JP6845530B2 - Cooling floor for long metal materials - Google Patents

Description

The present invention relates to a cooling bed that cools a hot-rolled long metal material while rotating it.

Metals in a reddish state after hot rolling in a manufacturing facility for long metal materials (hereinafter sometimes referred to as metal strips) such as rod-shaped materials or tubular materials made of strip steel, Ti alloy, copper alloy, etc. The strips are naturally cooled while being laterally fed in the cooling bed behind the rolling mill. FIG. 9 is a plan view of a hot rolling factory for rod-shaped steel materials shown in Patent Document 1, in which reference numeral C is a rod-shaped steel material (rolled material), reference numeral F is a rod-shaped product, reference numerals 92 and 94 are roller tables, and reference numeral 93. Is a cooling bed and reference numeral 95 is a shearing machine.

The hot-rolled rod-shaped steel material C is conveyed on the roller table 92 and arrives at the left end (upper end of FIG. 9) of the cooling bed 93. From here, the direction is changed by 90 degrees, and the lateral feed, that is, the transport from the upper side to the lower side in FIG. Then, it is sent out to the roller table 94 again, cut to a predetermined length by the shearing machine 95, becomes a steel bar product F, and is carried out by the conveyor 96.

The cooling floor 93 shown in this figure is generally provided with a guide rail that supports the metal strip from the entry side to the exit side, and has a gentle downward slope as a whole. A lateral feed mechanism such as a walking beam or a chain conveyor with claws for forcibly moving is usually provided.

If the metal strip to be rolled has a circular cross section, the metal strip rotates (rolls) in lateral feeding on the cooling bed, so there is no particular problem in uniformly cooling the entire metal strip. .. However, in the case of a metal strip having a square cross section such as a square, a rectangle, or a hexagon or a special cross section such as a deformed cross section, it hardly rolls on the cooling floor. Therefore, for example, the lower contact surface in contact with the members constituting the transport surface is rapidly cooled or supercooled, and the non-contact surface, which is a portion between the contact surfaces, is cooled slowly, and further. Cooling of the upper surface may be promoted with respect to the lower surface. Due to such a difference in cooling rate, uniform cooling is not performed, which causes a problem that, for example, straightness is impaired. For the purpose of preventing such supercooling or bending due to a temperature difference, Patent Document 2 states that in a hot rolling facility for rails, the lower side of the rail conveyed in a sideways posture becomes hot. In order to suppress this, it is described that a forced cooling device that injects water from below toward the rail is provided on the front surface of the finishing rolling mill to make the overall temperature uniform.

Since the metal strip can be cooled by radiating heat during the transfer process on the cooling floor, if the heated metal strip is rotated in sequence, a forced cooling device as described in Patent Document 2 is used. It is possible to eliminate the unevenness of the amount of heat radiation and eliminate the temperature difference and the bending caused by it. As an example, in the past, a worker used a fire chopstick or a kind of spanner to grab both ends of a metal strip to be transported and manually turn it. According to such work, the metal strip can be reliably turned, but it is muscular labor in a high temperature environment, which is not preferable in terms of occupational safety and health.

Patent Document 3 describes a square timber turning device that has improved the working environment by mechanizing such manual turning work. The turning device described in Patent Document 3 is configured to turn a square timber having a rectangular cross section in a process of being conveyed in the longitudinal direction by a roller conveyor. Specifically, a pair of L-shaped turning arms are arranged on both sides of the roller conveyor so as to be offset in the transport direction by the roller conveyor. The turning arm is configured to rotate around the axis in the longitudinal direction of the square timber by rotating the square timber with the square timber placed on the L-shaped bent portion, and to change the direction of the square timber. The arm changes its orientation by scooping up the square timber on the roller conveyor from below. Since the center of rotation of one of the turning arms is above the transport surface by the roller conveyor, the scooped up square lumber has a surface that is a bottom surface on the roller conveyor and a side surface that is orthogonal to the bottom surface. Can be lifted by contact. That is, the bottom surface comes into contact with the surface on the tip end side of the turning arm, and the side surface comes into contact with the surface perpendicular to the surface. Since the surface on the tip side is lifted, the square timber is turned.

On the other hand, since the other turning arm is an arm having a rotation center provided on the opposite side of the roller conveyor with respect to the one turning arm, the square timber lifted by the one turning arm can be used. When the other turning arm receives it from below, the square timber brings the side surface into contact with the surface on the tip end side of the other turning arm, and the bottom surface with the surface perpendicular to the surface. In the state, it is received by the other turning arm. From this state, the one turning arm is rotated downward to retract, and then the other turning arm is rotated so as to lower the square timber onto the roller conveyor. The surface is placed on the other turning arm as a bottom surface, and is placed on the roller conveyor as it is. That is, the square lumber is rotated 90 degrees, and in that state, it is conveyed again in the longitudinal direction by the roller conveyor.

Japanese Unexamined Patent Publication No. 2014-24179 Japanese Unexamined Patent Publication No. 10-314803 Japanese Unexamined Patent Publication No. 2003-320408

However, since the turning device described in Patent Document 3 is configured to place an object such as a square lumber or a steel material on the L-shaped bent portion of the turning arm, the cross-sectional shape is hexagonal or irregular. An object with a shape that does not have a right-angled portion, such as, cannot be stably placed on the turning arm. Since the turning arms are arranged at regular intervals in the longitudinal direction of the object, if the object is not stably placed on the turning arm, it may cause bending. Further, in the turning device described in Patent Document 3, turning arms are arranged on both sides of a roller conveyor to be conveyed, a so-called vertically fed object is temporarily stopped, turned in that state, and then again. It is configured to feed vertically. On the other hand, the cooling bed for cooling the high temperature steel material is configured such that a large number of steel materials are arranged in parallel and cooled while being gradually fed laterally. Therefore, in the device described in Patent Document 3, the turning arm becomes an obstacle and the steel material cannot be laterally fed, and eventually, it cannot be used as a cooling bed for the steel material. Further, in the device described in Patent Document 3, the roller conveyor forms a transport surface, and the rolling arm of the turning device is a mechanism for scooping up and lowering the square timber from the transport surface, and the rolling device is from the roller conveyor. Since the equipment has a completely independent configuration, and as a result, there is no configuration portion shared for transportation and turning, there is an inconvenience that the equipment as a whole is large and costly.

The present invention provides a cooling bed for a long metal material that can be stably rotated and uniformly cooled even if it is a rod-shaped material or a tubular material having an irregular cross-sectional shape, and can be miniaturized or reduced in cost. The purpose is to do.

The present invention, in order to achieve the above object, there a long metal member for cooling bed for cooling the long metal member in the process of traversing in a direction perpendicular to the elongated metallic member with respect to the longitudinal direction The first flap and the second flap on which the long metal material is placed are alternately arranged side by side in the longitudinal direction of the long metal material, and the first flap and the second flap are arranged in the transfer direction of the long metal material. The first axis and the second axis are arranged in the longitudinal direction of the long metal material and in parallel with each other at intervals equal to or longer than the length of the second flap, and the first flap is arranged from the first axis side. The upper surface extending to the second axis side is held by the first axis so as to rotate in a horizontal state and a state of being inclined diagonally downward from the first axis, and the second flap is held on the second axis side. The upper surface extending from the first axis side to the first axis side is held by the second axis so as to rotate in a horizontal state and a state of being inclined diagonally downward from the second axis, and the first flap and the second flap Each of the upper surfaces of the long metal material is inclined downward at an angle corresponding to the cross-sectional shape of the long metal material, so that the length is formed in a V-shaped recess formed between the first flap and the second flap. The long metal material is dropped and one of the first flap and the second flap returns to the horizontal state prior to the other flap so that the long metal material is rotated. Further, the long metal material that has been dropped into the recess and is in contact with the upper surface of either one of the first flap and the second flap is attached to the first flap and the second flap. A push arm for leaning the long metal material against the upper surface of the other one by pressing toward the upper surface of the other is provided between the first flap and the second flap. It is a characteristic cooling bed for long metal materials.

Further, in the present invention, the tip portion on the upstream side in the transfer direction of the long metal material rises with respect to the long metal material whose tip portion is held horizontally by the first flap and the second flap. A lifting blade that lifts the long metal material and slides it downstream in the transfer direction may be arranged between the first flap and the second flap.

In that case, the tip portion of the lifting blade on the upstream side in the transfer direction slides from the upstream side in the transfer direction in a state of rising above the upper surfaces of the first flap and the second flap. It can be used as a stopper surface for abutting and stopping a metal material.

According to the present invention, the first flap and the second flap are inclined obliquely downward, and a long metal material is dropped into the recess formed by the first flap and the second flap. In that case, the long metal material slides down or rolls down on the upper surface of one of the flaps, but in any case, it contacts the upper surface of each flap at the bottom of the recess and is held by these flaps. Will be done. The first flap and the second flap may be tilted at the same time or at different timings, and the tilt angle is set according to the cross-sectional shape of the long metal material. Therefore, since the angle formed by the upper surfaces of the first flap and the second flap coincides with or approximates the angle of a part of the contour of the long metal material, the long metal material brings the two surfaces into contact with the upper surface of each flap. It is held stably by each flap. As a result, the long metal material is cooled uniformly by being cooled while turning, and is stably held even in the process of turning, so that stress such as bending and twisting is unlikely to occur, and as a result, the long metal material is long. It is possible to prevent or suppress the loss of straightness of the metal material. In other words, it is possible to cool long metal materials having various cross-sectional shapes uniformly and without impairing straightness. Further, according to the present invention, since the upper surface of each flap forms the transport surface in a horizontal state, each flap also functions as a turning mechanism and a transport mechanism, and as a result, the device is downsized and the cost is low. Can be achieved. Further, in the present invention, since the transport surface formed on the upper surface of each flap is flat, the long metal material can be laterally fed while being rotated.

It is a perspective view which shows the turning mechanism of the smallest unit which constitutes a part of the cooling bed which concerns on this invention. It is explanatory drawing which saw the turning mechanism of the smallest unit shown in FIG. 1 from the horizontal direction. It is explanatory drawing which shows the rotation state of the flap in FIG. It is explanatory drawing which shows the rotation of a long metal material by the turning mechanism shown in FIGS. 1 to 3. It is explanatory drawing which shows an example of the transfer means of a long metal material. It is a perspective view which shows the turning mechanism of another embodiment provided with a push arm. It is explanatory drawing which saw the turning mechanism shown in FIG. 6 from the horizontal direction. It is explanatory drawing which shows the rotation of a long metal material by the rotation mechanism shown in FIG. 6 and FIG. It is a top view which shows an example of the manufacturing equipment of the rod-shaped steel material known conventionally.

The cooling bed according to the present invention is configured to cool a high-temperature long metal material (hereinafter, may be referred to as a metal strip) while rotating it around an axis along the longitudinal direction thereof. Here, the metal strip includes strip steel such as shaped steel and bar steel, and rod-shaped material or tubular material made of various alloys such as Ti alloy and copper alloy. The mechanism for turning the metal strip has a structure peculiar to the present invention, and an example of the cooling bed including the turning mechanism will be described in detail with reference to the drawings. The cooling bed according to the present invention is configured by arranging the required number of turning mechanisms of the smallest units described below vertically and horizontally (in a matrix).

FIG. 1 is a partial perspective view showing the elements constituting the turning mechanism (hereinafter referred to as a turning unit) of the smallest unit separately. A pair of axes 1 and 2 are arranged parallel to each other and horizontally, and a third axis 3 is arranged below the pair of axes 1 and 2 in parallel with the pair of axes 1 and 2. Flaps (wings) 11 and 21 are attached to each of the first shaft 1 and the second shaft 2 so as to be oriented in one direction toward the other side. That is, the flaps 11 and 21 are arranged alternately in the axial direction of the axes 1 and 2. These flaps 11 and 21 form a transfer surface of the metal strip that is the object to be transferred in the horizontal state, and are inclined so that their respective tips extending in the directions of the shafts 1 and 2 on the opposite side are lowered. It is configured to form a rolling receiving surface of the metal strip, and is attached to the shafts 1 and 2 so as to rotate in such a horizontal state and an inclined state. Specifically, when the shafts 1 and 2 are held so as to rotate about the central axis, the flaps 11 and 21 are fixed to the shafts 1 and 2. When the shafts 1 and 2 are horizontally arranged and fixed, the flaps 11 and 21 may be attached to the shafts 1 and 2 via bearings (not shown).

The example shown in FIG. 1 is an example in which the metal strip is transferred from the left side to the right side in FIG. 1, and therefore the flap 11 on the left side in FIG. 1 is on the entry side (upstream side in the transfer direction). It is a flap 11, and the flap 21 on the right side is the flap 21 on the exit side (downstream side in the transfer direction). Further, although the shafts 1 and 2 are shown greatly separated in FIG. 1 for the sake of clarity, the flaps 11 and 21 are divided in the length direction of the shafts 1 and 2, and the flaps 11 on the entry side and the exit side are shown. Since the shafts 1 and 2 are actually arranged close to each other with a gap equal to or larger than the width of 21 (the length in the transfer direction of the metal strip), the flaps on both sides mesh with each other without interfering with each other. It is configured as follows. FIG. 2 shows a partial cross-sectional view of the axes 1 and 2 as viewed from the axial direction, and the axes 1 and 2 are close to each other so that the flaps 11 and 21 do not interfere with each other (more than the length of each flap 11 and 21). They are arranged (with a space).

Legs (lever portions) 12 and 22 for applying torque for rotation are integrally provided on the flaps 11 and 21. Specifically, each of the flaps 11 and 21 is integrated with the boss portion through which the shafts 1 and 2 penetrate, in a state of extending outward in the radial direction from the boss portion. The legs 12 and 22 extending downward in FIG. 2 are integrated. Therefore, each of the flaps 11 and 21 rotates about the shafts 1 and 2 by the principle of leverage with the shafts 1 and 2 as fulcrums by moving the tips of the legs 12 and 22 in the left-right direction of FIG. It is configured as follows. In the example shown in FIG. 1, the flap 11 on the entry side is configured to rotate clockwise from the horizontal state of FIG. 2, and the flap 21 on the exit side is configured to rotate counterclockwise from the horizontal state of FIG.

As an example, the flap 11 on the entry side will be described. As shown in FIG. 3 (a), by moving the lower end of the leg 12 in the direction of the arrow, the flap 11 rotates clockwise and is shown in FIG. 3 (b). Become in a state. The horizontal state is a state in which the upper surface 11a extending from the shaft 1 side to the shaft 2 side forms a transfer surface for transferring the long metal strip C in the transfer direction, and the inclined state is a state in which the upper surface 11a is transferred. It is in an inclined state in which it is inclined diagonally downward from the axis 1. Although not shown, the flap 21 rotates counterclockwise in a horizontal state in which the upper surface 21a extending from the shaft 2 side to the shaft 1 side forms a transfer surface and a tilted state in which the flap 21 is inclined diagonally downward from the shaft 2. As such, it is held by the shaft 2. The metal strips C mounted on the flaps 11 and 21 lean against the upper surfaces 11a and 21a of the flaps 11 and 21 as the flaps 11 and 21 rotate and incline from the horizontal state in this way. It hangs and tilts.

Subsequently, the driving means for rotating the flaps 11 and 21 will be described with reference to FIGS. 1 and 2. Since the metal strip C to be turned is placed on and turned on the turning units arranged in the axial directions of the axes 1 and 2, the turning units arranged in the axial directions of the axes 1 and 2 are simultaneously or It works in order. Therefore, the lower end of the leg 12 of the flap 11 attached to the predetermined first shaft 1 is connected by the rod 13 arranged in parallel with the first shaft 1. A linear acting type actuator 14 such as a hydraulic cylinder is connected to the rod 13. The rods 13 of the flaps 11 in each turning unit arranged in the transfer direction of the metal strip C are connected to each other, and therefore the rods 13 are connected to the actuator 14. The actuator 14 is configured so that the flap 11 rotates about the shaft 1 together with the legs 12 by pushing or pulling each rod 13 in the left-right direction of FIGS. 1 and 2.

Similarly, the lower end of the leg 22 of the flap 21 attached to the predetermined second shaft 2 is connected by a rod 23 arranged in parallel with the second shaft 2. A linear acting type actuator 24 such as a hydraulic cylinder is connected to the rod 23. The rods 23 of the flaps 21 in each turning unit arranged in the transfer direction of the metal strip C are connected to each other, and therefore the rods 23 are connected to the actuator 24. The actuator 24 is configured so that the flap 21 rotates about the shaft 2 together with the legs 22 by pushing or pulling each rod 13 in the left-right direction of FIGS. 1 and 2. The operation timing and operation amount of each of the actuators 14 and 24 are individually controlled. The control may be performed manually or automatically by the controller 26 described below. Since the flaps 11 and 21 rotate according to the movement amount (stroke amount) of the actuators 14 and 24, the inclination angle of the flaps 11 and 21 is controlled by the actuators 14 and 24.

Explaining the controller 26 for controlling the actuators 14 and 24, an example of the controller 26 is an electronic control device mainly composed of a switching circuit such as a microcomputer, which has a storage unit 27 for storing a control program and is made of a metal strip. A plurality of input devices 28 such as switches and sensors for detecting C are connected. Reference numerals 29 and 30 are drive circuits (driver circuits) that send drive signals to the actuators 14 and 24 according to the control signals obtained from the controller 26, respectively. The control program can be configured to control the tilt angle of each of the flaps 11 and 21 and the timing of tilting from the horizontal state and then returning to the horizontal state according to the target metal strip C. As a result, the two surfaces of the metal strip C can be brought into contact with each of the inclined flaps 11 and 21 to stably hold the metal strip C, and inconveniences such as bending of the metal strip C can be avoided in advance.

Since the legs 12 and 22 rotate within a range of a predetermined angle about the axes 1 and 2, the rods 13 and 23 move in the direction along the central axis and translate in the radial direction. Is held to do. Further, the actuators 14 and 24 are configured to apply a propulsive force and a pullback force to the rods 13 and 23 while allowing the translational motion of the rods 13 and 23. Further, the driving means in the present invention is not limited to the above-described configuration, and if the object to be rotated and transferred is relatively lightweight, the shafts 1 and 2 are rotated, and the flaps 11 and 21 are rotated accordingly. It may be configured to do so.

Further, for example, in the shaft 2 in FIG. 1, if a flap in the opposite direction is inserted by using the portion without the flap, the shaft 1 of the turning unit on the right side can also be used. However, since the left-facing flap and the right-facing flap move differently, the flap that moves the same as the shaft is fixed to the shaft with a key, etc., and the flap that moves differently from the shaft has a bearing structure at the mounting part. Allows it to rotate independently. Then, if the legs 12 are moved by the rod 13, the number of axes can be reduced.

FIG. 4 shows an example of an operation in which the controller 26 controls the rotation of the flaps 11 and 21 according to the above program to rotate the rod-shaped metal strip C resting on the flaps 11 and 21 in the transfer direction. The example shown in FIG. 4 is an example of rotating a metal strip C having a hexagonal cross section.

In FIG. 4A, the flaps 11 and 21 are all horizontal, and the metal strip C is sent from the left by a lateral feed mechanism (not shown) such as a walking beam or a chain conveyor with a claw, and each flap is The state of being placed on the upper surfaces 11a and 21a of 11 and 21 is shown. Here, the flap 11 is the flap on the entry side in the transfer direction, and the flap 21 is the flap on the exit side. In order to make it easier to understand the turning status of the metal strip C, the upper surface facing upward at this stage is shaded. In (a), the metal strip C is supported by the lower lower surface C1 in the direction of gravity in contact with the upper surfaces 11a and 21a of the flaps 11 and 21.

The controller 26 shifts the flaps 11 and 21 in time, and rotates the metal strip C at an angle and an inclined state according to the cross-sectional shape of the metal strip C. In the example shown in FIG. 4, as shown in (b), the flap 21 on the exit side is rotated toward the inclined state before the flap 11 on the entry side. In this operation, the rod (not shown in FIGS. 1 to 4) 23 connected to the lower end of the leg 22 in the second flap 21 is moved to the right in FIG. 2 to rotate the flap 21 counterclockwise. It is an operation. At this time, the lower surface (one surface) C1 of the metal strip C is in contact with the upper surface (one upper surface) 11a of the flap 11 and is horizontally supported. Then, as shown in (c), the flap 11 on the entry side is rotated so as to be in an inclined state. That is, the rod (not shown in FIGS. 1 to 4) 13 connected to the lower end of the leg 12 of the flap 11 is moved to the left in FIG. 2 to rotate the flap 11 clockwise.

In (c), the rotation angles of the flaps 11 and 21 from the horizontal state may be set to the same angle. For example, in the case of the metal strip C having a hexagonal cross section, the rotation of the flaps 11 and 21 from the horizontal state may be set. The angle is preferably about 30 degrees. As a result, V-shaped recesses (recessed portions) 16 are formed by the flaps 11 and 21 between the shafts 1 and 2 to which the flaps 11 and 21 are attached, and the metal strip C is formed by the recesses 16. It is kept in a depressed state. At this time, in addition to the lower surface C1, the metal strip C brings other surfaces C2 adjacent to the lower surface C1 into contact with the upper surfaces 11a and 21a of the flaps 11 and 21 and is supported by both flaps 11 and 21 almost evenly. Has been done. Since such support is performed by each turning unit arranged in the longitudinal direction of the metal strip C, the metal strip C is stably held so as not to be subjected to stress such as twisting or bending.

Then, as shown in FIG. 4D, the flap 21 that supports the other surface C2 is first (prior to the flap 11) returned and rotated toward the horizontal state. Following this, the flap 11 supporting the metal strip C is rotated toward the horizontal state by bringing the lower surface C1 into contact with the lower surface C1. As a result, the surface supporting the metal strip C is replaced with another surface C2 from the lower surface C1. When the flaps 11 and 21 are returned to the horizontal state of (a), as shown in (e), the metal strip C is clockwise by a predetermined angle, for example, an angle of 60 degrees with respect to the initial posture of (a). It is in a turned position and rests on the flaps 11 and 21. This is sent to the right in FIG. 4 to continue cooling, and the same rotating unit on the downstream side further rotates as necessary.

The rotation angle of each of the flaps 11 and 21 from the horizontal state may be appropriately set according to the shape (particularly the cross-sectional shape) of the target metal strip C, and as an example, the metal strip C having a square cross section. In some cases, about 45 degrees is preferable. In addition, about 60 degrees is preferable for the metal strip C having an equilateral triangular cross section (including the shape due to the envelope; the same applies hereinafter), and 36 degrees for the metal strip C having a pentagonal cross section. The degree is preferable, and further, in the case of a metal strip C having an octagonal cross section, about 22.5 degrees is preferable.

Further, the surface supporting the metal strip C so as to be rotated by 60 degrees is not limited to being replaced with another surface C2 from the lower surface C1, and each flap 11 is, for example, in the state shown in FIG. 4 (c). , 21, by making the rotation angles of the metal strips C different from each other from the horizontal state, the metal strips C are the upper surface 11a supporting the lower surface C1 of the metal strips C among the upper surfaces 11a and 21a, and the other surfaces C2. It may be supported by the upper surface 21a which is adjacent to and supports another surface different from the lower surface C1. In this case, when the flaps 11 and 21 are returned to the horizontal state of (a), the metal strip C is placed on the flaps 11 and 21 in a posture in which another surface is supported (a posture rotated by 120 degrees). It will be.

Further, the flaps 11 and 21 are simultaneously rotated from the horizontal state toward the inclined state shown in (c), and then the rotation speeds of the flaps 11 and 21 are changed so that the flaps 11 and 21 reach the inclined state. It may be controlled so that the time shifts. Further, the flap 11 may be rotated in an inclined state first, the metal strip C may be held horizontally by the flap 21, and then the flap 21 may be rotated. In this case, the metal strip C is placed on the flaps 11 and 21 in a posture that is rotated counterclockwise by a predetermined angle, for example, an angle of about 60 degrees with respect to the initial posture of (a).

The control including the direction, angle, speed, and order of rotating the pair of flaps 11 and 12 is not limited to the control shown in the above embodiment, for example, the metal strip C is controlled to reciprocate, or the metal. The strip C may be controlled to continuously rotate in one direction. Further, the metal strip C after the turning has moved by a length D in the transfer direction with respect to the one before the turning. However, the present invention is not limited to this, and the rotation order, rotation direction, rotation speed, rotation angle, etc. of the pair of flaps 11 and 12 are controlled so that the metal strip C is in the same position before and after the rotation. You may. Further, the metal strip C used in the above configuration may be a metal strip having a circular cross section, a rectangular cross section, and a deformed cross section including an angle, a channel, and the like.

As described above, since the metal strip C can be passed between the flap 11 on the entry side and the flap 21 on the exit side, the metal strip C can be laterally fed within that range, but in practice. Then, it is necessary to sequentially feed the metal strip C laterally from the turning unit on the entry side to the turning unit on the exit side. It is preferable to provide the transfer means for that purpose in combination with the above-mentioned large number of turning units. The transfer means may be a conventionally known walking beam, a chain conveyor with claws, or the like, but in consideration of compatibility with the above-mentioned turning unit, cost, and the like, a transfer means having the configuration described below is provided. Is preferable.

As shown in FIG. 5, segment-shaped lifting blades 15 and 25 obtained by cutting a disk into a fan shape are rotatably attached to shafts 1 and 2 via bearings (not shown). Each of the lifting blades 15 and 25 has flat upper surfaces 15a and 25a on which the metal strip C is placed, and the upper surfaces 15a and 25a (particularly the tip thereof) rise upward from the transfer surface 17 of the metal strip C. It is held by the shafts 1 and 2 so as to rotate between the vertical position and the position lowered downward from the transfer surface 17. The mechanism for rotating the lifting blades 15 and 25 as described above may be a mechanism configured in the same manner as the mechanism for rotating the flaps 11 and 21 described above. For example, as shown in FIG. 5, a joint portion extending outward in the radial direction of the shafts 1 and 2 is formed on a part of the lifting blades 15 and 25, and the shafts 1 and 2 are formed below the shafts 1 and 2. Each joint portion is rotatably connected to a rod 5 arranged so as to move back and forth in an orthogonal direction by pinning or the like. The rod 5 is connected to an actuator 18 such as a linear motion hydraulic cylinder. The actuator 18 may be controlled by the controller 26.

Therefore, as the rod 5 moves to the right in FIG. 5, the lifting blades 15 and 25 rotate counterclockwise in FIG. 5, and the upper surfaces 15a and 25a are transferred surfaces 17 as shown in FIG. 5A. As the rod 5 moves to the left in FIG. 5, the lifting blades 15 and 25 rotate clockwise in FIG. 5, and the upper surfaces 15a and 25a move to (b) in FIG. As shown, it rises above the transfer surface 17 and lifts the metal strip C on the flaps 11 and 21. As shown in (b), the metal strip C lifted by the lifting blade 25 attached to the shaft 2 on the exit side slides (or rolls) on the upper surface 25a to the downstream side in the transfer direction. Sent.

In that case, the metal strip C may be abutted against the lifting blade 15 attached to the shaft 1 on the entry side of the turning unit arranged on the downstream side to determine the position thereof. That is, by forming the lifting blades 15 and 25 into a fan shape as described above, the tip surfaces 15b and 25b are used as stopper surfaces, and the metal strip C is brought into contact with the stopper surface to slide down from the upstream side. It is possible to prevent the metal strip C from entering the lower side of the lifting blades 15 and 25 on the downstream side. Then, the metal strip C is turned again by the turning unit on the downstream side, and is further transferred to the downstream side by the lifting blades 15 and 25.

6 and 7 show another embodiment of a turning mechanism with a push arm. In FIG. 7, the same members as described in FIG. 2 are given the same reference numerals, and detailed description of the members to which the same reference numerals are given will be omitted here. The push arm 31 is arranged at a position lower than the flaps 11 and 21 and not interfering with the flaps 11 and 21. The push arm 31 is a member for pushing the inclined metal strip on one of the downwardly inclined flaps 11 and 21, and changing the direction of the inclination toward the other flap. The flaps 11 and 21 are configured to reciprocate from the lower surface (back surface) side to the upper surface (front surface) side. The shape of the push arm 31 is not particularly limited as long as it has such a function. As an example, in the example shown in FIGS. 6 and 7, the push arm 31 is attached to the third shaft 3.

The third axis 3 is parallel to each of the axes 1 and 2 between the first axis 1 and the second axis 2 and below the first axis 1 and the second axis 2. Have been placed. As shown in FIG. 7, the push arm 31 integrates an arm portion extending diagonally upward from the boss portion penetrating the shaft 3 and a leg (lever portion) 32 extending downward from the boss portion. When the shaft 3 is held so as to rotate around its central axis, it is attached to the shaft 3, and when the shaft 3 is fixed, it is a bearing with respect to the shaft 3. It is rotatably attached via (not shown). The tip end portion (upper end portion) 31a of the arm portion is bent so as to project from the lower surface side to the upper surface side of the flaps 11 and 21 which are rotated and inclined. That is, the push arm 31 rotates about the axis 3 by moving the lower end portion of the leg 32 in the left-right direction of FIG. 7, and in the example shown in FIG. 7, the tip end portion 1a of the arm portion is inclined. By projecting from the lower surface side to the upper surface side with respect to the flap 11 on the side, the metal strip on the flap 11 is pushed down toward the flap 21 on the exit side.

An example of the driving means for rotating the push arm 31 will be described with reference to FIG. In FIG. 6, the same members as described with reference to FIG. 1 are designated by the same reference numerals, and detailed description of the members with the same reference numerals will be omitted here. The driving means for rotating the push arm 31 may be configured in the same manner as the driving means for each of the flaps 11 and 21 described with reference to FIG. That is, the rod 33 connecting the tip ends of the legs 32 of the push arm 31 attached to the third shaft 3 is arranged below the shaft 3 in parallel with the shaft 3. A linear acting type actuator 34 such as a hydraulic cylinder is connected to the rod 33. The rods 33 for each push arm 31 in each turning unit arranged in the transfer direction of the metal strip C are connected to each other, and therefore each of the rods 33 is connected to the actuator 24. The actuator 34 is configured so that the push arm 31 rotates about the shaft 3 together with the legs 32 by pushing or pulling each rod 33 in the left-right direction of FIGS. 6 and 7. The actuator 34 is controlled by the controller 26. Reference numeral 19 is a drive circuit that sends a drive signal to the actuator 34 in response to the control signal obtained from the controller 26.

Since the leg 32 rotates within a range of a predetermined angle about the axis 3, the rod 33 is held so as to perform translational movement of movement in the direction along the central axis and parallel movement in the radial direction. ing. Further, each actuator 34 is configured to apply a propulsive force and a pullback force to the rod 33 while allowing the translational motion of the rod 33. Further, the driving means in the present invention is not limited to the above-described configuration, and if the object to be rotated and transferred is relatively lightweight, the shaft 3 is rotated and the push arm 31 is rotated accordingly. It may be configured.

FIG. 8 shows an example in which the push arm 31 is driven to rotate the metal strip C. The example shown in FIG. 8 is an example in which the metal strip C having a rectangular cross section is rotated in the transfer direction. Further, in FIG. 8, in order to make it easier to understand the turning state of the metal strip C, in FIG. 8, the upper surface C3 facing upward is shaded.

FIG. 3 shows a state in which the flaps 11 and 21 are tilted from the state shown in (a) above in which the metal strip C is placed on the flaps 11 and 21 arranged in the axial direction of the shafts 1 and 2 and stopped. It is shown in (b) of 8. In the example shown in FIG. 8, for example, the flap 21 on the exit side is rotated counterclockwise toward the inclined state before the flap 11 on the entry side. At this time, the upper surface 11a of the flap 11 contacts the lower surface C4 of the metal strip C and supports it horizontally. From this state, the flap 11 is rotated toward the inclined state. In this case, the rotation angle of each of the flaps 11 and 21 from the horizontal state may be appropriately set according to the shape (particularly the cross-sectional shape) of the target metal strip C, and as an example, the metal strip C having a rectangular cross section. In the case of, about 45 degrees is preferable.

When the flaps 11 and 21 are rotated, V-shaped recesses (recessed portions) 16 are formed between the shafts 1 and 2 to which the flaps 11 and 21 are attached by the inclined flaps 11 and 21. , The metal strip C is held in a depressed state in the recess 16. In the state shown in (b), the metal strip C is placed on the flap 11 and is inclined according to the flap 11, and the side surface (other surface) C5 on the tip side in the transfer direction is the upper surface 21a of the second flap 21. It is in a state of hitting.

Subsequently, as shown in (c), the push arm 31 is raised while further increasing the inclination angle of each of the flaps 11 and 21 to about 60 degrees. By doing so, the push arm 31 supports the lower surface C4 of the metal strip C from below, and in that state, the inclination angle of each flap 11 and 21 becomes large and the metal strip C slides down, so that each flap 11 and 21 As the support point of the metal strip C is lowered, it moves to the left side of FIG. That is, when the push arm 31 pushes the lower surface C2 of the metal strip C, the clockwise (clockwise) torque in FIG. 8 acts on the metal strip C, and the metal strip C is rotated. .. As a result, the push arm 31 positively applies a reversing force to the metal strip C. As a result, as shown in (d), the metal strip C falls in the opposite direction to the conventional one, and the upper surface (another surface) C3 comes into contact with the upper surface 21a of the flap 21 and leans against it. After that, when the flaps 11 and 21 are returned to the state of (a), as shown in (e), the metal strip C is in the opposite direction to the initial posture of (a), that is, the posture is reversed. It will be placed on the flaps 11 and 21. This is sent to the right in FIG. 8 to continue cooling, and the same turning unit on the downstream side further turns as necessary.

The rotation angle of each of the flaps 11 and 21 from the horizontal state may be appropriately set according to the shape (particularly the cross-sectional shape) of the target metal strip C. Further, as described with reference to FIG. 4, from the horizontal state to the inclined state shown in (b), the flaps 11 and 21 are rotated at the same time, but the rotation speeds of the flaps 11 and 21 are changed to reach the inclined state. It may be controlled so that the time to do is shifted. Further, the flap 11 on the entry side is rotated first to hold the metal strip C horizontally by the flap 21 on the exit side, and the flap 21 on the exit side is held in a state where the flap 11 on the entry side is inclined by a predetermined angle. You may rotate it. Further, when a receiving surface on which the metal strip C is abutted against and placed on the base end portion (the portion on the rotation center side) of the push arm 31 is provided and the flaps 11 and 21 are inclined to form the above-mentioned recesses. It is also possible to configure the receiving surface to be exposed in the recess. With this configuration, the metal strip C is placed on the receiving surface in the recess and integrated with the push arm 31, so that when the push arm 31 pushes and rotates the metal strip C, the metal strip C pushes. It rotates with the arm 31. Therefore, it is possible to prevent or suppress the metal strip C from rubbing against the flaps 11 and 21 and being damaged accordingly.

In FIG. 8, the metal strip C after turning has moved by a length E in the transfer direction as compared with the one before turning. However, the present invention is not limited to this, and the rotation order, rotation direction, rotation speed, rotation angle, etc. of the pair of flaps 11 and 12 are controlled so that the metal strip C is in the same position before and after the rotation. You may. Further, the means for transferring the metal strip C described in FIG. 5 may be provided in the turning mechanism described in FIGS. 6 to 8.

Further, the amount (angle) at which the push arm 31 pushes the metal strip C, the angle at which the flaps 11 and 21 are further tilted from the state where the push arm 31 pushes the metal strip C, and the timing thereof are targeted. It may be appropriately determined according to the shape (particularly the cross-sectional shape) of the metal strip C. For example, by connecting an input unit to the controller 26 and inputting information on the length and cross-sectional shape of the metal strip C to the input unit, the controller 26 can be set to a predetermined program among a plurality of programs stored in the storage unit 27. Program may be read from the storage unit 27 and automatically executed. Further, the amount (angle) of the push arm 31 pushing the metal strip C based on the length and the cross-sectional shape of the metal strip C, and the flaps 11 and 21 are further added from the state where the push arm 31 is pushing the metal strip C. Values such as the angle of inclination and the timing thereof may be appropriately determined for each target metal strip.

Although the embodiments for carrying out the present invention have been described above with reference to examples, the present invention is not limited to these examples, and the present invention is implemented in various embodiments without departing from the gist of the present invention. Of course, it can be done. For example, the flaps 11 and 21 need only be arranged alternately in the longitudinal direction of the long metal material, and need not be arranged alternately in the state of being meshed with each other as shown in the above-described embodiment. The tips of the long metal materials may be arranged alternately so as to be substantially at the same position in the transfer direction of the long metal material or so as to be separated from each other. Further, it is not necessary to alternate one by one, and the arrangement form may be changed as appropriate, such as arranging a plurality of pieces alternately one by one.

1,2,3 ... Shaft, 5 ... Rod, 11,21 ... Flap, 11a, 21a, 15a, 25a ... Top surface, 12,22,32 ... Leg, 13,23,33 ... Rod, 14,24,34 ... Actuator, 15, 25 ... Lifting blade, 26 ... Controller, 31 ... Push arm, C ... Long metal material (metal strip).

Claims (3)

A cooling bed for a long metal material that cools the long metal material in the process of laterally feeding the long metal material in a direction orthogonal to the longitudinal direction thereof.
The first flap and the second flap on which the long metal material is placed are alternately arranged side by side in the longitudinal direction of the long metal material.
The first axis and the second axis are oriented in the longitudinal direction of the long metal material and parallel to each other with a space equal to or longer than the length of the first flap and the second flap in the transfer direction of the long metal material. Placed,
The first flap is held by the first axis so that the upper surface extending from the first axis side to the second axis side rotates in a horizontal state and a state in which the upper surface is inclined diagonally downward from the first axis. With
The second flap is held by the second axis so that the upper surface extending from the second axis side to the first axis side rotates in a horizontal state and a state in which the upper surface is inclined diagonally downward from the second axis.
The upper surfaces of the first flap and the second flap are formed between the first flap and the second flap by inclining diagonally downward at an angle corresponding to the cross-sectional shape of the long metal material. The long metal material is dropped into the V-shaped recess to be formed, and one of the first flap and the second flap returns to the horizontal state in advance of the other flap. It is configured to rotate the shaku metal material ,
Further, the long metal material that has been dropped into the recess and is in contact with the upper surface of either one of the first flap and the second flap is one of the first flap and the second flap. A push arm is provided between the first flap and the second flap so that the long metal material can be leaned against the other upper surface by pressing toward the other upper surface. Cooling floor for long metal materials. In the cooling bed for a long metal material according to claim 1,
In addition to lifting the long metal material, the tip portion on the upstream side in the transfer direction of the long metal material rises with respect to the long metal material held horizontally by the first flap and the second flap. A cooling bed for a long metal material, characterized in that a lifting blade that slides downstream in the transfer direction is arranged between the first flap and the second flap. In the cooling bed for long metal materials according to claim 2.
The tip of the lifting blade on the upstream side in the transfer direction is a long metal material that slides from the upstream side in the transfer direction while rising above the upper surfaces of the first flap and the second flap. A cooling floor for long metal materials, which is characterized by having a stopper surface that abuts and stops.

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