JP5048310B2 - Long work reversing device - Google Patents

Description

  The present invention relates to a reversing device for a long workpiece, and in particular, a long mechanism such as a shaped steel can be reversed by an arbitrary angle with a simple mechanism, and the cost of equipment is not increased, and maintenance can be easily performed. Related to the device.

  When manufacturing and processing a long workpiece, for example, a shape steel, it may be necessary to invert the shape steel while being transferred by a conveyor or a roller, or during the processing process.

  Conventionally, a receiving member on which a receiving surface is formed is provided so as to be rotatable or tiltable, and when receiving the shape steel on the receiving surface, the receiving member is rotated or tilted, and the shape steel is rotated or tilted together with the receiving surface. A reversing device for a long workpiece that is reversed is known (Patent Literature 1, Patent Literature 2, Patent Literature 3, Patent Literature 4, Patent Literature 5).

  In addition, a reversing device for a long workpiece in which a shaped block is lifted and reversed by a chain block has been proposed (Patent Document 6).

JP-A-11-310320 JP-A-01-127518 JP-A-55-22414 Japanese Patent Laid-Open No. 51-886528 Japanese Utility Model Publication No. 64-7120 Japanese Unexamined Patent Publication No. 01-52917

  However, the reversing device for long workpieces described in Patent Documents 1 to 6 requires a driving mechanism for rotating or tilting the receiving member or lifting the chain block, the device becomes complicated and large, and the equipment cost is high. Had a problem that it was difficult to maintain.

  In view of such a problem, the present invention is capable of reversing a long workpiece such as a shaped steel by an arbitrary angle with a simple mechanism, and does not increase the cost of equipment, and can be easily maintained. It is an object to provide a work reversing device.

  Accordingly, the reversing apparatus for a long work according to the present invention is a reversing apparatus for a long work that reverses the long work by a predetermined angle around the longitudinal axis thereof. The reversing cam groove is formed on the outer circumferential surface of the reversing roller so as to extend in the circumferential direction, and the reversing cam groove portion at the first rotation position of the reversing roller should be reversed. The reversing cam groove portion at the second rotational position of the reversing roller is a reversal formed by reversing the long work from the initial posture by a predetermined angle around the longitudinal axis. It is formed in a shape that can be held in a posture, and the portion between the first rotation position and the second rotation position of the reversing cam groove rotates the long workpiece gradually from the initial posture to the reversing posture. The at least two reversing rollers have a driving mechanism such that the first rotation position and the second rotation position of each reversing cam groove are in contact with the long workpiece at the same timing. Is configured to be synchronously rotated in the same direction or in the opposite direction.

  One of the features of the present invention is that a reversing cam groove whose shape changes with the rotation of the reversing roller is formed on the outer peripheral surface of the reversing roller, and the long workpiece is reversed by the reversing cam groove.

  As a result, the equipment of the reversing device can be constructed in a smaller and simpler manner than in Patent Documents 1 to 6, so that the cost of the equipment is not increased, and maintenance can be easily performed.

  The reversing device according to the present invention may be provided in the processing step or in the transport line. For example, when it is provided in the conveyance line, it is preferable that a conveyance line for conveying a long workpiece is constituted by a plurality of conveyance rollers, and at least two reversing rollers are arranged between the conveyance rollers.

  When the reversing device is provided in the transport line, it is necessary to lift the long work from the transport roller. Therefore, it is possible to configure such that at least two reversing rollers are moved up and down by an elevating mechanism, and the long workpiece is reversed while being lifted from the conveying roller and then lowered onto the conveying roller.

  Further, instead of using an elevating mechanism, a long workpiece can be lifted and lowered by devising the groove shape of the reverse roller, and in this case, the equipment can be constructed more easily.

  That is, a lifting cam groove deeper than the first rotational position of the reverse cam groove is formed in the reverse rotational direction side portion of the reverse cam groove of the at least two reverse rollers. A long cam that is deeper than the second rotational position of the reverse cam groove is formed in a portion of the reverse cam groove of the reverse roller closer to the rotation direction than the second rotational position, and is conveyed by the conveying roller. Is lifted from the conveyance roller by the lifting cam groove, reversed by the reverse cam groove portion, and lowered onto the conveyance roller by the lifting cam groove portion as the reverse roller rotates. It can also be configured as follows.

  The material of the reverse roller is not particularly limited, and a metal material or a synthetic resin material can be used. The reverse cam groove only needs to be formed on the outer peripheral surface of the reverse roller so as to extend in the circumferential direction, and the length is not particularly limited. For example, it may be formed so as to extend around the entire circumference of the outer peripheral surface or may be formed on a part of the outer peripheral surface.

  The shape of the reversing cam groove is such that the portion at the first rotation position of the reversing roller can receive a long workpiece in the initial position to be reversed, and the portion at the second rotation position of the reversing roller moves the long work from the initial posture to the longitudinal direction. A shape that can be held in an inverted posture that is inverted by a predetermined angle around the axis, so that the portion between the first rotational position and the second rotational position gradually rotates the long workpiece from the initial posture to the inverted posture. It may be formed in a changing shape, and is appropriately selected according to the cross-sectional shape of the long workpiece to be reversed.

  The shape of the lifting cam groove and the lowering cam groove is not particularly limited as long as the long work can be lifted and lowered along with the rotation of the reversing roller. However, in consideration of smooth lifting and lowering, the first and second rotational positions Preferably, the cross-sectional shape is such that the groove is deepened while the cross-sectional shape of the reversing cam groove is maintained.

  The drive mechanism is not particularly limited as long as the reversing roller can be rotationally driven. For example, each of at least two reversing rollers may be provided with a driving mechanism, or one drive provided for at least two reversing rollers. The drive mechanism may be composed of a source and a drive force transmission mechanism that transmits the drive force to each of the at least two reversing rollers.

  Further, according to the present invention, at least two reversing rollers over which the long work is stretched are synchronously rotated in the same direction or in the reverse direction by the drive mechanism, so that the long work is rotated by a predetermined angle around the longitudinal axis. A reversing roller used in a reversing device for a long workpiece to be reversed, wherein a reversing cam groove extends in a circumferential direction on an outer peripheral surface, and the reversing cam groove portion at a first rotational position is in an initial posture. The reversing cam groove at the second rotational position is formed in a shape that can receive a long workpiece, and the reversing cam groove portion in the second rotational position can hold the long workpiece in a reversing posture by reversing a predetermined angle around the longitudinal axis. The portion between the first rotation position and the second rotation position of the reversing cam groove has a shape that changes so as to rotate the long workpiece from the initial posture to the reversing posture. That have been made can be provided a reversing roller of long work characterized by.

  The lifting cam groove and the lowering cam groove can also be formed in the reversing roller of the long workpiece. That is, a lifting cam groove deeper than the reverse cam groove is formed in the reverse rotation direction portion of the reverse cam groove on the outer peripheral surface while rotating more than the second rotation position of the reverse cam groove on the outer peripheral surface. A lowering cam groove deeper than the reversing cam groove is formed in the direction portion, and a long workpiece conveyed by the conveying roller is received by the lifting cam groove portion. By the rotation of the reversing roller, the lifting cam groove portion It can be configured to be lifted from the conveying roller, reversed by the reverse cam groove portion, and lowered onto the conveying roller by the lowering cam groove portion.

  Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 to 6 show a preferred embodiment of a long workpiece reversing device according to the present invention. In the figure, a plurality of transport rollers 12 are arranged on a base 11 at intervals to form a transport line 10, and a hexagonal bar (long work) 50 is transported.

  The conveying line 10 is provided with the reversing device 20 for the long workpiece of this example. The long work reversing device 20 is provided with a plurality of reversing rollers 21, the rotating shaft 21 </ b> A of the reversing roller 21 is rotatably supported by a bearing 21 </ b> B, and the bearing 21 </ b> B is fixed on a lifting plate 22 </ b> A of the elevator 22. A driving source, for example, a geared motor 23 is mounted on the elevating plate 22A, and the driving shaft 23A of the geared motor 23 is connected to the rotating shaft 21A of the reverse roller 21 by a shaft coupling 24. Instead of the geared motor, other drive sources such as a pulse control motor, an air drive actuator, and a hydraulic drive actuator can be used.

  Further, a reversing cam groove 21 </ b> C is formed on the outer peripheral surface of the reversing roller 21 so as to extend along the entire circumference in the circumferential direction. The reverse cam groove 21 </ b> C is formed in a shape that rotates the hexagonal bar 50 to an angle proportional to the rotation angle of the reverse roller 21 as the reverse roller 21 rotates. Specifically, the reversing cam groove 21C is formed in a shape that can receive the hexagonal rod 50 in the initial posture to be reversed at an angle of 0 ° (first rotation position) of the reversing roller 21, and the hexagonal rod 50 is 7 at an angle of 45 °. Rotate 5 °, hex bar 50 rotates 15 ° at angle 90 °, hex bar 50 rotates 22.5 ° at angle 135 °, hex bar 50 rotates 30 ° at angle 180 °, angle 225 ° The hexagonal bar 50 rotates 37.5 °, the angle 270 ° rotates the hexagonal bar 50 °, the angle 315 ° rotates the hexagonal bar 50 52.5 °, and the angle 360 ° (second rotation position). The hexagonal bar 50 is formed in a continuous shape so as to rotate 60 °.

  The combination of the reversing roller 21, the elevator 22, and the geared motor 23 is arranged with a space in which the hexagonal bar 50 can be spanned between the transport rollers 12.

  When the hexagonal bar 50 is transported on the transport line 10 and reaches the position where it is stretched over the two reversing rollers 21, the elevator 22 raises the lift plate 22A. Then, the two reversing rollers 21 controlled to the rotational position in which the angle 0 ° portion of the reversing cam groove 21C is directed upward are lifted, and the hexagonal bar in the initial posture is located at the angle 0 ° portion of the reversing cam groove 21C. 50 (see (a) of FIG. 6) is received.

  Next, the geared motor 23 is driven, and the reverse roller 21 is synchronously rotated in the same direction. Then, the cross-sectional shape of the reversing cam groove 21C continuously changes as shown in FIGS. 6B to 6H with the change of the rotational position of the reversing roller 21, and the hexagonal bar 50 is reversed. As the roller 21 rotates, it is rotated to 7.5 °, 15 °, 22.5 °, 30 °, 37.5 °, 45 °, 52.5 °, and reaches an angle of 360 ° (second rotational position). That is, when the first rotational position is reached, the hexagonal bar 50 is inverted by 60 °.

  In this example, since the two reversing rollers 21 are synchronously rotated in the same direction, the hexagonal bar 50 is fed forward by a distance L as the reversing roller 21 rotates, but the reversing cam grooves 21 </ b> C of the two reversing rollers 21. Are set so that the rotation directions are opposite to each other, and the hexagonal bar 50 is theoretically kept in a stopped state.

  When the hexagonal bar 50 is inverted by 60 ° in this way, the geared motor 23 is stopped, the elevator 22 lowers the elevating plate 22A, and the inverted hexagonal bar 50 is placed on the conveying roller 12 and conveyed by the conveying roller 12. Is done.

  FIG. 7 shows a second embodiment. In the figure, the same reference numerals as those in FIGS. 1 to 6 denote the same or corresponding parts. In this example, one drive source 23 is provided for the two reversing rollers 21, while bevel gears 25 are attached to the rotation shafts 21 </ b> A of the two reversing rollers 21, the bevel gears 25 of the two reversing rollers 21 are connected to the connecting shaft 26 and the bevel gear 25. The connecting shaft 26 is connected to the drive shaft 23 </ b> A of the drive source 23 by the shaft coupling 24.

  FIG. 8 shows a third embodiment. In the figure, the same reference numerals as those in FIGS. 1 to 6 denote the same or corresponding parts. In this example, one drive source 23 is provided for the two reversing rollers 21, while sprockets 27 are attached to the rotation shafts 21 </ b> A of the two reversing rollers 21, and the two sprockets 27 are connected by a roller chain (or timing belt) 28. The rotating shaft 21A of one reversing roller 21 is connected to the driving shaft 23A of the driving source 23 by a shaft coupling 24.

  As described above, the reversing device 20 may be provided with one driving source 23 and a driving force transmission mechanism so that the two reversing rollers 21 are synchronously rotated in the same direction or in opposite directions.

  9 to 11 show a fourth embodiment. In the figure, the same reference numerals as those in FIGS. 1 to 6 denote the same or corresponding parts. In this example, the outer circumferential surface of the reversing roller 21 is formed with a lifting cam groove 21D in which the groove is the deepest at an angle of 0 ° and gradually becomes shallow between the angle of 0 ° and less than 90 °, and the angle 270 A lifting cam groove 21E is formed in which the groove gradually becomes shallow between 360 ° and an angle of 360 °, and the groove becomes the deepest at an angle of 360 °. Between the lifting cam groove 21D and the lifting cam groove 21E A reverse cam groove 21C is formed.

  In this example, the hexagonal bar 50 is transported on the transport line in a state where it is received by a portion of the lifting cam groove 21D at an angle of 0 °. Now, when the drive source 23 is driven and the reversing roller 21 is synchronously rotated in the same direction (or the reverse direction), the reversing roller 21 rotates from the rotation position where the angle 0 ° portion of the lifting cam groove 21D is directed upward. Start to be. Then, as the reversing roller 21 rotates, the hexagonal bar 50 is lifted by the lifting cam groove 21D that gradually becomes shallower as shown in FIGS. 11 (a) to 11 (e). As shown in (m), after being inverted by, for example, 60 ° by the reversing cam groove 21C, as shown in (m) to (q) of FIG. 11, the lowering cam groove 21 gradually becomes deeper. When it is lowered and rotated to the position of 360 ° of the reversing roller 21, the reversed hexagonal bar 50 is conveyed by the conveying line 10.

  Therefore, in this example, it is not necessary to provide the lifting mechanism 22 as in the first embodiment, and the apparatus can be configured more simply.

  12 and 13 show examples of the shape of the long workpiece and the shape of the reverse cam groove to which the present invention can be applied. As shown in FIGS. 7 and 8, the reversing device for a long workpiece according to the present invention includes a hexagonal bar, an elliptical bar, an angle steel, a light angle steel, a grooved steel, an unequal angle iron, a square pipe, a rail, and a square. It can be used for reversing long workpieces such as bars, flat bars, H-shaped steel, I-shaped steel, and T-shaped steel.

  Further, the reversing device for long workpieces according to the present invention is a 60 ° reversal of a hexagonal bar, a 90 ° reversal of an elliptical bar, a 135 ° reversal of angle iron or light angle steel, a grooved steel, an unequal angle iron, and a square pipe. 90 ° reversal and 180 ° reversal, rail 180 ° reversal, square bar 45 ° reversal and 90 ° reversal, flat steel bar 90 ° reversal and 180 ° reversal, H-shaped steel and I-shaped steel 90 ° reversal, T It can be applied to 90 ° reversal and 180 ° reversal of shape steel and unequal angle iron, 90 ° reversal and 180 ° reversal of sheet pile (sheet pile).

It is a side view which shows the conveyance line provided with preferable embodiment of the inversion apparatus of the elongate workpiece | work concerning this invention. It is a top view which shows the said conveyance line. It is a front view which shows the said embodiment. It is sectional drawing which shows the inversion roller in the said embodiment. It is a side view which shows the inversion roller in the said embodiment. It is a figure for demonstrating the inversion operation | movement in the said embodiment. It is a top view which shows the conveyance line provided with 2nd Embodiment. It is a top view which shows the conveyance line provided with 3rd Embodiment. It is sectional drawing which shows the inversion roller in 4th Embodiment. It is a side view which shows the inversion roller in the said embodiment. It is a figure for demonstrating the raising operation | movement, inversion operation | movement, and lowering operation | movement in the said embodiment. It is a figure which shows other embodiment of this invention. It is a figure which shows other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Conveyance line 12 Conveyance roller 20 Inversion device 21 Inversion roller 21A Rotating shaft 21C Inversion cam groove 21D Lifting cam groove 21E Lifting cam groove 22 Lifting mechanism 22A Lifting table 23 Drive source 23A Drive shaft

Claims (3)

In a long work reversing device that reverses a long work around a longitudinal axis thereof by a predetermined angle,
A plurality of conveying rollers (12) constitute a conveying line (10) for conveying the long workpiece (50), and at least two reversing rollers (21) are long between the plurality of conveying rollers (12). spaced apart that can be passed over a scale work, the outer peripheral surface of the reversing roller (21) is formed inverted cam groove (21C) is extending in the circumferential direction,
A portion of the reversing cam groove (21C ) at the first rotation position of the reversing roller (21) is formed in a shape that can receive the long workpiece (50) in the initial posture to be reversed, and the second reversing roller (21) has a second shape. The portion of the reversing cam groove (21C) in the rotational position is formed in a shape that can hold the long workpiece (50) in a reversing posture that is reversed from the initial posture by a predetermined angle around the longitudinal axis. The portion between the first rotation position and the second rotation position of (21C) is formed in a shape that changes so as to gradually rotate the long workpiece (50) from the initial posture toward the reverse posture,
The at least two reversing rollers (21) are driven such that the first rotating position and the second rotating position of each reversing cam groove (21C) are in contact with the long workpiece (50) at the same timing. While configured to be synchronously rotated in opposite directions with respect to adjacent reversing rollers (21) by the mechanism ,
The at least two reversing rollers (21) are moved up and down by a lifting mechanism (22), and after the long work (50) is lifted up from the transporting roller (12), the at least two reversing rollers (21) are lowered onto the transporting roller (12). A reversing device for a long workpiece characterized in that it is configured . The long-work reversing device according to claim 1, wherein the driving mechanism is provided in each of the at least two reversing rollers (21) . And one drive source provided for said drive mechanism said at least two reversing rollers (21), is the driving force is comprised of a driving force transmission mechanism for transmitting to each of said at least two reversing rollers (21) The reversing device for a long workpiece according to claim 1.

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