CN210730949U - Low pressure casting mould exhaust structure - Google Patents
Low pressure casting mould exhaust structure Download PDFInfo
- Publication number
- CN210730949U CN210730949U CN201920728451.5U CN201920728451U CN210730949U CN 210730949 U CN210730949 U CN 210730949U CN 201920728451 U CN201920728451 U CN 201920728451U CN 210730949 U CN210730949 U CN 210730949U
- Authority
- CN
- China
- Prior art keywords
- ejector rod
- pressure casting
- exhaust structure
- die
- low pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005266 casting Methods 0.000 title claims abstract description 30
- 238000009966 trimming Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 3
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 230000007547 defect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003670 easy-to-clean Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 101100008047 Caenorhabditis elegans cut-3 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a low-pressure casting die exhaust structure, which comprises a ejector rod plate, an ejector rod and a die; one end of the ejector rod is fixed with the ejector rod plate, and the other end of the ejector rod is inserted into the hole of the die and can move up and down under the driving of the ejector rod plate; the method is characterized in that: and a gap of 0.06-0.1 mm is arranged between the outer wall of the ejector rod and the inner wall of the hole. The utility model has the advantages that: the utility model uses the clearance between the outer wall of the mandril and the hole to replace the vent plug to achieve the purpose of exhausting; meanwhile, a plurality of trimming edges are arranged at one end of the ejector rod, so that a better exhaust effect is achieved. Therefore, the casting defect caused by the air-out of the cavity due to the blockage of the vent plug is avoided, and the ejector rod is easy to clean.
Description
Technical Field
The utility model relates to a low pressure casting technical field specifically is applied to exhaust structure in the low pressure casting mould.
Background
The low-pressure casting die generally comprises an upper die and a lower die, when the die is opened after casting is finished, the casting is attached to the upper die and taken out, and then the casting is ejected out by the ejector rod of the upper die. Therefore, the ejector pin device is an indispensable auxiliary ejector device installed on the low-pressure casting upper die. At present, most of the traditional steel materials are adopted, the functions and functions are single, and the function requirements of other aspects are not considered. The clearance between the outer wall of the ejector rod of the low-pressure casting die and the inner wall of the hole inserted into the die in the prior art is generally larger than 0.1mm and smaller than 0.5 mm.
In addition, in the existing low-pressure casting technology, most of the low-pressure casting technologies utilize an exhaust plug to exhaust, the exhaust plug is easily blocked by molten metal in the casting process, and the phenomenon of poor exhaust of a mold occurs, so that the casting is easily subjected to the defects of air holes, insufficient casting and the like.
SUMMERY OF THE UTILITY MODEL
To the bad problem of mould exhaust that the background art exists, the utility model aims to provide a smooth low pressure casting mould exhaust structure exhausts.
In order to achieve the aim, the utility model relates to a low-pressure casting die exhaust structure, which comprises a ejector rod plate, an ejector rod and a die; one end of the ejector rod is fixed with the ejector rod plate, and the other end of the ejector rod is inserted into the hole of the die and can move up and down under the driving of the ejector rod plate; the method is characterized in that: and a gap of 0.06-0.1 mm is arranged between the outer wall of the ejector rod and the inner wall of the hole.
Preferably, when the ejector rod is at the position with the temperature of 430-480 ℃, the range of the gap is 0.06-0.08 mm.
Preferably, when the ejector rod is located at the position with the temperature of 300-360 ℃, the range of the gap is 0.08-0.1 mm.
In order to further improve the exhaust effect and reduce the casting defect caused by suffocation, the outer wall of the ejector rod is trimmed.
Preferably, the outer wall of the ejector rod is provided with a plurality of cutting edges which are from the end face of one end of the insertion hole to the other end of the insertion hole and along the axial direction of the ejector rod.
Further preferably, when the distance between the ejector plate and the die is the largest, the length of the cut edge exposed out of the top surface of the die is 8-12 mm.
Further preferably, the width of the cutting edge is 0.2-0.3 mm.
Further preferably, a plurality of cutting edges are uniformly distributed at intervals in the axial direction of the ejector rod.
The utility model has the advantages that: the utility model uses the clearance between the outer wall of the mandril and the hole to replace the vent plug to achieve the purpose of exhausting; meanwhile, a plurality of trimming edges are arranged at one end of the ejector rod, so that a better exhaust effect is achieved. Therefore, the casting defect caused by the air-out of the cavity due to the blockage of the vent plug is avoided, and the ejector rod is easy to clean.
Drawings
Fig. 1 is a schematic perspective view of the present invention, wherein the ejector plate is not shown;
FIG. 2 is a schematic structural view of the ejector rod of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
in the figure: ejector pin 1 (ejector pin 1a, ejector pin 1b), mould 2, side cut 3, mould top surface 4.
Detailed Description
The technical solutions of the present invention (including the preferred ones) are further described in detail by way of fig. 1 to 3 and enumerating some alternative embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the exhaust structure of the low-pressure casting mold of the present invention comprises a top rod plate, a top rod 1 and a mold 2; one end of the ejector rod 1 is fixed with the ejector rod plate, and the other end of the ejector rod 1 is inserted into the hole of the die 2 and can move up and down under the driving of the ejector rod plate; a gap of 0.06-0.1 mm is arranged between the outer wall of the ejector rod 1 and the inner wall of the hole.
Preferably, when the ejector pin 1a is at a position with a temperature of 430 to 480 ℃, the ejector pin is located in a region around the gate in the embodiment, and the range of the gap is 0.06 to 0.08 mm. When the ejector rod 1b is located at a position with the temperature of 300-360 ℃, the ejector rod is located in the upper flange area in the embodiment, and the range of the gap is 0.08-0.1 mm. The label "1 b" in fig. 2 is the full indicator mark, which should be all other ejector pins out of the label "1 a".
As shown in fig. 2 and 3, in order to further improve the exhaust effect and reduce the casting defects caused by air blocking, the outer wall of the ejector rod is trimmed. The outer wall of the ejector rod 1 is provided with a plurality of cutting edges 3 which are from the end face of one end of the insertion hole to the other end and along the axial direction of the ejector rod. The broken line in fig. 2 is the die top surface 4, and the broken line in fig. 3 is the outer diameter of the ejector pin 1 shown for better embodying the cut surface 3.
Preferably, when the distance between the ejector plate and the die is the largest, the length L of the cut edge 3 exposed out of the top surface 4 of the die ranges from 8mm to L12 mm, and in the embodiment, L is 10 mm.
Preferably, the width m of the cut edge ranges from 0.2mm to 0.3mm, and in this embodiment, m is 0.25 mm.
Preferably, a plurality of the cutting edges 3 are uniformly distributed at intervals in the axial direction of the ejector rod 1, and six cutting edges are arranged in the embodiment.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and any modification, combination, replacement, or improvement made within the spirit and principle of the present invention is included in the scope of the present invention.
Claims (7)
1. A low-pressure casting die exhaust structure comprises a mandril plate, a mandril and a die; one end of the ejector rod is fixed with the ejector rod plate, and the other end of the ejector rod is inserted into the hole of the die and can move up and down under the driving of the ejector rod plate; the method is characterized in that: and a gap of 0.06-0.1 mm is arranged between the outer wall of the ejector rod and the inner wall of the hole.
2. The low pressure casting die exhaust structure according to claim 1, wherein: when the ejector rod is located at the position with the temperature of 430-480 ℃, the range of the gap is 0.06-0.08 mm.
3. The low pressure casting die exhaust structure according to claim 1, wherein: when the ejector rod is located at the position with the temperature of 300-360 ℃, the range of the gap is 0.08-0.1 mm.
4. The low pressure casting die exhaust structure according to any one of claims 1 to 3, wherein: the outer wall of the ejector rod is provided with a plurality of trimming edges which are from the end face of one end of the insertion hole to the other end of the insertion hole and are along the axial direction of the ejector rod.
5. The low pressure casting die exhaust structure according to claim 4, wherein: when the distance between the ejector rod plate and the die is the largest, the length of the trimming edge exposed out of the top surface of the die is 8-12 mm.
6. The low pressure casting die exhaust structure according to claim 4, wherein: the width of the trimming edge is 0.2-0.3 mm.
7. The low pressure casting die exhaust structure according to claim 5 or 6, wherein: and multiple cutting edges are uniformly distributed at intervals in the axial direction of the ejector rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920728451.5U CN210730949U (en) | 2019-05-20 | 2019-05-20 | Low pressure casting mould exhaust structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920728451.5U CN210730949U (en) | 2019-05-20 | 2019-05-20 | Low pressure casting mould exhaust structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210730949U true CN210730949U (en) | 2020-06-12 |
Family
ID=70986632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920728451.5U Expired - Fee Related CN210730949U (en) | 2019-05-20 | 2019-05-20 | Low pressure casting mould exhaust structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210730949U (en) |
-
2019
- 2019-05-20 CN CN201920728451.5U patent/CN210730949U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210730949U (en) | Low pressure casting mould exhaust structure | |
| CN208230640U (en) | A kind of punching press progressive die cuts into type structure | |
| CN210937014U (en) | Mold core with exhaust duct | |
| KR101312344B1 (en) | Tire vulcanization mold | |
| CN217346510U (en) | Improve mould structure of stranded gas defect | |
| CN210475481U (en) | Die casting die of heat dissipation lamp shade | |
| CN210705557U (en) | Internal annular groove exhaust structure for ensuring product quality | |
| CN205767108U (en) | The thimble of casting mold and casting mold | |
| CN209773431U (en) | Thimble exhaust structure | |
| CN213671724U (en) | Molding die with exhaust channel | |
| CN210617270U (en) | Quick fashioned bottle blowing mould | |
| CN207806363U (en) | A kind of edge of a knife anti-tripping waste mold | |
| CN204817922U (en) | Metal die | |
| CN207874758U (en) | A kind of silica gel mould exhaust structure | |
| CN207756876U (en) | A kind of double mould cavity upper mold cored structure for die casting | |
| CN220095221U (en) | Exhaust system of optical mould | |
| CN208050845U (en) | Forging mold with the anti-bending protection mechanism of mandril | |
| CN208514886U (en) | A kind of depth chamber product mold core pulling exhaust cooling device | |
| CN207082587U (en) | A kind of bee-hole sealing structure | |
| CN212419593U (en) | Novel grid die structure | |
| CN210676893U (en) | Die casting die with vacuumizing function | |
| CN217412415U (en) | Casting device for machining deep hole castings | |
| CN104842522B (en) | Manufacturing mold for front baffle of gasoline chainsaw | |
| CN210755073U (en) | High vacuum mould | |
| CN212094238U (en) | Local reinforced exhaust structure of large casting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211210 Address after: 442020 No. 115, Checheng West Road, Shiyan City, Hubei Province Patentee after: General casting and Forging Branch of Dongfeng auto parts (Group) Co.,Ltd. Patentee after: DONGFENG MOTER Co.,Ltd. Address before: 430056 No. 10 Dongfeng Avenue, Wuhan economic and Technological Development Zone, Wuhan, Hubei Patentee before: DONGFENG MOTER Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200612 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |