JPH06336331A - Device and method for transfer loading article in roller conveyer - Google Patents

Abstract

PURPOSE:To quickly and surely load an article transferred with the article left as loaded on a roller by providing a transfer loading mechanism part comprising a roller shaft and the roller, and containing this transfer loading mechanism part in partly a conveying line of a conveyer. CONSTITUTION:A transfer loading mechanism 12 is provided in partly conveying lines L1, L2 of a conveyer 1, for instance, in the upstream and downstream ends R1, R2. This transfer loading mechanism 12 is provided with a plurality of roller shafts 3' of length almost two times a roller shaft 3 rotatably linked between side walls 2a, 2a in the upstream and downstream ends R1, R2 of a frame 2. A roller 4', loosely rotatably inserted to this roller shaft 3' and further made movable in its axial length direction when a conveyed article T is loaded corresponding to a conveying path, is provided. Accordingly, the article T is transfer loaded from a position corresponding to the arbitrary conveying line L1, where the article T is conveyed from, to a position corresponding to the other conveying line L2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article transfer device for a roller conveyor and an article transfer method for the same, and relates to a transfer line for transferring articles from a position corresponding to an arbitrary transfer line to another transfer line in a desired row. It is optimally used as a transfer device and a distribution device for articles to be transferred to a position corresponding to, and a retracting device.

[0002]

2. Description of the Related Art Conventionally, a roller shaft is rotatably mounted between the side walls of a frame on a roller conveyor, and the driving force of a motor is passed through power transmission parts such as pulleys, belts; chains, chains and wheels. In some cases, the article is forcibly conveyed by rotating the roller integrally with the roller. Further, as another conventional example of the roller conveyor, as shown in, for example, Japanese Patent Publication No. 55-16932, a common drive shaft arranged in the longitudinal direction of the frame is first rotated and driven by a motor as a drive source. Then, this driving force is passively passed through an appropriate power transmission component, and thereafter, a plurality of roller shafts in which the rollers are loosely inserted are rotated through a plurality of toroidal belts wound around the driving shaft, and the roller shaft and the rollers are rotated. There is one that conveys an article by generating a conveying force by friction and engagement with.

By the way, it is used when transferring an article from an arbitrary transfer line of a conveyor to another transfer line in a desired row, or when transferring an article from a transfer line of an arbitrary conveyor to a desired work target machine. An article transfer device is used. Conventionally, this article transfer device is, for example, one as shown in FIGS. 9 and 10. Ie conveyor K
A frame f, which is provided in a direction substantially intersecting the plurality of transfer lines L ′ ₁ and L ′ ₂ and is vertically movable by a lifting cylinder S ′ as a drive source, and the frame f.
A plurality of roller shafts a rotatably mounted between the front and rear side walls fa, fa facing each other, a roller b attached to the roller shaft a, and a motor M ′ as a rotation drive source.
₁ and the rotational force of the motor M ′ ₁ by the sprocket c,
c ′: a drive shaft e that is passively rotated through a power transmission component such as a chain d wound between the sprockets c and c ′, and a drive pulley g that is attached to the front and rear ends of the drive shaft e. and g, the pulley h for direction change, and h, the sidewall fa, pulley i provided on the front and rear ends of the fa, i; j, wound in and j, to the passive rotary driving force of the motor M _'1 And the transfer belts k and k that rotate.

Then, the article T is conveyed by the rotation of the roller b'on an arbitrary conveying line L' ₁ of the conveyor K as shown by the arrow A, and then the roller b and the transfer belts k, k of the article transfer device. When the sensor s ₁ detects that the article T has been conveyed upward, the rotation of the roller b is stopped and the conveyance of the article T is stopped. Thereafter, the lifting cylinder S ′ is driven to move the article T, which is still placed on the roller b of the article transfer device, to the conveyor line L ′ of the conveyor K.
It is raised with respect to ₁ (see the phantom line position shown in FIG. 9).

[0005] Then 'Since sprockets c _{that 1} is mounted on the motor shaft is driven to rotate, the sprocket c through a chain d which is wound on the sprocket c' motor M is rotated, the sprocket The drive shaft e on which c is mounted is rotated. Therefore, the drive pulleys g mounted on the front and rear ends of the drive shaft e,
The transfer belts k, k wound around g are pulleys i, i;
j, j, and the direction changing pulleys h, h, so that the articles T placed on the transfer belts k, k are moved to a position corresponding to the transfer line L' _1. Is transferred in the direction of arrow B to a position corresponding to another adjacent transport line L' ₂ .

Thereafter, the lifting cylinder S'is driven to lower the roller b and the transfer belts k, k to a height corresponding to the conveyor line L' ₂ of the conveyor K. And conveyor K
The article T was conveyed again to the downstream side of the conveyor K by the rotation of the roller b'on the downstream side in the conveyance line L' ₂ .

[0007]

However, in the above-mentioned conventional article transfer device shown in FIGS. 9 and 10, in contrast to an arbitrary transport line L' ₁ to be transported, another transport line L' _2.
When transferring the article T to the work target machine, the article T is once lifted with respect to the transfer surface of the transfer line L ′ ₁ , and then transferred to another transfer line L ′ ₂ . Then, after the transfer, the operation and the step of lowering the article T again with respect to the transport surface of the other transport line L' ₂ are required. Therefore, when transferring the article T from a position corresponding to an arbitrary transfer line to a position corresponding to another transfer line, much labor and time are required, and work efficiency is poor.

Therefore, an object of the present invention is to make it possible to transfer articles quickly and reliably with good work efficiency while the articles are placed on the rollers.

[0009]

In order to solve the above problems, the present invention provides a rotatable roller shaft mounted on a frame, a roller shaft loosely inserted in the roller shaft, and friction on the roller shaft due to the load of an article. From a transfer mechanism section formed by a roller that is rotatable by engaging and passively rotating a rotational force, and that is movable in the axial direction of the roller shaft when an article is placed from the transport path. The transfer mechanism is included in a part of the conveyor conveyor line.

Further, according to the present invention, a roller shaft is rotatably mounted on a frame, and on the roller shaft, a roller movable by a transfer mechanism section for moving in the axial direction of the roller shaft is arranged. The roller is moved from a position corresponding to an arbitrary conveyance line to a position corresponding to another conveyance line so that the conveyance state of the article can be changed.

Further, according to the present invention, a roller loosely inserted in a roller shaft rotatably mounted on a frame is held by a holding body, and a driving source is driven to move the roller in the axial direction of the roller shaft, so that the article is We adopted the means of transferring.

[0012]

Function: The article T is an arbitrary transport line L on the conveyor 1.₁Up
Is conveyed to the transfer mechanism section 12, the rollers 4 '
The rotation stops and the conveyance of the article T stops. Next drive source
Is driven, the roller 4'places the article T thereon.
While moving in the axial direction with respect to the roller shaft 3 '
Then, the article T is transported by any transport line L that has been transported. ₁Against
From the corresponding position to another transfer line L₂To the position corresponding to
Listed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. Reference numeral 1 denotes a conveyor. The conveyor 1 has a large number of roller shafts 3 rotatably mounted between opposite side walls 2a, 2a of a frame 2, and is loosely inserted into the roller shafts 3 to place an article T thereon. When a load is applied, the rollers 4 are rotated by friction and engagement so as to convey the article T, a motor M ₁ as a drive source for rotating the rollers 4, and the length of the frame 2. By rotating the common drive shaft 5 rotatably along the direction and the pulley 6 mounted on the drive shaft 5 and one end of the roller shaft 3, the rotational force of the motor M ₁ is increased. It is the same as a known conveyor in that it is a so-called slip torque type conveyor which is composed of a large number of toroid belts 7 for passively rotating the roller shaft 3.

In order to transmit the rotational force of the motor M _{1 to} the drive shaft 5, for example, a sprocket 8 mounted on the motor shaft of the motor M ₁ and a sprocket 9 mounted on the drive shaft 5 are power transmission parts. Power is transmitted by winding the chain 10 as.

However, the conveyor 1 of this embodiment is shown in FIG.
As shown in FIG. 3, one end of each of the left and right roller shafts 3, 3 is provided between the side walls 2a, 2a of the frame 2 of the single conveyor 1 so that one end of each of the left and right roller shafts 3, 3 is attached to the side wall 2a 2a and the other ends of the roller shafts 3, 3 are supported by the partitioning part 11 at a substantially intermediate portion of the conveyor 1, whereby a single conveyor 1 is circulated in a plurality of rows, for example, two rows of the conveyance lines L. ₁ and L ₂ are provided.

The roller shaft 3 is made of metal such as stainless steel, and the roller 4 rotatably loosely inserted in the roller shaft 3 is made of hard plastic and has a substantially cylindrical shape.

Reference numeral 12 denotes the conveyor line L ₁ of the conveyor ₁ ,
Part of L ₂ , for example, a transfer mechanism section provided at the upstream end R ₁ and the downstream end R _2, and this transfer mechanism section 12 is a side wall 2 a of the upstream side R ₁ and the downstream side R ₂ of the frame 2. , 2a rotatably mounted between the roller shafts 3a and 2a, and a plurality of roller shafts 3'having a length about twice that of the roller shaft 3 and rotatably loosely inserted in the roller shafts 3'and corresponding to a conveying path When an article T that is conveyed is placed, the roller 4'movable in the axial direction of the roller shaft 3'and the left and right side surfaces 4'a, 4'b of the roller 4'are engaged. It is possible to move the roller 4'in the axial direction of the roller shaft 3'through the holding body 13 having a substantially U-shaped front face provided with the side plates 13a and 13b which can be fitted together. And a cylinder 14 as a driving source for driving.

At this time, the rollers 4, 4'and the rollers 4, 4 '
The relationship with the roller shafts 3 and 3'which are loosely inserted in 4'is
When the article T is placed on the rollers 4, 4; 4 ', 4', respectively, the article T does not fall between the rollers 4, 4; 4 ', 4', and the article T is delivered. A sufficient number of installations are required for smooth and stable operation. For example, as shown in FIG. 4, for one article T to be conveyed, at least two or three rollers 4, 4; 4 ', 4'are required. At the same time, it has a size that abuts on the bottom surface of the article T and is arranged at a predetermined interval. Of these, the roller 4'is moved in the axial direction with respect to the unloaded portion 3'a of the roller shaft 3'where the roller 4'is not loosely inserted.

A drive mechanism for rotationally driving the roller 4'with respect to the roller shaft 3'is a motor M ₂ as a rotational drive source, and a pulley 15 mounted on the motor shaft of the motor M ₂ . The roller shaft 3'is formed of a belt 16 as a power transmission component wound around a pulley 6'mounted on one end of the roller shaft 3 '.

S ₁ is a sensor provided at the downstream end of the carrying line L ₁ , and this sensor S ₁ carries the article T on the carrying line L ₁ of the conveyor 1 to the transfer mechanism section 12 and places it. Then, by detecting it, the rotation of the motor M ₁ for rotationally driving the plurality of rollers 3 of the conveyor 1 is stopped and a signal is sent to the cylinder 14 to drive it, thereby extending the cylinder rod 14a. It is like this.

S₂Is the transport line L₂Upstream end of
L₁(Located at the downstream end of),
This sensor S₂Is the transport line L₁At the position corresponding to
The article T placed on the roller 4'of the transfer mechanism unit 12
Together with the roller 4'in the axial direction of the roller shaft 3 '.
Arbitrary transport line L₁From the position corresponding to
L₂When it is transferred to the position corresponding to
A signal to stop driving the cylinder 14 to move
The motor M of the transfer mechanism 12 that is emitted ₂Is the reverse
Then, the roller shaft 3'is reversed. In this way
In L₂The roller shaft 3 of the conveyor 1 in
Data M₁Is driven and rotated,
Gears that frictionally engage the shaft 3'and the roller shaft 3.
La 4, 4'reverses and transport line L₂The article T is conveyed over
To be done.

In this case, the toroid belt 7 wound between the pulley 6 mounted on one end of the roller shaft 3 and the common drive shaft 5 of the one transport line L ₁ and the other transport line L _2. If the winding direction is reversed, the roller shaft 3 of the transport line L _{1 and} the roller shaft 3 of the transport line L ₂
The rotation directions of and can be reversed.

In addition, in FIG. 1 and FIG. 2, since one common drive shaft 5 is provided on the side of the side wall 2a of the frame 2 in the transfer line L _2, the toroid belt 7 in the transfer line L ₁ is transferred. It is shown to use a longer toroid belt 7 in line L ₂ . However, the drive shaft 5 is attached to the side walls 2a, 2a of the frame 2.
When the toroid belts 7 and 7 are used in the transport lines L ₁ and L ₂ , respectively, the lengths of the toroid belts 7 and 7 can be the same.

Further, the common drive shafts 5 and 5 are separately arranged on the plurality of transfer lines L ₁ and L ₂ of the single conveyor 1, and the drive shafts 5 and 5 and the rollers on the transfer lines L ₁ and L ₂ are arranged. By individually winding the toroid belts 7, 7 between the pulleys 6, 6 provided at one end of the shafts 3, 3,
It is also possible to rotate the respective roller shafts 3 and rollers 4 in the transport lines L ₁ and L ₂ .

S ₃ is a sensor provided at the downstream end of the transport line L ₂ (corresponding to the upstream end of the transport line L ₁ ), and this sensor S ₃ is upstream of the transport line L _2. When an article T on the downstream side is conveyed on the roller 4 'of the transfer mechanism 12 provided on the upstream side R ₁ of the conveyor 1 from the side, stop the conveyance of the article T to stop the rotation of the motor M ₂ At the same time, the cylinder 14 as a drive source is driven to generate a signal for moving the roller 4'in the axial direction of the roller shaft 3 '.

S ₄ is a sensor provided at the downstream end of the transport line L ₂ (positioned at the upstream end of the transport line L ₁ ). The sensor S ₄ causes the roller 4 ′ to move in the axial direction of the roller shaft 3 ′. For stopping the drive of the cylinder 14 as a drive source when the carrier 14 is moved via the holder 13 from a position corresponding to an arbitrary transport line L ₂ to a position where it is transferred to another transport line L _1. Is.

The first embodiment of the present invention has the above structure,
In order to convey the article T, first, the conveyor line L of the conveyor 1
_When the motor M _{1 in 1} drives, the sprocket 8 and the drive shaft 5 mounted on the motor shaft of this motor M ₁
Chain 1 wound around a sprocket 9 mounted on the
The rotational driving force of the motor M ₁ is passively passed to the shared drive shaft 5 via 0, and the drive shaft 5 is rotated.

A large number of roller shafts 3 mounted between one side wall 2a of the frame 2 and the partition member 11.
The rotation of the drive shaft 5 is passively passed through the pulley 6 via the toroid belt 7 wound between the pulley 6 installed at one end of the drive shaft 5 and the shared drive shaft 5, and the multiple roller shafts 3 rotate respectively. To be done. At this time, the winding direction of the toroid belt 7 wound around the roller shaft 3 of the _one conveyance line L ₁ and the other conveyance line L ₂ and the common drive shaft 5 is opposite to each other. The roller shaft 3 on the line L _{1 and} the roller shaft 3 on the transport line L ₂ rotate in opposite directions. Therefore, the roller 4 loosely inserted in the roller shaft 3 of the arbitrary transport line L ₁ is frictionally engaged with the roller shaft 3 when the load of the article T is applied,
The article T placed on the roller 4 is transported along the transport line L ₁ of the conveyor ₁ from the upstream side R ₁ to the downstream side R ₂ as shown by the arrow a.

Then, the article T is placed on the roller 4'corresponding to the transport path of the transfer mechanism section 12 provided at the downstream end of the transport line L _1.
When the sensor S ₁ detects that the paper has been conveyed, the rotation of the motor M ₂ as a rotation drive source is stopped by a stop signal generated from the sensor S ₁ . At the same time, the cylinder 14 is driven. So this cylinder 1
The side plates 4a, 13b of the holding body 13 having a substantially U-shape in plan view connected to the four cylinder rods 14a of the four side surfaces 4a,
The plurality of rollers 4'b engaged with each other 4'b are in the axial direction of the plurality of roller shafts 3'when the article T is placed by the extension of the cylinder rod 14'a of the cylinder 14. The holder 13 is engaged with the holder 13 and moved as shown by the arrow B.

In this way, the article T conveyed to a position corresponding to an arbitrary conveyance line L ₁ of the plurality of conveyance lines provided on the single conveyor 1 is the other conveyance line L ₂
Is transferred to the position corresponding to. In this case, the roller shaft 3'is made of metal such as stainless steel, and the roller 4'is made of hard plastic so that the roller shaft 3'has a small resistance to friction and easily slides. As shown in FIG. 4, the inner peripheral surface of the roller 4'has a small resistance due to the line contact, so that the roller 4'can be moved quickly and smoothly.

When the sensor S ₂ detects that the article T has been transferred from the position corresponding to the _one transfer line L ₁ to the position corresponding to the other transfer line L ₂ in this way, the transfer mechanism section Since the motor M _{2 of} 12 rotates in the reverse direction to rotate the plurality of roller shafts 3 ′, the rollers 4 ′ loosely inserted in the roller shafts 3 ′ are reversed by friction and engagement with the roller shafts 3 ′. Is rotated in the direction.

Moreover, when the motor M ₁ in the conveyor line L ₂ of the conveyor 1 is driven to rotate the common drive shaft 5 via the power transmission components such as the sprockets 8 and 9, the chain 10, the common drive shaft 5 is rotated. A large number of roller shafts 3 in the transport line L ₂ with the pulley 6 installed at one end are rotated through the toroid belt 7 wound on one side and wound on the pulley 6 on the other side. At this time, the roller shaft 3 of the transport line L _{1 and} the roller shaft 3 of the transport line L ₂ rotate in opposite directions because the winding direction of the toroid belt 7 with respect to the common drive shaft 5 is reversed. Therefore, the roller 4 is rotated by friction and engagement with the roller shaft 3 of the transport line L ₂ , and the article T is transported in the arrow C direction on the transport line L ₂ .

In the illustrated embodiment, to convey the article T along any one conveying line L ₁ and another conveying line L ₂ ,
The one transport line L ₁ and the other transport line L ₂ are wound by reversing the winding direction of the toroid belt 7 with respect to one drive shaft 5 that is commonly used.
Although the articles T are conveyed in mutually opposite directions as shown in C, it is easy to convey the articles T in the same direction. This can be easily achieved by winding the toroid belt 7 around the drive shaft 5 in the same direction on the transport line L ₁ and the transport line L ₂ .

When the sensor S ₃ detects that the article T has been conveyed onto the roller 4 ′ of the transfer mechanism section 12 provided on the downstream side of the transfer line L ₂ , the transfer mechanism section 1
The rotation of the _second motor M ₂ is stopped. Cylinder 1 at the same time
4 is driven to move the holder 13 in the direction of arrow D as the cylinder rod 14a extends. Accordingly, the side plates 4a, 4'on the side plate portions 13a, 13b of the holder 13 are formed.
The roller 4'with which b is engaged remains engaged with the holding body 13 in the axial direction of the roller shaft 3'with the article T placed on it, from the position corresponding to one transport line L ₂ to the other. Is moved to a position corresponding to the transport line L ₁ .

Thus, the transport line L₁Roller 4 '
When the article T is moved, the article T is transferred to one of the transport lines L₂Corresponding to
Transfer line L from storage₁Is transferred to the position corresponding to
The sensor S_FourCylinder 1 when detected by
4 drive stops, motor M ₂Is reversed. Thus moved
Since the roller shaft 3'of the mounting mechanism section 12 is reversed,
The roller 4'loosely inserted into the roller shaft 3'of
And rotation in the direction indicated by arrow a
Transport line L₁The article T is conveyed over. Thus
Multiple conveyor lines L provided on a single conveyor 1₁, L₂
The articles T from the upstream side to the downstream side and from the downstream side to the upstream side
Will be sequentially transferred to and circulated.

In this embodiment, the single conveyor 1 is provided with the two lines of the transfer lines L ₁ and L ₂ , but it is also possible to provide the transfer lines L ₁ , L ₂ ... it can. Then, the articles T are sequentially transferred to the adjacent transfer lines L ₁ , L _2, ... Or, the articles T are transferred to the transfer lines every other row or every other row by using the transfer mechanism section 12 and transferred. You can also do it.

In addition, the conveyor 1 conveys the article T by inserting the roller 4 loosely on the rotatable roller shaft 3 and frictionally engaging the load of the article T to obtain a passive force from the motor M _1. Since it is a conveyor with a slip torque in which the roller 4 idles with respect to the roller shaft 3 when a load is applied, the article T on the conveyor lines L ₁ and L ₂ of the transfer mechanism unit 12 can be used. When the articles T collide with each other, the colliding articles T stand still on the roller 4. If there is no collision, the articles T are smoothly transported on the rollers 4, so that the articles T do not become confused (jam) with each other, and there is no problem such as damage due to the collision of the articles T. Can be reliably transported. Further, since a large number of toroidal belts 7 are wound around the shared drive shaft 5 so that a large number of roller shafts 3 in which the rollers 4 are loosely inserted can be rotated, speed control of articles T to be conveyed is also easy. And it can be done reliably.

What is shown in FIGS. 5 and 6 is the second embodiment of the present invention.
An example is shown. In this embodiment, a row of rows provided on the upstream side, for example, one row of conveyors 1 and a plurality of rows provided on the downstream side,
For example, a connection portion 20 with three rows of conveyors 1A, 1B, 1C
The transfer mechanism section 12 is provided in the. Then, the articles T conveyed on the rollers 4 of the upstream row of conveyors 1 are
The carrier 13 that holds the rollers 4 ′ when conveyed and placed on the plurality of rollers 4 ′ of the transfer mechanism unit 12.
The cylinder rod 14a of the cylinder 14 extends or contracts to engage the roller 4'and move in the axial direction of the roller shaft 3 '. Therefore, the article T placed on the roller 4'corresponds to any one of a plurality of downstream conveyors 1A, 1B, 1C provided at a total of three positions including a downstream intermediate (neutral) position and left and right positions thereof. The position to be selected is selected and transferred.

Further, in the second embodiment, a plurality of conveyors 1A are provided on the downstream side with respect to the upstream row of the conveyor line L ₁ .
By providing the articles 1B and 1C, the articles T to be conveyed can be sorted and conveyed by transferring the articles T to the position corresponding to any of the plurality of conveyors 1A, 1B and 1C by the transfer mechanism section 12. . Therefore, when performing work such as assembling or inspecting the article T in the downstream transport line, it is suitable to sort the article T according to the work situation, and the article T is not confused (jam). Therefore, it is possible to prevent the articles T from being scratched by coming into contact with each other.

Although not shown in the figure, the articles T of different uses, types, etc. are conveyed in multiple rows to the conveyor line of the conveyor 1 on the upstream side, and then the cylinder 14 of the transfer mechanism section 12 is driven. By this, the roller 4'engaged with the holder 13 is moved in the axial direction of the roller shaft 3 ', and is used for the conveyors 1A, 1B, 1C on the downstream side,
This is suitable when the articles T are transferred for each different type to be sorted and conveyed.

7 and 8 show a third embodiment of the present invention. In this embodiment, the conveyor 1 is conveyed in the left and right lateral directions substantially intersecting the longitudinal direction of the conveyor 1. A plurality of roller shafts 3 ″ each having a length about 3 times the width of the line L ₁ are extended, and a roller 4 ′ having a length about twice the width of the transport line L ₁ is provided on the roller shaft. It is configured to be loosely inserted so as to be movable in the axial direction of 3 ″.

Then, on the roller 4 of the conveyor 1, the upstream side R
_When the desired article T conveyed from ₁ is placed on the roller 4'of the transfer mechanism unit 12, the cylinder rod 14a of the cylinder 14 provided in the transfer mechanism unit 12 is extended or The roller 4'on which the article T is placed in the axial direction of the roller shaft 3 "by being contracted is moved via the holder 13.

At this time, when the article T is transferred to the right side (front side) of the conveyor 1 and retracted, the roller of the transfer mechanism section 12 having a length about twice the width of the transfer line L _1. 4 '
Is displaced by the holder 13 from the position indicated by the solid line with respect to the transport line L ₁ of the conveyor 1 to the front side, and the transport line L
_Since it is located above ₁ , the succeeding article T, which is not retracted in the transfer mechanism section 12, is conveyed as it is to the downstream side of the conveyor 1 by the rotation of the rollers 4 and 4 '. When the article T is transferred to the left side (opposite side) of the conveyor 1 and retracted, the roller 4 ′ of the transfer mechanism unit 12 is previously displaced to the front side with respect to the conveyor line L ₁ of the conveyor 1. , The roller 4 ′ is still on the transport line L ₁ even after the roller 4 ′ is transferred by the holder 13 together with the article T, the subsequent article T not retracted by the transfer mechanism unit 12.
Is conveyed to the downstream side of the conveyor 1 as it is by the rotation of the rollers 4 and 4 '.

In this embodiment, the article T is conveyed to the conveyor 1 in one line, but
When a large number of articles T are conveyed in multiple rows and the articles T are inspected and assembled, the articles T are inspected without causing confusion.
This embodiment is effective for reliable and efficient assembly.

In the first embodiment shown in FIGS. 1 to 4, the single conveyor 1 is provided with two rows of transfer lines L ₁ and L ₁ .
_Although not shown in the figure, a plurality of conveyor lines ₁ are provided in a plurality of rows so that the plurality of conveyor lines L ₁ , L _2, ...
, And the transfer mechanism 12 is provided across the adjacent transport lines L ₁ , L _2, ... By moving the roller 4 ′ in the axial direction of the roller shaft 3 ′, the article T is transferred to any transport line. It is also within the scope of the present invention to transfer from the position corresponding to L ₁ to the position corresponding to the other transport line L ₂ .

Further, in the article distributing apparatus of the second embodiment shown in FIGS. 5 and 6, one row of conveyors 1 is provided on the upstream side with respect to the transfer mechanism section 12, and a plurality of rows, for example, on the downstream side. Three rows of conveyors 1A, 1B, 1C are provided, but this is an example. Although not shown in the figure, a plurality of rows of conveyors are provided on the upstream side, and further a row of conveyors is provided on the downstream side, so that the articles T conveyed from the plurality of upstream rows of conveyors are transferred. Mounting mechanism 12
It can also be transferred to a downstream row of conveyors by selectively transferring and sorting.

Further, in the third embodiment shown in FIGS. 7 and 8, the roller shafts 3 ″ are extended on the left and right sides of the conveyor 1 so that the rollers 4 ′ can move in the axial direction of the conveyor 1. And transfer the article T to the transfer mechanism section 12
Of the roller shaft 3 ″ is retracted to the right or left to sort the conveyed articles T. However, the roller shaft is directed to at least one of the right side and the left side with respect to the conveyor 1. It is also possible to retract the article T by extending 3 "and moving the roller 4'to either the right side or the left side by loosely inserting the roller 4'on the roller shaft 3". It is a range.

In the second embodiment, two cylinders 14 and 14 of the same structure are arranged to face each other in order to drive the roller 4'of the transfer mechanism 12, and the side surface 4'a of the roller 4'is arranged. , 4'b are connected to the holding body 13 that is connected to the cylinder rods 14a, 14a, but the two cylinders 14, 14 are not necessarily used, and the cylinder rods that can be extended in the left-right direction It is also possible to use one bidirectional cylinder with. In this case, the number of parts is reduced, manufacturing and assembling are easy, and manufacturing cost and equipment cost are low.

In the first to third embodiments described above, the cylinder 14 is used as the drive source for moving the holder 13, but the cylinder 14 is used as the drive source as in each of the above embodiments. In addition to the mechanical type used, a magnetic attraction means such as a plunger is used, or a motor is used to move the holder 13 to the rack 13 and the shaft length of the roller shafts 3'and 3 "using a power transmission component such as a rack and a pinion. You can move in any direction.

[0050] Also any of the above embodiments also each conveying line L ₁ of the conveyor, L ₂ of the roller shafts 3, 3 ', 3 "in the relaxed inserted are rollers 4, 4' substantially the width of the conveyor line L _1, L ₂ Although shown as having a substantially cylindrical shape with dimensions, a plurality of rollers divided in the axial direction are loosely inserted into the roller shafts 3, 3 ′, 3 ″ so as to be rotatable. can do. And the transfer mechanism section 12
It is also possible to engage the plurality of rollers divided in 1 by the holding body 13 so as to be movable in the axial direction of the roller shafts 3'and 3 ".

In the first to third embodiments, the conveyor is rotatably mounted by loosely inserting the roller 4 with respect to the roller shaft 3, and the article T is rubbed and engaged by the load of the article T. Although the transfer mechanism unit 12 is assembled to a so-called slip torque conveyor that conveys, the transfer mechanism unit 12 is also installed in a roller conveyor of a type in which the roller 4 is fitted into the roller shaft 3 and integrally rotates. Applying is the scope of the invention.

[0052]

As described above, according to the present invention, the rotatable roller loosely inserted in the roller shaft is moved in the axial direction by driving the drive source so that the article is placed on the roller. Does not need to be moved up and down as in the past, and it does not require any special equipment or facilities, and can quickly and reliably and efficiently transfer between conveyor transfer lines from a position corresponding to an arbitrary transfer line to another transfer. Articles can be transferred to the position corresponding to the line.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is an explanatory plan view similarly showing a usage state.

FIG. 4 is a sectional view showing a roller on which a roller shaft is similarly loosely inserted.

FIG. 5 is a perspective view showing a second embodiment of the present invention.

FIG. 6 is an explanatory plan view similarly showing a usage state.

FIG. 7 is a perspective view showing a third embodiment of the present invention.

FIG. 8 is a plan view showing a use state of the same.

FIG. 9 is a front view showing an example of a conventional article transfer device of this type.

FIG. 10 is a view on arrow AA of FIG.

[Explanation of symbols]

1 Conveyor 2 Frame 3 Roller Shaft 3'Roller Shaft 4 Roller 4'Roller 12 Transfer Mechanism 13 Holding Body 14 Cylinder L ₁ Conveying Line L ₂ Conveying Line T Article

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location B65G 47/68 Z 8010-3F

Claims (15)

[Claims] 1. A rotatable roller shaft mounted on a frame, and a roller shaft loosely inserted in the roller shaft, which can be rotated by friction and engagement with the roller shaft by the load of an article to pass a rotational force. And a transfer mechanism part formed by a roller that is movable in the axial direction of the roller shaft when an article is placed from the transfer path, and the transfer mechanism part is a part of a conveyor conveyor line. An article transfer device for a roller conveyor, which is characterized in that: 2. The conveyor comprises a plurality of roller shafts rotatably mounted on the frame, and a motor that is loosely inserted into the roller shafts, and when an article is placed, friction and engagement with the roller shafts. 2. The article transfer device for a roller conveyor according to claim 1, wherein the article transfer device is formed of a roller that is driven to rotate by passively receiving a rotational force from the roller. 3. A holding body which is engageable with the left and right side surfaces of the roller is provided, and a cylinder is provided as a drive source for enabling the roller to move in the axial direction of the roller shaft via the holding body. The article transfer device for the roller conveyor according to claim 1. 4. A single conveyor is provided with a plurality of rows of transfer lines, and a transfer mechanism is provided across at least adjacent transfer lines of the transfer lines. Item 3. The roller conveyor article transfer device according to any one of 2 above. 5. A plurality of the conveyor lines are provided in parallel to provide a plurality of rows of conveyor lines, and a transfer mechanism is provided at least between the conveyor lines adjacent to each other. Claim 1 or Claim 2
The article transfer device for the roller conveyor according to any one of 1. 6. The transfer mechanism section according to claim 1 or 2, wherein a transfer mechanism section is provided at a connecting portion between the row of conveyors located on the upstream side and the plurality of rows of conveyors located on the downstream side. Roller conveyor article transfer device. 7. The transfer mechanism section according to claim 1, wherein a transfer mechanism section is provided at a connecting portion between a plurality of rows of conveyors located upstream and a row of conveyors located downstream. Roller conveyor article transfer device. 8. The roller shaft is extended in at least one direction substantially intersecting with the longitudinal direction of the conveyor, and the roller is loosely inserted in the roller shaft so as to be movable in the axial direction. The article transfer device for the roller conveyor according to claim 1. 9. The roller according to claim 1, wherein a plurality of divided rollers are loosely inserted so as to be movable in the axial direction of the roller shaft, and the plurality of rollers are held in a holder. Alternatively, the roller conveyor article transfer device according to claim 3. 10. The roller conveyor article transfer device according to claim 6, wherein the conveyor line on the downstream side is provided with a plurality of rows on a single conveyor. 11. A roller shaft is rotatably mounted on a frame, and a roller that can be moved by a transfer mechanism section that moves in the axial direction of the roller shaft is arranged on the roller shaft. The method for transferring an article on a roller conveyor, characterized in that the article conveyance state can be changed by moving from a position corresponding to another conveyance line to a position corresponding to another conveyance line. 12. The transfer mechanism section is provided between a row of conveyors on the upstream side and a plurality of rows of conveyors on the downstream side, and transfers articles to any of the plurality of rows of conveyors. The method of transferring an article on a roller conveyor according to claim 11, wherein: 13. The transfer mechanism section is provided at a connecting portion between a plurality of rows of conveyors located on the upstream side and a row of conveyors located on the downstream side, and transfers an article to one of the plurality of rows of conveyors. The article transfer method of the roller conveyor according to claim 11, wherein the article transfer is performed. 14. The roller shaft is extended in at least one direction substantially intersecting the longitudinal direction of the conveyor, and the roller is loosely inserted so as to be movable in the axial direction of the roller shaft. Item 11. The roller conveyor article transfer method according to item 11. 15. A roller, which is loosely inserted into a roller shaft rotatably mounted on a frame, is held by a holder, and a drive source is driven to move the roller in the axial direction of the roller shaft to transfer articles. A method for transferring articles on a roller conveyor, which comprises: