CN211888460U - Liquid nitrogen cooling device for aluminum alloy extrusion die - Google Patents
Liquid nitrogen cooling device for aluminum alloy extrusion die Download PDFInfo
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- CN211888460U CN211888460U CN201921856981.4U CN201921856981U CN211888460U CN 211888460 U CN211888460 U CN 211888460U CN 201921856981 U CN201921856981 U CN 201921856981U CN 211888460 U CN211888460 U CN 211888460U
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 189
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 94
- 239000007788 liquid Substances 0.000 title claims abstract description 92
- 238000001816 cooling Methods 0.000 title claims abstract description 73
- 238000001125 extrusion Methods 0.000 title claims abstract description 41
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 29
- 229910052782 aluminium Inorganic materials 0.000 claims description 39
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 38
- 230000007704 transition Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 13
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000001192 hot extrusion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model provides a be applied to aluminium alloy liquid nitrogen cooling device for extrusion die in metal section processing technology field, it improves liquid nitrogen cooling device's structure, it includes the extrusion die, the aluminium alloy, the bed die, the bottom plate, the die cushion, the under bracing, the one-level bottom plate, the second grade bottom plate, the bed die supports, the second grade upper padding plate, the one-level upper padding plate, liquid nitrogen shower nozzle, the hose, liquid nitrogen cylinder supports, liquid nitrogen cylinder, the crossbeam supports, an upper fixed plate, upper die and cooling ring groove, the die cushion divide into upper die pad and bed die pad down, be equipped with first passageway in the upper fixed plate, be equipped with the second passageway in the upper die cushion, the die cushion is equipped with the annular groove along the circumferencial direction, be equipped with the bell jar between annular groove and the cooling ring groove, the one end and the cooling ring groove of bell jar communicate. The utility model provides a new liquid nitrogen cooling device for aluminum alloy extrusion die can effectually prevent the oxidation problem of aluminium alloy extrusion in-process, and its simple structure has fine practicality.
Description
Technical Field
The utility model relates to a metal section processing technology field particularly, relates to a liquid nitrogen cooling device for aluminum alloy extrusion die.
Background
In the extrusion process of the aluminum profile, the nitrogen cooling technology can effectively prolong the service life of the die and improve the surface quality of the aluminum profile.
Through a large amount of searches, some typical prior arts are found, for example, patent with application number 200910247155.4 discloses a high-efficiency cooling aluminum profile hot extrusion die structure, as shown in fig. 4, the die structure comprises a die and a die pad, a liquid nitrogen inlet is arranged on the outer edge of the die pad, a liquid nitrogen channel is arranged on the contact surface of the die pad and the die, the die structure is directly cooled to a die working belt, the direct cooling of the die working belt and a die outlet profile can be realized, and the cooling effect is better. Still disclose an aluminium alloy extrusion forming die cooling body as patent application No. 201810467505.7, as shown in fig. 5, it includes the mould and the die pad of aluminium alloy extrusion die, and this cooling body adopts cooling water and normal atmospheric temperature nitrogen gas to replace the liquid nitrogen and carries out the mould cooling, and use cost is low, has good cooling effect and protection effect simultaneously. Still as patent application No. 201822049050.5 discloses a liquid nitrogen cooling device who is applied to aluminum alloy tubular product, as shown in fig. 6, this liquid nitrogen cooling device can realize that aluminum pipe material is in hot extrusion process, carries out direct cooling to high temperature aluminum pipe material forming die and aluminum pipe material, improves the surface quality of tubular product, extension mould life.
Therefore, as for how to utilize liquid nitrogen to cool the extrusion die, the practical problems (saving the nitrogen usage amount, cost and the like) to be treated in practical application still have many unrefined solutions.
SUMMERY OF THE UTILITY MODEL
In order to overcome the deficiency of the prior art, the utility model provides a liquid nitrogen cooling device for aluminum alloy extrusion die, the utility model discloses a concrete technical scheme as follows:
a liquid nitrogen cooling device for an aluminum alloy extrusion die comprises an extrusion die, an aluminum profile, a lower die, a lower fixing plate, a die pad, a lower support, a first-level lower backing plate, a second-level lower backing plate, a lower backing plate support, a second-level upper backing plate, a first-level upper backing plate, a liquid nitrogen sprayer, a hose, a liquid nitrogen cylinder support, a liquid nitrogen cylinder, a beam support, an upper fixing plate, an upper die and a cooling ring groove, wherein the die pad is divided into the upper die pad and the lower die pad, the liquid nitrogen cylinder is supported and fixed on the beam support through the liquid nitrogen cylinder support, one end of the hose is connected with the liquid nitrogen cylinder, the other end of the hose is connected with the liquid nitrogen sprayer, a first channel is arranged in the upper fixing plate, the liquid nitrogen sprayer is arranged in the upper fixing plate and is in sealing connection with the first channel, the upper die is arranged at the lower end of the upper fixing plate, the lower fixing plate and the first-level lower backing plate are fixedly arranged on the lower support, the second-level lower backing plate and the second-level upper backing plate are arranged on the lower backing plate support, one end of the first-level upper backing plate is connected with the upper fixing plate, the other end of the first-level upper backing plate is connected with the second-level upper backing plate, the upper die pad is arranged at the lower end of the upper fixing plate and is positioned between the first-level upper backing plate and the upper die, the lower die pad is arranged at the upper end of the lower fixing plate and is positioned between the first-level lower backing plate and the lower die, the aluminum profile is arranged in the extrusion die, a cooling ring groove is formed between the upper die pad and the lower die pad, a second channel is arranged in the upper die pad, a circular groove is arranged on the die pad along the circumferential direction, one end of the second channel is communicated with the first channel, and the other end, the annular groove is provided with a conical groove between the annular groove and the cooling ring groove, the small-bore end of the conical groove is communicated with the annular groove, and the large-bore end of the conical groove is communicated with the cooling ring groove.
Optionally, the tapered groove is provided with two, and the two tapered grooves are symmetrically arranged.
Optionally, the large-aperture end of the tapered groove is in arc transition with the cooling ring groove.
Optionally, the die pad is integrally formed.
The utility model discloses the beneficial technological effect who gains includes:
1. the liquid nitrogen cooling device for the aluminum alloy extrusion die can effectively prevent the oxidation problem in the aluminum profile extrusion process, maintain the temperature of the upper die and the lower die at a lower level, improve the service life of the die, refine the crystal grain structure after the aluminum profile is formed and improve the strength and rigidity performance of the aluminum profile;
2. the utility model has simple structure, good market prospect, good finished product quality, high precision, wide product range and long service life;
3. the die pad is integrally formed, so that liquid nitrogen can have a better cooling effect, and the surface quality of the formed aluminum profile is ensured;
4. the large-aperture end of the conical groove is in arc transition with the cooling ring groove, and after liquid nitrogen enters the conical groove from the annular groove, the liquid nitrogen can be rapidly and uniformly dispersed into the cooling ring groove, so that the oxidation of the formed aluminum profile is better prevented, and the surface quality of the formed aluminum profile is better ensured.
Drawings
The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.
FIG. 1 is a schematic view of an overall structure of a liquid nitrogen cooling device for an aluminum alloy extrusion die according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a structural relationship between a die pad and an upper die, a lower die and a cooling ring groove according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a structural relationship between a die pad and a cooling ring groove according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a high-efficiency cooling aluminum profile hot extrusion die structure in the prior art;
FIG. 5 is a schematic structural diagram of a cooling mechanism of an aluminum profile extrusion molding die in the prior art;
FIG. 6 is a schematic structural diagram of a liquid nitrogen cooling device applied to aluminum alloy pipes in the prior art.
Description of reference numerals: 1-extrusion die, 2-aluminum profile, 3-lower die, 4-lower fixed plate, 5-die cushion, 6-lower support, 7-primary lower backing plate, 8-secondary lower backing plate, 9-lower backing plate support, 10-secondary upper backing plate, 11-primary upper backing plate, 12-liquid nitrogen spray head, 13-hose, 14-liquid nitrogen cylinder support, 15-liquid nitrogen cylinder, 16-cross beam support, 17-upper fixed plate, 18-upper die, 19-cooling ring groove, 50-upper die cushion, 51-lower die cushion, 20-first channel, 21-second channel, 22-ring groove, 23-conical groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention will be further described in detail with reference to the following embodiments thereof; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description that follows.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc., indicating directions or positional relationships based on those shown in the drawings, it is only for convenience of description and simplicity of description, but not for indicating or implying that the indicated device or component must have a specific direction, be constructed in a specific direction, and operate, and therefore the terms describing the positional relationships in the drawings are used for illustrative purposes only and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the above terms according to specific situations.
The utility model relates to a liquid nitrogen cooling device for aluminum alloy extrusion die, according to the following embodiment of the demonstration that fig. 1-6 are shown:
the first embodiment is as follows:
the utility model provides a liquid nitrogen cooling device for aluminum alloy extrusion die, includes extrusion die 1, aluminium alloy 2, bed die 3, bottom plate 4, die cushion 5, under bracing 6, one-level bed die 7, second grade bed die 8, bed die support 9, second grade bed die 10, one-level bed die 11, liquid nitrogen shower nozzle 12, hose 13, liquid nitrogen jar support 14, liquid nitrogen jar 15, crossbeam support 16, an upper fixed plate 17, go up mould 18 and cooling ring groove 19, die cushion 5 divide into bed die 50 and bed die 51 down, liquid nitrogen jar 15 passes through liquid nitrogen jar support 14 fixes on crossbeam support 16, hose 13 one end with liquid nitrogen jar 15 is connected, the hose 13 other end with liquid nitrogen shower nozzle 12 is connected, be equipped with first passageway 20 in the bed die 17, liquid nitrogen shower nozzle 12 install in the bed die 17 and with first passageway 20 sealing connection, the upper die 18 is installed at the lower end of the upper fixing plate 17, the lower die 3 is installed at the upper end of the lower fixing plate 4, the lower fixing plate 4 and the first-level lower padding plate 7 are fixedly installed on the lower support 6, the second-level lower padding plate 8 and the second-level upper padding plate 10 are installed on the lower padding plate support 9, one end of the first-level upper padding plate 11 is connected with the upper fixing plate 17, the other end of the first-level upper padding plate 11 is connected with the second-level upper padding plate 10, the upper die pad 50 is installed at the lower end of the upper fixing plate 17 and is positioned between the first-level upper padding plate 11 and the upper die 18, the lower die pad 51 is installed at the upper end of the lower fixing plate 4 and is positioned between the first-level lower padding plate 7 and the lower die 3, the aluminum profile 2 is installed in the extrusion die 1, and the upper die pad 50 and the, go up to be equipped with second passageway 21 in the die pad 50, die pad 5 is equipped with annular groove 22 along the circumferencial direction, second passageway 21 one end with first passageway 20 communicates with each other, second passageway 21 the other end with annular groove 22 communicates with each other, be equipped with bell jar 23 between annular groove 22 and the cooling ring groove 19, the aperture end of bell jar 23 with annular groove 22 communicates with each other, the aperture end of bell jar 23 with cooling ring groove 19 communicates with each other.
By adopting the technical scheme, the liquid nitrogen cylinder 15 is fixed on the beam support 16 through the liquid nitrogen cylinder support 14, the liquid nitrogen cylinder 15 is connected with the hose 13, the tail end of the hose 13 is connected with the liquid nitrogen spray head 12, the liquid nitrogen spray head 12 is installed in the upper fixing plate 17, the liquid nitrogen spray head 12 is communicated with the cooling ring groove 19, when an unprocessed aluminum profile 2 is placed into the extrusion die 1, the extrusion die 1 works to push the aluminum profile 2 to enter an opening formed by the upper die 18 and the lower die 3, and therefore the required aluminum profile is formed, but at the moment, the aluminum profile 2 is deformed into a formed aluminum profile, and a large amount of heat energy is generated. At this time, the liquid nitrogen cylinder 15 is opened, and the liquid nitrogen is conveyed into the cooling ring groove 19 through the hose 13 after passing through the hose 13, the first channel 20, the second channel 21, the annular groove 22 and the tapered groove 23, so that the extruded and molded aluminum profile is cooled, the molded aluminum profile is protected in inert gas, the oxidation of the molded aluminum profile is prevented, the surface quality of the profile is ensured to a certain extent, crystal grains are further refined, the rigidity and the strength of the profile are improved, the upper die 19 and the lower die 3 are protected, and the service life is prolonged.
In addition, the flexible pipe 13 is dispersed into the tapered groove 23 along the radial direction along the annular groove 22 after passing through the first passage 20 and the second passage 21, and is blown onto the cooling ring groove 19 and the work belt between the upper die pad 50 and the lower die pad 51, and the tapered groove 23 is designed to reduce the amount of liquid nitrogen used, thereby saving time.
Example two:
the utility model provides a liquid nitrogen cooling device for aluminum alloy extrusion die, includes extrusion die 1, aluminium alloy 2, bed die 3, bottom plate 4, die cushion 5, under bracing 6, one-level bed die 7, second grade bed die 8, bed die support 9, second grade bed die 10, one-level bed die 11, liquid nitrogen shower nozzle 12, hose 13, liquid nitrogen jar support 14, liquid nitrogen jar 15, crossbeam support 16, an upper fixed plate 17, go up mould 18 and cooling ring groove 19, die cushion 5 divide into bed die 50 and bed die 51 down, liquid nitrogen jar 15 passes through liquid nitrogen jar support 14 fixes on crossbeam support 16, hose 13 one end with liquid nitrogen jar 15 is connected, the hose 13 other end with liquid nitrogen shower nozzle 12 is connected, be equipped with first passageway 20 in the bed die 17, liquid nitrogen shower nozzle 12 install in the bed die 17 and with first passageway 20 sealing connection, the upper die 18 is installed at the lower end of the upper fixing plate 17, the lower die 3 is installed at the upper end of the lower fixing plate 4, the lower fixing plate 4 and the first-level lower padding plate 7 are fixedly installed on the lower support 6, the second-level lower padding plate 8 and the second-level upper padding plate 10 are installed on the lower padding plate support 9, one end of the first-level upper padding plate 11 is connected with the upper fixing plate 17, the other end of the first-level upper padding plate 11 is connected with the second-level upper padding plate 10, the upper die pad 50 is installed at the lower end of the upper fixing plate 17 and is positioned between the first-level upper padding plate 11 and the upper die 18, the lower die pad 51 is installed at the upper end of the lower fixing plate 4 and is positioned between the first-level lower padding plate 7 and the lower die 3, the aluminum profile 2 is installed in the extrusion die 1, and the upper die pad 50 and the, go up to be equipped with second passageway 21 in the die pad 50, die pad 5 is equipped with annular groove 22 along the circumferencial direction, second passageway 21 one end with first passageway 20 communicates with each other, second passageway 21 the other end with annular groove 22 communicates with each other, be equipped with bell jar 23 between annular groove 22 and the cooling ring groove 19, the aperture end of bell jar 23 with annular groove 22 communicates with each other, the aperture end of bell jar 23 with cooling ring groove 19 communicates with each other.
Wherein, the tapered slot 23 is provided with a plurality of channels. Preferably, the tapered slots 23 are provided with two channels, and the two channels of tapered slots 23 are symmetrically arranged.
The die pad 5 is integrally formed, and the upper die pad 50 and the lower die pad 51 are combined together to form the die pad 5.
The die pad 5 is integrally formed, so that liquid nitrogen can have a better cooling effect, and the surface quality of the formed aluminum profile is guaranteed.
Example three:
the utility model provides a liquid nitrogen cooling device for aluminum alloy extrusion die, includes extrusion die 1, aluminium alloy 2, bed die 3, bottom plate 4, die cushion 5, under bracing 6, one-level bed die 7, second grade bed die 8, bed die support 9, second grade bed die 10, one-level bed die 11, liquid nitrogen shower nozzle 12, hose 13, liquid nitrogen jar support 14, liquid nitrogen jar 15, crossbeam support 16, an upper fixed plate 17, go up mould 18 and cooling ring groove 19, die cushion 5 divide into bed die 50 and bed die 51 down, liquid nitrogen jar 15 passes through liquid nitrogen jar support 14 fixes on crossbeam support 16, hose 13 one end with liquid nitrogen jar 15 is connected, the hose 13 other end with liquid nitrogen shower nozzle 12 is connected, be equipped with first passageway 20 in the bed die 17, liquid nitrogen shower nozzle 12 install in the bed die 17 and with first passageway 20 sealing connection, the upper die 18 is installed at the lower end of the upper fixing plate 17, the lower die 3 is installed at the upper end of the lower fixing plate 4, the lower fixing plate 4 and the first-level lower padding plate 7 are fixedly installed on the lower support 6, the second-level lower padding plate 8 and the second-level upper padding plate 10 are installed on the lower padding plate support 9, one end of the first-level upper padding plate 11 is connected with the upper fixing plate 17, the other end of the first-level upper padding plate 11 is connected with the second-level upper padding plate 10, the upper die pad 50 is installed at the lower end of the upper fixing plate 17 and is positioned between the first-level upper padding plate 11 and the upper die 18, the lower die pad 51 is installed at the upper end of the lower fixing plate 4 and is positioned between the first-level lower padding plate 7 and the lower die 3, the aluminum profile 2 is installed in the extrusion die 1, and the upper die pad 50 and the, go up to be equipped with second passageway 21 in the die pad 50, die pad 5 is equipped with annular groove 22 along the circumferencial direction, second passageway 21 one end with first passageway 20 communicates with each other, second passageway 21 the other end with annular groove 22 communicates with each other, be equipped with bell jar 23 between annular groove 22 and the cooling ring groove 19, the aperture end of bell jar 23 with annular groove 22 communicates with each other, the aperture end of bell jar 23 with cooling ring groove 19 communicates with each other.
Wherein, the tapered slot 23 is provided with a plurality of channels. Preferably, the tapered slots 23 are provided with two channels, and the two channels of tapered slots 23 are symmetrically arranged.
The die pad 5 is integrally formed, and the upper die pad 50 and the lower die pad 51 are combined together to form the die pad 5.
The die pad 5 is integrally formed, so that liquid nitrogen can have a better cooling effect, and the surface quality of the formed aluminum profile is guaranteed.
The large-aperture end of the tapered groove 23 is in arc transition with the cooling ring groove 19. The large-aperture end of the conical groove 23 is in arc transition with the cooling ring groove 19, and after liquid nitrogen enters the conical groove 23 from the annular groove 22, the liquid nitrogen can be rapidly and uniformly dispersed into the cooling ring groove 19, so that the oxidation of the formed aluminum profile is better prevented, and the surface quality of the formed aluminum profile is better ensured.
To sum up, the utility model discloses a liquid nitrogen cooling device for aluminum alloy extrusion die, it gains beneficial technological effect and includes:
1. the liquid nitrogen cooling device for the aluminum alloy extrusion die can effectively prevent the oxidation problem in the aluminum profile extrusion process, maintain the temperature of the upper die and the lower die at a lower level, improve the service life of the die, refine the crystal grain structure after the aluminum profile is formed and improve the strength and rigidity performance of the aluminum profile;
2. the utility model has simple structure, good market prospect, good finished product quality, high precision, wide product range and long service life;
3. the die pad is integrally formed, so that liquid nitrogen can have a better cooling effect, and the surface quality of the formed aluminum profile is ensured;
4. the large-aperture end of the conical groove is in arc transition with the cooling ring groove, and after liquid nitrogen enters the conical groove from the annular groove, the liquid nitrogen can be rapidly and uniformly dispersed into the cooling ring groove, so that the oxidation of the formed aluminum profile is better prevented, and the surface quality of the formed aluminum profile is better ensured.
Although the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. That is, the methods, systems, and devices discussed above are examples. Various configurations may omit, substitute, or add various procedures or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different than that described, and/or various components may be added, omitted, and/or combined. Moreover, features described with respect to certain configurations may be combined in various other configurations, as different aspects and elements of the configurations may be combined in a similar manner. Further, elements therein may be updated as technology evolves, i.e., many elements are examples and do not limit the scope of the disclosure or claims.
Specific details are given in the description to provide a thorough understanding of the exemplary configurations including implementations. However, configurations may be practiced without these specific details, e.g., well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail in order to avoid obscuring the configurations. This description provides example configurations only, and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.
It is intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that it is the following claims, including all equivalents, that are intended to define the spirit and scope of this invention. The above examples are to be understood as merely illustrative of the present invention and not as limiting the scope of the invention. After reading the description of the present invention, the skilled person can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope of the present invention defined by the claims.
Claims (4)
1. The utility model provides a liquid nitrogen cooling device for aluminum alloy extrusion die, its characterized in that, including extrusion die, aluminium alloy, bed die, bottom plate, die cushion, under bracing, one-level bottom plate, second grade bottom plate, bed plate support, second grade upper padding plate, one-level upper padding plate, liquid nitrogen shower nozzle, hose, liquid nitrogen jar support, liquid nitrogen jar, crossbeam support, an upper fixed plate, go up mould and cooling ring groove, the die cushion divide into upper die cushion and bed die cushion, the liquid nitrogen jar passes through liquid nitrogen jar support is fixed on the crossbeam supports, hose one end with the liquid nitrogen jar is connected, the hose other end with the liquid nitrogen shower nozzle is connected, be equipped with first passageway in the upper fixed plate, liquid nitrogen shower nozzle install in the upper fixed plate and with first passageway sealing connection, go up the mould install in the lower extreme of upper fixed plate, the lower die is arranged at the upper end of the lower fixed plate, the lower fixed plate and the first-level lower backing plate are fixedly arranged on the lower support, the second-level lower backing plate and the second-level upper backing plate are arranged on the lower backing plate, one end of the first-level upper backing plate is connected with the upper fixed plate, the other end of the first-level upper backing plate is connected with the second-level upper backing plate, the upper die pad is arranged at the lower end of the upper fixed plate and is positioned between the first-level upper backing plate and the upper die, the lower die pad is arranged at the upper end of the lower fixed plate and is positioned between the first-level lower backing plate and the lower die, the aluminum profile is arranged in the extrusion die, a cooling ring groove is formed between the upper die pad and the lower die pad, a second channel is arranged in the upper die pad, a ring groove is arranged on the die pad along the circumferential direction, one, the other end of the second channel is communicated with the annular groove, a conical groove is arranged between the annular groove and the cooling ring groove, the small-bore end of the conical groove is communicated with the annular groove, and the large-bore end of the conical groove is communicated with the cooling ring groove.
2. The liquid nitrogen cooling device for the aluminum alloy extrusion die as recited in claim 1, wherein there are two conical grooves, and the two conical grooves are symmetrically arranged.
3. The liquid nitrogen cooling device for the aluminum alloy extrusion die as recited in claim 2, wherein the large-aperture end of the tapered groove is in arc transition with the cooling ring groove.
4. The liquid nitrogen cooling device for the aluminum alloy extrusion die as recited in claim 3, wherein the die pad is integrally formed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921856981.4U CN211888460U (en) | 2019-10-31 | 2019-10-31 | Liquid nitrogen cooling device for aluminum alloy extrusion die |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921856981.4U CN211888460U (en) | 2019-10-31 | 2019-10-31 | Liquid nitrogen cooling device for aluminum alloy extrusion die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115673022A (en) * | 2022-11-11 | 2023-02-03 | 无锡爱思科仪器有限公司 | Liquid nitrogen cooling constant-temperature extrusion device for mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115673022A (en) * | 2022-11-11 | 2023-02-03 | 无锡爱思科仪器有限公司 | Liquid nitrogen cooling constant-temperature extrusion device for mold |
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Address after: 511517 No. 12, Yinying Road, Yuantan Town, Qingcheng District, Qingyuan City, Guangdong Province Patentee after: Guangdong Haomei Precision Manufacturing Co.,Ltd. Country or region after: China Address before: 511533 No.12 Yinying Road, Yuantan Town, Qingcheng District, Qingyuan City, Guangdong Province Patentee before: GUANGDONG JINGMEI SPECIAL PROFILE Co.,Ltd. Country or region before: China |