JPH0812054A - Arrangement member feeding device for rod member - Google Patents

Abstract

PURPOSE:To provide an arrangement member feeding device for a rod member which assortment-arranges the rod member from among a bundle of the rod members having each curved part and supplies the rod members surely one by one to the next process. CONSTITUTION:A rod member is laterally fed, guided by a spiral groove 12 formed on the outer periphery of a feed roll 11, and a levelling roll 21 and a supporting roll 25 are shifted in parallel by the chain belts 33 and 34, and the rod member is combed by a flange 22, and arranged. A V-belt for rotary- driving the levelling roll 21, V-pulley, pressing plate 51 for suppressing the movement of the rod member, rod member position detecting means, and a rod member cutting-out means 62 which is operated by the signal of the position detecting means are provided. The arrangement faculty far the rod member is improved by adjusting the revolution of the feed roll 11 and the parallel shift speed of the levelling roll 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for aligning and feeding hot-rolled metal rods to a straightening machine.

[0002]

2. Description of the Related Art It is usual that a metal rod as hot-rolled has a bend. When supplying rods to a straightening machine to correct the bending of these rods, a bundle of rods is developed on a sorting table and taken out one by one. The bent bar is entangled and it is not easy to take one out of it. In particular, in the case of a bar having a large diameter or a bar having high strength such as a steel bar, the above work becomes more difficult.

[0003]

SUMMARY OF THE INVENTION In view of the above situation, an object of the present invention is to separate and align rods from a bundle of bent rods and to surely carry out one by one to the next step. An object of the present invention is to provide a bar material aligning and feeding device capable of feeding.

[0004]

In order to achieve the above object, an apparatus for aligning and feeding rods according to the present invention comprises: (1) aligning rods received from the previous step, feeding them laterally and feeding them to the next step. It is characterized by comprising the following devices and. A feed roll having a cylindrical roll main body having a spiral groove on the outer periphery and support portions provided at both ends of the roll main body; a first bearing rotatably supporting the support portion of the feed roll; And a feed roll rotating device that rotates and drives the feed roll.

A bar material aligning device provided adjacent to the feed roll, the roll body having flanges arranged at the same intervals as the pitch of the spiral grooves of the feed roll, and a support provided at both ends of the roll body. And a supporting roll having a columnar roll body and supporting portions formed at both ends thereof, and a second bearing for rotatably supporting the leveling roll and the supporting portion of the supporting roll. And a roll translation mechanism that supports the second bearing and translates the leveling roll and the supporting roll in a direction perpendicular to the lateral feed direction of the bar, and the centering axes of the leveling roll and the supporting roll. And a roll rotating mechanism that is driven to rotate around the bar.

A pressing plate provided parallel to the axis of the feed roll, wherein a bar-material receiving side end surface of the pressing plate has a distance at least equal to the width of the spiral groove on the bar-material receiving side of the feed roll. It is provided in excess, and also
The pressing plate provided so that the cutting-side end face of the pressing plate is located on the bar-receiving side edge of the spiral groove at the bar cutting position.

Position detection means for detecting that the bar material laterally fed by the bar material lateral feed device has reached a predetermined position, and a signal issued by the position detection means for operating the bar material. A bar material cutting device, comprising: bar material cutting means for cutting the bar material when it reaches a planned cutting position.

(2) In the bar material aligning and feeding device described in (1), the roll parallel moving mechanism is provided in parallel with two sprocket shafts having sprockets at both ends and engaging with the sprocket. Provided with a pair of chain belts and rotation driving means for rotating the sprocket shaft, and the bearings provided at both ends of the leveling roll and the support roll are supported by the pair of chain belts, respectively. It is characterized by a parallel movement mechanism.

(3) In the bar material aligning and feeding apparatus according to (1), the roll rotating mechanism includes a pulley provided at one end of each of the leveling roll and the support roll, and the pulley. It is characterized in that it is a roll rotating mechanism that is engaged and has a fixed belt provided along the moving direction of the leveling roll and the support roll.

(4) In the bar material aligning and feeding apparatus according to (2), the roll rotating mechanism includes a pulley provided at one end of each of the leveling roll and the support roll, and the pulley. It is characterized in that it is a roll rotating mechanism that is engaged and has a fixed belt provided along the moving direction of the leveling roll and the support roll.

(5) In the bar material aligning and feeding apparatus described in (1) or (4) above, the number of the leveling rolls is 2 or less, preferably 1 of the above, while the feed roll makes one rotation. It is characterized in that the leveling roll moves only once from the bar-rolling start position on the feed roll side of the roll parallel moving mechanism to the end of the bar.

Here, when installing the feed roll, it is preferable that the axis of the feed roll is tilted by an angle equal to the lead angle of the spiral groove of the feed roll with respect to the lateral feed direction of the bar. Further, the height of the flange provided on the leveling roll is preferably 1.5 times or more the diameter of the bar to be aligned.

The direction of rotation of the leveling roll and the support roll by the roll rotating mechanism is such that the rotation of the leveling roll and the support roll is left rotation when the traveling direction of the leveling roll and the support roll is rightward. Preferably.

[0014]

The bar materials that are untied and placed in a pile on the material supply table are sorted by the sorting plate and the conveyor, and are fed laterally to the bar material aligning and feeding apparatus of the present invention. One end of a feed roll provided in the bar material aligning and feeding apparatus of the present invention is provided adjacent to the material feeding table. At this time, the axis of the feed roll is tilted by an angle equal to the lead angle of the spiral groove of the feed roll with respect to the lateral feed direction of the bar. As a result, the direction of the spiral groove coincides with the length direction of the bar material, so that when the bar material is received in the spiral groove of the feed roll, it will be easily received.

The feed roll is supported by bearings at both ends, and is rotated around the central axis by operating the feed roll rotating means. The spiral groove of the feed roll has a function of receiving the bar material by rotating the feed roll, and supporting and guiding the received bar material. By driving the feed roll rotating means to rotate the feed roll about its axis, one end of the bar fed laterally from the feed table is received in the spiral groove of the feed roll. At this time, if a plurality of rods are simultaneously received in the spiral groove, it becomes difficult to align the curved rods. By appropriately selecting the shape and dimensions of the spiral groove, it is possible to prevent a plurality of bars from being simultaneously received in the spiral groove.

The holding plate is parallel to the feed roll and
The distance from the cylindrical surface of the feed roll is smaller than the diameter of the bar to be processed. Further, a holding plate is provided on the rod receiving side of the feed roll so that the end face of the holding plate on the rod receiving side is positioned so that at least a length corresponding to the width of the spiral groove is left. Since the bar material supplied to the feed roll is suppressed by the bar material receiving side end surface of the pressing plate, only the bar material received in the spiral groove during one rotation of the feed roll is accompanied by the rotation of the spiral groove. Can move forward.
The holding plate also has a function of preventing the rod member received in the spiral groove from deviating from the groove portion.

As described above, one rod is successively received in the spiral groove for each rotation of the feed roll. And while supporting one end of the bar material received in the spiral groove in the groove part,
By rotating the feed roll, the supporting end of the bar is laterally fed by one pitch length of the spiral groove for one rotation of the feed roll. The bar aligning device is provided adjacent to the feed roll, and is horizontally traversing by the feed roll by rotating the leveling roll in parallel with the bar transverse direction while rotating around its central axis. It is a device for combing and aligning bars.

The bearing rotatably supports the leveling roll and the support roll. The leveling roll is provided with a plurality of flanges at the same intervals as the pitch of the spiral groove of the feed roll. While rotating the feed roll to laterally feed one end of the bar, the roll parallel moving mechanism is operated to project the flange between the bars, and the leveling roll is translated in the direction of the other end of the bar. For example, curved and intersecting rods are carded by a flange, and the other end of the rods is also fed laterally to align the rods.

At this time, while the feed roll makes one revolution, one leveling roll is moved only once from the position where the bar is started to be drawn to the end of this bar, and the other end of the bar that has crossed is crossed. Also moves one pitch, effectively sticking and aligning the bars. If a large number of flanges intervene between the pair of bar materials to be processed, the downstream flange will prevent bar material combing, so from the start of bar material combing to the end of this bar material during one rotation of the feed roll. The number of moving-in rolls is 2 or less, preferably 1, and the number of moving times is 1.

If the height of the flange is low, the above-described alignment effect is not sufficient. In order to fully exert the alignment effect, the height of the flange is preferably 1.5 times or more the diameter of the bar to be aligned. The supporting rolls are arranged at appropriate intervals between the leveling rolls and have a function of supporting the bar members aligned by the leveling rolls, and assist the effect of the leveling rolls.

When the leveling roll and the supporting roll are moved in parallel to align the bars as described above, the rolls are rotated counterclockwise when the traveling direction of the leveling roll and the supporting roll is rightward. As a result, the resistance force acting on the flange can be reduced when combing a bar material in which the flanges provided on the leveling roll intersect. Also, by making the rotation direction of these rolls as described above,
Thrust in the direction of the feed roll supporting the bar acts on the bar to be treated. This prevents the bar from escaping from the feed roll.

The roll parallel moving mechanism supports the bearing to move the leveling roll and the supporting roll in parallel with the transverse direction of the rod. The following can be used as a preferable aspect of the roll parallel moving mechanism. That is, this roll parallel moving mechanism is provided with two sprocket shafts having sprockets at both ends, a pair of chain belts provided in parallel with each other by engaging with the sprockets, and a rotation driving means for rotationally driving the sprocket shafts. . Bearings for supporting the leveling roll and the support roll are provided outside the two chain belts so that the leveling roll and the support roll are parallel to the sprocket axis. It should be noted that one sprocket shaft is provided adjacent to the feed roll, and the sprocket shaft is provided perpendicularly to the bar material lateral feed direction.

In the roll parallel moving mechanism described above, the rotation driving means is operated to rotate the sprocket shaft and drive the chain belt which engages with the sprocket of the sprocket shaft. As a result, the leveling roll and the support roll are translated in parallel with the lateral feed direction of the bar. The roll rotation mechanism has the function of rotating the leveling roll and the support roll around their axes.

The following can be used as a preferable embodiment of the roll rotating mechanism. That is, a pulley is provided at one end of each of the leveling roll and the support roll, and a belt that engages with the pulley and that is fixed to the base along the moving direction of the leveling roll and the support roll is provided. When the leveling roll and the support roll are rotatably supported by the bearings provided at both ends and are translated, the pulleys engaging with the fixed belt rotate, and the leveling roll and the support roll rotate accordingly. .

When the leveling rolls and the supporting rolls are moved in parallel as described above to align the bars, the rolls are rotated counterclockwise when the traveling direction of the leveling rolls and the supporting rolls is rightward. As a result, the resistance force acting on the flange can be reduced when combing a bar material in which the flanges provided on the leveling roll intersect. Also, by making the rotation direction of these rolls as described above,
Thrust in the direction of the feed roll supporting the bar acts on the bar to be treated. This prevents the bar from escaping from the feed roll.

When the bar fed laterally by the feed roll reaches a predetermined position provided before the cutting position, for example, point K, this is detected by the position detecting means and a signal is emitted. The time required for the bar to reach the cutting position from the point K is calculated based on the signal from the position detecting means, and when the bar has just reached the planned cutting position, the bar traverse device is stopped and the bar cutting means To cut out the bar.

The cut-out side end surface of the holding plate is provided so as to be located on the bar-material receiving side edge of the spiral groove at the bar-material cutting position. Therefore, the point K is a position where the bar is still restrained by the holding plate. As a result, the position detecting means can reliably detect that the bar has reached the point K. After cutting out the bar, the bar traverse device is operated again.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. An aligned feeding device to which the present invention is applied is shown in FIGS. The bar material aligning and feeding device mainly includes a bar material lateral feeding device, a bar material aligning device, and a bar material cutting device.

The bar traverse device is mainly a feed roll 1.
1, a bearing 13 and 14, a feed roll driving motor 15 and a holding plate 51. Feed roll 1
1 has a feed roll body 16 and supporting portions provided at both ends thereof, and the feed roll body 16 has an outer diameter of 200
A cylindrical column having a diameter of 23.5 mm and a semicircular groove 12 having a radius of 23.5 mm are provided in a single spiral shape with a pitch of 150 mm. The bearings 13 and 14 are fitted to support portions provided at both ends of the feed roll body 16 to rotatably support the feed roll 11. The feed roll 11 has a pitch angle of the spiral groove 12 substantially in the lateral feed direction of the bar material 10 (moving the bar material 10 in the direction A in FIG. 1, hereinafter referred to as lateral feed). They are installed at an angle of 15 degrees, which is an equal angle.

The pressing plate 51 is provided 5 mm away from the cylindrical surface of the feed roll body 16. The end surface 52 of the pressing plate 51 on the bar receiving side is the roll body 1 of the feed roll 11.
No. 6 is installed on the rod receiving side of No. 6 by 230 mm, and the end face 53 on the rod cutting-out side of the pressing plate is located immediately above the edge of the spiral groove at the rod cutting-out position P on the rod receiving side. Here, the bar cutting position P is guided to the groove 12 when the groove 12 is on the upper side of the feed roll main body 16 and is 170 mm from the bar cutting side end face 18 of the feed roll main body 16. It is assumed that the bar 10 is located.

The bar aligning device mainly comprises a leveling roll 21, a support roll 25, bearings 23, 24, 26 and 27, a roll parallel moving mechanism and a roll rotating mechanism. The leveling roll 21 has a leveling roll main body and supporting portions provided at both ends thereof. The main body of the leveling roll is a resin cylinder with a diameter of 160 mm, and the outer circumference is 320 mm at intervals of 150 mm on the outer circumference.
A mm flange 22 made of nylon is provided. Bearing 23,
Numeral 24 fits into support portions provided at both ends of the leveling roll body to rotatably support the leveling roll 21.

The support roll 25 has a support roll body and a support portion. The support roll body is a resin cylinder in which a hollow resin ring having a diameter of 160 mm is fitted on the outside of a core rod shaft having a diameter of 45 mm. The bearings 26 and 27 are fitted to support portions provided at both ends of the support roll main body to rotatably support the support roll 25. The roll parallel moving mechanism includes two sprocket shafts 31 and 32 having sprockets at both ends, a pair of chain belts 33 and 34 provided in parallel with each other by engaging with the sprocket, and a rotation driving means (rotation driving means). (Not shown in the figure).

The bearings 23 and 26 are attached to the chain belt 33,
In addition, the bearings 24 and 27 are supported by the chain belts 34, respectively, outside the chain belts 33 and 34, and
The leveling roll 21, which is parallel to the sprocket shafts 31 and 32,
A support roll 25 is provided. At this time, the chain belt 3
Three leveling rolls 21 are provided at equal intervals on the outside of 3, 34, and three support rolls 25 are provided between each leveling roll 21.

The roll rotating mechanism engages with the V pulley 41 provided at one end of the leveling roll 21, the V pulley 42 provided at one end of the support roll 25, and the upper surfaces of the V pulleys 41, 42,
Further, the V-belt 43 and the V-belt 43 are provided linearly along the moving direction of the leveling roll 21 and the support roll 25.
The reinforcing member 44 for lining and the one end of the reinforcing member 44 are fixed to the base 45, and the other end includes a supporting member 46 for supporting the reinforcing member 44 for lining the V-belt 43.

The bar cutting device mainly comprises a position detecting means 61 and a bar cutting means 62. The position detecting means 61 is provided below the position K, which is closer to the bar receiving side by 170 mm than the bar cutting position P. The bar cutting-out means 62 is provided near the bar cutting-out position P of the feed roll 11. Next, the operation of the embodiment will be described.

A bar material 10 of hot-rolled steel having a diameter of 55 mm and a length of 6 m is unwound and placed on the material supply table 1. The stack of bars 10 is sorted by the sorting plate 2 that moves up and down,
The bar material 10 is laterally fed by the conveyor 3 and supplied to the alignment material supply device for the bar material 10 of the present invention. One end of the bar 10 to be supplied is on the feed roll 11 and is restrained by the bar receiving side end surface 52 of the pressing plate 51. The feed roll 11 is rotationally driven by the operation of the feed roll driving motor 15. With the rotation of the feed roll 11, the groove 12 rotationally moves to reach the upper surface of the feed roll 11, and the rod 10 is taken in.

At this time, by providing the feed roll 11 by inclining the central axis of the feed roll 11 with respect to the A direction by the pitch angle of the groove 12, the length directions of the groove 12 and the bar material 10 are aligned, and the groove 12 is formed. It is easy to accept the bar material. Due to the restraining action of the holding plate 51, only one bar 10 is received in one pitch length of the groove 12. Feed roll 11
The rod 10 received in the groove 12 with the rotation of the
Is guided and is fed laterally.

A bar material 1 which has been laterally fed by a bar material lateral feeding device.
Align 0 with the bar aligner. The bar alignment device
The leveling roll 21 and the support roll 25 are rotated and moved by the roll parallel moving mechanism and the roll rotating mechanism, and the bar material 10 laterally fed by the feed roll 11 is carded and aligned.

The sprocket shaft 31 is operated by operating a rotary drive means (not shown) while operating the bar transverse device.
Is driven to rotate the chain belts 33 and 34, and the leveling roll 21 and the support roll 25 that are supported by the chain belts 33 and 34 in parallel with the A direction are
Move in the direction perpendicular to the direction. At this time, while the feed roll 11 makes one rotation, one leveling roll 21 moves from the carding start position (position where the flange 22 starts to intervene between the bar members 10) to the end of the bar member 10. .
As a result, one and at most two flanges 22 are interposed between each bar 10 being guided by the feed roll 11 and being laterally fed. This is particularly important when the bar 10 to be processed is a large-diameter, high-strength material as in this embodiment, and the flange 22 interposed between the bar 10 is used.
If the number of rods is large, it will hinder the bar alignment, and if the feed roll 11 is moved many times while the feed roll 11 makes one revolution, the flange 22 cannot properly intervene between the rods 10 and the flange 22 cannot be inserted. It becomes damaged and the bars 10 cannot be aligned.

The roll rotating mechanism is engaged with the V pulley 41 provided at one end of the leveling roll 21, the V pulley 42 provided at one end of the support roll 25, and the upper surfaces of the V pulleys 41, 42.
Further, the V-belt 4 provided linearly in the direction perpendicular to the A direction
3, a reinforcing member 44 for lining the V-belt 43 and one end fixed to the base 45, and the other end of the supporting member 46 for supporting the reinforcing member 44 lining the V-belt 43.

The operation of the roll rotating mechanism is as follows. When the leveling roll 21 and the support roll 25 are translated by the roll translation mechanism, the V pulley 41,
42 engages with the V-belt 43, and the frictional force between them causes the V-pulleys 41 and 42 to rotate, so that the leveling roll 21 and the support roll 25 rotate. Reinforcing material 44 is V
The belt 43 is lined and reinforced. The support member 46 has an elastic action, and while supporting the reinforcing member 44 lining the V-belt 43, presses the V-belt 43 against the V-pulleys 41 and 42 to generate a frictional force between the V-belt 43 and the V-pulleys 41 and 42. The rotational force of the leveling roll 21 and the support roll 25 is increased.

When the leveling roll 21 and the supporting roll 25 are moved in parallel as described above to align the bar members 10, when the traveling direction of the leveling roll 21 and the supporting roll 25 is, for example, the right direction, the leveling roll 21 and the support roll 25 are rotated counterclockwise. This makes the break-in roll 2
It is possible to reduce the resistance force that acts on the flange 22 when the bar 10 with which the flange 22 provided on the first crosses is combed. Further, by setting the rotation directions of the leveling roll 21 and the support roll 25 as described above, the bar material 10 to be processed is obtained.
A thrust force in the direction of the feed roll 11 that supports the bar 10 is applied to. This prevents the rod 10 from escaping from the feed roll 11.

The rods that are being fed by the rod feed device while being aligned by the rod aligning device eventually reach the rod cutting position P. The end surface 53 of the pressing plate 51 on the bar material cutting side is located immediately above the edge of the spiral groove 12 at the bar material cutting position P on the bar material receiving side.
At the position K closer to the 0 mm rod receiving side, the rod 10 is restrained by the pressing plate 51. Therefore, the bar 10 at the position K can be reliably detected by the position detecting means 61.

This is particularly important when the bar 10 to be processed is a large-diameter, high-strength material. When the position of the bar 10 is detected at a free position, for example, the bar cutting position P, the bar 10 has a groove 12 in the case of a bent large diameter and high strength material.
Therefore, the position detection of the bar 10 becomes unstable. When the position detecting means 61 detects that the bar 10 is present at the position K, it outputs a signal. This signal causes position K
The time T for the bar 10 to reach the position P is calculated, and after the time T from the time the bar 10 is at the position K, the bar traverse device and the bar aligner are stopped, and the bar cutting means. 62 is operated to cut out the bar 10.

When the cutting of the bar 10 is completed, the bar traverse device and the bar aligning device are operated again.

[0046]

As described above, according to the rod material aligning and feeding apparatus of the present invention, the strength is high like a steel rod, and
It is possible to provide a bar material aligning and feeding device that can separate and align even a bar material having a large diameter and a bend and reliably supply the bar material one by one to the next step.

[Brief description of drawings]

FIG. 1 is a plan view showing an outline of an embodiment.

FIG. 2 is a front view showing an outline of an embodiment.

FIG. 3 is a schematic diagram showing a feed roll unit of the embodiment.

FIG. 4 is a schematic view showing a roll rotating mechanism and a bar material cutting device according to an embodiment.

[Explanation of symbols]

 1 Feeding Table 2 Sorting Plate 3 Conveyor 10 Bar Material 11 Feed Roll 12 Grooves 13, 14 Bearing 15 Feed Roll Drive Motor 16 Feed Roll Main Body 17 Bar Material Cutting Side End Face 21 Leveling Roll 22 Flange 23, 24 Bearing 25 Support Roll 26, 27 Bearings 31, 32 Sprocket shaft 33, 34 Chain belt 41, 42 V pulley 43 V belt 44 Reinforcing material 45 Base stand 46 Supporting member 51 Holding plate 52 Bar material receiving side end surface 53 Bar material cutting side end surface 61 Position detecting means 62 bar cutting means

Claims (5)

[Claims] 1. A bar material aligning and feeding device comprising the following devices for aligning and laterally feeding the bar materials received from the previous process and feeding them to the next process: A spiral shape on the outer periphery. A feed roll having a columnar roll main body having grooves and supporting portions provided at both ends of the roll main body, and a first supporting the support portion of the feed roll rotatably.
And a feed roll rotating means for rotating the feed roll. A bar aligning device provided adjacent to the feed roll, comprising a roll main body having flanges arranged at the same intervals as the pitch of the spiral grooves of the feed roll, and support portions provided at both ends of the roll main body. A leveling roll having, a supporting roll having a columnar roll body and supporting parts formed at both ends thereof, a second bearing rotatably supporting the leveling roll and the supporting part of the supporting roll, A roll translation mechanism that supports a second bearing and translates the leveling roll and the supporting roll in a direction perpendicular to the lateral feed direction of the bar, and the leveling roll and the supporting roll around the respective central axes. A bar material aligning device comprising: a roll rotating mechanism that is rotationally driven. A pressing plate provided parallel to the axis of the feed roll, wherein a bar-material receiving side end surface of the pressing plate is provided on the bar-material receiving side of the feed roll with a distance at least equal to the width of the spiral groove. The pressing plate is provided so that the cutting-side end surface of the pressing plate is located on the bar receiving side edge of the spiral groove at the bar cutting position. Position detection means for detecting that the bar material laterally fed by the bar material lateral feed device has reached a predetermined position, and a signal issued by the position detection means to operate, and the bar material is expected to be cut out. And a bar cutting device that cuts the bar when the temperature reaches the bar. 2. The roll parallel moving mechanism includes two sprocket shafts having sprockets at both ends, a pair of chain belts provided in parallel with each other by engaging with the sprocket, and a rotation driving to drive the sprocket shafts. 2. A rod parallel moving mechanism comprising a driving means and supporting bearings provided at both ends of the leveling roll and the supporting roll by the pair of chain belts, respectively. Alignment material supply device for materials. 3. The roll rotating mechanism engages with a pulley provided at one end of each of the leveling roll and the supporting roll, and engages with the pulley, and moves the leveling roll and the supporting roll. 2. The bar material aligning and feeding device according to claim 1, which is a roll rotating mechanism having a fixed belt provided along the direction. 4. The roll rotating mechanism engages with a pulley provided at one end of each of the leveling roll and the support roll, and engages with the pulley, and moves the leveling roll and the support roll. 3. The bar material aligning and feeding device according to claim 2, which is a roll rotating mechanism having a fixed belt provided along the direction. 5. While the feed roll makes one revolution,
The number of the leveling rolls is two or less, and preferably one leveling roll moves only once from the bar-rolling start position on the feed roll side of the roll parallel moving mechanism to the end of the bar. The bar material aligning and feeding device according to claim 1 or 4.