CN219966023U - Profile extrusion die with multistage welding chamber structure - Google Patents
Profile extrusion die with multistage welding chamber structure Download PDFInfo
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- CN219966023U CN219966023U CN202320482265.4U CN202320482265U CN219966023U CN 219966023 U CN219966023 U CN 219966023U CN 202320482265 U CN202320482265 U CN 202320482265U CN 219966023 U CN219966023 U CN 219966023U
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- welding chamber
- mould
- upper die
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- 238000003466 welding Methods 0.000 title claims abstract description 80
- 238000001125 extrusion Methods 0.000 title claims abstract description 37
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Extrusion Of Metal (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a section extrusion die with a multi-stage welding chamber structure, which comprises an upper die and a lower die, wherein a plurality of diversion holes are uniformly distributed around the axis of the upper die, a diversion bridge is formed between two adjacent diversion holes, a die core protruding towards the welding chamber is arranged at the center of the end face of the matching end of the upper die and the lower die, the welding chamber is arranged at the matching end of the lower die and the upper die, a discharge hole communicated with the welding chamber is arranged at one end of the lower die far away from the upper die, a die core protruding towards the welding chamber is arranged at the center of the end face of the matching end of the upper die and the lower die, and the welding chamber at least comprises a section of constant-section welding chamber and a section of continuous variable-section welding chamber from the end face of the lower die to the inside of the die; the secondary welding chamber is adopted, and the pressure is increased when the diversion chamber is used for extrusion, so that the extrusion ratio is increased, and the profile is easy to form.
Description
Technical Field
The utility model relates to the technical field of dies, in particular to a section extrusion die with a multi-stage welding chamber structure.
Background
The aluminum alloy has good corrosion resistance, light weight, weldability and the like, and people know and recognize the aluminum alloy deeply, so that the aluminum alloy profile is widely applied, and the aluminum alloy is generally prepared by directly extruding through a die in the manufacturing process;
the existing mould for producing the aluminum profile mainly comprises an upper mould and a lower mould, when the profile is extruded, materials flow into a welding chamber in the lower mould after being shunted through a shunt hole in the upper mould, flow is gathered after entering the welding chamber, then the materials enter a forming space formed by a mould core and a mould hole for extrusion forming, and finally the materials are discharged from a discharge hole; because the die adopts forward extrusion, when the forward extrusion split die is used for producing aluminum profiles, ingot blanks need to be welded in a welding chamber through the split holes, so the die can be provided with welding lines, the forward extrusion die can only reduce the depth of the welding lines as much as possible, or the welding lines are avoided at corners, and the effect of avoiding the welding lines is achieved;
as shown in fig. 5, the split hole of the conventional die is directly connected with the welding chamber, the welding chamber is shallow, the welding area is small, no pressurization is performed after the welding area, the welding chamber is a straight hole arranged axially, no blocking is performed, no blocking force is generated, the pressure is low, welding lines are easy to appear on the surface of the extruded profile, and the surface quality is affected.
Disclosure of Invention
The utility model aims to solve the technical problems, and provides a section extrusion die with a multi-stage welding chamber structure, which adopts a secondary welding chamber and pressurizes again, so that the pressure during extrusion of a diversion chamber is improved, the extrusion ratio is improved, the section is easy to form, the waste is reduced, and the production cost is reduced.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a section bar extrusion die with multistage seam room structure, includes mould and lower mould, be equipped with a plurality of on the last mould around last mould axis evenly distributed's branch flow hole, form the reposition of redundant personnel bridge between two adjacent branch flow holes, the lower mould is equipped with the seam room with the cooperation end of last mould, the lower mould is kept away from the one end of going up the mould and is equipped with the discharge gate with the seam room intercommunication, the terminal surface central point of the cooperation end of last mould and lower mould is equipped with to the convex mold core of seam room, the seam room by lower mould terminal surface includes one section constant cross section seam room and one section continuous variable cross section seam room at least to the mould in.
Preferably, the conventional die bonding chamber depth is about 20mm, and the current solution achieves a die bonding chamber depth of 55mm.
In order to optimize the flow guiding structure, improve the pressure of the welding chamber during extrusion and improve the extrusion ratio, a further preferable technical scheme is that the cross section of the variable cross section welding chamber continuously becomes smaller from one end close to the constant cross section welding chamber to one end of the discharge port.
In order to optimize the flow guiding structure, the pressure of the flow dividing hole during extrusion is improved, the extrusion ratio is improved, and the further preferable technical scheme is that the cross section area of the flow dividing hole is continuously increased from one end of the upper die to the middle part of the upper die along the flow direction, and then continuously decreased to the other end of the upper die.
In order to optimize the flow guiding structure, improve the flow guiding effect of the welding chamber and the mold core and improve the extrusion ratio, a further preferable technical scheme is that the mold core extends into the discharge hole from the upper mold, the cross section area of the mold core from the upper mold to the equal section welding chamber is continuously increased, and the outer peripheral surface in the equal section welding chamber is provided with a convex which protrudes along the radial direction and is continuously decreased again, so that the mold core with the equal section area is arranged to the discharge hole.
In order to optimize the flow guiding structure, improve the flow guiding effect of the welding chamber and the mold core and improve the extrusion ratio, a further preferable technical scheme is that the outer peripheral surface of the mold core positioned in the discharge hole is provided with a circle of convex rings.
Compared with the prior art, the utility model has the beneficial effects that: the split holes are reamed, the flow of metal fluid is increased, protrusions are arranged at the joint of the mold core and the welding chamber, the flow direction of the metal fluid is changed, the depth of the welding chamber is deepened, the welding chamber rolls more fully in the welding chamber, pressurization is carried out, the secondary welding chamber is adopted, pressurization is carried out again, the pressure of the flow guiding chamber during extrusion is improved, the forming degree is improved, waste is reduced, the production cost is reduced, welding lines are prevented from being generated on the surface of a section bar, and the surface quality is improved.
Drawings
FIG. 1 is an isometric view of the present utility model;
FIG. 2 is a cross-sectional view of FIG. 1 of the present utility model;
FIG. 3 is an end view of the feed end of the upper die of the present utility model;
FIG. 4 is an end view of the discharge end of the lower die of the present utility model;
FIG. 5 is a schematic diagram of a prior art structure;
in the figure: 10. an upper die; 11. a diversion aperture; 12. a mold core; 13. a protrusion; 14. a convex ring; 15. a shunt bridge; 20. a lower die; 21. a discharge port; 22. a secondary welding chamber; 23. a primary welding chamber.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Examples
As shown in fig. 1-4, a section extrusion die with a multi-stage welding chamber structure comprises an upper die 10 and a lower die 20, wherein a plurality of flow dividing holes 11 uniformly distributed around the axis of the upper die 10 are formed in the upper die 10, a flow dividing bridge 15 is formed between two adjacent flow dividing holes 11, a welding chamber is formed at the matching end of the lower die 20 and the upper die 10, a discharge port 21 communicated with the welding chamber is formed at one end of the lower die 20 far away from the upper die 10, a die core 12 protruding towards the welding chamber is arranged at the center of the end surface of the matching end of the upper die 10 and the lower die 20, and the welding chamber at least comprises a section of constant-section welding chamber and a section of continuous variable-section welding chamber from the end surface of the lower die 20 to the inside of the die;
specifically, one end of the upper die 10 is provided with five diversion holes 11, the diversion holes 11 axially penetrate from one end of the upper die 10 to the other end of the upper die 10 to form a communicated metal fluid channel, the five diversion holes 11 are annularly arranged around the axis of the upper die 10, a diversion bridge 15 is formed between two adjacent diversion holes 11, the section of each diversion hole 11 is triangular, the inner corner is in arc transition, the inner wall of each diversion hole 11 is smooth and convenient for the flow of metal fluid, one end of the upper die 10 is connected with the lower die 20, the corresponding connecting end of the lower die 20 is provided with a welding chamber, one end of the lower die 20 far away from the upper die 10 is provided with a discharge port 22 and is communicated with the welding chamber 21, the welding chamber comprises a primary welding chamber 23 and a continuous secondary welding chamber 22, the primary welding chamber 23 is a cavity with one end of equal section, the lower die 20 is axially arranged from the end surface of the lower die 20 to the inside of the die, the secondary welding chamber 22 is a cavity with continuously variable cross-section area from the inner end surface of the primary welding chamber 23 to the joint of the secondary welding chamber 22 and the discharge port 21, and a flow blocking surface is formed at the joint, namely the cross-section area of the secondary welding chamber 22 at the joint is larger than that of the discharge port 21, a die core 12 protruding towards the welding chamber is arranged at the center of the end surface of the matching end of the upper die 10 and the lower die 20, the die core 12 extends into the welding chamber and is close to the discharge port 21, the die core 12 is a cylindrical die core, the extrusion ratio of fluid is improved by forming a variable cross-section cavity through the primary welding chamber 23 and the secondary welding chamber 22, and simultaneously the continuous cross-section of the secondary welding chamber 22 is connected with the discharge port, so that the flow direction of metal fluid is more stable, the generation of a welding line on the surface of a section is avoided, and the surface quality is improved;
for pipe flow, friction mainly occurs on the pipe wall, the speeds of fluids along the radial direction are different, friction resistance is generated between the fluids, besides the friction resistance, differential pressure resistance is also a type of flow resistance, the differential pressure resistance occurs due to the fact that different pressures exist in the flow direction, local barriers or sudden expansion and contraction of the sectional area exist on the flow channel, the flow speed is changed, kinetic energy of the fluids is converted into static pressure, differential pressure is generated, and the pressure of the fluids in the welding chamber is improved;
in order to optimize the flow guiding structure, the pressure of the welding chamber during extrusion is improved, the extrusion ratio is improved, and further, the section of the variable-section welding chamber from one end close to the constant-section welding chamber to one end of the discharge port is continuously reduced, namely the section of the secondary welding chamber 22 is continuously reduced, so that the feeding end is larger than the discharging end, and the extrusion ratio is improved;
in order to optimize the flow guiding structure, the pressure of the flow dividing hole 11 during extrusion is improved, the extrusion ratio is improved, further, the section of the flow dividing hole 11 is continuously enlarged from one end of the upper die 10 to the middle part of the upper die 10 along the flow direction, then continuously reduced to the other end of the upper die 10, the opening of the cavity feeding end of the flow dividing hole 11 is smaller, but the section of the middle part of the cavity of the flow dividing hole 11 is enlarged, the opening of the discharging end of the cavity of the flow dividing hole 11 is reduced, and a cavity structure with the diameters of the two ends smaller than that of the middle part is formed, and in order to improve the extrusion ratio of fluid through the change of the section of the flow dividing hole 11;
in order to optimize the flow guiding structure, improve the flow guiding effect of the welding chamber and the mold core 12 and improve the extrusion ratio, further, the mold core 12 extends from the upper mold 10 into the discharge hole 21, the cross section of the mold core 12 from the upper mold 12 to the equal cross section welding chamber continuously increases, the outer peripheral surface in the equal cross section welding chamber is provided with a protrusion 13 protruding along the radial direction, and continuously decreases, so that the mold core 12 with equal cross section area reaches the discharge hole; the cross section of the cavity at the feeding end of the primary welding chamber 23 is larger than that at the discharging end through the change of the cross section of the mold core 12, and the cavity of the primary welding chamber 23 is changed from large to small and then from small to large through the radial protruding protrusions 13 on the outer peripheral surface of the mold core 12, so that the variable cross section cavity is formed to increase the extrusion ratio of fluid;
in order to optimize the flow guiding structure, improve the flow guiding effect of the welding chamber and the mold core 12 and improve the extrusion ratio, further, the outer peripheral surface of the mold core 12 positioned in the discharge hole 22 is provided with a circle of convex rings 14, and one side of the convex rings 14 close to the primary welding chamber 23 forms a flow blocking surface, so that the metal fluid rolls in the cavity to increase the pressure difference.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (5)
1. The utility model provides a section bar extrusion die with multistage seam room structure, includes mould and lower mould, be equipped with a plurality of on the last mould around last mould axis evenly distributed's branch flow hole, form the reposition of redundant personnel bridge between two adjacent branch flow holes, the lower mould is equipped with the seam room with the cooperation end of last mould, the lower mould is kept away from the one end of going up the mould and is equipped with the discharge gate with the seam room intercommunication, the terminal surface central point of the cooperation end of last mould and lower mould is equipped with to the convex mold core of seam room, its characterized in that, the seam room by lower mould terminal surface includes one section constant cross section seam room and one section continuous variable cross section seam room to the mould in at least.
2. A profile extrusion die provided with a multi-stage bonding chamber structure according to claim 1, wherein the cross section of the variable cross section bonding chamber is continuously reduced from one end near the constant cross section bonding chamber to one end of the discharge port.
3. A profile extrusion die having a multi-stage bonding chamber structure according to claim 2, wherein the cross section of the split hole continuously increases from one end of the upper die to the middle of the upper die in the flow direction and continuously decreases to the other end of the upper die.
4. The profile extrusion die with a multi-stage welding chamber structure as claimed in claim 1, wherein the die core extends from the upper die into the discharge port, the die core continuously increases in cross section from the upper die to the constant cross section welding chamber, and the outer peripheral surface in the constant cross section welding chamber is provided with a protrusion protruding in the radial direction and continuously decreases again, so that the die core with the constant cross section reaches the discharge port.
5. The extrusion die for profiles with multi-stage weld chamber structures as in claim 4, wherein a ring of convex rings is further provided on the outer circumference of the die core in the discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320482265.4U CN219966023U (en) | 2023-03-14 | 2023-03-14 | Profile extrusion die with multistage welding chamber structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320482265.4U CN219966023U (en) | 2023-03-14 | 2023-03-14 | Profile extrusion die with multistage welding chamber structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219966023U true CN219966023U (en) | 2023-11-07 |
Family
ID=88579458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320482265.4U Active CN219966023U (en) | 2023-03-14 | 2023-03-14 | Profile extrusion die with multistage welding chamber structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219966023U (en) |
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2023
- 2023-03-14 CN CN202320482265.4U patent/CN219966023U/en active Active
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