JP7114083B2 - Work aligning and conveying device and work aligning and conveying method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a workpiece aligning and conveying apparatus and a workpiece aligning and conveying method for aligning bent rod-shaped works such as wiener sausages in a predetermined direction while conveying the bent rod-shaped works.

In general, wiener sausages are obtained by preparing a chain-like stuffing in which unit sausage parts are connected by stuffing raw materials and knotting them at predetermined intervals, boiling this stuffing, and then cutting the stuffing at the knots. is. By the way, because the intestinal casing is made of natural material, and the chain-shaped stuffing is boiled or left to cool while being wrapped around the rod member, most of the cut individual wiener sausages are It is shaped like a bar that is curved in an arc. On the other hand, as a device for conveying wiener sausages, for example, one described in Patent Document 1 below is known. The conveying apparatus described in the above document sorts the non-defective sausages when discharging the cut individual wiener sausages from the chute, and then places the sausages on a conveyer and conveys them in an aligned manner.

JP-A-53-119565

By the way, looking at the conveying apparatus described in the above document, only the wiener sausages in the shape of straight straight rods are discharged from the chute and placed on the conveyor to be aligned. Therefore, when wiener sausages bent in a substantially arc shape are placed on a conveyor and aligned, it is unclear whether the directions of the bends are aligned in the same direction or the directions of the bends are matched. However, at least depending on the structure of this conveying device, it is unimaginable to align the wiener sausages bent in a substantially arc shape in one-sided bending posture. In addition, since it is thought that this conveying apparatus has a relatively complicated mechanical structure, it is difficult to provide it at a low cost because it is likely to be troublesome and costly for maintenance. Such a problem occurs not only in curved wiener sausages but also in general curved rod-shaped workpieces such as metal rods formed in a substantially arc shape.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art. It is an object of the present invention to provide a work aligning and conveying device and a work aligning and conveying method that can be used.

In order to achieve the above object, a work aligning and conveying device according to the present invention is a work aligning and conveying device that conveys a curved rod-shaped work in a substantially arc shape and aligns the curved rod-shaped work in a certain direction. an entry-side conveyor means for placing and conveying a curved bar-shaped work having a portion positioned upstream or downstream in the work-conveying direction from both ends of the arc; Arc center hanging transfer means that supports both ends of the arc and hangs down the arc center of the curved bar-shaped work to transfer it in the work transfer direction, and the arc center of the curved bar-shaped work that is conveyed by the arc center hanging transfer means arc center portion arranging means for arranging the arc center portion of the curved bar-shaped work at either the upstream side in the work conveying direction or the downstream side in the work conveying direction from both arc end portions by lifting the arc center The hanging conveying means is composed of a pair of inclined conveyors which are spaced apart from each other in the work conveying direction and which are inclined downward to the left and right inwards. In addition, it is characterized by an ascending conveyor that is arranged at the downstream end in the work conveying direction of the pair of inclined conveyors and that is inclined upward toward the downstream side in the work conveying direction .

In the above construction, the work conveying speed of the ascending conveyor is set to a speed different from the work conveying speed of the pair of inclined conveyors.

Furthermore, in each of the above configurations, the pair of inclined conveyors is characterized in that the downstream end portions thereof in the work conveying direction are formed substantially horizontally.

In addition, the work aligning and conveying method according to the present invention is a method of aligning the curved rod-shaped works while conveying the substantially arc-shaped bent rod-shaped works in a fixed direction, wherein the arc center portion is more likely than the arc end portions to move in the work conveying direction. A step of placing a curved rod-shaped work arranged upstream or downstream in the work conveying direction and conveying it in the work conveying direction; Using a pair of inclined conveyors, a step of supporting both ends of the arc of the conveyed curved bar-shaped work, and a step of suspending the center of the arc of the bent bar-shaped work supported at both ends of the arc and conveying it in the work transfer direction. , an ascending conveyor that is arranged between a pair of inclined conveyors and at the end of the pair of inclined conveyors on the downstream side in the work conveying direction and is inclined upward toward the downstream side in the work conveying direction. A step of conveying the rod-like workpiece in the workpiece conveying direction while lifting the arc central portion thereof, and a step of arranging the arc central portion of the curved rod-like workpiece at either the upstream side in the workpiece conveying direction or the downstream side in the workpiece conveying direction from both ends of the arc. and

According to the work aligning and conveying apparatus and the work aligning and conveying method according to the present invention, the entry-side conveyor means has a curved rod-shaped work in which the arc center portion is arranged upstream or downstream in the work conveying direction relative to both ends of the arc. is placed and conveyed, and the arc center hanging conveying means supports both arc ends of the bent rod-shaped work conveyed by the entry side conveyor means, and conveys the bent rod-shaped work in the work conveying direction by hanging the arc center part Then, the arc central portion arranging means lifts and conveys the arc central portion of the curved rod-shaped work conveyed by the arc central portion hanging conveying means, so that the arc central portion of the curved rod-shaped work is upstream of the arc both end portions in the work conveying direction. Since it is placed either on the side or on the downstream side in the work transfer direction, while supporting both ends of the arc of the bent rod-shaped work, it is temporarily suspended and conveyed while lifting the center of the arc, which has become substantially vertical, and conveyed in a substantially horizontal position. can be With such an action, it is possible to easily and reliably transfer a plurality of bent bar-shaped works one after another with a simple structure and to align all of them in a fixed orientation.

In addition, since the arc center hanging conveying means is composed of a pair of inclined conveyors spaced left and right in the work conveying direction, and the arc center arrangement means is composed of an ascending conveyor arranged between the pair of inclined conveyors , A simple and inexpensive structure that supports both ends of an arc of a curved rod-shaped work and transports the curved rod-shaped work by hanging the central part of the arc, and a structure that lifts the hanging central part of the arc and directs the curved rod-shaped work in a certain direction. can be provided.

In the case where the work transfer speed of the ascending conveyor is set to a speed different from the work transfer speed of the pair of inclined conveyors, if the work transfer speed of the ascending conveyor is set lower than the work transfer speed of the inclined conveyors, a plurality of curves will occur. All rod-shaped works can be arranged in a posture in which the arc central portion is arranged upstream of the arc end portions in the work conveying direction. Conversely, if the work transfer speed of the ascending conveyor is faster than the work transfer speed of the inclined conveyor, all of the plurality of curved bar-shaped works are placed in a posture in which the arc central portion is located downstream of the arc end portions in the work transfer direction. can be aligned.

Furthermore, in a pair of inclined conveyors in which the downstream ends in the work conveying direction are formed substantially horizontally, the entrance side of the inclined conveyors is inclined left and right inward and the exit side is horizontal. A twisted portion exists in the middle of the conveyor. When both ends of the arc of the bent rod-shaped work are conveyed through this twisted portion, the height of both ends of the arc decreases. As a result, the time required to lift the hanging arc central portion to the height of the descending arc end portions is shortened. In addition, the bent rod-shaped work placed in a horizontal posture by the arc central portion arranging means can be smoothly transferred to a subsequent horizontal roller such as a delivery side conveyor.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic perspective view which shows schematic structure of the workpiece|work alignment conveyance apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the said workpiece|work alignment conveyance apparatus, Comprising: (a) is a top view, (b) is a front view, (c) is a side view. FIG. 4 is a flow chart showing an operation procedure for transporting and aligning a plurality of curved rod-shaped works using the work aligning and transporting device; FIG. 3 is a view taken along the line AA in FIG. 2(a), showing a state in which the work aligning and conveying device conveys and aligns a plurality of bent bar-shaped works in one direction; FIG. 5 is a view showing the state of conveying a curved rod-shaped work by the inclined conveyor of the work aligning and conveying device, where (a) is a view taken along the line BB in FIG. 4, and (b) is a view taken along the line CC in FIG. It is a diagram. FIG. 5 is a schematic perspective view showing a schematic configuration of a work aligning and conveying device according to Embodiment 2 of the present invention; It is a figure which shows the workpiece|work alignment conveyance apparatus which concerns on the said Embodiment 2, Comprising: (a) is a top view, (b) is a front view, (c) is a side view. FIG. 8 is a view taken along line DD in FIG. 7A, showing a state in which the work aligning and conveying device according to the second embodiment conveys a plurality of bent bar-shaped works and aligns them in the direction opposite to the one direction;

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the embodiment described below is merely an example that embodies the present invention, and does not limit the technical scope of the present invention.
Embodiment 1.
Here, FIG. 1 is a schematic perspective view showing the schematic configuration of the work aligning and conveying device according to Embodiment 1 of the present invention, FIG. 2 is a view showing the work aligning and conveying device, (a) is a plan view b) is a front view, and (c) is a side view.
In each figure, the work aligning and conveying device 40 according to the present embodiment transports a plurality of substantially arc-shaped bent bar-shaped works W, W, W, . W1) is a device for aligning. The work aligning and conveying device 40, which will be described individually later, is composed of an entry-side conveyor means 41, an arc-center hanging conveying means 42, an arc-center-arrangement means 43, and an exit-side conveyor means 43. ing.

The entry-side conveyor means 41 includes a drive roller 46A and a driven roller 46B rotating about a horizontal axis, an endless belt-like conveyor 47 wound around the drive roller 46A and the driven roller 46B, and a power transmission mechanism 48. and a motor M1 connected to the drive roller 46A via the drive roller 46A. On the other hand, the delivery-side conveyor means 44 also includes a drive roller 53A and a driven roller 53B that rotate about the horizontal axis, an endless belt-like conveyor 54 that is wound around the drive roller 53A and the driven roller 53B, and a power transmission mechanism. and a motor M4 connected to the driving roller 53A via 48.

The above-mentioned arc center hanging conveying means 42 is interposed between the entrance side conveyor means 41 and the exit side conveyor means 44 . The arc center portion hanging conveying means 42 is composed of a pair of inclined conveyors 45A and 45B extending in the work conveying direction while being spaced apart from each other to the left and right of the work conveying direction. These inclined conveyors 45A and 45B are arranged so as to descend inwardly to the left and right, respectively. 49AB, an endless belt-like conveyor 50A wound around the driving roller 49AA and the driven roller 49AB, and a motor M2 connected to the driving roller 49AA via a power transmission mechanism 48. On the other hand, the inclined conveyor 45B also includes a drive roller 49BA and a driven roller 49BB that rotate about an axis inclined inwardly by an angle θ from the horizontal direction, and an endless belt-like conveyor that is wound around the drive roller 49BA and the driven roller 49BB. 50B and a motor M2 connected to the driving roller 49BA via the power transmission mechanism 48. As shown in FIG. The conveyor 50A and the conveyor 50B are set to the same workpiece transfer speed V1.

The arc central portion arrangement means 43 includes a drive roller 51A and a driven roller 51B that rotate about a horizontal axis, an endless belt-like conveyor 52 that is wound around the drive roller 51A and the driven roller 51B, and a power transmission mechanism 48. and a motor M3 connected to the driving roller 51A via a motor M3. The ascending conveyor 52 is inclined upward in the work conveying direction due to the vertical arrangement of the driving roller 51A and the driven roller 51B. Such an arc central portion arranging means 43 is arranged between the pair of inclined conveyors 45A and 45B, and arranged at the downstream end of the inclined conveyors 45A and 45B in the work conveying direction. In this embodiment, the work transfer speed V2 of the ascending conveyor 52 is set to be slower than the work transfer speed V1 of the pair of inclined conveyors 45A and 45B. Each of the conveyors 47, 50A, 50B, 52, and 54 circulates counterclockwise (in the direction of arrow R) when viewed from the side as shown in FIGS. .

The conveyors 47, 50A, 50B, 52, and 54 described above are composed of, for example, endless circular flat belts made of polyurethane. However, the structure and materials of the conveyor and rollers are not limited to those illustrated above. Further, each of the drive rollers 46A, 49AA, 49AB, 51A, 53A and the driven rollers 46B, 49BA, 49BB, 51B, 53B has left and right bearing side plates (not shown for easy viewing of essential parts) arranged laterally. is rotatably supported on the These rollers are also made of polyacetal, for example.

Subsequently, the operation of the work aligning and conveying device 40 configured as described above will be described mainly using the flow chart of FIG. 3 and the block diagrams of FIGS. 4 and 5, together with FIGS. A plurality of curved rod-shaped works W, W, W, . . . drawn in FIGS. , W, W indicate the change in posture of one bent rod-shaped work W with time.
The procedure of the above operation includes a work placement step S11, an arc both end supporting step S12, an arc central portion hanging step S13, an arc central portion lifting and conveying step S14, a work alignment step S15, and a work placement step S15. and a transfer step S16.

First, in the work placement step S11, the bent rod-shaped work W is placed in a posture in which the arc center WA is positioned upstream or downstream in the work transfer direction (arrow D direction) of the arc ends WB, WB. It is placed on the conveyor 47 of the entry-side conveyor means 41 and conveyed in the work conveying direction. In this case, the curved rod-shaped workpiece W is laid in one direction W1 in which the arc center portion WA of the curved rod-shaped workpiece W is arranged upstream of the arc end portions WB, WB in the workpiece conveying direction (arrow D direction). , the arc center portion WA of the curved rod-shaped work W is arranged downstream of the arc end portions WB, WB in the work conveying direction, and is laid in the reverse direction W2 opposite to the one direction W1 (Fig. 1 , see FIGS. 2(a) and 2(c)).

In the next arc end support step S12, the curved rod-shaped work W (W(1) in FIGS. 4 and 5A) conveyed by the entry-side conveyor means 41 is transferred to the left and right of the arc central portion hanging conveying means 42. are transferred to the inclined conveyors 45A and 45B. At this time, the arc end portions WB, WB of the bent rod-shaped work W are placed on and supported by the inclined conveyors 45A, 45B. Since there is a gap between the inclined conveyors 45A and 45B, the curved rod-shaped work rotates about the supported arc ends WB and WB as the swinging fulcrum immediately after the above-described supporting operation, and the arc central portion WA is rotated. It hangs down in a substantially vertical posture (W(2) in FIGS. 4 and 5A), and is conveyed in the work conveying direction as it is (arc central portion hanging conveying step S13).

In the subsequent step S14 for lifting and conveying the arc center portion, the arc center portion WA of the curved rod-shaped workpiece W supported and conveyed by the arc center portion hanging conveying means 42 comes into contact with the conveyor 52 of the arc center portion placing means 43 (Fig. 4 and W(3) in FIG. 5(b)), the workpiece is lifted by the conveyor 52 as the workpiece is conveyed. However, since the conveying speed V1 of the arc central portion hanging conveying means 42 is set faster than the conveying speed V2 of the arc central portion arranging means 43, the arc central portion WA in contact with the conveyor 50 is faster than the arc both ends WB, WB. With some delay, it rotates counterclockwise in the direction of the arrow G shown in FIG.

In this manner, the plurality of curved bar-shaped works W, W, W, . Work alignment step S15). A plurality of curved rod-shaped works W, W, W, . It is conveyed toward downstream equipment (W(4) in FIGS. 4 and 5(b)).

As described above, according to the work aligning and conveying device 40 of the first embodiment, the arc central portion hanging conveying means 42 supports the arc end portions WB, WB of the curved rod-shaped work W conveyed by the entry side conveyor means 41. At the same time, the arc central portion WA is hung down and conveyed, and the arc central portion arranging means 43 lifts the arc central portion WA of the curved rod-shaped work W so that the arc central portion WA is positioned in the work conveying direction relative to the arc end portions WB, WB. It can be arranged on the upstream side, that is, the curved rod-shaped work W can be placed in a horizontal posture with one direction W1. In this case, since the conveying speed V2 of the ascending conveyor 52 is set slower than the conveying speed V1 of the inclined conveyor 52, all of the plurality of curved bar-shaped works W, W, W, . It is possible to align them in a posture of one direction W1 in which the portion WA is arranged on the upstream side in the work conveying direction with respect to the arc end portions WB, WB. In particular, since the ascending conveyor 52 is used as the means for arranging the central portion of the arc, it is possible to stably and smoothly change the posture of the curved rod-shaped work W (in the direction of the arrow G).

In addition, the structure of the inclined conveyors 45A and 45B of the arc center hanging conveying means 42 that supports the arc ends WB and WB of the bent rod-shaped work W and conveys the arc center WA while hanging down, and the hanging arc center WA The structure of the ascending conveyor 52 of the arc central portion arranging means 43 which lifts up and directs the curved rod-like work W in one direction W1 can be simple and inexpensive.

Embodiment 2.
In the above-described first embodiment, as the arc center hanging conveying means 42, a pair of inclined conveyors 45A and 45B are inclined inward and leftward at the same inclination angle θ from the upstream end to the downstream end in the work conveying direction. was exemplified, but the present invention is not limited thereto. The present invention also includes a work aligning and conveying device 40a having arc center hanging transfer means 42a as shown in FIGS. 6, 7 and 8 instead of the arc center hanging transfer means 42 of the first embodiment. The work aligning and conveying device 40a differs from the work aligning and conveying device 40 according to the first embodiment in that it includes an arc center hanging conveying means 42a composed of a pair of left and right inclined conveyors 45Aa and 45Ba; Contrary to the first embodiment, the conveying speed V2 of the ascending conveyor 52 of the arc central portion arranging means 43 is set to be higher than the conveying speed V1 of the inclined conveyors 45Aa and 45Ba. Other remaining configurations are the same as in the first embodiment.

The inclined conveyors 45Aa and 45Ba of the arc-central hanging conveying means 42a include drive rollers 49AA and 49BA which are inclined from the horizontal so that their axes descend inwardly in the left and right direction, as in the first embodiment. Driven rollers 49ABa, 49BBa arranged so that their axes are horizontal, conveyors 50Aa, 50Ba wound between these rollers, and driving rollers 49AA, 49BA connected via a power transmission mechanism 48 It is composed of motors M2 and M2. That is, the downstream ends 50c, 50c of the respective conveyors 50Aa, 50Ba in the work conveying direction are formed in a horizontal posture. As a result, the conveyors 50A and 50B are twisted in the middle.

In the above-mentioned 40a, as shown in FIG. 8, the arc center portions WB, WB of the curved bar-shaped workpiece W(1) on the entry side conveyor means 41 are transferred onto the arc center portion hanging conveying means 42a, and the arc center portion WA is It hangs down (W(2)), and the arc center WA contacts the ascending conveyor 52 of the arc center placement means 43 (W(3)). At this time, since the conveying speed V2 of the ascending conveyor 52 is faster than the conveying speed V1 of the arc central portion WA at the arc central portion arranging means 42a, the arc central portion WA moves forward more than the arc both end portions WB, WB in a side view. A bent rod-shaped work W rotates as indicated by an arrow Gt. At the same time, the arc center WA is moved from the vertical position to the horizontal position by reducing the supporting height while the arc ends WB are conveyed on the twisted portions of the conveyors 50Aa and 50Ba. It can be done quickly in time.

As described above, according to the work aligning and conveying device 40a of the second embodiment, due to the presence of twisting of the conveyors 50Aa and 50Ba, the arc end portions WB and WB of the curved bar-shaped work W gradually increase in height as they are conveyed. Therefore, the curved rod-shaped works W can contact the conveyor 52 of the arc central portion arrangement means 43 at appropriate positions regardless of their size. Therefore, the alignment can be reliably performed without being affected by the size of the bent rod-shaped work W or uneven warpage. Further, since the downstream end portions 50c, 50c of the pair of inclined conveyors 45Aa, 45Ba are formed horizontally in the work conveying direction, the height of the arc end portions WB, WB at that position is determined by the output side conveyor means. Since the height of the conveyor 54 is adjusted to the height of the conveyor 54 of the outlet side conveyor means 44 , the curved bar-shaped work W placed in a horizontal posture by the arc central portion arranging means 43 can be transferred smoothly onto the conveyor 54 of the delivery side conveyor means 44 . Since the conveying speed V2 of the ascending conveyor 52 is set faster than the conveying speed V1 of the inclined conveyors 45Aa and 45Ba, all of the plurality of curved bar-shaped works W, W, W, . are disposed downstream of the arc ends WB in the work conveying direction, and can be aligned in a posture of W2 opposite to that of the first embodiment. By the way, the present invention also includes the case where the conveying speed V2 of the ascending conveyor 52 and the conveying speed V1 of the arc center portion hanging conveying means 42, 42a are set to be the same speed. In that case, all of the plurality of bent bar-shaped works W, W, W, .

In the first and second embodiments described above, the arc center placement means 43 using the ascending conveyor 52 was exemplified as the arc center placement means, but the present invention is not limited thereto. Instead of the arc central portion arrangement means 43, an obstacle, which is a stationary object, may be fixedly arranged between the inclined conveyors 45A and 45B of the first embodiment or between the inclined conveyors 45Aa and 45Ba of the second embodiment. Even with such an obstacle, it is possible to align the bent bar-shaped works W in a fixed orientation by hitting the arc central portion WA and lifting the arc central portion WA. In this case, if a material having a low coefficient of friction such as a synthetic resin is used as the obstacle, the arc central portion WA can be smoothly lifted and the bent rod-shaped work W can be placed in a horizontal posture.

Moreover, in the first and second embodiments described above, the circular flat belt made of polyurethane rubber was exemplified as the conveyor, but the present invention is not limited thereto. For example, it may have a configuration in which a large number of rubber band-like rubber belts that are wound between the rollers are arranged in the axial direction of the rollers, a resin or metal strip chain, a nylon or carbon fiber woven fabric, or a A knitted fabric or the like is also applicable.
In the above, an example of using a wiener sausage as a curved rod-shaped workpiece having a substantially arc shape is shown, but other than that, for example, food materials curved in an arc shape, curved rods or curved materials made of metal or synthetic resin, etc. is mentioned.

Needless to say, the entry-side conveyor means, the arc-central hanging conveying means, and the arc-central arranging means according to the present invention are not limited to the specific configurations exemplified in the first and second embodiments. In other words, the present invention includes specific configurations other than those of the first and second embodiments as long as they are specific configurations capable of realizing each function of these means.

40, 40a Work aligning and conveying device 41 Entrance side conveyor means 42, 42a Arc center hanging conveying means 43 Arc center arrangement means 45A, 45B Inclined conveyors 45Aa, 45Ba Inclined conveyors 50A, 50B, 50Aa, 50Ba Conveyor 50c Downstream end 52 Ascending conveyor D Arrow S11 Work placement step S12 Arc end supporting step S13 Arc center hanging step S14 Arc center lifting and conveying step S15 Work alignment step V1 Conveyance speed V2 Conveyance speed W Curved rod-shaped work W1 One direction W2 Reverse Direction WA Arc center WB Arc end θ Angle

Claims (4)

A workpiece aligning and conveying device that aligns curved rod-shaped workpieces in a fixed direction while conveying curved rod-shaped workpieces in a substantially arc shape,
entry-side conveyor means for placing and conveying a curved rod-shaped work having an arc central portion positioned upstream in a predetermined work conveying direction or downstream in the work conveying direction with respect to both ends of the arc;
an arc center portion hanging conveying means for supporting both arc ends of the curved rod-shaped work conveyed by the entry-side conveyor means, suspending the arc center portion of the curved rod-shaped work, and conveying the bent rod-shaped work in the work conveying direction;
By lifting the arc center portion of the curved rod-shaped work conveyed by the arc center hanging conveying means, the arc center portion of the curved rod-shaped work is moved to either the upstream side in the work conveying direction or the downstream side in the work conveying direction from both ends of the arc. an arc center locating means for locating one of the
The arc center hanging conveying means is composed of a pair of inclined conveyors which are spaced apart from each other in the work conveying direction and which are inclined inwardly to the left and right, respectively. and between the two inclined conveyors and at the end of the pair of inclined conveyors on the downstream side in the work conveying direction and inclined upward in the work conveying direction downstream side. Characteristic work aligning and conveying device. 2. A work aligning and conveying apparatus according to claim 1 , wherein the work conveying speed of said ascending conveyor is set to a speed different from the work conveying speed of said pair of inclined conveyors. 3. The work aligning and conveying apparatus according to claim 1 , wherein the pair of inclined conveyors are formed such that their respective downstream ends in the work conveying direction are substantially horizontal. A work aligning and conveying method for aligning a substantially arc-shaped bent rod-shaped work while conveying the bent rod-shaped work in a fixed direction,
placing a curved rod-shaped work having an arc central portion positioned upstream or downstream in the work conveying direction relative to both ends of the arc, and conveying the work in the work conveying direction;
a step of supporting both arcuate end portions of the conveyed curved bar-shaped work using a pair of inclined conveyors arranged to be spaced apart in the left and right of the work conveying direction and inclined downward to the left and right inward, respectively ;
a step of suspending the arc central portion of the curved bar-shaped work supported at both ends of the arc and conveying the work in the work conveying direction;
By using an ascending conveyor arranged between the pair of inclined conveyors and at the downstream end portion of the pair of inclined conveyors in the work conveying direction and inclined upward toward the downstream side in the work conveying direction, the a step of conveying the bent rod-shaped work in the work conveying direction while lifting the central portion of the arc of the conveyed rod-shaped work;
disposing the arc center portion of the curved bar-shaped work either upstream in the work conveying direction or downstream in the work conveying direction from both ends of the arc;
A work aligning and conveying method comprising:

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