JP2001192109A - Conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that a transfer failure occurs when a steel pipe conveyed on an angled surface of an over bridge with rolling down is transferred to a chain conveyer with a claw. SOLUTION: This conveying device 11 comprises a driving roller 12, a driven roller 13, and the chain conveyer 14 with a claw for receiving the steel pipe 1, includes a sprocket 17, a chain 18, a torque generating device 19, and a tension adjusting device 26, and has a driven-rotation-member driving device 15 for generating torque for the driven roller 13 in the direction same as a rotation driving direction of the chain conveyer 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a transfer device,
More specifically, the present invention relates to a transport device for a long metal material such as a steel pipe.

[0002]

2. Description of the Related Art In a manufacturing process of a long metal material,
It is transported by various transport devices. In the following description, a case where the long metal material is a steel pipe will be described as an example.

FIG. 5 is an explanatory diagram showing an example of a simplified process 7 for transporting the steel pipe 1. As shown in FIG. 1
Steel pipe 1 conveyed by chain conveyor 2 with claws
Is No. At the end of the chain conveyor 2 with one claw, it is transferred to the overbridge 3. The overbridge 3 is provided to be inclined as shown in the figure, and the transferred steel pipe 1 is rolled on the inclined surface of the overbridge 3 while the No. It is conveyed toward the chain conveyor 4 with two claws.

[0004] This No. Chain conveyor with two claws 4
Is annularly bridged between a drive roller 5 driven and rotated by a drive mechanism (not shown) and a driven roller 6 which is disposed at substantially the same height as the drive roller 5 and is driven and rotated. At the end, this No. 2
It is transferred between the claw portions 4a juxtaposed at predetermined intervals on the outer surface of the chain conveyor 4 with claws. The transferred steel pipe 1
When the drive roller 5 is rotated in the direction of the arrow, it is conveyed to the driven roller 6. It is transported to the end of the chain conveyor 4 with two claws.

[0005]

In the transfer step 7 shown in FIG. 5, a plurality of types of steel pipes 1 having different dimensions and weights are transferred. Therefore, depending on the size and weight of the steel pipe 1, the speed at which the steel pipe 1 passes through the overbridge 3,
That is, the time required for the steel pipe 1 to pass through the overbridge 3 varies. In contrast, this No. The interval between the claw portions 4a arranged side by side on the outer surface of the two-claw chain conveyor 4 is, of course, constant.

For this reason, depending on the size and weight of the steel pipe 1, the cycle at which the steel pipe 1 is discharged from the overbridge 3 does not coincide with the cycle at which the claw 4 a reaches the vicinity of the overbridge 3. In some cases, the steel pipe 1 discharged from the steel plate collides with the tip of the claw portion 4a and is bounced out, and cannot be accurately transferred to a predetermined position between two adjacent claw portions 4a. In such a case, No. It was necessary to stop the chain conveyor 4 with two claws and reload the steel pipe 1 which had been sprung out by human power at a predetermined position, and the reduction in productivity was inevitable.

[0007] Such poor transfer of the steel pipe 1 is caused by the rolling resistance generated when the steel pipe 1 passes through the overbridge 3 when the steel pipe 1 is deformed even if the steel pipe 1 has the same size and weight. Is also large,
The solution was desired.

SUMMARY OF THE INVENTION An object of the present invention is to reliably transfer a material to be transported made of a long metal material such as a steel pipe, which is rolled down on an inclined surface of an overbridge, to a chain conveyor with claws without causing a defective transfer. The purpose of the present invention is to provide a transfer device that can be transferred to a transfer device.

[0009]

The inventors of the present invention have made intensive studies to solve the above-mentioned problems, and as a result, the driven roller 6 in FIG. A device capable of generating a torque that rotates a minute amount in the same direction as the rotational driving direction of the chain conveyor 4 with two claws is provided. By rotating the chain conveyor 4 with two claws, the claws 4a are formed.
Can be finely adjusted in the period of reaching the vicinity of the overbridge 3, whereby it is possible to reliably prevent the steel pipe 1 discharged from the overbridge 3 from hitting the tip of the claw portion 4 a and jumping out. After finding out and conducting further studies, the present invention was completed.

According to the present invention, the first driving rotation member, the driven rotation member, and the first driving rotation member are rotatably driven by the first driving rotation member. And a transport member for mounting the transported material between both the first drive rotary member and the driven rotary member, and further generates a torque for rotating the driven rotary member in the same direction as the rotary drive direction of the transport member. A transport device comprising a driven rotation member driving device.

[0011] In the transport apparatus according to the present invention, the driven rotating member driving device is annularly bridged around the second driving rotating member and both the driven rotating member and the second driving rotating member. The tension of the power transmission member driven to rotate by the rotation member and the power transmission member driven from the driven rotation member to the second drive rotation member are increased, and the driven rotation member is driven to rotate by the driven rotation member. And a torque generating device that generates a torque that rotates in the same direction as the direction.

In the transfer device according to the present invention, the driven rotating member driving device further includes a tension adjusting device for adjusting the tension of the power transmission member driven from the second driving rotating member to the driven rotating member. Is exemplified.

In the transfer device according to the present invention, it is exemplified that the power transmission member is a chain.

In the case where the power transmission member is a chain, the torque generating devices abut against each other on both surfaces of a power transmission member driven from the driven rotation member to the second drive rotation member, and the power transmission member is driven by the torque generation device. It has at least two first rollers that are axially supported and separated from each other in the driving direction of the member, and a first shift device that moves the two first rollers in a direction crossing the power transmission member. That
Is exemplified. A second roller rotatably supported in contact with an inner surface of a power transmission member driven from the second drive rotation member to the driven rotation member;
And a second shift device for moving the roller in a direction intersecting the power transmission member.

In the conveying device according to the present invention, it is exemplified that the conveying member is a chain conveyor having claw portions arranged at predetermined intervals on the outer surface.

Further, in the transfer apparatus according to the present invention, it is exemplified that the material to be transferred is a long metal material such as a steel pipe.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a transfer apparatus according to an embodiment of the present invention. In the following description of the embodiments, a case where the transfer device according to the present invention is applied to a transfer process of a steel pipe which is a long metal material will be described as an example.

FIG. 1 shows a conveying device 1 for a steel pipe 1 according to the present embodiment.
It is a perspective view which partially simplifies and shows the steel pipe conveyance process 10 which applied 1 and 11 '. FIG. 2 shows A in FIG.
It is an arrow view.

In the following description, the same components as those shown in FIG. 5 described above will be denoted by the same reference numerals in the drawings, and redundant description will be omitted. As shown in FIG. 1, in the present embodiment, transport devices 11 and 11 ′ having the same configuration are installed at both ends in the longitudinal direction of the steel pipe 1, respectively.
1 'are synchronized and perform the same operation at the same timing.
Therefore, the following description will be made with respect to the transport device 11, and the transport device 11 ′ will be denoted by the same reference numerals in the drawings, and redundant description will be omitted.

As shown in FIGS. 1 and 2, the transfer device 11 includes a first drive rotation member 12, a driven rotation member 13, a transportation member 14, and a driven rotation member drive device 15. Hereinafter, these components of the transport device 11 will be sequentially described.

[First Driving Rotary Member 12] In the present embodiment, a driving roller mounted on a support (not shown) is used as the first driving rotary member 12. This drive roller 12
Is provided with a drive motor 12a.
By starting 2a, the drive roller 12 is driven and rotated in the direction of the arrow in FIGS.

As such a drive roller 12 and a drive motor 12a, known ones may be used.
Further description is omitted.

[Driving Rotary Member 13] In the present embodiment, a driven roller mounted on a support (not shown) is used as the second driving rotary member 13. The driven roller 13 has substantially the same outer diameter as the drive roller 12, and is disposed to face the drive roller 12 at substantially the same height. The driven roller 13 is not provided with a drive motor, and the driven roller 13 is driven and rotated in a direction indicated by an arrow in FIGS. 1 and 2 by a transport member 14 (described later) that is driven to rotate by the drive roller 12.

A small-diameter sprocket 16 is provided on the side surface of the driven roller 13 so that its own rotation axis coincides with the rotation axis of the driven roller 13.

Since the other configuration of the driven roller 13 is the same as that of a commonly used driven roller, further description will be omitted.

[Carrying Member 14] In this embodiment, a chain conveyor is used as the carrying member 14. The chain conveyor 14 includes a driving roller 12 serving as a first driving rotating member.
And the driven roller 13, which is a driven rotating member, is meshed with a meshing portion formed on the outer peripheral surface of the driven roller 13, and is looped over both of them, as shown in FIGS. The chain conveyor 14 is driven in the direction of the arrows in FIGS. 1 and 2 by activating the drive roller 12.

On the outer surface of the chain conveyor 14, a large number of claws 14a are arranged at predetermined intervals. The steel pipe 1 as a material to be conveyed is mounted between the adjacent claws 14a. The sheet is conveyed to the driven roller 13.

Since such a chain conveyor 14 may be a well-known and commonly used one, further description thereof will be omitted.

[Driving Rotary Member Driving Device 15] In the present embodiment, the driven rotating member driving device 15 includes a second driving rotary member 17, a power transmission member 18, and a torque generating device 19.
And a tension adjusting device 26. Hereinafter, these components of the driven rotation member driving device 15 will be sequentially described.

A sprocket was used as the second drive rotating member 17. The sprocket 17 has a drive motor 17a
The sprocket 17 is driven and rotated in the direction of the arrow in FIGS. 1 and 2 by activating the drive motor 17a. The sprocket 17 rotates by a slack of a chain 18 described later.

A power transmission member 18 is looped over both the sprocket 16 and the sprocket 17 provided on the side surface of the driven roller 13. In the present embodiment, a chain is used as the power transmission member 18. Chain 18
Is driven to rotate by activating the sprocket 17.

FIG. 3 is an explanatory diagram extracting and showing the configuration of the torque generating device 19. As shown in FIGS. 1 to 3, the torque generating device 19 includes two first rollers 20 a and 20 b.
Having. The two first rollers 20a and 20b abut each other on both surfaces of a chain 18a driven from the sprocket 16 to the sprocket 17, and are supported by being separated from each other in the driving direction of the chain 18a.

The rollers 20a and 20b are
The first tighter plate 22 is pivotally supported on one flat surface side. The first tighter plate 22 has a substantially isosceles triangular planar shape and is rotatably supported by the tighter shaft 21.

A second tighter plate 23 is fixed to the other flat surface of the first tighter plate 22. An upper end of the second tighter plate 23 is rotatably connected to an end of a first shift device 24 pivotally supported on the upper surface of the mounting table 25. In the present embodiment, as the first shift device 24,
A power cylinder was used. Although not shown in FIGS. 1 to 3 in order to avoid complication of the drawings, as shown in FIG. 4 described later, the power cylinder 24 has limit switches 24a and 24b for detecting the ingress and egress of the piston.
And a potentiometer 24 for measuring the amount of expansion and contraction of the piston
c is provided.

Further, as shown in FIGS. 1 and 2, the tension adjusting device 26 is provided with a second roller 27 which is rotatably supported in contact with the inner surface of the chain 18b driven from the sprocket 17 toward the sprocket 16. A second shift device 29 fixed to the upper surface of the mounting table 28 and supporting the second roller 27 at the tip thereof. In the present embodiment, an air cylinder is used as the second shift device 29. By starting the air cylinder 29, the second
Roller 27 can be moved in a direction crossing the chain 18b.

FIGS. 4A and 4B are explanatory diagrams showing the operation of the torque generator 19 and the tension adjusting device 26. FIG. 4A shows the state before the operation, and FIG. 4B shows the state after the operation.

FIG. 4A shows the same state as that shown in FIGS. That is, the sprocket 16 and
The chain 18 is bridged in a substantially triangular shape by the sprocket 17 and the second roller 27.

At this time, the power cylinder 24 has been extended to the almost limit position, and the first tighter plate 22 is
It stops at the angle shown in FIG. The rollers 20a and 20b supported by the first tighter plate 22 are
8a abuts on both sides, and is driven and rotated by the movement of the chain 18a. On the other hand, the air cylinder 29 is contracted to the position of the return limit, and the second roller 27 is
8b, and is rotated by the movement of the chain 18b.

At this time, in FIG. 1 and FIG.
Is discharged from the overbridge 3 and the claw 14
4A coincides with the cycle of reaching the vicinity of the overbridge 3, and the phase of the claw portion 14a in FIG.

Here, from a line control device (not shown),
Since the steel pipes 1 having different dimensions and weights flow through the overbridge 3, a command to shift the phase of the claw portion 14a after a predetermined time has been input to the control device of the transport device 10 of the present embodiment (not shown). I do.

When the predetermined time has elapsed, the transfer device 10 of the present embodiment activates the power cylinder 24 as shown in FIG. 4B, so that the first tie toner plate 22 and the second The tight toner plate 23 is rotated around the tight toner shaft 21 as a rotation center. As a result, the first rollers 20a and 20b move in directions opposite to each other in a direction substantially orthogonal to the chain 18a while abutting on both surfaces of the chain 18a. For this reason, the chain 18
a is a first roller 20a, as shown in FIG.
It bends and displaces between 20b. For this reason, chain 1
8a becomes longer, the tension increases, and the sprocket 1
6 is generated by rotating the chain conveyor 14 in a small amount in the same direction as the rotation driving direction of the chain conveyor 14. Therefore, the driven roller 13 to which the sprocket 16 is fixed also rotates by a very small amount in the same direction.

At this time, when the torque generator 19 is operated in this manner, the length of the chain 18b becomes short, and the tension increases. Therefore, in order to prevent the tension from increasing due to the short length of the chain 18b, the transfer device 10 of the present embodiment operates the air cylinder 29 at the same time when the torque Roller 27
4 is kept in contact with the inner surface of the chain 18b.
Move to the left in (b). Thereby, the shortage of the length of the chain 18b is compensated, and the rise of the tension is suppressed.

As described above, the driven rotating member driving device 15 of the present embodiment can generate a torque for slightly rotating the driven roller 16 in the same direction as the rotation driving direction of the chain 18 for a short time.

For this reason, the chain conveyor 14 meshing with the driven roller 16 also moves by a very small amount, whereby the phase of the claw portion 14a can be shifted by an arbitrary amount of 0 to 100%. For this reason, according to this embodiment, the steel pipe 1 which is rolled down on the inclined surface of the overbridge 3 and transported.
The transfer device 11 is capable of reliably transferring from the overbridge 3 to the chain conveyor 14 with the claw without causing a transfer failure due to the collision with the tip of the chain conveyor 14 with the claw and being jumped out. Provided.

Since the transfer device 11 does not use, for example, clutches and brakes, even if it is installed in the steel pipe transfer process 10 in an environment where a large amount of dust, moisture and the like scatters, failures occur less frequently.

In addition, since the driven roller 13 does not use, for example, a clutch or a brake for rotation, the start and stop of the conveyance, and the inertial force and the fluctuating force generated at the time of the conveyance are not transmitted to the driven rotating member driving device 15. Therefore, the frequency of occurrence of a failure such as looseness or looseness in the driven rotary member drive device 15 is reduced, and transport troubles can be reduced.

(Modification) In the description of the embodiment, the case where the material to be conveyed is a steel pipe is taken as an example, but the present invention is not limited to a steel pipe. Other than steel pipes, pipes made of various metals,
The present invention is applicable to a long metal material such as a round bar material and a square bar material.

Further, in the description of the embodiment, the case where two transfer devices having the same structure and operating simultaneously are installed at both ends in the longitudinal direction of the steel pipe is taken as an example. The form is not limited. This transport device is installed only on one side in the longitudinal direction of the steel pipe, and the drive roller of this transport device, the drive roller having the same rotation axis as the driven roller, and the driven roller are installed on the non-installed side. Is also good. Thereby, an increase in equipment cost can be suppressed.

Further, in the description of the embodiment, the driven rotating member driving device includes a second driving rotating member, a power transmitting member,
Although the case where a torque generating device and a tension adjusting device are provided is taken as an example, the present invention is not limited to this embodiment. The driven rotation member driving device may be any device as long as it can generate a torque for rotating the driven rotation member in the same direction as the rotation driving direction of the transport member. Further, the tension adjusting device does not necessarily need to be installed when the power transmission member is not a chain as described in the embodiment, but is made of a stretchable belt, for example.

Further, in the description of the embodiment, the case where the phase of the claw portion is shifted when the chain conveyor is driven is taken as an example. However, the present invention is not limited to this embodiment, and may be performed when the chain conveyor is stopped. It goes without saying that it is good.

[0051]

As described in detail above, according to the present invention, a conveyed material made of a long metal material such as a steel pipe, which is conveyed while rolling down the inclined surface of the overbridge, is converted into a chain conveyor with claws. It has become possible to provide a transport device that can reliably transfer without causing a transfer failure. The significance of the present invention having such an effect is extremely remarkable.

[Brief description of the drawings]

FIG. 1 is a perspective view showing, in a simplified manner, a part of a steel pipe transfer process to which a steel pipe transfer device according to an embodiment is applied.

FIG. 2 is a view taken in the direction of arrow A in FIG.

FIG. 3 is an explanatory diagram extracting and showing a configuration of a torque generating device.

4A and 4B are explanatory diagrams showing the operation of the torque generating device and the tension adjusting device. FIG. 4A shows the state before the operation, and FIG. 4B shows the state after the operation.

FIG. 5 is an explanatory view showing a simplified example of a steel pipe transfer process.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 steel pipe 11 transfer device 12 drive roller 13 driven roller 14 chain conveyor with pawl 15 driven rotating member drive device 17 sprocket 18 chain 19 torque generating device 26 tension adjusting device

Continued on the front page. (72) Inventor Toru Kimura 3 Kazuyoshi, Kashima City, Ibaraki Prefecture Sumitomo Metal Industries Kashima Works, Ltd. F-term (reference) 3F027 AA04 CA04 DA24 EA01 FA02 3F034 FA05 FB03 FC05

Claims (8)

[Claims] A first driving rotation member, a driven rotation member, and a ring that is looped over both the first driving rotation member and the driven rotation member to be rotationally driven by the first driving rotation member. A transport member for mounting a transported material between the first drive rotation member and the driven rotation member, and further rotates the driven rotation member in the same direction as the rotational drive direction of the transport member. A transport device comprising a driven rotating member driving device that generates torque. 2. The driven rotation member driving device, wherein the driven rotation member driving device is looped over a second drive rotation member and both the driven rotation member and the second drive rotation member, and is driven by the second drive rotation member. A power transmission member that is driven to rotate, a torque generator that increases the tension of the power transmission member that is driven from the driven rotation member toward the second drive rotation member and generates the torque in the driven rotation member; The transport device according to claim 1, comprising: 3. The driven rotating member driving device further comprises:
The transfer device according to claim 2, further comprising a tension adjusting device that adjusts a tension of the power transmission member that is driven from the second drive rotation member to the driven rotation member. 4. The transfer device according to claim 2, wherein the power transmission member is a chain. 5. The torque generating device according to claim 1, wherein said torque generating devices are in contact with both surfaces of said power transmission member driven from said driven rotation member to said second drive rotation member, and are separated from each other in a driving direction of said power transmission member. The apparatus according to claim 4, further comprising: at least two first rollers that are pivotally supported; and a first shift device that moves the two first rollers in a direction intersecting the power transmission member. Transport device. 6. The tension adjusting device further comprises: a second roller supported by and abutting against an inner surface of the power transmission member driven from the second drive rotation member toward the driven rotation member; The transport device according to claim 4, further comprising a second shift device configured to move the second roller in a direction intersecting with the power transmission member. 7. The transport device according to claim 1, wherein the transport member is a chain conveyor having claw portions arranged at predetermined intervals on an outer surface. 8. The transport device according to claim 1, wherein the transported material is a long metal material.