AU632338B2 - Material handling conveyor - Google Patents
Material handling conveyor Download PDFInfo
- Publication number
- AU632338B2 AU632338B2 AU57957/90A AU5795790A AU632338B2 AU 632338 B2 AU632338 B2 AU 632338B2 AU 57957/90 A AU57957/90 A AU 57957/90A AU 5795790 A AU5795790 A AU 5795790A AU 632338 B2 AU632338 B2 AU 632338B2
- Authority
- AU
- Australia
- Prior art keywords
- shaft
- roller
- cluster
- leg
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000000463 material Substances 0.000 title claims description 15
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 239000010974 bronze Substances 0.000 claims description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000000670 limiting effect Effects 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 101100289061 Drosophila melanogaster lili gene Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/02—Adaptations of individual rollers and supports therefor
- B65G39/04—Adaptations of individual rollers and supports therefor the rollers comprising a number of roller forming elements mounted on a single axle
-
- 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
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
-
- 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
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/10—Arrangements of rollers
- B65G39/12—Arrangements of rollers mounted on framework
-
- 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
- B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
- B65G2207/34—Omni-directional rolls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
Description
_II Ill~LI ~Lili 632338 SPECIFICATI ON C 0 KP L E T FOR OFFICE USE Application Number: Lodged: Class: Int. Class: Complete Specification Lodged: Accepted: Published: Priority: Related Art: TO BE COMPLETED BY APPLICANT Name of Applicant: Address of Applicant: Actual Inventor: Address for Service: FMC CORPORATION Executive Offices, Patent Department, 200 East Randolph Drive, Chicago, Illinois 560601, United States of America Michael A. LEON SMITH SHELSTON BEADLE 207 Riversdale Road I( 0 Box 410) Hawthorn Victoria 3122 Australia (Attorney Code SA) Complete Specification for the invention entitled: MATERIAL HANDLING CONVEYOR The following statement is a full description of this invention, including the best method of performing it known to us: Page 1 Our Ref: #5666 PS:BC:WB 4fmc la- 0o a rr ol 0 ,15 o 00 0a a alo uo 0 o 0 0 0 4 a 000 0 20 0 00 0 00« 0 20 0 0 0 0 0 0 ft 0 0 0 0 0 o a 30 loQ
~Q
25 o a
B
0# 2" 'i Xv^-l" This invention relates generally to material handling conveyors, and more particularly to such conveyors which utilize a plurality ot clusters with freely rotatable rollers affixed to selectively powered shafts.
Friction is an important factor in the performance of any material handling conveyor, but is especially important in those conveyors that employ multiple clusters attached to shafts with each cluster having a number of free rotatable barrell-shaped rollers arranged around the periphery of the cluster with the axis of rotation for the rollers set at an angle to the axis of the shaft to '.hich the cluster is attached, such as conveyors of the type disclosed and claimed in U.S. patent application Serial Number 06/781,443, filed September 27, 1985. Such conveyors are capable of rotating any flat-bottomed object about a vertical axis or in any direction by selectively controlling the direction of rotation of the shafts on which the clusters are attached. The motion of the object is determined by the summation of the friction forces (magnitude and direction) exerted by the rollers on the flat--bottom. Friction forces should, and ideally do, act in a direction which is parallel to the axis of the shaft on which the roller is mounted. Friction forces which act perpendicular to this shaft axis detract from the efficiency and responsiveness of the conveyor. It is also important that such detrimental forces be substantially the same whether wet or dry.
Accordingly the invention provides a cluster for use in a material handling conveyor, the cluster of the type having a plurality of freely rotatable rollers orbitally mounted on stationary shafts carried on the periphery of a housing having a rotor axis, characterized in that the housing is provided with a plurality of pairs of radial legs, each pair of legs having shaft receiving openings for mounting opposite axial ends of a roller supporting shaft therein along a shaft axis which is angled to the rotor axis, the opening in one leg rotatably supporting one end gn\01\5666.res 92 10 23 -Ib of the shaft while the opening in the second leg having means cooperating with means on the second end of the shaft for limiting the insertion of the second end in an outwardly axial direction in the second leg opening and for keying the shaft against rotation in the first leg opening, and means for securing the second end of the shaft in the second leg opening for preventing axial movement of the shaft outwardly from the one leg opening.
The cooperating means of the invention limits the axial movement of the roller supporting shaft in the paired mounting holes and further provides a shoulder for the locking nut to prevent axial movement of the shaft in the opposite axial direction.
Consequently a cluster for a material handling conveyor in accordance with the invention functions substantially the same whether it is wet or dry.
0 o o.0 The cluster of the present invention may provide .0 0 000 o0 00 o 0 e o 0 0 0000 0 0 a 0o o o gn\01\5666.res 92 10 23 r i-
I
4 I I -2- 44 4 4 444O 4 0 4g 4 *4g 4 0 44 *proevid low frictional forces relative to rotation of the rollers about their axes, w-eh4i0- is relatively inexpensive to manufacture and maintain, whieh- may readily be retrofitted to existing conv, ors, and 5-whi44h- has relatively high reliability and responsiveness.
These and other objects of the present invention will become more readily apparent from a perusal of the following detailed description and the 10 accompany drawings, wherein: Figure 1 is a plan view of shaft used in a material handling conveyor incorporating the present invention; Figure 2 is a plan view of one of the clusters shown in Figure 1; Figure 3 is an expanded view illustrating the mounting of one of the rollers of the cluster shown in figure 2; Figure 4 is a longitudinal cross-section of 20 the roller and a portion of the cluster shown in Figure 3; and Figure 5 is a detailed sectional view of the connection of the roller shaft to the cluster.
Referring now to Figure 1, there is shown one 25 shaft 10 of the plurality of shafts arranged on a frame and selectively driven by a chain trained over the sprocket 12 and a sprocket affixed to and driven by a reversible motor, as shown and described in the aforementioned patent application. A plurality of clusters 14 are affixed to the shaft 10 for rotation therewith. As shown best in Figure 2, a plurality of rollers 16 are arranged around the periphery of the body 18 of the cluster 14 and set at an angle of about degrees relative to the axis 20 of the cluster 14.
The rollers 16 are shaped to essentially define the 4 04 O 4 4 0 4 0 00 a e e o Dd 0 0 0 4 a 4.
,2> f surface of the central portion of a sphere and comprise the surfaces contacting the flat-bottomed object. J| Referring to Figure 3, the roller 16 is mounted for rotation on a shaft 22 which extends lj between a pair of outward-extending legs 24 and 26 formed on the body 18. The shaft 22 is retained in this position and restrained from rotation by a flat 28 formed on one end of the shaft 22, which end terminates in a reduced diameter threaded portion The leg 26 has a D-shaped hole 30, as best seen in Figure 5, which intersects with a bore 32 extending from the inner surface of the leg 26. The bore 32 is slightly larger than the major diameter of the shaft 22, as is an aligned bore 34 formed in the opposite leg 24. To assembly, the threaded end of the shaft 22 is inserted through the hole 34, the roller 16 and the hole 32 with the flat 28 engaging the D-shaped hole A locking nut 40 engages the threaded end 25 to i hold the assembly in place.
Flat washers 50 and 52 are positioned on the shaft 22 between the ends of the roller 16 and the inner side of the legs 24 and 26 respectively. These washers 50 and 52 are made of a hard material having a low coefficient of friction with the material of the evids of the roller 16, which may be made of an aluminum alloy. A suitable material for these washers and 52 is molybdenum filled nylon. The end surfaces 27 of the roller 16 function as the bearing surfaces for washers 50 and 52; the relative rotation being between the rotating roller and the stationary washers. As shown in Figure 4 bushings 54 and 56 are pressed into a central bore 58 formed in the roller 16. Thf shaft is preferably polished and made of a material which will not oxidize, such as stainless -4steel, so that water will not adversely affect performance of the roller. The bushings 54 and 56, therefore, must be composed of a material compatible with the shaft 22 and also possess a low coefficient of friction. A bushing that has been found to operate with superior results is a mild steel coated with a porous bronze which has been impregnated with polytetrafluoroethylene and lead. The combination of flat nylon washers at the ends of the roller 16 and the aforementioned bushings in the roller bore 58 to engage the stainless steel shaft 22 have produced superior results in both wet and dry conditions.
While one embodiment of the present invention has been shown and described herein, it will be i 15 appreciated that various changes may be made therein without departing from the spirit of the invention as defined by the scope of the appended claims.
The claims form part of the disclosure of this specification.
Claims (6)
1. A cluster for use in a material handling conveyor, the cluster of the type having a plurality of freely rotatable rollers orbitally mounted on stationary shafts carried on the periphery of a housing having a rotor axis, characterized in that the housing is provided with a plurality of pairs of radial legs, each pair of legs having shaft receiving openings for mounting opposite axial ends of a roller supporting shaft therein along a shaft axis which is angled to the rotor axis, the opening in one leg ,tatab.i supporting one end of the shaft while the opening in the second leg having means cooperating with means on the second end of the shaft for limiting the insertion of the second end in an outwardly axial direction in the second leg opening and for keying the shaft against rotation in the first leg opening, and means for securing the second end of the shaft in the second leg opening for preventing axial movement of the shaft outwardly from the one leg opening.
2. The cluster according to claim 1, characterized in that a pair of cylindrical bushings at opposite ends of a central bore in the roller diametrically separate the roller and the respective roller supporting shaft and that a pair of cylindrical flat washers rotatably mounted on the roller supporting shaft at axial opposite ends of the roller axially separate the roller from the respective radial legs of the housing.
3. The cluster according to claim 2, characterized in that the roller supporting shaft has a low coefficient of friction with respect to the bushings; and that the washers are formed of a hard material having a low coefficient of friction with respect to the roller.
4. The cluster according to claim 3, characterized in that the bushings are made of a mild steel coated with a porous bronze which has been impregnated with polytetrafluoroethylene and lead.
The cluster according to claim 3 or claim 4, characterized in that the washers are formed of molybdenum filled nylon.
6. A cluster for a material handling conveyor substantially as hereinbefore described with reference to the accompanying drawings. DATED this 6th day of July,, 1992. FMC CORPORATION CARTER SMITH BEADLE Qantas House 2 Railway Parade Cambcrwell 3124 Victoria Australia NB-57957.spc
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37902289A | 1989-07-12 | 1989-07-12 | |
| US379022 | 1989-07-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU5795790A AU5795790A (en) | 1991-01-17 |
| AU632338B2 true AU632338B2 (en) | 1992-12-24 |
Family
ID=23495492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU57957/90A Ceased AU632338B2 (en) | 1989-07-12 | 1990-06-28 | Material handling conveyor |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH0712851B2 (en) |
| KR (1) | KR0139422B1 (en) |
| AU (1) | AU632338B2 (en) |
| CA (1) | CA2019885C (en) |
| DE (1) | DE4021989C2 (en) |
| GB (1) | GB2233733B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2971384B2 (en) | 1995-12-28 | 1999-11-02 | 伊東電機株式会社 | Transfer device |
| DE10022617A1 (en) * | 2000-05-10 | 2001-11-15 | Manfred Rus | Transport roller for air freight containers comprises multi-part cast frame with arms which carry contact rollers forming its surface |
| US6409010B1 (en) * | 2000-05-17 | 2002-06-25 | Fmc Corporation | Split drive component with maintained alignment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2174966A (en) * | 1985-05-01 | 1986-11-19 | Fmc Corp | Multi directional roller conveyor |
| US4907692A (en) * | 1985-05-01 | 1990-03-13 | Fmc Corporation | Container translating and orienting apparatus and method |
| US4981209A (en) * | 1985-09-27 | 1991-01-01 | Fmc Corporation | Container translating and orienting apparatus and method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1052069A (en) * | ||||
| US1580367A (en) * | 1924-09-29 | 1926-04-13 | Standard Conveyor Co | Conveyer roller |
| GB761772A (en) * | 1953-09-03 | 1956-11-21 | Charles Perkins Robertson | Improvements in or relating to rollers for applying paint and the like |
| JPS436669Y1 (en) * | 1964-04-27 | 1968-03-26 | ||
| US3710917A (en) * | 1971-01-29 | 1973-01-16 | Dorr Oliver Inc | Conveying apparatus |
| CH582077A5 (en) * | 1974-07-12 | 1976-11-30 | Pfaff Haushaltmasch | |
| FR2278605A1 (en) * | 1974-07-17 | 1976-02-13 | Renault | FRICTION ROLLER FOR CARRIER |
| JPS5836985Y2 (en) * | 1977-07-20 | 1983-08-20 | 株式会社ニフコ | Liquid level detection device |
| GB2116905B (en) * | 1982-03-24 | 1986-02-12 | Vomaster Products Limited | Domestic waste compactor |
| US4645071A (en) * | 1984-09-24 | 1987-02-24 | Alpha Manufacturing, Inc. | Idler roll assembly |
-
1990
- 1990-06-26 CA CA002019885A patent/CA2019885C/en not_active Expired - Lifetime
- 1990-06-28 AU AU57957/90A patent/AU632338B2/en not_active Ceased
- 1990-07-02 GB GB9014683A patent/GB2233733B/en not_active Expired - Fee Related
- 1990-07-04 JP JP2177228A patent/JPH0712851B2/en not_active Expired - Lifetime
- 1990-07-11 DE DE4021989A patent/DE4021989C2/en not_active Expired - Lifetime
- 1990-07-11 KR KR1019900010445A patent/KR0139422B1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2174966A (en) * | 1985-05-01 | 1986-11-19 | Fmc Corp | Multi directional roller conveyor |
| US4907692A (en) * | 1985-05-01 | 1990-03-13 | Fmc Corporation | Container translating and orienting apparatus and method |
| US4981209A (en) * | 1985-09-27 | 1991-01-01 | Fmc Corporation | Container translating and orienting apparatus and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0346906A (en) | 1991-02-28 |
| GB2233733A (en) | 1991-01-16 |
| AU5795790A (en) | 1991-01-17 |
| GB9014683D0 (en) | 1990-08-22 |
| CA2019885A1 (en) | 1991-01-13 |
| DE4021989A1 (en) | 1991-01-17 |
| KR910002683A (en) | 1991-02-26 |
| CA2019885C (en) | 1996-06-18 |
| KR0139422B1 (en) | 1998-07-15 |
| DE4021989C2 (en) | 1994-06-09 |
| GB2233733B (en) | 1993-05-05 |
| JPH0712851B2 (en) | 1995-02-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |