GB2269648A - Improvements in conveyor rollers. - Google Patents

Improvements in conveyor rollers. Download PDF

Info

Publication number
GB2269648A
GB2269648A GB9217013A GB9217013A GB2269648A GB 2269648 A GB2269648 A GB 2269648A GB 9217013 A GB9217013 A GB 9217013A GB 9217013 A GB9217013 A GB 9217013A GB 2269648 A GB2269648 A GB 2269648A
Authority
GB
United Kingdom
Prior art keywords
roller
tubing
covering sleeve
unshrunk
conveyor
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.)
Withdrawn
Application number
GB9217013A
Other versions
GB9217013D0 (en
Inventor
Robert Melvill
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AIRSHRINK EUROP Ltd
Original Assignee
AIRSHRINK EUROP Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AIRSHRINK EUROP Ltd filed Critical AIRSHRINK EUROP Ltd
Priority to GB9217013A priority Critical patent/GB2269648A/en
Publication of GB9217013D0 publication Critical patent/GB9217013D0/en
Publication of GB2269648A publication Critical patent/GB2269648A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
    • B29C63/42—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using tubular layers or sheathings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/18—Cold vulcanisation
    • 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
    • B65G39/07—Other adaptations of sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/32—Wheels, pinions, pulleys, castors or rollers, Rims
    • B29L2031/324—Rollers or cylinders having an axial length of several times the diameter, e.g. embossing, pressing or printing

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)

Abstract

A conveyor roller has a covering sleeve applied thereto, for example to give increased roller life and quieter running, by applying loosely over the roller a length of tubing of a material which then cures without heat on exposure to the atmosphere to shrink into tight engagement with the roller.

Description

Improvements in Conveyor Rollers This invention relates generally to conveyor rollers and more specifically to a conveyor roller provided with a covering sleeve and to a method of application of the sleeve to the roller.
According to one aspect of the invention, there is provided a method of application of a covering sleeve to a conveyor roller in which a required length of tubing is placed around the roller, the tubing being of an internal diameter greater to a limited extent than the external diameter of the roller and being tubing of a material which cures with accompanying shrinkage on sustained exposure to the atmosphere without application of heat, and the applied unshrunk tubing is allowed to cure and shrink into tight engagement with the roller to form a covering sleeve thereon.
Assuming the covering sleeve is to extend the entire length of the conveyor roller, the required length of unshrunk tubing will be greater to a limited extent than the length of the roller, although on sustained exposure to the atmosphere the tubing shrinks less in the longitudinal direction than in the radial direction.
Sustained exposure to the atmosphere means an exposure of many minutes up to several hours. The preshrunk or unshrunk tubing is stored in a sealed container in the presence of chemicals which inhibit curing and shrinkage; when the unshrunk tubing is removed from the container a reasonable period, typically twenty to thirty minutes, is available to apply the unshrunk tubing around the conveyor roller before curing and shrinkage becomes too far advanced.
According to another aspect of the invention, there is provided a conveyor roller having a covering sleeve which has been applied by placing around the roller a required length of tubing of internal diameter greater to a limited extent than the external diameter of the roller, and curing the tubing with accompanying shrinkage of said tubing into tight engagement with the roller, thereby to form a covering sleeve thereon, the tubing being made of a material which has been cured with accompanying shrinkage on sustained exposure to the atmosphere without application of heat.
The invention may be used to apply covering sleeves to various sizes of conveyor roller. However, one diametrical size of unshrunk tubing will often be appropriate to a limited range of conveyor roller diameters. Typically, for example, tubing of unshrunk or preshrunk diameter 132 mm can be employed to form a covering sleeve on any conveyor roller in the diametrical range 100 to 130 mm.
A conveyor roller having a covering sleeve in accordance with the invention can be produced less expensively, especially in respect of labour costs, than rollers coated by other methods. Furthermore, application of the covering sleeve can be carried out on site, e.g. by the conveyor user instead of the roller manufacturer. Natural shrinkage on sustained exposure to the atmosphere is possible with unshrunk tubing of greater thickness than with heat-shrunk tubing, thus giving increased roller life and quieter running of the conveyor. The tubing nevertheless remains resilient throughout its long life. This in turn leads to selfcleaning properties in the case of wet-running conveyor rollers. It is also important in this connection that the material is impervious to water, aqueous acids and alkalis, and will protect the conveyor roller against corrosion.

Claims (8)

Claims
1. A method of application of a covering sleeve to a conveyor roller in which a required length of tubing is placed around the roller, the tubing being of an internal diameter greater to a limited extent than the external diameter of the roller and being tubing of a material which cures with accompanying shrinkage on sustained exposure to the atmosphere without application of heat, and the applied unshrunk tubing is allowed to cure and shrink into tight engagement with the roller to form a covering sleeve thereon.
2. A method according to claim 1, wherein, when the covering sleeve is to extend the entire length of the conveyor roller, the required length of unshrunk tubing is greater to a limited extent than the length of the roller.
3. A method according to claim 1 or claim 2, wherein the period of exposure to the atmosphere is an exposure of many minutes up to several hours.
4. A method according to any of claims 1 to 3 wherein, initially, the preshrunk or unshrunk tubing is stored in a sealed container in the presence of chemicals which inhibit curing and shrinkage.
5. A method according to claim 4 wherein, when the unshrunk tubing is removed from the container, it is applied around the conveyor roller within thirty minutes.
6. A conveyor roller having a covering sleeve which has been applied by placing around the roller a required length of tubing of internal diameter greater to a limited extent than the external diameter of the roller, and curing the tubing with accompanying shrinkage of said tubing into tight engagement with the roller, thereby to form a covering sleeve thereon, the tubing being made of a material which has been cured with accompanying shrinkage on sustained exposure to the atmosphere without application of heat.
7. A method of applying a covering sleeve to a roller substantially as hereinbefore described.
8. A conveyor roller having a covering sleeve substantially as hereinbefore described.
GB9217013A 1992-08-11 1992-08-11 Improvements in conveyor rollers. Withdrawn GB2269648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9217013A GB2269648A (en) 1992-08-11 1992-08-11 Improvements in conveyor rollers.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9217013A GB2269648A (en) 1992-08-11 1992-08-11 Improvements in conveyor rollers.

Publications (2)

Publication Number Publication Date
GB9217013D0 GB9217013D0 (en) 1992-09-23
GB2269648A true GB2269648A (en) 1994-02-16

Family

ID=10720165

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9217013A Withdrawn GB2269648A (en) 1992-08-11 1992-08-11 Improvements in conveyor rollers.

Country Status (1)

Country Link
GB (1) GB2269648A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997049535A1 (en) * 1996-06-27 1997-12-31 Polywest Kunststofftechnik Saueressig & Partner Gmbh & Co. Kg Form for rotary printing, coating or embossing of sheet-like materials, and process for producing said form

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5120279A (en) * 1987-07-03 1992-06-09 Ina Walzlager Schaeffler Kg Structural bearing element

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5120279A (en) * 1987-07-03 1992-06-09 Ina Walzlager Schaeffler Kg Structural bearing element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997049535A1 (en) * 1996-06-27 1997-12-31 Polywest Kunststofftechnik Saueressig & Partner Gmbh & Co. Kg Form for rotary printing, coating or embossing of sheet-like materials, and process for producing said form
US6143386A (en) * 1996-06-27 2000-11-07 Lorig; Heinz Form for rotary printing, coating or embossing of sheet-like materials, and process for producing said form

Also Published As

Publication number Publication date
GB9217013D0 (en) 1992-09-23

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)