JP2019214470A - Conveyer device - Google Patents

Abstract

To prevent transport failure of a sheet material.SOLUTION: A conveyer device 1 for transporting a belt-like sheet material T, includes: a first conveyer 2; and a second conveyer 3 that is disposed separately from the first conveyer 2 and under the first conveyer 2 and transports in the reverse direction of the first conveyer 2. The conveyer device 1 further includes a movable guide roller 4 that moves a free end T1 on the downstream side of the sheet material T, which transfers from the first conveyer 2 to the second conveyer 3, into the transportation direction of the first conveyer 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a conveyor device for conveying sheet material.

  Patent Document 1 below discloses, as a transport conveyor device for transporting a belt-shaped rubber member, a second conveyor, and a third conveyor provided below the second conveyor with a gap provided between the second conveyor and the second conveyor. Are described. The third conveyor returns the belt-shaped rubber member conveyed from the second conveyor, and conveys it.

  In such a conveyor device, when the downstream end of the belt-shaped rubber member drops onto the third conveyor from the second conveyor and moves on, the ends may be bent and overlap, resulting in poor conveyance. .

JP 2013-147320 A

  The present invention has been devised in view of the above situation, and has as its main object to provide a conveyor device capable of suppressing a conveyance failure of a sheet material.

  The present invention relates to a conveyor device for conveying a belt-shaped sheet material, wherein the first conveyor for conveying the sheet material in a first direction and the first conveyor are separated from the first conveyor. And a second conveyor for conveying the sheet material conveyed by the first conveyor in a second direction opposite to the first direction; and a second conveyor for conveying the sheet material in a second direction opposite to the first direction. A movable guide roller disposed between the first conveyor and the first conveyor, wherein the movable guide roller is provided so as to be movable in the first direction and the second direction. A free end on the downstream side in the transport direction of the sheet material moving on to the second conveyor is guided at a first position moved in the first direction.

  The conveyor device according to the present invention further includes a free end detection device for detecting the free end on the upstream side of the movable guide roller in the transport direction, wherein the movable guide roller is provided by the free end detection device. Preferably, when the free end is detected, it moves to the first position to guide the free end.

  The conveyor device according to the present invention is configured such that, when the free end is not detected by the free end detection device, the movable guide roller moves the non-free end of the sheet material at the second position moved in the second direction. It is desirable to guide.

  The conveyor device according to the present invention includes a plurality of guide rollers for guiding the sheet material between the first conveyor and the movable guide rollers, wherein the plurality of guide rollers are directed downward in the first direction. It is desirable to arrange them so as to form a slanted conveying surface that is slanted.

  In the conveyor device according to the present invention, it is preferable that the first position of the movable guide roller is located in the first direction from the inclined conveying surface.

  In the conveyor device according to the present invention, the movable guide roller guides the non-free end of the sheet material at a second position, and the second position of the movable guide roller is in the second direction relative to the inclined conveyance surface. It is desirable to be located in.

  The conveyor device according to the present invention includes a first conveyor, a second conveyor separated from the first conveyor and disposed below the first conveyor, and between the first conveyor and the second conveyor. And a movable guide roller disposed. The first conveyor conveys the sheet material in a first direction. The second conveyor conveys the sheet material conveyed by the first conveyor in a direction opposite to the first direction.

  The movable guide roller guides, at a first position moved in the first direction, a downstream free end of the sheet material that moves from the first conveyor to the second conveyor in the transport direction. Thereby, the free end can be transferred to the second conveyor while bending or the like is suppressed. Therefore, the conveyor device of the present invention can suppress the conveyance failure of the sheet material.

It is a typical side view of the conveyor device of one embodiment of the present invention. FIG. 2 is a side view when the movable guide roller of FIG. 1 is at a second position. It is a typical side view of the conveyor device of other embodiments.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic side view of a conveyor device 1 (hereinafter, may be simply referred to as “device 1”) of the present embodiment. The apparatus 1 of the present embodiment is for transporting a belt-shaped sheet material T.

  The sheet material T is formed of, for example, a deformable unvulcanized rubber extruded from a rubber extruder (not shown). In this embodiment, the sheet material T is used as a rubber member for a tire constituting a tire (not shown). For example, the sheet material (belt-shaped rubber) T conveyed by the apparatus 1 of the present embodiment preferably has a thickness t of about 8.7 to 37.0 mm and a width (not shown) of about 154 to 332 mm. Note that the sheet material T is not limited to a rubber member for a tire component.

  As shown in FIG. 1, the device 1 of the present embodiment includes a first conveyor 2, a second conveyor 3, and a movable guide roller 4. In the drawings, the Z direction indicates the direction of the vertical line, the X direction indicates a direction parallel to the horizontal plane, and the Y direction is a direction perpendicular to the Z direction and the X direction. In this specification, the downward direction in the Z direction is downward, and the upward direction is upward.

  The first conveyor 2 and the second conveyor 3 of the present embodiment are formed of, for example, a drive type belt conveyor having a known structure having a plurality of rollers a and an endless belt b. The first conveyor 2 and the second conveyor 3 are not limited to a belt conveyor, but may be, for example, a spherical conveyor or a roller conveyor having a well-known structure.

  In the present embodiment, the first conveyor 2 extends in the X direction, and can transport the sheet material T in the first direction F1.

  In the present embodiment, the second conveyor 3 is disposed below the first conveyor 2 separately from the first conveyor 2. The second conveyor 3 can convey the sheet material T conveyed by the first conveyor 2 in a second direction F2 opposite to the first direction F1. In the present specification, the first direction F1 is a direction parallel to the X direction and toward the right side in the drawing. Further, the second direction F2 is a direction parallel to the X direction and directed to the left side in the figure. The upstream side in the transport direction of the first conveyor 2 and the downstream side in the transport direction of the second conveyor 3 are in the second direction F2. The downstream side of the first conveyor 2 in the transport direction and the upstream side of the second conveyor 3 in the transport direction are the first direction F1.

  The movable guide roller 4 of the present embodiment is disposed between the first conveyor 2 and the second conveyor 3 in the Z direction.

  The movable guide roller 4 is, for example, a rotatable roller having a horizontal axis, and its outer peripheral surface 4a is formed of a rubber material. Such a movable guide roller 4 suppresses damage to the sheet material T when the sheet material T contacts the outer peripheral surface 4a.

  In the present embodiment, the movable guide roller 4 is supported by an arm 5 that can move three-dimensionally. Thereby, the movable guide roller 4 of the present embodiment is configured to be movable at least in the first direction F1 and the second direction F2. The arm 5 includes, for example, an actuator (not shown) including a well-known structure such as a cylinder and a ball screw.

  In the present embodiment, the movable guide roller 4 uses the arm 5 to move the free end T1 on the downstream side in the transport direction of the sheet material T that moves from the first conveyor 2 to the second conveyor 3 in the first direction F1. Guide at position P1. Thereby, the free end T <b> 1 can move to the second conveyor 3 while suppressing the bending, so that the conveyance failure of the sheet material T is suppressed. In the present specification, the “free end T1” refers to a portion of the sheet material T that can freely fall from the first conveyor 2 to the second conveyor 3. Further, in this specification, in the sheet material T straddling the first conveyor 2 and the second conveyor 3, a portion of the sheet material T which is conveyed from the first conveyor 2 to the second conveyor 3 without free falling is used. Is referred to as a non-free end T2.

  In the present embodiment, the upstream end 3e of the second conveyor 3 is located closer to the first direction F1 than the downstream outer end 2i of the first conveyor 2 in the present embodiment. Thereby, the free end T1 on the downstream side in the transport direction of the sheet material T can move onto the second conveyor 3 without protruding from the outer end 3e of the second conveyor 3. In order to more effectively exert the above-described operation, the distance L in the X direction between the outer end 2i on the downstream side of the first conveyor 2 and the outer end 3e on the upstream side of the second conveyor 3 is equal to the first conveyor 2. Is larger than the distance H in the Z direction between the outer end 2i of the second conveyor 3 and the outer end 3e of the second conveyor 3.

  Although not particularly limited, the transport speed of the first conveyor 2 and the transport speed of the second conveyor 3 are preferably 5 to 25 m / min, and more preferably 8 to 22 m / min.

  In the present embodiment, the device 1 further includes a free end detection device (hereinafter, sometimes simply referred to as a “detection device”) 8 and a plurality of devices disposed between the first conveyor 2 and the movable guide roller 4. Of the guide roller 9.

  The detection device 8 is for detecting the free end T1 on the upstream side of the movable guide roller 4 in the transport direction. The detection device 8 of the present embodiment detects the free end T1 of the sheet material T located on the first conveyor 2.

  In the present embodiment, the detection device 8 is configured as a non-contact type displacement sensor that detects the position of the sheet material T without contacting the sheet material T. As the displacement sensor, for example, a laser displacement meter or an ultrasonic displacement meter having a well-known structure is suitable. Note that the detection device 8 is not limited to such an embodiment, and various types including an imaging unit such as a camera may be employed. In the present embodiment, for example, the detection device 8 is supported by a frame (not shown) and provided above the first conveyor 2.

  In the present embodiment, the detection device 8 outputs an electric signal based on the presence or absence of the sheet material T. The electric signal output from the detection device 8 is input to, for example, the arithmetic unit 10. The arithmetic means 10 stores in advance information such as the length of the sheet material T, the transport speed of the first conveyor 2 or the transport speed of the second conveyor 3, for example. Then, the calculating means 10 calculates the position of the free end T1 based on, for example, the electric signal and the stored information.

  In the present embodiment, the calculating means 10 moves the movable guide roller 4 based on the position of the free end T1. For example, when the detecting device 8 detects the free end T1, the calculating means 10 calculates the moving timing and the moving speed of the movable guide roller 4 so as to guide the free end T1 of the sheet material T to the first position P1. I do. Specifically, for example, when the downstream end OneTe of the sheet material T is conveyed from the outer end 3e of the first conveyor 2 to a position of 0.5 to 2 m in the second direction F2, Is instructed to move the movable guide roller 4 to the first position P1. In addition, for example, when the detecting device 8 does not detect the free end T1, the calculating means 10 arranges the movable guide roller 4 at the second position P2 (shown in FIG. 2) moved in the second direction F2. The moving timing and the moving speed of the movable guide roller 4 are calculated.

  The calculation means 10 outputs an electric signal based on, for example, the movement timing and movement speed of the movable guide roller 4 to the actuator of the arm 5. As the arm 5 moves, the movable guide roller 4 moves to a first position P1 and a second position P2. As the arithmetic means 10, for example, those having a known structure such as a programmable sequencer, a microcomputer, and a personal computer are desirable.

  The plurality of guide rollers 9 of the present embodiment are arranged between the first conveyor 2 and the first position P1 of the movable guide roller 4 in the Z direction. The guide roller 9 guides the sheet material T to the second conveyor 3.

  In the present embodiment, each guide roller 9 is a roller including a rotatable outer peripheral surface 9a. It is desirable that the rotation axis of the guide roller 9 is aligned parallel to the rotation axis of the roller a of the first conveyor 2 or the second conveyor 3. In the present embodiment, the rotation axis of the guide roller 9 extends parallel to the Y direction.

  In the present embodiment, each guide roller 9 is arranged so as to form an inclined conveyance surface 11 (shown in FIG. 3) that is inclined downward in the first direction F1. The inclined conveying surface 11 is a surface for guiding the sheet material T, and is formed in a straight line in the present embodiment. Such a slanted conveying surface 11 is useful for reducing the falling distance of the sheet material T from the first conveyor 2 to the second conveyor 3 to suppress conveyance failure. The inclined conveyance surface 11 is not limited to such an embodiment, and may be, for example, an embodiment including an upwardly or downwardly convex arc-shaped portion (not shown).

  In the present embodiment, the inclined conveying surface 11 is formed by the outer peripheral surface 9a of each guide roller 9. Note that the inclined conveying surface 11 is not limited to such an aspect, and may be formed by, for example, an endless belt (not shown), like the first conveyor 2.

  The plurality of guide rollers 9 are arranged, for example, at the same pitch x1 in the X direction. Further, the plurality of guide rollers 9 are arranged, for example, at the same pitch z1 in the Z direction. Thereby, the sheet material T is smoothly conveyed downward. Note that the plurality of guide rollers 9 are not limited to such identical pitches x1, z1.

  FIG. 1 shows a state in which the free end T1 is located between the first conveyor 2 and the second conveyor 3. As shown in FIG. 1, in this state, the movable guide roller 4 is located at a first position P1 on the inclined conveyance surface 11 on the first direction F1 side. As a result, the free end T1 of the sheet material T falls in a state where the free end T1 extends below the inclined conveyance surface 11 in the first direction F1 side, so that conveyance failure on the second conveyor 3 due to bending is suppressed. The first position P1 is preferably a position where the outer peripheral surface 4a of the movable guide roller 4 forms an extended surface 11c which extends the inclined conveying surface 11 smoothly downward. As a result, a force in the first direction F1 acts on the free end T1 moderately, and the bending is more effectively suppressed. When the first position P1 is closer to the first direction F1 than the extension surface 11c, the sheet material T around the movable guide roller 4 may be greatly bent and damage the sheet material T. In the present embodiment, the first position P1 is located in the middle of the distance between the first conveyor 2 and the second conveyor 3 in the Z direction. In the state of FIG. 1, the transport speed of the first conveyor 2 and the transport speed of the second conveyor 3 are the same.

  FIG. 2 is a side view of the apparatus 1 with the non-free end T2 located between the first conveyor 2 and the second conveyor 3. As shown in FIG. 2, the movable guide roller 4 is located at a second position P2 in the second direction F2 with respect to the inclined conveyance surface 11 in this state. At this time, when the sheet material T comes into contact with the movable guide roller 4, the sheet material T is more smoothly conveyed to the second conveyor 3. The second position P2 is not limited to such a mode, and may be arranged, for example, at a position where the movable guide roller 4 does not come into contact with the sheet material T (toward the second direction F2). In this manner, when the movable guide roller 4 is located at the second position P2, the bending load on the sheet material T by the movable guide roller 4 is smaller than when the movable guide roller 4 is located at the first position P1, and the sheet material T Damage can be suppressed. In the state of FIG. 2, the transport speed of the first conveyor 2 and the transport speed of the second conveyor 3 are the same. However, until the upstream end (not shown) of the sheet material T moves from the first conveyor 2 to the second conveyor 3 and moves in the second direction F2, the conveying speed of the second conveyor 3 is equal to the first conveyor. 2 is higher than the transfer speed. As a result, a tensile force in the second direction F2 is generated at one end on the upstream side of the sheet material T, so that bending of the sheet material T at the time of transfer is suppressed.

  FIG. 3 is a side view showing an apparatus 1t according to another embodiment. In FIG. 3, the same components as those of the device 1 of the present embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. As shown in FIG. 3, in the apparatus 1t of this embodiment, the movable guide roller 4 further guides the free end T1 from the first position P1 to the third position P3. In this embodiment, the third position P3 is located below the first position P1 and on the first direction F1 side. In such a device 1t, the falling distance of the free end T1 is further reduced, and the bending is further suppressed. In order to more effectively exert such an effect, it is desirable that the third position P3 is, for example, a position where the outer peripheral surface 4a of the movable guide roller 4 forms the extension surface 11c.

  As described above, particularly preferred embodiments of the present invention have been described in detail. However, the present invention is not limited to the illustrated embodiments, and can be implemented in various forms.

A conveyor device having the basic structure of FIG. 1 was tested for bending of the sheet material as it was conveyed from the first conveyor to the second conveyor. The test was evaluated by the tester's visual sensory. The results are shown on a scale of 1 to 3, with higher values being better. The main common specifications are as follows.
Sheet material: unvulcanized rubber (width: 298 mm, thickness: 26.5 mm, length: 55 m)
Distance H in the Z direction between the first conveyor and the second conveyor: 1120 mm
Distance of the first position P1 from the second conveyor in the Z direction: 600 mm
Transport speed of the first and second conveyors: 15 m / min
When the downstream end Te of the sheet material is 1 m from the downstream outer end of the first conveyor toward the second direction F2, the movable guide roller is brought into contact with the sheet material at the first position.
The second position P2 is the position shown in FIG.
Table 1 shows the test results and the like.

  As a result of the test, it was confirmed that the conveyor device of the example reduced the bending of the sheet material as compared with the conveyor device of the comparative example.

DESCRIPTION OF SYMBOLS 1 Conveyor device 2 1st conveyor 3 2nd conveyor 4 Movable guide roller T Sheet material T1 Free end

Claims (6)

A conveyor device for conveying a belt-shaped sheet material,
A first conveyor for conveying the sheet material in a first direction;
The first conveyor is disposed below the first conveyor separately from the first conveyor, and transports the sheet material transported by the first conveyor in a second direction opposite to the first direction. A second conveyor,
A movable guide roller disposed between the first conveyor and the second conveyor,
The movable guide roller is provided movably in the first direction and the second direction,
The movable guide roller guides, at a first position moved in the first direction, a free end on the downstream side in the transport direction of the sheet material that moves from the first conveyor to the second conveyor,
Conveyor device. On the upstream side in the transport direction from the movable guide roller, further includes a free end detection device for detecting the free end,
The conveyor device according to claim 1, wherein the movable guide roller moves to the first position to guide the free end when the free end is detected by the free end detection device.   3. The non-free end of the sheet material according to claim 2, wherein the movable guide roller guides the non-free end of the sheet material at a second position moved in the second direction when the free end is not detected by the free end detection device. Conveyor device. Including a plurality of guide rollers for guiding the sheet material between the first conveyor and the movable guide roller,
The conveyor device according to any one of claims 1 to 3, wherein the plurality of guide rollers are arranged so as to form an inclined conveyance surface inclined in the first direction downward.   The conveyor device according to claim 4, wherein the first position of the movable guide roller is located in the first direction from above the inclined conveying surface. The movable guide roller guides a non-free end of the sheet material at a second position,
The conveyor device according to claim 4, wherein the second position of the movable guide roller is located in the second direction with respect to the inclined conveyance surface.

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