JPH0558418A - Driving mechanism for roller conveyer - Google Patents

Abstract

PURPOSE:To largely save manpower for disassembling and assembling work of a conveyer in trouble, if any, by transmitting a rotational driving force of a motor from a rotating shaft on the upper stream side to a rotating shaft on the downstream side through a flexible connecting parts to rotate a roller. CONSTITUTION:When rotational driving force is transmitted to the first rotating shaft 21 from a motor M, the shaft end 21a of the rotating shaft 21 and the shaft end 21a of the second rotating shaft 21 are connected by a roughly U-shaped flexible connecting parts 22 which is formed by bending a spring into roughly 180 degree to form closed end K'. Therefore, the rotation of the first rotating shaft 21 is transmitted to the second rotating shaft 21 by the torsion and return of the flexible connecting parts 22. Besides, because the second rotating shaft 21 is disposed roughly parallel to the first rotating shaft 21, the rotating shafts 21, 21 are rotated in a direction where they face each other. Then the rotation of the second rotational shaft 21 is transmitted to the third rotating shaft 21 through the flexible connecting parts 22, and then the rotation is transmitted to the subsequent rotating shaft 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller conveyor drive mechanism which is optimal for transmitting the rotational driving force from a motor as a drive source to a rotary shaft and a roller in a path changing conveyor, a spiral conveyor, or the like.

[0002]

2. Description of the Related Art Conventionally, as a conveyor for conveying articles, there is, for example, a roller conveyor.

Among the roller conveyors, there is a so-called free conveyor in which an article cannot be conveyed without an inclination in order to convey the article. However, this conveyor changes the inclination angle slowly and rapidly. There is an inconvenience that the speed cannot be surely controlled other than controlling the moving speed.

Further, a motor is adopted as a drive source for the roller conveyor, and a belt or chain is installed on the lower surface of the rotary shaft mounted on the frame and the roller supported by the rotary shaft. There has been a type in which an article is conveyed by rotating a rotary shaft and a roller via a power transmission component such as a pulley and a sprocket, and the conveyance speed of the article is controlled by rotation of a motor.

By the way, as a conveyor, in addition to a linear conveyor for linearly conveying an article, there is a path changing conveyor which is connected to an end of the linear conveyor to change the article conveyance path.

In some of the route changing conveyors, for example, several rotary shafts are rotatably provided at appropriate angles in a plane between substantially opposing frames bent in a plane at about 90 °.

The plane of the route changing conveyor is approximately 90.
A drive mechanism that drives several rotating shafts that are rotatably mounted at an appropriate angle on a plane between substantially opposing frames that are bent at a time may have different pulleys and sprockets attached to each rotating shaft, or The distance between the pulley and sprocket mounting position is different from the drive source mounting position, the length of the power transmission belt is different, and the belt is twisted. Can't be shared as it is.

Therefore, a motor separate from the motor of the linear conveyor is provided as a drive source of the route changing conveyor, and the rotational driving force of this motor is passively passed through power transmission parts such as belts, chains, pulleys, and sprockets. The rotary shaft and the roller, which are erected at a proper angle between the planes, are bent and rotated at a proper angle between the planes, for example, approximately 90 ° and are arranged to face each other.

[0009]

The drive mechanism of the conventional path changing conveyor described above has a rotating shaft rotatably installed on a bent frame and a lower surface of a roller supported by the rotating shaft along the frame. Since power transmission parts such as belts, chains, pulleys, and sprockets are arranged, when replacing and replenishing power transmission parts such as belts in the event of a failure, first rotate the rotating shaft from the frame for each roller,
They had to remove and disassemble and assemble power transmission parts such as belts and chains.

However, the work of disassembling and assembling the power transmission components in this drive mechanism requires time and effort even by a professional engineer, and the replacement and replenishment of the components is not easy.

Further, the frame is formed by being bent in a plane at an angle of approximately 90 ° so as to substantially face each other with a constant curvature, and the rotary shaft is assembled to the frame at a proper angle in the plane and the rotary shaft is attached to the frame. Since the structure is rotatably supported, the manufacturing accuracy and mounting accuracy of the parts such as the frame and the rotating shaft must be precise, which requires time and effort for manufacturing and assembling, resulting in high cost.

Further, the inspection and inspection of the conveyor at regular intervals are not easy because the power transmission parts that need to be replaced due to mechanical fatigue etc. are installed in places such as the lower surface of the rotating shaft and the rollers that are hard to see. There wasn't.

The present invention has been made in view of the above-mentioned points, and the disassembling and assembling work at the time of failure of a conveyor is largely labor-saving so as to be limited to a necessary portion, and a power transmission component can be replaced even if the manufacturing precision of the component is not high. The aim is to make it possible for unskilled personnel to easily and reliably perform replenishment work, simplify the maintenance and inspection work efficiency, and make replacement parts easily procurable at low cost. To do.

[0014]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a motor as a drive source provided on the upstream side of a conveyor and a desired motor. A frame that is arranged to face each other with a curvature, a number of rotating shafts that are installed between the frames at an appropriate angle between the frames, and a shaft that connects the upstream and downstream shaft ends of the rotating shaft to each other at an outer portion of the frame. 180
A substantially U-shaped flexible connecting part bent at an angle of ° and a roller supported by a predetermined rotating shaft, and the rotational driving force of the motor is made to flow downstream from the upstream rotating shaft via the flexible connecting part. The means of rotating the roller by transmitting to the rotating shaft on the side was adopted.

[0015]

When a motor as a drive source is driven to rotate, several rotary shafts mounted on a frame provided to face each other with a desired curvature have their upstream and downstream shaft ends with respect to each other. Approximately U bent at approximately 180 degrees in the outer part
Since they are connected via the V-shaped flexible connecting component, the rotating shaft is sequentially rotated from the upstream side to the downstream side. For this reason, the roller supported by the rotating shaft rotates, so that the article placed on the roller is conveyed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A case in which the first embodiment of the present invention is applied to a route changing conveyor will be described below as an embodiment with reference to FIGS. In FIGS. 1 and 2, reference numerals 1 and 1'show a desired curvature R between the linear conveyors 2A and 2B arranged substantially at right angles.
1 and R2 are frames which are substantially opposed to each other by being bent at an angle of approximately 90 ° in a plane. The frames 1 and 1'are, for example, bent from a thin metal plate into a substantially U-shaped cross section and have a height H thereof. Is lower than the conventional frame and is formed thin as shown in FIG.

3A, 3B, 3C, 3D, 3E, 3F, 3
Reference numeral G denotes several rotary shafts that are movably and rotatably installed between the frames 1 and 1 ′ at an appropriate angle α in a plane, and these rotary shafts 3A, 3B, 3C, 3D, 3E, 3F,
3G has, for example, a wear-resistant material such as stainless steel and has substantially the same length and the same diameter, for example, a diameter of about 6.35 mm.
A round bar of about (1/4 inch) is used.

In FIGS. 1, 2, and 3, reference numeral 4 denotes a roller. In this embodiment, the roller 4 is formed of, for example, plastic into a substantially cylindrical shape in order to contribute to the conveyance of the article F. Is used, and the rotating shafts 3A, 3C, 3E, 3G arranged in odd numbers are loosely inserted in the mounting holes 4a.

Further, the rotating shafts 3B, 3 arranged at even numbers
Although the roller 4 is not loosely inserted into D and 3F, or if necessary, a roller having a smaller diameter than the roller 4 is loosely inserted and does not contribute to the conveyance of the article F, but the article F is not dropped. It may be prevented.

As shown in FIGS. 1 and 2, in this embodiment, the roller 4 loosely inserted in the rotary shafts 3A, 3C, 3E, 3G is divided into a plurality of rollers 4 in the axial direction. By using the rollers 4, the rollers 4 are frictionally engaged with each other except that an external force is applied to the adjacent rollers 4, and they are integrally rotated.

When the articles F are conveyed in multiple rows on the same conveyor, the so-called slip torque type conveyor is of a type that can convey the articles F in a desired row and stop the other articles F. However, the roller 4 is not necessarily limited to this, and is not divided into several parts in the axial direction, and may be a long cylindrical or conical cylindrical roller 4, or Is not a slip torque type conveyor but roller 4
By fitting the rotary shaft to the rotary shafts 3A, 3C, 3
It may be a conveyor in which E, 3G and the roller 4 rotate integrally.

As shown in FIGS. 1 to 5, reference numeral 5 denotes a frame 1 which substantially opposes the left and right shaft ends 3a, 3a; 3b, 3b of the rotary shafts 3A, 3B, 3C, 3D, 3E, 3F, 3G. , 1 ′ is a flexible connecting part which is used in a substantially U-shaped state in which one spring S is bent at about 180 degrees in order to connect at the outer part of the flexible connecting part 5. In different bent states, the rotary shafts 3A, 3B, 3 are provided in the both ends 5a, 5b.
Left and right shaft ends 3a, 3a of C, 3D, 3E, 3F, 3G;
By inserting and attaching 3b and 3b, the rotating shaft 3
A closed end K is formed at the outer side of the frame 1, 1'which is bent substantially 90 ° in a plane and substantially opposes A, 3B, 3C, 3D, 3E, 3F, 3G.

Here, the closed end K is, as shown in FIGS. 1 and 2, the rotary shafts 3A, 3B, 3C, 3 formed by a flexible connecting part 5 formed by one spring S.
It means that the shaft ends 3a, 3a; 3b, 3b of D, 3E, 3F, 3G are connected and are not in the released state.

Preferably, the winding direction of the spring (single spring) used in the flexible connecting component 5 is the rotating shafts 3A, 3B, 3C, 3D, 3E, 3
The fact that the direction of rotation of F and 3G coincides with that of the rotating shaft 3
A, 3B, 3C, 3D, 3E, 3F, 3G rotation shafts 3A, 3B of the flexible connecting component 5 at the time of rotation transmission.
There is no adverse effect such as rapid rotation due to the load on the 3C, 3D, 3E, 3F, and 3G and the restoration of the spring in the opposite direction.

In this embodiment, the rotary shaft 3
The left and right shaft ends 3a, 3a; 3b, 3b of A, 3B, 3C, 3D, 3E, 3F, 3G are fitted into both end portions 5a, 5b of the flexible connecting component 5 to form a fixing means. Both ends 5 of the flexible connecting component 5 are examples.
rotation shafts 3A, 3B, 3C, 3D, 3E, 3 on a and 5b
The fixing of F and 3G is not limited to this.

That is, as shown in FIG. 4, the rotary shafts 3A, 3B, 3 are attached to both ends 5a, 5b of the flexible connecting part 5.
The left and right shaft ends 3a, 3b of C, 3D, 3E, 3F, 3G are fitted, and the outer periphery of the connecting portion is tightened and fixed by a tightening band 7 that increases the tightening force by screwing a bolt and a nut 6. The mounting may be strengthened.

Further, as shown in FIG. 5, the left and right shaft ends 3a, 3a of the rotating shafts 3A, 3B, 3C, 3D, 3E, 3F, 3G are attached to both ends 5a, 5b of the spring S forming the flexible connecting part 5. 3b, 3b is fitted and the linear member S1 at the end forming the spring S of the flexible connecting component 5 is attached to the rotary shafts 3A, 3B, 3C, 3D, 3E, 3
Grooves 8 provided on shaft ends 3a, 3a of F, 3G; 3b, 3b
It may be inserted inside to prevent slippage of the flexible connecting component 5 with respect to the rotating shaft during rotation.

M is, for example, a single motor as a drive source provided on the upstream side of the first linear conveyor 2A.

Numerals 9 and 10 transmit the rotational driving force of the motor M to the rotary shaft 21 on the most upstream side of the linear conveyor 2A and sequentially transmit them to the rotary shaft 21 on the downstream side. The motor shaft m and the linear conveyor 2A for transmitting to the side (first) rotary shaft 3A.
Is a pulley as a power transmission component mounted on the uppermost stream side rotary shaft 21 of each of the pulleys 11, 11
It is a belt as a power transmission component that is wound between 0s.

The rotating shafts 3A, 3B, 3C, 3D, 3
E, 3F, 3G are approximately 90 degrees flat with respect to the linear conveyor 2A.
As means for detachably and rotatably erected on the frames 1 and 1 ′ that are bent at an angle of about 0 ° and are substantially opposed to each other, a large number of substantially semicircular recesses 12 a are provided on the upper surface, and the frames 1, 1 ′ are on the lower surface. Mounting piece part 1 that is bent into an approximately L shape on the upper part of the
and a plastic bearing bar 12 provided with a fitting groove 12b into and out of which a and 1a are inserted and removed in a longitudinal direction, and a substantially cylindrical shape made of plastic or metal. Rotating shafts 3A, 3
Left and right shaft ends 3a of B, 3C, 3D, 3E, 3F and 3G,
The rotating shafts 3A, 3B, 3C, 3 are formed by a bushing 13 as a bearing component that rotatably inserts and supports 3b.
D, 3E, 3F and 3G are detachably and rotatably attached to and supported by the substantially opposed frames 1 and 1 '.

The linear conveyor 2B on the downstream side is also located on the upstream side of the conveyor, and has a single motor M1 as a drive source, and the frames 20 and 20 'arranged to face each other in a substantially straight line state. A large number of rotary shafts 21 installed between the frames 20 and 20 ', and shaft ends 21a and 21b of the rotary shaft 21 on the upstream side and the downstream side are connected to the frame 20,
A flexible connecting part 22 having a substantially U-shape bent at about 180 degrees and connected to an outer portion of 20 'and a roller 23 supported by a predetermined rotating shaft 21 are provided to rotate the motor M1. The rotary shaft 21 on the downstream side via the flexible connecting component 22 from the rotary shaft 21 on the upstream side via a power transmission component such as a pulley 24 mounted on the motor shaft m1 and a belt 26 connected to the pulleys 24, 25. To rotate the roller 23.

The structure of the flexible connecting parts 22 of the linear conveyors 2A and 2B is the same as that of the flexible connecting parts 5 of the route changing conveyor, and the connecting method for a large number of rotating shafts 21 is also shown in FIGS. It is similar to the method.

The first embodiment of the present invention is constructed as described above, and in order to convey the article F, first, the motor M as a single drive source located upstream of the linear conveyor 2A is driven to rotate, The rotational driving force of the motor M is transmitted to the frames 20, 20 'through power transmission components such as a belt 9 wound around a pulley 9 mounted on a motor shaft m and a pulley 10 mounted on an upstream rotary shaft 21. The rotary shaft 21 is rotatably mounted and transmitted to the most upstream side rotary shaft 21.
To rotate.

As described above, when the rotational driving force from the motor M is transmitted to the most upstream (first) rotary shaft 21, the shaft end 21a of the rotary shaft 21 and the shaft end of the second rotary shaft 21 are rotated. Two
As shown in FIG. 1, one spring is approximately 180 mm.
Since the flexible connecting part 22 having a substantially U-shape that is bent at a time is connected to form the closed end K ′, the most upstream rotation shaft 21 is rotated by the twisting and restoring of the flexible connecting part 22 to the second rotation. The rotation is transmitted to the shaft 21. Since the second rotary shaft 21 is arranged substantially parallel to the first rotary shaft 21, the rotary shafts 21, 21
Are rotated in opposite directions.

Thereafter, the rotation from the second rotary shaft 21 is transferred to the third rotary shaft 21 via the flexible connecting component 22, and the rotation of the third rotary shaft 21 is rotated to the fourth rotary shaft 21. Further, the rotation of the fourth rotary shaft 21 is changed to the fifth rotary shaft 21 by the flexible connecting parts 22 respectively.
The rotation is transmitted through the rotary shaft 21 and the subsequent rotary shaft 21 rotates in the opposite direction to the preceding rotary shaft 21.

By the way, since the roller 23 is loosely inserted in the odd-numbered rotary shaft 21 of the linear conveyor 2A, the article F is placed on the roller 23 and delivered to the roller 23 and the rotation thereof. The shaft 21 is frictionally engaged with the article 21, and the article F is transported from the upstream side to the downstream side.

At this time, the rotary shafts 21 arranged in odd numbers
The even-numbered rotating shafts 21 that rotate in the opposite directions opposite to the rotation direction of the roller 23 supported by support the article F and prevent the article F from falling when the article F is conveyed by the roller 23. It does not contribute to the conveyance of the article F.

In this way, when the article F conveyed to the linear conveyor 2A reaches the path changing portion, the rotation and driving force of the motor M as the drive source of the linear conveyor 2A is changed to the rotation of the final stage of the linear conveyor 2A. Shaft end 21 of shaft 21
b and the rotating shaft 3A located on the most upstream side of the route changing conveyor
Since both ends 22a and 22b are coupled to the shaft end 3b of the shaft and one spring S is used to pass the rotational force through the flexible connecting component 22 which is bent at the outer portion of the frame 20 ', 1', a desired curvature is obtained. The most upstream side rotation shaft 3A, which is erected at a proper angle α in the plane, on the frames 1 and 1'which are substantially opposed to each other by bending the plane conveyors R1 and R2 to the linear conveyor 2A at approximately 90 ° in the plane is rotated.

When the rotary shaft 3A arranged on the most upstream side of the route changing conveyor rotates in this way, the frame 1,
The rotation shafts 3B, 3C, 3D, 3E, 3F and 3G in the subsequent stage, which are installed between the 1's at an appropriate angle α in the plane, have a spring S of approximately 180 ° in the outer portion of the frames 1 and 1 '.
Shaft end 3 through flexible connecting parts 5 and 5 that are bent at
Since a, 3a; 3b, 3b are connected, they are sequentially rotated in opposite directions.

Since the roller 4 is loosely inserted in the rotating shafts 3A, 3C, 3E arranged at odd-numbered positions in the route changing conveyor, the article F is loaded by the load to the roller 4 and the rotating shafts 3A, 3C, 3E. , 3G are frictionally engaged with each other to obtain a rotational force, so that they are conveyed while the path is changed and delivered to the linear conveyor 2B at the subsequent stage.

The conveyance of the article F on the linear conveyor 2B at the latter stage is performed from the upstream side to the downstream side via the flexible connecting part 22 by driving the motor M1 located on the upstream side similarly to the linear conveyor 2A at the former stage. As the rotary shaft 21 is sequentially driven to rotate, the rotary shafts 21 arranged in odd numbers and the rollers 23 loosely inserted therein are frictionally engaged with each other and contribute to the transport, whereby the article F is transported to the subsequent stage. It

In this case, the rotary shafts 2 arranged at odd numbers
The rotating shafts 21 arranged in even numbers with respect to 1 rotate in the opposite directions, but do not contribute to the conveyance of the article F and prevent the article F from falling.

What is shown in FIGS. 6 and 7 is the second embodiment of the present invention.
This is an embodiment, and in this embodiment, a plurality of, for example, two rows of transfer lines A1 and A2 are provided on the same conveyor.

That is, in the second embodiment, the rotary shafts 3A, 3B, 3C, 3D, 3 of the route changing conveyor are used.
E, 3F, 3G and a large number of rotary shafts 21 ... In the linear conveyors 2A, 2B, each having a length about 1.5 to about 2 times longer than that of the first embodiment, are used for the respective frames 1, 2.
1 '; 20, 20', which is different from the first embodiment, in that two lines of conveying lines A1 and A2 are provided to convey articles F in multiple lines at once. ..

FIG. 8 shows a third embodiment of the present invention. In the third embodiment, a plurality of columns, for example, a route changing conveyor and a linear conveyor 2 are provided on the same conveyor.
As in the second embodiment, the two lines of transport lines A1 and A2 are installed in A and 2B, respectively.

However, in this embodiment, one of the two rows of the transfer lines A1 and A2 is the transfer line A1.
At the odd-numbered rotary shafts 21 of the linear conveyors 2A and 2B and the odd-numbered rotary shafts 3A of the route change conveyor,
Rollers 23, 4 are loosely inserted from one side of the center of 3C, 3E, 3G to one side, and in the other transfer line A2, the odd-numbered rotary shaft 21 of the transfer line A1 and the rotary shafts 3A, 3C, 3E By linearly inserting the rollers 23, 4 from one side of the even-numbered rotary shaft 21 that rotates in the opposite direction to 3G and the even-numbered rotary shafts 3B, 3D, 3F of the path changing conveyor to the opposite side from the center. Two
Rotating shaft 21 of A and 2B and rotating shaft 3 of the route changing conveyor
A, 3B, 3C, 3D, 3E, 3F and a single motor M
To rotate the odd number and the even number in opposite directions to transfer the article F to the conveyor line A1 of the same conveyor.
It differs from the first and second embodiments in that it can be conveyed in opposite directions in A2.

9 and 10 are applied to the fourth embodiment of the present invention applied to a spiral conveyor.

That is, this spiral conveyor is provided with a single motor M2 as a drive source provided on the upstream side (lower side in FIG. 9) of the conveyor and desired curvatures R1 and R2 as shown in FIG. And frames 30 and 30 'which are substantially circular in a plane so as to be substantially opposed to each other and are formed in a spiral shape having an upward slope of an appropriate angle β1, for example, 15 degrees to 30 degrees in a height direction Z orthogonal to the plane. , The frame 3
Different from the above-described embodiment, the plane appropriate angle α between 0 and 30 '
And a large number of rotating shafts 3'A, 3'B rotatably and detachably installed in the height direction Z at an appropriate angle β2.
3'C, 3'D, 3'E, 3'F, 3'G, 3'H,
3'I, 3'J, 3'K, 3'L, 3'M, 3'N,
3'O, 3'P, 3'Q ... and the rotating shafts 3'A, 3 '
B, 3'C, 3'D, 3'E, 3'F, 3'G, 3 '
H, 3'I, 3'J, 3'K, 3'L, 3'M, 3 '
N, 3'O, 3'P, 3'Q ... Axial ends 3'a, 3'a;3'b,3'b of the upstream side and the downstream side are connected to the outer portion of the frame 30, 30 '. A substantially U-shaped flexible connecting part 5 that is bent at about 180 ° and is connected to the article F.
In order to convey the predetermined rotation shafts, that is, odd-numbered rotation shafts 3'A, 3'C, 3'E, in the present embodiment.
It is different from the first embodiment in that it is formed of a roller 4 loosely inserted in 3'H, 3'J, 3'L, 3'N, 3'P ....

The frames 30, which are substantially spirally opposed to each other,
Rotating shafts 3'A and 3'removably and rotatably on 30 '
B, 3'C, 3'D, 3'E, 3'F, 3'G, 3 '
H, 3'I, 3'J, 3'K, 3'L, 3'M, 3 '
N, 3'O, 3'P, 3'Q ... Are provided over the upper surface of the plurality of substantially semicircular recesses 31a at appropriate angles in the plane, and the lower surfaces of the frames 30, 30 '. An attachment piece portion 30a formed in the upper portion so as to substantially match the spiral shape of the frame 30, 30 'and bent into a side surface substantially L-shape,
A bearing bar 31 made of plastic having a fitting groove 31b into which the 30'a is inserted and removed is provided in the longitudinal direction, and a substantially cylindrical shape made of plastic or metal, which is detachably fitted in the recess 31a. The rotating shafts 3'A, 3 '
B, 3'C, 3'D, 3'E, 3'F, 3'G, 3 '
H, 3'I, 3'J, 3'K, 3'L, 3'M, 3 '
N, 3'O, 3'P, 3'Q ... left and right shaft ends 3'a,
3'b is rotatably inserted to support the bushing 32 as a bearing component to support the rotating shaft 3'A,
3'B, 3'C, 3'D, 3'E, 3'F, 3'G,
3'H, 3'I, 3'J, 3'K, 3'L, 3'M,
3'N, 3'O, 3'P, 3'Q ... Are detachably attached to and supported by the frames 30 and 30 'which are spirally opposed to each other.

The spiral winding direction of the frames 30 and 30 'is not limited to the upward rising direction shown in FIG. 9, but may be the upward rising direction.

In order to convey the article F, when the motor M2 as a drive source located on the upstream side is rotationally driven,
Since the pulley 34 is rotated via the belt 35 wound around the pulley 33 mounted on the motor shaft m2, the pulley 34 is rotated between the frames 30 and 30 'arranged substantially opposite to each other with desired curvatures R1 and R2. The rotating shaft 3'A, which is freely installed and is located on the most upstream side, is rotationally driven.

Therefore, in the plane, desired curvatures R1 and R2 are obtained.
Through the substantially U-shaped flexible connecting part 5 bent at about 180 ° in the outer portions of the frames 30 and 30 'arranged substantially opposite to each other, the shaft ends 3'a, 3'a;3'b,
A number of subsequent rotary shafts 3'B, 3'b of which are connected to each other,
3'C, 3'D, 3'E, 3'F, 3'G, 3'H,
3'I, 3'J, 3'K, 3'L, 3'M, 3'N,
The 3'O, 3'P, 3'Q ... rotate in mutually opposing directions.

Therefore, the odd numbered rotary shafts 3'A, 3'C, 3'E, 3'G, 3'I, 3'K,
The rollers 4 loosely inserted into the 3'M, 3'O ... The rotating shafts 3'A, 3'C, 3'when the load of the article F is applied.
E, 3'G, 3'I, 3'K, 3'M, 3'O ... are frictionally engaged and rotated, so that the article F is conveyed to the subsequent stage by the rotation of the roller 4, and along the spiral. To rise.

Also in this case, the odd numbered rotary shafts 3'A, 3'C, 3'E, 3'G, 3'I, 3'K,
3'M, 3'O ... Rotating shafts 3'B, 3'rotating in the opposite direction and arranged at even-numbered positions in which the roller 4 is not loosely inserted.
D, 3'F, 3'H, 3'J, 3'L, 3'N, 3'P
... does not contribute to the conveyance of the article F and prevents the article F from falling.

In this embodiment, the case where the article F is conveyed along the spiral frames 30 and 30 'has been described, but the installation position of the motor M2 as the drive source is provided at the upper side in FIG. If it is located on the upstream side, the article F can be conveyed downward in the spiral.

Further, in the fourth embodiment, if a plurality of rows, for example, two rows of the conveyance lines A1 and A2 are provided in the same line as in the second embodiment, the articles F in a plurality of rows are conveyed in the same line. It is also possible to perform the above, and as in the second embodiment shown in FIG. 8, the rotating shafts 3'A and 3'B located at the odd numbered positions and the even numbered positions which rotate in opposite directions by the single motor M, respectively. , 3'C, 3'D, 3'E, 3 '
F, 3'G, 3'H, 3'I, 3'J, 3'K, 3 '
L, 3'M, 3'N, 3'O, 3'P, 3'Q ... are sectioned at approximately the center, and the rollers 4 are alternately inserted into each of the sections thus divided. It is also possible to convey the articles F in opposite directions in the conveying lines A1 and A2 of the same spiral conveyor, that is, in an ascending direction and a descending direction.

It should be noted that the frame 1 on the inner peripheral side, which is arranged substantially opposite to each other with the desired curvatures R1 and R2, is arranged in both the route changing conveyors of the first to third embodiments and the spiral conveyor of the fourth embodiment of the present invention. , 30 and the outer peripheral frames 1 ', 30', which are respectively arranged at an appropriate plane angle α, 3A, 3B, 3C, 3D, 3E, 3F, 3G;
3'A, 3'B, 3'C, 3'D, 3'E, 3'F,
3'G, 3'H, 3'I, 3'J, 3'K, 3'L,
Shaft end 3 of 3'M, 3'N, 3'O, 3'P, 3'Q ...
a, 3a; 3b, 3b: 3'a, 3'a;3'b, 3 '
b Even if there is a change in length between the lengths (planar open angle), the flexible connecting component 5 exerts flexibility so that the rotary shafts of the upstream side and the downstream side and the outer peripheral side and the inner peripheral side are The shaft ends can be connected to each other.

Further, in each of the above embodiments, the flexible connecting part 5 is used by using one spring S in a substantially U-shaped state in which the spring S is bent at about 180 degrees. Large diameter spring S
A double type spring in which a small diameter spring wound in the same direction or in the opposite direction is incorporated may be used.

In each of the above embodiments, the route changing conveyors and the linear conveyors 2A and 2B related to the article F are also included.
The so-called slip torque type conveyor in which the rotary shaft is loosely inserted into the mounting holes of the rollers 4 and 23 is described as an example, but the present invention is not limited to this and the mounting of the rollers 4 and 23 is not limited to this. The present invention can also be applied to a conveyor of the type in which the rollers 4 and 23 and the rotary shaft rotate integrally by inserting the rotary shaft into the hole.

In each of the above-mentioned embodiments, the flexible connecting component 5 for connecting the shaft portions of the rotary shafts to each other alternately connects the adjacent rotary shafts from the upstream side to the opposite shaft ends. However, the arrangement and combination of the rotating shafts are not limited to those shown in the above embodiment, and they may be arranged in an appropriate combination according to the length of the article F. Moreover, the number of transfer lines installed on the same conveyor is not limited to that in the above-described embodiment, and the number can be freely increased or decreased.

Further, in each of the above-described embodiments, the article F is prevented from falling by the rotation shaft not provided with the rollers arranged between the rotation shafts provided with the rollers 4 and 23 for conveying the article F. From this point of view, a roller having a smaller diameter than the rollers 4 and 23 that contribute to the conveyance of the article may be inserted into the rotation shaft so as not to contribute to the conveyance of the article F but to prevent the article from falling.

Further, in all of the above-described embodiments, the description has been made so as to constitute the entire line, but any of these embodiments is also within the scope of the present invention when partially implemented in the line.

[0063]

As described above, according to the present invention, the upstream side and the downstream side of the rotating shaft that supports the roller which is detachably mounted on the frame arranged so as to be substantially opposed to each other with a desired curvature and which is detachably mounted at an appropriate angle. Since the shaft ends are connected to each other at the outer portion of the frame through a flexible U-shaped flexible connecting component that is bent approximately 180 degrees, it is necessary to attach or detach all the rotating shafts to or from the frame. By only removing the necessary parts without doing so, it is possible to significantly save labor for disassembling and assembling the power transmission parts in the drive mechanism, and to securely perform replacement and replenishment work of power transmission parts even for unskilled persons. In addition, the work efficiency of maintenance and inspection can be simplified.

[Brief description of drawings]

FIG. 1 is a plan view showing an entire first embodiment of the present invention.

FIG. 2 is a plan view of the same main portion.

3 is a partially cutaway side view of FIG. 2. FIG.

FIG. 4 is a cross-sectional view showing an example of a connection state between a rotary shaft and a flexible connection component.

FIG. 5 is a cross-sectional view showing another example of the connection state between the rotary shaft and the flexible connection component.

FIG. 6 is a plan view showing a second embodiment of the present invention.

FIG. 7 is a partial plan view of the same.

FIG. 8 is a plan view showing a third embodiment of the present invention.

FIG. 9 is a semi-sectional side view showing a fourth embodiment of the present invention.

FIG. 10 is a plan view of the same.

[Explanation of symbols]

 1 frame 1'frame 3A rotating shaft 3B rotating shaft 3C rotating shaft 3D rotating shaft 3E rotating shaft 3F rotating shaft 3G rotating shaft 3a shaft end 3b shaft end 4 roller 5 flexible connecting part 5a end 5b end 9 pulley 10 pulley 11 M motor

Claims (3)

[Claims] 1. A motor as a drive source provided on the upstream side of a conveyor, a frame substantially opposed to and having a desired curvature, a rotary shaft installed between the frames at an appropriate angle in a plane, It comprises a substantially U-shaped flexible connecting part that is bent at about 180 ° and connects the shaft ends of the upstream side and the downstream side of the rotary shaft at the outer portion of the frame, and a roller supported by the predetermined rotary shaft. ,
A drive mechanism for a roller conveyor, wherein the rotational driving force of the motor is transmitted from the rotary shaft on the upstream side to the rotary shaft on the downstream side via the flexible connecting component to rotate the roller. 2. A drive mechanism for a roller conveyor, wherein the frame is bent in a plane at approximately 90 °, and the rotary shaft is installed at an appropriate angle in a plane to change a path. 3. A drive mechanism for a roller conveyor, wherein the frame is formed in a substantially circular shape in a plane and in a spiral shape having an upslope of an appropriate angle in the height direction, and a plurality of rotating shafts are installed at an appropriate angle of the plane.