be described later, the bonding device 10 of the bonding device 3 is overlapped while pressing and shearing the overlapped portion between the rear end of the preceding metal bar 9 and the front end of the following metal bar 6 with a knife. It consists of a joining mechanism that possesses a pair of shear knives for joining the sites.

The metal bars 11 sent to the finishing mill 4 are sequentially hot rolled to a desired plate thickness by a multi-stage rolling machine and rolled to a desired plate thickness, and the metal bars 11 rolled to a desired plate thickness are down coilers. It is wound on (5).

In the drawing, reference numeral 13 is a leveler installed at the outlet side of the coil box 2, 14 is a leveler installed at the outlet side of the bonding apparatus 3, and 15 is a crop shear provided at the inlet side of the finishing mill 4. (shear), 16 is an edge heater disposed between the leveler 14 and the crop shear 15, 17 is a bar heater disposed on the downstream side of the edge heater 16.

The levelers 13, 14, crop shears 15, edge heaters 16 and bar heaters 17 are appropriately selected and arranged according to the situation of the continuous rolling equipment, and the arrangement positions, the presence or absence of the arrangement, and the like. Is not limited to the illustrated example.

And the crop shear 7 which cuts | disconnects the front end of the preceding metal bar 9 and the front end of the following metal bar 6 is needed when joining a metal bar butt-joined, but when joining a metal bar in the process of shearing | lamination. Is not necessary and may be omitted.

One example of the bonding machine 10 of the bonding apparatus 3 according to FIGS. 2 to 6 will be described in detail. FIG.2 and FIG.3 shows schematic structure of the bonding machine 10, FIG.2 is a joining start state, and FIG.3 is a state in the middle of joining. 4 shows a metal plate in a state of completion of bonding. 5 and 6 show the knife drive mechanism in the bonding machine 10.

As shown in FIG. 2, the tip 22 of the trailing metal bar 6 overlaps the rear end 21 of the preceding metal bar 9 so that the rear end 21 and the tip 22 overlap with each other. It is located between the upper knife 26 provided with the lower knife 28, and the lower knife 28 provided with the projection 27. In other words, the projections 25 and 27 of the upper and lower knives are in contact with the surfaces of the rear end 21 and the front end 22.

In addition, the upper clamp 31 and the lower clamp 32 are in contact with the portion where the rear end 21 of the preceding metal bar 9 overlaps with the front end 22 of the trailing metal bar 6. The upper clamp 31 is supported by any hydraulic force by the upper support device 33 and the lower clamp 32 is supported by any hydraulic force by the lower support device 34.

The upper knife 26, the upper clamp 31, and the upper support device 33 are integrally formed as the upper knife assembly 35. The lower knife 28, the lower clamp 32, and the lower support device 34 are integrally formed as the lower knife assembly 36.

The upper knife assembly 35 and the lower knife assembly 36 are movably supported in the thickness direction of the preceding metal bar 9 and the following metal bar 6 along the post portion of the housing 37. The upper knife assembly 35 and the lower knife assembly 36 are configured to be accessible and spaced apart by a link mechanism, which will be described later, and the upper knife assembly 35 having the leading metal bar 9 and the trailing metal bar 6 therebetween. 35) and the lower sheath 36 are approached or spaced apart from each other. The joining process is an approaching operation, and after joining, a joining operation is performed.

In addition, it is also possible to set it as the structure which moves only one direction of the upper knife 26 or the lower knife 28. FIG.

As shown in FIG. 3, in the process of the upper knife 26 and the lower knife 28 shearing the leading metal bar 9 and the trailing metal bar 6, the leading metal bar 9 and the trailing metal bar ( 6) are joined by plastic flow deformation at the shear surface of each other to form an integral continuous metal bar 11.

As shown in Fig. 4, in the completion position of the joining operation, the upper crop 38, which is the front end of the trailing metal bar 6, and the lower crop, which is the rear end of the preceding metal bar 9, are joined to the joining portions of the continuous metal bars. 39) remain at positions shifted up and down, respectively. Thereafter, the upper knife 26 and the lower knife 28 are spaced apart to retreat until the distance between the upper and lower knives is a predetermined distance.

The upper crop 38 and the lower crop 39 remaining in the positions shifted up and down at the time of joining are removed by the crop processing apparatus 12 (see FIG. 1), and the connected metal bars 11 are connected to the finishing mill 4. Is sent. Details of the cropping apparatus 12 will be described later.

Joining of the preceding metal bar 9 and the following metal bar 6 by the bonding machine 10 is performed in synchronization with the running of the metal bar. For this reason, with the knife drive mechanism shown in FIG. 5 and FIG. 6, the cooperative movement of the bonding machine 10, and the approach and separation operation of the upper knife 26 and the lower knife 28 are performed. That is, the upper knife 26 and the lower knife 28 are made to move according to the movement trajectory of the joining point of the preceding metal bar 9 and the following metal bar 6.

5 and 6, the knife drive mechanism will be described. 5 shows a state before bonding start, and FIG. 6 shows a state at the completion of bonding.

The upper knife 26 and the lower knife 28 return to the position before joining via the joining completed position from the position before joining. At this time, since the metal bars 6 and 9 to be joined are traveling in the downstream direction (arrow direction in Figs. 5 and 6) at the line speed, the upper knife 26 and the lower knife 28 are in dashed lines while synchronous with this progression. It moves along the upper knife trajectory and the lower knife trajectory.

The main crankshaft 41 has two eccentric shafts with respect to the center A. As shown in FIG. The upper eccentric shaft 42 is connected to the upper knife 26 through the link 43, and the lower eccentric shaft 44 is connected to the lower knife 28 via the link 45. According to the rotation angle of the main crankshaft 41, the upper knife 26 and the lower knife 28 operate up-down (push-in or retract).

It may also have a coaxial shaft 46 coupled to the main crank shaft 41 in a cooperative relationship, so that the coaxial shaft 46 is the link 43 and the lower portion of the upper eccentric shaft 42 through the swing lever 47 It is associated with the link 45 of the eccentric shaft 44.

While the upper knife 26 and the lower knife 28 are in contact with the metal bar by linkage with the coaxial shaft 46, the metal bars 6, 9 of the metal bar 6, 9 are operated at approximately the same speed as the movement of the metal bars 6,9. Move the upper knife 26 and the lower knife 28 in the advancing direction, and when the upper knife 26 and the lower knife 28 fall off the metal bar, the upper knife 26 and the lower knife 28 are returned to their original positions. Return

In the above-mentioned joining apparatus 3, the upper knife 26 and the lower knife 28 are moved to the up-down direction according to the movement trace of the joining point of the preceding metal bar 9 and the following metal bar 6, for example, The distance required from the start of joining to the end of joining is set to about 1 m or less.

In the continuous rolling facility shown in FIG. 1, the installation provided with the coil box 2 is demonstrated, for example. In the case of continuous rolling equipment without the coil box 2, after the rear end of the trailing metal bar 6 passes through the rough rolling mill 1, or the front end of the preceding metal bar 9 is the finishing mill 4 The joining in the joining apparatus 3 is set so that it may be carried out before it enters.

That is, at the time of joining in the joining apparatus 3, it is set so that the rolling of the preceding metal bar 9 and the following metal bar 6 may not overlap.

In the above-described joining apparatus 3, the knife is pushed in from both sides with respect to the thickness direction of the metal bars 6 and 9, and the front and back metal bars 9 and 6 are subjected to plastic flow deformation of the shear surfaces in the shearing process. In order to bond the metal bar, it is possible to join the metal bars in a short time while the bonding strength is high.

In addition, as a joining apparatus, if it is the apparatus which can be joined for a short time, as shown in FIG. 7, the traveling shear apparatus 54 provided with the fixed knife 52 and the lifting knife 53 to the traveling housing 51 is applied. It is also possible. The traveling housing 51 is driven in synchronism with the running of the metal bar, the lifting knife 53 is lowered during the running, and shearing is performed between the fixed blade 52 and the preceding metal bar 9 and the trailing metal bar 6. ) Can be joined.

In this case, the distance for joining (the distance from the start of joining to the end of joining) is, for example, about 10 m, but the joining by shearing is possible with an extremely simple device configuration.

Fig. 8 is a diagram showing a connection state of a crop at the joining portion of the metal bar, and (a) is possible when the tip of the trailing metal bar 6 is placed on the rear end of the preceding metal bar 9 and joined. The state is shown, and (b) has shown the form which can be formed when the rear end of the preceding metal bar 9 was attached to the front end of the following metal bar 6, and joined. After joining, the crop connection part 80 (the part to which the metal bars 11 joined with the crops 38 and 39 are connected in some part) exists.

The solid arrow indicates the case where the crops 38 and 39 are separated by hitting the shear surfaces 38a and 39a of the crops 38 and 39, and the broken arrows are opposite to the shear surface (cross section of the metal bar) 38b. And 39b) show a case where the crop is divided by crushing or peeling.

FIG. 9 is a view showing a state after cropping, and (a) shows the dividing end 81 when the crops 38 and 39 are divided by striking from the direction of the solid arrow in FIG. 8, and (b) In FIG. 8, the dividing end part 82 at the time of dividing the crops 38 and 39 by hitting or peeling from the broken line arrow direction is shown.

When the crops 38 and 39 are divided from the broken arrow direction in Figs. 8 (a) and 8 (b), as shown in Fig. 9 (b), the dividing end portion 82 is flipped after the dividing. Occurs. When the 83 is rolled up, the notch 84 remains near the dividing end 82 of the joint, which causes the strength of the joint to fall. Further, the retracted portion is bent with the progress of subsequent rolling, and adheres to the surface of the metal plate 11 to reduce the thickness of the base material in the thickness direction of the metal plate 11, resulting in a decrease in strength.

On the other hand, when the crops 38 and 39 are segmented from the direction of the solid arrow, after the separation, they become continuous like the dividing end 81, and neither the above-mentioned 83 nor the notch 84 exist. Therefore, the strength fall of the joint does not occur, and the decrease in strength during rolling does not occur.

In this way, by cutting the front end surfaces 38a and 39a of the crops 38 and 39 from the arrow direction of the solid line in FIG. 8, the crop connection portion 80 is divided, so that the adverse effect of the coupling portion due to the crop separation can be reduced.

Next, the crop processing apparatus 12 will be described with reference to FIGS. 10 and 11. 10 is a conceptual configuration of a crop processing apparatus according to the first embodiment of the present invention, and FIG. 11 is a conceptual configuration of a crop processing apparatus according to the second embodiment of the present invention.

10, a crop processing apparatus according to the first embodiment will be described.

As shown, the crop removal means with the metal bar 11 interposed so as to face the front end face 38a of the upper crop 38 remaining above and below the junction and the front end face 39a of the lower crop 39. Crop removal devices 71 and 72 are respectively provided.

The lower crop removal device 71 is provided at a position opposite to the front end face 39a of the rear lower side crop 39 of the preceding metal bar 9, and constitutes a price blade 74 as a price means. The price blade 74 ambushes and waits for the lower crop 39 as the metal bar 11 runs, and strikes and drops the front face 39a of the lower crop 39 by the price blade 74. By this, the crop 39 is removed from the shear surface 39a side.

The upper crop removal apparatus 72 is comprised by the price blade 75 as a price means provided in the position which opposes the front end surface 38a of the upper crop 38 of the following metal bar 6. As shown in FIG. The price blade 75 is in a state of following the upper crop 38 as the metal bar 11 travels, and is driven to rotate at a speed faster than the traveling speed of the metal bar 11 by a driving means such as a cylinder 76. do. The upper crop 38 is removed from the front face 38a side by hardly lowering the price blade 75 to the front face 38a of the top crop 38 by driving the cylinder 76 or the like. In addition to the cylinder 76, it is also possible to rotationally drive the striking blade 75 with a motor or the like.

The cropping apparatus of the first embodiment shown in FIG. 10 removes the front end face 39a of the rear lower side crop 39 of the preceding metal bar 9 by the price blade 74 and the trailing metal bar 6. Since the shear face 38a of the upper crop 38 of the upper edge 38 is removed by the price blade 75, the upper and lower portions of the junction portion become the same as the dividing end portion 81, so that it is not the same as the harmful dividing end portion 82 at the joining portion.

The divided top crop 38 can be received by the scraper 77, which is transferred to the crop tray 78 by rotating the scraper 77 upward as indicated by the arrow in the figure. Although not shown in the figure, the upper crop 38 can be discharged offline by tilting the crop tray 78.

Referring to Fig. 11, a crop processing apparatus according to the second embodiment will be described.

As shown in FIG. 11, crop removal devices 61 and 62 are provided above and below the metal bar 11 so as to be located in front of the upper crop 38 and the lower crop 39 remaining above and below the joint portion. have.

The lower crop removal apparatus 61 is comprised by the price blade 64 as a price means provided in the position which opposes the front end surface 39a of the rear lower side crop 39 of the preceding metal bar 9. As shown in FIG. The price blade 64 ambushes and waits for the lower crop 39 as the metal bar 11 runs, and strikes the shear surface 39a of the lower crop 39 by the price blade 64. As a result, the lower crop 39 is removed from the shear surface 39a side.

The upper crop removal apparatus 62 is comprised by the scraper 65 as peeling means provided in the position which opposes the front end surface 38b of the upper crop 38 of the following metal bar 6. As shown in FIG. As the metal bar 11 travels, the tip of the scraper 65 is fitted to the lower end of the tip surface 38b of the upper crop 38, and the upper crop 38 is peeled off from the surface of the metal bar 11. The upper crop 38 is removed at the tip end face 38b. The removed upper crop 38 is guided to the upper surface of the scraper 65 and the discharge guide guide 66 to be discharged to a predetermined discharge site.

The chamfer 67 is formed in the lower end (overlapping surface side) of the front end surface 38b of the upper crop 38, and the front end of the scraper 65 is fitted easily.

The cropping apparatus of the second embodiment shown in FIG. 11 removes the front end face 39a of the rear lower side crop 39 of the preceding metal bar 9 by the price blade 64 and the trailing metal bar 6. Since it was made to remove by the scraper 65 from the front end surface 38b side of the upper crop 38 of the lower crop 38, the lower crop 39 and the upper crop 38 in an ambushing wait state from the front of the metal bar 11 in the traveling direction. Can be removed.

For this reason, it is possible to reliably ensure that the price blade 64 reaches the lower crop 39 and the scraper 65 fits into the upper crop 38, and the lower crop 39 and the upper crop 38 Can be removed reliably. In addition, since the upper side of the junction becomes as the dividing end 82 (see FIG. 9 (b)), and the lower side of the junction becomes as the separating end 81 (see FIG. 9 (a)), the harmful dividing end 82 is flipped over at the junction. It is possible to have only one place to lose.

The chamfer 67 shown in FIG. 10 and FIG. 11 is automatically formed when a part of the tip of the trailing metal bar 6 is cut out with the crop shear 7 of FIG. About the mechanism of the development of the chamfer 67, Mitsubishi Heavy Industries, Ltd. Vol. 21 No. 3, 4, etc. of "improving the cutting property of a drum type crop shear" of 6 (1984) are referred to.

In addition, as a crop shear, it is not limited to the said drum type crop shear, As long as it can form the chamfer 67, it is possible all.

In addition, if the tip portion (overlapping portion) of the trailing metal bar 6 is folded upward in advance, there is no need to install the chamfer 67 in particular, and a scraper is provided between the upper crop 38 and the preceding metal bar 9. The insertion of the 65 can be facilitated, and the recall of the upper crop 38 by the scraper 77 can be facilitated.

As a means for facilitating the insertion of the scraper 65 between the upper crop 38 and the preceding metal bar 9, or for facilitating the recall of the upper crop 38 by the scraper 77, the following is followed. When the metal bar 6 is wound around the coil box 22, the rear end (where the tip ends when unwinding) can be considered to be bent upwards when unwinding. Moreover, it can also cope by controlling the leveler 13 provided in front of the bonding apparatus 3, and leaving a predetermined curvature.

In the cropping apparatus and the cropping processing method described above, it becomes possible to accurately remove the upper crop 38 and the lower crop 39 remaining above and below the joint portion. In the continuous rolling equipment provided with the above-mentioned crop processing apparatus, it becomes possible to use the continuous rolling equipment and the continuous rolling method capable of accurately removing the upper crop 38 and the lower crop 39 remaining above and below the joint portion.

In addition, although the price means which strikes on the shear front side of a crop was mentioned here as a crop removal means, it is not limited to this, For example, a crop connection part is cut off in the shear front side of a crop by a cutter etc. It is also possible to divide the crop in a form similar to the dividing end 81, not in the form of. In short, the crop removing means may be one capable of separating the crop from the metal plate by applying a force to the crop.

As described above, the crop processing apparatus, the crop processing method, the continuous rolling equipment, and the continuous rolling method according to the present invention have the following effects.

First, according to the crop processing apparatus according to the first invention, at least one side of the top and bottom can remove the crop by hitting the shear surface of the crop, thereby reducing the adverse effect on the joint by the splitting cutting of the crop and accurately removing the crop. can do.

According to the crop processing apparatus according to the second invention, the crops can be removed by hitting the shear surface of the crops on both the top and the bottom, and the adverse effect on the joint portion due to the crop separation cutting can be further reduced.

According to the cropping apparatus according to the third invention, the cropping of the joint can be removed by hitting the shear surface.

According to the crop processing apparatus according to the fourth invention, it is possible to remove crops in the form of ambushing and waiting for the joints, to ensure reliable removal, and to reduce the adverse effects on the joints due to the cropping division. Can be.

According to the cropping method according to the fifth invention, the cropping can be removed from the shearing surface by hitting the shearing surface of the joining portion, and it is possible to reduce the adverse effect on the joining portion due to the cropping division, thereby enabling accurate removal.

According to the continuous rolling installation which concerns on 6th invention, the continuous rolling installation provided with the crop processing apparatus which can remove the crop which remains above and below a junction part correctly can be obtained.

According to the continuous rolling facility according to the seventh invention, the crop can be accurately lifted during or after the blow is finished, and the crop can be accurately peeled off.

According to the continuous rolling installation which concerns on 8th invention, the chamfer can be formed without providing a special apparatus.

According to the sequential rolling equipment according to the ninth invention, since a means for bending upward is provided, the upper crop can be bent upward, so that the upper crop can be easily removed and recovered.

According to the continuous rolling method according to the tenth invention, cropping can be removed from the shearing surface by hitting the shearing surface of the joining portion, whereby the adverse effect on the joining portion due to the cropping division can be reduced and precisely removed.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (10)

In a cropping apparatus for processing a crop remaining on the upper and lower parts of a joined joint while pressing and shearing the overlapped portion of the front end of the preceding metal plate and the front end of the subsequent metal plate by a knife, Crop processing apparatus, characterized in that on the joined metal plate, at least one side of the lower portion is provided with a crop removing means for removing the crop by hitting the shear surface of the crop. The method of claim 1, The crop removing means, the cropping apparatus, characterized in that to remove the crop by hitting the shear surface of the crop on the upper and lower sides of the bonded metal plate. The method of claim 2, Crop removal means for removing the crop of the preceding metal plate of the crop removing means is to remove the crop by hitting the shear surface of the crop from the front of the metal plate in the traveling direction, Crop removal means for removing the crop of the trailing metal plate of the crop removal means, the crop processing apparatus characterized in that to remove the crop by hitting the shear surface of the crop from the rear side in the advancing direction of the metal plate. In a crop processing apparatus for processing a crop remaining on the upper and lower parts of a joined joint while pressing the overlapped portion of the preceding metal plate and the leading end of the subsequent metal plate by pressing the overlapped portion with a knife, On both sides of the upper and lower sides of the joined metal plate, the crop shear is removed by hitting the crop shear surface of one side on one side of the upper and lower portions of the metal plate in the forward direction of the metal plate rather than the crop, and on the other side, the crop of the other side peels off the opposite side of the shear surface. Crop processing device characterized in that it comprises a crop removal means for removing the crop. In a cropping apparatus for processing a crop remaining on the upper and lower parts of a joined joint while pressing and shearing the overlapped portion of the front end of the preceding metal plate and the front end of the subsequent metal plate by a knife, A cropping method comprising removing a crop by hitting a crop shear surface of at least one of the crop of the preceding metal plate or the crop of the following metal plate. An overlapping means for overlapping the rear end of the preceding metal plate and the front end of the following metal plate on an upstream side of the finishing mill; A joining apparatus having a pair of shear blades joined together by pressing with a knife on both sides with overlapping portions of the metal plate interposed therebetween, The cropping apparatus of any one of Claims 1-4 which processes the crop which remain above and below the junction part joined by the front end, The continuous rolling installation characterized by the above-mentioned. The method of claim 6, And a chamfer forming means for forming a chamfer on the overlapping surface side of the leading end of the trailing metal plate at the front of the crop processing apparatus. The method according to claim 6 or 7, A cropping shear is arranged in front of the joining apparatus, and the cropping shear is provided with chamfer forming means. The method according to any one of claims 6 to 8, And a bending forming means for bending the overlapping surface of the leading end of the trailing metal plate upward in the front of the cropping apparatus. On the upstream side of the finishing mill, the rear end of the preceding metal plate and the leading end of the trailing metal plate are overlapped, the overlapping portions are pressed to join the overlapped portions by shearing, and the shear surface of at least one crop of the crop of the preceding metal plate or the following metal plate is pressed. The continuous rolling method characterized by removing the crop as being.

Images