EP1979107A1 - Procede et agencement d'emballage ameliore - Google Patents

Procede et agencement d'emballage ameliore

Info

Publication number
EP1979107A1
EP1979107A1 EP06844043A EP06844043A EP1979107A1 EP 1979107 A1 EP1979107 A1 EP 1979107A1 EP 06844043 A EP06844043 A EP 06844043A EP 06844043 A EP06844043 A EP 06844043A EP 1979107 A1 EP1979107 A1 EP 1979107A1
Authority
EP
European Patent Office
Prior art keywords
mandrel
arrangement according
contact
around
arrangement
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.)
Granted
Application number
EP06844043A
Other languages
German (de)
English (en)
Other versions
EP1979107B1 (fr
EP1979107A4 (fr
Inventor
Mats Eriksson
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.)
Bergs Engineering AB
Original Assignee
Bergs Engineering AB
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 Bergs Engineering AB filed Critical Bergs Engineering AB
Publication of EP1979107A1 publication Critical patent/EP1979107A1/fr
Publication of EP1979107A4 publication Critical patent/EP1979107A4/fr
Application granted granted Critical
Publication of EP1979107B1 publication Critical patent/EP1979107B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/32—Tongs or gripping means specially adapted for reeling operations
    • B21C47/326—Devices for pressing the end of the material being wound against the cylindrical wall of the reel or bobbin

Definitions

  • the present invention concerns sheet wrapping in general, especially methods and arrangements for improved initial wrapping of the end of a steel sheet on a mandrel.
  • An object of the present invention is to provide methods and arrangements for wrapping material around a mandrel.
  • a further object is to provide improved wrapping of sensitive materials. Another object is to provide a space efficient wrapper for coilable material.
  • Yet another object is to provide a pivoting roller wrapper.
  • a first aspect the invention comprises a wrapper arrangement with a forming tool comprising two contact organs for contacting the surface of the material to be wrapped and bringing at least a section of the material into contact with a mandrel.
  • the forming tool is further adapted to be able to rotate around the central axis of the mandrel and in coordination with the rotation of the mandrel to enable and maintain contact between the material and the outer surface of the mandrel until the end of the material is securely fastened between the incoming material and the outer surface of the mandrel.
  • At least the surfaces of the contact means and/ or the mandrel comprise an elastic material to reduce the risk of sliding between the material and the contact means /mandrel during wrapping, thereby further reducing the risk of surface damage.
  • a more cost efficient wrapping arrangement A more space efficient wrapping arrangement.
  • FIG. 1 is a schematic illustration of a basic embodiment of an arrangement according to the invention
  • FIG. 2 illustrates another schematic embodiment according to the invention
  • Fig. 3 illustrates the movement of the embodiment of Fig. 2;
  • Fig. 4 illustrates another embodiment of an arrangement according to the invention
  • Fig. 5 is a perspective view of the embodiment of Fig. 4;
  • Fig 6 illustrates the movement of the embodiment of Fig. 4;
  • Fig 7a-i illustrate various stages of operation of an embodiment according to the invention.
  • the present invention will be described in the context of wrapping sheets/strips of metal on a mandrel. However, the methods and arrangements are similarly applicable to wrapping of other more or less rigid coilable materials.
  • a belt wrapper utilizes a driven belt that is brought into contact with the material to guide it onto a mandrel/ coiler. Thereby the wrapper is in contact with a large surface of the material to be wrapped. This increases the risk of surface damage due to slipping since the potentially damage inducing surface is large.
  • the machinery for driving the belt is both complex and space consuming.
  • the present invention comprises a wrapper which manages wrapping material with a small contact area between the material and the wrapper, and which is both simple and space consuming in relation to known wrappers.
  • An arrangement according to a basic embodiment of the present invention comprises a forming tool 3 that only maintains contact with the surface of the material at two points 3a, 3b.
  • Figure 1 illustrates the basic concept of the present invention for the situation with a strip of incoming material 1 with an end extending over a top most point of a mandrel 2.
  • a forming tool 3 comprises two contact units 3a, 3b that are configured to be brought into contact with the surface of the material that extends over the mandrel 2.
  • the contact units 3a, 3b are rotatably attached to the forming tool 3 and are connected via a connection piece Ic to each other, preferably rigidly connected to maintain a constant distance between the contact means 3a, 3b.
  • the forming tool 3 is moved such that the contact units 3a, 3b bring at least a section of the material 1 into contact with the outer surface of the mandrel 2, thereby forming the material 1 around the mandrel 2.
  • the forming tool 3 is designed to be able to rotate around the mandrel, while maintaining contact between the surface of the material 1 and the mandrel 2.
  • the mandrel 1 and the forming tool 3 are rotated together or coordinately to further wrap the material 1 around the mandrel 2.
  • the predetermined length can also be expressed as the total angle that the forming tool 1 has moved around the mandrel axis. The coordinated rotation is maintained until the outmost end of the material 1 is secured between the outer surface of the mandrel 2 and the incoming material 1.
  • the forming tool 3 is adapted to remain stationary at some predetermined angle until the material 1 has been sufficiently wrapped around the mandrel 2 i.e. three laps. Thereafter the forming tool 3 is removed from contact with the material 1 and returned to a starting position and the mandrel rotation can be increased to coiling speed.
  • the shape of the forming tool 3 is such as to prevent contact between the forming tool 3 and the material 1 at any other point other than at the two contact units 3a, 3b.
  • the forming tool 3 e.g. the connection piece is curved.
  • angular shapes are possible.
  • the contact units 3a, 3b are preferably comprised of rollers with their axis of rotation parallel with the axis of the mandrel 2.
  • Each contact unit 3a, 3b can further comprise a plurality of coaxially arranged rollers.
  • FIG. 2 and Figure 3 illustrates a forming tool 3 with contact rollers 3a. 3b connected to a connection link 3c which is rotatably connected to a second connection link 4 at point A.
  • the second connection link 4 is rotatably connected to a third connection link 5 at point B.
  • the third connection link 5 is pivotally connected to a base 6 at a point D.
  • the contact rollers 3a, 3b are in contact with the surface of material 1 on a mandrel 2 with central axis at point C.
  • connection points A, B, D can be varied in order to supply different possible motions of the arrangement.
  • FIG. 3 A schematic of the movement of the points B and A relative to stationary points D and C is illustrated in Figure 3. Accordingly, point B follows a circular path with point D as the axis of rotation. Point A follows a substantially circular path with point C as the axis of rotation. It is evident that until both contact units 3a, 3b have brought the material 1 into contact with the mandrel 2, the point A follows a spiraling path which converges into the above described circular path.
  • the first connection link 3c is shaped such that only the contact rollers 3a, 3b are in contact with the material 1 on the mandrel 2. A suitable shape would be angular or curved with a radius of curvature no greater than the mandrel.
  • the contact units 3a, 3b are arranged such that the linear distance between their contact points with the material is equal to or smaller than the diameter of the mandrel 2.
  • connection link 4 is preferably curved to enable the arrangement to move freely without colliding with the mandrel 2 during operation.
  • the embodiment of Figure 4 further includes devices for enabling the various movements of the individual parts.
  • the arrangement optionally includes a breaking arrangement 8 for contacting the surface of the material and for limiting the speed of the incoming material 1 to maintain a set tension in the material 1.
  • the breaking arrangement 8 includes a roller 8 and an actuator unit 9 to enable bringing the breaking arrangement into and out of contact with the surface of the material.
  • the actuator unit 9 includes a pneumatic piston 9 connecting the breaking arrangement 8 and the third connection link 5.
  • other actuator units providing the same operation are possible, i.e. hydraulic pistons, other mechanical or electrical arrangements.
  • the embodiment of Figure 4 illustrates a pivoting arrangement 7 for enabling the pivoting motion of the third connection link 5.
  • the pivoting arrangement 7 includes a hydraulic piston connecting part of the third connection link 5 with the base 6.
  • other mechanical or electrical arrangements providing the same motion are possible to implement without departing from the invention.
  • connection link 5 is illustrated as a substantially straight arm; however, there are no limitations to the overall shape of the link 5. Depending on the application the link 5 can be curved or have some other shape.
  • the illustrated embodiment includes a third actuator unit 10 for enabling the forming tool 3 to rotate around as well as in coordination with the rotation of the axis of the mandrel 2.
  • the third actuator unit 10 for enabling the forming tool 3 to rotate around as well as in coordination with the rotation of the axis of the mandrel 2.
  • the third actuator unit 10 for enabling the forming tool 3 to rotate around as well as in coordination with the rotation of the axis of the mandrel 2.
  • the third actuator unit 10 for enabling the forming tool 3 to rotate around as well as in coordination with the rotation of the axis of the mandrel 2.
  • the third actuator unit 10 includes multiple pneumatic pistons 10 connecting the third connection link 5 and the forming tool 3.
  • the third actuator unit 10 comprises two pneumatic pistons.
  • the same motion of the forming tool 3 can be enabled with other mechanical or electrical arrangements.
  • Figure 5 illustrates a perspective view of the above-described embodiment, more clearly showing the interrelationship between the various details of the arrangement.
  • Figure 6 illustrates a specific embodiment of the invention and schematically how the connection points A, B can move relative the stationary points D, C.
  • a schematic of the operation of an arrangement according to the invention will be described with reference to Figures 7a-7c.
  • the arrangement is positioned in a starting position without contact with the material to be coiled.
  • the material has been fed forward until the end extends past the central axis of the mandrel.
  • the third connection link 5 is pivoted an angle relative a vertical direction in its starting position.
  • the actual magnitude of the angle is not limited to the illustrated; other angles are equally possible depending on the specific application.
  • Figure 7d illustrates the further pivoting movement of the third connection link 5 and the rotation of the forming tool 3.
  • the forming tool has formed the material around the mandrel and brought the material into contact with the mandrel. In doing so, the forming tool has rotated around the mandrel axis with a preset angle (not shown). Here, the forming tool and the mandrel have initiated their coordinated rotation to feed the material further around the mandrel. To prevent slipping, limiting speed of material and maintaining tension in material the breaking arrangement is optionally activated in Figure 7f. The roller of the breaking arrangement is brought into contact with the material.
  • Figures 7g and 7i Once the forming tool has reached a certain rotational angle around the mandrel axis, to ensure that the end of the material is secured between the incoming material and the mandrel, the forming tool is kept stationary. The mandrel is continuously rotated to wrap the material a predetermined number of laps around the mandrel. Thereby the contact rollers are in rolling contact with the material.
  • the stationary end position of the arrangement is, according to a specific embodiment, defined by a final preset angle of inclination relative the horizontal direction (or the vertical direction, or some other direction).
  • the angle is not restricted to the depicted angle.
  • the forming tool and the breaking arrangement are brought out of contact with the material and goes through the reverse motions to return to the starting position.
  • the width of the rollers of the forming tool and the steel sheet are equal i.e. maintaining contact along the entire width of the sheet.
  • the minimum allowed width difference can be different, i.e. a thin sheet is more prone to deform at the edges, thereby preventing efficient wrapping if the tool is too narrow, and vice versa for a thick sheet. This is also dependent on the actual stiffness of the material.
  • the invention is described as comprising pneumatic and hydraulic pistons, it is equally possible to use other mechanical or electrical contraptions to serve the same purpose. Other examples are gears, levers, springs etc.
  • Suitable materials for the outer surface of the mandrel and rollers are polyurethane, plastic, bakelite, steel. In addition, other materials are possible depending on the sensitivity and requirements of the sheet material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding Of Webs (AREA)
  • Replacement Of Web Rolls (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

La présente invention concerne un agencement pour enrouler une extrémité d’un matériau pouvant être bobiné (1) sur un mandrin (2), comprenant des moyens de formage (3), des premiers (3a) et des seconds (3b) moyens de contact étant reliés de façon tournante auxdits moyens de formage (3) et reliés de façon rigide entre eux par un premier moyen de connexion (3c). Lesdits moyens de contact (3a, 3b) sont conçus pour entrer en contact avec une surface dudit matériau (1), de sorte que le premier et le second moyens de contact (3a, 3b) amènent au moins une section du matériau (1) en contact avec une surface extérieure du mandrin (2). Lesdits moyens de formage (3) sont en outre conçus pour maintenir lesdits moyens de contact (3a, 3b) en contact avec la surface du matériau et pour tourner selon un angle prédéterminé autour de l’axe central du mandrin (2), pour enrouler l’extrémité du matériau (1) autour de la surface extérieure du mandrin (2).
EP06844043.7A 2006-01-18 2006-12-22 Procede et agencement d'emballage ameliore Not-in-force EP1979107B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0600120A SE529858C2 (sv) 2006-01-18 2006-01-18 Förfarande och anordning för förbättrad upplindning
PCT/SE2006/050623 WO2007084048A1 (fr) 2006-01-18 2006-12-22 Procede et agencement d’enroulage ameliore

Publications (3)

Publication Number Publication Date
EP1979107A1 true EP1979107A1 (fr) 2008-10-15
EP1979107A4 EP1979107A4 (fr) 2014-07-30
EP1979107B1 EP1979107B1 (fr) 2015-08-19

Family

ID=38287901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06844043.7A Not-in-force EP1979107B1 (fr) 2006-01-18 2006-12-22 Procede et agencement d'emballage ameliore

Country Status (3)

Country Link
EP (1) EP1979107B1 (fr)
SE (1) SE529858C2 (fr)
WO (1) WO2007084048A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841131A (en) * 1973-05-07 1974-10-15 Gulf & Western Mfg Co Wrapper roll and support assembly for a strip coiling machine
DE3026524A1 (de) * 1980-07-12 1982-02-11 Schloemann-Siemag AG, 4000 Düsseldorf Stellvorrichtung fuer die andrueckrollen und/oder umlenkschalen von bandhaspeln, insbesondere unterflurhaspeln
JPS57154318A (en) * 1981-03-20 1982-09-24 Nippon Steel Corp Down coiler
JPS57154315A (en) * 1981-03-20 1982-09-24 Nippon Steel Corp Down coiler having gap display device
JPS57154319A (en) * 1981-03-20 1982-09-24 Nippon Steel Corp Down coiler
US4761983A (en) 1987-08-07 1988-08-09 International Rolling Mill Consultants, Inc. Method and apparatus for winding material on a drum

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *
See also references of WO2007084048A1 *

Also Published As

Publication number Publication date
EP1979107B1 (fr) 2015-08-19
EP1979107A4 (fr) 2014-07-30
SE0600120L (sv) 2007-07-19
SE529858C2 (sv) 2007-12-11
WO2007084048A1 (fr) 2007-07-26

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