CN105312360A - Pipe expanding die - Google Patents
Pipe expanding die Download PDFInfo
- Publication number
- CN105312360A CN105312360A CN201510871571.7A CN201510871571A CN105312360A CN 105312360 A CN105312360 A CN 105312360A CN 201510871571 A CN201510871571 A CN 201510871571A CN 105312360 A CN105312360 A CN 105312360A
- Authority
- CN
- China
- Prior art keywords
- expand tube
- tube
- tube mould
- rectangular tube
- mould
- 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.)
- Pending
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Classifications
-
- 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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention relates to a pipe expanding die. The body of the pipe expanding die is cubic and comprises an expanding zone of which the cross section is rectangular, and an inlet zone, wherein the inlet zone is in the flaring type. According to the technical scheme disclosed by the invention, the pipe expanding die is driven by a driving device to penetrate through a rectangular pipe which is stretched, so that inner concave parts and sunk parts in the rectangular pipe can be leveled up. The pipe expanding die is simple in structure and convenient to use.
Description
Technical field
The present invention relates to a kind of expand tube mould.
Background technology
Aluminum rectangular tube is generally by technological formings such as machined, extruding or stretchings.But machined and extruding all exist a lot of shortcoming, such as, the borings amount of process for machining is large, and metal waste is serious, and production efficiency is low, and can only the shorter rectangular tube of processing length.The rectangular tube that extrusion process is produced, its appearance and size low precision, and the large gauge rectangular tube that wall thickness thicker (>=15mm) can only be processed, and owing to there being seam to stitch, therefore tubing bearing capacity is not enough.Although drawing process can overcome the deficiency of machined and extrusion process existence, stretch in producing, due to the inhomogeneities of metal flow, after often stretching, rectangular tube there will be indent phenomenon, and longer wide-edge is middle there will be the phenomenon of subsiding inward.
Summary of the invention
The object of the present invention is to provide the simple expand tube mould of a kind of structure, in order to the rectangular tube after smooth stretching.
The object of the present invention is achieved like this, a kind of expand tube mould, and its body is cube, and comprise zone of swelling and entrance band that cross section is rectangle, entrance band is flaring type.The expand tube mould of the technical program passes the rectangular tube after stretching under the driving of drive unit, can by the indent on rectangular tube, leveling of subsiding, and structure is simple, easy to use.
In order to when ensureing to flatten the precision of rear rectangular tube and consider to stretch, the elasticity of rectangular tube is recovered, the length of above-mentioned zone of swelling and the wide length slightly larger than rectangular tube finished product and wide.
In order to not scratch rectangular tube inner surface, the limit of above-mentioned body outer surface and the junction on limit are arc.
For the ease of operating and not affecting expand tube effect, the center of above-mentioned body is provided with the connecting hole be connected with drive rod.
In order to easy to connect, establish screw thread in above-mentioned connecting hole, drive rod and body are threaded connection.
In order to structure is simple and firm, above-mentioned connecting hole is through hole.
The present invention has following beneficial effect:
1, expand tube mould of the present invention can by the indent on rectangular tube, leveling of subsiding through the rectangular tube after stretching under the driving of drive unit, and structure is simple, easy to use.
2, expand tube mould of the present invention is applicable to thin-walled rectangular tube, and the rectangular tube dimensional accuracy after leveling is high.
Accompanying drawing explanation
Fig. 1 is expand tube mould structure schematic diagram of the present invention;
Fig. 2 carries out expand tube schematic diagram with expand tube mould in the embodiment of the present invention.
In figure, 1. rectangular tube, 2, body, 2-1. zone of swelling, 2-2. entrance band, 3. connecting hole.
Detailed description of the invention
Embodiment, a kind of expand tube mould, body 2 is cube, and comprise zone of swelling 2-1 and entrance band 2-2, entrance band 2-2 is flaring type.This expand tube mould is used for the rectangular tube 1 after smooth stretching.
The length of zone of swelling 2-1 and the wide length slightly larger than rectangular tube 1 finished product and wide.
The limit of body 2 outer surface and the junction on limit are arc.
Body 2 be provided with the connecting hole 3 be connected with drive rod.
Establish screw thread in connecting hole 3, drive rod and body 2 are threaded connection.
Connecting hole 3 is through hole, also can be blind hole.
In the present embodiment, body 2 is hollow.Body 2 also can be solid.
In the present embodiment, rectangular tube 1 is aluminum rectangular tube, and its production technology is: circular tube blank → woollen annealing → transition stretching → form drawing → tension straingtening → expand tube → tension straingtening → be cut into product, sampling → packaging, warehouse-in.
In the present embodiment, finished product is large gauge rectangle thin wall pipe, i.e. diagonal line length >=the 200mm of rectangular tube, wall thickness≤10mm, length-width ratio >=2 of rectangular tube.Such as: 230 × 100 × 6,240 × 100 × 5,285 × 100 × 6 equal-specification rectangular tubes.
Transition is stretched as and circular tube blank is stretched as elliptical tube, and elliptical tube is stretched as rectangular tube 1 by shaping being stretched as.
Drawing process needs to use corresponding mould, and mould comprises stage die, finishing die and expand tube mould of the present invention.Finishing die ensures the appearance and size precision of rectangular tube.
Under additional pulling force effect, force metal circular tube woollen to be stretched as elliptical tube by the hole crossing plating mould, then obtain rectangular tube 1 by the hole of finishing die.Stretch in producing, due to the inhomogeneities of metal flow, rectangular tube 1 after stretching just there will be indent phenomenon, collapse phenomenon is inward there will be in the middle of longer wide-edge, interior concave defect can be eliminated by expand tube mould of the present invention, realize leveling, the appearance and size precision of the rectangular tube 1 after leveling is high (comprising plane clearance, perpendicularity, flexibility, concentricity etc.), and wall thickness is thin and even.
Claims (8)
1. an expand tube mould, is characterized in that: its body (2) is cube, and comprise zone of swelling (2-1) and entrance band (2-2) that cross section is rectangle, described entrance band (2-2) is flaring type.
2. expand tube mould as claimed in claim 1, is characterized in that: the size of described zone of swelling (2-1) is slightly larger than the size of rectangular tube (1) finished product.
3. expand tube mould as claimed in claim 1 or 2, is characterized in that: the limit of described body (2) outer surface and the junction on limit are arc.
4. expand tube mould as claimed in claim 1 or 2, is characterized in that: described body (2) is provided with the connecting hole (3) be connected with drive rod.
5. expand tube mould as claimed in claim 3, is characterized in that: described body (2) is provided with the connecting hole (3) be connected with drive rod.
6. expand tube mould as claimed in claim 4, it is characterized in that: described connecting hole establishes screw thread in (3), described body (2) is connected with drive rod by screw thread.
7. expand tube mould as claimed in claim 5, it is characterized in that: described connecting hole establishes screw thread in (3), described body (2) is connected with drive rod by screw thread.
8. expand tube mould as claimed in claim 5, is characterized in that: described connecting hole (3) is through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510871571.7A CN105312360A (en) | 2015-12-02 | 2015-12-02 | Pipe expanding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510871571.7A CN105312360A (en) | 2015-12-02 | 2015-12-02 | Pipe expanding die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105312360A true CN105312360A (en) | 2016-02-10 |
Family
ID=55241250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510871571.7A Pending CN105312360A (en) | 2015-12-02 | 2015-12-02 | Pipe expanding die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105312360A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2107572C1 (en) * | 1996-08-20 | 1998-03-27 | Самарский государственный аэрокосмический университет им.С.П.Королева | Process of anchoring of tubes in tube grates |
| US6532785B1 (en) * | 2001-11-20 | 2003-03-18 | General Motors Corporation | Method and apparatus for prefilling and hydroforming parts |
| CN1883844A (en) * | 2006-06-28 | 2006-12-27 | 余启佳 | Integrated desk-top type tube expander |
| CN200963793Y (en) * | 2006-09-22 | 2007-10-24 | 江苏兴利来特钢有限公司 | Expander for pipe |
| CN201052535Y (en) * | 2007-04-30 | 2008-04-30 | 张家港市合丰机械制造有限公司 | Expasion pipe mold |
| CN101754822A (en) * | 2007-05-04 | 2010-06-23 | 活力恐龙有限公司 | The apparatus and method that are used for expanding tubular elements |
| CN202762871U (en) * | 2012-02-15 | 2013-03-06 | 衡阳鸿大特种钢管有限公司 | Quickly dismounted heat pipe expanding core head die |
| CN205217660U (en) * | 2015-12-02 | 2016-05-11 | 重庆西重特种铝业有限公司 | Expansion tube mould |
-
2015
- 2015-12-02 CN CN201510871571.7A patent/CN105312360A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2107572C1 (en) * | 1996-08-20 | 1998-03-27 | Самарский государственный аэрокосмический университет им.С.П.Королева | Process of anchoring of tubes in tube grates |
| US6532785B1 (en) * | 2001-11-20 | 2003-03-18 | General Motors Corporation | Method and apparatus for prefilling and hydroforming parts |
| CN1883844A (en) * | 2006-06-28 | 2006-12-27 | 余启佳 | Integrated desk-top type tube expander |
| CN200963793Y (en) * | 2006-09-22 | 2007-10-24 | 江苏兴利来特钢有限公司 | Expander for pipe |
| CN201052535Y (en) * | 2007-04-30 | 2008-04-30 | 张家港市合丰机械制造有限公司 | Expasion pipe mold |
| CN101754822A (en) * | 2007-05-04 | 2010-06-23 | 活力恐龙有限公司 | The apparatus and method that are used for expanding tubular elements |
| CN202762871U (en) * | 2012-02-15 | 2013-03-06 | 衡阳鸿大特种钢管有限公司 | Quickly dismounted heat pipe expanding core head die |
| CN205217660U (en) * | 2015-12-02 | 2016-05-11 | 重庆西重特种铝业有限公司 | Expansion tube mould |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160210 |
|
| RJ01 | Rejection of invention patent application after publication |