CN102921808A - Inner arc sheet pressing die for steel plate elbows with symmetrical weld seams - Google Patents
Inner arc sheet pressing die for steel plate elbows with symmetrical weld seams Download PDFInfo
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- CN102921808A CN102921808A CN2012104594762A CN201210459476A CN102921808A CN 102921808 A CN102921808 A CN 102921808A CN 2012104594762 A CN2012104594762 A CN 2012104594762A CN 201210459476 A CN201210459476 A CN 201210459476A CN 102921808 A CN102921808 A CN 102921808A
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- inner arc
- arc sheet
- steel plate
- sheet pressing
- pressing die
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to an inner arc sheet pressing die for steel plate elbows with symmetrical weld seams. The inner arc sheet pressing die comprises an upper die and a lower die, wherein a pressed notch is formed in the upper die. The inner arc sheet pressing die is characterized in that two L-shaped positioning gaps are respectively formed on the two sides of the pressed notch. The inner arc sheet pressing die has the advantage that inner arc sheets of which walls in the centers of inner arcs are thickest and the edges are thinnest can be pressed.
Description
Technical field
The present invention relates to a kind of inner arc sheet compacting tool set; Relate in particular to the inner arc sheet compacting tool set of a kind of symmetrical weld seam steel plate elbow processed.
Background technology
Elbow is pipe fitting, conduit coupling, is used for changing pipeline pumped (conveying) medium flow direction, and elbow can be divided into seamless and seamed by the raw materials difference, and seamless typically referring to the direct pushing of steel pipe (can be seamless pipe or ERW) or compacting forms; Seamed typically refer to steel plate be pressed into first the Hough of two symmetries, then butt welding forms, the position while welding of this elbow is that weld seam lays respectively at inner arc and outer arc side according to the standard of GB/T13401 " steel plate butt-welding pipe fitting processed ".Also has a kind of nonstandard seam elbow that has, its weld seam is symmetrically distributed in axis both sides, elbow flexural center, shaft centre line weld seam elbow adopts and is rolled into first two halfround bar slices that radius all equals the elbow radius, then calendering formation, wherein when compacting inner arc sheet, adopt for compacting tool set comprises upper die and lower die, have at patrix and to suppress a recess; The wall thickness of the inner arc sheet after this compacting tool set is compressing is basically identical, because elbow is the circulation medium corner, it is the weak link of whole pipeline, and the stress that stress is maximum, the outer arc side is born that elbow inner arc side is born is minimum, successively decrease successively in the centre, theoretically: elbow inner arc wall thickness should be maximum the wall thickness of axle central side (and greater than), the wall thickness of axle central side takes second place (should be identical with the thickness of steel pipe that is connected), and the outer arc wall thickness should be minimum the wall thickness of axle central side (and less than); In order to satisfy the requirement of inner arc wall thickness, just need to make elbow with the steel plate thicker than duct wall thus, cause unnecessary waste of material.
Summary of the invention
For above-mentioned shortcoming, the object of the present invention is to provide a kind of inner arc sheet compacting tool set that can suppress the symmetrical weld seam steel plate elbow processed of the inner arc sheet that inner arc center wall thickness is the thickest, the edge is the thinnest.
Technology contents of the present invention is: the inner arc sheet compacting tool set of a kind of symmetrical weld seam steel plate elbow processed, comprise upper die and lower die, and at patrix a compacting recess is arranged; It is characterized in that in compacting recess both sides a L shaped locating notch being arranged respectively.
The advantage that the present invention compared with prior art has: by the locating notch of patrix compacting recess both sides setting, be convenient to the location of halfround bar slice in mould, when the promotion patrix moves downward, oppositely roll halfround bar slice two straight flanges, at this moment the center of inner arc sheet (the namely inner arc side of elbow after the moulding) is not diastrophic, two straight flange place bending deformation quantities are maximum, so just formed moulding after inner arc center wall thickness the thickest, the effect that the edge is the thinnest.
Description of drawings
Fig. 1 is structural representation of the present invention.
Specific embodiment
As shown in Figure 1, the inner arc sheet compacting tool set of a kind of symmetrical weld seam steel plate elbow processed comprises patrix 1 and counterdie 2, at patrix 1 a compacting recess 1.1 is arranged; It is characterized in that in compacting recess 1.1 both sides a L shaped locating notch 1.2 being arranged respectively.
Claims (1)
1. the inner arc sheet compacting tool set of a symmetrical weld seam steel plate elbow processed comprises patrix (1) and counterdie (2), at patrix (1) a compacting recess (1.1) is arranged; It is characterized in that in compacting recess (1.1) both sides a L shaped locating notch (1.2) being arranged respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104594762A CN102921808A (en) | 2012-11-15 | 2012-11-15 | Inner arc sheet pressing die for steel plate elbows with symmetrical weld seams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104594762A CN102921808A (en) | 2012-11-15 | 2012-11-15 | Inner arc sheet pressing die for steel plate elbows with symmetrical weld seams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102921808A true CN102921808A (en) | 2013-02-13 |
Family
ID=47636813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104594762A Pending CN102921808A (en) | 2012-11-15 | 2012-11-15 | Inner arc sheet pressing die for steel plate elbows with symmetrical weld seams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102921808A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202061A (en) * | 2019-07-18 | 2019-09-06 | 燕山大学 | A kind of outer arc list weld-seam bend cold punching mold and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4027519A (en) * | 1976-09-22 | 1977-06-07 | Thomas & Betts Corporation | Means and method for reducing the perimeter of a hollow thin walled member |
| CN1353024A (en) * | 2000-11-08 | 2002-06-12 | 金云龙 | Elbow with symmetric welded seams made of steel plate by butt weld and its manufacture technology |
| CN1464217A (en) * | 2002-06-12 | 2003-12-31 | 高文兴 | Process for manufacturing steel sheet made butt-welded single seam pulling bend |
| CN201776353U (en) * | 2010-07-30 | 2011-03-30 | 安徽梅地亚茶业有限责任公司 | Sheet iron arc-edge forming die |
| CN202377323U (en) * | 2011-12-09 | 2012-08-15 | 上海宝冶工程技术有限公司 | Simple U-shaped steel member molding machine |
| CN202910184U (en) * | 2012-11-15 | 2013-05-01 | 江阴中南重工股份有限公司 | Inner arc sheet pressing die for steel plate elbows with symmetrical weld seams |
-
2012
- 2012-11-15 CN CN2012104594762A patent/CN102921808A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4027519A (en) * | 1976-09-22 | 1977-06-07 | Thomas & Betts Corporation | Means and method for reducing the perimeter of a hollow thin walled member |
| CN1353024A (en) * | 2000-11-08 | 2002-06-12 | 金云龙 | Elbow with symmetric welded seams made of steel plate by butt weld and its manufacture technology |
| CN1464217A (en) * | 2002-06-12 | 2003-12-31 | 高文兴 | Process for manufacturing steel sheet made butt-welded single seam pulling bend |
| CN201776353U (en) * | 2010-07-30 | 2011-03-30 | 安徽梅地亚茶业有限责任公司 | Sheet iron arc-edge forming die |
| CN202377323U (en) * | 2011-12-09 | 2012-08-15 | 上海宝冶工程技术有限公司 | Simple U-shaped steel member molding machine |
| CN202910184U (en) * | 2012-11-15 | 2013-05-01 | 江阴中南重工股份有限公司 | Inner arc sheet pressing die for steel plate elbows with symmetrical weld seams |
Non-Patent Citations (1)
| Title |
|---|
| 傅成昌: "《冲压技术问答》", 30 June 1979, article "冲压技术问答", pages: 117-118 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202061A (en) * | 2019-07-18 | 2019-09-06 | 燕山大学 | A kind of outer arc list weld-seam bend cold punching mold and method |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |