US3016235A - Pulley for a conveyor belt - Google Patents

Pulley for a conveyor belt Download PDF

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Publication number
US3016235A
US3016235A US24697A US2469760A US3016235A US 3016235 A US3016235 A US 3016235A US 24697 A US24697 A US 24697A US 2469760 A US2469760 A US 2469760A US 3016235 A US3016235 A US 3016235A
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United States
Prior art keywords
pulley
discs
conveyor belt
journals
bars
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US24697A
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Maurice F Cnudde
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
    • C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
    • C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
    • C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B25/00—Annealing glass products
    • C03B25/04—Annealing glass products in a continuous way
    • C03B25/06—Annealing glass products in a continuous way with horizontal displacement of the glass products
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
    • C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
    • C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
    • C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
    • C03B35/188—Rollers specially adapted for supplying a gas, e.g. porous or foraminous rollers with internal air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/02—Skids or tracks for heavy objects
    • F27D3/026—Skids or tracks for heavy objects transport or conveyor rolls for furnaces; roller rails

Definitions

  • the invention relates to a pulley for an endless conveyor belt and particularly to a pulley for a belt travelling through heat treatment furnaces such as an annealing furnace for glass articles.
  • the belt is generally driven at the furnace exit by a driving pulley about which is looped the belt which then returns towards the entrance, becom-ing heated during its return travel.
  • a driving pulley At the entrance, it passes about a reversal pulley and before receiving the appropriate load, its temperature has to be brought to the temperature of the load by an additional heating arrangement.
  • This heating of the belt involves the heating of the reversal pulley.
  • the pulley is generally solid or is constituted by a tube provided at its ends with journals supported by bearings. The pulley absorbs an appreciable quantity of heat and its high temperature is communicated to the journals and the bearings, which, therefore, are subjected to rapid wear.
  • FIGURE 1 is a view, partly in elevation and partly in axial section, of a pulley in accordance with the invention
  • FIGURE 2 is a sectional view taken on the line II-Il of FIGURE 1;
  • FIGURE 3 shows a jet-type heating pipe.
  • the pulley comprises bars 1 made'of a refractory steel which are engaged in radial notches in end discs 2 to constitute a squirrel cage pulley.
  • Journals 3 are fixed at each side of the pulley to the two end discs and are supported by bearings (not shown in the drawings).
  • the journals are hollow and through one of them there extends an axial heating jet pipe 4 supplied with gas at one end 5 see FIGURE 3 and provided with orifices 6 located around that portion of the pipe which is arranged to be situated Within the squirrel cage pulley between the journals. The flames reach the conveyor belt directly through the bars and the journals are kept away from the heat.
  • a hollow reversal pulley for an endless conveyor which they are exposed, and are rapidly made unusable by oxidation and deformation.
  • the reversal pulley according to the present invention overcomes the many disadvantages of the pulleys which are at present in use in annealing furnaces.
  • the pulley is constituted by a squirrel cage through whose bars the conveyor belt can be heated to the requisite temperature, whilst avoiding subjecting the bearings of the pulley journals to a harmful amount of heat.
  • the mass of the squirrel cage and, therefore, the heat lost, are less than in the case of solid or tubular pulleys.
  • refractory steel bars of suitable dimensions are generally available from steel producers.
  • the pulley constituted by a squirrel cage advantageously comprises discs connected together peripherally by the bars which are lodged in radial notches of the discs, journals being fixed at each side of the cage to the, two end discs.
  • These journals are preferably hollow and make it possible to introduce axially of the pulley through one of them a heating means constituted by a jet pipe whose flames are directed towards the belt. surfaces at which the bars and discs contact one another are small ma and the end discs are not exposed to the flames, the journals and bearings cannot become heated in a manner detrimental to their satisfactory operation.
  • a hollow reversal pulley for an endless conveyor belt comprising: first and second. side circular discs in spaced relation, a shell connected to said discs,
  • said shell including a plurality of flat bars spaced on said discs, hollow journal members, each of said discs being coaxially supported on one of said journal members, and heating means extending axially in said journals for heating said pulley and conveyor belt, said heating means being axially movable with respect to said journals.

Description

Jan. 9, 1962 M. F. CNUDDE mummy FOR A CONVEYOR BELT Filed April 26, 19 60 O Q Q 0 O O O Q 6 O O L O 9 2 O O O 0 United States Patent PULLEY FOR A CONVEYOR BELT Maurice F. Cnudde, 51B Chaussee de Charleroi, Brussels 6, Belgium Filed Apr. 26, 1960, Ser. No. 24,697 Claims priority, application Belgium May 13, 1959 a 4 Claims. (Cl. 263-8) The invention relates to a pulley for an endless conveyor belt and particularly to a pulley for a belt travelling through heat treatment furnaces such as an annealing furnace for glass articles.
Since the articles to be treated in a furnace of this kind generally enter the furnace in the hot state and issue from the furnace in the cooled state, the belt is generally driven at the furnace exit by a driving pulley about which is looped the belt which then returns towards the entrance, becom-ing heated during its return travel. At the entrance, it passes about a reversal pulley and before receiving the appropriate load, its temperature has to be brought to the temperature of the load by an additional heating arrangement. This heating of the belt involves the heating of the reversal pulley. According to its diameter, the pulley is generally solid or is constituted by a tube provided at its ends with journals supported by bearings. The pulley absorbs an appreciable quantity of heat and its high temperature is communicated to the journals and the bearings, which, therefore, are subjected to rapid wear.
A further disadvantage is that the choice of metals which can be used for tubular pulleys is very limited. It is necessary to restrict the choice to mild steel tubes which do not resist very well the high temperature to 3,016,235 Patented Jan. 9, 1962 by way of example in the accompanying drawings in which:
FIGURE 1 is a view, partly in elevation and partly in axial section, of a pulley in accordance with the invention;
FIGURE 2.is a sectional view taken on the line II-Il of FIGURE 1; and
FIGURE 3 shows a jet-type heating pipe.
The pulley comprises bars 1 made'of a refractory steel which are engaged in radial notches in end discs 2 to constitute a squirrel cage pulley. Journals 3 are fixed at each side of the pulley to the two end discs and are supported by bearings (not shown in the drawings). The journals are hollow and through one of them there extends an axial heating jet pipe 4 supplied with gas at one end 5 see FIGURE 3 and provided with orifices 6 located around that portion of the pipe which is arranged to be situated Within the squirrel cage pulley between the journals. The flames reach the conveyor belt directly through the bars and the journals are kept away from the heat.
The invention is not, of course, limited to the form of embodiment which has been described and illustrated by way of example, and modifications could be made thereto without departing from the scope'of the said invention.
I claim:
1. A hollow reversal pulley for an endless conveyor which they are exposed, and are rapidly made unusable by oxidation and deformation.
The reversal pulley according to the present invention overcomes the many disadvantages of the pulleys which are at present in use in annealing furnaces.
According to the invention the pulley is constituted by a squirrel cage through whose bars the conveyor belt can be heated to the requisite temperature, whilst avoiding subjecting the bearings of the pulley journals to a harmful amount of heat. The mass of the squirrel cage and, therefore, the heat lost, are less than in the case of solid or tubular pulleys. Furthermore, refractory steel bars of suitable dimensions are generally available from steel producers.
The pulley constituted by a squirrel cage advantageously comprises discs connected together peripherally by the bars which are lodged in radial notches of the discs, journals being fixed at each side of the cage to the, two end discs. These journals are preferably hollow and make it possible to introduce axially of the pulley through one of them a heating means constituted by a jet pipe whose flames are directed towards the belt. surfaces at which the bars and discs contact one another are small mama and the end discs are not exposed to the flames, the journals and bearings cannot become heated in a manner detrimental to their satisfactory operation.
One form of embodiment of the invention is illustrated Since the discs in spaced relation, a shell connected to said discs, said shell including a plurality of flat bars spaced on said discs, a hollow journal coaxially fixed on each of said side discs and heating means extending between said journals for heating said pulley and conveyor belt.
2. A hollow reversal pulley for an endless conveyor belt,-said pulley comprising: first and second. side circular discs in spaced relation, a shell connected to said discs,
said shell including a plurality of flat bars spaced on said discs, hollow journal members, each of said discs being coaxially supported on one of said journal members, and heating means extending axially in said journals for heating said pulley and conveyor belt, said heating means being axially movable with respect to said journals.
3. A pulley as claimed in claim 2 wherein said heating means includes a circular pipe provided with a plurality of apertures, said pipe being adapted for connection with a source of heat.
4. A pulley as claimed in claim 2 wherein said flat bars are equally spaced along the periphery of the circular side discs and are radially directed therewith, said flat bars extendingin part radially beyond theperiphery of Hageline Apr. 9, 1957
US24697A 1959-05-13 1960-04-26 Pulley for a conveyor belt Expired - Lifetime US3016235A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680848A (en) * 1971-02-18 1972-08-01 Sola Basic Ind Inc Internal idler drum
FR2318412A1 (en) * 1975-07-18 1977-02-11 Clayton Manufacturing Co TEST BENCH ROLLER, ESPECIALLY FOR BRAKING MOTOR VEHICLES
US6740172B1 (en) * 2002-06-06 2004-05-25 Terry Cemlyn Griffiths Modular belt cleaning apparatus
US20040188228A1 (en) * 2003-03-31 2004-09-30 Dow Paul W. Blade pulley
US20040231965A1 (en) * 2003-03-31 2004-11-25 Dow Paul W. Blade pulley
USRE39186E1 (en) * 2000-04-28 2006-07-18 Montgomery Preston D Conveyor and conveyor belt cleaning sprocket
US20070084699A1 (en) * 2005-10-14 2007-04-19 Chris Smith Conveyor belt cleaning apparatus and system
US7407051B1 (en) * 2007-04-11 2008-08-05 Mike Farris Nozzleless conveyor belt and sprocket cleaning shaft
US20080190462A1 (en) * 2007-02-08 2008-08-14 Habasit Ag Sprocket For Easy Cleaning
US20090050185A1 (en) * 2007-02-08 2009-02-26 Dieter Guldenfels Cleaning-in-place system
US20110061693A1 (en) * 2007-02-08 2011-03-17 Marco Lucchi Cleaning-In-Place System For Flat Belts
US20110094856A1 (en) * 2007-02-08 2011-04-28 Dieter Guldenfels Modular Belt Sprocket For Easy Cleaning
US20140235384A1 (en) * 2013-02-21 2014-08-21 Kyocera Document Solutions Inc. Belt driving mechanism, belt driving apparatus, and pulley
US8863489B2 (en) 2011-03-30 2014-10-21 H & S Manufacturing Co., Inc. Tine drive cam for windrow merger
US8997975B2 (en) 2010-08-13 2015-04-07 Habasit Ag Sprockets for a flexible conveyor belt and conveyor belt system
NL2019448B1 (en) * 2017-08-25 2019-03-07 Ftnon Almelo B V ENDLESS TRANSPORTER AND A ROLE THEREFORE

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2023611A (en) * 1935-06-18 1935-12-10 Jacob J Neuman Pulley or idler
US2232623A (en) * 1939-01-30 1941-02-18 Us Patent Dev And Royalty Comp Slatted conveyer pulley
US2240386A (en) * 1941-02-20 1941-04-29 Butterworth H W & Sons Co Reel for dyeing machines and the like
US2356026A (en) * 1942-03-27 1944-08-15 Courtaulds Ltd Reel
US2758482A (en) * 1953-10-23 1956-08-14 Lathrop Paulson Co Belt drive and guide therefor
US2787913A (en) * 1955-02-08 1957-04-09 Lathrop Paulson Co Pulley and method of forming

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2023611A (en) * 1935-06-18 1935-12-10 Jacob J Neuman Pulley or idler
US2232623A (en) * 1939-01-30 1941-02-18 Us Patent Dev And Royalty Comp Slatted conveyer pulley
US2240386A (en) * 1941-02-20 1941-04-29 Butterworth H W & Sons Co Reel for dyeing machines and the like
US2356026A (en) * 1942-03-27 1944-08-15 Courtaulds Ltd Reel
US2758482A (en) * 1953-10-23 1956-08-14 Lathrop Paulson Co Belt drive and guide therefor
US2787913A (en) * 1955-02-08 1957-04-09 Lathrop Paulson Co Pulley and method of forming

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680848A (en) * 1971-02-18 1972-08-01 Sola Basic Ind Inc Internal idler drum
FR2318412A1 (en) * 1975-07-18 1977-02-11 Clayton Manufacturing Co TEST BENCH ROLLER, ESPECIALLY FOR BRAKING MOTOR VEHICLES
USRE39186E1 (en) * 2000-04-28 2006-07-18 Montgomery Preston D Conveyor and conveyor belt cleaning sprocket
US6740172B1 (en) * 2002-06-06 2004-05-25 Terry Cemlyn Griffiths Modular belt cleaning apparatus
US20040188228A1 (en) * 2003-03-31 2004-09-30 Dow Paul W. Blade pulley
US20040231965A1 (en) * 2003-03-31 2004-11-25 Dow Paul W. Blade pulley
US6935488B2 (en) 2003-03-31 2005-08-30 Oxbo International Corporation Blade pulley
US7070042B2 (en) 2003-03-31 2006-07-04 Oxbo International Corporation Blade pulley
EP1561713A2 (en) * 2004-01-29 2005-08-10 Oxbo International Corporation Blade pulley
EP1561713A3 (en) * 2004-01-29 2005-09-07 Oxbo International Corporation Blade pulley
US20070084699A1 (en) * 2005-10-14 2007-04-19 Chris Smith Conveyor belt cleaning apparatus and system
US7370749B2 (en) 2005-10-14 2008-05-13 Safari Belting Systems, Inc. Conveyor belt cleaning apparatus and system
US8776989B2 (en) 2007-02-08 2014-07-15 Habasit Ag Modular belt sprocket for easy cleaning
US20090050185A1 (en) * 2007-02-08 2009-02-26 Dieter Guldenfels Cleaning-in-place system
US20110061693A1 (en) * 2007-02-08 2011-03-17 Marco Lucchi Cleaning-In-Place System For Flat Belts
US20110094856A1 (en) * 2007-02-08 2011-04-28 Dieter Guldenfels Modular Belt Sprocket For Easy Cleaning
US8668075B2 (en) * 2007-02-08 2014-03-11 Habasit Ag Cleaning-in-place system
US9850072B2 (en) 2007-02-08 2017-12-26 Habasit Ag Cleaning-in-place system for flat belts
US20080190462A1 (en) * 2007-02-08 2008-08-14 Habasit Ag Sprocket For Easy Cleaning
US7407051B1 (en) * 2007-04-11 2008-08-05 Mike Farris Nozzleless conveyor belt and sprocket cleaning shaft
US8997975B2 (en) 2010-08-13 2015-04-07 Habasit Ag Sprockets for a flexible conveyor belt and conveyor belt system
US9038358B2 (en) 2011-03-30 2015-05-26 H & S Manufacturing Co., Inc. Drive mechanism for a windrow merger
US8863489B2 (en) 2011-03-30 2014-10-21 H & S Manufacturing Co., Inc. Tine drive cam for windrow merger
US9295189B2 (en) 2011-03-30 2016-03-29 H & S Manufacturing Co., Inc. Windrow merger pickup head shiftable mount
US9222572B2 (en) * 2013-02-21 2015-12-29 Kyocera Document Solutions Inc. Belt driving mechanism, belt driving apparatus, and pulley
US20140235384A1 (en) * 2013-02-21 2014-08-21 Kyocera Document Solutions Inc. Belt driving mechanism, belt driving apparatus, and pulley
NL2019448B1 (en) * 2017-08-25 2019-03-07 Ftnon Almelo B V ENDLESS TRANSPORTER AND A ROLE THEREFORE

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