CN212042063U - Corner welding chamber reposition of redundant personnel extrusion die - Google Patents
Corner welding chamber reposition of redundant personnel extrusion die Download PDFInfo
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- CN212042063U CN212042063U CN202020683090.XU CN202020683090U CN212042063U CN 212042063 U CN212042063 U CN 212042063U CN 202020683090 U CN202020683090 U CN 202020683090U CN 212042063 U CN212042063 U CN 212042063U
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- conical surface
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- welding chamber
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- 238000003466 welding Methods 0.000 title claims abstract description 76
- 238000001125 extrusion Methods 0.000 title claims abstract description 49
- 229910052751 metal Inorganic materials 0.000 abstract description 14
- 239000002184 metal Substances 0.000 abstract description 14
- 238000001953 recrystallisation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 229910000861 Mg alloy Inorganic materials 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010008 shearing Methods 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000001192 hot extrusion Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001095 light aluminium alloy Inorganic materials 0.000 description 1
- 229910000706 light magnesium alloy Inorganic materials 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011064 split stream procedure Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a corner seam room reposition of redundant personnel extrusion tooling, including extrusion stem, recipient, latch needle, reposition of redundant personnel mould and die, the cooperation is formed with the seam room between reposition of redundant personnel mould and the die, and the reposition of redundant personnel mould includes core and die body and a plurality of reposition of redundant personnel bridge, forms the reposition of redundant personnel hole between the adjacent reposition of redundant personnel bridge; the outer wall of the core part is formed by sequentially connecting an upper conical surface, a lower conical surface and a lower concave surface from top to bottom, wherein the lower conical surface is an inverted conical surface, and a corner is formed at the joint of the upper conical surface and the lower conical surface; the inner wall of the die body is a conical surface opposite to the upper conical surface of the core part, the upper part of the inner wall of the female die is an inverted conical surface opposite to the lower conical surface of the core part, the lower part of the inner wall of the female die is an inner concave surface opposite to the lower inner concave surface of the core part, and a corner structure is formed at the joint of the die body and the female die; the latch needle is connected to the core part along the axis; the welding chamber comprises a primary welding chamber and a secondary welding chamber which are communicated up and down. The utility model discloses compromise the seam room height and latch needle rigidity, improve the seam nature of reposition of redundant personnel metal, guaranteed the size precision of tubular product.
Description
Technical Field
The utility model belongs to the technical field of the metal tubular product rapid prototyping, especially, relate to a corner seam room reposition of redundant personnel extrusion die.
Background
The light magnesium alloy/aluminum alloy pipe fitting is a very common section bar, is not only commonly used as a structural member for realizing light weight of vehicles, such as automobile bumpers, seat supports, bicycle tripods and the like, but also can be used for forming key parts in various important high-tech fields of aviation, aerospace, automobiles, electronics and the like by processes such as internal high-pressure bulging bending and the like. Therefore, the realization of the short-process manufacturing of the high-performance precise magnesium alloy pipe has great significance for realizing the rapid forming of high-reliability tubular magnesium alloy parts and promoting the flourishing development of important industrial fields of aviation, aerospace, automobiles, electronics and the like supporting national economy and technological development.
The magnesium alloy/aluminum alloy pipe is usually formed by hot extrusion with a piercing pin in a three-dimensional compressive stress state or by hot extrusion with a split stream. However, compared with the extrusion of the perforating needle, the shunting extrusion has the advantages of high production efficiency of extruded pipes, high precision of wall thickness dimension, rich pipe section shapes and the like, and is an effective means for realizing short-flow forming of the magnesium alloy pipes. However, the magnesium alloy shunt extruded tube has a shunt metal welded seam along the length direction, and the seam is a key factor for determining the quality of the tube. Poor welding quality of the welding seam not only seriously affects the subsequent internal high-pressure bulging process, but also affects the reliability of magnesium alloy parts. And is prone to cracking at the weld during subsequent bulging and bending forming processes.
In the shunting extrusion forming process, the welding time is also an important factor influencing the welding quality, and the welding time can be increased by increasing the length of the welding chamber. The structure schematic diagram of the existing forming die is shown in figure 1, the forming die comprises an extrusion rod 1, an extrusion container 2, a latch needle 4, a split flow die 5 and a female die 7, the extrusion container, the split flow die and the female die are coaxially overlapped from top to bottom, the extrusion rod is matched with an inner cavity of the extrusion container in a vertical sliding mode, the latch needle is coaxially connected to the split flow die and extends downwards from the female die, a split flow bridge and a split flow hole are formed in the split flow die, and a welding chamber is formed between the split flow die and the female die in a matching mode. In the process of pipe forming, a blank 3 is added into an extrusion cylinder, the blank is heated and melted, enters a welding chamber from the extrusion cylinder through a shunting hole under the action of an extrusion rod, shunts metal 6 under strong pressure to be welded in the welding chamber, and then flows out of a die after being formed through a work band on a latch needle and a female die to form the size of a target pipe. However, in the existing forming die structure, the length of the welding surface 8 is increased by increasing the height h1 of the welding chamber, and the length of the latch needle is increased at the same time, so that the rigidity of the latch needle is reduced, the wall thickness of the pipe is not uniform, and the size precision of the pipe is reduced.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to overcome above-mentioned prior art not enough, and provide a take into account corner seam room reposition of redundant personnel extrusion die of seam room height and latch needle rigidity, adopt toper face and interior concave surface complex reposition of redundant personnel mould and die, improve latch needle rigidity when increasing seam room length, the shearing deformation that utilizes the corner structure simultaneously arouses metal dynamic recrystallization principle to improve the shearing deformation degree of reposition of redundant personnel metal, and the combination of one-time seam room and secondary seam room, improve dynamic recrystallization degree, thereby improve the seam nature of reposition of redundant personnel metal, the size precision of tubular product has been guaranteed.
In order to solve the technical problem, the utility model discloses a technical scheme does:
designing a shunting extrusion die of a corner welding chamber, which comprises an extrusion rod, an extrusion container, a latch needle, a shunting die and a female die, wherein the shunting die is matched with the female die to form the welding chamber, the shunting die comprises a core part, a die body and a plurality of shunting bridges which are circumferentially arranged and used for connecting the core part and the die body, and shunting holes are formed between the adjacent shunting bridges; the outer wall of the core part is formed by sequentially connecting an upper conical surface, a lower conical surface and a lower inner concave surface from top to bottom, wherein the lower conical surface is an inverted conical surface, and a corner is formed at the joint of the upper conical surface and the lower conical surface; the inner wall of the die body is a conical surface opposite to the upper conical surface of the core part, the upper part of the inner wall of the female die is an inverted conical surface opposite to the lower conical surface of the core part, the lower part of the inner wall of the female die is an inner concave surface opposite to the lower inner concave surface of the core part, and a corner structure is formed at the joint of the die body and the female die; the latch needle is connected to the core part along the axis;
the welding chamber comprises a primary welding chamber and a secondary welding chamber which are communicated up and down, wherein the primary welding chamber is formed by matching a lower conical surface of the core part with an inverted conical surface arranged on the inner wall of the female die, and the secondary welding chamber is formed by encircling a lower inner concave surface of the core part, an inner concave surface arranged on the inner wall of the female die and the surface of the latch needle.
Preferably, in the corner welding chamber shunting extrusion die, the surface of the latch needle corresponding to the secondary welding chamber is an inner concave surface.
Preferably, in the corner welding chamber split-flow extrusion die, the concave surfaces are all arc-shaped concave surfaces.
Preferably, in the corner welding chamber split-flow extrusion die, a flow guide die is further included, wherein the flow guide die is arranged at the top of the core part and is arranged along the axis.
Preferably, in the diversion extrusion die of the corner welding chamber, a boss is arranged at the lower part of the diversion die, the core part is hollow axially, and the diversion die is inserted into the hollow cavity of the core part through the boss.
Preferably, in the corner welding chamber shunting extrusion die, the hollow cavity of the core part is of a step-shaped shaft hole structure, the latch needle is of a corresponding step-shaped shaft shape, and the latch needle is inserted into the hollow cavity of the core part.
Preferably, in the diversion extrusion die of the corner welding chamber, the range of the corner alpha formed at the joint of the die body and the female die is 40-80 degrees.
Preferably, in the branched extrusion die of the corner welding chamber, the taper angle β of the taper surface where the inner wall of the die body is located with respect to the vertical surface ranges from 90 ° to 120 °.
The working principle of the utility model is as follows:
the utility model discloses corner seam room reposition of redundant personnel extrusion die, the shearing deformation that utilizes the corner structure arouses dynamic recrystallization mechanism and has strengthened reposition of redundant personnel extrusion pipe seam performance, the die middle part will be shunted and conical surface and interior concave surface integrated configuration are designed by original straight section of thick bamboo structural style, design die inner wall superstructure form for the face of falling the cone, form a corner at reposition of redundant personnel mould and die juncture, the metal flows through the corner and takes place shearing deformation, increase reposition of redundant personnel metal deflection, promote dynamic recrystallization to take place, atomic diffusion capacity is improved, promote the welding seam performance.
The utility model discloses technical scheme's beneficial technological effect is:
1. structurally, the utility model discloses add the corner structure in reposition of redundant personnel mould and die junction, utilize metal corner shear deformation principle to improve the degree of deformation of welding alloy metal, promote the emergence of dynamic recrystallization, improve dynamic recrystallization degree, improve the atomic diffusion ability when reposition of redundant personnel metal welding to improve the seam performance of welding seam.
2. Structurally, the utility model discloses to reposition of redundant personnel mould middle part by original straight section of thick bamboo structural style design for toper face and interior concave surface integrated configuration, when increasing the seam room height, increased the rigidity of latch needle, guaranteed the size precision of tubular product. The welding chamber comprises a primary welding chamber and a secondary welding chamber, so that the effective length of the welding chamber can be increased, the welding time is increased, and the welding performance of a welding line is improved.
3. Structurally, the utility model discloses add the corner structure, because the deflection that the corner shear deformation can improve the reposition of redundant personnel metal can extrude fine grain tubular product under the little extrusion ratio condition, reduce the equipment tonnage, reduce the equipment input.
4. Structurally, the utility model discloses the latch needle wearing and tearing influence tubular product precision easily, with reposition of redundant personnel mould, latch needle, the design of water conservancy diversion mould three components of a whole that can function independently, change latch needle that can be convenient practices thrift mould manufacturing cost.
Drawings
The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:
FIG. 1 is a schematic cross-sectional view of a conventional split-flow extrusion die for a corner welding chamber;
FIG. 2 is a schematic view of a cross-sectional structure of the diversion extrusion die of the corner welding chamber of the present invention;
FIG. 3 is a schematic view of the sectional structure of the split-flow die, the female die, the flow guide die and the latch needle shown in FIG. 2;
number in the figure:
1. the method comprises the following steps of (1) extruding a rod, 2, an extruding container, 3, a blank, 4, a latch needle, 5, a split flow die, 6, split flow metal, 7, a female die, 8 and a welding surface;
1 ', an extrusion rod, 2 ', an extrusion cylinder, 3 ', a blank, 4 ', a latch needle, 5 ', a flow distribution die, 7 ', a female die, 8 ' and a welding surface;
11. the device comprises a flow guide die, 12, a corner structure, 13, a primary welding chamber, 14, a secondary welding chamber, 15, a shunt bridge, 16 and a shunt hole;
21. a core 22, a mold body;
h1, height of the weld chamber; h2, effective length of the weld chamber.
Detailed Description
In the following, the accompanying drawings in the present invention will be combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only schematic partial embodiments of the present invention, and are not used to limit the scope of the present invention, and any person skilled in the art should belong to the protection scope of the present invention without departing from the equivalent changes and modifications made by the present invention under the premise of the concept and principle of the present invention.
Example 1
Referring to fig. 2-3, the split-flow extrusion die for the corner welding chamber of the present invention includes an extrusion rod 1 ', an extrusion cylinder 2 ', a latch needle 4 ', a split-flow die 5 ', a female die 7 ', etc. The extrusion barrel, the split flow die and the female die are coaxially overlapped from top to bottom, the extrusion rod is matched with the inner cavity of the extrusion barrel in a vertical sliding mode, the latch needle is coaxially connected to the split flow die and extends downwards from the female die, a split flow bridge 15 and a split flow hole 16 are formed in the split flow die, and a welding chamber is formed between the split flow die and the female die in a matched mode.
Specifically, the split die includes a core 21 and a die body 22, and a plurality of split bridges 15 circumferentially arranged for connecting the core and the die body, with split holes 16 being formed between adjacent split bridges. The outer wall of the core part is formed by sequentially connecting an upper conical surface, a lower conical surface and a lower concave surface from top to bottom, wherein the lower conical surface is an inverted conical surface, and a corner is formed at the joint of the upper conical surface and the lower conical surface; the inner wall of the die body is a conical surface opposite to the upper conical surface of the core part, the upper part of the inner wall of the female die is an inverted conical surface opposite to the lower conical surface of the core part, the lower part of the inner wall of the female die is an inner concave surface opposite to the lower inner concave surface of the core part, and a corner structure 12 is formed at the joint of the die body and the female die.
The welding chamber comprises a primary welding chamber 13 and a secondary welding chamber 14 which are communicated up and down, wherein the primary welding chamber is formed by matching a lower conical surface of the core part with an inverted conical surface arranged on the inner wall of the female die, and the secondary welding chamber is formed by surrounding a lower inner concave surface of the core part, an inner concave surface arranged on the inner wall of the female die and an inner concave surface arranged on the surface of the latch needle. All the concave surfaces are arc concave surfaces.
The axial direction of the core part is hollow, the hollow cavity of the core part is of a step-shaped shaft hole structure, the latch needle is in a corresponding step-shaped shaft shape, and the latch needle is inserted into the hollow cavity of the core part along the axial line.
In addition, the range value of the rotation angle alpha formed at the joint of the die body and the female die is 40-80 degrees. The range value of the taper angle beta of the taper surface where the inner wall of the die body is located relative to the vertical surface is 90-120 degrees.
The utility model discloses utilize the shear deformation of corner structure to arouse dynamic recrystallization mechanism and strengthened reposition of redundant personnel extruded tube seam performance, with the reposition of redundant personnel mould middle part by original straight section of thick bamboo structural style design for conical surface and interior concave surface integrated configuration, with die inner wall superstructure form design for the face of falling the cone, form a corner at reposition of redundant personnel mould and die juncture, the metal flows through the corner and takes place shear deformation, increase reposition of redundant personnel metal deflection, promote dynamic recrystallization to take place, atomic diffusion capacity is improved, promote the welding seam performance. The welding chamber comprises a primary welding chamber and a secondary welding chamber, the effective length h2 of the welding chamber, namely the length of the welding surface 8', can be increased, the welding time is increased, and the welding performance of the welding seam is improved.
Example 2
Referring to fig. 2-3, the present embodiment is similar to embodiment 1 in structure, and like numbers in the drawings represent the same meanings, and will not be repeated here, except that the present embodiment further includes a guide mold 11 disposed on the top of the core and along the axis. The lower part of the guide die is provided with a boss, the core part 21 is hollow axially, and the guide die 11 is inserted into the hollow cavity of the core part 21 through the boss. The diversion mold plays a role in diversion/drainage.
In the present specification, various embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts in the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a corner seam room reposition of redundant personnel extrusion die, includes extrusion stem, recipient, latch needle, reposition of redundant personnel mould and die, wherein the cooperation is formed with seam room, characterized by between reposition of redundant personnel mould and the die: the shunting die comprises a core part, a die body and a plurality of shunting bridges which are circumferentially arranged and used for connecting the core part and the die body, and shunting holes are formed between the adjacent shunting bridges; the outer wall of the core part is formed by sequentially connecting an upper conical surface, a lower conical surface and a lower inner concave surface from top to bottom, wherein the lower conical surface is an inverted conical surface, and a corner is formed at the joint of the upper conical surface and the lower conical surface; the inner wall of the die body is a conical surface opposite to the upper conical surface of the core part, the upper part of the inner wall of the female die is an inverted conical surface opposite to the lower conical surface of the core part, the lower part of the inner wall of the female die is an inner concave surface opposite to the lower inner concave surface of the core part, and a corner structure is formed at the joint of the die body and the female die; the latch needle is connected to the core part along the axis;
the welding chamber comprises a primary welding chamber and a secondary welding chamber which are communicated up and down, wherein the primary welding chamber is formed by matching a lower conical surface of the core part with an inverted conical surface arranged on the inner wall of the female die, and the secondary welding chamber is formed by encircling a lower inner concave surface of the core part, an inner concave surface arranged on the inner wall of the female die and the surface of the latch needle.
2. The corner welding chamber split flow extrusion die of claim 1, wherein: the surface of the latch needle corresponding to the secondary welding chamber is an inward concave surface.
3. The corner welding chamber shunting extrusion die of claim 1 or 2, wherein: the concave surfaces are arc concave surfaces.
4. The corner welding chamber split flow extrusion die of claim 1, wherein: the flow guide die is arranged at the top of the core part and arranged along the axis.
5. The corner welding chamber split flow extrusion die of claim 4, wherein: the lower part of the diversion die is provided with a boss, the core part is hollow axially, and the diversion die is inserted into the hollow cavity of the core part through the boss.
6. The corner welding chamber split flow extrusion die of claim 5, wherein: the hollow cavity of the core part is of a step-shaped shaft hole structure, the latch needle is of a corresponding step-shaped shaft shape, and the latch needle is inserted into the hollow cavity of the core part.
7. The corner welding chamber split flow extrusion die of claim 1, wherein: the range value of the rotation angle alpha formed at the joint of the die body and the female die is 40-80 degrees.
8. The corner welding chamber split flow extrusion die of claim 1, wherein: the range value of the taper angle beta of the taper surface where the inner wall of the die body is located relative to the vertical surface is 90-120 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020683090.XU CN212042063U (en) | 2020-04-29 | 2020-04-29 | Corner welding chamber reposition of redundant personnel extrusion die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020683090.XU CN212042063U (en) | 2020-04-29 | 2020-04-29 | Corner welding chamber reposition of redundant personnel extrusion die |
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| Publication Number | Publication Date |
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| CN212042063U true CN212042063U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020683090.XU Expired - Fee Related CN212042063U (en) | 2020-04-29 | 2020-04-29 | Corner welding chamber reposition of redundant personnel extrusion die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458172A (en) * | 2021-08-19 | 2021-10-01 | 安徽华深铝业有限公司 | Extrusion forming die for industrial aluminum profile |
-
2020
- 2020-04-29 CN CN202020683090.XU patent/CN212042063U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458172A (en) * | 2021-08-19 | 2021-10-01 | 安徽华深铝业有限公司 | Extrusion forming die for industrial aluminum profile |
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Granted publication date: 20201201 Termination date: 20210429 |