JP6512977B2 - Drive roller unit and combination roller conveyor - Google Patents

Description

  The present invention relates to a roller conveyor, and more particularly to a driving roller unit that can be easily replaced from a free roller to a driving roller, and a combination roller conveyor using the driving roller unit.

  Patent Document 1 discloses a roller unit and a roller-type conveyor which are provided with a plurality of drive rollers in a unit case attached to a conveyor frame, and are detachably attachable to each unit case.

  In the roller type conveyor, a unit case including a bearing and a gear is attached at an inner position in the conveyor width direction in the conveyor frame, and a drive roller is supported on a shaft projecting inward in the conveyor width direction from the unit case. Because of this, the amount of protrusion of the drive roller from the conveyor frame to the inside in the width direction of the conveyor increases, and therefore, other rollers not attached to the unit case are also arranged at the same position in the width direction of the conveyor, The width of the conveyor between the left and right conveyor rollers is greatly reduced with respect to the distance.

Patent No. 4167836

  The present invention has been made in view of the above-described conventional problems, and includes a drive roller unit including a plurality of drive rollers that can be easily replaced with free rollers, and left and right conveyor rollers using the drive roller unit It is an object of the present invention to provide a combination roller conveyor in which the distance between the left and right conveyor frames is not narrowed significantly.

  The present invention can solve the above-mentioned problems by the following examples.

(1) The drive roller storage space is formed between the roller frame and the roller support wall in a state of being detachably attached to the roller support wall on the inner side in the width direction of the conveyor of the conveyor frame, with the spacer attached to the roller support wall. A plurality of roller sub-support walls, a plurality of drive rollers disposed in the longitudinal direction of the conveyor in the drive roller storage space, each rotatably supported by the roller sub-support walls, the drive rollers, and the roller sub-support walls Between the drive roller and the roller sub-supporting wall and disposed under the sprocket wheel, and provided between the drive roller and the roller sub-support wall, the sprocket wheel being disposed coaxially with each of the drive rollers. An endless chain wound on the sprocket wheel and synchronously driving the chain, and a side surface of the roller sub-support wall opposite to the drive roller Mounted, comprising a, a drive motor for applying a driving force to the endless chain drive roller unit.

(2) A first conveyor frame and a second conveyor frame arranged in parallel, a plurality of conveyor rollers arranged on the same conveyor line in the conveyor width direction inner position of the roller support wall in the first conveyor frame, and And a plurality of conveyor rollers disposed on the same conveyor line at a position inward of the roller width direction of the roller support wall in the second conveyor frame, and at least one of the first conveyor frame and the second conveyor frame In one conveyor frame, at least two of the conveyor rollers are drive rollers and the rest are free rollers, and the free rollers are a roller support wall in the first conveyor frame and a roller support wall in the second conveyor frame And the drive roller is detachably supported. The roller sub-supporting wall is further supported by a roller sub-supporting wall disposed on the inner side in the width direction of the conveyor, and the roller sub-supporting wall constitutes a part of the driving roller unit described above. A combination roller conveyor, which is detachably attached to a conveyor frame via the roller sub-supporting wall.

  In the present invention, the drive roller unit containing a plurality of drive rollers has a roller sub-supporting wall spaced inward in the widthwise direction of the conveyor relative to the roller support wall of the conveyor frame, and the drive roller comprises the roller sub-supporting wall and the conveyor frame Supported by the roller support wall so as to be positioned between the roller support wall and the endless chain and sprocket wheel for driving the drive roller are disposed inward in the conveyor width direction than the conveyor roller, The distance between the conveyor rollers is not greatly reduced as compared with the distance between the first and second conveyor frames.

A plan view showing a part of a combination roller conveyor according to an embodiment of the present invention II-II line diagram of FIG. 1 Sectional view along the line III-III in FIG. 1 Sectional view taken along the line IV-IV in FIG. 1 Sectional view along the V-V line of FIG. 1 Sectional view along the line VI-VI in FIG. 1 Sectional drawing which expands and shows the drive roller used in a combination roller conveyor The perspective view which shows the division bush which is a part of the drive roller The perspective view which shows the bearing bush which comprised combining the same divided bush

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, a combination roller conveyor 10 according to an embodiment of the present invention includes a first conveyor frame 11 and a second conveyor frame 12 arranged in parallel, and roller support walls 11A of the first conveyor frame 11. A plurality of conveyor rollers 14 disposed on the same conveyance line 11B at an inner position in the conveyor width direction, and a plurality of the same arranged on the same conveyance line 12B at a conveyor width direction inner position of the roller support wall 12A in the second conveyor frame 12 A conveyor roller 14 is provided.

  The conveyor roller 14 in the first conveyor frame 11 is composed of a drive roller 30 and a free roller 18 other than the drive roller 30. Further, only the free roller 18 is provided on the second conveyor frame 12.

  The free rollers 18 are detachably supported by roller support walls 11A and 12A which are inner side surfaces in the conveyor width direction of the first and second conveyor frames 11 and 12, respectively.

  On the other hand, the driving roller 30 is supported by the roller sub-supporting wall 22 which is detachably disposed on the roller supporting wall 11A on the inner side in the conveyor width direction of the first conveyor frame 11 at a position further inside the conveyor width direction than the roller supporting wall 11A. It is done. The roller sub-supporting wall 22 constitutes a part of the driving roller unit 20.

  The drive roller unit 20 is attached to the roller support wall 11A via the spacer 38 (see FIG. 6), and the roller sub support wall 22 forms a drive roller storage space 21A with the roller support wall 11A; In the drive roller storage space 21 A, a plurality of the drive rollers 30 are disposed in the longitudinal direction of the conveyor, and each rotatably supported by the roller subsupport wall 22, and between the drive roller 30 and the roller subsupport wall 22. Between the drive roller 30 and the roller sub-supporting wall 22 and disposed under the sprocket wheel 24 and disposed between the drive roller 30 and the roller sub-support wall 22 and disposed coaxially with each of the drive rollers 30; An endless chain 26 wound on the sprocket wheel 24 and synchronously driving the sprocket wheel 24; And La 30 mounted on the opposite side is configured to include a drive motor 28 for applying a driving force to the endless chain 26.

  Although only one drive roller unit 20 is shown in FIGS. 1 and 2, it is possible to use all the conveyor rollers of two or more units or the entire first conveyor frame as the drive roller unit 20.

  Furthermore, although the drive roller unit 20 is provided with two or three drive rollers 30, the number may be more than one.

  In practice, the number of drive rollers 30 is one or two selected from seven types of drive roller units 20 provided with two to eight drive rollers 30 from the viewpoint of manufacturing cost.

  As shown in FIG. 3, the roller sub-supporting wall 22 is attached to the inner side of the roller supporting wall 11A in the widthwise direction of the conveyor, and the lower side of the endless chain 26 and the sprocket wheel 24 is covered. And an endless chain 26, a sprocket wheel 24, and a support wall 22B covering the inner side of the drive roller 30 in the conveyor width direction. It consists of

  The roller sub-support wall 22 has a guide member slot 26B in which a chain guide member 26A for the endless chain 26 is inserted in the longitudinal direction of the conveyor, and a tip of a roller mounting bolt 30A for fixing the drive roller 30 is engaged. And a guide member slot 26E in which the chain slide guide 26D is inserted in the longitudinal direction of the conveyor.

  The driving roller 30 is provided coaxially integrally with the sprocket wheel 24, and supports the cylindrical spacer sleeve 30E rotatably supporting these via the bearing 30D, and the roller mounting bolt 30A penetrating the spacer sleeve 30E. Thus, the support wall portion 22B is fixed to the outer surface in the width direction of the conveyor.

  A sprocket wheel 24, an endless chain 26, and a top cover 32 covering a portion other than the upper end of the driving roller 30 are detachably attached to the upper end of the roller sub-supporting wall 22. A roller opening 34 is formed in the top cover 32 so that the upper end of the drive roller 30 is exposed.

  The drive roller unit 20 is, as shown in FIGS. 5 and 6, at a position between the drive rollers 30 in the longitudinal direction of the conveyor, by the unit mounting bolt 36 and the nut 36A, the inner surface of the roller support wall 11A in the conveyor width direction. Is fixed to the

  The unit mounting bolt 36 is inserted into the spacer 38, and the spacer 38 abuts against the inner surface of the roller support wall 11A in the conveyor width direction and the outer surface of the support wall 22B in the conveyor width direction at the time of fastening. Thus, the distance between the roller sub-supporting wall 22 and the roller supporting wall 11A is maintained.

  The horizontal connection portion 22A on the lower side of the roller sub-supporting wall 22 is fastened and fixed to the roller supporting wall 11A by a bolt 39. A drive sprocket wheel 28B is attached to the output shaft 28A of the drive motor 28.

  As shown in FIG. 5, the endless chain 26 is wound around the drive sprocket wheel 28B, and passes between the lower side of each sprocket wheel 24 and the upper side of the chain guide member 26A to turn back the left end in FIG. A U-turn is made by the part 26C to pass over the horizontal connection 22A of the roller sub-support wall 22 and return to the drive sprocket wheel 28B.

  Reference numeral 23 in FIGS. 1 and 5 denotes a guide roller for guiding the front end of the workpiece W conveyed from the right side in FIG. 5 to the upper side of the drive roller 30.

  As shown in FIG. 3, the free roller 18 is screwed with the end of the mounting bolt 18A penetrating the center thereof to the nut 16 in the roller mounting slot 15 of the roller support wall 11A, 12A or By loosening the nut 16, the free roller 18 can be easily attached and detached.

  Reference numeral 17 in FIG. 3 denotes a side guide attached to the upper end of the roller support walls 11A and 12A in order to guide both ends of the conveyed workpiece W in the widthwise direction of the conveyor.

  Next, the detailed structure of the driving roller 30 used in the above embodiment will be described with reference to FIGS.

  The driving roller 30 is fitted to the outer periphery of a spacer sleeve 30E which is fixed to the roller sub-supporting wall 22 by a roller mounting bolt 30A and a nut 30B.

  A sprocket bush 24A integral with the sprocket wheel 24 is fitted on the outer periphery of the bearing 30D, and is attached to the outer periphery of the sprocket bush 24A so as to rotate integrally with a spring pin 30F.

  A bearing bush 40 is fitted on the outer periphery of the sprocket bush 24A by a spring pin 30F so as to rotate integrally with the sprocket bush 24A.

  The bearing bush 40 is composed of divided bushes 40A and 40B shown in FIG. 8. The divided bushes 40A and 40B have the same structure, and in FIG. A portion 43 and a half ring portion 44 thereon are continuously and integrally provided.

  As shown in FIGS. 7 and 9, the split bushes 40A and 40B in the split bushes 40A and 40B have the same structure as the split bushes 40A and 40B, as shown in FIGS. The thin ring-like portions 43 and the half ring-like portions 44 are mounted so as to be assembled in an overlapping arrangement.

  The drive roller 30 is loosely fitted so that it can be lubricated between the inner peripheral surface of the roller outer peripheral portion 30G and the outer peripheral surface of the oil-impregnated bearing bush 40, and the friction force between the both is The rotation transmitted to the sprocket bush 24A constitutes a friction roller transmitted to the roller outer peripheral portion 30G.

  Therefore, when the friction between the roller outer peripheral portion 30G and the bearing bush 40 in the friction roller is small, the rotation of the roller outer peripheral portion 30G is stopped even if there is a slight resistance.

  In this embodiment, since the bearing bush 40 is formed of two divided bushes 40A and 40B and the half ring 44 is formed with a step, the straight planes of the half ring 44 overlap. At the outer peripheral portion, lubricating oil and dust attached to the inner peripheral surface of the roller outer peripheral portion 30G can be scraped off by the outer peripheral corner portion of the butting surfaces of the two half ring portions 44 while the drive roller 30 rotates. The coefficient of friction between the bearing bush 40 and the roller outer peripheral portion 30G can be maintained at a predetermined value or more.

  Further, in the drive roller 30 according to this embodiment, the roller outer peripheral portion 30G is sandwiched from both sides in the axial direction by the split bushes 40A and 40B, and the rotation pin is configured by the spring pin 30F. The bearing bush 40 can be made thin because the shaft snap ring 45 may be inserted.

  Therefore, the amount of protrusion from the outer surface of the drive roller 30 on the opposite side of the sprocket wheel 24 can be reduced, and the position of the drive roller 30 can be made closer to the roller support wall 11A of the first conveyor frame 11 in comparison with the conventional case. Can be arranged.

  In the above embodiment, the conveyor rollers provided on the second conveyor frame 12 are all free rollers, but the present invention is not limited to this, and the driving roller unit 20 is also used for the second conveyor frame 12. May be detachably attached.

  Further, in any of the first conveyor frame 11 and the second conveyor frame 12, all the conveyor rollers may be configured by the drive roller 30 of the drive roller unit 20.

  INDUSTRIAL APPLICABILITY The present invention has industrial applicability as a roller conveyor and a drive roller unit for the roller conveyor.

W: Work 10: Combination roller conveyor 11: First conveyor frame 11A, 12A: Roller support wall 11B, 12B: Conveying line 12: Second conveyor frame 14: Conveyor roller 15: Roller mounting slot 16, 30B, 36A: Nut 17 ... Side guide 18 ... Free roller 18A ... Mounting bolt 20 ... Drive roller unit 21A ... Drive roller storage space 22 ... Roller secondary support wall 22A ... Coupling part 22B ... Support wall 23 ... Guide roller 24 ... Sprocket wheel 24A ... Sprocket bush 26 ... Endless chain 26A ... Chain guide member 26B ... Guide member slot 26C ... Folded back 26D ... Chain slide guide 26 E ... Guide member slot 28 ... Drive motor 28A ... Output shaft 28B ... Drive sprocket 30: Drive roller 30A: Roller mounting bolt 30C: Slot 30D: Bearing 30E: Spacer sleeve 30F: Spring pin 30G: Roller outer peripheral portion 32: Top cover 34: Roller opening 36: Unit mounting bolt 38: Spacer 40: Bearing bush 40A , 40 B: Divided bush 42 ... Flange part 43 ... Thin-walled ring-like part 44 ... Half-ring like part 45 ... Snap-ring for shaft

Claims (7)

A roller subsupport which is detachable from a roller support wall on the inner side in the width direction of the conveyor of the conveyor frame, and forms a drive roller storage space with the roller support wall in a state of being attached to the roller support wall via a spacer. With the wall,
A plurality of drive rollers arranged in the longitudinal direction of the conveyor in the drive roller storage space, each of which is rotatably supported by the roller sub-support wall;
Sprocket wheels disposed between the drive roller and the roller sub-support wall and provided coaxially to each of the drive rollers;
An endless chain disposed between the drive roller and the roller sub-supporting wall and disposed below the sprocket wheel and wound around the sprocket wheel to synchronously drive the chain;
A drive motor attached to the side surface of the roller sub-supporting wall opposite to the drive roller to apply a driving force to the endless chain;
A drive roller unit comprising: In claim 1,
The roller sub-supporting wall is attached to the inner surface of the roller supporting wall in the widthwise direction of the conveyor, and a connecting portion covering the lower side of the endless chain and the sprocket wheel, and the connecting portion A driving roller unit comprising: a support wall portion extending upward from an inner end in the width direction of the conveyor and covering the inside in the width direction of the conveyor of the endless chain, the sprocket wheel and the driving roller. In claim 1 or 2,
The drive roller is provided coaxially and integrally with the sprocket wheel, and a spacer sleeve rotatably supporting these via a bearing, and the conveyor of the roller sub-support wall by a bolt penetrating the spacer sleeve A drive roller unit characterized in that it is fixed to the lateral surface in the width direction. In any one of claims 1 to 3,
A driving roller unit characterized in that a top cover covering a portion other than the endless chain, the sprocket wheel and the driving roller is detachably attached to the upper end of the roller sub-supporting wall. In any one of claims 1 to 4,
The roller sub-supporting wall has at least a guide member slot through which a chain guide member for the endless chain is inserted in the longitudinal direction of the conveyor, and a slot into which a nut for screwing a bolt tip for fixing the drive roller is inserted. A driving roller unit comprising an aluminum extrusion member configured. In any one of claims 1 to 5,
The roller sub-supporting wall includes the endless chain, the sprocket wheel, and the driving roller, and a surface on the side of the conveyor frame is opened. A first conveyor frame and a second conveyor frame arranged in parallel;
A plurality of conveyor rollers disposed on the same conveyance line at an inner position in the conveyor width direction of the roller support wall in the first conveyor frame;
And a plurality of conveyor rollers disposed on the same conveyance line at an inner position in the conveyor width direction of the roller support wall in the second conveyor frame,
At least two of the conveyor rollers in at least the first conveyor frame of the first conveyor frame and the second conveyor frame are drive rollers, and the rest are free rollers.
The free roller is detachably supported by the roller support wall of the first conveyor frame and the roller support wall of the second conveyor frame, and the drive roller is disposed further inside in the width direction of the conveyor than this. Supported by the supported roller sub-support wall,
The roller sub-supporting wall constitutes a part of the driving roller unit according to any one of claims 1 to 6,
The combination roller conveyor according to claim 1, wherein the drive roller unit is detachably attached to the first conveyor frame via the roller sub-supporting wall.

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