CN105834267B - Roll forming apparatus and roll forming method - Google Patents
Roll forming apparatus and roll forming method Download PDFInfo
- Publication number
- CN105834267B CN105834267B CN201610073253.0A CN201610073253A CN105834267B CN 105834267 B CN105834267 B CN 105834267B CN 201610073253 A CN201610073253 A CN 201610073253A CN 105834267 B CN105834267 B CN 105834267B
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- Prior art keywords
- sheet
- roll forming
- roll
- assembly
- advancing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/12—Edge-curling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
There is provided a roll forming apparatus for forming a curl at a longitudinal end of a sheet material having an arcuate side surface, the roll forming apparatus comprising: a support portion for supporting the arcuate sheet; a roll forming roll assembly; and an advancement mechanism that rotates the sheet through the roll forming assembly and advances the sheet longitudinally into the roll forming assembly while leaving a prescribed degree of longitudinal play to prevent wrinkles. The invention also provides a rolling forming method.
Description
Technical Field
the invention relates to a rolling forming device and a rolling forming method. More particularly, but not exclusively, the invention relates to a roll-forming method for forming a curl at the end of a bent metal sheet or metal can.
background
Conventional roll forming methods for forming a curl at the end of a metal can involve rotating a roll forming apparatus relative to the end of the can in a continuous forming process. Little or no longitudinal play is provided and the metal tube is continuously fed into the roll forming assembly. This can force the metal can into the roll-forming apparatus to create an arcuate wave, resulting in crimp.
It is an object of the present invention to provide a roll-forming apparatus and method which overcomes this problem or at least to provide the public with a useful choice.
Disclosure of Invention
According to an exemplary embodiment, there is provided a method of roll forming a longitudinal end portion of a sheet having an arcuate side surface to form a curl at one end, the method comprising the steps of:
a. Feeding a longitudinal end of the sheet into a roll forming assembly; and
b. the sheet is advanced longitudinally into the roll forming assembly while leaving a specified degree of longitudinal play to prevent buckling, and is rotated through the roll forming assembly.
According to another exemplary embodiment, there is provided a method of roll forming an end portion of a sheet material having an arcuate sheet shape to form a curl at one end of the sheet material, the method comprising the steps of:
a. Feeding a longitudinal end of the sheet into a roll forming assembly;
b. advancing the sheet material longitudinally into the roll forming assembly and not advancing the sheet material longitudinally into the roll forming assembly are performed alternately while rotating the sheet material through the roll forming assembly.
According to another exemplary embodiment, there is provided a roll forming apparatus for forming a curl at a longitudinal end of a laterally arcuate sheet, the roll forming apparatus comprising:
a. a support portion for supporting the arc-shaped sheet;
b. a roll forming roll assembly; and
c. An advancement mechanism that rotates the sheet through the roll forming assembly and advances the sheet longitudinally into the roll forming assembly while leaving a specified degree of longitudinal play to prevent wrinkling.
According to another exemplary embodiment, there is provided a roll forming apparatus for forming a curl at a longitudinal end of a laterally arcuate sheet, the roll forming apparatus comprising:
a. A support portion for supporting the arc-shaped sheet;
b. a roll forming roll assembly; and
c. An advancement mechanism that alternately performs both advancing the sheet material longitudinally into the roll forming assembly and not advancing the sheet material longitudinally into the roll forming assembly while rotating the sheet material through the roll forming assembly.
It is acknowledged that the terms 'comprise', 'comprises' and 'comprising' may, under varying jurisdictions, be attributed with either an exclusive or an inclusive meaning. For the purposes of this specification, and unless otherwise stated, these terms are intended to have an inclusive meaning-i.e., that the terms are intended to include the listed components which are directly referenced and may also include other components or elements not specifically named.
The reference to any prior art in this specification is not an admission that such prior art forms part of the common general knowledge.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with a general description of the invention given above, and the detailed description of the exemplary embodiments given below, serve to explain the principles of the invention.
FIG. 1 illustrates how a bead is formed at the end of a metal can;
FIG. 2 illustrates a cross-sectional view of the roll forming assembly shown in FIG. 1; and
Fig. 3 shows a perspective view of the roll forming assembly shown in fig. 1.
Detailed Description
referring to fig. 1, a roll forming apparatus for forming a curl at an end of a metal can 1 is shown. In the present example, the metal cylinder has a diameter between 100mm and 2000mm and a sheet thickness between 0.2mm and 4 mm. Although the invention is described in relation to the formation of a can, it will be appreciated that the invention is applicable to the formation of a curl at the longitudinal ends of a sheet of material which is not formed into the side of a can to be arcuate.
the roll forming apparatus comprises a support in the form of rolls 2 and 3, the rolls 2 and 3 supporting the metal can 1 and allowing the metal can 1 to rotate about its axis. The advancement mechanism 4 is shown in a schematic manner and includes a conical end portion that engages the interior of the metal can 1 to center the metal can 1, advance the metal can 1 (arrow a) and rotate the metal can 1 through the roll forming assembly 5 (arrow B). As can be seen in fig. 2 and 3, the roll forming roll assembly includes a pair of rolls 6 and 7 into which a metal can is progressively fed as it rotates.
it has been found that allowing a specified degree of longitudinal play (in the direction of arrow a) while advancing the sheet longitudinally into the roll-forming assembly helps to reduce or eliminate wrinkles. It has been found effective to leave a longitudinal play of about 0.5 mm.
It has further been found that operating the advancing mechanism 4 to alternately advance the metal sheet 1 longitudinally into the roll forming assembly 5 and not advance the metal sheet 1 longitudinally into the roll forming assembly during the entire continuous rotation of the drum also helps to reduce or eliminate wrinkles. Preferably, multiple forward and no forward steps are employed. It has been found that advancing the metal sheet 1 in the longitudinal direction in the order of about 7mm, 0mm, 2mm, 0mm, 1mm, 0mm per revolution produces a well formed bead without wrinkles.
According to an aspect of the present invention, there is provided a method of roll forming a longitudinal end portion of a sheet having an arcuate side surface to form a curl at one end portion, the method comprising the steps of:
a. Feeding the longitudinal end of the sheet into a roll forming assembly; and
b. Advancing the sheet longitudinally into the roll forming assembly while leaving a specified degree of longitudinal play to prevent buckling, and rotating the sheet through the roll forming assembly.
Preferably, the longitudinal play is about 0.5 mm.
Preferably, the method comprises alternately advancing the sheet longitudinally into the roll forming assembly and not advancing the sheet longitudinally into the roll forming assembly while rotating the sheet through the roll forming assembly.
Preferably, the method comprises a plurality of advancing and non-advancing steps.
Preferably, the sheets advance in a sequence of about 7mm, 0mm, 2mm, 0mm, 1mm, 0mm per revolution.
Preferably, the roll-forming assembly comprises a pair of opposed rolls.
Preferably, the sheet material is in the form of a cartridge.
preferably, the cartridge has a diameter of between 100mm and 2000 mm.
preferably, the sheet has a thickness of between 0.2mm and 4 mm.
According to still another aspect of the present invention, there is provided a method of roll forming an end portion of a sheet having an arc-shaped side surface to form a curl at the end portion of the sheet, the method comprising the steps of:
a. Feeding the longitudinal ends of the sheet into a roll forming assembly;
b. Advancing the sheet longitudinally into the roll forming assembly and not advancing the sheet longitudinally into the roll forming assembly are performed alternately while rotating the sheet through the roll forming assembly.
Preferably, the method comprises a plurality of advancing and non-advancing steps.
Preferably, the sheets advance in a sequence of about 7mm, 0mm, 2mm, 0mm, 1mm, 0mm per revolution.
Preferably, the method comprises: advancing the sheet longitudinally into the roll forming assembly while leaving a specified degree of longitudinal play to prevent buckling, and rotating the sheet through the roll forming assembly.
Preferably, the longitudinal play is about 0.5 mm.
Preferably, the roll-forming assembly comprises a pair of opposed rolls.
preferably, the sheet material is in the form of a cartridge.
preferably, the cartridge has a diameter of between 100mm and 2000 mm.
Preferably, the sheet has a thickness of between 0.2mm and 4 mm.
according to a further aspect of the present invention, there is provided a roll forming apparatus for forming a curl at a longitudinal end of a sheet material having an arcuate side surface, the roll forming apparatus comprising:
a. The supporting part is used for supporting the sheet with the arc-shaped side surface;
b. A roll forming roll assembly; and
c. an advancement mechanism that rotates the sheet through the roll forming assembly and advances the sheet longitudinally into the roll forming assembly while leaving a prescribed degree of longitudinal play to prevent buckling.
Preferably, the longitudinal play is about 0.5 mm.
preferably, the advancing mechanism alternately advances the sheet longitudinally into the roll forming assembly and does not advance the sheet longitudinally into the roll forming assembly while rotating the sheet through the roll forming assembly.
Preferably, the advancing mechanism advances the sheet through a plurality of advancing and non-advancing steps.
Preferably, the advancing mechanism advances the sheet material in a sequence of about 7mm, 0mm, 2mm, 0mm, 1mm, 0mm per revolution.
Preferably, the roll-forming assembly comprises a pair of opposed rolls.
According to a further aspect of the present invention, there is provided a roll forming apparatus for forming a curl at a longitudinal end of a sheet material having an arcuate side surface, the roll forming apparatus comprising:
a. The supporting part is used for supporting the sheet with the arc-shaped side surface;
b. A roll forming roll assembly; and
c. An advancement mechanism that alternately advances the sheet longitudinally into the roll forming assembly and does not advance the sheet longitudinally into the roll forming assembly while rotating the sheet through the roll forming assembly.
preferably, the advancing mechanism cycles through a plurality of advancing and non-advancing steps.
Preferably, the sheets advance in a sequence of about 7mm, 0mm, 2mm, 0mm, 1mm, 0mm per revolution.
Preferably, the roll forming apparatus includes an advancement mechanism that rotates the sheet through the roll forming assembly and advances the sheet longitudinally into the roll forming assembly while leaving a prescribed degree of longitudinal play to prevent buckling.
Preferably, the longitudinal play is about 0.5 mm.
preferably, the roll-forming assembly comprises a pair of opposed rolls.
while the present invention has been illustrated by the description of embodiments thereof, and while the embodiments have been described in detail, it is not the intention of the applicants to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications will readily appear to those skilled in the art. The invention in its broader aspects is therefore not limited to the specific details, representative apparatus and method, and illustrative example shown and described. Accordingly, departures may be made from such details without departing from the spirit or scope of the applicant's general inventive concept.
Claims (16)
1. a method of roll forming a longitudinal end portion of a sheet having an arcuate side surface to form a curl at the end portion, the method comprising the steps of:
a. Feeding the longitudinal end of the sheet into a roll forming assembly; and
b. advancing the sheet longitudinally into the roll forming roll assembly while leaving a specified degree of longitudinal play to prevent wrinkling and rotating the sheet through the roll forming roll assembly, wherein the longitudinal play is 0.5 mm.
2. The method of claim 1, comprising alternately advancing the sheet longitudinally into the roll forming roll assembly and not advancing the sheet longitudinally into the roll forming roll assembly while rotating the sheet through the roll forming roll assembly.
3. The method of claim 2, comprising a plurality of advancing and non-advancing steps.
4. A method according to claim 3, wherein the sheet is advanced in a sequence of 7mm, 0mm, 2mm, 0mm, 1mm, 0mm per revolution.
5. The method of claim 1, wherein the roll forming roll assembly comprises a pair of opposed rolls.
6. The method of claim 1, wherein the sheet is in the form of a cartridge.
7. The method of claim 6, wherein the cartridge has a diameter of between 100mm and 2000 mm.
8. The method of claim 1, wherein the sheet has a thickness between 0.2mm and 4 mm.
9. A method of roll forming an end portion of a sheet having an arcuate side surface to form a curl at the end portion of the sheet, the method comprising the steps of:
a. feeding the longitudinal ends of the sheet into a roll forming assembly;
b. Alternately advancing the sheet material longitudinally into the roll forming roll assembly and not advancing the sheet material longitudinally into the roll forming roll assembly while rotating the sheet material through the roll forming roll assembly.
10. the method of claim 9, comprising a plurality of advancing and non-advancing steps.
11. The method of claim 10, wherein the sheet is advanced in a sequence of 7mm, 0mm, 2mm, 0mm, 1mm, 0mm per revolution.
12. The method according to any one of claims 9 to 11, the method comprising: advancing the sheet longitudinally into the roll forming roll assembly while leaving a specified degree of longitudinal play to prevent wrinkling and rotating the sheet through the roll forming roll assembly, wherein the longitudinal play is 0.5 mm.
13. the method of claim 9, wherein the roll forming roll assembly comprises a pair of opposed rolls.
14. The method of claim 9, wherein the sheet is in the form of a cartridge.
15. The method of claim 14, wherein the cartridge has a diameter of between 100mm and 2000 mm.
16. The method of claim 9, wherein the sheet has a thickness between 0.2mm and 4 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NZ70432315 | 2015-02-02 | ||
| NZ704323 | 2015-02-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105834267A CN105834267A (en) | 2016-08-10 |
| CN105834267B true CN105834267B (en) | 2019-12-06 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610073253.0A Active CN105834267B (en) | 2015-02-02 | 2016-02-02 | Roll forming apparatus and roll forming method |
| CN201620105747.8U Active CN205599731U (en) | 2015-02-02 | 2016-02-02 | Rolling forming equipment |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620105747.8U Active CN205599731U (en) | 2015-02-02 | 2016-02-02 | Rolling forming equipment |
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| Country | Link |
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| CN (2) | CN105834267B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834267B (en) * | 2015-02-02 | 2019-12-06 | 斯科特科技有限公司 | Roll forming apparatus and roll forming method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59163029A (en) * | 1983-03-07 | 1984-09-14 | Daiwa Can Co Ltd | Flange forming head of thin walled metallic cylinder |
| CN1100012A (en) * | 1993-05-07 | 1995-03-15 | 克鲁伯有限公司 | Apparatus for rolling winding edge |
| CN1812664A (en) * | 2005-01-28 | 2006-08-02 | 宝星电子株式会社 | Rotary curling system and rotary curling method |
| CN201711408U (en) * | 2010-07-12 | 2011-01-19 | 西蒙电气（中国）有限公司 | Automatic head spinning machine |
| CN102189164A (en) * | 2011-05-17 | 2011-09-21 | 南京奥联汽车电子电器有限公司 | Special-shaped curling mechanism |
| KR101471027B1 (en) * | 2014-05-28 | 2014-12-09 | (주)글로벌 로보틱스 | Curl and rope hemming roller |
| CN205599731U (en) * | 2015-02-02 | 2016-09-28 | 斯科特科技有限公司 | Rolling forming equipment |
-
2016
- 2016-02-02 CN CN201610073253.0A patent/CN105834267B/en active Active
- 2016-02-02 CN CN201620105747.8U patent/CN205599731U/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59163029A (en) * | 1983-03-07 | 1984-09-14 | Daiwa Can Co Ltd | Flange forming head of thin walled metallic cylinder |
| CN1100012A (en) * | 1993-05-07 | 1995-03-15 | 克鲁伯有限公司 | Apparatus for rolling winding edge |
| CN1812664A (en) * | 2005-01-28 | 2006-08-02 | 宝星电子株式会社 | Rotary curling system and rotary curling method |
| CN201711408U (en) * | 2010-07-12 | 2011-01-19 | 西蒙电气（中国）有限公司 | Automatic head spinning machine |
| CN102189164A (en) * | 2011-05-17 | 2011-09-21 | 南京奥联汽车电子电器有限公司 | Special-shaped curling mechanism |
| KR101471027B1 (en) * | 2014-05-28 | 2014-12-09 | (주)글로벌 로보틱스 | Curl and rope hemming roller |
| CN205599731U (en) * | 2015-02-02 | 2016-09-28 | 斯科特科技有限公司 | Rolling forming equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN205599731U (en) | 2016-09-28 |
| CN105834267A (en) | 2016-08-10 |
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