JP5751129B2 - Long material turning device - Google Patents

Description

  The present invention relates to a turning device for turning a long material such as a flat steel material or a steel bar material.

  In a long material rolling facility, direct feed rolling is generally performed in which a plurality of rolling mills are arranged in a line, and the long material is conveyed by one conveyance line for rolling. However, since such direct feed rolling requires a vast site that is long in one direction, there is a difficulty that cannot be implemented in a place where the site area cannot be secured. Therefore, a rolling facility has been proposed in which rolling mill rows are arranged in parallel to form two or more parallel conveying lines, and a long material is conveyed while being turned by a turning device.

  For example, Patent Literature 1 discloses a rolling facility that includes two parallel conveyance lines (rolling mill rows) and turns a long material by a turning portion (turning device) provided on one end side of both conveyance lines. . That is, the long material conveyed on the upstream conveyance line is turned by about 180 ° while being curved at the turning portion, and is transferred to the downstream conveyance line.

Japanese Patent Laid-Open No. 10-314810

  However, in Patent Document 1, since it is necessary to bend the long material at the turning portion, the long material having a large cross-sectional dimension may not be bent at the turning portion. That is, in the configuration of Patent Document 1, only a bendable long material can be turned, and there is a difficulty in lacking versatility.

  That is, the present invention has been proposed in order to solve the problems inherent in the long material turning device according to the prior art, and provides a highly versatile long material turning device. For the purpose.

In order to solve the above-mentioned problem and achieve an intended purpose, a long material turning device according to claim 1,
In a long material turning device that is disposed on one end side of two conveyance lines arranged in parallel and turns a long material from an upstream conveyance line to a downstream conveyance line,
A curved turning means for turning the long material received from the upstream conveyance line while curving it and sending it to the downstream conveyance line;
A first passage opening provided on the curved rolling means, and opened on an extension line of the upstream conveyance line; and a second passage opening opened on an extension line of the downstream conveyance line;
A long material that is provided on the opposite side of the conveyance line across the curved turning means and is received via the first passage port at a first position on an extension of the upstream conveyance line is conveyed downstream. Linear turning means for translating to a second position on the extension of the line and sending it to the downstream conveying line via the second passage port;
The first posture in which the first and second passage openings are closed and the long material is turned by the curved turning means, and the first and second passage openings are opened, and the long material is obtained by the linear turning means. The gist of the present invention is that it is provided with switching means for changing the posture to the second posture in which the device is rotated.
According to the first aspect of the present invention, since the long material is turned by either the curved turning means or the linear turning means by switching the switching means, the long material is lengthened by an appropriate method according to the cross-sectional shape of the long material. It is possible to turn the scale material. Accordingly, long materials having various cross-sectional shapes can be turned, and versatility can be improved.

In the long material turning device according to claim 2, the linear turning means includes a conveyance table on which the long material is slidably mounted, and a pushing portion protruding upward from the conveyance table, The gist is to translate the long material from the first position to the second position by linearly moving the pushing portion to push the long material.
According to the invention of claim 2, since the long material is pushed and translated by the push portion, the long material can be turned without being bent.

In the long material turning device according to claim 3, the long material is rotated to a posture suitable for bending around an axis extending in a longitudinal direction of the long material, provided on an entrance side of the bending turning means. The gist of the present invention is to provide a rotating means.
According to the third aspect of the invention, since the long material is rotated to a posture suitable for bending by the rotating means, the long material can be smoothly bent by the bending turning means.

  According to the long material turning device according to the present invention, since the long material can be turned by an appropriate method according to the cross-sectional shape of the long material, versatility can be improved.

It is explanatory drawing which shows a part of rolling line in which the turning apparatus based on the Example of this invention was implemented. It is a top view which shows the principal part of the rolling apparatus which concerns on an Example, (a) shows the state which has a long material in a 1st position, (b) shows the state which has a long material in a 2nd position. . It is the II sectional view taken on the line of Fig.2 (a). It is sectional drawing which shows the cross-sectional shape of a long material, Comprising: (a) shows a flat steel material, (b) shows a bar steel material, (c) shows an oval steel material. It is explanatory drawing which shows a mode that a long material is rotated with a 1st rotation means, Comprising: (a) shows the perspective view before a long material is rotated, and the side view seen from the AA line side, (b) shows the perspective view of the state after rotating a elongate material, and the side view seen from the BB line side.

  Next, a preferred embodiment of the long material turning device according to the present invention will be described in detail below with reference to the accompanying drawings. In the following description, a case where the turning device of the present invention is applied to a rolling line for rolling a long steel material such as a flat steel material having a rectangular cross section, a bar steel material having a circular cross section, or an oval steel material having an elliptical cross section is exemplified. To do. Further, in the following explanation, “front”, “back”, “left”, and “right” are designated with reference to the arrows in FIG. 1, and “up” and “lower” are designated with reference to the arrows in FIG. To do.

  FIG. 1 is a schematic diagram illustrating a turning device 10 according to an embodiment and a part of a rolling line L in which the turning device 10 is installed. The rolling line L includes a first conveying line L1 on the upstream side that conveys a long material W heated in a heating furnace (not shown) in one direction (from right to left), and a front required for the first conveying line L1. A downstream second transport line L2 is provided which is disposed in parallel (parallel) with a spacing therebetween and transports the long material W in the opposite direction (from left to right) with respect to the first transport line L1. In addition, the long material W conveyed by the 1st and 2nd conveyance lines L1 and L2 maintains the high temperature state, and can be bent. The turning device 10 of the embodiment is installed on one end side (left end side in FIG. 1) of the first and second transport lines L1 and L2, and moves the long material W from the first transport line L1 to the second transport line L2. It is configured to turn. The first transport line L1 is provided with a plurality of feed rollers 12 arranged in the transport direction, and the second transport line L2 has a pair of rolling rolls 14 and 14 that differ in rotation axis by 90 °. A plurality of them are arrayed in the transport direction.

  The turning device 10 is provided on a side opposite to the first and second transport lines L1 and L2 with the bending turning means 16 turning while turning the long material W, and the bending turning means 16 interposed therebetween. The straight rolling means 18 that rolls the material W without bending (while keeping the straight line), the first passage opening 20 and the second passage opening 22 that are opened in the bending turning means 16, and the first and second passage openings 20 and 22. Is basically composed of switching means 24 for opening and closing the switch. Further, the rolling device 10 of the embodiment includes a first rotating means (rotating means) 26 and a first rotating means 26 for rotating the long material W around the axis extending in the longitudinal direction on the entry side and the exit side of the curved turning means 16. A two-rotation means 28 is provided.

  The curved turning means 16 includes an inner arc-shaped wall 30 extending in a substantially U-shape, a substantially U-shaped outer arc-shaped wall 32 provided so as to surround the inner arc-shaped wall 30 from the outside, and both arc-shaped walls 30. , 32 and an arcuate guide path 34 defined between the two. The rear end of the inner arcuate wall 30 and the rear end of the outer arcuate wall 32 face one end of the first transport line L1, and are transported from the first transport line L1 between both ends. An introduction port 36 for receiving the elongated material W is formed. Further, the front end portion of the inner arcuate wall 30 and the front end portion of the outer arcuate wall 32 face one end side of the second transport line L2, and the long material W is second between the both end portions. A lead-out port 38 for sending out to the transport line L2 is formed. First installation recesses 40 and 40 are formed on the inner arcuate wall 30 and the outer arcuate wall 32 on the introduction port 36 side so as to correspond to the front and rear, respectively, and the introduction pinch roller 42 is rotatable in each installation recess 40. It is arranged. The introduction pinch rollers 42 and 42 are rotated by a driving source (not shown), and are configured to send the long material W to the turning device 10 while being held between the introduction pinch rollers 42 and 42. Further, second installation recesses 44, 44 are formed on the inner arcuate wall 30 and the outer arcuate wall 32 on the outlet port 38 side so as to correspond to the front and rear, respectively, and the installation pinch rollers 46, 46 is rotatably arranged. The lead-out pinch rollers 46 and 46 are rotated by a driving source (not shown) similarly to the lead-in pinch rollers 42 and 42, and the long material W is sandwiched between the lead-out pinch rollers 46 and 46 and second The feed line L2 is configured to be sent out.

  As shown in FIG. 1, the arcuate guide path 34 extends in a U shape (arc shape), and the long material W moves while the long material W is curved along the guide path 34. W is turned 180 °. That is, the long material W introduced into the arcuate guide path 34 slides along the inner side surface (the side surface facing the inner arcuate wall 30) of the outer arcuate wall 32, thereby curving the arcuate guideway 34. Turned around. The first passage port 20 is formed on the outer arcuate wall 32 so as to be positioned on the extended line of the first transport line L1. The second passage port 22 is formed so as to be positioned on the extended line of the second transport line L2 in the outer arcuate wall 32. In other words, the first passage port 20 is formed in the outer arcuate wall 32 at a position and size through which the long material W linearly fed from the first transport line L1 to the linear turning means 18 can pass. The second passage port 22 is formed in the outer arcuate wall 32 at a position and size through which the long material W linearly fed from the linear rolling means 18 to the second transport line L2 can pass.

  As shown in FIGS. 1 and 3, the linear turning means 18 basically includes a transport table 48 that supports the long material W and a transport mechanism 50 that moves the long material W in parallel. The transfer table 48 is formed in a rectangular shape that is long in the left-right direction, and is disposed to the left of the curved turning means 16. The placement surface (upper surface) of the transfer table 48 is a flat surface with low frictional resistance so that the long material W can slide. A plurality of rectangular installation holes 52 (four in the embodiment) are formed in the front and rear edges of the transfer table 48 in the horizontal direction. The rear installation holes 52 are arranged on an extension of the first transport line L1, and the first roller 54 is rotatably arranged in the rear installation holes 52 via a rotation shaft extending in the front-rear direction. Established. The front installation holes 52 are arranged on an extension line of the second transport line L2, and the second rollers 56 are rotatably disposed in the front installation holes 52 via a rotation shaft extending in the front-rear direction. Has been. Each of the first roller 54 and the second roller 56 slightly protrudes from the mounting surface of the transport table 48, and linearly feeds in the left-right direction while supporting the long material W. ing. The first roller 54 is configured to send the long material W to the left, and the second roller 56 is configured to send the long material W to the right. Both the first roller 54 and the second roller 56 are rotated by a drive source (not shown).

  As shown in FIG. 2 (a), when the entire long material W is supported by the first roller 54 and the long material W is positioned at the first position extending along the rear edge of the transport table 48, The rotation of the first roller 54 is stopped. As shown in FIG. 1, this first position is located on an extension line of the first transport line L1. The second roller 56 waits in a state where the long material W moved by the transport mechanism 50 is stopped, and the second roller 56 extends along the front edge of the transport table 48 as shown in FIG. When the long material W arrives at the position, the long material W is supported. The rear end of the second roller 56 has a taper (not shown) that gently slopes upward from the rear side to the front side, and the long material W that has arrived at the second position is the first one. The two rollers 56 are configured to be placed smoothly. As shown in FIG. 1, the second position is located on an extension line of the second transport line L2. When the second roller 56 is rotated, the long material W is linearly fed in the other direction (from left to right) so as to pass through the second passage port 22. The conveying table 48 is formed with a plurality of (three in the embodiment) long holes 58 extending in the front-rear direction at positions avoiding the first and second rollers 54 and 56. The rear end of the long hole 58 is located behind the first roller 54 (first position), and the front end of the long hole 58 is located forward of the second roller 56 (second position).

  As shown in FIGS. 2A, 2 </ b> B, and 3, the transport mechanism 50 that moves the long material W forward is a pair of rotating members 60 that are provided below the transport table 48 and separated in the front-rear direction. , 60, a plurality (three in the embodiment) endless chains 62 wound around the rotating members 60, 60, and a pushing portion 64 attached to each endless chain 62. The rotating members 60, 60 are columnar bodies that are long in the left-right direction, and are rotated in forward and reverse directions around an axis extending in the left-right direction. Both rotating members 60, 60 are rotated synchronously by a driving source (not shown). As shown in FIG. 1, the endless chain 62 is wound around rotating members 60 and 60 so as to correspond to the long holes 58, and rotates around the rotating members 60 and 60. Yes. The pushing portion 64 is a rod-like body extending in the vertical direction, and an upper portion thereof protrudes toward the conveyance surface side of the conveyance table 48 through the long hole 58 and can be brought into contact with the long material W. . The pushing section 64 is configured to reciprocate back and forth through substantially the entire long hole 58 as the endless chain 62 circulates. Here, as shown in FIG. 2A, the pushing portion 64 is located at the rear end of the long hole 58 in a state where the rotating members 60, 60 are stopped, and behind the long material W at the first position. Waiting. And when the rotating members 60 and 60 rotate, all the pushing parts 64 start moving all at once, and it is comprised so that it may move ahead at the same speed. As a result, the pushing portion 64 pushes the long material W and translates the long material W from the first position to the second position. When the pushing portion 64 returns to the rear end side of the long hole 58, the rotary members 60, 60 are rotated in the opposite direction, and the pushing portion 64 moves backward through the long holes 58. At this time, the pushing portion 64 is configured to tilt downward from the conveyance surface of the conveyance table 48 with the shaft portion 64a as an axis. Therefore, as shown by a two-dot chain line in FIG. 3, the pushing portion 64 tilts downward when returning from the second position to the first position, thereby waiting for the next long material W at the first position. The pushing portion 64 can move to the rear end of the long hole 58 without interference.

  The switching means 24 of the embodiment includes a first swing member 66 provided at the first passage port 20 and a second swing member 68 provided at the second passage port 22. The first rocking member 66 is pivotally supported by a first rocking shaft 66a extending in the up-down direction on the left front edge side that defines the first passage port 20 in the outer arcuate wall 32. The first swinging member 66 is swung around the first swinging shaft 66a by a drive source (not shown), and has a first posture (solid line in FIG. 1) and a second posture (two-dot chain line in FIG. 1). The posture is supposed to change. The first swinging member 66 in the first posture is configured to close the first passage port 20 and retreat from the arcuate guide path 34. Thus, the long material W is restricted from passing through the first passage port 20, and the long material W is rotated by the curved turning means 16. Further, the first swinging member 66 in the first posture slides and guides the long material W that moves on the arcuate guide path 34 with the side surface on the arcuate guide path 34 side aligned with the arc shape of the outer arcuate wall 32. It is configured as follows. The first swinging member 66 in the second posture is configured to open the first passage port 20 and face the arcuate guide path 34 side. Accordingly, the long material W is allowed to pass through the first passage port 20, and the long material W is turned by the linear turning means 18.

  The second rocking member 68 is pivotally supported by a second rocking shaft 68a extending in the vertical direction at the left rear edge defining the second passage port 22 in the outer arcuate wall 32. The second swinging member 68 is swung around the second swinging shaft 68a by a drive source (not shown), and has a first posture (solid line in FIG. 1) and a second posture (two-dot chain line in FIG. 1). The posture is supposed to change. The second swinging member 68 in the first posture is configured to close the second passage port 22 and retract from the arcuate guide path 34. Accordingly, the long material W is restricted from passing through the second passage port 22. Further, the second swinging member 68 in the first posture slides and guides the long material W that moves along the arcuate guide path 34 with the side surface on the arcuate guide path 34 side aligned with the arc shape of the outer arcuate wall 32. It is configured as follows. The second swinging member 68 in the second posture is configured to open the second passage port 22 and face the arcuate guide path 34 side. Accordingly, the long material W is allowed to pass through the second passage port 22, and the long material W can be sent from the linear turning means 18 to the second transport line L2 via the second passage port 22. It becomes.

  Here, the postures of the first and second swinging members 66 and 68 are changed based on the cross-sectional shape of the long material W in the short direction. That is, when the cross-sectional shape of the long material W satisfies the first condition suitable for turning by the bending turning means 16, the first and second swinging members 66 and 68 are in the first posture. On the other hand, when the cross-sectional shape of the long material W satisfies the second condition suitable for rolling by the linear rolling means 18, the first and second swinging members 66 and 68 are in the second posture. Specifically, the first condition is a cross-sectional shape in which the long material W can be smoothly curved by the curved turning means 16, and for example, the long material W is a flat steel material (see FIG. 4A). In the case where the vertical thickness a is 9 mm <a <40 mm and the longitudinal width b is b <90 mm, and the long material W is a round steel material (see FIG. 4B), the diameter c Means a cross-sectional shape satisfying c <50 mm. When the long material W is an oval steel material (see FIG. 4C), the vertical thickness d is 9 mm <d <40 mm and the longitudinal width e is e <90 mm as in the case of a flat steel material. A cross-sectional shape that satisfies the above. The second condition is a cross-sectional shape in which it is difficult or impossible for the long material W to be curved. In the embodiment, the long material W is a flat steel material, and the thickness a is a ≦ 9 mm or 40 mm ≦. a or a cross-sectional shape in which the width b satisfies b ≧ 90 mm. In the case where the long material W is a round steel material, it refers to a cross-sectional shape in which the diameter c satisfies c ≧ 50 mm. In the case of an oval steel material, as in the case of a flat steel material, it refers to a cross-sectional shape that satisfies a thickness d of d ≦ 9 mm or 40 mm ≦ d, or a width e of e ≧ 90 mm. However, the specific numerical ranges of the first condition and the second condition shown here are examples, and the first condition and the second condition are determined according to the material, temperature, transport speed, etc. of the long material W. Conditions can be changed as appropriate.

  Both the first rotating means 26 and the second rotating means 28 have the same structure. Therefore, in the following description, the 1st rotation means 26 is mainly demonstrated, the 2nd rotation means 28 is attached | subjected with the same code | symbol, and detailed description is abbreviate | omitted. As shown in FIGS. 5A and 5B, the first rotating means 26 is provided on the disk-shaped rotating base 70 and the first and second transport lines L1 and L2 side (right side) of the rotating base 70. This is basically composed of a pair of fixed rollers 72, 72. The rotating base 70 is configured to rotate 90 ° about an axis along the longitudinal direction of the long material W. Further, the rotation base 70 is formed with an insertion hole 70a passing through the center of the rotation base 70 in the left-right direction so that the long material W can pass through the insertion hole 70a.

  The fixed rollers 72 and 72 are configured to be rotatable via an axis in a direction orthogonal to the longitudinal direction of the long material W. The fixed rollers 72 and 72 are configured to rotate together with the rotating base 70 when the rotating base 70 rotates. The separation distance between the two fixed rollers 72 and 72 is configured to be changed by an operating means (not shown). That is, when the long material W is passed, the distance between the fixed rollers 72 and 72 is increased, and the long material W is fed by the rollers 72 and 72. On the other hand, when the long material W is rotated, the fixed rollers 72 and 72 are close to each other, and the long material W is held by the fixed rollers 72 and 72 (see FIG. 5A). And it is comprised so that the elongate material W may be rotated when the rotary base | substrate 70 rotates in the state which hold | maintained the elongate material W with the fixed rollers 72 and 72 (refer FIG.5 (b)). As shown in FIGS. 5 (a) and 5 (b), the first rotating means 26 of the embodiment is counterclockwise when the long material W is viewed from the upstream side of the first transport line L1. The long material W is rotated.

  Here, the first rotating means 26 (second rotating means 28) is set to rotate the long material W when the following condition is satisfied. That is, when the first condition that the cross-sectional shape of the long material W that is conveyed along the first conveyance line L1 (before reaching the turning device 10) can be bent satisfies the third condition, The first rotating means 26 rotates the long material W. As shown in FIG. 5A, the third condition is that the cross-sectional shape of the long material W when it arrives at the first rotating means 26 is long in the front-rear direction (width direction). It means a condition in which a load is applied to the long material W when it is turned by the bending turning means 16, and the long material W cannot be bent smoothly. That is, as shown in FIGS. 5 (a) and 5 (b), a long material W having a posture that is long in the front-rear direction is rotated by 90 ° by the first rotating means 26, and a long posture in the vertical direction (curved) ), The long material W can be smoothly curved by the bending rolling means 16. Specifically, as shown in FIG. 4A, the third condition is that, when the long material W is a flat steel material, in the cross-sectional shape of the long material W in a state where it has arrived at the first rotating means 26, The ratio of the thickness a in the vertical direction to the width b in the front-rear direction is preferably less than 1/8, more preferably less than 1/9. Further, as shown in FIG. 4C, when the long material W is an oval steel material, the ratio of the thickness d in the vertical direction to the width e in the front-rear direction is preferably less than 1/8, and more preferably 1 The case where it becomes less than / 9. However, the specific numerical value of the third condition shown here is an example, and the third condition can be appropriately changed according to the material, temperature, and the like of the long material W. When the long material W is a steel bar (see FIG. 4B) or when the cross-sectional shape of the long material W satisfies the second condition, it is not necessary to rotate the long material W, and the first rotation The means 26 allows the long material W to pass through.

  When the long material W is rotated by the first rotating means 26, the second rotating means 28 rotates the long material W by 90 ° to return the long material W to its original posture. is there. Accordingly, the long material W that has not been rotated by the first rotating means 26 is not rotated by the second rotating means 28. In this case, the second rotating means 28 allows the long material W to pass. The rotating base 70 of the second rotating means 28 is rotated in the same direction as the rotating base 70 of the first rotating means 26. That is, the second rotating means 28 rotates the long material W in the counterclockwise direction while viewing the long material W from the downstream side of the second transport line L2 (FIGS. 5A and 5B). reference). Accordingly, the long material W rotated by the second rotating means 28 is returned to the state before being rotated by the first rotating means 26 (that is, the upper and lower surfaces of the long material W are not turned over. ).

  Next, a method for turning the long material W by the turning device 10 according to the embodiment will be described.

(When the cross-sectional shape of the long material W satisfies the first condition and the third condition)
When the cross-sectional shape of the long material W is the first condition, the first swing member 66 and the second swing member 68 are in the first posture. At this time, as shown in FIG. 1, the first passage port 20 is closed by the first swing member 66, and the second passage port 22 is closed by the second swing member 68. Further, the first and second swinging members 66 and 68 are retracted from the arcuate guide path 34. When the long material W transported along the first transport line L1 arrives at the first rotating means 26, the long material W is sent by the fixed rollers 72 and 72 and is inserted through the insertion hole 70a. Since the cross-sectional shape of the long material W satisfies the third condition, the first rotating means 26 rotates the long material W by 90 ° to obtain a posture suitable for bending. That is, the fixed rollers 72 and 72 stop rotating, and the fixed rollers 72 and 72 are close to each other to hold the long material W (see FIG. 5A). Then, as shown in FIG. 5B, the rotary base 70 rotates 90 ° together with the fixed rollers 72, 72, and the long material W is elongated in the vertical direction from the long posture in the front-rear direction (width direction). Change to a posture (a posture suitable for bending).

  Next, when the fixed rollers 72, 72 resume rotation and the long material W passes through the first rotating means 26, it is introduced into the arcuate guide path 34 through the introduction port 36. Then, the long material W is fed by the introduction pinch rollers 42, 42, and when the leading end of the long material W arrives at the first swing member 66, the long material W is moved along the first swing member 66. Is curved. At this time, since the side surface of the first swinging member 66 in the first posture is curved so as to align with the outer arcuate wall 32, the long material W is smoothly guided along the first swinging member 66. The The long material W moves along the arcuate guide path 34 while curving in an arc along the side surface of the outer arcuate wall 32. Here, since the long material W has a vertically long posture by the first rotating means 26, the long material W can be smoothly bent by the arcuate guide path 34, and the load of the long material W applied during the bending is long. Can be reduced. Therefore, the quality deterioration of the long material W can be suppressed. Further, when the long material W moves along the arcuate guide path 34 and arrives at the second swing member 68, the long material W is slid and guided to the second swing member 68, and the long material W is moved to the first swing member 68. 2 Curved to the conveyance line L2 side (to the right). At this time, since the side surface of the second swinging member 68 in the first posture is curved so as to be aligned with the outer arcuate wall 32, the long material W is smoothly guided without being caught by the second swinging member 68. The

  When the leading end of the long material W arrives at the lead-out pinch rollers 46, 46, the long material W is sent by the lead-out pinch rollers 46, 46 and sent out from the curved turning means 16 to the second transport line L2. When the long material W arrives at the second rotating means 28, the long material W is rotated by 90 ° by the second rotating means 28, and the original posture (the posture before being rotated by the first rotating means 26) is obtained. Return. And the long material W is moved to the 2nd conveyance line L2, and the rolling by the rolling rolls 14 and 14 is performed. In this way, in the curved turning means 16, the long material W is turned 180 ° from the first conveying line L1 toward the second conveying line L2 while moving along the arcuate guide path 34, and from the first conveying line L1. It becomes possible to transfer the long material W to the second transport line L2.

(When the cross-sectional shape of the long material W satisfies the first condition and does not satisfy the third condition)
When the cross-sectional shape of the long material W satisfies only the first condition, the long material W can be bent in the posture during conveyance in the first conveyance line L1. For this reason, it is not necessary to rotate the long material W with the 1st rotation means 26, and the 1st rotation means 26 passes the long material W as it is. The long material W that has passed through the first rotating means 26 is introduced into the arcuate guide path 34 through the introduction port 36, and moves while curving the arcuate guide path 34. In the same manner as described above, the long material W is turned 180 ° while moving along the arcuate guide path 34 and is sent out from the curved turning means 16 to the second transport line L2. When the long material W arrives at the second rotating means 28, the second rotating means 28 allows the long material W to pass through without rotating, and the long material W is moved to the second transport line L2. In this way, when the cross-sectional shape of the long material W satisfies only the first condition, the long material W is sent to the curved turning means 16 without being rotated by the first rotating means 26, and thus the long material W is efficiently transferred to the first material. It can be turned from the conveyance line L1 to the second conveyance line L2. In addition, since the cross-sectional shape of the long material W satisfies the first condition, it can be bent without any trouble by the bending turning means 16, and an excessive load is not applied to the long material W.

(When the cross-sectional shape of the long material W satisfies the second condition)
When the cross-sectional shape of the long material W satisfies the second condition, the first swing member 66 and the second swing member 68 are in the second posture. That is, as shown in FIGS. 2 (a) and 2 (b), the first swinging member 66 swings about the first swinging shaft 66a to open the first passage port 20 and in the arc-shaped guide path 34. It will be in the state which faced. Further, the second swinging member 68 swings about the second swinging shaft 68a, opens the second passage port 22, and faces the arcuate guide path 34. Further, the pushing portion 64 of the transport mechanism 50 is located on the rear end side of the long hole 58 and is waiting behind the first position. When the long material W transported on the first transport line L1 arrives at the first rotating means 26, the first rotating means 26 allows the long material W to pass through without rotating. The long material W enters the arcuate guide path 34 through the introduction port 36 and is sent leftward by the introduction pinch rollers 42 and 42. Then, as shown in FIG. 2A, the long material W passes through the first passage port 20 linearly and is transferred onto the transport table 48.

  The long material W that has passed through the first passage port 20 is fed leftward by the first roller 54. Then, as shown in FIG. 2A, when the long material W arrives at the first position, the rotation of the first roller 54 is stopped, and the long material W is stopped at the first position. Thus, since the 1st passage port 20 and the 1st position are located on the extension line of the 1st conveyance line L1, it is long material W from the 1st conveyance line L1 to the 1st position via the 1st passage port 20. Can be sent linearly. As shown in FIG. 2A, the long material W at the first position is in a state of extending in front of the pushing portion 64. Next, the rotating members 60, 60 rotate to circulate the endless chain 62, and the pushing parts 64 start to move forward all at once. Then, as shown in FIG. 3, the pushing portion 64 abuts the long material W from the rear, thereby moving the long material W forward. Here, since all the pushing parts 64 move through the long hole 58 at the same speed, the long material W moves on the transport table 48 in a parallel posture.

  As shown in FIG. 2B, when the long material W arrives at the second position, the rotating members 60 and 60 stop, and the long material W stops in a state supported by the second roller 56. . Since the second roller 56 has a tapered end at the rear side, the long material W is transferred onto the second roller 56 without being caught by the second roller 56 and is smoothly moved to the second position. Can arrive. Next, the second roller 56 rotates to feed the long material W linearly to the right, and the long material W passes through the second passage port 22. The long material W that has entered the arcuate guide path 34 via the second passage port 22 is sent to the left by the lead-out pinch rollers 46 and 46 and arrives at the second rotating means 28. Here, since the long material W is not rotated by the first rotating means 26 (the third condition is not satisfied), the second rotating means 28 passes the long material W without rotating. And the long material W which passed the 2nd rotation means 28 is moved to the 2nd conveyance line L2, and is rolled with the rolling rolls 14 and 14. FIG. Thus, since the 2nd position and the 2nd passage mouth 22 are located on the extension line of the 2nd conveyance line L2, long material W is linearly connected via the 2nd passage mouth 22 from the 2nd position. 2 can be sent to the conveying line L2. Further, since the linear rolling means 18 is rotated by moving the long material W in parallel, even the long material W that is difficult to be bent can be rotated without any trouble. When the pushing portion 64 arrives at the front end of the long hole 58, the rotating members 60 and 60 are reversely rotated to move the pushing portion 64 backward toward the long hole 58. At this time, since the pushing portion 64 is tilted downward from the carrying surface of the carrying table 48, the pushing portion 64 does not interfere with the next long material W waiting at the first position, and the pushing portion 64 has the long hole 58. It can move to the rear end. As described above, since the pushing portion 64 is moved backward and returned to the rear end of the long hole 58, the moving distance can be shortened as compared with the case where the pushing portion 64 is rotated and returned to the rear end of the long hole 58. Therefore, since the cycle time of the pushing part 64 can be shortened, the long material W can be efficiently translated.

  As described above, according to the turning device 10 for the long material W according to the embodiment, by switching the switching means 24, it can be turned by a method according to the cross-sectional shape of the long material W. The long material W having various cross-sectional shapes can be appropriately turned, and versatility can be improved. Further, since the long material W is turned by a method optimal for the cross-sectional shape of the long material W, the long material W can be smoothly turned without applying a load.

In addition, the rotation apparatus shown in the Example can be variously modified as shown below.
(1) In the embodiment, the first and second swinging members that change the posture to the first posture and the second posture by swinging are exemplified as the switching unit, but the switching unit is not necessarily configured to swing. It is not necessary to adopt. For example, a configuration in which the switching unit slides from the first position to the second position or a structure that moves in parallel may be employed.
(2) In the embodiment, the second rotating means is arranged on the outlet side of the curved turning means to return the long material to the original posture, but it is not always necessary to provide the second rotating means. The long material may be sent to the second conveying line as it is in the posture rotated by the first rotating means.
(3) In the examples, flat steel materials, bar steel materials, and oval steel materials have been exemplified as the long materials, but long materials having other polygonal shapes such as a triangular cross-section can be applied to the present invention. is there.
(4) In the embodiment, the arc guide path is defined by the outer arc-shaped wall and the inner arc-shaped wall, but the inner arc-shaped wall is omitted, and the long material is guided on the side surface of the outer arc-shaped wall on the conveyance line side. Also good.
(5) In the embodiment, the linear turning means is configured to translate the long material by the transport table and the transport mechanism. However, as long as the long material can be translated and rotated, Other configurations may be employed.

16 curved turning means, 18 linear turning means, 20 first passing port, 22 second passing port 24 switching means, 26 first rotating means (rotating means), 48 transport table, 64 feed section L1 first transport line (upstream side) Transport line)
L2 Second transport line (downstream transport line), W Long material

Claims (3)

A long material that is arranged on one end of two conveyance lines (L1, L2) arranged in parallel and turns the long material (W) from the upstream conveyance line (L1) to the downstream conveyance line (L2). In the turning device of
A curved turning means (16) for turning and feeding the long material (W) received from the upstream conveying line (L1) to the downstream conveying line (L2) while curving,
A first passage opening (20) provided on the curved rolling means (16) and opened on the extension line of the upstream conveyance line (L1) and a second passage opened on the extension line of the downstream conveyance line (L2). Mouth (22),
The first passage port (20) is provided at a first position on the opposite side of the conveying line (L1, L2) across the curved turning means (16) and on an extension line of the upstream conveying line (L1). ) Through which the long material (W) received through the second transfer port (22) is translated to the second position on the extension line of the downstream transfer line (L2) and the downstream transfer line (22). Linear turning means (18) for sending to (L2);
A first posture in which the first and second passage openings (20, 22) are closed and the long material (W) is turned by the curved turning means (16), and the first and second passage openings (20 , 22) and switching means (24) for changing the posture to a second posture in which the long material (W) is turned by the linear turning means (18). Turning device.   The linear rolling means (18) includes a transport table (48) on which a long material (W) is slidably mounted, and a push-out portion (64) protruding upward from the transport table (48). 2. The long material according to claim 1, wherein the push portion (64) moves linearly and pushes the long material (W) to translate the long material (W) from the first position to the second position. Turning device.   Rotating means provided on the entrance side of the bending turning means (16), and rotating the long material (W) to a posture suitable for bending around an axis extending in the longitudinal direction of the long material (W) ( The long material turning device according to claim 1 or 2, further comprising:

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