JP6929172B2 - Transport device - Google Patents

Description

The present invention relates to a connecting roller for connecting two strip-shaped and unvulcanized rubber materials and a transport device including the connecting roller.

In a transport device for charging a strip-shaped and unvulcanized rubber material into a rubber extruder or the like, in order to continuously charge the preceding first rubber material and the subsequent second rubber material, each longitudinal direction The ends of the rubber are overlapped and connected. Conventionally, this connection has been performed manually by an operator, so that the connection strength varies widely and the connection state may be disconnected.

Therefore, Patent Document 1 below proposes a connecting device for stably connecting the first rubber material and the second rubber material by sandwiching them between a pair of rollers.

Microfilm of Jitsugyo No. 60-007967 (Jitsukaisho No. 61-125410)

However, in the connecting device of Patent Document 1, since the pair of rollers is in the shape of a gear, the thickness of the rubber material fluctuates in the longitudinal direction of the rubber material, and there is a portion where the strength in the longitudinal direction decreases. Therefore, the rubber material connected by the connecting device of Patent Document 1 may break when pulled in the transport direction.

The present invention has been devised in view of the above circumstances, and a main object of the present invention is to provide a connecting roller for firmly connecting two strip-shaped and unvulcanized rubber materials and a transport device including the connecting roller. It is said.

The present invention is a connecting roller for connecting a strip-shaped and unvulcanized first rubber material and a second rubber material, each of which has overlapping longitudinal ends, and is a main body constituting a rotating shaft. It is characterized by including a portion and an annular protrusion portion that protrudes from the main body portion in a direction orthogonal to the axial direction of the main body portion.

In the connecting roller according to the present invention, it is desirable that a plurality of the protrusions are provided apart from each other in the axial direction of the main body.

In the connecting roller according to the present invention, it is desirable that three or more of the protrusions are provided at equal intervals in the axial direction of the main body.

A transport device including a connecting roller according to the present invention and a transport conveyor for transporting the first rubber material and the second rubber material along the longitudinal direction, wherein the connecting roller is on the transport conveyor. It is desirable that the first rubber material and the second rubber material to be conveyed are arranged at positions where they can come into contact with each other.

In the transfer device according to the present invention, it is desirable that the distance from the support surface of the transfer conveyor to the main body portion is larger than the thickness of the overlapping portion.

The connecting roller of the present invention includes a main body portion that constitutes a rotation shaft, and an annular protrusion that protrudes from the main body portion in a direction orthogonal to the axial direction of the main body portion. In such a connecting roller, since the annular protrusion presses the overlapping portion, the thickness of the rubber material does not fluctuate in the longitudinal direction of the rubber material. Therefore, the connecting roller of the present invention can firmly connect the overlapped portion of the two rubber materials, which are strip-shaped and unvulcanized.

It is a perspective view which shows one Embodiment of the connecting roller of this invention. It is a partial cross-sectional view of the connecting roller which connects the overlapping part. It is a side view of the transport device including the connecting roller of FIG. It is a partial side view of the transport device which connects two rubber materials. It is a perspective view of the transport device of another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing the connecting roller 1 of the present embodiment. As shown in FIG. 1, the connecting roller 1 of the present embodiment connects the overlapping portions 4 in which the longitudinal ends 2e and 3e of the two strip-shaped and unvulcanized rubber materials 2 and 3 are overlapped. Suitable for use. The rubber materials 2 and 3 include a first rubber material 2 which is conveyed in advance to an arbitrary device and a second rubber material 3 which is conveyed following the first rubber material 2.

FIG. 2 is a partial step view of the connecting roller 1 connecting the overlapping portions 4. As shown in FIGS. 1 and 2, the connecting roller 1 has an annular protrusion that continuously protrudes from the main body 5 constituting the rotation axis a in a direction orthogonal to the axial direction of the main body 5. It is desirable to include part 6. In such a connecting roller 1, since the annular protrusion 6 presses the overlapping portion 4, the thickness of the rubber materials 2 and 3 does not change in the longitudinal direction of the rubber materials 2 and 3. That is, the connecting roller 1 of the present embodiment has constant strength in the longitudinal direction of the rubber materials 2 and 3, and is less likely to break when pulled in the transport direction T. Therefore, the connecting roller 1 of the present embodiment can firmly connect the overlapping portion 4 of the two strip-shaped and unvulcanized rubber materials 2 and 3.

It is desirable that the main body 5 has an arbitrary shape. The main body 5 of the present embodiment is exemplified by a round shaft having a circular cross section. The main body 5 may be, for example, a square shaft or a spline shaft having a rectangular cross section.

It is desirable that a plurality of protrusions 6 are provided so as to be spaced apart from each other in the axial direction of the main body 5. In such a connecting roller 1, the rubber materials 2 and 3 can be dispersed and pressed in the width direction by the plurality of protrusions 6, so that the overlapping portions 4 can be connected more firmly.

As shown in FIG. 1, the connecting rollers 1 of the present embodiment are arranged in a path for transporting the rubber materials 2 and 3 in the transport direction T. The connecting roller 1 is fixed at a predetermined height, for example. It is desirable that the height of the connecting roller 1 is appropriately adjusted depending on the material and thickness of the rubber materials 2 and 3 to be conveyed. Such a connecting roller 1 does not require an elevating mechanism for the connecting roller 1, and can reduce the failure rate. The connecting roller 1 may be variably configured without fixing its height.

In the connecting roller 1, not only the overlapping portion 4 in which two rubber materials 2 and 3 are overlapped, but also a plurality of streaks 7 are formed on the rubber materials 2 and 3 by the protrusion 6 pressing the one rubber material 2 and 3. Can be formed. The rubber materials 2 and 3 on which such streaks 7 are formed can be easily folded along the streaks 7 when, for example, the rubber materials 2 and 3 are compactly folded in the width direction on the downstream side of the transport direction T of the connecting roller 1.

As shown in FIG. 2, the distance d1 from the support surface 8s of the support portion 8 that supports the surface 2s of the conveyed rubber material 2 opposite to the connecting roller 1 to the protrusion 6 is the thickness of the rubber material 2. It is desirable that it is smaller than t1. Such a connecting roller 1 can surely form a streak 7 even in a portion of the rubber materials 2 and 3 other than the overlapping portion 4.

It is desirable that the distance d2 from the support surface 8s of the support portion 8 to the main body portion 5 is larger than the thickness t2 of the overlapping portion 4 of the rubber materials 2 and 3. In the present embodiment, the thickness t2 of the overlapping portion 4 of the rubber materials 2 and 3 is twice the thickness t1 of the rubber material 2. In such a connecting roller 1, even when the overlapping portions 4 are firmly connected, the uniformity of the rubber materials 2 and 3 can be maintained without the main body portion 5 coming into contact with the rubber materials 2 and 3.

The cross-sectional shape of the protrusion 6 of the present embodiment is substantially rectangular. Such a protrusion 6 can connect the overlapping portion 4 more firmly. The cross-sectional shape of the protrusion 6 may be, for example, trapezoidal, or the corners of the cross section may be arcuate.

As shown in FIG. 1, in the connecting roller 1, it is desirable that three or more protrusions 6 are provided at equal intervals in the axial direction of the main body 5. Such a connecting roller 1 is useful for gathering the folded rubber materials 2 and 3 more compactly when the rubber materials 2 and 3 are folded on the downstream side in the transport direction T of the connecting roller 1.

FIG. 3 is a side view of the transport device 10 including the connecting roller 1 of FIG. As shown in FIG. 3, the transport device 10 of the present embodiment includes a connecting roller 1 and a conveyor 11 for transporting the rubber materials 2 and 3 along the longitudinal direction. That is, in the present embodiment, the conveyor 11 constitutes the support portion 8. The transfer device 10 is preferably used for charging the rubber materials 2 and 3 into the rubber extruder 12 arranged on the downstream side in the transfer direction T, for example.

Here, as the rubber extruder 12, conventionally known ones are adopted, for example, a rubber inlet 12A into which the rubber materials 2 and 3 are charged, a substantially cylindrical barrel 12B provided with the rubber inlet 12A, and the like. It includes a screw 12C arranged in the barrel 12B. In the rubber extruder 12 of the present embodiment, the rubber inlet 12A is arranged above the barrel 12B. Such a rubber extruder 12 can continuously extrude rubber materials 2 and 3 in a predetermined cross-sectional shape while kneading them.

The conveyor 11 includes, for example, a belt conveyor 11A. The belt conveyor 11A of the present embodiment is driven by a transfer motor 11B so as to have an arbitrary transfer speed. The connecting roller 1 of the present embodiment does not have a driving device, and is driven to rotate by the frictional force of the rubber materials 2 and 3 to be conveyed. In such a transfer device 10, since the transfer speed of the rubber materials 2 and 3 can be controlled by the rotation speed of the transfer motor 11B, it is easy to synchronize with the rotation speed of the screw 12C of the rubber extruder 12. The connecting roller 1 may be driven at a speed synchronized with the conveyor 11.

The connecting roller 1 of the present embodiment is arranged at a position where it can come into contact with the rubber materials 2 and 3 transported on the transport conveyor 11. The connecting roller 1 presses the rubber materials 2 and 3 from above the conveyor 11, for example. The connecting roller 1 of the present embodiment is fixed to the conveyor 11 at a predetermined height.

Such a transport device 10 can continuously press the rubber materials 2 and 3, and a plurality of streaks 7 (FIG. 1) are formed on the rubber materials 2 and 3 by the protrusion 6 (shown in FIG. 1) of the connecting roller 1. ) Can be formed. Therefore, the transfer device 10 of the present embodiment can be easily folded compactly in the width direction when the rubber materials 2 and 3 are charged into the rubber insertion port 12A of the rubber extruder 12.

The transfer device 10 may include a pressing means that variably supports the height of the connecting roller 1 with respect to the transfer conveyor 11 and presses the connecting roller 1 toward the transfer conveyor 11. The pressing means may be, for example, an elastic means or the weight of the connecting roller 1. Further, the pressing means may be a mechanical means. Such pressing means can continuously press even when the thickness of the rubber materials 2 and 3 fluctuates in the longitudinal direction of the rubber materials 2 and 3.

FIG. 4 is a partial side view of the transport device 10 for connecting the two rubber materials 2 and 3. As shown in FIG. 4, the transfer device 10 of the present embodiment is suitable for connecting the first rubber material 2 that is conveyed in advance and the second rubber material 3 that is subsequently conveyed. ..

The first rubber material 2 and the second rubber material 3 are connected by overlapping the longitudinal end 2e of the first rubber material 2 and the longitudinal end 3e of the second rubber material 3. The superposition of the first rubber material 2 and the second rubber material 3 may be performed manually by an operator or may be performed automatically by a machine.

FIG. 5 is a perspective view of the transport device 20 of another embodiment. As shown in FIG. 5, the transport device 20 of this embodiment folds the connecting roller 1, the transport conveyor 21 for transporting the rubber material (not shown) along the longitudinal direction, and the rubber material in the width direction. It includes a folding device 22 and the like. The transfer device 20 is preferably used for feeding the rubber material into the rubber extruder 23 arranged on the downstream side in the transfer direction T, for example.

The connecting roller 1 of this embodiment is arranged on the upstream side of the conveyor 21 in the transport direction T. The connecting roller 1 is arranged at the lower part of the rubber material, for example. It is desirable that a substantially cylindrical auxiliary roller 24 is arranged above the connecting roller 1. By passing a rubber material between the connecting roller 1 and the auxiliary roller 24, a streak can be formed on the lower surface of the rubber material. That is, in this embodiment, the auxiliary roller 24 constitutes the support portion 8.

The connecting roller 1 and the auxiliary roller 24 of this embodiment are driven by the drive motor 1A. Such a connecting roller 1 and an auxiliary roller 24 can smoothly convey the rubber material and can continuously form streaks on the rubber material. The drive motor 1A may drive one of the connecting roller 1 and the auxiliary roller 24, and the other may be drivenly rotated via a rubber material.

The conveyor 21 of this embodiment includes a belt conveyor 21A. The conveyor 21 preferably has a pressing roller 25 on the downstream side of the belt conveyor 21A. The pressing roller 25 is rotatably supported around a fulcrum, for example. Such a pressing roller 25 can press the rubber material by its own weight, and can prevent the rubber material from floating from the conveyor 21. Therefore, the transport device 20 of the present embodiment can smoothly transport the rubber material.

The folding device 22 of this embodiment presses the rubber material in the vertical direction along the streaks and also in the width direction. The folding device 22 is preferably activated when the rubber material is first charged. Such a folding device 22 can compactly fold the rubber material in the width direction and put it into the rubber extruder 23. In the rubber extruder 23 of this embodiment, the rubber material is charged from the side of the barrel, but the rubber material may be charged from above or diagonally above the barrel.

In the above embodiment, the connecting roller 1 is arranged at the lower part of the rubber material, but the connecting roller 1 may be arranged at the upper part of the rubber material. In this case, the auxiliary roller 24 may be arranged below the rubber material, or the auxiliary roller 24 may be omitted and the conveyor 21 may be arranged below the connecting roller 1.

Further, the transport device 20 may form streaks on the upper and lower surfaces of the rubber material by arranging two connecting rollers 1 instead of the auxiliary rollers 24 and passing the rubber material between them. In this case, the number of protrusions 6 (shown in FIG. 1) of each connecting roller 1 may be small. In such a transport device 20, folding of the rubber material by the folding device 22 can be performed more smoothly.

Although the particularly preferable embodiments of the present invention have been described in detail above, the present invention is not limited to the illustrated embodiments and can be modified into various embodiments.

1 Connecting roller 5 Main body 6 Protrusion

Claims (4)

A connecting roller for connecting the overlapping portions of the strip-shaped and unvulcanized first rubber material and the second rubber material in the longitudinal direction, and the first rubber material and the second rubber material. A transport device including a transport conveyor for transporting along the longitudinal direction.
The connecting roller includes a main body portion constituting a rotation shaft and an annular protrusion portion protruding from the main body portion in a direction orthogonal to the axial direction of the main body portion, and is conveyed on the transfer conveyor. Arranged at a position where it can come into contact with the rubber material and the second rubber material ,
The protrusion forms a streak extending in the longitudinal direction in the first rubber material and the second rubber material.
The cross-sectional shape of the protrusion is rectangular.
Transport device. The transport device according to claim 1, wherein a plurality of the protrusions are provided apart from each other in the axial direction of the main body. The transport device according to claim 2, wherein three or more of the protrusions are provided at equal intervals in the axial direction of the main body. The conveyor according to any one of claims 1 to 3, wherein the distance from the support surface of the conveyor to the main body is larger than the thickness of the overlapping portion.

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