CN204486495U - A kind of variable cross-section screw-type extrusion mould - Google Patents
A kind of variable cross-section screw-type extrusion mould Download PDFInfo
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- CN204486495U CN204486495U CN201520075843.8U CN201520075843U CN204486495U CN 204486495 U CN204486495 U CN 204486495U CN 201520075843 U CN201520075843 U CN 201520075843U CN 204486495 U CN204486495 U CN 204486495U
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Abstract
The utility model discloses a kind of variable cross-section screw-type extrusion mould, base plate is fixedly connected with die shoe, punch is connected with below upper bolster, described die shoe is provided with inner chamber, and above inner chamber, upper molded plate is housed, the inner chamber of die shoe is provided with die block, Baltimore groove is provided with in die block, in Baltimore groove, housing-case is installed, the centre of housing-case is provided with square through hole, in square through hole, core rod is installed, core rod is made up of the core lobe that pintongs is corresponding, helix groove is provided with in core lobe, helix groove adopts variable cross-section design, conventional extrusion dies and large plasticity are squeezed twisting die tool be complex as a whole.The utility model is built-in one section of helical duct in conventional extrusion dies die cavity, makes material produce crowded shear plasticity of turning round when extruding simultaneously and is out of shape, thus increase crimp effect; Meanwhile, core rod in die adopts the core lobe that pintongs is corresponding to form, manufacture processing simple and easy, change conveniently, interchangeability is strong.
Description
Technical field
The utility model relates to a kind of ram pressing mould, particularly relates to a kind of variable cross-section screw-type extrusion mould.
Background technology
Extruding is pressurizeed to the blank be placed in die with drift or punch, makes it the die cavity changed by cross section, thus produce Plastic Flow, obtain the forging method corresponding to the nibs of mould or the product of concave-convex mold shape.Crimp feature is that the size when large and small cross section is determined, extrusion ratio has just immobilized by the distortion of heavy in section to small bore.Increase the plastic deformation efficiency of extrusion die, just must increase extrusion ratio, but for the mould of some material or certain material, its extrusion ratio can not expand arbitrarily, so its squeezing effect just can only be fixed.And squeeze turn round ((Twist Extrusion, be called for short TE)) be a kind of metal sever plastic shaping new technique and the technique of the invention nineties in 20th century.A helical duct (mainly comprising: changeable helical angle, the crowded parameter such as torsional angle, passage length) is had in the die cavity of its crowded twisting die tool; During extruding, under punch effect, when plastic material (comprising metal, body of powder etc.) is pressed into this helical duct, just can produce large plasticity detrusion, repeating to squeeze and turn round through multi-pass, accumulates very large plastic deformation, thus crystal grain thinning, improves material property.Use for reference thus large plasticity squeeze turn round die feature, helical duct is placed in traditional extrusion die profile, just can under the prerequisite not changing extrusion ratio, when making material by extrusion die cavity, both traditional plastic extruding deformation had been produced, produce lateral shear plastic deformation (torsion) again, thus increase material by plastic forming ability during die cavity, so change squeezing effect.
Utility model content
The purpose of this utility model is to provide a kind of variable cross-section screw-type extrusion mould, built-in one section of helical duct in conventional extrusion dies die cavity, makes material produce crowded shear plasticity of turning round when extruding simultaneously and is out of shape, thus increase crimp effect.
A kind of variable cross-section screw-type extrusion mould, comprise base plate, die shoe, upper bolster, described base plate is fixedly connected with die shoe, be connected with punch below upper bolster, it is characterized in that: described die shoe is provided with inner chamber, and above inner chamber, upper molded plate is housed, one die block is installed among the extrusion die inner chamber of die shoe, be provided with Baltimore groove in die block, be provided with housing-case in Baltimore groove, housing-case is fixed by the bolt of die block both sides; The centre of housing-case is provided with square through hole, and be provided with variable cross-section spiral core rod in square through hole, punch is corresponding with the center of variable cross-section spiral core rod.
A kind of variable cross-section screw-type extrusion mould, it is characterized in that, the built-in segments combined die block of described Extruding die die cavity, built-in variable cross-section spiral core rod is made up of the core lobe that pintongs is corresponding, be provided with in core lobe and adopt variable cross-section helix groove, conventional extrusion dies and large plasticity are squeezed twisting die tool and is complex as a whole.
The utility model has the advantage of: under the extrusion ratio prerequisite not changing conventional extrusion dies, by embedded built-in one section of helical duct, make conventional extruded and large plasticity squeeze to turn round to be complex as a whole.When material is by extrusion die cavity, both produced traditional plastic extruding deformation, and produced lateral shear plastic deformation again, thus increase material by plastic forming ability during die cavity, so change squeezing effect.In addition, be difficult to machined for variable cross-section helical duct and the most easily occur the feature of breaking, adopting the box-like design of lobe, be divided into pintongs by even for variable cross-section helical duct one.Load in housing-case after split, then housing-case assembly is inlaid in die, and use Bolt to position.Manufacture processing simple and easy, change conveniently, interchangeability is strong, especially helical duct be easier to manufacture, change convenient.Meanwhile, if need the parameter changing helical duct, only need change the outfit and change helical angle, squeeze the box-like helical duct assembly of the lobe of torsional angle and passage length, and mould bases and die main body need not be changed, and realize one module multiple usages, economical and practical.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model variable cross-section screw-type extrusion mould concave modular structure schematic diagram;
Fig. 3 is the utility model variable cross-section screw-type extrusion mould concave module assembly structural representation;
Fig. 4 is housing-case and variable cross-section spiral core rod combining structure schematic diagram in the utility model variable cross-section screw-type extrusion mould;
Fig. 5 be in Fig. 4 A to schematic diagram;
In figure: 1. die block, 2. bolt, 3. housing-case, 4. variable cross-section spiral core rod, 41. core lobes, 411. variable cross-section helix groove, 10. punch, 11. upper bolsters, 12. upper molded plates, 13. die shoes, 14. base plates.
Detailed description of the invention
Now be described with reference to the accompanying drawings the embodiment of the utility model structure:
A kind of variable cross-section screw-type extrusion mould, comprise base plate 14, die shoe 13 and upper bolster 11, described base plate 14 is fixedly connected with die shoe 13, is connected with punch 10, it is characterized in that below upper bolster 11, described die shoe 13 is provided with inner chamber, and upper molded plate 12 is housed above inner chamber, the inner chamber of die shoe is provided with die block 1, is provided with Baltimore groove in die block 1, be provided with housing-case 3 in Baltimore groove, housing-case 3 is fixed by the bolt 2 of die block 1 both sides; The centre of housing-case 3 is provided with square through hole, variable cross-section spiral core rod 4 is installed in square through hole, punch 10 is corresponding with the center of variable cross-section spiral core rod 4, and described variable cross-section spiral core rod 4 is made up of the core lobe 41 that pintongs is corresponding, and is provided with variable cross-section helix groove 411 in core lobe 41.
The utility model designs the Helical Mode cored structure of variable cross-section helical duct entirety by Three-dimensional Design Software, more evenly cutting variable cross-section spiral core rod 4 is pintongs.Design a housing-case 3, determine the core rod matching relationship of the box-like variable cross-section helical duct with lobe.First pintongs variable cross-section spiral core rod 4 is press-fited and enter in housing-case 3, then housing-case 3 assembly is embedded in the left and right mould of die block 1, the periphery of variable cross-section spiral core rod 4 is also dropped in the Baltimore groove of die block 1, and locate fixing housing-case 3 assembly by bolt 2.Finally assemble the miscellaneous part of mould bases, when upper molded plate 12 and die shoe 13 are combined, compress the periphery of die block 1.Be connected with punch 10 below upper bolster 11, and with the center Corresponding matching of variable cross-section spiral core rod 4.Obtain having removable, the lobe easily that changes the outfit and close embedded variable cross-section screw-type extrusion mould.
The utility model adopts the core rod of variable cross-section screw-type extrusion mould, its pintongs is little with the core lobe 41 difficulty of processing coefficient of variable cross-section helix groove 411, positional stations is little, and shape is just the same, there is interchangeability and programming repeatability, efficiency is high, and whole processing needs about 4 working days (32 man-hour).
When the utility model uses, as occurred, variable cross-section helical duct is damaged, then only need to change a damaged lobe core lobe 41, and housing-case 3 and die block 1 all do not need to change, and greatly save material; The utility model also can change the structural parameters (as helical angle, squeezing torsional angle and passage length etc.) of variable cross-section spiral core rod 4 simultaneously.By the core lobe 41 of the fFour piece type variable cross-section spiral core rod 4 that changes the outfit, just can change the plastic deformation effect of this extrusion die, grain refining effect, make one module multiple usages.Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; make some equivalent alternative or obvious modification without departing from the concept of the premise utility; and performance or purposes identical, then should be considered as belonging to the protection domain that claims that the utility model submits to are determined.
Claims (2)
1. a variable cross-section screw-type extrusion mould, comprise base plate (14), die shoe (13), upper bolster (11), described base plate (14) is fixedly connected with die shoe (13), punch (10) is connected with below upper bolster (11), it is characterized in that: described die shoe (13) is provided with inner chamber, and upper molded plate (12) is housed above inner chamber, one die block (1) is installed among the extrusion die inner chamber of die shoe, Baltimore groove is provided with in die block, housing-case (3) is installed in Baltimore groove, housing-case (3) is fixed by the bolt (2) of die block (1) both sides, the centre of housing-case (3) is provided with square through hole, is provided with variable cross-section spiral core rod (4) in square through hole, and punch (10) is corresponding with the center of variable cross-section spiral core rod (4).
2. variable cross-section screw-type extrusion mould according to claim 1, it is characterized in that, the built-in segments combined die block (1) of described Extruding die die cavity, built-in variable cross-section spiral core rod (4) is made up of the core lobe (41) that pintongs is corresponding, be provided with in core lobe (41) and adopt variable cross-section helix groove (411), conventional extrusion dies and large plasticity are squeezed twisting die tool and is complex as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520075843.8U CN204486495U (en) | 2015-02-04 | 2015-02-04 | A kind of variable cross-section screw-type extrusion mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520075843.8U CN204486495U (en) | 2015-02-04 | 2015-02-04 | A kind of variable cross-section screw-type extrusion mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204486495U true CN204486495U (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520075843.8U Expired - Fee Related CN204486495U (en) | 2015-02-04 | 2015-02-04 | A kind of variable cross-section screw-type extrusion mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204486495U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114653770A (en) * | 2022-03-28 | 2022-06-24 | 太原科技大学 | Spiral reducing-continuous twisting extrusion die for magnesium alloy high-performance plate |
-
2015
- 2015-02-04 CN CN201520075843.8U patent/CN204486495U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114653770A (en) * | 2022-03-28 | 2022-06-24 | 太原科技大学 | Spiral reducing-continuous twisting extrusion die for magnesium alloy high-performance plate |
| CN114653770B (en) * | 2022-03-28 | 2024-02-13 | 太原科技大学 | Spiral reducing-continuous torsion extrusion die for magnesium alloy high-performance plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20160204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |