Cut piece discharge device and cut piece recovery method

Abstract

To recover cut pieces into a cut piece recovery box in a more reliable manner.SOLUTION: A crop piece discharge device has a crop chute 2 which guides crop pieces of a metal plate cut by a cutting machine downward and causes the crop pieces to be recovered into a crop piece recovery box which is open at an upper part. In a top view, a lower end 2A of the crop chute 2 is arranged so as to overlap with the crop piece recovery box. Further, the crop piece discharge device includes a contact prevention body 6 which is arranged between the lower end 2A of the crop chute 2 and the crop piece recovery box 3 and contacts with the crop piece recovery box before the crop piece recovery box 3 contacts with the lower end 2A of the crop chute 2 when the crop piece recovery box 3 is displaced upward.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a cutting piece discharge device that guides (induces) cut metal cutting pieces to a cutting piece recovery box via a guide path and recovers the cutting pieces in the cutting piece recovery box, and a cutting piece recovery method using the cutting piece discharge device.The present invention is also suitable for discharging crops generated in rolling facilities such as hot rough rolling and skin pass rolling. [Background technology]

[0002] In rolling equipment, as described in Patent Documents 1 and 2, cut crop pieces fall onto a crop chute that forms a slope (guideway) and are sequentially placed on the crop chute. The crop pieces placed on the crop chute are guided by the crop chute and fall downward, dropping from the lower end of the crop chute into a crop piece collection box. In this way, the crop pieces are sequentially collected into the crop piece collection box.

[0003] When the crop fragment collection box becomes full of crop fragments or when it becomes necessary to separate the types of steel, the crop fragment collection box is replaced. This crop fragment collection box replacement is carried out by transporting the crop fragment collection box containing the crop fragments to another area and placing a new crop fragment collection box in the crop fragment collection position.

[0004] The crop fragment collection box containing the crop fragments is a heavy object, and there are several collection methods for transporting (collecting) this heavy crop fragment collection box.

[0005] One of the collection methods is to lift the crop fragment collection box with a crane. In this collection method, the tip (hook) of the crane's lifting device (wire or chain) is hooked onto the crop fragment collection box, and the crop fragment collection box is lifted up (see Figure 1). The crop fragment collection box is then transported to another area. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-61457 [Patent Document 2] Japanese Patent Application Publication No. 10-109219 Summary of the Invention [Problem to be solved by the invention]

[0007] Generally, the bottom end of the crop chute is designed to be flush with the installation surface, and the crop debris collection box is positioned close to the installation surface and in contact with it. The installation surface controls the position of the crop debris collection box on the crop chute side.

[0008] In this case, when viewed from above, a gap may form between the bottom of the crop chute and the crop fragment collection box. If a gap forms, some crop fragments will not be collected in the crop fragment collection box and will fall to the area where the crop fragment collection box is installed (the floor). If this continues, the gap between the crop fragment collection box and the bottom of the crop chute may become even larger, which could cause the line to stop.

[0009] The present invention has been made in view of the above points, and has an object to make it possible to more reliably store the cut pieces in the cut piece collection box. [Means for solving the problem]

[0010] The inventors have considered ways to more reliably store the cut pieces in the cut piece collection box, and have come up with the idea of extending the lower end of the guide path into the cut piece collection box when viewed from above.

[0011] Furthermore, it was discovered that if the lower end of the guideway were to overhang toward the clipping collection box, when the clipping collection box was moved upward to be collected, the heavy clipping collection box might come into contact with the lower end of the guideway, as if it were being pushed up from below. It was estimated that if the crop collection box came into contact with the lower end of the guideway too frequently, problems such as deformation of the guideway would occur. Therefore, it was thought that a solution could be found to reduce the frequency with which the rising crop collection box would come into contact with the lower end of the guideway.

[0012] In order to solve the problem, one aspect of the present invention is a cut piece discharge device installed in rolling equipment, which has a guide path that guides cut pieces of a metal plate cut by a cutting machine downward and collects the cut pieces in a cut piece collection box that is open at the top, and which is arranged so that the lower end of the guide path overlaps with the cut piece collection box when viewed from above, and which further includes a contact prevention body that is arranged between the lower end of the guide path and the cut piece collection box and abuts against the cut piece collection box before it comes into contact with the lower end of the guide path when the cut piece collection box is displaced upward. [Effects of the Invention]

[0013] According to this aspect of the present invention, by extending the lower end of the guide path toward the cut piece collection box, it is possible to more reliably store the cut pieces in the cut piece collection box.

[0014] Furthermore, according to the present invention, when the cutting piece collection box is displaced upward, the frequency with which the cutting piece collection box comes into contact with the lower end of the guide path can be reduced, thereby realizing more reliable storage of cutting pieces while reducing damage to the lower end of the guide path caused by the cutting piece collection box. [Brief explanation of the drawings]

[0015] [Figure 1] 10A and 10B are diagrams illustrating a state in which the cut piece collection box is collected; [Figure 2]A side view showing the relationship between the lower end of the crop chute, the crop piece collection box, and the contact prevention body. [Figure 3] FIG. 1 is a top view of the crop chute and crop piece collection box. [Figure 4] FIG. 10 is an enlarged side view showing the relationship between the lower end of the crop chute, the crop piece collection box, and the contact prevention body. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] FIG. 10 is a front view illustrating the attachment of the cross member to the support plate. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the rolling equipment is assumed to be a hot rough rolling equipment, and the cutting machine is assumed to be a crop shear, i.e., the cut pieces are crop pieces.

[0017] However, the equipment to which the present invention is applied is not limited to hot rough rolling equipment. It can also be applied to other rolling equipment equipped with a cutting machine, such as a skin pass line. In addition, the cutting machine may be a cutting machine other than a crop shear.

[0018] (composition) As shown in Figure 2, the crop discharge device of this embodiment includes a crop chute 2. The crop chute 2 is positioned so as to extend diagonally downward from below the crop shear 12. Note that in each drawing, various components and equipment for controlling the behavior of the crop pieces 1 are arranged around the crop chute 2, but are omitted for clarity. The crop discharge device of this embodiment includes at least a crop chute 2 and a contact preventive body 6.

[0019] <Crop Shoot 2> The crop chute 2 constitutes a guideway. As shown in Figure 2, the upstream side of the crop chute 2 is positioned below the crop shear 12, and the bottom surface 2a can receive the crop pieces 1 that have been cut and dropped.

[0020] 2 and 3, the crop chute 2 is a slope extending in a direction (horizontal direction) perpendicular to the rolling direction in which the metal plate is rolled in a plan view. Note that the extension direction of the crop chute 2 does not need to be perpendicular to the rolling direction. It is sufficient that the crop pieces 1 are guided to a position outside the rolling line.

[0021] As shown in Figure 1, the lower end 2A of the crop chute 2 overhangs the vertically extending installation surface 10 toward the crop fragment collection box. The overhang is, for example, 200 mm. As a result, in a plan view, the tip surface of the lower end 2A of the crop chute 2 overlaps with the upper opening of the crop fragment collection box. Note that the contact prevention body 6 is omitted from Figure 1, and Figure 1 also shows the lifting device 5 of the crane 4 used to lift the crop fragment collection box 3.

[0022] Here, the crop piece collection box 3 will be described. The crop fragment collection box 3 is a box with an open top surface 3A. The crop fragment collection box 3 shown in Figure 1 has a wall cut diagonally at the corner of the upper end on the crop chute 2 side.

[0023] The crop fragment collection box 3 is placed on the floor surface 11, which is the box placement section, with the box moved toward the crop chute 2 so that it abuts against the installation surface 10. Note that while some types of box 3 have wheels on the bottom, the crop fragment collection box 3 of this embodiment does not have wheels.

[0024] In this embodiment, the lower end 2A of the crop chute 2 is extended toward the crop piece collection box 3. As a result, crop pieces 1 that fall through the crop chute 2 are more reliably dropped into the crop piece collection box 3 and collected therein.

[0025] Here, in this embodiment, when replacing the crop piece collection box 3 and collecting the heavy crop piece collection box 3 that contains crop pieces 1, we consider the case where the crop piece collection box 3 is lifted and transported to another location, as shown in Figure 1.

[0026] In this transport, the crop piece collection box 3 is swung to the right in Figure 1 and lifted up, and the crane is operated so that the crop piece collection box 3 does not come into contact with the lower end 2A of the crop chute 2. However, because it is difficult to see the area around the lower end 2A of the crop chute 2 due to interference from various pieces of equipment, the raised crop piece collection box 3 often comes into contact with the lower end 2A of the crop chute 2. In particular, if the box comes into contact with the lower end 2A of the crop chute 2 in a way that pushes it up from below, it has a significant adverse effect on the lower end 2A of the crop chute 2.

[0027] In this embodiment, a contact preventive body 6 is provided to prevent such interference between the crop chute 2 and the crop piece collection box 3.

[0028] <Contact prevention body 6> The contact preventive body 6 will be described with reference to FIGS. 2, the contact preventive body 6 is disposed between the lower end 2A of the crop chute 2 and the crop piece collection box 3. The contact preventive body 6 is disposed in a position where it will come into contact with the crop piece collection box 3 before the crop piece collection box 3 comes into contact with the lower end 2A of the crop shear 12 when the crop piece collection box 3 is displaced upward.

[0029] Furthermore, since the contact preventive body 6 in this embodiment is not supported by the crop chute 2 , the impact input to the contact preventive body 6 is not transmitted directly to the crop chute 2 .

[0030] As shown in FIGS. 3 to 5, the contact preventive body 6 of this embodiment includes a cross member 8 and a plurality of brackets 9. As shown in FIGS. The contact preventive body 6 of the present invention is made of a metal material such as iron or steel. The contact preventive body 6 may be made of a material other than metal, such as wood, as long as it has sufficient strength to withstand contact with the crop fragment collection box 3.

[0031] <Beam 8> The cross member 8 is disposed below the lower end portion 2A of the crop chute 2, and extends in the width direction of the crop chute 2 when viewed from above. The cross member 8 in this embodiment has a flat plate shape with its thickness oriented in the front-to-rear direction. Both left and right ends of the cross member 8 are detachably attached to the framework 30 of the facility via support plates 7. The part of the framework 30 to which the support plates 7 are fixed may be a component of the existing facility or a component of a newly installed facility.

[0032] In a plan view, both left and right ends of the cross member 8 are located widthwise outside the lower end 2A of the crop chute 2, and both left and right ends of the cross member 8 are fixed to column portions 30 (main body 30 of the equipment) located widthwise outside the lower end 2A of the crop chute 2.

[0033] That is, a support plate 7 is fixed to the surface of the pillar 30 facing the crop piece collection box 3, and the end of the cross member 8 is detachably attached to the support plate 7 by fastening with a bolt. Reference numeral 13 denotes the fastening bolt.

[0034] The support plate 7 is also provided with a hook portion 7A that protrudes toward the cut piece collection box. The lower end of the cross member 8 is also formed with a recess 8A that can be hooked onto the hook portion 7A from above. That is, by hooking the left and right ends of the cross member 8 onto the hook portion 7A from above, the cross member 8 can be placed horizontally on the left and right support plates 7, and in this state, the bolts can be stably fastened.

[0035] Furthermore, in this embodiment, the support plate 7 has a protrusion 7B that can abut against the longitudinal end of the cross member 8, and by sliding the extending end of the cross member 8 against the protrusion 7B, positioning of the cross member 8 in the extending direction can be easily performed.

[0036] <Bracket 9> The bracket 9 constitutes the main body of the contact preventive body 6 . A plurality of brackets 9 are arranged in the extending direction of the cross member 8, and each bracket 9 is fixed integrally to the cross member 8. It is preferable that there are three or more brackets 9. Each bracket 9 protrudes from the cross member 8 toward the crop piece collection box 3. That is, the rear end of each bracket 9 is fixed to the cross member 8 and protrudes toward the crop piece collection box 3 in a cantilevered manner.

[0037] The shape of the tip end surface 9A of the bracket 9 on the protruding side is set so that the amount of protrusion gradually increases continuously or intermittently from the bottom to the top in a side view. The end position of the bracket 9 at its most protruding part is equal to the tip position of the lower end 2A of the guide path when viewed from above, or protrudes further toward the crop fragment collection box 3 than the tip position of the lower end 2A of the guide path.

[0038] (Operation etc.) In the rolling equipment, the leading and trailing ends of the metal plate in the rolling direction are cut by a crop shear 12, thereby shaping the rolled metal plate. The cut pieces, or crop pieces 1, fall through the crop shear 12 and, as shown in Figures 2 and 3, land on the upstream side of the crop chute 2. The crop pieces 1 on the crop chute 2 are guided by the crop chute 2 and fall diagonally downward, and then fall downward from the lower end 2A of the crop chute 2 into a crop piece collection box 3. This process is repeated, and the crop pieces 1 are sequentially collected into the crop piece collection box 3.

[0039] At this time, by extending the lower end 2A of the crop chute 2 toward the crop piece collection box 3 from the installation surface 10, it is possible to more reliably drop each crop piece into the crop piece collection box 3.

[0040] <Collecting Crop Piece Collection Box 3> Then, for example, when it is determined that the crop pieces 1 contained in the crop piece collection box 3 exceed a specified amount, the box 3 is replaced.

[0041] In this embodiment, the replacement work involves lifting the crop piece collection box 3, which has become heavy due to the stored crop pieces 1, with a crane 4, as shown in Figure 1, and transporting the crop piece collection box 3 to another location (not shown). In this case, as shown in FIG. 1, a hoisting device 5 made of a wire, chain, or the like is lowered from an overhead crane 4, and a hook portion 7A of the hoisting device 5 is hooked onto the crop piece collection box 3. Then, the crane 4 raises the crop piece collection box 3 .

[0042] In this embodiment, as shown in Figure 1, the lower end 2A of the crop chute 2 is set to extend further toward the crop fragment collection box 3 than the installation surface 10 extending vertically, and when viewed from above, as shown in Figure 1, the tip of the lower end 2A of the crop chute 2 is positioned within the upper opening of the crop fragment collection box 3.

[0043] For this reason, if the contact preventive body 6 were not present, simply lifting the crop piece collection box 3 with the crane 4 would cause the right end of the crop piece collection box 3 in FIG. 1 to come into contact with the lower end 2A of the crop chute 2 from below. When this happens, a certain amount of impact from the crop piece collection box 3 being collected would be input to the lower end 2A of the crop chute 2.

[0044] For this reason, the worker raises the crop piece collection box 3 while swinging it to the right in Figure 1. Even in this case, the rising crop piece collection box 3 is likely to come into contact with the lower end 2A of the crop chute 2. If this contact occurs frequently, the crop chute 2 may be damaged, which may hinder the collection of crop pieces 1.

[0045] In contrast to this, in this embodiment, a contact preventive body 6 is provided below the lower end portion 2A of the crop chute 2. Therefore, when the crop piece collection box 3 to be collected is raised from the collection position of the crop pieces 1, the upper end of the crop piece collection box 3 abuts against the tip surface 9A of the bracket 9 of the contact prevention body 6 before abutting against the lower end 2A of the crop chute 2, thereby preventing the upper end of the crop piece collection box 3 from contacting the lower end 2A of the crop chute 2.

[0046] Furthermore, the contact preventive body 6 of this embodiment has a portion that contacts the crop debris collection box 3, specifically, a profile of the end face of the tip of the bracket 9 along the vertical direction, with the amount of protrusion gradually increasing continuously or intermittently from bottom to top. Therefore, after the upper end of the rising crop debris collection box 3 contacts the contact preventive body 6, as the box 3 rises, the box 3 is guided away from the lower end 2A of the crop chute 2 (to the right in Figures 1 and 2 ) in a top view. Therefore, the box 3 moves upward while swinging away from the lower end 2A of the crop chute 2. In other words, the upper end of the box 3 can rise without getting caught on the contact preventive body 6. Furthermore, the contact preventive body 6 displaces the box 3 to the right as it rises, which may further prevent the box 3 from contacting the lower end 2A of the crop chute 2.

[0047] Furthermore, by fixing the contact preventive body 6 to the main body of the equipment rather than supporting it on the crop chute 2, it is possible to prevent the impact input to the contact preventive body 6 from being transmitted to the crop chute 2. The equipment may be, for example, a crop discharge device or a rolling mill. In this embodiment, the surface position where the contact preventive body 6 is fixed is the installation surface 10.

[0048] In addition, in this embodiment, the cross member 8 is fixed to the frame with bolts via the support plate 7, so if the bracket 9 or the like is damaged, the cross member 8 can be removed and another cross member 8 can be attached. In other words, by making the contact preventive body 6 easily detachable with the bolts 13, the maintainability of the contact preventive body 6 is improved.

[0049] Furthermore, when fastening the end of the cross member 8 with a bolt, the cross member 8 can be temporarily supported by first simply hooking the hook portion 7A into the recess 8A. Therefore, even if the cross member 8 is heavy, the bolt fastening work for the end of the cross member 8 is easy.

[0050] Here, the position of the most protruding tip of the bracket 9 is set so that, in a plan view, it is either at the same position as the tip surface of the lower end 2A of the crop chute 2 or so that it protrudes further toward the crop fragment collection box 3 than that tip surface. The amount of protrusion is set so that the crop fragments 1 that fall from the crop chute 2 toward the crop fragment collection box 3 do not come into contact with it or come into minimal contact with it.

[0051] (others) The present disclosure may also have the following configuration. (1) Disclosure 1 is a cut piece discharge device provided in a rolling facility, the cut piece discharge device having a guide path that guides cut pieces of a metal plate cut by a cutting machine downward and collects the cut pieces in a cut piece collection box that is open at the top, a lower end of the guide path is arranged to overlap with the cut piece collection box in a top view; Further, a contact prevention member is provided which is disposed between the lower end of the guide path and the cutting piece collection box and which comes into contact with the cutting piece collection box before the cutting piece collection box comes into contact with the lower end of the guide path when the cutting piece collection box is displaced upward. Cut piece ejector. (2) Disclosure 2 states that the contact preventive body is a cross member extending in a width direction of the guideway below the guideway; a plurality of brackets arranged in an extension direction of the cross member and each fixed to the cross member; Equipped with Each bracket protrudes from the cross member toward the cut piece collection box and is capable of coming into contact with the cut piece collection box when displaced upward. (3) In Disclosure 3, the shape of the tip surface of the bracket is such that the amount of protrusion toward the cutting piece collection box increases continuously or intermittently from the bottom to the top. (4) In disclosure 4, the end of the cross member is detachably attached to the body of the facility. (5) Disclosure 5 has a support plate fixed to the body of the equipment, The end of the cross member is detachably fixed to the support plate by bolt fastening, Furthermore, The support plate is provided with a hook portion that projects toward the cut piece recovery box, and a recess is formed in the lower part of the end of the cross member so that the hook portion can be hooked from above. (6) In Disclosure 6, the maximum protruding position on the tip surface of the bracket is equal to the tip position of the lower end of the guide path when viewed from above, or protrudes further toward the cutting piece collection box than the tip position of the lower end of the guide path. (7) In disclosure 7, the cut pieces are crop pieces. (8) Disclosure 8 is a cut piece discharge device of the present disclosure, which sequentially collects cut pieces into the cut piece collection box, The cutting piece collection box that has collected the cutting pieces is moved by lifting the cutting piece collection box with a crane and transporting it to another location. How to recover the cut pieces. [Explanation of symbols]

[0052] 1 crop piece 2 Crop Chute (Guideway) 2A Lower end 3 Crop collection box (cutting piece collection box) 4 Crane 5. Lifting equipment 6 Contact prevention body 7 Support plate 7A Hook part 8 Cross members 8A Recess 9 Bracket 9A Tip surface 10 Installation surface 11 Floor 12 Crop shear (cutting machine) 30 Column (framework)

Claims

1. A cutting piece discharge device provided in a rolling facility, the cutting piece discharge device having a guide path that guides cutting pieces of a metal plate cut by a cutting machine downward and collects the cutting pieces in a cutting piece collection box that is open at the top, a lower end of the guide path is arranged to overlap with the cut piece collection box in a top view; Further, a contact prevention member is provided which is disposed between the lower end of the guide path and the cutting piece collection box and which comes into contact with the cutting piece collection box before the cutting piece collection box comes into contact with the lower end of the guide path when the cutting piece collection box is displaced upward. Cut piece ejector.

2. The contact preventive body is a cross member extending in a width direction of the guideway below the guideway; a plurality of brackets arranged in an extension direction of the cross member and each fixed to the cross member; Equipped with Each bracket protrudes from the cross member toward the cutting piece collection box and is capable of contacting the cutting piece collection box displaced upward.

2. The cutting piece discharge device according to claim 1.

3. The shape of the tip surface of the bracket is such that the amount of protrusion toward the cut piece collection box increases continuously or intermittently from the bottom to the top.

3. The cutting piece discharge device according to claim 2.

4. The end of the cross member is detachably attached to the body of the equipment.

3. The cutting piece discharge device according to claim 2.

5. A support plate is provided which is fixed to the frame of the equipment. The end of the cross member is detachably fixed to the support plate by bolt fastening, Furthermore, A hook portion is provided on the support plate, protruding toward the cutting piece collection box, and a recess is formed at the lower part of the end of the cross member so that the hook portion can be hooked from above.

5. The cut piece discharge device according to claim 4.

6. the maximum protruding position on the tip surface of the bracket is equal to the tip position of the lower end of the guide path when viewed from above, or protrudes further toward the cutting piece collection box than the tip position of the lower end of the guide path; 3. The cutting piece discharge device according to claim 2.

7. The cut pieces are crop pieces. The cut piece discharge device according to any one of claims 1 to 6.

8. The cut pieces are sequentially collected in the cut piece collection box by the cut piece discharge device according to any one of claims 1 to 6, The cutting piece collection box that has collected the cutting pieces is moved by lifting the cutting piece collection box with a crane and transporting it to another location. How to recover the cut pieces.

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