CN103273186B - Working device for extruding miniature thin-wall multi-hole flat pipes by using multiple-step tower-shaped fishtail type core rod - Google Patents
Working device for extruding miniature thin-wall multi-hole flat pipes by using multiple-step tower-shaped fishtail type core rod Download PDFInfo
- Publication number
- CN103273186B CN103273186B CN201310227836.0A CN201310227836A CN103273186B CN 103273186 B CN103273186 B CN 103273186B CN 201310227836 A CN201310227836 A CN 201310227836A CN 103273186 B CN103273186 B CN 103273186B
- Authority
- CN
- China
- Prior art keywords
- plug
- rank
- core rod
- design
- raw materials
- 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.)
- Expired - Fee Related
Links
Abstract
The invention provides a working device for extruding miniature thin-wall multi-hole flat pipes by using a multiple-step tower-shaped fishtail type core rod. A design mode of a tower-shaped fishtail type core rod is applied to a divergent die extrusion process of the miniature ultrathin-wall aluminum alloy flat pipes, the design is considered from the perspectives of increase of the contact area of metal in a welding-on region and improvement of welding-on possibility, and the overall dimension of the core rod is modified. The design idea facilitates the area of a material preparation region before welding-on through change of a series of cross-section shapes and design of a multiple-step cross-section transition region, the step number and the minimum critical dimension of the core rod can be designed for the divergent die extrusion of the miniature pipes according to the demands for different section bar cross sections and supporting strength of the core rods made from different materials, and an application range of the design idea of the core rod is not limited in section bars with certain shapes and is greatly widen in the production and application field of relevant aluminum alloy products. The dead-zone forming problem in a traditional process is also solved through selection of cross-section shapes in the design, and the design reasonability is further improved. The working device for extruding the miniature thin-wall multi-hole flat pipes by using the multiple-step tower-shaped fishtail type core rod has wide application prospect.
Description
(1) technical field
The present invention relates to the technology of micro ultrathin wall flat tube material hot extrusion, for the Design of Dies of hot extrusion molding divergent die.
(2) background technology
Along with the generally application of bridge die extrusion technology in tubing is produced, the demand of producing the miniature tubing such as aluminium alloy and copper alloy is also raised gradually.The problem of difficulty filled by the stream existed in the method for designing of conventional shunt mould bonding container, and insufficient seam difficult problem caused filled by the stream particularly for the miniature muscle of porous tubing and seam place of lateral wall.Prior art SMIS rod shape and size designing is paid close attention to sizing and is extruded the stage, do not consider that the profile of plug increases after weldering and band extrude phase change with sizing get the raw materials ready region thus improve the phenomenon of metal filled difficulty, soluble scheme is not proposed for weldering and difficult material.
(3) summary of the invention
The present invention seeks to solve existing mold and there is the problems such as stream filling seam that is difficult and that cause because stream is insufficient is difficult, a kind of equipment of thin-walled porous flat pipe material of multistage turriform fishtail type plug is provided.This device designs the geomery of related die structure on the basis of original technique, for metal seam prerequisite is for large Material Staging Area, the basis of complete seam realizes the sizing of tubing and extrudes.
The equipment of the thin-walled porous flat pipe material of multistage turriform fishtail type plug provided by the invention, comprise die sleeve, support ring, seam mould, flow-guilding mold and divergent die is placed successively in the installing hole of die sleeve, plug is arranged in flow-guilding mold, the top of die sleeve is fixed with recipient, dummy block and extrusion axis is disposed with in recipient, described plug is multistage turriform fishtail type plug, this plug is designed to multiple-rank arrangement, concrete exponent number is according to the intensity of plug, rigidity, stability requirement and production equipment need to determine; This plug is characterised in that and provides large Material Staging Area by the multistage reducing of section, first rank of plug are by supercharging band of getting the raw materials ready, diversion belt and calibrating strap three subregion composition, supercharging band overall physical dimensions of getting the raw materials ready is less than calibrating strap, and centre is transitioned into calibrating strap by diversion belt; Follow-up every rank form by get the raw materials ready supercharging band and diversion belt, and the supercharging band of getting the raw materials ready of every rank plug is all less than the size of its diversion belt.
On the basis of above mentality of designing, because infinite multistage mandrel structure is difficult to accurately describe by diagram, the present invention devises plug and has three rank turriform fishtail type mandrel structures.And then set forth the mentality of designing of this invention.
Each rank are got the raw materials ready excessive by diversion belt between supercharging band, and the excursion taking the plug cross section, each rank of the supercharging band of getting the raw materials ready on last rank from the sizing of the final shaping to is followed successively by: rectangle, square, inscribed square, necking down inscribed square, inner ellipse shape and necking down inner ellipse shape.
Described each rank diversion belt is 1:10 ~ 1:20 with the length ratio of supercharging band of getting the raw materials ready.Each rank supercharging band of getting the raw materials ready can formulate every rank length according to section bar size and changes of section.Getting the raw materials ready in each rank of plug, equal to realize stream even for the length of supercharging band, and seam is abundant.
The tapering on the first rank of described plug is 20 degree of-30 degree, and follow-up every rank plug reducing tapering is 45 degree.Forming process
Metal stock, under plus load, experiences divergent die, flow-guilding mold, after entering bonding container, under the internal pressure effect of mold cavity, flow into the supercharging band of getting the raw materials ready between plug, for seam provides large contact area and hydrostatic pressure, fully after contact, under the effect of pressurized, realize seam.Metal flow is convenient in the design of diversion belt, and the pressure loading of the metal pair plug that tube reducing is out of shape meets the critical load value of plug.The length of calibrating strap need consider dwell pressure and reduce the effect being beneficial to and extruding that rubs, and determines this length.
The advantage of this design:
1. certain at plug length, under the prerequisite that the final shaping size is certain, add the number of times that sectional dimension reduces, under the prerequisite that mandrel material intensity meets the demands, the area of section of plug can be reduced.
2. the length of different cross section transition region (diversion belt) can adjust at random according to the needs of bonding container and Material Staging Area size.
3. the geometric ways of changes of section has Mutiple Choice, on the basis meeting certain processing prerequisite, and can Material Staging Area size designed, designed required for extrusion process.
4. the minimizing in plug cross section, finally can make Material Staging Area and seam district strengthen.The contact area of shunting blank is provided for realizing seam.
5. the best innovative point of the design of the program is that square section (2-2) inwardly connects the transition of square section (3-3), be convenient to shunting metal between the upper and lower two side inflow plugs of plug, the method for designing of 45 degree avoids the formation that traditional handicraft extrudes dead band.And the design of follow-up inner ellipse is also have followed this design principle.
6., under the design concept of plug cross section reduction, coordinate fish tail type taper transitions sizing plug design.The taper design pattern of this plug not only increases the static pressure needed for metal seam, it also avoid plug streamline excessive the brought metal swirl of change and turbulent phenomenon.
7. the unlimited minimizing (increase of turriform exponent number) of cross sectional shape forms the turriform Design Mode of this design, turriform design is combined with variable cross section, adds the flexibility of process application.
(4) accompanying drawing explanation
Accompanying drawing 1 is tongue type bridge die extrusion mould schematic diagram.
In accompanying drawing: 1 extrusion axis 2 dummy block 3 recipient 4 pin 5 divergent die 6 flow-guilding mold 7 seam mould 8 bonding container 9 plug 10 support ring 11 die sleeve 12 ingot blank 13 screw.
Accompanying drawing 2 is 1 rank plug rigging position schematic diagram.
In accompanying drawing: 14 Material Staging Areas, 15 diversion belts, 16 get the raw materials ready supercharging band.
Accompanying drawing 3 is bonding container plug position view.
In accompanying drawing: 9 plug 17 Material Staging Areas.
Accompanying drawing 4 is single plug schematic diagram.
In accompanying drawing: I-I, II-II, III-III, IV-IV, V-V, VI-VI is respectively sectional position.
Accompanying drawing 5 single plug changes of section schematic diagram.
In accompanying drawing: I-I, II-II, III-III, IV-IV, V-V, VI-VI is respectively cross sectional shape.
(5) detailed description of the invention
Embodiment 1:
One. mould structure
As shown in Figure 1, the equipment of the thin-walled porous flat pipe material of multistage turriform fishtail type plug provided by the invention, comprises the moulding section of mould, standing part, pressures partially.
Moulding section comprises: divergent die 5, flow-guilding mold 6, seam mould 7, plug 9.
Standing part comprises: pin 4, recipient 3, support ring 10, die sleeve 11 screw 13
Pressures partially comprises: extrusion axis 1, dummy block 2.
The concrete structure of this mould is, support ring 10 is placed successively in the installing hole of die sleeve 11, seam mould 7, flow-guilding mold 6, with divergent die 5, plug 9 is arranged in flow-guilding mold 6, the top of die sleeve is fixed with recipient 3 by pin 4 and screw 13, being placed with dummy block 2 in recipient successively with the plug described in extrusion axis 1. is multistage turriform fishtail type plug (see Fig. 2 to Fig. 5), this plug by the first rank by supercharging band of getting the raw materials ready, diversion belt, calibrating strap three subregion composition (see Fig. 2), supercharging band overall physical dimensions of getting the raw materials ready is less than calibrating strap, centre is transitioned into calibrating strap by diversion belt.If plug exponent number increases, follow-up plug forms (see Fig. 3) by get the raw materials ready supercharging band and diversion belt.
Two. the mentality of designing of mould
The present invention is directed to extrusion die on the shaping basis of thin-walled porous flat pipe material, solve existing mold and there is the problems such as stream filling seam that is difficult and that cause because stream is insufficient is difficult, a kind of equipment of thin-walled porous flat pipe material of multistage turriform fishtail type plug is provided.This device designs the geomery of related die structure on the basis of original technique, for metal seam prerequisite is for large Material Staging Area, the basis of complete seam realizes the sizing of tubing and extrudes.
Accompanying drawing 1 is the mould structure of this technical process.For the extrusion process of micro ultrathin wall flat tube material, be still difficult to realize in the seam process of seam regional metal after importing.In accompanying drawing 1, plug is fixed on flow-guilding mold 6, and metal flows into seam district, the bond ribbons around plug realizes seam process.So the size of plug be formed as determining that metal realizes the key factor of seam in seam district outward.
Especially for the extrusion process of micro ultrathin wall flat tube material, because wall thickness is excessively thin, under the pressure that metal provides at mold cavity and plus load, the seam region flowed between plug is more difficult, so, the contact area shunting metal when increasing the distance between plug and then increase seam, contributes to realizing seam process.Under the fixed form of plug and mandril strength meet the prerequisite of ultimate load, we can reduce the sectional area of plug, and then increase the spacing of plug.And on the basis of the new cross sectional shape formed, extend the axial length in this cross section, thus form larger seam district.
Based on above principle, accompanying drawing 2 is the basic schematic diagram of 1 rank plug mentality of designing, is made up of three subregions, is supercharging band of getting the raw materials ready respectively, diversion belt, calibrating strap.Supercharging band overall physical dimensions of getting the raw materials ready is less than calibrating strap, is transitioned into calibrating strap by diversion belt, and Material Staging Area increases the contact area of shunting metal seam, the hydrostatic pressure in this region is raised, serves the effect of supercharging of getting the raw materials ready.After metal flows through above-mentioned zone, because plug size becomes large gradually, the metal flow in stock ground is deformed into master with tube reducing herein, and simultaneously due to the effect of plug friction, hydrostatic pressure continues to raise.After plug continues to stay above-mentioned zone, enter sizing region, the overall dimension of this regional metal equals the size of required section bar, and metal flow is through this region, and hydrostatic pressure slowly raises, for the stock ground after the free end that metal is extruded provides large hydrostatic pressure.For follow-up seam of extruding metal provides necessary condition.This figure object is the effect that get the raw materials ready supercharging band and diversion belt are described by single order mandrel structure, for designing the mentality of designing that multistage plug provides basic.
Based on above principle, accompanying drawing 3 is multistage plug distribution map, and the schematic diagram due to Infinite Order plug is difficult to use graphic technique accurate expression, 3 rank mandrel structures are devised in accompanying drawing 3, as shown in Figure 3, after plug sectional area narrows, every root plug both sides all can form larger seam district.If metal does not realize seam after entering bonding container herein immediately, also can form a large amount of Material Staging Area herein, along with plug lateral cross-sectional dimension strengthens, the spacing of plug reduces gradually, and the interior pressure of metal flow increases.Also seam can be formed.
First rank tapering of described plug is changed to 20 degree ~ 30 degree, and follow-up every rank tapering is 45 degree
Plug zero draft region with have the axial length of flare area than determining according to the length of mould bonding container and the size at seam angle.
Accompanying drawing 4 is the structure chart of single 3 rank plugs in accompanying drawing 3.
Accompanying drawing 5 is the cross sectional shape figure of accompanying drawing 4 plug.Cross sectional shape in accompanying drawing 5 is corresponding one by one with position, accompanying drawing 4 middle section respectively.Be transitioned into plug root section IV-IV gradually by the final shaping cross section I-I, the change in shape flow process of plug is:
Rectangle → square → inscribed square → necking down inscribed square → inner ellipse → necking down inner ellipse
Three. forming process
The present embodiment medium section wall thickness 0.25mm ~ 0.35mm, extrusion temperature 4400C ~ 4600C, extrusion ratio 13, extrusion speed 1mm/s, hydraulic press permanent load 1000000N-1500000N, blank is cylindrical, massive blank, Material selec-tion 6063 line aluminium alloy.
For the extrusion process of micro ultrathin wall flat tube material divergent die, metal experienced by shunting respectively, imports, seam, extrusion molding four-stage.Metal stock (ingot blank 12) is under plus load, experience divergent die, flow-guilding mold, after entering bonding container 8, under the internal pressure effect of mold cavity, flow into the Material Staging Area between plug, for seam provides large contact area and hydrostatic pressure, after abundant contact, under the effect of multidirectional pressurized, realize seam.
Form is press-fited respectively by support ring 10 by adopting, seam mould 7, flow-guilding mold 6, once be pressed in die sleeve 11, plug 9 is pressed into flow-guilding mold 6, divergent die 5 is positioned on flow-guilding mold 6, by recipient 3 with die sleeve 11 with pin 4, screw 13 is connected, extrusion axis 1 makes it be out of shape when equipment provides plus load to ingot blank 12 pressurization, and deformable metal successively flows through divergent die 5 and flow-guilding mold 6 through shunting, when seam mould 7, flow into seam district (Material Staging Area), mold cavity provide larger in pressure, realize seam extrusion.
The tubing prepared of this example is without tearing phenomenon, section configuration when extruding, and size meets required precision, and intensity meets the demands, and mechanical property is better.
Claims (4)
1. the equipment of the thin-walled porous flat pipe material hot extrusion shunting mould of a multistage turriform fishtail type plug, comprise die sleeve, support ring is placed successively in the installing hole of die sleeve, seam mould, flow-guilding mold, divergent die, plug is fixed in flow-guilding mold to press-fit form, the top of die sleeve is fixed with recipient, is disposed with dummy block and extrusion axis in recipient, and described plug is multistage turriform fishtail type plug, this plug is designed to multiple-rank arrangement, concrete exponent number according to the intensity of plug, rigidity, stability requirement and production equipment need to determine; First rank of plug are by supercharging band of getting the raw materials ready, and diversion belt and calibrating strap three subregion form, and supercharging band overall physical dimensions of getting the raw materials ready is less than calibrating strap, and centre is transitioned into calibrating strap by diversion belt; Follow-up every rank form by get the raw materials ready supercharging band and diversion belt, and the supercharging band of getting the raw materials ready of every rank plug is all less than the size of its diversion belt; It is characterized in that the Material Staging Area that described plug includes multistage plug reducing and formed respectively; Based on multistage principle, devise 3 rank mandrel structures, be provided with transitional region between 3 Material Staging Area, rank plug every rank, the supercharging band of getting the raw materials ready that the cross section of Material Staging Area, every rank and transitional region takes last rank to by the sizing on the first rank is followed successively by: rectangle, square, inscribed square, necking down inscribed square, inner ellipse shape and necking down inner ellipse shape.
2. the equipment of the thin-walled porous flat pipe material hot extrusion shunting mould of multistage turriform fishtail type plug according to claim 1, is characterized in that described each rank diversion belt is 1:10-1:20 with the length ratio of supercharging band of getting the raw materials ready.
3. the equipment of the thin-walled porous flat pipe material hot extrusion shunting mould of multistage turriform fishtail type plug according to claim 2, is characterized in that the length of described Material Staging Area, each rank is equal.
4. the equipment of the thin-walled porous flat pipe material hot extrusion shunting mould of the multistage turriform fishtail type plug according to any one of claims 1 to 3, it is characterized in that for tapering needed for plug described in the first rank plug be 20 degree of-30 degree, follow-up every rank plug tapering selects 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310227836.0A CN103273186B (en) | 2013-06-08 | 2013-06-08 | Working device for extruding miniature thin-wall multi-hole flat pipes by using multiple-step tower-shaped fishtail type core rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310227836.0A CN103273186B (en) | 2013-06-08 | 2013-06-08 | Working device for extruding miniature thin-wall multi-hole flat pipes by using multiple-step tower-shaped fishtail type core rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103273186A CN103273186A (en) | 2013-09-04 |
| CN103273186B true CN103273186B (en) | 2015-04-15 |
Family
ID=49055864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310227836.0A Expired - Fee Related CN103273186B (en) | 2013-06-08 | 2013-06-08 | Working device for extruding miniature thin-wall multi-hole flat pipes by using multiple-step tower-shaped fishtail type core rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103273186B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706660B (en) * | 2013-12-20 | 2016-07-13 | 广铝集团有限公司 | A kind of Extrusion Process of Aluminum Alloy Profile die sleeve |
| CN103962406B (en) * | 2014-05-05 | 2016-06-29 | 天津理工大学 | A kind of divergent die shaping pipe squeezes swollen assembling die |
| CN105149375B (en) * | 2015-09-23 | 2017-09-29 | 江苏大学 | A kind of booster-type multichannel tubing divergent die combination mold core |
| CN107377653A (en) * | 2017-09-22 | 2017-11-24 | 南昌航空大学 | The flat prod cast of extruding metal |
| CN107570546B (en) * | 2017-10-18 | 2023-05-02 | 山东大学 | Multifunctional extrusion die structure and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2638213A (en) * | 1948-10-14 | 1953-05-12 | Dalton H Clark | Extrusion die for tubing |
| CN201064794Y (en) * | 2007-07-03 | 2008-05-28 | 江阴市江顺模具有限公司 | Concentrated type multi-mold-core refrigeration pipe hot extrusion mold |
| US7412864B2 (en) * | 2006-05-09 | 2008-08-19 | Alliance Metal Forming, Llc | Method of forming trailer receiver |
| CN102226486A (en) * | 2011-06-22 | 2011-10-26 | 天津理工大学 | CuAl bimetallic composite pipe and die extrusion molding method thereof |
| CN102921754A (en) * | 2012-11-14 | 2013-02-13 | 广东伟业铝厂有限公司 | Producing method of aluminum alloy seamless stage variable section pipe and preparation device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166468C (en) * | 2000-09-12 | 2004-09-15 | 郭丽仪 | Technology and die' set for manufacturing seamless Al-alloy tube |
-
2013
- 2013-06-08 CN CN201310227836.0A patent/CN103273186B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2638213A (en) * | 1948-10-14 | 1953-05-12 | Dalton H Clark | Extrusion die for tubing |
| US7412864B2 (en) * | 2006-05-09 | 2008-08-19 | Alliance Metal Forming, Llc | Method of forming trailer receiver |
| CN201064794Y (en) * | 2007-07-03 | 2008-05-28 | 江阴市江顺模具有限公司 | Concentrated type multi-mold-core refrigeration pipe hot extrusion mold |
| CN102226486A (en) * | 2011-06-22 | 2011-10-26 | 天津理工大学 | CuAl bimetallic composite pipe and die extrusion molding method thereof |
| CN102921754A (en) * | 2012-11-14 | 2013-02-13 | 广东伟业铝厂有限公司 | Producing method of aluminum alloy seamless stage variable section pipe and preparation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103273186A (en) | 2013-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103273186B (en) | Working device for extruding miniature thin-wall multi-hole flat pipes by using multiple-step tower-shaped fishtail type core rod | |
| CN103480682B (en) | A kind of rank irregular section modularization extrusion molding apparatus and method | |
| CN102151709A (en) | Method for differentially extruding and forming pipe fittings arbitrarily bent on plane by adopting double convex dies | |
| CN103537509A (en) | Large-sized multi-nozzle pipe hot extrusion forming process formulation and mold design method | |
| CN201143522Y (en) | Hot-extrusion mold | |
| CN103191950B (en) | Method for extrusion forming of section-variable hollow member | |
| CN102527763A (en) | Construction and design method of asymmetric product extrusion die of high-strength aluminum alloy | |
| CN115351109A (en) | Magnesium alloy extrusion die and extrusion method | |
| CN202984324U (en) | Thick-wall hollow aluminum profile extrusion die of mold core belt flow blocking table | |
| CN103286151B (en) | Preparation device and method for manufacturing inside and/or outside thickened aluminum alloy pipes with variable cross sections | |
| CN203400951U (en) | Ultra-wide aluminum alloy board extruding mold | |
| CN108787777A (en) | A kind of band hinders the aluminum alloy heat extrusion die at angle | |
| CN207086585U (en) | A kind of integral type drawing mould of secondary reducing aluminium-alloy pipe | |
| CN201684852U (en) | Radial pressure applying reducing die of flexible metal tube | |
| CN204338600U (en) | Conical pipe cold-extrusion shaping device | |
| CN207288418U (en) | A kind of extrusion die of color-changing lamp aluminium alloy heat radiator | |
| CN104353688B (en) | Be applicable to the spill pressurizing unit of non-ferrous metal | |
| CN203635656U (en) | T-shaped copper extrusion mold | |
| CN208680191U (en) | A kind of band hinders the aluminum alloy heat extrusion die at angle | |
| CN204208916U (en) | Be applicable to the spill pressurizing unit of non-ferrous metal | |
| CN202241917U (en) | Micro-pipe mould | |
| CN209476961U (en) | Magnesium alloy extrusion mold | |
| CN207343470U (en) | Multistage bonding container extrusion die | |
| CN107808064A (en) | The Optimization Design of the short route extrusion forming process of blast-furnace tuyere front end cap body | |
| CN104636535B (en) | A kind of hollow blank backward extrusion technology optimum design method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20160608 |