WO2014006707A1 - 搬送コンベヤ及び搬送設備(transport conveyer and transport facility) - Google Patents
搬送コンベヤ及び搬送設備(transport conveyer and transport facility) Download PDFInfo
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- WO2014006707A1 WO2014006707A1 PCT/JP2012/067110 JP2012067110W WO2014006707A1 WO 2014006707 A1 WO2014006707 A1 WO 2014006707A1 JP 2012067110 W JP2012067110 W JP 2012067110W WO 2014006707 A1 WO2014006707 A1 WO 2014006707A1
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- conveyor
- upstream
- downstream
- virtual route
- article
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G13/00—Roller-ways
- B65G13/08—Roller-ways of curved form; with branch-offs
- B65G13/10—Switching arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/52—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices
- B65G47/53—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices between conveyors which cross one another
- B65G47/54—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices between conveyors which cross one another at least one of which is a roller-way
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
Definitions
- the present invention relates to an upstream conveyor portion that places and conveys a rectangular article in plan view along an upstream virtual route line, and is connected to the downstream side of the upstream conveyor portion so that the article is connected to the downstream virtual route line.
- a downstream conveyor portion that is placed and conveyed, the upstream virtual route line is set in an arc shape, and the upstream conveyor portion has a side of the article along a tangent line of the upstream virtual route line
- the present invention relates to a transport conveyor configured to place and transport an article while rotating an article about a longitudinal axis so as to be in an upstream position, and a transport facility including the transport conveyor.
- Such a conveyor conveys the downstream conveyor portion downstream of the upstream conveyor portion, and in the upstream conveyor portion, the article is circularly arranged along the upstream virtual route line set in an arc shape (along the vertical direction). After being conveyed while being rotated around the axis), the article is continuously conveyed at the downstream conveyor portion (see, for example, Patent Document 1).
- a curved roller conveyor device 51 in which an upstream virtual route line is set in an arc shape is provided as an upstream conveyor portion, and a downstream conveyor portion is provided as a downstream conveyor portion.
- a linear roller conveyor device 1 in which virtual path lines are set in a straight line is provided, and an article is conveyed in the downstream conveyor portion without rotating around a vertical axis. Moreover, in such a conveyance conveyor, when articles
- a guide body is provided for guiding the article in contact with the outer peripheral surface of the article.
- the upstream conveyor portion is configured to convey the article while rotating around the vertical axis along the upstream virtual route line set in an arc shape, and the downstream side If the conveyor part is configured to convey articles without rotating about the longitudinal axis along a linear downstream path line, the connection between the upstream conveyor part and the downstream conveyor part Since the posture of the article in plan view is shifted from the downstream attitude along the downstream virtual route line along the side of the article, the article posture is deviated from the downstream attitude. It was suppressed by bringing the guide body into contact with the outer peripheral surface.
- the guide body is brought into contact with the outer peripheral surface of the article to prevent the article's posture from greatly deviating from the downstream posture, the article may be worn by the guide body coming into contact with the outer peripheral surface of the article. Therefore, it is desirable to avoid the article from contacting the guide body as much as possible.
- the transport conveyor according to the present invention is connected to the downstream side of the upstream conveyor part for transporting a rectangular article in plan view along the upstream virtual route line, and connected to the downstream side of the upstream conveyor part.
- a downstream conveyor portion mounted and transported along the route line, the upstream virtual route line is set in an arc shape, and the upstream conveyor portion is connected to the upstream virtual route line tangent to the article.
- the article is configured to be placed and conveyed while rotating around the longitudinal axis so as to be in the upstream posture along the side, and the first characteristic configuration is A guide body that is provided along the upstream virtual route line and the downstream virtual route line and guides the article along the upstream virtual route line and the downstream virtual route line by contacting the outer peripheral surface of the article.
- the upstream conveyor portion is connected to the downstream virtual route line, the tangent line at the downstream end of the upstream virtual route line, and the downstream virtual route line Is provided in a state where the upstream side end or the tangent at the upstream side end is at the same angle,
- the article is placed and conveyed at a downstream end of the upstream conveyor portion and the amount of rotation of the article accompanying conveyance by the upstream conveyor portion is equal to or less than the rotation amount caused by the upstream conveyor portion, or Rotation that is provided at the upstream end of the downstream conveyor portion and places and conveys the article in a state in which the rotation amount of the article accompanying the conveyance by the downstream conveyor portion is greater than or equal to the rotation amount caused by the downstream conveyor portion.
- An operation conveyance device is provided.
- the amount of rotation of the article accompanying the transport of the upstream conveyor portion is less than the rotation amount caused by the upstream conveyor portion.
- the rotational amount of the article accompanying the transport of the downstream conveyor portion is greater than or equal to the rotational amount attributable to the downstream conveyor portion. In this state, the article is placed and conveyed.
- the bottom rear part of the article is more easily applied with propulsive force than the bottom front part, and the article front
- the propulsive force with respect to the rear part of the article becomes dominant, and the article is placed and conveyed while rotating around the longitudinal axis so as to be directed to the upstream posture in the same manner as when conveyed on the upstream conveyor portion. For this reason, when the article is transferred from the upstream conveyor portion to the downstream conveyor portion, the article is considered to be greatly deviated from the downstream posture.
- a rotational operation transfer device is provided at the downstream end of the upstream conveyor portion, and the article is placed in a state where the rotation amount of the article accompanying the conveyance of the upstream conveyor portion is equal to or less than the rotation amount caused by the upstream conveyor portion.
- Articles are transported or provided with a rotational operation transport device at the upstream end of the downstream conveyor portion, and the amount of rotation of the articles accompanying the conveyance of the downstream conveyor portion is greater than the amount of rotation caused by the downstream conveyor portion. Is placed and conveyed.
- the upstream conveyor part applies a driving force to the rear part of the article, so that the article is conveyed by the upstream conveyor part.
- the propulsive force on the article by the rotary operation conveying device acts in a direction to suppress the rotation of the article with respect to the front part of the article, the article is greatly increased from the downstream posture. It can prevent shifting.
- the article when the article is transferred from the upstream conveyor portion to the downstream conveyor portion, the deviation of the article from the downstream posture is suppressed, so that the article is within the set lateral width set in advance with respect to the conveyor. Since it is easy to be accommodated, the article can be easily conveyed from the upstream conveyor portion to the downstream conveyor portion without bringing the article into contact with the guide body as much as possible. If the article is greatly collapsed from the upstream or downstream position due to a conveyance mistake or the like and the article is about to fall out of the set lateral width, the article is set by the guide body coming into contact with the outer peripheral surface of the article. It can be accommodated within the range of the width, and the fall of the article from the conveyor can be prevented beforehand.
- the article can be placed and conveyed by the rotary operation conveying device at the downstream end of the upstream conveyor part or the upstream end of the downstream conveyor part, so that the article can be conveyed upstream without contacting the article as much as possible. It is possible to provide a transport conveyor that can easily transport articles from the conveyor portion to the downstream conveyor portion.
- the 2nd characteristic structure of the conveyance conveyor concerning this invention is set to the circular arc shape which the said upstream virtual route line in the said upstream conveyor part in the 1st characteristic structure of a conveyance conveyor bends in the 1st direction among the left-right directions.
- the downstream virtual route line in the downstream conveyor portion is set in an arc shape that bends in the second direction of the left and right directions, and the upstream conveyor portion and the downstream conveyor portion are in the upstream virtual route.
- the tangent at the downstream end of the line and the tangent at the upstream end of the downstream virtual route line are provided at the same angle.
- the upstream virtual route line in the upstream conveyor portion is set in an arc shape that bends in the first direction in the left-right direction
- the downstream virtual route line in the downstream conveyor portion is the second in the left-right direction. Therefore, the downstream virtual route line has an arc shape that bends in the opposite direction to the upstream virtual route line.
- the front part of the article that is transferred to the downstream conveyor portion is opposite to the bending direction of the downstream virtual route line. Therefore, compared to the case where the downstream virtual route line is set to be linear, the posture of the article is likely to deviate greatly from the downstream posture.
- the article is greatly deviated from the downstream posture. The article can be conveyed without any problem.
- a third characteristic configuration of the transport conveyor according to the present invention is the second characteristic configuration of the transport conveyor, wherein each of the upstream conveyor portion and the downstream conveyor portion is rotated by a driving roller that is rotationally driven by a driving device.
- the drive roller is configured to be driven by a roller that places and conveys articles, and is provided on the upstream side of the downstream end of the upstream conveyor portion, and the rotation axis of the drive roller is a curvature of the upstream virtual path line.
- the drive roller provided in a posture toward the center point and provided downstream of the upstream end of the downstream conveyor portion has a rotation axis directed toward the center of curvature of the downstream virtual path line.
- the drive roller provided in a posture and provided at the downstream end of the upstream conveyor portion or the upstream end of the downstream conveyor portion is provided as the rotational operation conveying device.
- the drive roller as the rotational operation transport device has a rotational axis that connects a midpoint of the upstream virtual route line and a midpoint of the downstream virtual route line and the upstream virtual route line. It exists in the point provided in the attitude
- the upstream conveyor On the upstream side of the downstream end of the portion, the article is conveyed while rotating around the longitudinal axis so that the side of the article is in the upstream posture along the tangent line of the upstream virtual line.
- the drive roller provided on the downstream side of the upstream end portion of the downstream conveyor portion is provided in such a posture that its rotation axis faces the center of curvature of the downstream virtual route line.
- the article On the downstream side of the upstream end of the portion, the article is conveyed while rotating around the longitudinal axis so that the side of the article is in the downstream posture along the tangent line of the upstream imaginary line.
- the drive roller as a rotation operation conveyance device provided at the downstream end of the upstream conveyor part or the upstream end of the downstream conveyor part has its rotation axis centered on the downstream virtual path line and the upstream virtual path. Since the rotation roller is provided in a posture orthogonal to the tangent at the connection point to which the line is connected, the drive roller as the rotation operation transport device is connected to the downstream virtual path line or the upstream virtual path line like the other drive rollers. Compared with the case where the posture is directed toward the center of curvature, the rotation of the posture of the article is suppressed at the downstream end of the upstream conveyor portion, or the posture of the article is rotated at the upstream end of the downstream conveyor portion. Can be increased.
- the rotational operation conveying device In the case where a plurality of driving rollers are provided as the rotational operation conveying device, the plurality of driving rollers can be provided in the same direction, so that the rotational operation conveying device can be easily provided. .
- the driving roller places an article in the curvature radius direction of the upstream virtual route line or the downstream virtual route line. It is in the point provided so that it may be located in the outward side rather than the rotatable driven roller to support.
- the drive roller is provided so as to be positioned on the outer side of the driven roller in the radius direction of curvature of the upstream virtual route line or the downstream virtual route line, thereby rotating the article around the vertical axis while maintaining an arc shape. Can be transported along the virtual route line. Since the driving roller and the driven roller are arranged and the article is placed and supported as described above, a general cylindrical roller can be used as the driving roller and the driven roller. It is easy to configure the driving roller and the driven roller without using any other roller.
- the first characteristic configuration of the transport facility according to the present invention is provided with a linear conveyor for placing and transporting articles along a straight virtual route line set in a straight line, and the first to fourth characteristic configurations of the transport conveyor. Is that it is provided as a branch conveyance conveyor that branches and conveys articles from the linear conveyor, or a merging conveyance conveyor that merges and conveys articles to the linear conveyor.
- the transport conveyor provided with the rotation operation transport device can be used for a branch transport conveyor that branches and transports articles from the straight conveyor, or a merging transport conveyor that joins and transports articles to the straight conveyor.
- the conveyance direction of articles is often changed in the middle, such as forming the virtual route line of the conveyor in an S shape.
- the rotary operation conveying device By providing the rotary operation conveying device, the article can be prevented from being greatly deviated from the downstream posture by the action of the rotary operation conveying device when the article is transferred from the upstream conveyor portion to the downstream conveyor portion. It is possible to provide a transport facility that can branch and join and transport articles in an appropriate posture without contacting them as much as possible.
- the linear conveyor includes a pair of transport units arranged in a state of being spaced apart in the lateral width direction of the linear conveyor, and both end portions of the article in the lateral width direction are mounted.
- the article is configured to be placed and conveyed along the straight virtual route line in the form of placing and supporting, and the conveying conveyor is connected between the pair of conveying units in the linear conveyor, and the linear conveyor
- the side portion is provided in a state where the conveyance surface is located at a height higher than the conveyance surfaces of the pair of conveyance units, and the connection portion is
- the transport position of the connection portion is higher than the transport surface of the pair of transport sections and the same height as the transport surface of the side sections, and the transport surface of the connection section is lower than the transport surfaces of the pair of transport sections. Move up and down to retreat position In that provided in the standing.
- the articles can be transported along the straight virtual route line without being branched from the straight conveyor by the transport action of the straight conveyor.
- the connecting part of the conveyor by moving the connecting part of the conveyor to the transport position, the article rides on the connecting part of the conveyor while the article on the linear conveyor is being transported.
- the article can be conveyed along the upstream virtual route line and the downstream virtual route line by branching from the straight virtual route line of the straight conveyor by the conveying action of the portion.
- the guide body is projected on the transport path, and the article is branched from the straight conveyor or joined to the straight conveyor by the guiding action of the guide body.
- a third characteristic configuration of the transport facility according to the present invention is the second characteristic configuration of the transport facility, wherein a plurality of the connection portions in the transport conveyor are provided along the straight virtual route line of the linear conveyor, Each of the connection portions is configured to be movable up and down separately.
- a plurality of connection portions in the conveyor are provided along the straight virtual route line of the straight conveyor, and each of the plurality of connection portions is configured to be movable up and down individually.
- the upstream connection portion can be moved downward to the retracted position when the article is transferred from the upstream connection portion to the downstream connection portion. Then, by moving the upstream connection portion down to the retracted position first, the article being conveyed by the linear conveyor can be moved to the downstream side even when the article is placed and conveyed at the downstream connection portion. Since it can accept in the location in which the connection part is provided, the space
- a plurality of driving rollers provided at the connection portion and driven to rotate by a driving device are the plurality of driving units.
- the first driving roller group that is a part has a smaller radius of curvature than the second driving roller group that is positioned closer to the side portion than the first driving roller group of the plurality of driving rollers. The point is that they are arranged side by side.
- the plurality of drive rollers provided in the connection portion has a restriction of being provided between the pair of conveyance units, when all of the plurality of drive rollers are provided in a state of being aligned along an arc having the same radius of curvature, although the driving roller cannot be provided in a wide range along the virtual route line, the first driving roller group which is a part of the driving rollers provided in the connection portion is replaced with the first driving roller group among the plurality of driving rollers.
- the drive rollers are provided in a wide range along the virtual route line by arranging them in a state where the radius of curvature is smaller than that of the second drive roller group located farther from the side portion in the direction along the virtual route line. Can do.
- the transport facility includes a straight line conveyor 1 for placing and transporting articles along a straight virtual route line L ⁇ b> 1 set in a straight line, and a curved virtual route line L ⁇ b> 2 set in an arc shape. It is configured to include a curved conveyor 2 (corresponding to a conveying conveyor) on which an article is placed and conveyed.
- the article in the present embodiment is a plastic large tray formed in a rectangular shape in plan view, with the longitudinal direction of the article along the conveying direction of the conveyor and the short direction of the article along the width direction of the conveyor. Be transported. The side along the longitudinal direction of the article corresponds to the side of the article.
- the guide body 3 is provided in the linear conveyor 1 along the straight virtual route line L1.
- the curved conveyor 2 is provided with a guide body 3 along a curved virtual route line L2 (an upstream virtual route line L3 and a downstream virtual route line L4 described later).
- These guide bodies 3 are provided at a position higher than the conveying surface of the linear conveyor 1 or the curved conveyor 2 by a set height in a state where the set lateral width is spaced on the left and right sides with respect to the conveying direction.
- the article By contacting the outer peripheral surface of the article including the side and the side, the article does not deviate from a preset horizontal width set in advance with respect to the straight conveyor 1 or the curved conveyor 2 and is along the straight virtual route line L1 or the curved virtual route line L2. It is configured to guide the movement of the article.
- the linear conveyor 1 (hereinafter referred to as a main linear conveyor 1 a) in which one end of the curved conveyor 2 is connected to an intermediate portion in the conveyance direction, and the other end of the curved conveyor 2 is disposed at the end in the conveying direction.
- a pair of linear conveyors 1 including a connected linear conveyor 1 (hereinafter referred to as a secondary linear conveyor 1b) is provided.
- the main straight conveyor 1a and the sub straight conveyor 1b are provided in a state in which the straight virtual route lines L1 serving as routes for conveying articles are parallel to each other.
- the curved conveyor 2 is provided as a branching conveyor for branching and transporting articles from the straight conveyor 1 or a merging and transporting conveyor for joining and transporting articles to the linear conveyor 1.
- the curved conveyor 2 is provided as a branch conveyance conveyor, the article can be placed and conveyed from one end side to the other end side, and the article can be branched and conveyed from the main straight conveyor 1a to the curved conveyor 2.
- the curved conveyor 2 is provided as a merging / conveying conveyor, the article can be placed and conveyed from the other end side to the one end side, and the article can be merged and conveyed from the curved conveyor 2 to the main linear conveyor 1a.
- the main straight conveyor 1a includes a pair of belt-type transport units 4 (a first transport unit 4 and a second transport unit 4) arranged in a state spaced apart from each other in the width direction of the main straight conveyor 1a.
- the pair of transport units 4 is configured to place and transport the article in a form in which both ends in the width direction of the article are placed and supported.
- Each of the pair of transport units 4 is configured by winding a rotating belt 6 across a plurality of rotating pulleys 5.
- a driving rotary pulley 5 in the first transport unit 4 and a driving rotary pulley 5 in the second transport unit 4 are interlocked and connected by an interlocking drive shaft 7.
- the main linear conveyor 1a is provided with a belt electric motor 8 for rotating the interlocking drive shaft 7.
- the main linear conveyor 1a rotates the interlocking drive shaft 7 by the belt electric motor 8 and synchronously drives the pair of conveying sections 4, so that the articles placed and supported by the pair of rotating belts 6 are driven. Without changing the posture (without rotating the article around the vertical axis that is the axis along the vertical direction), the article is placed and conveyed along the linear straight virtual route line L1. .
- assistant linear conveyor 1b is comprised similarly to the main linear conveyor 1a, description is abbreviate
- the curved conveyor 2 will be described.
- the side connected to the main linear conveyor 1a will be described as the upstream side
- the side connected to the auxiliary linear conveyor 1b will be described as the downstream side.
- the curved conveyor 2 is composed of a connecting portion 10 positioned between a pair of transport units 4 in the main linear conveyor 1a and a side portion 11 positioned laterally of the main linear conveyor 1a.
- the side portion 11 is provided in a state where the conveyance surface of the side portion 11 is located at a height higher than the conveyance surfaces of the pair of conveyance portions 4, and the connection portion 10 has a pair of conveyance surfaces of the connection portion 10.
- the transfer position (see FIG. 2B) that is higher than the transfer surface of the transfer unit 4 and the same height as the transfer surface of the side portion 11 and the transfer surface of the connecting portion 10 are lower than the transfer surfaces of the pair of transfer units 4. It can be moved up and down at a position (see FIG. 2A).
- action of the main linear conveyor 1a are as follows.
- the vehicle travels on the connecting portion 10 at the branching location where the connecting portion 10 is disposed, and thereafter, is transported along the curved virtual route line L2 by the transporting action of the connecting portion 10 in the curved conveyor 2, and is branched and transported. Further, as shown in FIG.
- the connecting portion 10 by moving the connecting portion 10 downward to the retracted position, the articles that have been transported along the straight virtual route line L1 by the transport action of the main straight conveyor 1a are In addition, it does not ride on the connection part 10 at the branching point, and is conveyed as it is along the straight virtual route L1 by the conveying action of the main straight conveyor 1a, and is conveyed straight.
- two connecting portions 10 in the curved conveyor 2 are provided along the straight virtual route L1 of the straight conveyor 1, and each of the two connecting portions 10 can be raised and lowered individually. It is configured. Then, as shown in FIG. 2 (b), the two connecting portions 10 are simultaneously moved up from the retracted position to the transport position before the article is transported to the branching point, as shown in FIG. 2 (c). When the article is transferred from the upstream connection portion 10a to the downstream connection portion 10b, the upstream connection portion 10a is lowered to the retracted position, and when the article is transferred from the downstream connection portion 10b to the side portion 11.
- the operation of the lifting electric motor 12 in the two connection portions 10 is controlled by a control device (not shown) so that the downstream connection portion 10b is lowered to the retracted position. Therefore, by lowering the upstream connection portion 10a to the retracted position first, even if the article is placed and conveyed by the downstream connection portion 10b, the subsequent article to be conveyed in a straight line is received at the branch point. Therefore, a plurality of articles can be conveyed in a state where the intervals between the articles to be conveyed are narrowed.
- the curved conveyor 2 is connected to the upstream conveyor portion 13 for placing and conveying the article along the upstream virtual route line L ⁇ b> 3 and to the downstream side of the upstream conveyor portion 13.
- a downstream conveyor portion 14 that is placed and conveyed along the downstream virtual route line L4 is provided.
- a connecting portion 10 is constituted by a part of the upstream conveyor portion 13, and a side portion 11 is constituted by the remaining portion of the upstream conveyor portion 13 and the downstream conveyor portion 14.
- the upstream side of the upstream conveyor portion 13 is connected to the main straight conveyor 1a, and the downstream side of the downstream conveyor portion 14 is connected to the auxiliary straight conveyor 1b.
- Rotation operation transport for placing and transporting an article on the upstream end of the downstream conveyor part 14 in a state where the rotation amount of the article accompanying the conveyance by the downstream conveyor part 14 is equal to or greater than the rotation amount caused by the downstream conveyor part 14 A device 15 is provided.
- the rotation amount of the article is the rotation angle of the planar view posture per unit movement amount of the article to be conveyed.
- the amount of rotation caused by the downstream conveyor portion 14 is the amount of rotation of the article when the article is placed and conveyed along the downstream virtual route line L4 in the downstream posture.
- the upstream virtual route line L3 is set in an arc shape, and the article is placed around the longitudinal axis so that the upstream conveyor portion 13 is in an upstream posture along the tangent to the upstream virtual route line L3. It is configured to place and convey while rotating. Further, the downstream virtual route line L4 is also set in an arc shape so that the downstream conveyor portion 14 is in the downstream position along the tangent to the downstream virtual route line L4 so that the side of the article is along the vertical axis. It is configured to be placed and conveyed while rotating around.
- the tangent to the upstream virtual route line L3 along the side of the article means that the article is positioned on the upstream conveyor portion 13 and the longitudinal center of the article and the upstream virtual route line L3.
- the upstream conveyor portion 13 is configured to place and convey the article while rotating the article around the longitudinal axis so that the inclination of the side of the article changes with the change in the inclination of the tangent.
- the tangent of the downstream virtual route line L4 along the side of the article refers to the center of the longitudinal direction of the article and the center of curvature of the downstream virtual route line L4 when the article is located on the downstream conveyor portion 14.
- downstream conveyor portion 14 It is a tangent of the downstream virtual route line L4 on the line connecting the point P or the intersection of the extended line and the downstream virtual route line L4, and the direction of this tangent is conveyed by the downstream conveyor portion 14. Change with time.
- the downstream conveyor portion 14 is configured to place and convey the article while rotating the article around the longitudinal axis so that the inclination of the side of the article changes with the change in the direction of the tangent.
- the upstream virtual route line L3 in the upstream conveyor portion 13 is set in an arc shape that turns to the right, which is the first direction in the left-right direction
- the downstream virtual route line L4 in the downstream conveyor portion 14 is It is set in a circular arc shape that bends to the left, which is the second direction among the left and right directions.
- the upstream conveyor portion 13 is connected to the downstream virtual route line L4 with the upstream virtual route line L3 and the tangent to the downstream end of the upstream virtual route line L3 and the upstream end of the downstream virtual route line L4. It is provided in a state where the tangent is at the same angle.
- the upstream virtual route line L3 is set so as to bend on the opposite side to the downstream virtual route line L4, and the S-shaped curve is formed between the upstream virtual route line L3 and the downstream virtual route line L4.
- a virtual route line L2 is formed. Since the downstream side virtual route line L4 is set to bend to the opposite side to the upstream side virtual route line L3, the upstream conveyor portion 13 causes the article to be flattened by the propulsive force acting on the bottom surface of the article.
- the downstream conveyor section 14 is configured to rotate the article counterclockwise in a plan view by the propulsive force acting on the bottom surface of the article, whereas the conveyor section 14 is configured to be placed and conveyed while being rotated clockwise as viewed. However, it is configured so as to be placed and conveyed.
- Each of the upstream conveyor portion 13 and the downstream conveyor portion 14 is configured as a roller drive type in which an article is placed and conveyed by rotation of a plurality of drive rollers 17 that are rotationally driven by a roller electric motor 16 as a drive device. ing.
- the drive rollers 17 provided on the curved conveyor 2 are all configured to have the same diameter, and are all configured to rotate at the same rotational speed, and all have the same peripheral speed.
- the first portion in the width direction of the article is placed and supported by a plurality of driving rollers 17, and the second portion in the width direction of the article is placed and supported by a plurality of rotatable driven rollers 18. The article is placed and conveyed.
- the eight-wheel drive roller 17 provided in the upstream conveyor part 13 is positioned outward from the upstream virtual route line L3 in the radius of curvature direction of the arcuate upstream virtual route line L3. It is provided on the left side of the upstream virtual route line L3 when viewed in the transport direction.
- the six-wheel driven rollers 18 provided on the upstream conveyor portion 13 are upstream in the conveyance direction so as to be located inward of the upstream virtual route line L3 in the radius direction of curvature of the upstream virtual route line L3. It is provided on the right side of the side virtual route line L3.
- the eight-wheel drive roller 17 provided in the upstream conveyor portion 13 is more in the radius direction of curvature of the upstream virtual route line L3 than the six-wheel driven roller 18 provided in the upstream conveyor portion 13. It is provided to be located on the outer side.
- the eight-wheel drive roller 17 provided in the upstream conveyor section 13 has an upstream virtual route line L ⁇ b> 3 in a posture in which the rotation axis is directed to the curvature center point P of the upstream virtual route line L ⁇ b> 3.
- these eight-wheel drive rollers 17 are provided side by side along the upstream virtual route line L3 in such a posture that the rotation axis is in a direction along the curvature radius of the upstream virtual route line L3.
- the six-wheel driven rollers 18 provided in the upstream conveyor section 13 are arranged side by side along the upstream virtual route line L3 in a posture in which the rotation axis is directed to the curvature center point P of the upstream virtual route line L3.
- a group of first driving roller groups G1 including four upstream driving rollers 17 is connected upstream.
- a group of second drive roller groups G2 composed of the four-wheel drive rollers 17 on the downstream side is rotatably supported by the elevator 21 of the portion 10, and is rotatable on the elevator 21 of the downstream connection portion 10. It is supported.
- the four-wheel drive rollers 17 of each connection portion 10 are linked to each other by the interlock belt 22, and the four-wheel drive rollers 17 are driven to rotate by driving the roller motor 16. Yes.
- the upstream four-wheel first driving roller group G1 and the downstream four-wheel second driving roller group G2 are configured so as to be capable of being driven and rotated separately.
- the first four drive roller groups G1 on the upstream side are in a direction along the upstream virtual route line L3. It is located farther from the side portion 11 than the downstream four-wheel second drive roller group G2. Further, as shown in FIG. 3, the first drive roller group G1 is arranged in an arc shape with a radius of curvature smaller than that of the second drive roller group G2.
- the upstream four-wheel first driving roller group G1 and the downstream four-wheel second driving roller group G2 are arranged side by side along the arc of the same center of curvature P, although the radii of curvature are different. Therefore, any drive roller group is provided along the upstream virtual route line L3 of the upstream conveyor portion 13 provided with the drive roller group.
- the upstream conveyor portion 13 is provided with six driven rollers 18. Of the six driven rollers 18 provided in the upstream conveyor portion 13, the upstream three driven rollers 18 are rotatably supported by the lifting platform 21 of the upstream connection portion 10 and are downstream.
- the side three-wheel driven roller 18 is rotatably supported by the side portion 11.
- the upstream three-wheel driven rollers 18 are arranged along the straight virtual route line L1, and the downstream three-wheel driven rollers 18 are arranged along the upstream virtual route line L3. It is provided in the state.
- the ten-wheel drive roller 17 provided on the downstream conveyor portion 14 is downstream in the conveyance direction so as to be located outward from the downstream virtual route line L4 in the radius direction of curvature of the downstream virtual route line L4. It is provided on the right side of the side virtual route line L4. Further, the six-wheel driven rollers 18 provided on the downstream conveyor portion 14 are viewed in the conveyance direction so as to be located on the inner side of the downstream virtual route line L4 in the curvature radius direction of the downstream virtual route line L4. At the left side of the downstream virtual route line L4. Thus, the 10-wheel drive roller 17 provided in the downstream conveyor portion 14 is more in the radius direction of curvature of the downstream virtual route line L4 than the 6-wheel driven roller 18 provided in the downstream conveyor portion 14.
- the 10-wheel drive rollers 17 provided in the downstream conveyor portion 14 are arranged side by side along an arc having the same radius of curvature, and the 6-wheel driven rollers provided in the downstream conveyor portion 14. 18 are also arranged side by side along an arc having the same radius of curvature.
- the 10-wheel drive roller 17 provided on the downstream conveyor portion 14 is interlocked and connected by the interlock belt 22, and is configured so that the 10-wheel drive roller 17 is rotationally driven by the driving of the roller electric motor 16. ing.
- the driving roller 17 and the driven roller 18 provided in the downstream conveyor portion 14 will be described.
- the ten-wheel driving roller 17 provided in the downstream conveyor portion 14 is interlocked by the interlock belt 22.
- the ten-wheel drive roller 17 is driven to rotate by driving the electric motor 16.
- the driven roller 18 is rotatably provided at the other end portion of the rotation shaft 23 of the drive roller 17.
- the eight downstream wheels provided downstream of the upstream end of the downstream conveyor portion 14.
- the drive roller 17 is provided in such a posture that its rotational axis is directed to the curvature center point P of the downstream virtual route line L4.
- the six-wheel driven roller 18 provided in the downstream conveyor portion 14 is provided in a posture in which the rotation axis is directed to the curvature center point P of the upstream virtual route line L3.
- upstream two-wheel drive rollers 17 provided at the upstream end of the downstream conveyor portion 14 are provided as a rotational operation transport device 15, and the rotational operation transport thereof.
- the two drive rollers 17 on the upstream side as the device 15 are not provided in such a posture that the rotation axis is directed to the curvature center point P of the downstream virtual route line L4, and the rotation axis is orthogonal to the line segment L5. It is provided with a posture to do.
- this line segment L5 connects the upstream connection point X in the middle of the upstream virtual route line L3 and the downstream connection point Y in the middle of the downstream virtual route line L4, and the upstream virtual route line L3.
- the drive roller 17 located in an upstream is rotation of the rotating shaft 23.
- the axial center is provided between the upstream connection point X and the connection point Z so as to intersect the upstream virtual route line L3 and the line segment L5.
- the drive roller 17 positioned on the downstream side has a downstream virtual path between the downstream connection point Y and the connection point Z when the rotation axis of the rotation shaft 23 is between the downstream connection point Y and the connection point Z. They are provided so as to intersect the line L4 and the line segment L5.
- the drive roller 17 located on the upstream side intersects with the rotation axis 23 of the rotation shaft 23 in a state where the rotation axis is not orthogonal to the tangent at the intersection with the upstream virtual route line L3 and is orthogonal to the line segment L5. It is provided in a posture that intersects with the state. Further, the drive roller 17 located on the downstream side intersects with the rotation axis 23 of the rotation shaft 23 in a state where it is not orthogonal to the tangent at the intersection with the downstream virtual route line L4, and is orthogonal to the line segment L5. It is provided in a posture that intersects with the state.
- the eight-wheel drive roller 17 provided in a posture in which the rotation axis is directed to the curvature center point P of the downstream virtual route line L4 is propelled toward the article toward the tangential direction of the downstream virtual route line L4.
- the two-wheel drive roller 17 provided with a force but with a rotational axis that does not face the center of curvature P of the downstream virtual path line L4 is inward of the tangential direction of the downstream virtual path line L4. Propulsion is given to the article toward the side.
- the article conveyed along the curved virtual route line L ⁇ b> 2 by the curved conveyor 2 is transferred to the downstream conveyor part 14 when the front part of the article is transferred to the downstream conveyor part 14. Since the amount of rotation due to the conveyance of the downstream conveyor portion 14 is increased by the action of the rotational operation conveyance device 15 provided at the upstream end, the articles conveyed in this way are separated from the upstream conveyor portion 13.
- the front portion of the article is easily conveyed along the downstream virtual route line L4.
- the posture of the article indicated by the broken line in FIG. 5B indicates the posture of the article that is assumed when the rotation operation conveyance device 15 is not provided.
- the article conveyed along the curved virtual route line L2 is appropriately conveyed while being prevented from being greatly deviated from the downstream attitude by the rotary operation conveying device 15, so that the article falls within the set lateral width. Therefore, the article does not need to contact the guide body 3 as much as possible.
- the guide body 3 comes into contact with the outer peripheral surface of the article in an attempt to deviate from the set lateral width.
- the curved conveyor 2 was provided as a branch conveyance conveyor, you may provide the curved conveyor 2 as a merging conveyance conveyor. Moreover, you may provide the curvilinear conveyor 2 as a conveyor which serves as a branch conveyance conveyor and a merging conveyance conveyor so that a conveyance direction may be switched to a 1st direction and the 2nd direction opposite to it.
- the curved conveyor 2 is connected to the intermediate part of the linear conveyor 1 and is provided as a branching conveyor or a merging conveyor. However, the curved conveyor 2 is not connected to the intermediate part of the linear conveyor 1 and is branched or merged. You may provide as a conveyor which does not perform.
- the rotational operation transport device 15 is provided at the upstream end of the downstream conveyor portion 14, and the rotational operation transport device 15 is a plan view of the article accompanying the transport by the downstream conveyor portion 14.
- the rotation amount is set to convey the article in a state where the rotation amount is greater than or equal to the rotation amount caused by the downstream conveyor portion 14, but the rotation operation conveyance device 15 is provided at the downstream end portion of the upstream conveyor portion 13,
- the rotational operation conveying device 15 the article is placed and conveyed in a state where the rotation amount of the article in plan view accompanying the conveyance by the upstream conveyor portion 13 is equal to or less than the rotation amount caused by the upstream conveyor portion 13. It may be configured.
- the rotation amount resulting from the upstream conveyor portion 13 is the rotation amount of the article when the article is placed and conveyed along the upstream virtual route line L3 in the upstream posture. Moreover, you may provide the rotation operation conveyance apparatus 15 in both the downstream edge part of the upstream conveyor part 13, and the upstream edge part of the downstream conveyor part 14. FIG.
- the installation position in the curvature radius direction of the driving roller 17 as the rotational operation conveying device 15 can be appropriately changed. That is, the driving roller 17 as the rotation operation transport device 15 may be provided so as to be positioned closer to the curvature center point in the curvature radius direction than the position in the above embodiment. Further, for example, when the driving roller 17 as the rotation operation conveying device 15 is provided at the downstream end of the upstream conveyor portion 13, the six-wheel driven roller 18 provided in the downstream conveyor portion 14 in the above embodiment. A driving roller 17 may be provided in place of the driven roller 18 located on the most downstream side of them.
- the driven roller 18 located on the most downstream side described above intersects in a state where the rotation axis is not orthogonal to the tangent at the intersection with the upstream virtual route line L3. It is provided so as to intersect in a state orthogonal to L5.
- the downstream virtual route line L4 is set in an arc shape, and the tangent at the downstream end of the arcuate upstream virtual route line L3 and the upstream end of the arcuate downstream virtual route line L4
- the downstream virtual route line L4 is set so as to be at the same angle as the tangent line at, but the downstream virtual route line L4 is set to a straight line, and the tangent line at the downstream end of the arcuate upstream virtual route line L3
- the downstream virtual route line L4 may be set so that the upstream end of the linear downstream virtual route line L4 has the same angle.
- the driving roller 17 is provided so as to be positioned on the outer side of the virtual route line in the curvature radius direction of the upstream virtual route line L3 and the downstream virtual route line L4, and the driven roller 18 is provided.
- the upstream virtual route line L3 and the downstream virtual route line L4 are provided so as to be positioned on the inner side of the virtual route line in the curvature radius direction.
- the driving roller 17 may be provided on the inner side of the virtual route line.
- a driving roller 17 having an outer diameter smaller than the outer driving roller 17 and rotating at the same rotational speed as the outer driving roller 17 is provided on the inner side of the virtual path line in the radius of curvature direction, or
- the drive roller 17 having the same outer diameter as that of the drive roller 17 on the outer side and the rotation speed lower than that of the drive roller 17 on the outer side is provided.
- a driving roller 17 having a lower peripheral speed than the driving roller 17 may be provided.
- a driving roller 17 having an outer diameter smaller than the outer driving roller 17 and rotating at the same rotational speed as the outer driving roller 17 is provided on the inner side of the virtual route line in the radius of curvature direction.
- the outer drive roller 17 and the inner drive roller 17 may be integrally configured by providing a cone-shaped drive roller 17 having a smaller diameter toward the curvature center side in the curvature radius direction.
- the plurality of drive rollers 17 as the rotational operation transport device 15 are provided in a posture orthogonal to the line segment L5, but the plurality of drive rollers 17 as the rotational operation transport device 15 are provided upstream.
- it may be provided in an intermediate posture between the posture perpendicular to the line segment L5 and the posture in which the rotation axis faces the curvature center point P of the upstream virtual route line L3.
- the posture perpendicular to the line segment L5 and the rotation axis are on the downstream virtual route line L4. It may be provided in an intermediate posture with respect to the curvature center point P.
- connection portions 10 in the curved conveyor 2 are provided along the straight virtual route line L1 of the straight conveyor 1, and the two connection portions 10 are configured to be movable up and down separately.
- Three or more portions 10 may be provided along the straight virtual route line L1 of the straight conveyor 1, and the three or more connection portions 10 may be configured to be movable up and down individually, or only one connection portion 10 may be provided. It may be provided.
- the four drive rollers 17 constituting the first drive roller group G1 constitute the second drive roller group G2.
- all of the plurality of driving rollers 17 provided in the connection portion 10 are provided in a state of being arranged along an arc having the same curvature radius. Also good.
- the rectangular article in plan view is a rectangular article in which the two orthogonal sides have different lengths, but the square article in plan view has the same length of the two orthogonal sides. It is good.
- the present invention can be suitably used for a transport conveyor for placing and transporting an article having a rectangular shape in plan view, and a transport facility equipped with the transport conveyor.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branching, Merging, And Special Transfer Between Conveyors (AREA)
- Framework For Endless Conveyors (AREA)
- Intermediate Stations On Conveyors (AREA)
- Attitude Control For Articles On Conveyors (AREA)
Abstract
Description
ちなみに、図6に示すように、特許文献1では、上流側コンベヤ部分として、上流側仮想経路線が円弧状に設定されたカーブ状ローラコンベヤ装置51が設けられ、下流側コンベヤ部分として、下流側仮想経路線が直線状に設定された直線状ローラコンベヤ装置1が設けられており、下流側コンベヤ部分では、物品を縦軸心周りに回転させることなく搬送している。また、このような搬送コンベヤでは、物品が上流側仮想経路線及び下流側仮想経路線に沿って搬送されるときに、物品が搬送コンベヤに対して予め設定された設定横幅の範囲内に収まるように、物品の外周面に接触して物品を案内する案内体が設けられている。
しかし、物品の外周面に案内体を接触させることで物品の姿勢が下流側姿勢から大きくずれることを抑制していると、案内体が物品の外周面に接触することにより物品が磨耗する可能性があるため、物品が案内体に接触することは極力避けるほうが望ましい。
前記上流側仮想経路線及び前記下流側仮想経路線に沿って設けられて物品の外周面に接触することで物品を前記上流側仮想経路線及び前記下流側仮想経路線に沿って案内する案内体が設けられ、前記上流側コンベヤ部分が、前記下流側仮想経路線に前記上流側仮想経路線が接続され、且つ、前記上流側仮想経路線の下流側端における接線と、前記下流側仮想経路線の上流側端又は当該上流側端における接線とが同じ角度となる状態で設けられ、
前記上流側コンベヤ部分の下流側端部に設けられて前記上流側コンベヤ部分による搬送に伴う物品の回転量が当該上流側コンベヤ部分に起因する回転量以下の状態で物品を載置搬送する、又は、前記下流側コンベヤ部分の上流側端部に設けられて前記下流側コンベヤ部分による搬送に伴う物品の回転量が当該下流側コンベヤ部分に起因する回転量以上の状態で物品を載置搬送する回転操作搬送装置が設けられている点にある。
説明を加えると、搬送コンベヤにて物品を載置搬送するとき、物品の底面後部における搬送コンベヤとの摩擦力は、物品の底面前部における搬送コンベヤとの摩擦力に比べて大きくなる。これは、物品を載置搬送するときに荷重が物品の後側に偏るために、物品の底面後部における搬送コンベヤとの接地圧が、物品の底面前部における搬送コンベヤとの接地圧に比べて高くなるためと思われる。
そして、物品の底面後部における摩擦力が、物品の底面前部における摩擦力に比べて大きい場合、物品の底面後部の方が底面前部に比べて推進力が付与され易く、物品の前部に対して推進力が付与され難くなる。そのため、上流側コンベヤ部分と下流側コンベヤ部分との接続箇所に物品が搬送されると、物品の前部が下流側コンベヤ部分に乗り移っているにも関らず、上流側コンベヤ部分に残っている物品の後部に対する推進力が支配的となり、物品は上流側コンベヤ部分で搬送されているときと同様に上流側姿勢に向かうように縦軸心周りに回転しながら載置搬送される。このため、物品が上流側コンベヤ部分から下流側コンベヤ部分に乗り移る際、その物品は、下流側姿勢から大きくずれると考えられる。
このように下流側仮想経路線が上流側仮想経路線に対して逆方向に曲がる円弧状であると、下流側コンベヤ部分に乗り移る物品の前部は下流側仮想経路線の曲がり方向とは逆方向に進むため、下流側仮想経路線を直線状に設定した場合に比べて物品の姿勢が下流側姿勢から大きくずれ易いが、回転操作搬送装置を設けることで、物品が下流側姿勢から大きくずれることなく物品を搬送することができる。
また、下流側コンベヤ部分の上流側端部よりも下流側に備えられた駆動ローラが、その回転軸心が下流側仮想経路線の曲率中心点を向く姿勢で設けられているため、下流側コンベヤ部分の上流側端部よりも下流側では、物品は、その側辺が上流側仮想線の接線に沿う下流側姿勢になるように縦軸心周りに回転しながら搬送される。
そして、上述の如く駆動ローラと従動ローラとを配設して物品を載置支持することで、駆動ローラ及び従動ローラとして、一般的な円柱形状のローラを用いることができるため、特殊な円錐形状のローラを用いることなく駆動ローラ及び従動ローラを構成し易い。
そして、駆動ローラを仮想経路線に沿って広範囲に駆動ローラを設けることで、直線コンベヤから分岐搬送する物品又は直線コンベヤに合流搬送する物品を仮想経路線に沿って適切に搬送し易い。
図1に示すように、搬送設備は、直線状に設定された直線仮想経路線L1に沿って物品を載置搬送する直線コンベヤ1と、円弧状に設定された曲線仮想経路線L2に沿って物品を載置搬送する曲線コンベヤ2(搬送コンベヤに相当)とを備えて構成されている。本実施形態における物品は、平面視矩形状に形成されたプラスチック製の大型のトレーであり、物品の長手方向がコンベヤの搬送方向に沿い且つ物品の短手方向がコンベヤの幅方向に沿う姿勢で搬送される。尚、物品の長手方向に沿う辺が物品の側辺に相当する。
一対の搬送部4の夫々は、複数の回転プーリ5に亘って回転ベルト6を巻回して構成されている。第1の搬送部4における駆動用の回転プーリ5と第2の搬送部4における駆動用の回転プーリ5とが連動駆動軸7にて連動連結されている。主直線コンベヤ1aには、連動駆動軸7を回転駆動させるベルト用電動モータ8が設けられている。
そして、主直線コンベヤ1aは、ベルト用電動モータ8にて連動駆動軸7を回転駆動させて一対の搬送部4を同期駆動させることで、一対の回転ベルト6にて載置支持された物品の姿勢を変えることなく(物品を鉛直方向に沿う軸心である縦軸心周りに回転させることなく)、直線状の直線仮想経路線L1に沿って物品を載置搬送するように構成されている。
尚、副直線コンベヤ1bは、主直線コンベヤ1aと同様に構成されているため説明は省略する。
側方部分11は、側方部分11の搬送面が一対の搬送部4の搬送面より高い高さに位置する状態で設けられており、接続部分10は、接続部分10の搬送面が一対の搬送部4の搬送面より高く且つ側方部分11の搬送面と同高さとなる搬送位置(図2(b)参照)と接続部分10の搬送面が一対の搬送部4の搬送面より低い退避位置(図2(a)参照)とに昇降自在に設けられている。
そして、図2(b)に示すように、物品が分岐箇所に搬送されるよりも先に2つの接続部分10が同時に退避位置から搬送位置に上昇移動し、図2(c)に示すように、物品が上流側の接続部分10aから下流側の接続部分10bに乗り移った時点で上流側の接続部分10aは退避位置に下降し、下流側の接続部分10bから側方部分11に乗り移った時点で下流側の接続部分10bが退避位置に下降するように、2つの接続部分10における昇降用電動モータ12の作動が図外の制御装置にて制御されている。よって、上流側の接続部分10aを先に退避位置に下降させることで、下流側の接続部分10bにて物品を載置搬送している状態でも、直進搬送する後続の物品を分岐箇所に受け入れることができるため、搬送する物品同士の間隔を詰めた状態で複数の物品を搬送できるようになっている。
説明を加えると、物品の側辺が沿う上流側仮想経路線L3の接線とは、上流側コンベヤ部分13上に物品が位置する状態において、その物品の長手方向の中心と上流側仮想経路線L3の曲率中心点Pとを結ぶ線分上又はそれの延長線と上流側仮想経路線L3との交点における上流側仮想経路線L3の接線であり、この接線の向きは上流側コンベヤ部分13にて物品が載置搬送されるとともに変化する。上流側コンベヤ部分13は、この接線の傾きの変化に伴って物品の側辺の傾きが変化するように、物品を縦軸心周りに回転させながら載置搬送するように構成されている。
また、物品の側辺が沿う下流側仮想経路線L4の接線とは、下流側コンベヤ部分14上に物品が位置する状態において、その物品の長手方向の中心と下流側仮想経路線L4の曲率中心点Pとを結ぶ線分上又はその延長線と下流側仮想経路線L4との交点における下流側仮想経路線L4の接線であり、この接線の向きは下流側コンベヤ部分14にて物品が搬送されるとともに変化する。下流側コンベヤ部分14は、この接線の向きの変化に伴って物品の側辺の傾きが変化するように、物品を縦軸心周りに回転させながら載置搬送するように構成されている。
上流側コンベヤ部分13及び下流側コンベヤ部分14の夫々は、駆動装置としてのローラ用電動モータ16にて回転駆動される複数の駆動ローラ17の回転により物品を載置搬送するローラ駆動式に構成されている。曲線コンベヤ2に設けられている駆動ローラ17は、全て同径に構成され、また、全て同じ回転速度で回転するように構成されており、全てが同じ周速度となっている。そして、物品の横幅方向の第1の部分を複数の駆動ローラ17にて載置支持し、回転自在な複数の従動ローラ18にて物品の横幅方向の第2の部分を載置支持する形態で、物品を載置搬送するように構成されている。
そして、上流側の3輪の従動ローラ18は、直線仮想経路線L1に沿って並ぶ状態で設けられており、下流側の3輪の従動ローラ18は、上流側仮想経路線L3に沿って並ぶ状態で設けられている。
また、上流側に位置する駆動ローラ17は、その回転軸23の回転軸心が、上流側仮想経路線L3との交差箇所における接線に対して直交しない状態で交差し、線分L5と直交する状態で交差する姿勢で設けられている。
また、下流側に位置する駆動ローラ17は、その回転軸23の回転軸心が、下流側仮想経路線L4との交差箇所における接線に対して直交しない状態で交差し、線分L5と直交する状態で交差する姿勢で設けられている。
そして、曲線仮想経路線L2に沿って搬送される物品は、回転操作搬送装置15にて下流側姿勢からの大きな姿勢のずれが防止されて適切に搬送されることで、物品は設定横幅内に収まるため、物品は案内体3に極力接触せずに済む。物品の荷重が偏っている場合やスリップ等の搬送ミスが生じた場合には、物品が設定横幅から外れようとして、その物品の外周面に案内体3が接触することになる。
(1) 上記実施形態では、曲線コンベヤ2を、分岐搬送コンベヤとして設けたが、曲線コンベヤ2を、合流搬送コンベヤとして設けてもよい。また、搬送方向を第1の方向とそれと反対の第2の方向に切り換えるようにして、曲線コンベヤ2を、分岐搬送コンベヤ及び合流搬送コンベヤを兼用するコンベヤとして設けてもよい。
また、曲線コンベヤ2を直線コンベヤ1の中間部に接続して、分岐搬送コンベヤ又は合流搬送コンベヤとして設けたが、曲線コンベヤ2を直線コンベヤ1の中間部に接続せずに、分岐搬送や合流搬送を行わないコンベヤとして設けてもよい。
また、上流側コンベヤ部分13の下流側端部と下流側コンベヤ部分14の上流側端部との両方に回転操作搬送装置15を設けてもよい。
また、例えば、上流側コンベヤ部分13の下流側端部に、回転操作搬送装置15としての駆動ローラ17を設ける場合、上記実施形態において下流側コンベヤ部分14に設けられている6輪の従動ローラ18のうちの最も下流側に位置する従動ローラ18に代えて駆動ローラ17を設けてもよい。ちなみに、上記実施形態では、上述の最も下流側に位置する従動ローラ18は、その回転軸心が、上流側仮想経路線L3との交差箇所における接線に対して直交しない状態で交差し、線分L5と直交する状態で交差するように設けられている。
つまり、曲率半径方向で仮想経路線よりも内方側に、外方側の駆動ローラ17より外径が小さく且つ外方側の駆動ローラ17と同じ回転速度で回転する駆動ローラ17を設ける、又は、外方側の駆動ローラ17と同じ外径で且つ外方側の駆動ローラ17より回転速度が遅い駆動ローラ17を設ける等、曲率半径方向で仮想経路線よりも内方側に、外方側の駆動ローラ17より周速度が遅い駆動ローラ17を設けてもよい。
ちなみに、曲率半径方向で仮想経路線よりも内方側に、外方側の駆動ローラ17より外径が小さく且つ外方側の駆動ローラ17と同じ回転速度で回転する駆動ローラ17を設ける場合は、曲率半径方向で曲率中心側ほど小径となるコーン状の駆動ローラ17を設けることで、外方側の駆動ローラ17と内方側の駆動ローラ17とを一体的に構成してもよい。
2 搬送コンベヤ
3 案内体
4 搬送部
10 接続部分
11 側方部分
13 上流側コンベヤ部分
14 下流側コンベヤ部分
15 回転操作搬送装置
17 駆動ローラ
G1 第1駆動ローラ群
G2 第2駆動ローラ群
L1 直線仮想経路線
L3 上流側仮想経路線
L4 下流側仮想経路線
P 曲率中心点
Claims (8)
- 平面視矩形状の物品を上流側仮想経路線に沿って載置搬送する上流側コンベヤ部分と、
当該上流側コンベヤ部分の下流側に接続されて物品を下流側仮想経路線に沿って載置搬送する下流側コンベヤ部分とが設けられ、
前記上流側仮想経路線が円弧状に設定されて、前記上流側コンベヤ部分が、前記上流側仮想経路線の接線に物品の側辺が沿う上流側姿勢となるように物品を縦軸心周りに回転させながら載置搬送するように構成されている搬送コンベヤであって、
前記上流側仮想経路線及び前記下流側仮想経路線に沿って設けられて物品の外周面に接触することで物品が設定横幅内で収まるように物品を案内する案内体が設けられ、
前記上流側コンベヤ部分が、前記下流側仮想経路線に前記上流側仮想経路線が接続され、且つ、前記上流側仮想経路線の下流側端における接線と、前記下流側仮想経路線の上流側端又は当該上流側端における接線とが同じ角度となる状態で設けられ、
前記上流側コンベヤ部分の下流側端部に設けられて前記上流側コンベヤ部分による搬送に伴う物品の回転量が当該上流側コンベヤ部分に起因する回転量以下の状態で物品を載置搬送する、又は、前記下流側コンベヤ部分の上流側端部に設けられて前記下流側コンベヤ部分による搬送に伴う物品の回転量が当該下流側コンベヤ部分に起因する回転量以上の状態で物品を載置搬送する回転操作搬送装置が設けられている搬送コンベヤ。 - 前記上流側コンベヤ部分における前記上流側仮想経路線が、左右方向のうち第1の方向に曲がる円弧状に設定され、
前記下流側コンベヤ部分における前記下流側仮想経路線が、左右方向のうち第2の方向に曲がる円弧状に設定され、
前記上流側コンベヤ部分及び前記下流側コンベヤ部分が、前記上流側仮想経路線の下流側端における接線と前記下流側仮想経路線の上流側端における接線とが同じ角度となる状態で設けられている請求項1記載の搬送コンベヤ。 - 前記上流側コンベヤ部分及び下流側コンベヤ部分の夫々が、駆動装置にて回転駆動される駆動ローラの回転により前記物品を載置搬送するローラ駆動式に構成され、
前記上流側コンベヤ部分の前記下流側端部よりも上流側に備えられた前記駆動ローラが、その回転軸心が前記上流側仮想経路線の曲率中心点に向く姿勢で設けられ、
前記下流側コンベヤ部分の前記上流側端部よりも下流側に備えられた前記駆動ローラが、その回転軸心が前記下流側仮想経路線の曲率中心点を向く姿勢で設けられ、
前記上流側コンベヤ部分の前記下流側端部又は前記下流側コンベヤ部分の前記上流側端部に備えられた前記駆動ローラが、前記回転操作搬送装置として設けられ、
前記回転操作搬送装置としての前記駆動ローラは、その回転軸心が、前記上流側仮想経路線の途中箇所と前記下流側仮想経路線の途中箇所とを結び且つ前記上流側仮想経路線と前記下流側仮想経路線とが接続される接続点を通過する線分と直交する姿勢で設けられている請求項2記載の搬送コンベヤ。 - 前記駆動ローラが、物品を載置支持する回転自在な従動ローラよりも、前記上流側仮想経路線又は前記下流側仮想経路線の曲率半径方向で外方側に位置するように設けられている請求項3記載の搬送コンベヤ。
- 直線状に設定された直線仮想経路線に沿って物品を載置搬送する直線コンベヤが設けられ、
請求項1~4のいずれか1項に記載の搬送コンベヤが、前記直線コンベヤから物品を分岐搬送する分岐搬送コンベヤ、又は、前記直線コンベヤに物品を合流搬送する合流搬送コンベヤとして設けられている搬送設備。 - 前記直線コンベヤが、当該直線コンベヤの横幅方向に間隔を隔てた状態で並ぶ一対の搬送部を備えて、物品における前記横幅方向の両端部を載置支持する形態で物品を前記直線仮想経路線に沿って載置搬送するように構成され、
前記搬送コンベヤが、前記直線コンベヤにおける前記一対の搬送部の間に位置する接続部分と、前記直線コンベヤの横側方に位置する側方部分とで構成され、
前記側方部分が、その搬送面が前記一対の搬送部の搬送面より高い高さに位置する状態で設けられ、
前記接続部分が、前記接続部分の搬送面が前記一対の搬送部の搬送面より高く且つ前記側方部分の搬送面と同高さとなる搬送位置と前記接続部分の搬送面が前記一対の搬送部の搬送面より低い退避位置とに昇降自在に設けられている請求項5記載の搬送設備。 - 前記搬送コンベヤにおける前記接続部分が、前記直線コンベヤの前記直線仮想経路線に沿って複数設けられ、
前記複数の接続部分の夫々が、各別に昇降自在に構成されている請求項6記載の搬送設備。 - 前記接続部分に設けられて駆動装置にて回転駆動される複数の駆動ローラが、当該複数の駆動ローラが設けられた前記上流側コンベヤ部分の前記上流側仮想経路線又は前記下流側コンベヤ部分の前記下流側仮想経路線に沿って円弧状に並べて設けられ、且つ、当該複数の駆動ローラのうちの一部である第1駆動ローラ群が、当該複数の駆動ローラのうちの前記第1駆動ローラ群よりも前記側方部分の近くに位置する第2駆動ローラ群に比べて曲率半径が小さくなる状態で並べて設けられている請求項6又は請求項7記載の搬送設備。
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SG11201408595PA SG11201408595PA (en) | 2012-07-04 | 2012-07-04 | Transport conveyor and transport facility |
PCT/JP2012/067110 WO2014006707A1 (ja) | 2012-07-04 | 2012-07-04 | 搬送コンベヤ及び搬送設備(transport conveyer and transport facility) |
AU2012384446A AU2012384446B2 (en) | 2012-07-04 | 2012-07-04 | Transport conveyor and transport facility |
CN201280074446.8A CN104379474B (zh) | 2012-07-04 | 2012-07-04 | 输送机和输送设备 |
CA2878328A CA2878328C (en) | 2012-07-04 | 2012-07-04 | Transport conveyer and transport facility |
MYPI2014003568A MY164225A (en) | 2012-07-04 | 2012-07-04 | Transport conveyer and transport facility |
US14/412,515 US9266677B2 (en) | 2012-07-04 | 2012-07-04 | Transport conveyer and transport facility |
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JP6424511B2 (ja) * | 2014-08-08 | 2018-11-21 | 東洋製罐株式会社 | 物品の搬送方法及びその装置 |
NL2018193B1 (en) | 2017-01-18 | 2018-07-26 | Vmi Holland Bv | Conveying apparatus and method for conveying a tire layer |
JP6868223B2 (ja) * | 2018-05-18 | 2021-05-12 | 株式会社ダイフク | カーブコンベヤ |
JP7400526B2 (ja) * | 2020-02-19 | 2023-12-19 | 株式会社ダイフク | 搬送装置 |
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CN104379474A (zh) | 2015-02-25 |
AU2012384446A1 (en) | 2015-01-29 |
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SG11201408595PA (en) | 2015-02-27 |
CA2878328A1 (en) | 2014-01-09 |
AU2012384446B2 (en) | 2017-01-12 |
US20150166266A1 (en) | 2015-06-18 |
MY164225A (en) | 2017-11-30 |
CA2878328C (en) | 2017-07-11 |
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