CN104741405A - Hot extrusion die with improved lower die choke flow structure - Google Patents
Hot extrusion die with improved lower die choke flow structure Download PDFInfo
- Publication number
- CN104741405A CN104741405A CN201310750539.4A CN201310750539A CN104741405A CN 104741405 A CN104741405 A CN 104741405A CN 201310750539 A CN201310750539 A CN 201310750539A CN 104741405 A CN104741405 A CN 104741405A
- Authority
- CN
- China
- Prior art keywords
- counterdie
- die
- bonding container
- patrix
- hole
- 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
- 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
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a hot extrusion die with an improved lower die choke flow structure. The hot extrusion die comprises an upper die and a lower die, which can be superposed and connected together back and forth, wherein a flow guide plate is arranged at a feeding end of the upper die; a plurality of bridge sites are arranged on the flow guide plate; tap holes are formed among the bridge sites; a core head is arranged at a discharge end of the upper die; a welding chamber, a molding hole and a discharge hole, which are communicated with one another, are sequentially formed in the lower die from the feeding end to the discharge end; the welding chamber is communicated with the tap hole of the upper mold; the core head of the upper mold is inserted into a molding hole of the lower mold; and a circle of spiral structure of which the axial height is gradually reduced is arranged on the bottom surface of the welding chamber of the lower mold. Welding lines on the surface of the product which is molded from the material disclosed by the invention by the molding hole are slight or even disappear; the slight welding lines also extend in a spiral curve manner; the hot extrusion die is high in overall strength, and is not easily fractured or damaged when being subjected to bending, cold drawing and stretching; and the product is high in surface accuracy and small in dimension error.
Description
Technical field
The present invention relates to a kind of extrusion die, the hot-extrusion mold of particularly a kind of counterdie reducing-flow structure improvement.
Background technology
Various product moulding is all realized by hot-extrusion mold, general hot-extrusion mold is made up of upper die and lower die, patrix is provided with deflector and core print, deflector is provided with bridge location, material enters in mould after the tap hole between each bridge location is shunted, then bonding container is flowed into, enter conflux after bonding container, and then enter carry out in the molding space that formed by core print and forming hole extruded, finally discharge from discharge opening, bonding container bottom surface common is at present all annular plane structure, material enters bonding container along tap hole, material enters in forming hole shaping in bonding container after conflux, but due to bonding container bottom surface be plane, then material amount of flow in bonding container is little, material in each tap hole is difficult to good seam, shaping product surface will produce linear pattern seam line along its length, so just have impact on the intensity of product, in use easily there is cracking damage in product.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides the hot-extrusion mold that a kind of counterdie reducing-flow structure improves, the hot extruding die lamps structure that this counterdie reducing-flow structure improves is simple, and material forms eddy flow in bonding container, on product, seam line slightly even disappears, and improves intensity and the surface accuracy of product.
The present invention in order to the technical scheme solving its technical problem and adopt is: the hot-extrusion mold that a kind of counterdie reducing-flow structure improves, comprise and can superpose the upper die and lower die linked together in front and back, patrix feed end is provided with deflector, deflector is provided with some bridge locations, tap hole is formed between each bridge location, the discharge end of patrix is provided with core print, counterdie is provided with the bonding container of connection successively to discharge end from feed end, forming hole and discharge opening, described bonding container is communicated with the tap hole of patrix, the core print of patrix is inserted in the forming hole of counterdie, described counterdie bonding container bottom surface is provided with the helical structure that a circle axial height reduces gradually.
As a further improvement on the present invention, described helical structure is circle retaining wall bonding container bottom surface being surrounded on forming hole, and this retaining wall along counterdie axial height direction twist.
As a further improvement on the present invention, described helical structure is whole bonding container bottom surface.
As a further improvement on the present invention, the seamed edge of described bridge location is equipped with fillet.
The invention has the beneficial effects as follows: the spiral-shaped structure that the bonding container floor design of counterdie becomes axial height to reduce gradually by the present invention, material is after tap hole enters bonding container, eddy flow can be formed in bonding container, make the abundant seam of material flowed in each tap hole in bonding container, the product surface seam line of material after forming hole is shaping slightly even disappears, slight seam line also helically the mode of curve extend, its bulk strength is high, bending, cold-drawn and stretching time not easily cracking damage, and product surface precision is high, scale error is little.
Accompanying drawing explanation
Fig. 1 is structural principle front view of the present invention;
Fig. 2 is structural principle top view of the present invention;
Fig. 3 be in Fig. 2 bonding container from A place to the deployed condition schematic diagram at B place.
Detailed description of the invention
Embodiment: the hot-extrusion mold that a kind of counterdie reducing-flow structure improves, comprise and can superpose the patrix 1 and counterdie 2 that link together in front and back, patrix 1 feed end is provided with deflector, deflector is provided with some bridge locations 3, tap hole 4 is formed between each bridge location, the discharge end of patrix 1 is provided with core print 5, counterdie 2 is provided with the bonding container 6 of connection successively to discharge end from feed end, forming hole 7 and discharge opening 8, described bonding container 6 is communicated with the tap hole 4 of patrix 1, the core print 5 of patrix 1 is inserted in the forming hole 7 of counterdie 2, described counterdie 2 bonding container 6 bottom surface is provided with the helical structure that a circle axial height reduces gradually, by bonding container 6 inner bottom surface arranges helical structure, the material entered in bonding container 6 from tap hole 4 is made to produce High Rotation Speed, material is fully merged in bonding container 6, seam seam is even eliminated in maximum reduction, even if there is slight seam seam, its also helically distributions on product length, guarantee product strength is high, product surface quality is good, Product processing error is little.
Described helical structure is circle retaining wall bonding container 6 bottom surface being surrounded on forming hole 7, this retaining wall along counterdie 2 axial height direction twist, flow in the passage of material between back-up ring and bonding container 6 bottom surface, cover stop portion simultaneously and flow into forming hole 7, and the material flowed in forming hole 7 is still in rotational flow state, can at utmost reduce so even to eliminate seam seam.
Described helical structure is whole bonding container 6 bottom surface, after material enters bonding container 6, flows into forming hole 7 and carry out shaping after the helical structure fast rotational of bonding container 6 bottom surface, ensures that material fully merges in bonding container 6.
The seamed edge of described bridge location is equipped with fillet.
Claims (4)
1. the hot-extrusion mold of a counterdie reducing-flow structure improvement, comprise and can superpose the patrix (1) and counterdie (2) that link together in front and back, patrix (1) feed end is provided with deflector, deflector is provided with some bridge locations (3), tap hole (4) is formed between each bridge location, the discharge end of patrix (1) is provided with core print (5), counterdie (2) is provided with the bonding container (6) of connection successively to discharge end from feed end, forming hole (7) and discharge opening (8), described bonding container (6) is communicated with the tap hole (4) of patrix (1), the core print (5) of patrix (1) is inserted in the forming hole (7) of counterdie (2), it is characterized in that: described counterdie (2) bonding container (6) bottom surface is provided with the helical structure that a circle axial height reduces gradually.
2. the hot-extrusion mold of counterdie reducing-flow structure improvement according to claim 1, it is characterized in that: described helical structure is circle retaining wall bonding container (6) bottom surface being surrounded on forming hole (7), and this retaining wall along counterdie (2) axial height direction twist.
3. the hot-extrusion mold of counterdie reducing-flow structure improvement according to claim 1, is characterized in that: described helical structure is whole bonding container (6) bottom surface.
4. the hot-extrusion mold of counterdie reducing-flow structure improvement according to claim 1, is characterized in that: the seamed edge of described bridge location is equipped with fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750539.4A CN104741405A (en) | 2013-12-31 | 2013-12-31 | Hot extrusion die with improved lower die choke flow structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750539.4A CN104741405A (en) | 2013-12-31 | 2013-12-31 | Hot extrusion die with improved lower die choke flow structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104741405A true CN104741405A (en) | 2015-07-01 |
Family
ID=53581985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310750539.4A Pending CN104741405A (en) | 2013-12-31 | 2013-12-31 | Hot extrusion die with improved lower die choke flow structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104741405A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108127000A (en) * | 2017-12-22 | 2018-06-08 | 福建省南平铝业股份有限公司 | A kind of thin-wall circular tube extrusion die |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2071543A (en) * | 1980-03-19 | 1981-09-23 | Erbsloeh Gmbh & Co | Extrusion Die |
| GB2286354B (en) * | 1994-01-28 | 1997-05-14 | Alcan Int Ltd | Extrusion dies |
| CN101357376A (en) * | 2008-09-01 | 2009-02-04 | 江阴市江顺模具有限公司 | Novel aluminum circular tube sector diffuence-hole spiral bridge hot-extrusion mold |
| CN203044558U (en) * | 2012-11-28 | 2013-07-10 | 昆山捷安特轻合金科技有限公司 | Extrusion die with improved structure |
| CN203751018U (en) * | 2013-12-31 | 2014-08-06 | 昆山捷安特轻合金科技有限公司 | Hot extrusion die with improved flow choking structure of lower die |
-
2013
- 2013-12-31 CN CN201310750539.4A patent/CN104741405A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2071543A (en) * | 1980-03-19 | 1981-09-23 | Erbsloeh Gmbh & Co | Extrusion Die |
| GB2286354B (en) * | 1994-01-28 | 1997-05-14 | Alcan Int Ltd | Extrusion dies |
| CN101357376A (en) * | 2008-09-01 | 2009-02-04 | 江阴市江顺模具有限公司 | Novel aluminum circular tube sector diffuence-hole spiral bridge hot-extrusion mold |
| CN203044558U (en) * | 2012-11-28 | 2013-07-10 | 昆山捷安特轻合金科技有限公司 | Extrusion die with improved structure |
| CN203751018U (en) * | 2013-12-31 | 2014-08-06 | 昆山捷安特轻合金科技有限公司 | Hot extrusion die with improved flow choking structure of lower die |
Non-Patent Citations (1)
| Title |
|---|
| 张美玉: ""铝合金圆管表面焊合线的解决方法"", 《轻合金加工技术》, no. 2, 28 February 2010 (2010-02-28) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108127000A (en) * | 2017-12-22 | 2018-06-08 | 福建省南平铝业股份有限公司 | A kind of thin-wall circular tube extrusion die |
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| 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: 20150701 |
|
| RJ01 | Rejection of invention patent application after publication |