WO2017141864A1 - コンベヤ装置 - Google Patents
コンベヤ装置 Download PDFInfo
- Publication number
- WO2017141864A1 WO2017141864A1 PCT/JP2017/005096 JP2017005096W WO2017141864A1 WO 2017141864 A1 WO2017141864 A1 WO 2017141864A1 JP 2017005096 W JP2017005096 W JP 2017005096W WO 2017141864 A1 WO2017141864 A1 WO 2017141864A1
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- WIPO (PCT)
- Prior art keywords
- contact portion
- plate
- tray
- support
- article
- Prior art date
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Classifications
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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
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/06—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms
- B65G17/065—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms the load carrying surface being formed by plates or platforms attached to a single traction element
- B65G17/066—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms the load carrying surface being formed by plates or platforms attached to a single traction element specially adapted to follow a curved path
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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
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/30—Details; Auxiliary devices
- B65G17/32—Individual load-carriers
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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
- B65G47/34—Devices for discharging articles or materials from conveyor
- B65G47/38—Devices for discharging articles or materials from conveyor by dumping, tripping, or releasing load carriers
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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
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/94—Devices for flexing or tilting travelling structures; Throw-off carriages
- B65G47/96—Devices for tilting links or platform
- B65G47/962—Devices for tilting links or platform tilting about an axis substantially parallel to the conveying direction
Definitions
- the present invention relates to a conveyor device for conveying an article, and more particularly to an apparatus for conveying an article placed on an article support such as a tray.
- Equipment that requires multiple items to be transported from their origin to their destinations, such as when transporting passengers' luggage from the luggage delivery area in the airport to the cargo loading area of each passenger's plane , Each article is placed on each of the trays (article supports) traveling side by side on the transport path, and each tray is tilted at a position corresponding to the placed article (left and right with respect to the transport direction).
- a conveyor device that performs an operation of delivering each article to a chute that is arranged along the conveyance path and is connected to each destination may be employed.
- Patent Document 1 also describes a method of supporting a cover member using a support element reinforced with ribs, as one method of supporting the cover member.
- this method requires a support element in addition to the cover member as a structure for closing the gap between the article support members, which increases the number of parts and increases the cost of constructing the transport facility.
- the cover member is warped to the mounting surface side of the rib, that is, the lower surface side by heating for the welding, and the cover member There is a difference between the shape and the shape of the article support member, and eventually a gap is created between the cover member and the article support member.
- the width of the gap complement member is reduced while keeping the construction cost of the transport facility low without requiring a support element. It is an object of the present invention to provide a conveyor device in which a directional end portion does not cause a vertical gap between itself and an article support.
- a conveyor apparatus for conveying an article, and supports a plurality of traveling units that are lined up in series along a conveyance path of the article and the article.
- a plurality of article supports each having an article support surface and each of which is traveled on the transport path by each of the travel units.
- a gap complement member for closing a gap formed between adjacent article supports is provided corresponding to each of the article supports, and the article support is supported at a rear end portion along a conveyance path.
- the gap complementary member has a complementary contact portion that comes into contact with the support contact portion at a front end along the transport path, and the curvature of the complementary contact portion is It is larger than the curvature of the supporting contact portion.
- the complementary contact portion of the gap complement member is surely in contact with the support contact portion of the article support at the end in the width direction. There is no vertical gap at the end in the width direction. Furthermore, even if the end in the width direction hangs down (curvature decreases), in that case, the curvature of the complementary contact portion approaches the curvature of the support contact portion. As a result of the close contact, there is no gap in the vertical direction.
- the conveyor device is provided with a biasing member that biases the complementary contact portion of the gap complementary member toward the support contact portion of the article support, and the complementary contact portion Is formed of a flexible material, and the complementary contact portion is biased toward the support contact portion by the biasing member, so that the complementary contact portion follows the shape of the support contact portion. It may be made to contact with the above-mentioned support contact portion in the state where it bent. According to this configuration, even when the complementary contact portion and the support contact portion have different curvatures due to different curvatures, the complementary contact portion is attached to the support contact portion by the biasing member. As a result, the shape of the complementary contact portion conforms to the shape of the support contact portion, so that the gap between the complementary contact portion and the support contact portion is completely closed.
- the complementary contact portion of the gap complement member is formed of an elastic material, and the complementary contact portion is a support contact portion of the article support by its own elasticity. You may make it contact the said support contact part in the state bent along the shape. According to this configuration, even when the complementary contact portion and the support contact portion have different curvatures due to different curvatures, the complementary contact portion conforms to the shape of the support contact portion due to its own elasticity. Therefore, the gap between the complementary contact portion and the support contact portion is completely closed.
- the gap complementing member is formed so that the curvature of the complementary contact portion of the gap complementing member increases as it approaches the end of the gap complementing member. It may be. According to this configuration, since the curvature of the complementary contact portion is larger toward the end of the gap complementary member that is likely to sag, the vicinity of the end of the complementary contact portion is slightly drooped while the portion closer to the center is less. Even when it does not hang down, the gap between the complementary contact portion and the support contact portion can be kept closed.
- a load that is stronger than the center side may be applied to the end portion side of the complementary contact portion. Since the curvature of is larger than the center side, the contact state between the complementary contact portion and the support contact portion can be maintained.
- the gap complementing member is used for a long period of time so that both ends in the width direction of the gap complementing member are own. Even if it hangs down due to weight, it is possible to prevent a gap from being generated between the gap complementation member and the article support. Therefore, it is not necessary to replace the gap complementing member over a long period. Therefore, since the number of gap complement members to be prepared as a reserve can be reduced, the resource procurement cost for operating the conveyor device can be kept low. Further, the support element as in the prior art is not required, and the conveyor apparatus can be constructed at a low cost.
- FIG. 3 is a cross-sectional view taken along line AA in FIG. 2 and shows a state immediately before the infill plate is urged by a spring.
- FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2 and shows a state after the infill plate is urged by a spring.
- the perspective view which looked at the mode around the traveling unit of the conveyor apparatus of the embodiment from the lower side.
- FIG. 1 shows a part of a conveyor apparatus 10 as an example of an embodiment of the present invention.
- the article 12 to be conveyed is conveyed in the conveying direction W in a state where the article 12 is placed on a tray 14 as an article support.
- the direction along the transport direction W is referred to as the front-rear direction
- the direction orthogonal thereto is referred to as the left-right direction or the width direction
- the front-rear, left-right directions are defined as indicated by arrows in the drawing.
- a plurality of trays 14 are arranged in series along the conveyance direction W, and each of these trays can support the article 12 on the article support surface 14a.
- the upper surface of the tray 14 is slightly curved upward as shown in FIG. 4A. Therefore, when the article 12 is placed on the upper surface of the tray 14, the article 12 moves to the center in the width direction of the tray 14 along the curvature of the upper surface of the tray 14 due to its own weight. Thereby, the article 12 is prevented from rolling down to the left and right in the width direction of the tray 14, and the article 12 can be stably supported at the center portion in the width direction of the tray 14.
- the tray 14 can be tilted to the left and right with respect to the transport direction W as shown by the phantom line in FIG. 1 (only the state of tilting to the left is shown in FIG. 1), thereby the article support surface 14a of the tray 14 is shown.
- the placed article 12 can be paid out to any one of the chutes 18 arranged along the conveyance direction W.
- Each of the plurality of chutes 18 is connected to one of the plurality of destinations, and the operation of the conveyor device 10 is performed with respect to the chutes 18 where the articles 12 on the tray 14 are connected to the destinations corresponding to the articles 12. Controlled to be paid out.
- an infill plate 16 serving as a gap complement member is provided corresponding to each tray 14 so as to close a gap generated between two trays 14 that are lined up and down (adjacent) along the conveyance direction W. This prevents a part or the whole of the article 12 from dropping into the gap between the trays 14.
- the infill plate 16 tilts together with the tray 14 when the corresponding tray 14 tilts.
- FIG. 2 shows the conveyor device 10 as viewed from the side.
- the tray 14 is supported by a traveling unit 20, and the traveling unit 20 travels along a rail (not shown in FIG. 2) laid along the transport path.
- the traveling unit 20 as a whole has a substantially rectangular plate shape whose longitudinal direction is along the conveying direction W, and the traveling units 20 that are lined up and down (adjacent) along the conveying direction W are connected by a coupler 22. ing.
- the connected traveling unit 20 main bodies can turn up and down and right and left around the connector 22. As a result, even when the traveling unit 20 travels on a curved portion or an ascending / descending portion in the transport path, a series of travel units 20 can travel along the shape of the transport path.
- the traveling unit 20 supports the tray 14 via the tilting part 24.
- the tilt part 24 extends in the vertical direction and rotates a tray support member 25 supporting the tray 14 around a tilt axis P parallel to the transport direction W by a driving force of a motor 26 or the like.
- the tray 14 can be tilted so that the support surface 14a is inclined from the horizontal plane.
- a plate support portion 30 that supports the infill plate 16 is provided on the front side in the transport direction W of the traveling unit 20.
- the plate support portion 30 includes a plate tilting shaft 32 (gap complement member tilting shaft body) supported by the traveling unit 20 and a plate support member 34 connected to the plate tilting shaft 32.
- the plate tilting shaft 32 is a long member whose axial direction is along the conveying direction W.
- the extending direction of the plate tilting shaft 32 is coaxial with the tilting axis P of the tray 14.
- the plate tilting shaft 32 is rotatable about its axial direction. When the infill plate 16 tilts, the plate support member 34 and the plate tilting shaft 32 both rotate around the axial direction of the plate tilting shaft 32 as the tilting.
- the plate support member 34 has a vertical portion 34a that is connected to the plate tilting shaft 32 and extends vertically upward, and a front extension portion 34b that extends forward from the vertical portion 34a in the transport direction W.
- a swing bar 38 that forms a swing shaft extending in the left-right direction of the transport direction W is supported on the upper end portion of the vertical portion 34a and the rear end portion of the front extension portion 34b.
- a spring 36 extending vertically upward is supported on the front side of the front extension 34b.
- the infill plate 16 is supported by the swing bar 38 and the spring 36 from below.
- the infill plate 16 can be formed of, for example, an injection molded synthetic resin.
- the infill plate 16 supported by the plate support portion 30 has the same size as the tray 14 in the width direction (direction intersecting the transport direction W). And has a dimension that is longer than the gap between the trays 14 in the front-rear direction along the conveyance direction W. Since the dimension in the front-rear direction is longer than the gap, the infill plate 16 moves from the front end of the rear tray 14 (the tray 14 shown by the solid line on the right side in the drawing) to the front tray 14 (the tray shown by the phantom line on the left side in the drawing).
- a portion (a portion overlapping the tray 14 in plan view) of the infill plate 16 located below the rear portion of the front tray 14 is referred to as a plate contact portion 16a (complementary contact portion).
- a portion of the tray 14 that overlaps the plate contact portion 16a (a rear end portion along the transport path or the transport direction W) is referred to as a tray contact portion 14b (support contact portion).
- the traveling direction of the tray 14 and the traveling direction of the infill plate 16 intersect as shown at the right end in the figure, so that the tray 14 and the infill plate 16 are in the vertical direction.
- the size of the overlapping region is smaller on the one side (here, the right side) of the left and right sides in the width direction and larger on the other side (here, the left side) than when traveling along the straight portion.
- the width direction left and right parts of the infill plate 16 are formed longer than the width direction center part so that the gap can be closed without omission.
- the lower side of the front side (plate contact portion 16 a) of the infill plate 16 is urged from below by a spring 36.
- a bar fitting part 38a (here, a hole) such as a groove or a hole formed to fit the swinging bar 38 is provided below the back side of the infill plate 16, and this bar fitting part As described above, the swing bar 38 fitted into the 38a is supported by the plate support 30.
- the infill plate 16 can swing vertically up and down around the axis of the swing bar 38.
- the degree of upward bending of the plate contact portion 16a which is the front portion thereof, is determined.
- the (curvature) is larger than the upward curve (curvature) of the tray contact portion 14b which is the rear portion of the tray 14. That is, the curvature radius of the upper surface of the plate contact portion 16a is smaller than the curvature radius of the lower surface of the tray contact portion 14b. For this reason, in a state where the spring 36 is not biased, as shown in FIG.
- the width direction ends (left and right ends) of the upper surface of the plate contact portion 16a are in contact with the lower surface of the tray contact portion 14b.
- the entire plate in the width direction of the plate contact portion 16a is as shown in FIG. 4B by being biased by the spring 36 as will be described later. It will be in the state which contacted the tray contact part 14b.
- the front extension 34 b of the plate support member 34 branches in the left and right directions toward the front side, and each of the two front extensions 34 b branched has a spring 36 at the front end. I support it. For this reason, the arrangement of the two springs 36 is such that the spring 36 supports the plate contact portion 16a at two positions below the plate contact portion 16a and spaced apart in the width direction.
- the spring 36 as the urging member When the spring 36 as the urging member is extended or contracted (displaced) than the length in the equilibrium state (a state in which no external force is applied), the force to restore the equilibrium state by its own elasticity. That is, a restoring force is generated.
- the length of the spring 36 in the equilibrium state is from the position where the plate support 30 shown in FIGS. 2 and 4A supports the spring 36 (specifically, the upper surface of the front extension 34b of the plate support 34) to the lower surface of the tray contact portion 14b. Designed longer than the distance. Therefore, as shown in FIG.
- the plate contact portion 16a bends along the shape of the lower surface of the tray contact portion 14b due to its own flexibility, and finally the upper surface of the plate contact portion 16a extends along the lower surface of the tray contact portion 14b as shown in FIG. 4B.
- the plate contact portion 16a and the tray contact portion 14b are in contact with each other over the entire width direction.
- the infill plate 16 follows the movement of the tray 14. For example, when the tray 14 tilts in the left-right direction, the infill plate 16 tilts together with the tray 14 while being in contact with the tray 14.
- the plate contact portion 16a as the complementary contact portion has a larger curvature than the tray contact portion 14b as the support contact portion as described above (the infill plate 16 is larger than the curvature radius of the tray 14). Therefore, the end portion in the width direction of the plate contact portion 16a comes into contact with the lower surface of the tray contact portion 14b, and there is no vertical gap at the end portion in the width direction.
- the tray contact portion 14b is urged toward the plate contact portion 16a by the spring 36 and the tray contact portion 14b is bent along the shape of the plate contact portion 16a, the plate contact portion 16a is contacted.
- the portion 16a not only the end portion in the width direction but also the center portion in the width direction are in close contact with the plate contact portion 16a, and there is no vertical gap in the entire width direction.
- the upward curvature of the plate contact portion 16a is larger than the upward curvature of the tray contact portion 14b (before the plate contact portion 16b is smaller than the curvature radius of the tray contact portion 14b) before being bent by being biased. For this reason, even if the end portion in the width direction of the infill plate 16 hangs down slightly due to its own weight as a result of using the infill plate 16 for a long period of time, the influence of the sag on the shape of the plate contact portion 16a is upward. Since it appears in a form of slightly reducing the curvature (increasing the radius of curvature), the curvature of the plate contact portion 16a approaches the curvature of the tray contact portion 14b.
- the sag does not result in moving the plate contact portion 16a away from the tray contact portion 14b, but rather the shape of the plate contact portion 16a becomes the shape of the tray contact portion 14b. It will approach. For this reason, even if the width direction end of the plate contact portion 16a slightly hangs down, there is no gap between the plate contact portion 16a and the tray contact portion 14b. Similarly, as a result of repeatedly tilting the tray 14 to the left and right many times and pushing the left and right direction (width direction) end of the plate contact portion 16a downward, the end in the width direction of the plate contact portion 16a is lowered.
- the plate contact portion 16a is schematically shown in the blowout of FIG.
- the curvature of the plate contact portion 16a may be made slightly larger than the curvature of the tray contact portion 14b in a side view (in order to make it easier to understand in the balloon in FIG. 2). Shown). That is, not only the curvature when viewed from the traveling direction side (AA arrow direction in FIG. 2) as shown in FIG. 4A, but also the side surface (direction orthogonal to the traveling direction) as shown in the blowout in FIG. ), The curvature of the plate contact portion 16a is preferably larger than the curvature of the tray contact portion 14b.
- the infill plate 16 is formed of injection-molded resin, since the degree of freedom of the shape is quite large, the infill plate 16 is formed as a shape with a curvature (bent in various directions) in both the width direction and the front-back direction. It is possible.
- ribs 17 may be provided on the lower surface of the infill plate 16 in order to increase the strength of the infill plate 16.
- the ribs 17 formed as a plate-like member separate from the infill plate 16 are welded to the infill plate 16. It will be attached to the bottom.
- the infill plate 16 warps slightly downward due to heating accompanying welding, but the effect of the downward warping slightly reduces the upward curvature of the plate contact portion 16 a.
- the bow does not result in moving the plate contact portion 16a away from the tray contact portion 14b, but rather the shape of the plate contact portion 16a approaches the shape of the tray contact portion 14b. Therefore, even if the plate contact portion 16a is slightly warped by welding the rib 17, there is no gap between the plate contact portion 16a and the tray contact portion 14b.
- the conveyor device 10 of the present embodiment not only the gap between the trays 14 is blocked by the infill plate 16 but also the infill plate 16 is used for a long period of time or the tray 14 is tilted left and right. Even if both end portions in the width direction of the infill plate 16 hang down by being repeated, it is possible to prevent a gap from being generated between the infill plate 16 and the tray 14. Therefore, the infill plate 16 does not have to be replaced every time the infill plate 16 is deformed, and the resource procurement cost for operating the conveyor device 10 can be kept low.
- the warp of the infill plate 16 does not cause a gap between the infill plate 16 and the tray 14, so the strength of the infill plate 16 is reinforced by retrofitting. can do.
- the burden on the infill plate 16 is first examined by performing a test operation of the conveyor device 10 using the infill plate 16 without the ribs 17, and then the ribs 17 are welded as many times as necessary according to the required strength. Techniques can also be taken.
- the infill plate 16 is formed of a synthetic resin having flexibility, and the plate contact portion 16a of the infill plate 16 is urged by a spring 36 as shown in FIG. 4B.
- the plate contact portion 16a is bent along the shape of the tray contact portion 14b, but the plate contact portion 16a is formed of a material that is not so flexible, such as wood, and is bent along the shape of the tray contact portion 14b. It may be a structure that does not. In this case, since the plate contact portion 16a does not bend, the central portion in the width direction of the plate contact portion 16a is separated from the tray contact portion 14b as shown in FIG.
- the shape of the plate contact portion 16a in the infill plate 16 If the shape of the portion other than the plate contact portion 16a (rear portion) is made different, a part of the article 12 enters between the center portion in the width direction of the plate contact portion 16a and the tray contact portion 14b. It will be prevented from going out. For example, if a step is provided between the plate contact portion 16a of the infill plate 16 and the other rear portion, and the rear end of the tray 14 is in contact with the upright surface of the step portion, the tray 14 Since there is no gap between the rear end of the plate and the infill plate 16, a part of the article 12 enters the gap formed between the central portion in the width direction of the plate contact portion 16a and the tray contact portion 14b. There is no. Of course, if the infill plate 16 is formed of a flexible material, there is no need to provide a step between the plate contact portion 16a and the other portions, and the entire top surface of the infill plate 16 is smooth. It is good as a shape.
- the entire infill plate 16 is formed of a flexible material (such as injection-molded synthetic resin), but only the plate contact portion 16a of the infill plate 16 is used. May have a flexible structure.
- the infill plate 16 is formed of a synthetic resin, if the plate contact portion 16a is thin and the other portions are formed thick, the plate contact portion 16a is easily bent, The portion can be structured so that it does not flex easily.
- two springs 36 are provided in the width direction as shown in FIG. 3, but three or more springs 36 may be provided in accordance with the size and shape of the tray 14 and the infill plate 16.
- the load applied to the infill plate 16 may not be evenly distributed over the entire infill plate 16 due to the elastic force of the spring 36 when only two springs 36 are used.
- the load on the entire infill plate 16 can be equalized. If the tray 14 and the infill plate 16 are small, the load applied to the entire infill plate 16 is not so uneven even if only one spring 36 is provided.
- the width direction of the plate contact portion 16a of the infill plate 16 is not limited. Only one spring 36 may be arranged below the center to reduce the number of parts.
- a spring 36 as shown in FIG. 5 is used as a biasing member for biasing the plate contact portion 16a to the tray contact portion 14b.
- What is necessary is just to press toward the part 14b, for example, a rubber column, an air cylinder, etc. generate
- a restoring force member may be used instead of the spring 36. Even when a restoring force member other than the spring 36 is used, if the restoring force member is arranged so that the restoring force acts in the direction in which the plate contact portion 16a is pressed against the tray contact portion 14b, the movement of the tray 14 can be adjusted. Thus, the infill plate 16 can follow and move, and the plate contact portion 16a can be bent along the shape of the tray contact portion 14b.
- the spring 36 is disposed below the plate contact portion 16a to urge the plate contact portion 16a against the tray contact portion 14b, but the spring 36 is disposed.
- the infill plate 16 (especially the plate contact portion 16a) is formed of an elastic material such as rubber, so that the plate contact portion 16a is made elastic against the tray contact portion 14b by the elasticity of the plate contact portion 16a itself.
- the plate contact portion 16a may be biased so as to be in contact with the tray contact portion 14b while being bent along the shape of the tray contact portion 14b.
- the plate contact portion 16a can be urged only by the plate contact portion 16a without arranging the spring 36, so that it is not necessary to procure the spring 36 and the components constituting the conveyor device 10 are not required.
- the number of types is reduced. Therefore, the material procurement cost can be reduced, and the number of spare parts to be stored for maintenance can be reduced.
- the assembly process of the conveyor apparatus 10 can be simplified. Therefore, the introduction cost and maintenance cost in constructing the conveyor device 10 can be reduced.
- the curvature of the plate contact portion 16a is substantially constant in the width direction as shown in FIG. 4A, but in reality, the portion on the side in the width direction of the plate contact portion 16a is in the width direction.
- the infill plate 16 is formed so that the curvature gradually increases gradually (the curvature radius gradually decreases) closer to the end of the plate contact portion 16a because it is more likely to sag than the center portion. It is desirable.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Discharge Of Articles From Conveyors (AREA)
- Chain Conveyers (AREA)
- Pallets (AREA)
- Framework For Endless Conveyors (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Packaging Frangible Articles (AREA)
- Branching, Merging, And Special Transfer Between Conveyors (AREA)
- Basic Packing Technique (AREA)
- Intermediate Stations On Conveyors (AREA)
Abstract
Description
この構成によれば、補完接触部分と支持接触部分との曲率の違いにより、間隙補完部材の補完接触部分は幅方向端部において確実に物品支持体の支持接触部分と接触することになって、幅方向端部に上下方向の隙間が生じることがない。さらに、仮に幅方向端部が垂れ下がる(曲率が下がる)ことがあったとしても、その場合は補完接触部分の曲率が支持接触部分の曲率に近づくことになるため、補完接触部分が支持接触部分により密着することになって、上下方向の隙間は生じない。また同様に、間隙補完部材の補完接触部分にリブを溶接によって後付けして、その溶接によって補完接触部分が下面側へ多少反り返って(曲率が下がって)しまったとしても、それによって補完接触部分の曲率が支持接触部分の曲率に近づくことになり、上下方向の隙間は生じない。
この構成によれば、補完接触部分と支持接触部分との曲率が違うことにより補完接触部分と支持接触部分の形状が異なっていても、付勢部材によって補完接触部分が支持接触部分へ向けて付勢されることで、補完接触部分の形状は支持接触部分の形状に沿った形となるため、補完接触部分と支持接触部分との間の隙間が完全に塞がれる。
この構成によれば、補完接触部分と支持接触部分との曲率が違うことにより補完接触部分と支持接触部分の形状が異なっていても、補完接触部分が自身の弾性によって支持接触部分の形状に沿った形となるため、補完接触部分と支持接触部分との間の隙間が完全に塞がれる。
この構成によれば、垂れ下がりが生じやすい間隙補完部材の端部近傍ほど補完接触部分の曲率が大きくなっているため、補完接触部分の端部近傍がやや大きく垂れ下がる一方で、中央寄りの箇所はさほど垂れ下がらない場合においても、補完接触部分と支持接触部分との間の隙間が塞がれた状態を保つことができる。また、物品支持体が搬送経路内のカーブ部を走行する場合などには、補完接触部分の端部側に中央側よりも強い負荷がかかることがあるが、そのような場合においても端部側の曲率が中央側よりも大きくなっているために補完接触部分と支持接触部分との間の密着状態を保つことができる。
図1に、本発明の実施形態の一例としてのコンベヤ装置10の一部を示す。このコンベヤ装置10においては搬送対象となる物品12が物品支持体としてのトレイ14に載置された状態で搬送方向Wに向けて搬送が行われる。ここでは、搬送方向Wに沿う方向を前後方向、それと直交する方向を左右方向または幅方向と呼び、図中に矢印で示す通り前後左右の方向を定める。このトレイ14は図1に示す通り搬送方向Wに沿って直列に複数並べられており、これらのそれぞれがその物品支持面14a上に物品12を支持できるようになっている。なおトレイ14の上面は、図4Aに示すようにやや上向きに湾曲している。そのためトレイ14の上面に物品12が置かれると、その物品12は自身の重量によって、トレイ14の上面の湾曲に沿ってトレイ14の幅方向中央部へと移動する。これにより、物品12がトレイ14の幅方向左右へと転がり落ちることが防止され、トレイ14の幅方向中央部で物品12を安定して支持できるようになっている。
図2に、コンベヤ装置10を側方から見た様子を示す。図示のようにトレイ14は走行ユニット20に支持されており、この走行ユニット20は搬送経路に沿って敷設されたレール(図2には図示せず)に沿って走行する。走行ユニット20全体はその長手方向が搬送方向Wに沿う概ね長矩形平板状の形状となっており、搬送方向Wに沿って前後に並ぶ(隣接する)走行ユニット20同士は連結器22によって連結されている。この連結器22の詳細はここでは図示しないが、連結された走行ユニット20本体同士がこの連結器22を中心として互いに上下左右に旋回できるようになっている。これにより、走行ユニット20が搬送経路内のカーブ部や昇り降り部を走行する場合にもその搬送経路の形状に沿って一連の走行ユニット20が走行できるようになっている。
さらに走行ユニット20の搬送方向W前方側には、インフィルプレート16を支持するプレート支持部30が設けられている。このプレート支持部30は走行ユニット20に支持されるプレート傾倒シャフト32(間隙補完部材傾倒軸体)と、そのプレート傾倒シャフト32に接続されたプレート支持材34を備えている。
インフィルプレート16は例えば射出成型された合成樹脂により形成することができる。その寸法については、図3の平面図に破線で示すように、プレート支持部30に支持されているインフィルプレート16は幅方向(搬送方向Wと交差する方向)にはトレイ14と同程度の寸法を有しており、搬送方向Wに沿う前後方向にはトレイ14同士の隙間よりも長い寸法を有している。前後方向の寸法が隙間よりも長いことにより、インフィルプレート16は後方側のトレイ14(図中右側の実線で示すトレイ14)の前端から前方側のトレイ14(図中左側の仮想線で示すトレイ14)の後部下方にまでわたって広がることになり、隙間を前後方向に漏れなく塞ぐことができるようになっている。以下においては、インフィルプレート16のうち、前方側のトレイ14の後部下方に位置する部分(平面視でトレイ14と重なっている部分)をプレート接触部分16a(補完接触部分)と呼ぶ。また、トレイ14のうち、プレート接触部分16aと重なっている部分(搬送経路または搬送方向Wに沿った後端部)をトレイ接触部分14b(支持接触部分)と呼ぶ。
プレート支持材34の前方延長部34bは図3,図5に示すように前方側に向けて左右2方向に枝分かれしており、枝分かれした2つの前方延長部34bのそれぞれが前端部においてスプリング36を支持している。このため、2つのスプリング36の配置は、プレート接触部分16aの下方かつ幅方向に離間した2箇所の位置においてスプリング36がそれぞれプレート接触部分16aを支持するようになっている。
なお、インフィルプレート16の垂れ下がりについては、幅方向左右側だけでなく走行方向前方側(搬送経路に沿った前端部)でも生じる可能性がある。この前方側の垂れ下がりが生じてもトレイ14とインフィルプレート16との間に鉛直方向の隙間が生じないようにするためには、図2の吹出し内で概略的に示すように、プレート接触部分16aの前方側の曲率を、側面視においてトレイ接触部分14bの曲率よりもやや大きく形成しておけばよい(なお、図2の吹き出し内ではわかりやすいように、プレート接触部分16aの曲率を実際よりも大きく示している)。すなわち、図4Aに示すような進行方向側(図2のA-A矢視方向)から見た場合の曲率だけでなく、図2中の吹出しに示すように側面側(進行方向と直交する方向)から見た場合の曲率についても、プレート接触部分16aの曲率をトレイ接触部分14bの曲率よりも大きくしておくことが望ましい。インフィルプレート16を射出成型された樹脂で形成する場合、形状の自由度はかなり大きいため、このように幅方向についても前後方向についても曲率が付いた(様々な方向に曲がった)形状として形成することが可能である。
14 トレイ
16 インフィルプレート
20 走行ユニット
22 連結器
24 傾倒部
36 スプリング
38 揺動バー
Claims (4)
- 物品を搬送するためのコンベヤ装置であって、前記物品の搬送経路に沿って直列に並んで走行する複数の走行ユニットと、物品を支持するための物品支持面を有する複数の物品支持体であり且つそれぞれが前記走行ユニットの各々によって前記搬送経路上を走行させられる物品支持体と、を有するコンベヤ装置において、
前記搬送経路内で前後に隣接する前記物品支持体同士の間に生じる隙間を塞ぐための間隙補完部材が前記物品支持体のそれぞれに対応して設けられており、
前記物品支持体は搬送経路に沿った後端部に支持接触部分を有しており、
前記間隙補完部材は搬送経路に沿った前端部に前記支持接触部分と接触する補完接触部分を有しており、
前記補完接触部分の曲率は前記支持接触部分の曲率よりも大きいこと
を特徴とするコンベヤ装置。 - 間隙補完部材の補完接触部分を物品支持体の支持接触部分へ向けて付勢する付勢部材が設けられており、
前記補完接触部分が可撓性を有する材料で形成されていて、
前記補完接触部分が前記付勢部材によって前記支持接触部分へ向けて付勢されることにより、前記補完接触部分が前記支持接触部分の形状に沿って撓んだ状態で前記支持接触部分と接触させられていること
を特徴とする請求項1に記載のコンベヤ装置。 - 間隙補完部材の補完接触部分が弾性を有する材料で形成されており、前記補完接触部分が自身の弾性によって物品支持体の支持接触部分の形状に沿って撓んだ状態で前記支持接触部分と接触していること
を特徴とする請求項1または請求項2に記載のコンベヤ装置。 - 間隙補完部材の補完接触部分の曲率が、間隙補完部材の端部に近づくほど大きくなるように、間隙補完部材が形成されていること
を特徴とする請求項1ないし請求項3のいずれか1項に記載のコンベヤ装置。
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US16/077,629 US10294033B2 (en) | 2016-02-19 | 2017-02-13 | Conveyor apparatus |
CN201780011267.2A CN108698763B (zh) | 2016-02-19 | 2017-02-13 | 输送装置 |
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