JP2003081415A - Conveying equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide conveying equipment 11 for surely transmitting a drive force from a drive shaft 27 to a conveying roller 16. SOLUTION: The conveying roller 16 and a transmission sheave 37 for driving are coaxially pivoted on a frame 12. Clutch bodies 44 and 45 in surface-contact with each other are installed on a connection surface between the conveying roller 16 and the transmission sheave 37 for driving. The drive force from the drive shaft 27 is transmitted to the transmission sheave 37 for driving through a transmission belt 43. The transmission sheave 37 for driving is positioned close to and apart from the conveying roller 16 by a closing and departing drive means 38 to transmit the drive force from the transmission sheave 37 for driving to the conveying roller 16 or release the transmission of the drive force. When the transmission sheave 37 is connected to the conveying roller 16, the transmission sheave 37 comes into surface contact with the conveying roller 16 to transmit the drive force fro the transmission sheave 37 for driving to the conveying roller 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrying device for carrying a product.

[0002]

2. Description of the Related Art Conventionally, while transporting a transport object on a transport surface, in order to prevent the transport objects from approaching or colliding with each other before and after the transport direction, the subsequent transport object is transported depending on the position of the transport object. There is known a roller conveyor having an accumulation function of controlling so as to temporarily stop or restart the conveyed goods.

In such a roller conveyor, for example,
As described in Japanese Patent Application Laid-Open No. 9-110121, a plurality of conveying rollers are arranged to form a conveying surface, and a non-stop section is provided on the conveying surface and a temporary stop is made upstream of the non-stop section in the conveying direction. The section is set. The drive shaft is arranged along the lower area of the plurality of transport rollers, the driving force is constantly transmitted from the drive shaft to each transport roller in the non-stop section, and the drive shaft is provided in each transport roller in the temporary stop section. The driving force is selectively transmitted via the clutch mechanism.

The clutch mechanism has a sleeve that is rotatably engaged with the periphery of the drive shaft, and an endless transmission belt is stretched between the sleeve and each conveying roller in the temporary stop section. A drive side clutch plate is fixed to the drive shaft, and a driven side clutch plate is fixed to one end of the sleeve so as to face the drive side clutch plate. When there is no transported object in the non-stop section, the driven clutch plate of the sleeve is joined to the fixed clutch plate by the urging force of the spring, and the driving force of the drive shaft is transferred through the sleeve and each transmission belt. This is transmitted to the rollers, and the conveyance rollers in the temporary stop section rotate to convey the conveyed object. Further, when the conveyed product advances to the non-stop section and the sensing roller arranged in the non-stop section is pushed down by the conveyed article, the sleeve urges the spring through the swing lever supporting the sensing roller. Against the other direction, the driven side clutch plate separates from the driving side clutch plate to release the transmission of the driving force, and the rotation of the conveyance roller in the temporary stop section is stopped to stop the conveyance of the conveyed object. Let

Further, as described in, for example, Japanese Unexamined Patent Application Publication No. 10-35842 or Japanese Unexamined Patent Application Publication No. 2000-344316, a conveying roller is attached to a peripheral surface of a drive shaft or a drive roller attached to the drive shaft. By connecting and disconnecting the peripheral surface of the driven roller that transmits the driving force to the drive roller, the transmission and the release of the driving force from the drive shaft to the conveying roller are switched.

[0006]

However, in the structure disclosed in Japanese Patent Laid-Open No. 9-110121, the sleeve provided corresponding to the region of the temporary stop section of the conveying surface is long, large, and has a large mass. However, there is a problem in that the drive shaft with which the sleeve engages is likely to be bent, and the rotational load of the drive shaft is increased and the vibration and noise of the drive shaft are increased.

Further, the driven side clutch plate is joined to the driving side clutch plate by the biasing force of the spring. When the biasing force of the spring is increased to increase the joining force, the clutch is disengaged against the spring. Therefore, a large load is required to push down the sensing roller, and it may be difficult to push down the sensing roller for a lightly conveyed object.
Therefore, the urging force of the spring cannot be increased so much that slippage is likely to occur between the driven side clutch plate and the drive side clutch plate due to the load on the conveying roller being conveyed.
There is a problem that the drive force is not reliably transmitted from the drive shaft to the transport roller.

Further, in the structure disclosed in JP-A-10-35842 or JP-A-2000-344316, the peripheral surface of the drive shaft or the drive roller attached to the drive shaft and the peripheral surface of the driven roller on the conveying roller side. The driving force is transmitted by joining the surfaces to each other, but since the joining is a line contact between the peripheral surfaces, slipping is likely to occur due to a carrying load on the carrying roller, and the driving force from the driving shaft to the carrying roller is There is a problem of uncertain communication.

The present invention has been made in view of the above point, and can transmit and release the driving force to the conveying roller without providing a clutch mechanism on the driving shaft, and at the same time, can drive the driving force from the driving shaft to the conveying roller. It is an object of the present invention to provide a transfer device capable of reliably transmitting the.

[0010]

According to a first aspect of the present invention, there is provided a conveying device, wherein a frame, a conveying roller rotatably supported by the frame, and a coaxial and rotatably arranged shaft in the axial direction of the conveying roller. A supported rotating body, a drive shaft that is driven to rotate, a transmitting unit that transmits a driving force from the drive shaft to the rotating unit, and a contact / separation driving unit that contacts and separates the transport roller and the rotating unit in the axial direction. It is equipped with.

In this structure, the conveying roller and the rotating body are coaxially supported, the driving force is transmitted from the drive shaft to the rotating body by the transmitting means, and the conveying roller and the rotating body are pivoted by the contact / separation driving means. By connecting and disconnecting in the direction, the driving force can be transmitted to and released from the transport roller without providing a clutch mechanism on the drive shaft, and the end faces of the transport roller and the rotating body are in surface contact with each other so that the transport is performed. Sliding does not easily occur even if a load is applied to the rollers, and the drive force is reliably transmitted from the drive shaft to the transfer rollers.

According to a second aspect of the present invention, there is provided the first aspect of the present invention, wherein the end faces of the conveying roller and the rotating body that face each other are provided with a clutch body that is in surface contact with each other.

Further, in this structure, since the clutch body of the conveying roller and the clutch body of the rotating body are in surface contact with each other, the coupling force at the time of joining the conveying roller and the rotating body is improved,
Transmission of driving force is ensured.

According to a third aspect of the present invention, there is provided the conveying device according to the first or second aspect, wherein the contact / separation driving means urges the rotating body in a direction in which the rotating body is separated from the conveying roller. Part is swingably supported, and a pressing lever having an intermediate part provided with a pressing part for pressing the rotating body toward the conveying roller, and the pressing lever is swung via the other end of the pressing lever. It has a pressing drive unit.

Further, in this structure, by transmitting the driving force from the rotating body to the conveying roller by urging the rotating body in the direction of separating from the conveying roller by the separating and urging means, the transmission of the driving force from the rotating body to the conveying roller can be surely released. , The other end of the lever whose one end is swingably supported is pressed by the pressing drive unit, and the rotating body is pressed by the pressing unit in the middle of the pressing lever to the transport roller, so that the pressing drive unit directly presses The pressing force is higher than that in the case of, and the bonding force at the time of joining the rotating body and the transport roller is improved,
Transmission of driving force is ensured.

According to a fourth aspect of the present invention, there is provided a transport device including a frame,
A transport roller rotatably supported by the frame, a drive shaft driven to rotate, and a transport rotator disposed between the transport roller and the drive shaft and rotatably supported by the frame. A driving rotary member coaxially and rotatably supported side by side in the axial direction of the transport rotary member, and a contact / separation drive means for moving the transport rotary member and the drive rotary member in the axial direction. A clutch unit, a drive transmission means for transmitting a drive force from the drive shaft to the drive rotation body, and a conveyance transmission means for transmitting the drive force from the conveyance rotation body to a conveyance roller. is there.

In this structure, a clutch unit is arranged between the conveying roller and the driving shaft, and the clutch unit is provided with a driving force for transmitting the driving force from the driving shaft to the conveying roller and the conveying roller. The transport roller to be transmitted is coaxially supported, and the contact / separation drive means moves the drive rotor and the transport rotor in and out in the axial direction, so that the drive roller does not have a clutch unit and the transport roller is provided. The drive force can be transmitted to and released from the drive roller, and the end faces of the drive rotating body and the transport rotating body are in surface contact with each other, so slipping does not occur easily even when the transport roller is subjected to a transport load, and the drive shaft The drive force is reliably transmitted from the transport roller to the transport roller.

According to a fifth aspect of the present invention, there is provided the conveying device according to the fourth aspect, wherein the conveying rotary body and the driving rotary body are provided with clutch bodies which are in surface contact with each other at their end surfaces facing each other. is there.

In this structure, since the clutch body of the transport rotary body and the clutch body of the drive rotary body are in surface contact with each other, the coupling force at the time of joining the transport rotary body and the drive rotary body is improved. It is possible to reliably transmit the driving force.

According to a sixth aspect of the present invention, in the fourth aspect of the present invention, the clutch unit has a support shaft projecting from the frame in parallel with the axial direction of the transport roller. In addition, the transport rotary body and the drive rotary body are rotatably supported, and the contact / separation drive means is disposed on the frame side of the support shaft.

Further, in this structure, the transport rotary member and the drive rotary member are rotatably supported by the support shaft projecting from the frame in parallel with the axial direction of the transport roller, and the support shaft is on the frame side. Since the contact / separation drive means is provided in the clutch unit, the clutch unit can be easily configured.

According to a seventh aspect of the present invention, there is provided the conveying device according to any one of the fourth to sixth aspects, wherein the contact / separation drive means urges the conveying rotary body and the driving rotary body in directions away from each other. Separation urging means, a pressing lever having one end pivotally supported, and an intermediate part provided with a pressing portion for pressing the transport rotating body and the drive rotating body in the direction of joining each other, and the pressing lever. It has a pressing drive unit for swinging the pressing lever via the other end of the lever.

In this structure, the separating and urging means urges the conveying rotary body and the driving rotary body in directions in which they are separated from each other, so that the driving force from the driving rotary body to the conveying rotary body is increased. Transmission is reliably released, and the other end of the pressing lever whose one end is swingably supported is pressed by the pressing drive unit, and the transfer rotary unit and drive rotation are performed by the pressing unit in the middle of the pressing lever. By pressing in the direction in which the body and the body are joined to each other, the pressing force is higher than in the case where the pressing drive unit directly presses, and the coupling force at the time of joining the transport rotary body and the drive rotary body is improved. The transmission of force becomes reliable.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 show a first embodiment.

FIGS. 3 and 4 show a roller conveyor 11 having an accumulation function as a conveying device. The roller conveyor 11 has a frame 12, and the frame 12 conveys the conveyed articles A1, A2, A3. The side frames 13 having a substantially C-shaped cross section are arranged in parallel on both sides intersecting the transport direction F, and the side frames 13 on both sides are integrally connected by a plurality of connecting frames 14 by a plurality of legs not shown. It is installed on the installation surface such as the floor.

Shaft mounting grooves 15 that open upward are formed at equal intervals in the conveying direction F at the inner upper edges of the side frames 13 facing each other, and are mounted between the shaft mounting grooves 15 on both sides. A plurality of transport rollers 16 are arranged in parallel between the side frames 13.

An article to be conveyed by these plural conveying rollers 16.
A transport surface 17 for transporting A1, A2, A3 is formed.
The zone 17 is divided into a plurality of zones S1, S2, S3 ... In the conveyance direction F, and the drive and stop of the conveyance roller 16 are controlled for each zone S1, S2, S3.

Each of the conveying rollers 16 has a shaft 18 whose both ends are engaged with shaft mounting grooves 15 provided in the side frames 13 on both sides in a non-rotating state, and is rotatably supported by the shaft 18. It has a cylindrical roller portion 19 that A plurality of recesses 20 are formed on the circumferential surface on one end side of the roller portion 19, and an endless interlocking belt 21 is stretched between the recesses 20 of the adjacent transport rollers 16, and these interlocking belts 21 are stretched. A plurality of groups of adjacent conveying rollers 16 provided are integrally interlocked and rotated. Each zone
In S1, S2, S3, ..., the transport rollers 16 that rotate integrally are the transport rollers 16 on the upstream side and the transport rollers on the downstream side.
It is divided into two, 16 groups.

In each of the zones S1, S2, S3 ..., a part of the conveyed object detecting means for detecting the conveyed objects A1, A2, A3 between the upstream side conveying roller 16 group and the downstream side conveying roller 16 group. Is arranged. The sensing roller 22 has a shaft body 23 and a roller portion 24 like the transport roller 16, and the shaft body 23 protruding from both ends of the roller portion 24.
Both ends of are supported by the sensing lever 25.
The sensing lever 25 has a raised position in which the upper surface of the sensing roller 22 projects upward from the conveying surface 17 and a descending position in which the upper surface of the sensing roller 22 protrudes above the conveying surface 17 with a support shaft 26 provided between the side frames 13 on both sides as a fulcrum. It is pivotally supported so as to be swingable between and is biased toward a raised position by a spring (not shown). The sensing roller 22 is pushed down by the conveyed articles A1, A2, A3, and the sensing lever 25 swinging to the lowered position is used to switch the pneumatic pressure switching unit (not shown).
The driving of the transport rollers 16 in the zones S2, S3, ... Immediately before the upstream side is stopped and controlled.

A drive shaft 27 is arranged below the one end side of the conveying roller 16 along the side frame 13 on one side.
27 is a plurality of bearing parts attached to each connecting frame 14.
It is rotatably supported by 28 and is rotationally driven by a drive source such as a motor (not shown).

A drive shaft 27 is provided at one end of one of the transport rollers 16a of each of the transport rollers 16 in each zone S1, S2, S3.
A clutch unit 31 that transmits and releases the driving force from the carrier roller 16a is incorporated.

Next, as shown in FIGS. 1 and 2, the conveying roller 16 in which the clutch unit 31 is incorporated at one end side.
The dimension a of the roller portion 19 on the one end side in the axial direction is formed to be shorter than that of the other conveying rollers 16, and bearings 32 rotatably supported by the shaft body 18 are attached to both ends thereof. The bearing 32 is an inner ring 33 fixed to the shaft body 18,
It has an outer ring 34 fixed to the roller portion 19 and a plurality of balls 35 rotatably housed between the inner ring 33 and the outer ring 34. An annular transmission plate portion 36 is formed at the outer end of the outer ring 34 of the bearing 32 on the one end side so as to be bent in the outer diameter direction in a substantially L-shaped cross section.

The clutch unit 31 includes a drive transmission sheave 37 as a rotating body coaxially and rotatably supported side by side in the axial direction of the conveyance roller 16a, and the drive transmission sheave 37 with respect to the conveyance roller 16a. It has a contact / separation drive means 38 for contacting and separating in the axial direction.

The drive transmission sheave 37 is formed in a cylindrical shape having a recess 39 in the central area of the outer peripheral surface, is slidable in the axial direction with respect to the shaft 18 via the slide portion 40, and this slide portion. It is rotatably supported via a bearing 41 attached to 40.

The drive transmission sheave 37 and the drive shaft 27 are arranged in a vertical positional relationship, and the drive shaft sheave 42 is fixed to the drive shaft 27. The drive shaft sheave 42 and the drive transmission sheave 37 are connected to each other. An endless transmission belt 43 as a transmission means is stretched between them. Therefore, the rotational force of the drive shaft 27 is transmitted to the drive transmission sheave 37 via the drive shaft sheave 42 and the transmission belt 43, and the drive transmission sheave 37 is rotationally driven in the direction corresponding to the transport direction F.

Conveyor roller facing the drive transmission sheave 37
The transmission plate portion 36 of the 16a is configured as a clutch body 44 on the driven side, and the drive transmission sheave 3 facing the conveying roller 16a.
A drive-side clutch body 45 is attached to the end surface of 7, and these clutch bodies 44, 45 are configured to come into surface contact with each other to transmit the driving force. As the clutch body 45, a friction plate having a large friction coefficient on the joint surface in contact with the clutch body 44 is used. By using a friction plate having a large friction coefficient also on the clutch body 44 side, the coupling force when the clutch bodies 44 and 45 are in surface contact with each other can be increased.

Further, the contact / separation drive means 38 has a structure for releasing the drive transmission, and the bearing 32 of the conveying roller 16a.
A compression coil spring 46 is provided between the inner ring 33 and the slide portion 40 of the drive transmission sheave 37 as a separating and urging means that is elastically deformed in a compressed state, and the drive transmission is performed by the compression coil spring 46. The sheave 37 is urged in the direction away from the transport roller 16a.

The contact / separation drive means 38 is a mounting member mounted on the side frame 13 as a structure for transmitting drive.
47, a pressing lever pivotally supported by this mounting member 47
48, and a pressing drive unit 49 that is mounted on the side frame 13 below the mounting member 47 and that swings the pressing lever 48.

The mounting member 47 is formed with supporting piece portions 50 on both sides of the shaft 18 which are spaced apart from each other, and the supporting piece portions 50 on both sides are connected by a connecting piece portion 51. A mounting piece portion 52 is provided so as to project from the outside of the support piece portion 50. The bolts 53 are inserted into the mounting pieces 52 from the outside of the side frame 13 and the nuts 54 are screwed and tightened at the tips of the bolts 53, whereby the mounting member 47 is attached to the side frame 13. It is fixed to.

The upper end side of the pressing lever 48 is arranged between the support pieces 50 on both sides of the mounting member 47, and the shaft body 18 is inserted through the upper end side of the pressing lever 48 in order to prevent interference with the shaft body 18. Is formed with a forked portion 56 having a substantially U-shaped cross section, and both tip ends of the forked portion 56 above the shaft body 18 are mounting members.
A support shaft 57 is swingably supported by a support piece portion 50 on both sides of 47. The lower end side of the pressing lever 48 is extended to a region below the mounting member 47 and facing the side surface of the pressing drive portion 49. At the base end of the bifurcated portion 56 below the shaft 18 which is an intermediate portion of the pressing lever 48, a pressing portion that abuts the slide portion 40 of the drive transmission sheave 37 and presses it toward the transport roller 16a. 58 is formed to project.

The pressing drive unit 49 uses a pneumatic actuator, has a main body 61 attached to the side frame 13, and a diaphragm 59 is attached to the side surface of the main body 61. The diaphragm 59 is inside the body 61.
An air pressure chamber (not shown) is formed to face the main body 61, and a connection pipe 60 communicating with the air pressure chamber and connected to an air tube connected to an air pressure switching unit (not shown) is connected.
Is projected. Then, by supplying air pressure from the air pressure switching unit, as shown in FIG.
59 expands and protrudes from the main body 61, and presses the drive transmission sheave 37 toward the conveying roller 16a via the pressing portion 58 of the pressing lever 48, that is, in the clutch connecting direction,
Further, as shown in FIG. 1, by exhausting air at the air pressure switching section, the diaphragm 59 contracts and retracts into the main body section 61, and the pressing of the pressing lever 48 is released.

One air pressure switching unit is used for each zone S1, S2, S3 ... And each air pressure switching unit is used for each zone.
.. are connected to the press drive portions 49 of the plurality of clutch units 31 in S1, S2, S3 ... And are installed at positions operated by the sensing levers 25 in the downstream zones S1, S2, S3. Then, the sensing roller 22 rises and the sensing lever 25 swings to the raised position, whereby the air pressure switching section is switched, and air pressure is supplied to the pressing drive section 49 of the upstream side zones S1, S2, S3 ,. Also, the sensing roller
22 moves down and the sensing lever 25 swings to the lowered position, the air pressure switching section is switched, and the pressure drive section 49 of the upstream zones S1, S2, S3 ... Is exhausted. In addition,
The air pressure switching unit for the zone S1 is operated by the mechanism of the downstream side of the zone S1 depending on the transport condition of the transported articles A1, A2, A3.

Next, the roller conveyor of the first embodiment
The transport operation by 11 will be described.

In a state where the articles A1, A2, A3 have not been conveyed yet, the sensing roller 22 of each zone S1, S2, S3 ...
Rises, and air pressure is supplied from the air pressure switching section for each zone S1, S2, S3 ... To the pressing drive section 49 of each clutch unit 31 of each zone S1, S2, S3 ..., Each zone S1, S2, S3 ... Each of the clutch units 31 is in a state of transmitting the driving force from the drive shaft 27, that is, in the clutch connection state, and the respective zones S1, S2, S3
The carrying roller 16 inside is rotating.

That is, as shown in FIG. 2, by supplying air pressure from the air pressure switching unit to the pressing drive unit 49, the diaphragm 59 of the pressing drive unit 49 expands and swings the pressing lever 48. The pushing portion 58 of the push 48 pushes the drive transmission sheave 37 toward the conveyance roller 16a, and the clutch body 45 of the drive transmission sheave 37 is moved to the clutch body 44 of the conveyance roller 16a.
To make the clutch connection. Since the drive force of the drive shaft 27 is transmitted through the transmission belt 43 and the drive transmission sheave 37 is always rotating, the drive transmission sheave 37 is integrally conveyed with the drive transmission sheave 37 by the surface contact of the clutch bodies 44 and 45.
As the 16a rotates, a group of conveying rollers 16 interlocked with the rotating roller 16a via the interlocking belt 21 integrally rotate.

Then, the articles A1, A2, A3 sequentially conveyed from the upstream side of the roller conveyor 11 are placed on the rotating conveyance roller 16, and the zones S3, S2, S1 are sequentially conveyed in the conveyance direction F. Transport.

Further, when the mechanism installed on the downstream side of the zone S1 is not in a condition to receive the conveyed article A1 and the pressure drive section 49 of the clutch unit 31 of the zone S1 is exhausted by the air pressure switching section for the zone S1. The clutch unit 31 in the zone S1 is in the state of releasing the transmission of the driving force from the drive shaft 27, that is, in the clutch disengaged state, and the transport roller 16 in the zone S1 is stopped.

That is, as shown in FIG. 1, by exhausting the pressure drive unit 49 by the air pressure switching unit, the diaphragm 59 of the pressure drive unit 49 contracts to release the pressure of the pressure lever 48 and the compression coil spring 46. Drive transmission sheave by biasing
The clutch body 45 of 37 is disengaged from the clutch body 44 of the transport roller 16a to bring the transmission of the driving force into a disengaged state, and the transport roller 16 group in the zone S1 stops integrally.

Therefore, the conveyed article A1 fed from the zone S2 into the zone S1 moves to an intermediate position in the zone S1 by inertia, but stops in this zone S1.

The sensing roller 22 is pushed down by the conveyed article A1 stopped in the zone S1, the pneumatic pressure switching section for the zone S2 is switched and the pressing drive section 49 of the clutch unit 31 in the zone S2 is exhausted, and As described above, the clutch unit 31 in the zone S2 is switched to the clutch disengaged state, and the transport roller 16 in the zone S2 stops. Therefore, the transported goods
The conveyed product A2, which is subsequently conveyed from A1 and is sent from the zone S3 into the zone S2, stops in the zone S2.

By pressing down the sensing roller 22 with the conveyed article A2 stopped in the zone S2 and switching the pneumatic pressure switching section for the zone S3 to exhaust the pressure drive section 49 of the clutch unit 31 in the zone S3, As mentioned above, the zone
The clutch unit 31 of S3 is switched to the clutch disengaged state, and the transport roller 16 in the zone S3 stops. for that reason,
Zone is conveyed from upstream side after being conveyed after conveyed item A2
The conveyed product A3 fed into S3 stops in zone S3.

Further, it becomes possible to receive the article A1 in the mechanism installed on the downstream side of the zone S1, and the air pressure switching section for the zone S1 is switched to operate the pressing drive section 49 of the clutch unit 31 of the zone S1. By supplying air pressure,
As described above, the clutch unit 31 of the zone S1 is switched to the clutch connection state, and the transport roller 16 in the zone S1 is
Rotates and conveys the conveyed article A1 stopped in the zone S1 to the downstream side.

The conveyed article A1 is carried out from the zone S1, the pushing down of the sensing roller 22 is released, and the pneumatic pressure switching section for the zone S2 is switched to supply the pneumatic pressure to the pressing drive section 49 of the clutch unit 31 in the zone S2. Thereby, as described above, the clutch unit 31 of the zone S2 is switched to the clutch connection state, the transport roller 16 in the zone S2 rotates, and the transport object A2 stopped in the zone S2 is transported to the downstream side. .

The conveyed article A2 is carried out of the zone S2, the pushing down of the sensing roller 22 is released, the pneumatic pressure switching section for the zone S3 is switched, and the pneumatic pressure is supplied to the pressing drive section 49 of the clutch unit 31 of the zone S3. Thereby, as described above, the clutch unit 31 of the zone S3 is switched to the clutch engaged state, the transport roller 16 in the zone S3 rotates, and the transport object A3 stopped in the zone S3 is transported to the downstream side. .

In this way, the roller conveyor 11 can carry the objects A1, A2, A3 to be conveyed while preventing them from approaching and colliding with each other.

According to the clutch unit 31 used for the roller conveyor 11, the conveying roller 16a and the drive transmission sheave 37 are coaxially supported, and the transmission belt 43 drives the drive shaft 27 to the drive transmission sheave 37. The force is transmitted, and by the contact / separation drive means 38, the conveying roller 16a and the drive transmission sheave 3
By contacting and separating 7 with the axial direction, the driving force can be transmitted to and released from the conveying roller 16a without providing a clutch mechanism on the drive shaft 27, and the end surfaces of the conveying roller 16a and the driving transmission sheave 37 can be connected to each other. Transporting roller for surface contact
Even if a conveying load is applied to the 16a, slippage is unlikely to occur, and the driving force can be reliably transmitted from the drive shaft 27 to the conveying roller 16a.

Moreover, since the clutch bodies 44 and 45, which are in surface contact with each other, are provided on the end surfaces of the conveying roller 16a and the drive transmitting sheave 37 which face each other, the coupling force at the time of joining the conveying roller 16a and the driving transmitting sheave 37. Can be improved, and the driving force can be reliably transmitted.

Further, the compression coil spring 46 biases the drive transmission sheave 37 in the direction away from the conveyance roller 16a, so that the transmission of the driving force from the drive transmission sheave 37 to the conveyance roller 16a is ensured. Further, the other end of the pressing lever 48 which can be released and one end of which is pivotally supported is pressed by the pressing drive unit 49, and the drive transmission sheave 37 is conveyed by the pressing unit 58 in the middle of the pressing lever 48. By pressing against the 16a, the pressing force is higher than when pressing directly with the pressing drive unit 49, the coupling force at the time of joining the drive transmission sheave 37 and the transport roller 16a can be improved, and the transmission of the driving force is ensured. You can

Next, FIGS. 5 to 9 show a second embodiment.

The same components as those in the first embodiment will be described using the same reference numerals.

FIG. 8 and FIG. 9 show a roller conveyor 11 having an accumulation function as a conveying device. The roller conveyor 11 has a frame 12, and the frame 12 conveys the conveyed articles A1, A2, A3. The side frames 13 having a substantially C-shaped cross section are arranged in parallel on both sides intersecting the transport direction F, and the side frames 13 on both sides are integrally connected by a plurality of connecting frames 14 by a plurality of legs not shown. It is installed on the installation surface such as the floor.

Shaft mounting grooves 15 that open upward are formed at equal intervals in the conveying direction F at the inner upper edges of the side frames 13 on both sides facing each other. A plurality of transport rollers 16 are arranged in parallel between the side frames 13.

An object to be conveyed by these plural conveying rollers 16.
A transport surface 17 for transporting A1, A2, A3 is formed.
The zone 17 is divided into a plurality of zones S1, S2, S3 ... In the conveyance direction F, and the drive and stop of the conveyance roller 16 are controlled for each zone S1, S2, S3.

Each of the conveying rollers 16 has a shaft 18 having both ends engaged with shaft mounting grooves 15 provided in the side frames 13 on both sides in a non-rotating state, and a shaft 18 rotatably supported by the shaft 18. It has a cylindrical roller portion 19 that A plurality of recesses 20 are formed on the circumferential surface on one end side of the roller portion 19, and an endless interlocking belt 21 is stretched between the recesses 20 of the adjacent transport rollers 16, and these interlocking belts 21 are stretched. A plurality of groups of adjacent conveying rollers 16 provided are integrally interlocked and rotated. Each zone
In S1, S2, S3, ..., the transport rollers 16 that rotate integrally are the transport rollers 16 on the upstream side and the transport rollers on the downstream side.
It is divided into two, 16 groups.

In each of the zones S1, S2, S3 ..., a part of the conveyed object detecting means for detecting the conveyed objects A1, A2, A3 between the upstream side conveying roller 16 group and the downstream side conveying roller 16 group. Is arranged. This sensing roller 22 is supported by the sensing lever 25, as in the first embodiment, and is connected to the upstream side zones S1, S2,
The air pressure switching unit (not shown) for S3 ... is switched.

A drive shaft 27 is arranged below one end of the conveying roller 16 along the side frame 13 on one side.
27 is a plurality of bearing parts attached to each connecting frame 14.
It is rotatably supported by 28 and is rotationally driven by a drive source such as a motor (not shown).

Then, in the side frame 13 on one side,
A clutch unit 71 that transmits and releases the driving force from the drive shaft 27 to the transport rollers 16 is disposed between each group of transport rollers 16 in each zone S1, S2, S3 ... And the drive shaft 27.

Next, as shown in FIG. 5 to FIG. 7, each clutch unit 71 has two adjacent clutch units 71 in each group of conveying rollers 16.
Corresponding between the two drive transmission conveying rollers 16 has a support shaft 72 that is provided substantially vertically from the inner surface of the side frame 13,
A drive transmission sheave as a drive rotating body is attached to the support shaft 72.
73 and a transfer transmission sheave 74 as a transfer rotation body are coaxially and rotatably supported side by side, and a drive transfer sheave 73 and a transfer transfer sheave 74 are provided on the side frame 13 side of the support shaft 72. A contact / separation drive means 75 for contacting / separating in the axial direction is provided.

The drive transmission sheave 73 is formed in a cylindrical shape having a recess 76 in the central area of the outer peripheral surface, and is rotatably supported by the support shaft 72 via a bearing 77.
The drive transmission sheave 73 and the drive shaft 27 are arranged in a vertical positional relationship, and a drive shaft sheave 78 is fixed to the drive shaft 27. The drive shaft sheave 78 is driven between the drive transmission sheave 73 and the drive transmission sheave 73. An endless transmission belt 79 as a transmission means is stretched. Therefore, the rotational force of the drive shaft 27 is transmitted to the drive transmission sheave 73 via the drive shaft sheave 78 and the transmission belt 79, and the drive transmission sheave 73 is rotationally driven.

The transfer sheave 74 for transportation is formed in a cylindrical shape having a plurality of recesses 80 in the central region of the outer peripheral surface, and has a support shaft.
It is supported so as to be slidable in the axial direction with respect to 72 via a slide portion 81, and rotatably via a bearing 82 attached to this slide portion 81. Between the recess 80 of one of the transfer sheaves 74 for transfer and the recess 20 of one of the two transfer rollers 16 for drive transfer, and the recess 80 of the other transfer sheave 74 for transfer. An endless transfer belt 83 as a transfer means for transfer is stretched between the recess 20 of the other transfer roller 16 and the transfer belt 83.

A transfer transmission sheave 74, a drive transmission sheave 73, and a fixing collar 84 that comes into contact with a bearing 77 of the drive transmission sheave 73 are sequentially installed in the support shaft 72, and a fixing collar is provided at the tip of the support shaft 72. A stopper 85 such as a bolt for fixing 84 is fixed. Therefore, the fixing collar 84
The stopper 85 restricts the movement of the drive transmission sheave 73 toward the tip of the support shaft 72.

Drive transmission sheave 73 and conveyance transmission sheave 74
Clutch bodies 86 and 87 that are in surface contact with each other and transmit the driving force are attached to the surfaces facing each other. For these clutch bodies 86 and 87, annular friction plates whose joint surfaces have a large friction coefficient are used.

Further, the contact / separation drive means 75 is a structure for releasing the drive transmission, and is elastically compressed between the inner ring of the bearing 77 of the drive transmission sheave 73 and the slide portion 81 of the transfer transmission sheave 74. It has a compression coil spring 88 as a separating and urging means that is deformed and arranged.
The drive transmission sheave 73 and the transfer transmission sheave 74 are urged in a direction away from each other.

The contact / separation drive means 75 has a structure for transmitting the drive, and is a mounting member 89 mounted on the side frame 13 on one side of the support shaft 72, and a shaft swingable in a substantially horizontal direction on the mounting member 89. It has a pushing lever 90 supported and a pushing drive portion 91 attached to the side frame 13 on the other side of the support shaft 72 to swing the pushing lever 90.

One end of the pressing lever 90 is pivotally supported on the mounting member 89 by a vertical support shaft 92 so as to be swingable in a substantially horizontal direction. The other end of the pressing lever 90 extends to a region facing the pressing drive unit 91. A pressing portion 93 that contacts the slide portion 81 of the transfer transmission sheave 74 and presses the drive transmission sheave 73 toward the drive transmission sheave 73 is formed in the middle of the pressing lever 90.

The pressing drive unit 91 uses a pneumatic actuator, has a main body 94 attached to the side frame 13, and a diaphragm 95 is attached to the side surface of the main body 94. Diaphragm 95 inside the body 94
A connecting pipe 96 is formed in which a not-shown air pressure chamber is formed, and an air tube communicating with the air pressure chamber and connected to an air pressure switching portion not shown is connected to the main body portion 94.
Is projected. Then, by supplying air pressure from the air pressure switching unit, as shown in FIG.
95 expands and protrudes from the main body portion 94, and via the pressing portion 93 of the pressing lever 90, the transfer transmission sheave 74 and the drive transmission sheave 73.
By pressing and in the direction in which they are joined to each other, that is, in the clutch connecting direction, and as shown in FIG. 5, the air is switched by the air pressure switching portion, whereby the diaphragm 95 contracts and retracts into the main body portion 94, and Release the pressure.

One air pressure switching unit is used for each zone S1, S2, S3 ... And each air pressure switching unit is used for each zone.
.. are connected to the pressing drive portions 91 of the plurality of clutch units 71 in S1, S2, S3 ... And are installed at positions operated by the sensing levers 25 in the downstream zones S1, S2, S3. Then, the sensing roller 22 rises and the sensing lever 25 swings to the raised position, so that the air pressure switching portion is switched and air pressure is supplied to the pressing drive portion 91 of the upstream side zones S1, S2, S3. Also, the sensing roller
22 moves down and the sensing lever 25 swings to the lowered position, the air pressure switching section is switched, and the pressure drive section 91 of the upstream zones S1, S2, S3 ... Is exhausted. In addition,
The air pressure switching unit for the zone S1 is operated by the mechanism of the downstream side of the zone S1 depending on the transport condition of the transported articles A1, A2, A3.

Next, the roller conveyor of the second embodiment
The transport operation by 11 will be described.

In a state in which the articles A1, A2, A3 have not been conveyed yet, the sensing rollers 22 of the zones S1, S2, S3 ...
Rises, and air pressure is supplied from the air pressure switching portion for each zone S1, S2, S3 ... To the pressing drive portion 91 of each clutch unit 71 of each zone S1, S2, S3 ..., Each zone S1, S2, S3 ... Each of the clutch units 71 is in a state in which the driving force from the drive shaft 27 is transmitted, that is, in the clutch connected state,
The carrying roller 16 inside is rotating.

That is, as shown in FIG. 6, by supplying air pressure from the air pressure switching unit to the pressing drive unit 91, the diaphragm 95 of the pressing drive unit 91 expands and swings the pressing lever 90. The pressing portion 93 of 90 presses the transfer transmission sheave 74 and the drive transmission sheave 73 in the direction in which they are joined, and the clutch body 87 of the transfer transmission sheave 74 and the clutch body 86 of the drive transmission sheave 73 face each other. Contact them and put them in the clutch connected state. Drive transmission sheave 73 is drive shaft 27
Since the driving force is transmitted through the transmission belt 79 and is constantly rotating, the transfer transmission sheave 74 rotates integrally with the drive transmission sheave 73 due to the surface contact of the clutch bodies 86 and 87, and The two transport rollers 16 for transmitting the drive are rotated from the transmission sheave 74 via the transmission belt 83, and at the same time, a group of the transport rollers 16 interlocked from each of the transport rollers 16 via the interlocking belt 21 is rotated.

Then, the articles A1, A2, and A3 sequentially conveyed from the upstream side of the roller conveyor 11 are placed on the rotating conveyance roller 16, and the zones S3, S2, and S1 are sequentially arranged in the conveyance direction F. Transport.

Further, when the mechanism installed on the downstream side of the zone S1 is not in a condition for receiving the conveyed article A1 and the pressure driving section 91 of the clutch unit 71 of the zone S1 is exhausted by the air pressure switching section for the zone S1. The clutch unit 71 in the zone S1 is in a state of releasing the transmission of the driving force from the drive shaft 27, that is, in the clutch disengaged state, and the transport roller 16 in the zone S1 is stopped.

That is, as shown in FIG. 5, by exhausting the pressure drive unit 91 by the air pressure switching unit, the diaphragm 95 of the pressure drive unit 91 contracts to release the pressure of the pressure lever 90 and the compression coil spring 88. Drive transmission sheave by biasing
73 clutch body 86 and transport transmission sheave 74 clutch body 87
The clutches are disengaged from each other to release the transmission of the driving force, and the group of transport rollers 16 in the zone S1 is stopped integrally.

Therefore, the conveyed article A1 sent from the zone S2 into the zone S1 moves to an intermediate position in the zone S1 by inertia, but stops in this zone S1.

The sensing roller 22 is pushed down by the conveyed article A1 stopped in the zone S1, the pneumatic pressure switching section for the zone S2 is switched, and the pressing drive section 91 of the clutch unit 71 in the zone S2 is exhausted. As described above, the clutch unit 31 in the zone S2 is switched to the clutch disengaged state, and the transport roller 16 in the zone S2 stops. Therefore, the transported goods
The conveyed product A2, which is subsequently conveyed from A1 and is sent from the zone S3 into the zone S2, stops in the zone S2.

By depressing the sensing roller 22 with the conveyed article A2 stopped in the zone S2 and switching the air pressure switching section for the zone S3 to exhaust the pressure drive section 91 of the clutch unit 71 in the zone S3, As mentioned above, the zone
The clutch unit 71 of S3 is switched to the clutch disengaged state, and the transport roller 16 in the zone S3 is stopped. for that reason,
Zone is conveyed from upstream side after being conveyed after conveyed item A2
The conveyed product A3 fed into S3 stops in zone S3.

Further, it becomes possible to receive the conveyed article A1 in the mechanism installed on the downstream side of the zone S1, and the air pressure switching section for the zone S1 is switched to operate the pressing drive section 91 of the clutch unit 71 in the zone S1. By supplying air pressure,
As described above, the clutch unit 71 in the zone S1 is switched to the clutch engaged state, and the transport roller 16 in the zone S1 is
Rotates and conveys the conveyed article A1 stopped in the zone S1 to the downstream side.

The conveyed article A1 is carried out of the zone S1, the pushing down of the sensing roller 22 is released, and the pneumatic pressure switching section for the zone S2 is switched to supply the pneumatic pressure to the pressing drive section 91 of the clutch unit 71 of the zone S2. As a result, as described above, the clutch unit 71 of the zone S2 is switched to the clutch connection state, the transport roller 16 in the zone S2 rotates, and the transport object A2 stopped in the zone S2 is transported to the downstream side. .

The conveyed article A2 is carried out of the zone S2, the pushing down of the sensing roller 22 is released, the pneumatic pressure switching section for the zone S3 is switched, and the pneumatic pressure is supplied to the pressing drive section 91 of the clutch unit 71 of the zone S3. As a result, as described above, the clutch unit 71 of the zone S3 is switched to the clutch connection state, the transport roller 16 in the zone S3 rotates, and the transport object A3 stopped in the zone S3 is transported to the downstream side. .

In this way, the roller conveyor 11 can carry the objects to be conveyed A1, A2, A3 while preventing them from approaching or colliding with each other.

According to the clutch unit 31 used for the roller conveyor 11, the clutch unit 71 is arranged between the conveying roller 16 and the drive shaft 27, and the clutch unit 71 receives the driving force from the drive shaft 27. The driving transmission sheave 73 for transmitting the driving force and the transportation transmission sheave 74 for transmitting the driving force to the transportation roller 16 are coaxially supported, and the contact / separation drive means 75 connects the driving transmission sheave 73 and the transportation transmission sheave 74. By connecting and disconnecting in the axial direction, the driving force can be transmitted to and released from the conveyance roller 16 without providing the clutch unit 71 on the drive shaft 27, and the drive transmission sheave 73 and the conveyance transmission sheave 73 can be transmitted.
Even if a load is applied to the transport roller 16, slip does not easily occur because the end surfaces of the transport roller 16 and the end surface 74 contact each other, and the drive force can be reliably transmitted from the drive shaft 27 to the transport roller 16.

Moreover, since the clutch bodies 86 and 87 that are in surface contact with each other are provided on the end surfaces of the drive transmission sheave 73 and the transfer transmission sheave 74 that face each other, the drive transmission sheave 73 is provided.
It is possible to improve the bonding force when connecting the transfer sheave 74 for transportation,
The drive force can be reliably transmitted.

Further, the transfer sheave for transfer is attached to the support shaft 72 projecting from the frame 12 in parallel with the axial direction of the transfer roller 16.
Since the 74 and the drive transmission sheave 73 are rotatably supported, and the contact / separation drive means 75 is arranged on the frame 12 side of the support shaft 72, the clutch unit 71 can be easily configured.

Further, by urging the transfer transmission sheave 74 and the drive transmission sheave 73 in the direction in which they are separated from each other by the separation urging means, the driving force from the drive transmission sheave 73 to the transfer transmission sheave 74 is increased. Transmission can be reliably released, and the other end of the pressing lever 90 whose one end is swingably supported is pressed by the pressing drive unit 91, and the transfer transfer sheave is carried by the pressing unit 93 in the middle of the pressing lever 90. By pressing the 74 and the drive transmission sheave 73 in the direction in which they are joined to each other, the pressing drive unit 91
The pressing force is higher than in the case of directly pressing with, the coupling force at the time of joining the transfer transmission sheave 74 and the drive transmission sheave 73 can be improved, and the transmission of the drive force can be ensured.

A non-contact type or contact type sensor is used in place of the sensing roller for detecting the conveyance position of the conveyed object, and the air pressure switching section is electrically driven by a solenoid or the like in response to the detection of the sensor. You can also switch.

In addition, the constitution of the carrier device of each embodiment is as follows.
Not limited to the roller conveyor having the accumulation function, the present invention can be applied to other roller conveyors including, for example, a roller conveyor having a cutting function for cutting out conveyed objects one by one, and similar effects can be obtained.

Further, the present invention can be applied not only to the roller conveyor but also to various kinds of conveying devices using conveying rollers, and the same effects can be obtained.

[0099]

According to the conveying apparatus of the first aspect, the conveying roller and the rotating body are coaxially supported, the driving force is transmitted from the drive shaft to the rotating body by the transmitting means, and the conveying roller is conveyed by the contacting / separating driving means. By moving the roller and rotor in the axial direction, the driving force can be transmitted to and released from the conveyor roller without providing a clutch mechanism on the drive shaft, and the end surfaces of the conveyor roller and rotor are in surface contact. Therefore, even if the carrying load is applied to the carrying roller, slippage does not easily occur, and the driving force can be reliably transmitted from the drive shaft to the carrying roller.

According to the transport device of the second aspect, in addition to the effect of the transport device of the first aspect, since the end faces of the transport roller and the rotating body which face each other are provided with the clutch bodies that are in surface contact with each other, the transport is performed. The joining force at the time of joining the roller and the rotating body can be improved, and the driving force can be reliably transmitted.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect of the present invention, the separating / biasing means urges the rotating body in a direction in which the rotating body is separated from the conveying roller. By this, the transmission of the driving force from the rotating body to the transport roller can be surely released, and the other end of the pressing lever whose one end is swingably supported is pressed by the pressing drive unit, and the intermediate portion of the pressing lever is pressed. By pressing the rotating body against the conveying roller by the pressing portion of, the pressing force is higher than in the case of directly pressing by the pressing drive portion, the coupling force at the time of joining the rotating body and the conveying roller can be improved, and the driving force can be improved. Transmission can be ensured.

According to the fourth aspect of the present invention, the clutch unit is disposed between the conveying roller and the drive shaft, and the clutch unit is provided with the drive rotating body for transmitting the driving force from the drive shaft. By coaxially supporting a transporting rotary body that transmits a driving force to the roller, and by moving the drive rotary body and the transport rotary body in the axial direction by the contact / separation drive means,
The drive force can be transmitted to and released from the transport roller without providing a clutch unit on the drive shaft, and the transport roller is subject to a transport load because the end faces of the drive rotating body and the transport rotating body are in surface contact with each other. Also, slippage is unlikely to occur, and the drive force can be reliably transmitted from the drive shaft to the transport roller.

According to the transfer device of the fifth aspect, in addition to the effect of the transfer device of the fourth aspect, a clutch body that makes surface contact with each other is provided at the end faces of the transport rotary member and the drive rotary member that face each other. Since it is provided, the coupling force at the time of joining the transport rotary body and the drive rotary body can be improved, and the transmission of the drive force can be ensured.

According to the sixth aspect of the present invention, in addition to the effects of the fourth or fifth aspect of the present invention, in addition to the effects of the fourth or fifth aspect of the present invention, the support shaft projecting from the frame in parallel with the axial direction of the carry roller is used for carrying rotation. Since the body and the drive rotating body are rotatably supported and the contact / separation drive means is arranged on the frame side of the support shaft, the clutch unit can be simply constructed.

According to the transport device of the seventh aspect, in addition to the effect of the transport device of any one of the fourth to sixth aspects, the displacing biasing means separates the transport rotator and the drive rotator from each other. By biasing in the direction, it is possible to reliably release the transmission of the driving force from the driving rotary body to the transport rotary body,
A direction in which the other end of the pressing lever whose one end is swingably supported is pressed by the pressing drive unit, and the conveyance rotating body and the driving rotating body are joined to each other by the pressing portion in the middle of the pressing lever. The pressing force is higher than that in the case of directly pressing by the pressing drive unit, and the coupling force at the time of joining the transport rotating body and the drive rotating body can be improved and the transmission of the driving force can be ensured. .

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a clutch unit in a clutch disengaged state showing a first embodiment of a carrying device of the present invention.

FIG. 2 is a cross-sectional view of the above clutch unit in a clutch connected state.

FIG. 3 is a plan view of the same carrying device.

FIG. 4 is a cross-sectional view of the same carrying device.

FIG. 5 is a cross-sectional view of a clutch unit according to a second embodiment of the present invention when viewed from the plane in a clutch disengaged state.

FIG. 6 is a cross-sectional view of the same clutch unit as seen from a plane direction in a clutch connected state.

FIG. 7 is a cross-sectional view of the same clutch unit as seen from the inner side surface direction.

FIG. 8 is a plan view of the same carrying device.

FIG. 9 is a cross-sectional view of the same carrier device.

[Explanation of symbols]

11 Roller conveyor as a conveyor 12 frames 16, 16a Transport rollers 27 Drive shaft 37 Drive transmission sheave as a rotating body 38 Contact / separation drive means 43 Transmission belt as transmission means 44, 45 clutch body 46 Compression coil spring as separating and urging means 48 Push lever 49 Press drive unit 58 Pressing part 71 Clutch unit 72 Support shaft 73 Drive transmission sheave as drive rotating body 74 Transport transmission sheave as a transport rotating body 75 Contact / separation drive means 79 Transmission belt as drive transmission means 83 Transmission belt as transmission means for transportation 86,87 clutch body 88 Compression coil spring as a separating and urging means 90 Push lever 91 Press drive unit 93 Pressing part

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Toshihide Shimizu             900 Okouchi, Noguchi-cho, Kakogawa-shi, Hyogo             -Kura Transport Co., Ltd. F term (reference) 3F033 BB01 BC03 BC06 BC07

Claims (7)

[Claims] 1. A frame, a transport roller rotatably supported by the frame, a rotary body coaxially and rotatably supported side by side in the axial direction of the transport roller, and a drive shaft rotatably driven. And a transmission unit that transmits a driving force from the drive shaft to the rotary body, and a contact / separation drive unit that makes the transport roller and the rotary body contact and separate in the axial direction. 2. The conveying device according to claim 1, wherein the conveying roller and the rotating body are provided with clutch bodies which are in surface-contact with each other on opposite end surfaces of the conveying roller and the rotating body. 3. The contact / separation drive means is a separating / biasing means for urging the rotating body in a direction separating from the conveying roller, one end of which is pivotally supported and the rotating body is conveyed to an intermediate portion. A pressing lever provided with a pressing portion that presses toward the roller,
The transport device according to claim 1 or 2, further comprising: a pressing drive unit that swings the pressing lever via the other end of the pressing lever. 4. A frame, a transport roller rotatably supported by the frame, a drive shaft that is driven to rotate, and a drive shaft that is disposed between the transport roller and the drive shaft and is rotatable about the frame. A transporting rotary body that is axially supported, a drive rotary body that is coaxially and rotatably supported side by side in the axial direction of the transport rotary body, and the transport rotary body and the drive rotary body are connected in the axial direction. A clutch unit having a contact / separation drive means for separating, a drive transmission means for transmitting a drive force from the drive shaft to a drive rotary body, and a transport transmission means for transmitting a drive force from the transport rotary body to a transport roller. And a carrier device. 5. The transport device according to claim 4, wherein clutch bodies that are in surface contact with each other are provided on end surfaces of the transport rotary body and the drive rotary body that face each other. 6. The clutch unit has a support shaft projecting from the frame in parallel with the axial direction of the carrying roller, and the carrying rotating body and the driving rotating body are rotatably supported by the supporting shaft. The transport device according to claim 4 or 5, characterized in that the contact / separation drive means is provided on the frame side of the support shaft. 7. The contact / separation drive means is a separation / urging biasing means for biasing the transport rotary body and the drive rotary body in directions away from each other, one end of which is pivotally supported and an intermediate portion of which is provided. It has a pressing lever provided with a pressing portion for pressing the transport rotating body and the driving rotating body in the direction of joining each other, and a pressing drive portion for swinging the pressing lever via the other end of the pressing lever. The transport device according to any one of claims 4 to 6, characterized in that