JP2000264436A - Direction-change device for carried material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a direction-change device for a carried material heading the direction of the carried material toward a desired direction in changing the direction and feeding it to the downstream side carrier passage. SOLUTION: When a bottom prescribed part of a carried material H changed the direction by direction-change means 8 and fed to an entrance of a sub carrier passage B is brought in contact with a rotation drive part 4a, either side of a tip F side or a rear end R side of the carried material H is drawn into the sub carrier passage B quicker than the other side. Therefore, the carried material H enters into the sub carrier passage B while rotating adjacent to the entrance of the sub carrier passage B and changing the direction so that the carried material H can be carried with its direction header for the desired discretion in the carrier passage in the downstream side, such as holding the direction of the carried material H carried so far, changing the direction toward the advancing direction, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for changing the direction of a conveyed product which is used, for example, at a distribution center or the like to sort or change the direction of articles or the like by destination.

[0002]

2. Description of the Related Art Conventionally, various types of direction change devices for changing the direction of the course of a conveyed article have been developed in an automatic conveying apparatus for automatically conveying a conveyed article using a roller conveyor, a belt conveyor or the like. Among them, as a direction changing device for changing the course of the conveyed article by approximately 90 degrees, there is, for example, one disclosed in Japanese Patent Application Laid-Open No. 4-112124.

[0003]

However, in the apparatus described in the above publication, a conveyed object is reciprocated by a diverter rotatably supported at one end by an end of the conveying path, so that the conveyed object is moved to the sub conveying path. When the direction of the conveyed object is changed by the device that sends out the conveyed object, the direction of the conveyed object when it is sent out into the downstream conveying path may vary. If the direction of the conveyed object varies as described above, there is a problem that it is difficult to take out or sort the conveyed object on the downstream side of the sub-conveyance path.

The present invention has been made in view of such a problem, and the direction of a conveyed object that can be sent to a downstream conveying path in a desired direction during the direction change. It is an object to provide a conversion device.

[0005]

In order to solve the above-mentioned problems, a device for changing the direction of a conveyed object according to the present invention is provided. A direction changing device for changing the direction of the conveyed article, wherein at a downstream side of the direction changing means, at an entrance of a sub-transport path provided so as to be substantially orthogonal to a longitudinal direction of the conveyance path, A rotary drive unit is provided that acts to pull in the article toward the downstream side of the sub-transport path, and at least a peripheral speed of a contact portion of the rotary drive unit with the article is a width at an entrance of the sub-transport path. It is characterized in that it is different at the left and right ends of the direction. According to this feature, when a predetermined portion of the lower surface of the conveyed object, which has been changed in direction by the direction changing means and sent out to the entrance of the sub-conveyance path, comes into contact with the rotary drive unit, either the front end side or the rear end side of the conveyed object is used. One side is drawn into the sub-conveying path faster than the other side. Therefore, the conveyed material enters the sub-transport path while turning and changing its direction near the entrance of the sub-transport path, and the direction of the conveyed article is changed while maintaining the direction of the conveyed substance. For example, the transport object can be transported in a downstream transport path in a desired direction.

In the apparatus for changing the direction of a transported object according to the present invention, the rotary drive unit is a cylindrical drive roller that is driven to rotate about an axis that is substantially perpendicular to the longitudinal direction of the sub-transport path. It is preferable that the upper part of the peripheral surface of the roller is provided so as to be inclined downward from one end side to the other end side. By doing so, only the upper peripheral surface of the inclined drive roller is brought into contact with the lower surface of the conveyed object, so that the direction of the conveyed object is reliably converted.

In the apparatus for changing the direction of a conveyed product according to the present invention, the rotary drive unit is a cylindrical drive roller that is driven to rotate about an axis that is substantially perpendicular to the longitudinal direction of the sub-transport path. The roller is preferably formed in a tapered shape that tapers from one end to the other end. By doing so, the peripheral speed of the drive roller at both ends in the axial direction is different, and the conveyed material that contacts the peripheral surface of the drive roller is turned by this speed ratio.

In the direction changing apparatus for conveyed articles of the present invention, it is preferable that the upper part of the peripheral surface of the cylindrical driving roller is provided so as to be substantially parallel to the conveying path surface. With this configuration, the conveyed object can be turned without inclining at the time of contact with the drive roller.

In the apparatus for changing the direction of a conveyed object of the present invention, a turn roller whose peripheral surface can contact the side surface of the conveyed object is provided at one of the left and right ends in the width direction near the entrance of the sub-conveying path. Is preferred. With this configuration, when the conveyed object comes into contact with the turn roller at the time of turning, the conveyed object is turned around the turn roller, so that the direction of the conveyed object can be changed compactly and quickly. Further, it is possible to prevent the transported object from dropping from the transport path when changing the direction.

According to the present invention, there is provided an apparatus for changing the direction of a conveyed object, wherein the direction changing means rotates substantially around a tilted axis which is inclined at a predetermined angle with respect to an axis perpendicular to a conveying path surface of the conveyed object. It preferably comprises In this way, when the transported object transported in the upstream transport path reaches the inclined roller, the inclined roller is rotated by the inertial force of the transported object. Is gradually moved along the vicinity of the outer peripheral portion of the inclined roller while riding on the inclined roller in a state of being in contact with the vicinity of the outer peripheral portion of the upper surface. In this way, the conveyed object is smoothly changed in the direction of rotation of the inclined roller without any significant loss of inertial force in the conveying direction, and is converted to a desired direction via the driving roller, and is conveyed in the sub-conveying path. Will be sent to Therefore, it is possible to quickly change the direction of the conveyed object without stopping or decelerating at the direction changing unit or the branching unit.

[0011] In the apparatus for changing the direction of a conveyed object of the present invention, it is preferable that the inclined shaft of the inclined roller is rotatably provided around an axis perpendicular to a conveying path surface of the conveyed object.
By doing so, the conveyed object can be selectively changed in multiple directions only by changing the direction of the inclined roller.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. First, FIG. 1 shows a main part of a transfer apparatus 1 as an embodiment of the present invention. A main transport path B extending in the left-right direction indicates a branch transport path extending in a direction orthogonal to the transport direction of the main transport path A.

Between the guide rails 2 forming the left and right side surfaces of the main transfer path A, a rotatable shaft 3 is provided around a support shaft 3 which is directed in the left and right direction with respect to the transfer direction (arrow direction in the figure) of the load. The plurality of rollers 4 are disposed at predetermined intervals in the longitudinal direction of the main transport path A. As shown in FIG. 2, a drive shaft 13 connected to a drive motor (not shown) is provided below the rollers 4 so as to extend in the longitudinal direction of the main transport path A. A plurality of pulleys 15 are provided on the drive shaft 13 so as to correspond below the rollers 4. A belt 14 is wound around each of the rollers 4 and a pulley 15 therebelow. Each of the rollers 4 is rotated by driving the drive shaft 13 around the axis by driving of the drive motor (not shown).
A conveying force is applied to the conveyed object on the roller 4.

Between the guide rails 2 'and 2' forming the left and right side surfaces of the branch conveyance path B, cylindrical rollers 4a, 4b,
4c are provided at predetermined intervals in the longitudinal direction of the branch conveyance path B. Among them, the roller 4a as a rotation drive unit on the upstream side, that is, near the main transport path A is orthogonal to the longitudinal direction in the branch transport path B as shown in FIG. As shown, it is rotatably provided around a support shaft 3 ′ inclined downward toward the downstream side of the main transport path A. This roller 4a
A roller 4b that rotates around a horizontal support shaft 3 'orthogonal to the longitudinal direction of the branch conveyance path B is provided on the downstream side, and the left and right ends are further branched on the downstream side. A plurality of rollers 4c rotating around a horizontal support shaft 3 'inclined in the longitudinal direction of the transport path B are provided.

These rollers 4a, 4b, 4c are connected to a pulley (not shown) of a drive shaft 13 'provided below by a belt 1
The drive shaft 13 ′ is connected via a drive shaft 4 ′, and is rotated by driving the drive shaft 13 ′. Although not shown, a horizontal roller 4 orthogonal to the longitudinal direction of the branch conveyance path B is provided downstream of the roller. On the upper surface of the guide rail 2 ′ located on the downstream side of the main transport path A, a turn roller 11 fixed non-rotatably around the vertical axis 11 a is provided near the guide rail 2 of the main transport path A. .

At the upstream position in the branching section 9 in the main transport path A, the transported material transported from the upstream side of the main transport path A is moved to either the downstream side of the main transport path A or the branch transport path B. Is provided with a direction changing roller 8 which can be selectively fed. This direction changing roller 8 is
In particular, as shown in FIG. 2, a vertical axis 16 perpendicular to the transport path surface 19 of the transported article formed by the upper surface of the roller 4.
b, and a shaft member 16 composed of an inclined shaft 16a whose upper part is inclined at a predetermined angle α with respect to the vertical axis 16b,
6a, receiving member 1 that expands upward in a tapered shape at the upper end
And a tilt roller 18 rotatably mounted on the tilt shaft 16a around the axis of the tilt shaft 16a.

The lower end of the vertical shaft 16b is rotatably inserted around a central axis into a substrate 22 which is laid between the two guide rails 2 and 2 so that the substrate 22 is sandwiched therebetween. The horizontal plate 2 of the substantially L-shaped support plate 20 supported by the attached upper and lower flange portions 21 so as to be immovable in the vertical direction and having a substantially central portion in the vertical direction standing on the substrate 22.
0a, and is rotatably supported around an axis. Above the upper flange portion 21 of the vertical shaft 16b, a guide member 24 is provided upright at a predetermined position on the substrate 22 so as to be slidable in the left-right direction with respect to the longitudinal direction of the main transport path A. The pinion 23 meshing with the linear rack 25 is fixed.

As shown in FIG. 3, a drive motor 26 is provided at one longitudinal end of the rack 25, and a speed reducer 27 is connected to the drive motor 26. A drive pinion 29 fixed to a drive shaft 28 protruding from the upper end of the reduction gear 27 is meshed with the rack 25, and by driving the drive motor 26,
5 is moved in the left-right direction. That is, by the movement of the rack 25, the vertical shaft 16b is rotated around the axis, and the directions of the inclined shaft 16a and the inclined roller 18 are switched as shown by a three-dot chain line in the figure.

The drive motor 26 is connected to a control device provided at an appropriate place, and can be driven at a desired place. The drive motor 26 has a rotary encoder (not shown) for measuring the number of rotations of the drive shaft and the like.
Are provided inside, so that the direction and the switching angle of the inclined roller 18 can be controlled.

Further, the gear portion of the rack 25 and the pinion 2
A guide roller 31 for urging the rack 25 in the direction of the pinion 23 is provided on a vertical surface of a support plate 40 erected on the substrate 22 so that the gear portion of the drive pinion 29 and the gear portion of the drive pinion 29 are reliably engaged with each other. 30 are provided.

A plurality of direction changing rollers 8 in this embodiment having the above-described configuration are provided in the width direction of the main transport path A.
As shown in FIG. 4, it is set so as to be slightly higher than the transport path surface 19 formed by the upper portion of the roller 4.

Then, by appropriately driving the drive motor 26 to move the rack 25 in the left-right direction, FIG.
As shown in FIG. 5B, the inclined roller 18 has a position where the opening angle of the inclined shaft 16a with respect to the entry direction of the conveyed object (open arrow in the drawing) is θ = 45 degrees, and as shown in FIG. The rotation about the axis of the vertical axis 16b is performed between a position where the opening angle of the inclined axis 16a with respect to the entering direction of the conveyed object is θ = 90 degrees. Note that the height position near the upper portion of the inclined roller 18 does not change when the inclined roller 18 rotates.

As shown in FIGS. 1 and 2, a plurality of support rollers 10 are provided on the downstream side of the direction changing roller 8 so as to be rotatable about a vertical axis on the substrate 22 '. A plurality of these support rollers 10 are provided in the width direction of the main transport path A and in the longitudinal direction of the main transport path A.
It is set so as to be located above a predetermined height.

Next, the operation when the direction of the transported object is changed will be described with reference to the drawings. First, the opening angle θ of the inclined shaft 16a with respect to the entering direction of the transported object is as shown in FIG. Is set to θ = 45 degrees, when the transported material transported from the upstream side by the rollers 4 reaches the branching section 9 as shown in FIG.
Near the outer peripheral portion of the upper surface 18a of the inclined roller 18,
That is, it comes into contact with the vicinity of the point P1 in FIGS. 4 and 5A.

The inclined roller 18 is rotated by receiving the inertial force of the conveyed object H, and the conveyed object H moves from the position near P1 along the position indicated by the oblique line in FIG.
8, the leading end F side of the conveyed object H is gradually changed in the tangential direction of the inclined roller 18 as shown in FIG. 7.

At a position near the uppermost portion P2 of the inclined roller 18, the conveyed article H is sent out in the tangential direction of the inclined roller 18 by receiving the rotational force of the inclined roller 18. That is, the transported object H is changed in the right direction with respect to the longitudinal direction of the main transport path A, and is sent out in the branch transport path B direction. The transported material H moved to the downstream side of the inclined roller 18 is supported by the support roller 10 rotated in the moving direction of the transported material by contact with the lower surface of the transported material H whose direction has been changed. Move into B.

The transported object H whose course has been changed by the direction changing roller 8 while changing its direction in the changing direction, enters the branch conveying path B at the front end F side before the rear end R side. Then, when the rear end R enters the branch conveyance path B, FIG.
As shown in FIG.
a, and is drawn into the branch conveyance path B by the rotational force of the roller 4a.

As described above, the speed at which the conveyed material H is drawn into the branch conveyance path B on the left and right sides near the entrance of the branch conveyance path B, that is, the peripheral speed of the rollers 4a, is different. Changes. Therefore, the transported object H transported in the main transport path A is transported in the branch transport path B without changing its direction with the front end F directed downstream of the main transport path A. Can be done.

When the conveyed article H enters the branch conveyance path B, even if the conveyed article H tends to deviate downstream due to the inertial force in the downstream direction of the main conveyance path A, the conveyed article H is H contacts the turn roller 11 and is held in the branch conveyance path B. When the leading end F of the conveyed object H contacts the turn roller 11, the drawing speed of the leading end F toward the branch conveyance path B is reduced. However, since the rear end R side of the conveyed object H rotates around the turn roller 11, the conveyed object H is turned compactly.

Further, the inclined roller 18 is used as the direction changing means.
Is used, the conveyed object H is gradually changed in the direction of rotation of the inclined roller by the inclined roller 18 which rotates by receiving the inertial force.
In contact with the object, the inertia force of the object H is greatly lost, and the object H does not suddenly stall.

Further, the conveyed material whose direction has been changed by the rotation of the inclined roller 18 is sent out in the tangential direction by using the rotational force of the inclined roller 18. In addition, it is possible to convert the object H in a desired direction quickly and continuously smoothly without stopping.

The inclination shaft 16 of the direction changing roller 8 is
Since the inclination angle α with respect to the vertical axis 16b and the opening angle θ with respect to the entry direction of the conveyed object can be arbitrarily changed, the rack 25 is moved to the left and right via the drive motor 26, as shown in FIG. As shown, the open angle θ
Is set to 90 degrees (or -90 degrees), it is possible to convey the article H to be conveyed in the main conveyance path A to the downstream side of the main conveyance path A without changing the conveyance direction. Also, for example, as shown in FIG. 5C, if the opening angle θ is -45 degrees, that is, if the branch conveyance path is provided toward the opposite side to FIG. It is also possible to change the direction.

As shown in FIG. 6 (b), as a method of pulling the rear end R side of the conveyed object H into the branch conveyance path B with priority over the front end F side at the entrance of the branch conveyance path B, for example, as shown in FIG. , The diameter of the tapered roller 4 is tapered from the upstream side to the downstream side of the main transport path A (L1> L2).
a 'is considered. Furthermore, this tapered roller 4a '
6 (c), the upper part of the peripheral surface may be provided substantially horizontally with respect to the transport path surface 19, as shown in FIG.

In the case of the roller 4a 'having a tapered shape as shown in FIG. 6B, since the diameters of the right and left ends of the roller 4a' are different from each other, the peripheral speed of the left side having a large diameter becomes faster than that of the right side. If the peripheral speeds at the left and right end portions of the peripheral side surface of the roller 4a 'are different as described above, even when the lower surface of the transport object H contacts the entire upper peripheral surface of the roller 4a', the transport object H
Turns. Further, if the upper part of the peripheral surface is held substantially horizontally with respect to the transport road surface 19 as shown in FIG. 6C, the transported object H can be smoothly turned without tilting.

FIGS. 8A and 9 show a second embodiment of the present invention. This embodiment is different from the above-described embodiment in that the rollers 4 provided at the entrance of the branch conveyance path B
The support shaft 3 ′ a (rotation axis) is provided so as to incline upward from the upstream side of the main transport path A toward the downstream side, and the turn roller 11 is connected to the upstream side of the main transport path A. Is provided on the guide rail 2 ′ located at the position (1). Other configurations are the same as those of the above-described embodiment, and the same reference numerals are given, and the detailed description is omitted here.

Next, the operation of the present embodiment at the time of changing the direction of the conveyed object H will be described with reference to FIGS. 8A and 9. The object H enters the branch conveyance path B before the front end F side than the rear end R side. The operation of the direction changing roller 8 is the same as that of the above-described embodiment, and the description thereof will be omitted. Here, as shown in FIG. 8A, the front end F of the conveyed object H is brought into contact with the upper side of the roller 4a, and the conveyed object H is quickly drawn into the branch conveying path B by the rotation of the roller 4a.

As described above, since the speed at which the conveyed material H is drawn into the branch conveyance path B, that is, the peripheral speed of the roller 4a, is different on the left and right sides near the entrance of the branch conveyance path B, the conveyed object H turns and turns. Changes. Therefore, the front end F of the conveyed object H, which has been conveyed in the main conveyance path A, can be conveyed in the branch conveyance path B with the front end F downstream of the branch conveyance path B.

When the turn roller 11 comes into contact with the inner surface of the conveyed object H when the conveyed object H enters the branch conveying path B, the drawing speed of the inner surface of the conveyed object H is reduced. Since the outside of the conveyed object H rotates around the turn roller 11, the conveyed object H turns compactly. In this way, the conveyed object H can be conveyed without changing its direction when changing the course.

As a method of changing the direction of the conveyed material H at the entrance of the branch conveyance path B and sending it out to the branch conveyance path B side, for example, as shown in FIG. A tapered roller 4a 'that tapers from the downstream side toward the upstream side (L1 <L2) is conceivable.
Further, as shown in FIG. 8C, the tapered roller 4a 'may be provided such that the upper peripheral surface thereof is held substantially horizontally with respect to the transport path surface 19.

In the case of the tapered roller 4a 'as shown in FIG. 8B, since the diameters of the right and left ends of the roller 4a' are different from each other, the peripheral speed of the right side having a large diameter becomes faster than that of the left side. If the peripheral speeds at the left and right end portions of the peripheral side surface of the roller 4a 'are different as described above, even when the lower surface of the transport object H contacts the entire upper peripheral surface of the roller 4a', the transport object H
Turns. Further, if the upper portion of the peripheral surface is held substantially horizontal with respect to the transport path surface 19 as shown in FIG. 8C, the transported object H can be smoothly turned without tilting.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention. Included in the invention.

In these embodiments, the conveyed material H, which has been conveyed on the main conveyance path A, by the direction changing roller provided at the branch portion, is downstream of the main conveyance path A or downstream of the branch conveyance path B. An example in which sorting is selectively performed is shown. For example, a direction changing roller is provided at a bent portion (direction changing portion) of a main conveyance path A formed in a substantially L shape, and a conveyed object is formed. It is also conceivable to use it to turn around 90 degrees to the right or left.

In this embodiment, the direction changing roller 8 is used as the direction changing means. However, the present invention is not particularly limited to this. For example, the direction changing roller 8 may be of the tie-verter type described in the conventional example. Various direction changing means may be used.

Furthermore, the ratio of the peripheral speed on the left and right sides of the roller 4a, the rotational drive speed, and the like can be set arbitrarily. If these are set in accordance with the direction changing means provided in the direction changing unit or the branching unit, The transported object can be surely directed in a desired direction.

[0045]

The present invention has the following effects.

(A) According to the first aspect of the present invention, when a predetermined portion of the lower surface of the conveyed object, which has been changed in direction by the direction changing means and sent out to the entrance of the sub-conveyance path, comes into contact with the rotary drive section, the conveyance is performed. One of the leading end and the trailing end of the object is drawn into the sub-conveying path faster than the other. Therefore, the conveyed material enters the sub-transport path while turning and changing its direction near the entrance of the sub-transport path, and the direction of the conveyed article is changed while maintaining the direction of the conveyed substance. For example, the transport object can be transported in the sub-transport path in a desired direction.

(B) According to the second aspect of the present invention, only the upper peripheral surface of the inclined drive roller is brought into contact with the lower surface of the conveyed object, so that the direction of the conveyed object is reliably converted.

(C) According to the third aspect of the present invention, since the peripheral speeds of the drive roller at both ends in the axial direction are different, the conveyed material that comes into contact with the peripheral surface of the drive roller is turned by this speed ratio. Is done.

(D) According to the fourth aspect of the present invention, the conveyed object can be turned without tilting at the time of contact with the driving roller.

(E) According to the fifth aspect of the invention, when the conveyed object comes into contact with the turn roller during turning, the conveyed object is turned around the turn roller. You can change direction quickly. Further, it is possible to prevent the transported object from dropping from the transport path when changing the direction.

(F) According to the sixth aspect of the present invention, when the conveyed material conveyed in the upstream conveyance path reaches the inclined roller, the inclined roller rotates by receiving the inertial force of the conveyed material. Therefore, the conveyed material gradually moves along the vicinity of the outer peripheral portion of the inclined roller while riding on the inclined roller in contact with the vicinity of the outer peripheral portion of the upper surface of the inclined roller. In this way, the conveyed object is smoothly changed in the direction of rotation of the inclined roller without any significant loss of inertial force in the conveying direction, and is converted to a desired direction via the driving roller, and is conveyed in the sub-conveying path. Will be sent to Therefore, it is possible to quickly change the direction of the conveyed object without stopping or decelerating at the direction changing unit or the branching unit.

(G) According to the seventh aspect of the invention, it is possible to selectively change the direction of the conveyed article in multiple directions only by changing the direction of the inclined roller.

[Brief description of the drawings]

FIG. 1 is a plan view showing a main part of a transport device as an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II of FIG.

FIG. 3 is a sectional view taken along line II-II of FIG. 2;

FIG. 4 is a schematic side view showing a conveyed object conveyed on an inclined roller.

5A is a schematic plan view showing a state in which the opening angle of the inclined roller with respect to the transport direction is set to 45 degrees, FIG. 5B is set to 90 degrees, and FIG.

6A is a sectional view taken along line III-III of FIG. 7,
(B), (c) is sectional drawing which shows an example as a modification of a roller.

FIG. 7 is a plan view of the transport device showing an operation corresponding to FIG. 1;

8A is a sectional view taken along line IV-IV of FIG. 9,
(B), (c) is sectional drawing which shows an example as a modification of a roller.

FIG. 9 is a plan view of a transport device illustrating an operation of a direction changing roller according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveying device 2, 2 'Guide rail 3, 3' Support shaft 4, 4b, 4c Roller 4a Roller (rotation drive part) 8 Direction conversion roller (direction conversion means) 9 Branch part (direction conversion part) 10 Support roller 13 Drive Shaft 14 Belt 15 Pulley 16 Shaft member 16a Inclined shaft 16b Vertical shaft 17 Receiving member 18 Inclined roller 18a Upper surface 19 Transport path surface 20 Support plate 20a Horizontal plate 21 Flange portion 22, 22 'Substrate 23 Pinion 24 Guide member 25 Rack 26 Drive motor 27 Reduction gear 28 Drive shaft 29 Drive pinion 30 Spring 31 Guide roller 40 Support plate A Main transport path B Branch transport path (sub transport path) H Conveyance F Front end R Rear end

Claims (7)

[Claims] 1. A device for changing the direction of a conveyed object by means of a direction changing unit provided in a direction changing unit or a branching unit in a conveying path of the conveyed object, comprising: At the side, at the entrance of a sub-transport path provided so as to be substantially orthogonal to the longitudinal direction of the transport path, there is provided a rotation drive unit that acts to draw in the conveyed material toward the downstream side of the sub-transport path. And a peripheral speed of at least a contact portion of the rotary drive unit with the conveyed object is different at left and right ends in a width direction at an entrance of the sub-conveyance path. 2. The rotation drive section is a cylindrical drive roller that is driven to rotate around an axis that is substantially orthogonal to the longitudinal direction of the sub-conveying path, and the upper part of the peripheral surface of the drive roller is
The device for changing the direction of a conveyed product according to claim 1, wherein the direction changing device is provided so as to be inclined downward from one end side to the other end side. 3. The rotary drive unit is a cylindrical drive roller that is driven to rotate around an axis that is substantially orthogonal to the longitudinal direction of the sub-conveying path, and the drive roller is connected from one end to the other end. 3. The apparatus for changing the direction of a conveyed product according to claim 1, wherein the direction changing device is formed in a tapered shape that tapers toward the direction. 4. An upper peripheral surface of the cylindrical drive roller,
4. The apparatus for changing the direction of a conveyed article according to claim 3, wherein the apparatus is provided so as to be substantially parallel to a conveying path surface. 5. A turn roller having a peripheral surface capable of contacting a side surface of a conveyed object is provided at one of left and right ends in the width direction near the entrance of the sub-conveyance path. A device for changing the direction of a conveyed product according to any of the claims. 6. The apparatus according to claim 1, wherein said direction changing means comprises a substantially disk-shaped inclined roller which rotates around an inclined axis inclined at a predetermined angle with respect to an axis perpendicular to a conveying path surface of the conveyed object. A device for changing the direction of a conveyed product according to any of the claims. 7. The apparatus according to claim 6, wherein the inclination axis of the inclined roller is rotatably provided around an axis perpendicular to a conveyance path surface of the article.