JP6025183B1 - Column support device and roll carrier - Google Patents

Abstract

[PROBLEMS] To provide a column support device and a roll transport vehicle that can stably support a plurality of types of columns having different diameters and can reliably detect that the columns are supported. To do. A column support device 20 includes two support rollers 31 and 32 provided in parallel and spaced apart from each other to support a core material, and the core material is supported by the support rollers 31 and 32. Sensor 40 disposed between the support rollers 31 and 32 to detect the presence of the sensor, and a plurality of core materials having different diameters can be supported, and the lower end of the core material supported by the support rollers 31 and 32 and the sensor In order to adjust the distance to 40, when supporting a core material with a large diameter, the interval between the support rollers 31, 32 is widened. When supporting a core material with a small diameter, the support rollers 31, 32 And a roller interval adjusting mechanism 50 that narrows the interval. [Selection] Figure 2

Description

  The present invention relates to a column body support device and a roll body transport vehicle that supports a column body and detects that the column body is supported.

  Generally, a roll transport vehicle that transports a roll body includes a column body support device that supports the column body. The columnar support device has a configuration for supporting the roll body and a configuration for supporting the core material of the roll body protruding from the end of the roll body.

  The columnar support device of Patent Document 1 includes two outer support rollers and two inner support rollers, and has a configuration in which the roll body is supported by the support rollers. The outer and inner support rollers are arranged in two upper and lower stages, and the interval between the two outer support rollers and the interval between the two inner support rollers are different from each other. By properly using the outer and inner support rollers according to the size of the body diameter, it is possible to support a plurality of types of roll bodies having different diameters.

  By the way, in order to detect that the column is supported by the support roller, for example, it is conceivable to use a non-contact sensor that reacts to the column disposed on the support roller. In this case, the distance from the column to the sensor is required to be an optimum distance for the sensor to react to the column. However, Patent Document 1 does not disclose providing a sensor that reacts to a column body, and does not consider at all that the sensor reliably detects that the column body is supported.

Japanese Patent Laid-Open No. 10-279140

  The present invention has been made in view of the above circumstances, and can support a plurality of types of pillars having different diameters, and can reliably detect that the pillars are supported. It is an object of the present invention to provide a body support device and a roll transport vehicle.

In order to solve the above-mentioned problem, the present invention according to claim 1 is directed to two support rollers provided parallel to each other with a space therebetween in order to support the column body, and the column body supported by the support roller. A sensor arranged between the two support rollers to detect that it is being made, and a plurality of types of the pillars having different diameters can be supported, and the lower ends of the pillars supported by the support rollers In order to adjust the distance between the sensor and the sensor, when supporting the column body having a large diameter, the interval between the two support rollers is widened, and when supporting the column body having a small diameter, 2 is used. A roller interval adjustment mechanism that narrows the interval between the two support rollers, and a lift mechanism that raises and lowers the two support rollers and the sensor. The roller interval adjustment mechanism includes the lift mechanism and the lift mechanism. Two before the movement Is constituted by a link mechanism for moving the support rollers in the horizontal direction, the link mechanism is characterized by varying the distance between the two of the supporting rollers increase operation and during downward movement of the lift mechanism.

The present invention is defined in claim 2, in columnar body supporting apparatus according to claim 1, wherein the link mechanism includes an arm support which supports a pair of arms connected to each of said support rollers, said pair of arms Each of the pair of arms is connected between the two support rollers so as to be pivotable about a pivot axis parallel to a rotation axis of the support roller, and the lift mechanism is A linear actuator that expands and contracts in the vertical direction, and a lifting body that moves up and down with respect to the arm support by expansion and contraction of the linear actuator, and the lifting body rotatably supports the sensor and the support roller. The roller support is provided so as to be slidable in a horizontal direction perpendicular to the rotating shaft of the support roller with respect to the lifting and lowering body. .

According to a third aspect of the present invention, in the columnar body support device according to the first or second aspect , the sensor is a non-contact type proximity sensor.

The present invention described in claim 4 includes the columnar support device according to any one of claims 1 to 3 .

  According to the present invention, it is possible to stably support a plurality of types of column bodies having different diameters, and it is possible to reliably detect that the column bodies are supported. Car can be provided.

It is a block diagram of the roll body conveyance vehicle which concerns on one Embodiment of this invention. It is a block diagram of the columnar support apparatus which concerns on the embodiment, Comprising: (A) is a side view, (B) is a front view. It is a front view of a column body support device in the case of supporting a column body with a large diameter. It is a front view of a column body support device in the case of supporting a column body with a small diameter.

  An embodiment of the present invention will be described with reference to the drawings. In addition, the X direction, the Y direction, and the Z direction indicated by arrows in the drawing represent directions orthogonal to each other. The X direction and the Y direction are horizontal directions, and the Z direction is a vertical direction perpendicular to the horizontal direction.

  As shown in FIG. 1, the roll body transport vehicle 1 is an automatic transport vehicle that unmannedly transports the roll body 2, and is a column that supports the traveling vehicle 10 that travels on the road surface and the core material 2 </ b> A of the roll body 2. And a body support device 20. The roll body transport vehicle 1 executes the automatic traveling program based on the detection result of the roll body 2 by the sensor 40 described later.

  The roll body 2 is a cylindrical body made of a flexible sheet wound around the core material 2A. The core material 2 </ b> A is a cylindrical body formed of metal, and protrudes from both ends of the roll body 2 in the X direction that is the axial direction of the roll body 2.

  The traveling vehicle 10 has wheels 11 and 12 provided at intervals in the X direction. At least one of the wheels 11 and 12 functions as a drive wheel driven by an electric motor. In addition, at least one of the wheels 11 and 12 functions as a steered wheel whose steering angle can be changed.

  The columnar support device 20 is provided at each of both ends of the traveling vehicle 10 in the X direction. The two columnar support devices 20 support the roll body 2 via the core material 2A by supporting both ends of the core material 2A. Since the two columnar support devices 20 have the same configuration, the description and illustration of the configuration of the one columnar support device 20 will be omitted below.

  As shown in FIG. 2, the columnar support device 20 detects two support rollers 31 and 32 for supporting the core material 2 </ b> A and that the core material 2 </ b> A is supported by the support rollers 31 and 32. Sensor 40 and a roller interval adjusting mechanism 50 are provided.

  The support rollers 31 and 32 are provided at intervals in the Y direction and extend parallel to the X direction. The outer diameter of the support roller 31 and the outer diameter of the support roller 32 are the same size. The support roller 31 is provided to be rotatable about a rotation axis R1 parallel to the X direction, and the support roller 32 is provided to be rotatable about a rotation axis R2 parallel to the X direction. The height of the rotation axis R1 and the height of the rotation axis R2 are the same.

  The sensor 40 is disposed between the support rollers 31 and 32 so as not to protrude upward from the support rollers 31 and 32. The sensor 40 is a non-contact type high-frequency oscillation type proximity sensor, and is provided so as to react to a metal located above the sensor 40. The sensor 40 generates a high-frequency magnetic field by an oscillation circuit, and detects the attenuation or stop of oscillation caused by the core material 2A approaching the high-frequency magnetic field, whereby the core material 2A is supported by the support rollers 31 and 32. Detect that The sensor 40 detects the core material 2A when the distance from the core material 2A becomes 10 mm, for example.

  The roller interval adjusting mechanism 50 can support a plurality of types of core materials 2A having different diameters, and adjusts the distance between the lower end of the core material 2A supported by the support rollers 31 and 32 and the sensor 40. , 32 is adjusted. The roller interval adjusting mechanism 50 is configured by a lift mechanism 60 that moves the support rollers 31 and 32 and the sensor 40 up and down, and a link mechanism 70 that moves the support rollers 31 and 32 in the Y direction in accordance with the operation of the lift mechanism 60. Yes.

  The lift mechanism 60 moves the support rollers 31 and 32 and the sensor 40 up and down with respect to the traveling vehicle 10. The lift mechanism 60 includes a base body 61, a hydraulic cylinder 62 that expands and contracts in the Z direction, and an elevating body 63 that moves up and down relative to the base body 61 by extension and contraction of the hydraulic cylinder 62. 2 to 4, in order to illustrate the components hidden by the elevating body 63, only the outer shape of the elevating body 63 is illustrated by a two-dot chain line.

  The base 61 is constituted by the traveling vehicle 10. The base body 61 is provided with a pair of rails 61A extending in the Z direction. The base body 61 is provided with a cylinder connection portion 61B connected to the hydraulic cylinder 62, and the cylinder connection portion 61B is disposed between the pair of rails 61A in the Y direction.

  The hydraulic cylinder 62 is a linear actuator that operates by the pressure of hydraulic oil supplied from an electric pump (not shown). The lower end portion of the hydraulic cylinder 62 is connected to the cylinder connecting portion 61 </ b> B of the base body 61, and the upper end portion of the hydraulic cylinder 62 is connected to the elevating body 63.

  The elevating body 63 moves up and down with respect to the traveling vehicle 10. The lifting body 63 is provided with a sensor 40, a pair of sliders 63A, a rail 63B, and a pair of roller supports 63C. The sensor 40, the pair of sliders 63 </ b> A, and the rail 63 </ b> B are fixed to the elevating body 63 and elevate together with the elevating body 63.

  The pair of sliders 63A slide relative to the pair of rails 61A and guide the movement of the elevating body 63 in the Z direction. The rail 63B extends in the Y direction, and a pair of roller supporters 63C is provided on the rail 63B. The pair of roller supporters 63C rotatably support the support rollers 31 and 32 via rolling bearings (not shown). Also, the roller support 63C moves in the Y direction together with the support rollers 31 and 32 by sliding with respect to the rail 63B. In FIG. 2A, the rail 63B and the pair of roller supporters 63C are not shown.

  The link mechanism 70 converts the movement in which the elevating body 63 moves up and down into the movement in which the support rollers 31 and 32 move in the Y direction. The link mechanism 70 includes a pair of arms 71 connected to the support rollers 31 and 32, and an arm support 72.

  The pair of arms 71 are connected so as to be capable of turning independently of each other about a predetermined turning axis C. The turning axis C is an axis located between the support rollers 31 and 32 and parallel to the rotation axes R1 and R2. One end of the pair of arms 71 is connected to the arm support 72, and the other end is connected to the support rollers 31 and 32.

  The arm support 72 supports the pair of arms 71 so as to be rotatable. The lower end portion of the arm support 72 is connected to the base body 61, and the upper end portion of the arm support 72 is connected to the pair of arms 71. Since the arm support body 72 is fixed to the base body 61, the pivot axis C does not move up and down as the elevating body 63 moves up and down.

The operation of the roller interval adjusting mechanism 50 will be described.
When the elevating body 63 moves up and down due to the expansion and contraction of the hydraulic cylinder 62, the support rollers 31 and 32 supported by the roller support body 63C together with the elevating body 63 move up and down. That is, the lift mechanism 60 moves up and down the support rollers 31 and 32. At this time, the link mechanism 70 changes the interval between the support rollers 31 and 32. Specifically, the roller support 63C slides at the same time as the arm 71 turns around the turning axis C. By turning the arm 71 so that the pair of roller supports 63C are distant from each other, the distance between the support rollers 31, 32 is widened, and by supporting the arm 71 so that the pair of roller supports 63C is close to each other, the support is provided. The interval between the rollers 31 and 32 is narrowed. Thus, the roller interval adjusting mechanism 50 adjusts the interval between the support rollers 31 and 32 in accordance with a plurality of types of core materials 2A having different diameters.

  FIG. 3 shows the distance between the support rollers 31 and 32 when the core material 2A having a large diameter is supported. FIG. 4 shows the distance between the support rollers 31 and 32 when the core material 2A having a small diameter is supported.

  As shown in FIGS. 3 and 4, by adjusting the distance between the support rollers 31, 32 by the roller distance adjusting mechanism 50, the support rollers 31, 32 can support a plurality of types of core materials 2A having different diameters. Thus, the distance between the lower ends of the plurality of types of core materials 2A supported by the support rollers 31 and 32 and the sensor 40 is constant.

  As shown in FIG. 3, when supporting the core material 2 </ b> A having a large diameter, the roller interval adjusting mechanism 50 is provided with the support rollers 31 and 32 compared to the case of supporting the core material 2 </ b> A having a small diameter (see FIG. 4). Increase the interval. On the other hand, as shown in FIG. 4, when supporting the core material 2 </ b> A having a small diameter, the roller interval adjusting mechanism 50 is provided with the support roller 31 compared to the case of supporting the core material 2 </ b> A having a large diameter (see FIG. 3). , 32 is narrowed.

  When the lift mechanism 60 shown in FIG. 3 lowers the support rollers 31 and 32 and the sensor 40, the link mechanism 70 narrows the interval between the support rollers 31 and 32. When the lift mechanism 60 shown in FIG. 4 raises the support rollers 31 and 32 and the sensor 40, the link mechanism 70 widens the distance between the support rollers 31 and 32. That is, the link mechanism 70 widens the distance between the support rollers 31 and 32 when the lift mechanism 60 is raised, and narrows the distance between the support rollers 31 and 32 when the lift mechanism 60 is lowered.

In the present embodiment, the following effects can be obtained.
(1) When supporting the core material 2A (column) having a large diameter, the roller interval adjusting mechanism 50 increases the distance between the two support rollers 31 and 32 and supports the core material 2A having a small diameter. A roller interval adjusting mechanism 50 that narrows the interval between the two support rollers 31 and 32 is provided. For this reason, by adjusting the interval between the two support rollers 31 and 32, it is possible to stably support a plurality of types of core materials 2 </ b> A having different diameters with the two support rollers 31 and 32. Furthermore, since the distance between the lower end of the core material 2A supported by the support rollers 31 and 32 and the sensor 40 can be set to an optimum distance for the sensor 40 to react to the core material 2A, the core material 2A is supported. It can be detected reliably.

  (2) The column body support device 20 includes a lift mechanism 60 that raises and lowers the two support rollers 31 and 32 and the sensor 40. For this reason, the height which supports core material 2A (column body) can be changed, for example, core material 2A with a large diameter is supported by support rollers 31 and 32 in a low position, and a core material with a small diameter. 2A can be supported by support rollers 31 and 32 located at a high position. In this way, when supporting a plurality of types of core materials 2A having different diameters, the position of the central axis A (see FIGS. 3 and 4) of the core material 2A can be prevented from changing.

  (3) The roller interval adjusting mechanism 50 includes a lift mechanism 60 and a link mechanism 70, and the link mechanism 70 widens the interval between the two support rollers 31 and 32 when the lift mechanism 60 is lifted. The distance between the two support rollers 31 and 32 is reduced during the lowering operation. For this reason, the height for supporting the core material 2A (column body) can be changed simultaneously with the adjustment of the distance between the two support rollers 31 and 32.

  (4) The lift mechanism 60 includes an elevating body 63 that moves up and down with respect to the arm support 72 by expansion and contraction of a hydraulic cylinder 62 (linear actuator). The elevating body 63 can rotate the sensor 40 and the support rollers 31 and 32. And a pair of roller supports 63C. Therefore, the sensor 40 and the support rollers 31 and 32 supported by the pair of roller support bodies 63C can be moved up and down by expanding and contracting the hydraulic cylinder 62 to move the lift body 63 up and down. The link mechanism 70 includes a pair of arms 71 connected to each of the support rollers 31 and 32, and each of the pair of arms 71 is a turning axis C parallel to the rotation axes R 1 and R 2 of the support rollers 31 and 32. The pair of roller support members 63C are provided so as to be slidable in the Y direction (horizontal direction perpendicular to the rotation axes R1 and R2 of the support rollers 31 and 32) with respect to the elevating body 63. ing. For this reason, by raising and lowering the support rollers 31 and 32 with respect to the arm support 72, the pair of arms 71 are turned about the turning axis C, and at the same time, the pair of roller supports 63C are slid in the Y direction. Can do.

  (5) Since the sensor 40 is constituted by a non-contact proximity sensor, it is detected that the column body is supported by the support rollers 31 and 32 without damaging the column body (core material 2A). Can do.

  (6) Since the roll body transport vehicle 1 includes the column body support device 20 that exhibits the above effects, the roll body 2 can be stably transported by stably supporting the core material 2A (column body). it can. In addition, the automatic traveling program can be appropriately executed by reliably detecting that the core material 2A is supported.

  The present invention is not limited to the above embodiment, and the above configuration can be changed as appropriate. For example, the following modifications can be implemented, and the following modifications can be combined.

  -The structure of the lift mechanism 60 may be changed as long as the support rollers 31, 32 and the sensor 40 can be moved up and down. For example, instead of the hydraulic cylinder 62, an electric linear actuator constituted by a ball screw and an electric motor may be used.

  If the distance between the support rollers 31 and 32 can be adjusted, the configuration of the link mechanism 70 may be changed. Further, the link mechanism 70 may be omitted from the roller interval adjusting mechanism 50 as long as the interval between the support rollers 31 and 32 can be adjusted. In this case, for example, the distance between the support rollers 31 and 32 can be adjusted by sliding the roller support 63C on the rail 63B using an actuator having a configuration different from that of the hydraulic cylinder 62.

  If the position of the central axis A of the core material 2A can be allowed to change when supporting a plurality of types of core materials 2A having different diameters, the lift mechanism 60 is omitted from the roller interval adjustment mechanism 50. Also good. In this case, the distance between the support rollers 31 and 32 can be adjusted by providing an actuator that slides the roller support 63C on the rail 63B.

  -As long as it can react with 2A of core materials, you may change the structure of the sensor 40. FIG. For example, instead of the sensor 40, a magnetic proximity sensor or a capacitive proximity sensor may be used. Further, instead of the sensor 40, a contact type sensor can be used.

  If the sensor 40 can react to a plurality of types of core materials 2A having different diameters, the roller interval adjusting mechanism 50 is a distance between the lower end of the plurality of types of core materials 2A supported by the support rollers 31 and 32 and the sensor 40. Need not be kept constant. That is, the distance between the lower end of the plurality of types of core materials 2A supported by the support rollers 31 and 32 and the sensor 40 may be maintained within a predetermined range in which the sensor 40 can react to the core material 2A.

  The column body support device 20 can directly support the roll body 2 instead of the core material 2A. Further, the column body support device 20 can also support a column body having a polygonal cross section instead of the column body.

DESCRIPTION OF SYMBOLS 1 Roll body conveyance vehicle 2 Roll body 2A Core material (column body)
DESCRIPTION OF SYMBOLS 10 Traveling vehicle 20 Column body support apparatus 31 and 32 Support roller 40 Sensor 50 Roller space adjustment mechanism 60 Lift mechanism 61 Base 61A Rail 61B Cylinder connection part 62 Hydraulic cylinder (linear actuator)
63 Lifting body 63A Slider 63B Rail 63C Roller support 70 Link mechanism 71 Arm 72 Arm support A Center axis C Rotating axis R1 Rotating axis R2 Rotating axis X X direction Y Y direction (horizontal direction)
Z Z direction (vertical direction)

Claims (4)

Two support rollers provided parallel to each other with a space therebetween to support the column,
A sensor disposed between the two support rollers to detect that the column is supported by the support rollers;
In order to support a plurality of types of pillars having different diameters, and to support the pillars having a large diameter in order to adjust the distance between the lower end of the pillars supported by the support roller and the sensor. A roller interval adjustment mechanism that increases the interval between the two support rollers and supports the column body having a small diameter, and reduces the interval between the two support rollers ;
A lift mechanism for raising and lowering the two support rollers and the sensor;
The roller interval adjustment mechanism is configured by the lift mechanism and a link mechanism that moves the two support rollers in a horizontal direction in accordance with the operation of the lift mechanism.
The said link mechanism changes the space | interval of two said support rollers at the time of the raise operation | movement of the said lift mechanism, and a downward motion, The columnar support apparatus characterized by the above-mentioned . The link mechanism includes a pair of arms connected to each of the support rollers, and an arm support that supports the pair of arms,
Each of the pair of arms is connected between the two support rollers so as to be pivotable around a pivot axis parallel to the rotation axis of the support roller,
The lift mechanism includes a linear actuator that expands and contracts in the vertical direction, and a lifting body that moves up and down with respect to the arm support by the expansion and contraction of the linear actuator,
The lifting body includes the sensor and a pair of roller supports that rotatably support the support roller,
The column support apparatus according to claim 1 , wherein the roller support is provided so as to be slidable in a horizontal direction perpendicular to a rotation axis of the support roller with respect to the elevating body. The columnar support device according to claim 1 , wherein the sensor is configured by a non-contact proximity sensor. A roll transport vehicle comprising the column support device according to any one of claims 1 to 3 .

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