GB2340104A - Protecting the edges of coils of steel strip by joining together coil protectors - Google Patents
Protecting the edges of coils of steel strip by joining together coil protectors Download PDFInfo
- Publication number
- GB2340104A GB2340104A GB9816718A GB9816718A GB2340104A GB 2340104 A GB2340104 A GB 2340104A GB 9816718 A GB9816718 A GB 9816718A GB 9816718 A GB9816718 A GB 9816718A GB 2340104 A GB2340104 A GB 2340104A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- protector
- shape
- protectors
- coil protector
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
- B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
- B65D81/053—Corner, edge or end protectors
- B65D81/054—Protectors contacting two generally perpendicular surfaces of the packaged article, e.g. edge protectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D59/00—Plugs, sleeves, caps, or like rigid or semi-rigid elements for protecting parts of articles or for bundling articles, e.g. protectors for screw-threads, end caps for tubes or for bundling rod-shaped articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D2581/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
- B65D2581/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
- B65D2581/051—Details of packaging elements for maintaining contents at spaced relation from package walls, or from other contents
- B65D2581/052—Materials
- B65D2581/055—Plastic in general, e.g. foamed plastic, molded plastic, extruded plastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D2581/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
- B65D2581/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
- B65D2581/051—Details of packaging elements for maintaining contents at spaced relation from package walls, or from other contents
- B65D2581/057—Edge protectors adapted to protect the circular edge of rolls of material, e.g. coils of sheet metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/66—Containers, packaging elements or packages, specially adapted for particular articles or materials for jumbo rolls; for rolls of floor covering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Description
2340104 COIL PROTECTION The present invention relates to a method of
joining bore protectors, that is, the protective elements applied to coils of strip steel and the like.
After production, steel strip is wound into coils, and these coils are packaged in a protective film wrap, made of a plastic material, in order to protect the steel coil against rust and chemical corrosion and to maintain the coil in good condition. Typically, the protective film wrap is arranged axially on the coil to completely cover all surfaces of the coil, and thus extends over the external surfaces of the coil and passes through the inner bore of the coil. This protective fdm wrap is applied by means of a machine comprising a shuttle, which carries the protective film wrap through the bore and around the outside of the steel coil.
There is, however, a need for protection of the protective film wrap from damage and tearing on the sharp edges of the steel strip, in particular around the circumference of the bore at either end of the coil (the 'inner edge'), and around the external circumference of either end of the coil (the 'outer edge'). There is additionally a need for protection of the edges of the steel strip from damage during lifting of the coil by the lifting tongs of the lifting machinery, and from being damaged during transportation. The need for protection at the inner and outer edges of the coil as described above is thus known, and coil protectors are therefore in use at various steel production plants. These comprise simple plastic devices designed to fit along the inner or outer edges of the coil, positioned by an operator prior to the application of the protective film wrapping.
A conventional type of coil protector comprises a strip of material having triangular notches along one side, so that similar triangles of material remain, the notches extending about halfway into the material. In use, a line is scored so as to join the apices of the notches, and the triangles of material are bent over perpendicular to the remaining strip of material. The material is now applied to the inner and outer edges of a coil, the triangular portions of material allowmig the remaining strip of material to be bent so as to encompass the circumference of the circles of the inner and outer edges of the coil.
The bore of the coil is usually held constant in a factory, so the inner coil protector, also known as a bore protector, may be cut to predetermined lengths, or even preformed with the correct circumference. The outer circumference of the coil however will vary depending upon the length and thickness of the steel strip that has been wound, so the coil protector applied to the outer circumference is usually supplied wound upon drums in lengths sufficient for several coils, and is cut to the length required for each coil.
In one method of applying the coil protector to the coil, the strips of material, having had the triangular notches cut out but not yet having been bent, are coiled into drums. Several drums are loaded onto two trolleys, the drums on one trolley having their triangles pointing in one direction, those on the other having their triangles pointing in the opposite direction. A strip of material from one of the drums upon each of the trolleys is fed into the coil protector applicator to be automatically unwound, the triangular portions are bent perpendicularly downwards, with the scored line inside the perpendicular angle, and the coil protector applied to outer edges of the waiting steel strip coils, and secured by some means such as adhesive prior to the coil being wrapped. When a drum of coil protector is almost finished, any remaining material insufficient to encompass a whole coil is discarded, and a strip of material form a fresh drum is inserted manually into the coil protector applicator.
The delay whilst a fresh drum is inserted is undesirable. So too is the wastage produced by having to discard a remainder of material from the end of each drum.
The object of the present invention is to provide a means of reducing the delay whilst drums of coil protector are changed, and to reduce the stage of material.
According to the invention there is provided a means for joining ends of separate lengths of coil protectors for steel strip coils and the like, so as to form a continuous length.
Preferably, the invention provides a means for the cutting of shapes on both the different ends to be joined, such that the shapes engage without 2 significantly increasing the thickness of the material, and means to secure the material.
Preferably, the engaging shapes are interlocking, that is, the shapes have recesses and projections to interlock or hook together, and are adapted so as to slot together easily, and to be structurally secure.
Preferably, the joining means include a means to secure the engaging or interlocking shapes, such as welding.
A coil protection means embodying the invention will now be described, with reference to the drawings, of which; Figure 1 shows the front elevation of the coil protection application system. Figure 2 shows a side elevation of the coil protection application system. Figure 3 a shows two ends of the modified coil protector to be joined, and Figure 3b shows two ends of the modified coil protector having been joined Refer-ring to Figure 1, the drums 45 of wound coil protector 22 are mounted upon two trolleys 44, so that the triangles of material on the coil protector upon one trolley are pointing in the opposite direction to those on the other trolley. Strips of coil protector from the foremost drum of each trolley are fed through a welding apparatus 40 into the coil protector applicator 30, whose pulling upon the coil protector causes the drums to unwind, as they rotate upon axles.
Referring to Figure 2, the coils of wound strip steel are loaded onto a coil protector applicator 30. The diameter of the coil having been measured and entered into the coil protector applicator. The triangles of both strips of coil protector are bent downwards in the coil protector applicator, and applied to opposite end of the outer circumference of the coil. From the data entered, the coil protector applicator calculates how much coil protector is needed and then severs each strip of coil protector to the desired length. The coil protector is then applied in the manner previously described Referring to Figure 3a, a conventional coil protector has a strip 2') and triangular projections 24. The coil protector is modified by a forming means such as being cut by a cropping tool, which cuts a shape 25, similar to an arrow 3 in form, from one end of a coil protector, whilst another shape is cut from opposite end so as to leave a corresponding indented arrow shape 26 of material remaining. All the strips of coil protector are treated in this way.
Preferably, this is done during manufacture of the coil protector. When the coil protector is being produced, usually by extrusion, in a continuous strip, and then is cut into sections, instead of the conventional straight cut perpendicular to the length of the strip, the corresponding arrow shapes may instead be cut. The corresponding shapes could be generated during a single cut, and so reduce the amount of material wasted during cutting.
When the drum of coil protector being used is almost exhausted, it is unwound so as to expose its following end, and the leading end of a strip coil protector material from a new drum is introduced to it so as to interlock. If slack is present due to the unreeling of the first drum, the second drum is rotated so as to rewind some of the excess coil protector back upon the second drum. The unreeling of the final portion of the drum of coil protector, the interlocking with the new coil protector, and the retensionig of the new drum are carTied out by hand, but could be easily adapted for automated connection. The method could also be applied to reels of coil protector that have been wound upon themselves, rather than wound upon a drum. As in the conventional process, the trolleys are wheeled forward slightly so that the strip being fed into the coil protector applicator always occupies the same position.
Referring to Figure 3b, the two corresponding shapes at each end of the coil protectors are introduced together so as to interlock, and then the welding apparatus welds the interface of the mated shapes, represented here by a shaded region. RF welding is used, though other types of welding method may of course be used, or other types of joining such as the application of pressure or adhesives used in conjunction or instead of welding. The weld is then inspected as to its quality, either visually or by some automated procedure, and if it is found to be inadequately welded, the procedure is repeated. The two portions of coil protector are now securely joined and the new drum of coil protector may be applied to the steel coils seemlessly following coil protector from the previous drum.
in this manner, there is less delay whilst drums are changed over, and material need no longer be discarded.
4 If the coil protectors are of the conventional type, the forming means could be included to act on them after they are loaded upon the coil protector applicator, for example cutting means could be provided within the coil protector applicator, or included in the welding apparatus. The welding apparatus itself could also be conveniently located within the coil protector applicator.
The arrow shape is well adapted to interlocking and securement, as the male part 25 may be slid forward (in the direction that the arrow points) and will to some extent guide itself towards correct alignment with the female part 26. Additionally, the portion of the arrow's head were it meets the arrow's shaft enables the join to withstand some degree of tensile force exerted longitudinally. It will be realised though that alternative shapes may be used with equal success. Additionally, other features such as grooves could be stamped into the material in order to assist the marriage of the male and female parts, or to supplement their securement. Since the arrow shape is longitudinally symmetrical, the orientation of the coil protectors is immaterial. Alterriatively, a shape having 180 degree rotational symmetry could be chosen in order that the leading edge and the lagging edge of the coil protector may be equivalently used.
The joining of the two interlocking shapes of the two coil protectors may be supplemented by or replaced with another joining process, such as the application of an adhesive.
Should it be necessary to supply protectors in lengths greater than a single circumference, for example if it was necessary to vary the bore of the coil, this process could equally be applied to bore protector. It will be realised that other types of coil protector which are produced in discrete lengths may be amenable to this process.
Claims (16)
1. A method of forming a length of coil protector for protecting the edges of coils of steel strip and the like, by joining two or more separate lengths of coil protectors.
2. Forming a shape upon or close to the end of a coil protector for protecting the edges of coils of steel strip and the like, the shape being such that it may engage with a corresponding shape formed upon a further coil protector.
3. Forming a shape upon or close to the end of a coil protector according to claim 2 wherein the engaging shape includes projections or recesses, such that it interlocks with and hooks upon the corresponding shape formed upon the further coil protector.
4. Forming a shape upon or close to the end of a coil protector according to claims 2 or 3 wherein the coil protectors are formed from a continuous length of material, and upon division of the continuous length into separate lengths, a shape upon a further coil protector is produced by the formation of the corresponding shape upon the first coil protector.
5. A method of joining coil protectors for protecting the edges of coils of steel strip and the like, by engaging mating shapes formed upon or close to the end of the ends of the coil protectors.
6. A method of joining coil protectors according to claim 5 wherein the engaging shapes to be joined include projections or recesses, such that they interlock and hook upon each other.
7. A method of joining coil protectors according to claim 5 or 6 wherein a reel of coil protector, having been fed through an coil protector applicator and partly consumed, is fully unwound, and a new reel of coil protector is somewhat unwound, and the two exposed ends engaged.
8. A method of joining coil protectors according to claim 7 wherein the slack from the now continuous length of coil protector is taken up by winding some of the coil protector back.
6
9. A method of joining coil protectors for protecting the edges of coils of steel strip and the like, which includes the welding together of the two ends to be joined.
10. An apparatus for forming a shape upon or close to the end of a coil protector for protecting the edges of coils of steel strip and the like, such that the shape may engage with a corresponding shape formed upon a further coil protector.
11. An apparatus for fonning a shape upon or close to the end of a coil protector according to claim 10 wherein the engaging shape includes projections or recesses, such that it interlocks with and hooks upon the corTesponding shape formed upon the further coil protector.
12. An apparatus for joining coil protectors for protecting the edges of coils of steel strip and the like, by engaging mating shapes formed upon or close to the ends of the coil protectors.
13. An apparatus for joining coil protectors according to claim 12 wherein the engaging shapes includes projections or recesses, such that the shapes interlock with and hook upon one another.
14. An apparatus of joining coil protectors for protecting the edges of coils of steel strip and the like, which includes means for welding together of the ends of the coil protectors.
15. A coil protector for protecting the edges of coils of steel strip and the like, having an end or region close to the end adapted so as to include a shape, such that it will engage with a corresponding shape of a fin-ther coil protector.
16. A coil protector according to claim 15 wherein the engaging shape includes recesses or projections so as to interlock with and hook upon the corresponding shape of a further coil protector.
7
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9816718A GB2340104A (en) | 1998-08-01 | 1998-08-01 | Protecting the edges of coils of steel strip by joining together coil protectors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9816718A GB2340104A (en) | 1998-08-01 | 1998-08-01 | Protecting the edges of coils of steel strip by joining together coil protectors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9816718D0 GB9816718D0 (en) | 1998-09-30 |
| GB2340104A true GB2340104A (en) | 2000-02-16 |
Family
ID=10836503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9816718A Withdrawn GB2340104A (en) | 1998-08-01 | 1998-08-01 | Protecting the edges of coils of steel strip by joining together coil protectors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2340104A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2367800A (en) * | 2000-10-10 | 2002-04-17 | Lin Pac Mouldings | Edge protection strip |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646007A (en) * | 2020-06-22 | 2020-09-11 | 杭州鲁尔新材料科技有限公司 | Cold chain insulation can shocks resistance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986007471A1 (en) * | 1985-06-12 | 1986-12-18 | Digital Equipment Corporation | Means for pulling tape from a reel |
| US5020736A (en) * | 1989-01-23 | 1991-06-04 | Jagenberg Aktiengesellschaft | Device for connecting strips of material |
| WO1994029196A1 (en) * | 1993-06-16 | 1994-12-22 | Corrugated Plastic Products Limited | Edge protector element |
| GB2300409A (en) * | 1994-12-17 | 1996-11-06 | Pentre Group Ltd | Lagging for a cable drum |
| GB2316905A (en) * | 1996-09-06 | 1998-03-11 | Itw Ltd | Protection of the edge of roll shaped articles |
-
1998
- 1998-08-01 GB GB9816718A patent/GB2340104A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986007471A1 (en) * | 1985-06-12 | 1986-12-18 | Digital Equipment Corporation | Means for pulling tape from a reel |
| US5020736A (en) * | 1989-01-23 | 1991-06-04 | Jagenberg Aktiengesellschaft | Device for connecting strips of material |
| WO1994029196A1 (en) * | 1993-06-16 | 1994-12-22 | Corrugated Plastic Products Limited | Edge protector element |
| GB2300409A (en) * | 1994-12-17 | 1996-11-06 | Pentre Group Ltd | Lagging for a cable drum |
| GB2316905A (en) * | 1996-09-06 | 1998-03-11 | Itw Ltd | Protection of the edge of roll shaped articles |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2367800A (en) * | 2000-10-10 | 2002-04-17 | Lin Pac Mouldings | Edge protection strip |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9816718D0 (en) | 1998-09-30 |
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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) |