CN110961597A - Extrusion casting drift cooling device - Google Patents
Extrusion casting drift cooling device Download PDFInfo
- Publication number
- CN110961597A CN110961597A CN201911356393.9A CN201911356393A CN110961597A CN 110961597 A CN110961597 A CN 110961597A CN 201911356393 A CN201911356393 A CN 201911356393A CN 110961597 A CN110961597 A CN 110961597A
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- Prior art keywords
- punch
- heat pipe
- hole
- lower punch
- cooling device
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- 238000005266 casting Methods 0.000 title claims abstract description 24
- 238000001816 cooling Methods 0.000 title claims abstract description 24
- 238000001125 extrusion Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000001704 evaporation Methods 0.000 claims abstract description 21
- 238000009833 condensation Methods 0.000 claims abstract description 18
- 230000005494 condensation Effects 0.000 claims abstract description 18
- 230000008020 evaporation Effects 0.000 claims abstract description 16
- 238000003860 storage Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000009716 squeeze casting Methods 0.000 claims 5
- 239000000498 cooling water Substances 0.000 abstract description 16
- 230000005855 radiation Effects 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 3
- -1 meanwhile Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a cooling device for an extrusion casting punch, which comprises an upper punch, a lower punch, a heat pipe and a push rod, wherein the upper punch and the lower punch are coaxially arranged, a water storage area is formed between the upper punch and the lower punch, the push rod is arranged at the lower part of the lower punch, the evaporation end of the heat pipe is arranged in the upper punch, and the condensation end of the heat pipe is positioned in the lower punch. The invention utilizes the extremely strong heat radiation performance of the heat pipe, the heat of the upper punch is rapidly transmitted to the outside of the heat pipe through the heat pipe, the heat conduction capability of the heat pipe exceeds the heat conduction capability of any known metal, meanwhile, cooling water is introduced into the upper punch to accelerate the cooling of the upper punch, the water outlet and the water inlet are arranged, the aperture size is controlled, cold water leakage is effectively avoided, the cooling time is saved, uniform heat radiation is facilitated, the temperature of the punch is effectively controlled, and the stability of extrusion casting is greatly improved.
Description
Technical Field
The invention relates to the technical field of extrusion casting equipment, in particular to an extrusion casting punch cooling device.
Background
The extrusion casting equipment is key equipment for realizing the extrusion casting process and ensuring the forming quality of parts. The injection mechanism is a core component of extrusion casting equipment, is an important device for pushing molten metal into a die cavity and carrying out pressure maintaining forming, directly influences the forming quality of a casting, and mainly comprises a pressure chamber, a punch and a push rod. In the continuous production process, in order to ensure the quality of products and the stability of the casting process, the clearance between a pressing chamber and a punch must be controlled within a reasonable range, the key is to control the expansion amount of a punch part in a mechanism due to high temperature and high pressure, and the most effective method is to reduce the temperature of the punch. In the extrusion casting process, the punch works under the working condition of high temperature and high pressure, and is in a closed limited space, and a human body cannot approach the extrusion casting equipment, so the improvement of the punch structure is the simplest and direct method.
The existing cooling method for the punch component is less, and mainly adopts a method of introducing water into the interior of the punch to realize cooling, and although the method is simple to operate, the method has the following obvious defects and shortcomings:
firstly, the temperature of the axis of the punch is low, and the temperature of the periphery of the punch is high, so that the punch is easy to be uneven in cold and hot, and the service life of the punch is reduced;
and secondly, the water supply process is controlled by personnel in real time in the extrusion casting process, only one water channel is provided, water supply can be stopped after water supply, cold water can be waited to flow out completely, the next water supply can be carried out, the efficiency is reduced, certain risk exists, and certain influence is caused on the stability of the injection process.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a device for controlling the temperature of an extrusion casting punch part, which is safe and reliable, convenient to use and maintain and capable of effectively controlling the temperature, so that the stability of equipment is ensured.
The technical scheme of the invention is as follows: the cooling device for the punch of the extrusion casting comprises an upper punch, a lower punch, a heat pipe and a push rod, wherein the upper punch and the lower punch are coaxially arranged, a water storage area is formed between the upper punch and the lower punch, the push rod is arranged at the lower part of the lower punch, the evaporation end of the heat pipe is arranged in the upper punch, and the condensation end of the heat pipe is positioned in the lower punch. The heat pipe is a heat transfer element, has excellent super-heat conductivity, and can conduct heat of the punch, the lower punch can effectively support the upper punch, and the push rod can push the upper punch and the lower punch to move up and down.
The lower punch is internally provided with a water inlet hole and a water outlet hole which are communicated with the water storage area, the water inlet hole is positioned at the center of the upper part of the lower punch, and the water inlet hole to the water outlet hole are downward inclined planes on the end surface of the lower punch forming the water storage area. Wherein, adopt this structure, the up end of lower punch is middle height, low structure all around, and the apopore distributes around the inlet opening, does benefit to the downward apopore that flows to of cooling water, the circulation of the cooling water of being convenient for.
The upper punch is internally provided with a cylindrical deep hole for installing the evaporation end of the heat pipe, the evaporation end of the heat pipe is in transition fit with the deep hole, and the bottom of the lower punch is provided with a groove for fixing the condensation end of the heat pipe. The evaporation end of the heat pipe is in contact with the upper punch, the condensation end of the heat pipe is in contact with the groove, the groove is close to the hole wall of the water outlet hole, the energy of the heat pipe is convenient to transfer to the water outlet hole, and heat can be effectively dissipated.
The outer side wall of the lower punch is axially and hermetically connected with the inner side wall of the upper punch. By adopting the structure, water leakage can be effectively avoided.
The lower center of the lower punch is provided with a threaded hole, the outer side wall of the push rod is provided with an external thread matched with the threaded hole, and the lower punch is in threaded sealing connection with the push rod. By adopting the structure, water leakage can be effectively avoided.
The center of the push rod is provided with a through hole communicated with the water inlet hole, the push rod is further provided with a chute inclined downwards, and the chute corresponds to the position of the water outlet hole. Wherein, outside cooling water passes through the through-hole and flows to the inlet opening, and reentrant water storage cavity has absorbed thermal cooling water and has flowed out from the apopore, and the flow direction chute, chute are favorable to the cooling water to slowly flow out.
The tip of the evaporating terminal of heat pipe and the condensation end of heat pipe is the taper shape, and the evaporating terminal absorbs the heat of last drift and conducts the condensation end, and the cell wall of the recess of fixed condensation end is at most 3mm with the distance of the pore wall of apopore to the heat of the condensation end of heat pipe is taken away to the cooling water of apopore, improves the radiating effect.
The distance between the axis of the deep hole and the axis of the upper punch is 5/7-4/5 of the radius of the end face of the upper punch, and the radius of the deep hole is 1/14-1/8 of the radius of the end face of the upper punch.
The radius of the water inlet hole is 1/6-1/4 of the radius of the upper end face of the lower punch, and the radius of the water outlet hole is 1/9-1/8 of the radius of the upper end face of the lower punch.
The aperture of the through hole of the push rod is not smaller than that of the water inlet hole, and the diameter of the inclined groove is not smaller than that of the water outlet hole. By adopting the structure, the leakage of cooling water can be effectively avoided.
Compared with the prior art, the invention has the following beneficial effects:
the invention takes the heat pipe as the direct heat transfer medium, greatly improves the heat dissipation efficiency and better controls the working temperature of the punch; the heat pipe is utilized to dissipate heat, and simultaneously, cooling water is introduced to cool the temperature of the punch, so that the temperature of the punch is greatly reduced.
The position of the heat pipe is reasonably set, the evaporation end of the heat pipe is arranged on the upper punch, the condensation end of the heat pipe is arranged on the lower punch and is adjacent to the water outlet hole, and the uniform heat dissipation of the punches can be further ensured; the central point of lower punch is the inlet opening, and the lower punch is the apopore all around, guarantees that the lower punch evenly dispels the heat, and inlet opening and apopore can lead to water in succession, have improved the radiating efficiency.
The punch cooling device has a reasonable structure, is convenient to mount and dismount, effectively controls the conditions of water flow impact, cold water leakage and the like by methods of controlling the aperture size, arranging the inclined plane and the like, enables the whole process to be stably carried out, does not need manual operation and approach to equipment in the whole process, effectively ensures the personal safety, and reduces the labor cost.
Drawings
Fig. 1 is a schematic structural view of the extrusion casting punch cooling device.
Fig. 2 is a cross-sectional view of the upper punch.
Fig. 3 is a cross-sectional view of the lower punch.
Fig. 4 is a cross-sectional view of the push rod.
Fig. 5 is a sectional view of a heat pipe.
In the figure, 1 is an upper punch, 2 is a lower punch, 3 is a heat pipe, 4 is a push rod, 5 is a deep hole, 6 is a water storage area, 7 is a water inlet, 8 is a water outlet, 9 is a groove, 10 is a through hole, 11 is an evaporation end of the heat pipe, 12 is a condensation end of the heat pipe, 13 is an inclined plane, and 14 is an inclined groove.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Examples
The cooling device for the extrusion casting punch comprises an upper punch 1, a lower punch 2, a heat pipe 3 and a push rod 4, wherein the upper punch and the lower punch are coaxially installed, a water storage area 6 is formed between the upper punch and the lower punch, the push rod is installed at the lower part of the lower punch, an evaporation end of the heat pipe is installed in the upper punch, a condensation end of the heat pipe is located in the lower punch, the heat pipe is a heat transfer element and has excellent super heat conductivity, the heat of the punches is conducted out, the evaporation end of the heat pipe absorbs the heat of the upper punch and conducts the heat to the lower punch to dissipate the heat, the lower punch can effectively support the upper punch, and the push rod can push the upper punch and the lower punch to move up and down. In order to ensure the sealing performance and avoid water leakage, the outer side wall of the lower punch is axially and hermetically connected with the inner side wall of the upper punch, a threaded hole is formed in the center of the lower part of the lower punch, an external thread matched with the threaded hole is formed in the outer side wall of the push rod, and the lower punch is in threaded and hermetically connected with the push rod.
As shown in fig. 2 and 3, a cylindrical deep hole 5 for installing the evaporation end of the heat pipe is arranged in the upper punch, the evaporation end of the heat pipe is in transition fit with the deep hole, a groove 9 for fixing the condensation end of the heat pipe is arranged at the bottom of the lower punch, the deep hole corresponds to the groove in position, and after the upper punch and the lower punch are installed, the deep hole and the groove are in tight fit. The evaporating end of the heat pipe is contacted with the upper punch, the condensing end of the heat pipe is contacted with the groove, and the groove is tightly close to the hole wall of the water outlet hole, so that the energy of the heat pipe can be conveniently transferred to the water outlet hole, and the heat dissipation efficiency can be improved.
As shown in fig. 3, be equipped with in the lower punch with deposit the inlet opening 7 and the apopore 8 of water territory intercommunication, the inlet opening is located the upper portion center department of lower punch, on the terminal surface in the water territory is deposited in the formation of lower punch, inlet opening to apopore are decurrent inclined plane 13, the up end of lower punch is middle height, low structure all around, the apopore distributes around the inlet opening, does benefit to the downward flow direction apopore of cooling water, the circulation of the cooling water of being convenient for.
As shown in fig. 4, the center department of push rod is equipped with the through-hole 10 with the inlet opening intercommunication, still is equipped with the chute 14 of downward sloping on the push rod, and the chute corresponds with the position of apopore, and outside cooling water passes through-hole flow direction inlet opening, and reentrant water storage cavity has absorbed thermal cooling water and has flowed out from the apopore, flow direction chute, and the chute is favorable to the cooling water to slowly flow out.
As shown in fig. 5, the evaporation end 11 of the heat pipe and the condensation end 12 of the heat pipe are both conical, the evaporation end absorbs the heat of the upper punch and conducts the heat to the condensation end, the groove for fixing the condensation end is tightly close to the water outlet hole for heat dissipation, so that the heat at the condensation end of the heat pipe can be taken away through the water outlet hole.
The distance between the axis of the deep hole and the axis of the upper punch is 4/5 of the radius of the end face of the upper punch, and the radius of the deep hole is 1/8 of the radius of the end face of the upper punch. The radius of the water inlet hole is 1/6 of the radius of the upper end face of the lower punch, and the radius of the water outlet hole is 1/9 of the radius of the upper end face of the lower punch. The aperture of the through hole of the push rod is not smaller than that of the water inlet hole, and the diameter of the inclined groove is not smaller than that of the water outlet hole. By adopting the structure, the leakage of cooling water in the flowing process can be effectively avoided.
The invention utilizes the extremely strong heat radiation performance of the heat pipe, the heat of the upper punch is rapidly transmitted to the outside of the heat pipe through the heat pipe, the heat conduction capability of the heat pipe exceeds the heat conduction capability of any known metal, meanwhile, cooling water is introduced into the upper punch to accelerate the cooling of the upper punch, the water outlet and the water inlet are arranged, the aperture size is controlled, the cold water leakage is effectively avoided, the cooling time is saved, the uniform heat radiation is facilitated, the temperature of the punch is effectively controlled, and the stability of extrusion casting is greatly improved.
As mentioned above, the present invention can be better realized, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present disclosure are intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. The cooling device for the extrusion casting punch is characterized by comprising an upper punch, a lower punch, a heat pipe and a push rod, wherein the upper punch and the lower punch are coaxially arranged, a water storage area is formed between the upper punch and the lower punch, the push rod is arranged at the lower part of the lower punch, the evaporation end of the heat pipe is arranged in the upper punch, and the condensation end of the heat pipe is positioned in the lower punch.
2. The extrusion casting punch cooling device according to claim 1, wherein the lower punch is provided therein with a water inlet hole and a water outlet hole communicating with the water storage region, the water inlet hole being located at an upper center of the lower punch, and the water inlet hole to the water outlet hole being inclined downward on an end surface of the lower punch forming the water storage region.
3. The squeeze casting punch cooling device as claimed in claim 1, wherein the upper punch is provided therein with a cylindrical deep hole for installing the evaporation end of the heat pipe, the evaporation end of the heat pipe is in transition fit with the deep hole, and the bottom of the lower punch is provided with a groove for fixing the condensation end of the heat pipe.
4. The extrusion casting punch cooling apparatus of claim 1, wherein the outer sidewall of the lower punch is axially sealingly connected to the inner sidewall of the upper punch.
5. The extrusion casting punch cooling device as claimed in claim 1, wherein a threaded hole is formed at the center of the lower portion of the lower punch, an external thread matching with the threaded hole is formed on the outer side wall of the push rod, and the lower punch is in threaded sealing connection with the push rod.
6. The squeeze casting punch cooling device as claimed in claim 2, wherein the push rod has a through hole at its center communicating with the water inlet hole, and a downwardly inclined chute corresponding to the position of the water outlet hole.
7. The squeeze casting punch cooling device according to claim 3, wherein the evaporating end of the heat pipe and the condensing end of the heat pipe are both conical, the evaporating end absorbs heat from the upper punch and conducts the heat to the condensing end, and the distance between the wall of the groove for fixing the condensing end and the wall of the hole for the outlet hole is at most 3 mm.
8. The squeeze casting punch cooling device as claimed in claim 3, wherein the distance between the axis of the deep hole and the axis of the upper punch is 5/7-4/5 of the radius of the end face of the upper punch, and the radius of the deep hole is 1/14-1/8 of the radius of the end face of the upper punch.
9. The extrusion casting punch cooling device of claim 2, wherein the radius of the water inlet hole is 1/6-1/4 of the radius of the upper end face of the lower punch, and the radius of the water outlet hole is 1/9-1/8 of the radius of the upper end face of the lower punch.
10. The squeeze casting punch cooling device as claimed in claim 6, wherein the diameter of the through hole of the push rod is not smaller than the diameter of the water inlet hole, and the diameter of the chute is not smaller than the diameter of the water outlet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911356393.9A CN110961597A (en) | 2019-12-25 | 2019-12-25 | Extrusion casting drift cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911356393.9A CN110961597A (en) | 2019-12-25 | 2019-12-25 | Extrusion casting drift cooling device |
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| Publication Number | Publication Date |
|---|---|
| CN110961597A true CN110961597A (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911356393.9A Pending CN110961597A (en) | 2019-12-25 | 2019-12-25 | Extrusion casting drift cooling device |
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| Country | Link |
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| CN (1) | CN110961597A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453179A (en) * | 2020-12-11 | 2021-03-09 | 重庆鑫仁瑞五金制品有限公司 | Novel punching mechanism of punch press |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0539744U (en) * | 1991-10-18 | 1993-05-28 | 曙ブレーキ工業株式会社 | Hot mold water cooling system |
| JP2003152156A (en) * | 2001-11-15 | 2003-05-23 | Hitachi Cable Ltd | Film affixing device |
| CN201592241U (en) * | 2010-01-11 | 2010-09-29 | 美诺精密压铸(上海)有限公司 | Die casting punch system |
| CN208214266U (en) * | 2018-05-28 | 2018-12-11 | 江西东磊精密铸造有限公司 | A kind of die casting machine injection bar cooling system |
| CN211758390U (en) * | 2019-12-25 | 2020-10-27 | 华南理工大学 | Extrusion casting drift cooling device |
-
2019
- 2019-12-25 CN CN201911356393.9A patent/CN110961597A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0539744U (en) * | 1991-10-18 | 1993-05-28 | 曙ブレーキ工業株式会社 | Hot mold water cooling system |
| JP2003152156A (en) * | 2001-11-15 | 2003-05-23 | Hitachi Cable Ltd | Film affixing device |
| CN201592241U (en) * | 2010-01-11 | 2010-09-29 | 美诺精密压铸(上海)有限公司 | Die casting punch system |
| CN208214266U (en) * | 2018-05-28 | 2018-12-11 | 江西东磊精密铸造有限公司 | A kind of die casting machine injection bar cooling system |
| CN211758390U (en) * | 2019-12-25 | 2020-10-27 | 华南理工大学 | Extrusion casting drift cooling device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453179A (en) * | 2020-12-11 | 2021-03-09 | 重庆鑫仁瑞五金制品有限公司 | Novel punching mechanism of punch press |
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