CN215431421U - Corrosion-resistant aluminum alloy casting shell with combined fixing structure - Google Patents
Corrosion-resistant aluminum alloy casting shell with combined fixing structure Download PDFInfo
- Publication number
- CN215431421U CN215431421U CN202121437305.0U CN202121437305U CN215431421U CN 215431421 U CN215431421 U CN 215431421U CN 202121437305 U CN202121437305 U CN 202121437305U CN 215431421 U CN215431421 U CN 215431421U
- Authority
- CN
- China
- Prior art keywords
- shell
- aluminum alloy
- casting
- corrosion
- mold
- 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.)
- Active
Links
Images
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model discloses a corrosion-resistant aluminum alloy casting shell with a combined fixed structure, which comprises a lower die shell and a demoulding device, wherein the lower die shell is made of an alloy material; further comprising: the casting die cavity is arranged on the outer side of the top of the lower die shell; a mold pillar connected to an inner medial end of the mold cavity. This first pneumatic cylinder of corrosion-resistant aluminum alloy casting casing and backup pad with combination fixed knot constructs, the push pedal adopts threaded connection, this makes first pneumatic cylinder link up backup pad and push pedal, and backup pad and push pedal are fixed respectively at last mould casing and lower mould shell surface, this makes the position of going up between mould casing and the lower mould casing can carry on spacingly, it is when laminating to go up mould casing and lower mould casing in addition, it can insert the fixed orifices inboard at lower mould casing top to go up the reference column of mould casing bottom, through the fixed orifices, reference column and backup pad, first pneumatic cylinder, the combination between the push pedal is fixed, can avoid the aluminium alloy casting in-process to take place the skew.
Description
Technical Field
The utility model relates to the technical field of aluminum alloy casting, in particular to a corrosion-resistant aluminum alloy casting shell with a combined fixing structure.
Background
The aluminum alloy part is an alloy which is based on aluminum and added with a certain amount of other alloying elements, is one of light metal materials, has good casting performance and plastic processing performance, simultaneously has good electric conduction and heat conduction performance, good corrosion resistance and weldability, can be used as a structural material, and is usually cast by using a die casting shell in the processing process.
The common aluminum alloy casting shell in the market is not accurate enough in positioning between an upper die shell and a lower die shell when casting and machining are carried out, the shape of a casting die cavity is prone to deflection, and the formed aluminum alloy piece cannot reach the size standard.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a corrosion-resistant aluminum alloy casting shell with a combined fixing structure, and aims to solve the problems that the positioning between an upper die shell and a lower die shell is not accurate enough, the shape of a casting die cavity is easy to deflect, and a formed aluminum alloy piece cannot reach the size standard when the aluminum alloy casting shell provided by the background art is subjected to casting die processing.
In order to achieve the purpose, the utility model provides the following technical scheme: a corrosion resistant aluminum alloy cast housing with a unitized fixture structure, comprising:
the lower die shell is made of alloy materials;
further comprising:
the casting die cavity is arranged on the outer side of the top of the lower die shell;
a mold pillar connected to an inner middle end of the mold cavity;
the fixing holes are formed in two sides of the top of the casting die cavity;
support plates disposed at both sides of the outside of the lower mold case;
the first hydraulic cylinder is arranged on the outer side of the top of the supporting plate;
the push plate is arranged on the outer side of the top of the first hydraulic cylinder;
an upper die housing disposed outside a top of the lower die housing;
the positioning column is connected to the outer side of the bottom of the upper die shell;
a demolding device connected to the inner side of the top of the upper mold shell;
a water inlet opening on the front outer side of the lower mold housing;
a cooling tube disposed at an inside surface of the mold pillar.
Preferably, the vertical center line of the lower die shell and the vertical center line of the die cavity are overlapped, and the die column and the lower die shell are of an integrated structure.
Preferably, the support plate and the lower die shell are connected in a welding mode, and the support plate and the first hydraulic cylinder are in threaded connection.
Preferably, the push plate forms a lifting structure through a first hydraulic cylinder, and the push plate is in welded connection with the upper die shell.
Preferably, the positioning column is fixedly connected with the upper die shell, and the vertical center line of the positioning column is overlapped with the vertical center line of the fixing hole.
Preferably, the demolding device includes:
the periphery of the outer side of the cover plate is provided with a die casting opening;
a second hydraulic cylinder connected to an outer side of a top of the cover plate;
a top plate disposed outside a top of the second hydraulic cylinder.
Preferably, the outer surface of the cover plate is attached to the inner surface of the upper die shell, and the casting die openings are symmetrically distributed along the vertical center line of the cover plate.
Preferably, the second hydraulic cylinder is in threaded connection with the covering plate, and the covering plate forms a lifting structure through the second hydraulic cylinder.
Preferably, the cooling pipe forms a communication structure through the water inlet, and the cooling pipe and the mold column form an integrated structure.
The utility model provides a corrosion-resistant aluminum alloy casting shell with a combined fixing structure, which has the following beneficial effects: this corrosion-resistant aluminum alloy casting casing with combination fixed knot constructs: through the fixed orifices, reference column and backup pad, first pneumatic cylinder, combination between the push pedal is fixed, can avoid taking place the offset among the aluminum alloy casting process, first pneumatic cylinder drives the push pedal and shifts up, it carries out ascending displacement to enable to go up the mould casing, and the lid plywood still covers the top of closing at shaping back aluminum alloy spare this moment, this makes and goes up the mould casing and can separate with the aluminum alloy spare at the in-process that shifts up, and second pneumatic cylinder drives the lid plywood and shifts up, it separates to enable aluminum alloy spare and lower mould casing, this makes the drawing of patterns of aluminum alloy spare can be facilitated fast, the clear water gets into behind the cooling tube inboard, can make the temperature decline of casting die post, this makes the casting die post can cool down the aluminum alloy spare, this makes the temperature of aluminum alloy spare can descend fast, this can reduce the cool time of aluminum alloy spare.
1. The first hydraulic cylinder is connected with the supporting plate and the push plate through threads, so that the supporting plate and the push plate can be connected through the first hydraulic cylinder, the supporting plate and the push plate are respectively fixed on the surfaces of the upper die shell and the lower die shell, the position between the upper die shell and the lower die shell can be limited, in addition, when the upper die shell and the lower die shell are attached, the positioning column at the bottom of the upper die shell can be inserted into the inner side of the fixing hole at the top of the lower die shell, and through the combined fixing among the fixing hole, the positioning column, the supporting plate, the first hydraulic cylinder and the push plate, the position deviation in the aluminum alloy casting process can be avoided, and the processing precision of equipment is favorably improved.
2. After the aluminum alloy part is formed, the first hydraulic cylinder drives the push plate to move upwards, so that the upper die shell can move upwards, the cover plate still covers the top of the formed aluminum alloy part, the upper die shell can be separated from the aluminum alloy part in the upwards moving process, the second hydraulic cylinder drives the cover plate to move upwards, the aluminum alloy part can be separated from the lower die shell, the cover plate continues to move upwards, the first hydraulic cylinder drives the upper die shell to move downwards to be attached to the lower die shell, the formed aluminum alloy part can be separated from the inner sides of the upper die shell and the lower die shell, and the aluminum alloy part can be quickly and conveniently demoulded.
3. According to the utility model, clear water is injected into the inner side of the water inlet, so that the clear water enters the inner side of the mold column, the mold column is positioned at the middle end of the inner side of the mold cavity, the mold column can be positioned at the middle end of the inner side of the formed aluminum alloy piece, and after the clear water enters the inner side of the cooling pipe, the temperature of the mold column is reduced, so that the mold column can cool the aluminum alloy piece, the temperature of the aluminum alloy piece can be rapidly reduced, the cooling time of the aluminum alloy piece can be reduced, and the processing efficiency of equipment can be improved.
Drawings
FIG. 1 is a schematic top view of an aluminum alloy casting having a corrosion resistant aluminum alloy casting shell with a modular fixture according to the present invention;
FIG. 2 is a schematic front view of an aluminum alloy casting having a corrosion resistant aluminum alloy casting shell with a modular fixture according to the present invention;
FIG. 3 is a schematic front view of an integral corrosion-resistant aluminum alloy cast housing with a modular fixture according to the present invention;
FIG. 4 is a schematic view of the lower mold shell structure of a corrosion-resistant aluminum alloy casting shell with a combined fixed structure according to the present invention;
FIG. 5 is a schematic structural diagram of a mold releasing device for a corrosion-resistant aluminum alloy casting shell with a combined fixing structure according to the present invention.
In the figure: 1. a lower die shell; 2. a casting die cavity; 3. casting a mold column; 4. a fixing hole; 5. a support plate; 6. a first hydraulic cylinder; 7. pushing the plate; 8. an upper die housing; 9. a positioning column; 10. a demolding device; 1001. covering the plywood; 1002. a die casting opening; 1003. a second hydraulic cylinder; 1004. a top plate; 11. a water inlet; 12. and (7) cooling the tube.
Detailed Description
As shown in fig. 3 and 4, a corrosion-resistant aluminum alloy cast shell having a combined fixed structure includes: lower mould casing 1, lower mould casing 1 adopts the alloy material to make, still includes: a casting mold cavity 2 which is arranged at the outer side of the top of the lower mold shell 1, a casting mold column 3 which is connected with the middle end of the inner side of the casting mold cavity 2, a fixing hole 4 which is arranged at the two sides of the top of the casting mold cavity 2, a support plate 5 which is arranged at the two sides of the outer side of the lower mold shell 1, a first hydraulic cylinder 6 which is arranged at the outer side of the top of the support plate 5, a push plate 7 which is arranged at the outer side of the top of the first hydraulic cylinder 6, an upper mold shell 8 which is arranged at the outer side of the top of the lower mold shell 1, a positioning column 9 which is connected with the outer side of the bottom of the upper mold shell 8, the vertical central line of the lower mold shell 1 and the vertical central line of the casting mold cavity 2 are mutually overlapped, the casting mold column 3 and the lower mold shell 1 are in an integrated structure, the support plate 5 and the lower mold shell 1 are in welded connection, the support plate 5 and the first hydraulic cylinder 6 are in threaded connection, and the push plate 7 forms a lifting structure through the first hydraulic cylinder 6, the push plate 7 is welded with the upper die shell 8, the positioning column 9 is fixedly connected with the upper die shell 8, the vertical central line of the positioning column 9 is coincident with the vertical central line of the fixing hole 4, the die casting cavity 2 is arranged on the inner side of the lower die shell 1, the first hydraulic cylinder 6 on the top of the supporting plate 5 works to enable the push plate 7 to drive the upper die shell 8 to move downwards, so that the lower die shell 1 can be attached to the upper die shell 8, in addition, the die casting cavity 1001 can be sealed by covering a cover plate on the top of the upper die shell 8, so that aluminum alloy casting can be carried out on the inner side of the die casting cavity 2, the first hydraulic cylinder 6 is in threaded connection with the supporting plate 5 and the push plate 7, so that the supporting plate 5 and the push plate 7 can be connected through the first hydraulic cylinder 6, and the supporting plate 5 and the push plate 7 are respectively fixed on the surfaces of the upper die shell 8 and the lower die shell 1, this makes the position between last mould casing 8 and the lower mould casing 1 to carry on spacingly, in addition go up mould casing 8 and lower mould casing 1 when laminating, it can insert 4 inboards in the fixed orifices at 1 top of lower mould casing to go up the reference column 9 of mould casing 8 bottom, this makes the fixed stability ability between last mould casing 8 and the lower mould casing 1 further promote, through fixed orifices 4, reference column 9 and backup pad 5, first pneumatic cylinder 6, the combination between push pedal 7 is fixed, can avoid the aluminum alloy casting in-process to take place the offset, this machining precision that is favorable to lifting means.
As shown in fig. 3 and 5, the ejector 10 is attached to the inside of the top of the upper die case 8, and the ejector 10 includes: the cover plate 1001 is provided with a mold opening 1002 around the outer side of the cover plate 1001, the second hydraulic cylinder 1003 is connected to the outer side of the top of the cover plate 1001, the top plate 1004 is arranged on the outer side of the top of the second hydraulic cylinder 1003, the outer surface of the cover plate 1001 is attached to the inner surface of the upper mold shell 8, the mold openings 1002 are symmetrically distributed along the vertical center line of the cover plate 1001, the second hydraulic cylinder 1003 at the bottom of the top plate 1004 works to enable the cover plate 1001 to move downwards and seal the mold cavity 2, molten steel can enter the inner side of the mold cavity 2 by pouring molten steel into the mold opening 1002, the mold openings 1002 are arranged around the outer side of the cover plate 1001, so that the molten steel can uniformly enter the mold cavity 2, the mold column 3 is arranged at the middle end of the mold cavity 2, a through hole can be formed in the center after the molten steel is solidified into an aluminum alloy piece, and the subsequent hole opening step of the aluminum alloy piece can be omitted, after the aluminum alloy piece is formed, the first hydraulic cylinder 6 drives the push plate 7 to move upwards to enable the upper die shell 8 to move upwards, the cover plate 1001 still covers the top of the formed aluminum alloy piece, the upper die shell 8 can be separated from the aluminum alloy piece in the process of moving upwards, the second hydraulic cylinder 1003 drives the cover plate 1001 to move upwards, the casting die port 1002 is arranged on the periphery of the outer side of the cover plate 1001, molten steel on the inner side of the casting die port 1002 forms a flow channel after being cooled, the formed aluminum alloy piece can be hung at the bottom of the cover plate 1001 through the flow channel, the aluminum alloy piece can be separated from the lower die shell 1 through the upward movement of the cover plate 1001, the cover plate 1001 continues to move upwards, the first hydraulic cylinder 6 drives the upper die shell 8 to move downwards to be attached to the lower die shell 1, and the formed aluminum alloy piece can be separated from the inner sides of the upper die shell 8 and the lower die shell 1, this enables the demolding of the aluminum alloy piece to be quickly facilitated.
As shown in fig. 3, the water inlet 11 is opened at the outer side of the front portion of the lower mold housing 1, the cooling pipe 12 is disposed on the inner side surface of the mold pillar 3, the cooling pipe 12 forms a communication structure through the water inlet 11, and the cooling pipe 12 and the mold pillar 3 are integrated, by injecting clean water into the water inlet 11, the clean water can enter the inner side of the mold pillar 3, the mold pillar 3 is located at the middle end of the inner side of the mold cavity 2, so that the mold pillar 3 can be located at the middle end of the inner side of the molded aluminum alloy part, after the clean water enters the inner side of the cooling pipe 12, the temperature of the mold pillar 3 is reduced, so that the mold pillar 3 can cool the aluminum alloy part, so that the temperature of the aluminum alloy part can be rapidly reduced, the cooling time of the aluminum alloy part can be reduced, and the processing efficiency of the device can be improved.
In summary, when the corrosion-resistant aluminum alloy casting shell with the combined fixing structure is used, firstly, according to the structure shown in fig. 3, the casting mold cavity 2 is arranged on the inner side of the lower mold shell 1, the first hydraulic cylinder 6 at the top of the supporting plate 5 works to enable the push plate 7 to drive the upper mold shell 8 to move downwards, so that the lower mold shell 1 can be attached to the upper mold shell 8, and in addition, the top of the upper mold shell 8 is covered with the cover plate 1001, so that the casting mold cavity 2 can be sealed, and aluminum alloy casting can be performed on the inner side of the casting mold cavity 2;
then, according to the configuration shown in fig. 4, the first hydraulic cylinder 6 is screwed to both the support plate 5 and the push plate 7, which enables the first hydraulic cylinder 6 to engage the support plate 5 and the push plate 7, and the support plate 5 and the push plate 7 are respectively fixed on the surfaces of the upper die shell 8 and the lower die shell 1, which enables the position between the upper die shell 8 and the lower die shell 1 to be limited, and in addition, when the upper die shell 8 and the lower die shell 1 are jointed, the positioning columns 9 at the bottom of the upper die shell 8 can be inserted into the fixing holes 4 at the top of the lower die shell 1, which further improves the fixing stability between the upper die shell 8 and the lower die shell 1, through the combined fixation among the fixing hole 4, the positioning column 9, the supporting plate 5, the first hydraulic cylinder 6 and the push plate 7, the position deviation in the aluminum alloy casting process can be avoided, and the processing precision of equipment is improved;
then, through the structure shown in fig. 3 and 5, the second hydraulic cylinder 1003 at the bottom of the top plate 1004 operates to enable the covering plate 1001 to move downwards and seal the casting cavity 2, molten steel can enter the casting cavity 2 by pouring molten steel into the casting opening 1002, the casting opening 1002 is arranged around the outer side of the covering plate 1001, so that the molten steel can uniformly enter the casting cavity 2, the casting pillar 3 is arranged at the middle end of the casting cavity 2, so that a through hole can be formed in the center after the molten steel is solidified into an aluminum alloy piece, and the subsequent hole opening step of the aluminum alloy piece can be omitted;
then, clear water is injected into the inner side of the water inlet 11, the clear water can enter the inner side of the mold column 3, the mold column 3 is positioned at the middle end of the inner side of the mold cavity 2, the mold column 3 can be positioned at the middle end of the inner side of the formed aluminum alloy piece, and the clear water enters the inner side of the cooling pipe 12, so that the temperature of the mold column 3 is reduced, the mold column 3 can cool the aluminum alloy piece, the temperature of the aluminum alloy piece can be rapidly reduced, the cooling time of the aluminum alloy piece can be reduced, and the processing efficiency of equipment can be improved;
finally, the aluminum alloy piece is formed, the first hydraulic cylinder 6 drives the push plate 7 to move upwards to enable the upper die shell 8 to move upwards, the cover plate 1001 is still covered on the top of the formed aluminum alloy piece, the upper die shell 8 can be separated from the aluminum alloy piece in the upward moving process, the second hydraulic cylinder 1003 drives the cover plate 1001 to move upwards, the casting die port 1002 is arranged on the periphery of the outer side of the cover plate 1001, molten steel on the inner side of the casting die port 1002 forms a flow channel after being cooled, the formed aluminum alloy piece can be hung on the bottom of the cover plate 1001 through the flow channel, the aluminum alloy piece can be separated from the lower die shell 1 through the upward moving of the cover plate 1001, the cover plate 1001 continues to move upwards, the first hydraulic cylinder 6 drives the upper die shell 8 to move downwards to be attached to the lower die shell 1, and the formed aluminum alloy piece can be separated from the inner sides of the upper die shell 8 and the lower die shell 1, this enables the demolding of the aluminum alloy piece to be quickly facilitated.
Claims (9)
1. A corrosion resistant aluminum alloy cast housing with a unitized fixture structure, comprising:
the lower die comprises a lower die shell (1), wherein the lower die shell (1) is made of an alloy material;
it is characterized by also comprising:
a casting cavity (2) which is arranged on the outer side of the top of the lower die shell (1);
a mold pillar (3) connected to an inner middle end of the mold cavity (2);
the fixing holes (4) are formed in two sides of the top of the casting die cavity (2);
support plates (5) disposed at both outer sides of the lower mold case (1);
a first hydraulic cylinder (6) disposed outside the top of the support plate (5);
a push plate (7) arranged outside the top of the first hydraulic cylinder (6);
an upper die housing (8) disposed outside a top of the lower die housing (1);
a positioning column (9) connected to the outside of the bottom of the upper mold housing (8);
a demolding device (10) connected to the top inner side of the upper mold shell (8);
a water inlet (11) which is opened on the front outer side of the lower die case (1);
a cooling tube (12) disposed at an inside surface of the mold pillar (3).
2. The corrosion-resistant aluminum alloy casting shell with the combined fixed structure as recited in claim 1, wherein the vertical center line of the lower die shell (1) and the vertical center line of the die cavity (2) coincide with each other, and the die column (3) and the lower die shell (1) are of an integrated structure.
3. The corrosion-resistant aluminum alloy casting shell with the combined fixed structure as claimed in claim 1, wherein the support plate (5) is welded to the lower die shell (1), and the support plate (5) is screwed to the first hydraulic cylinder (6).
4. The corrosion-resistant aluminum alloy casting shell with the combined fixed structure as claimed in claim 1, wherein the push plate (7) forms a lifting structure through the first hydraulic cylinder (6), and the push plate (7) is connected with the upper die shell (8) in a welding manner.
5. The corrosion-resistant aluminum alloy casting shell with the combined fixing structure as recited in claim 1, wherein the positioning column (9) is fixedly connected with the upper die shell (8), and a vertical center line of the positioning column (9) and a vertical center line of the fixing hole (4) are coincident with each other.
6. A corrosion-resistant aluminum alloy cast shell with a unitized fixed structure according to claim 1, wherein said de-molding device (10) comprises:
the die casting structure comprises a cover plate (1001), wherein the periphery of the outer side of the cover plate (1001) is provided with a die casting opening (1002);
a second hydraulic cylinder (1003) connected to the outside of the top of the cover plate (1001);
a top plate (1004) disposed outside a top of the second hydraulic cylinder (1003).
7. The cast casing of corrosion-resistant aluminum alloy with combined fixed structure of claim 6, wherein the outer surface of the cover plate (1001) is attached to the inner surface of the upper mold casing (8), and the mold openings (1002) are symmetrically distributed along the vertical center line of the cover plate (1001).
8. The corrosion-resistant aluminum alloy casting shell with the combined fixing structure as claimed in claim 6, wherein the second hydraulic cylinder (1003) is in threaded connection with the cover plate (1001), and the cover plate (1001) forms a lifting structure through the second hydraulic cylinder (1003).
9. The cast casing of corrosion-resistant aluminum alloy with combined fixed structure of claim 1, wherein the cooling pipe (12) is connected to the water inlet (11) to form a communication structure, and the cooling pipe (12) and the casting column (3) are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121437305.0U CN215431421U (en) | 2021-06-25 | 2021-06-25 | Corrosion-resistant aluminum alloy casting shell with combined fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121437305.0U CN215431421U (en) | 2021-06-25 | 2021-06-25 | Corrosion-resistant aluminum alloy casting shell with combined fixing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215431421U true CN215431421U (en) | 2022-01-07 |
Family
ID=79713376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121437305.0U Active CN215431421U (en) | 2021-06-25 | 2021-06-25 | Corrosion-resistant aluminum alloy casting shell with combined fixing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215431421U (en) |
-
2021
- 2021-06-25 CN CN202121437305.0U patent/CN215431421U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212384538U (en) | A casting mold for car precision casting spare | |
| CN215431421U (en) | Corrosion-resistant aluminum alloy casting shell with combined fixing structure | |
| CN201324829Y (en) | Multi-mold middle caster for rear nonferrous metals | |
| CN211360611U (en) | Automobile cylinder body die-casting die | |
| CN218252845U (en) | Low-pressure casting device for automobile hub | |
| CN216705902U (en) | High-efficient liquid forging device of bicycle motor gallows | |
| CN105855475A (en) | Automatic pouring device for automotive air conditioner compressor aluminum alloy stator disc | |
| CN213671763U (en) | Multi-slider cast-in-place aluminum alloy die-casting die | |
| CN213104341U (en) | Part casting mold of metal robot | |
| CN210415322U (en) | Injection mold with cooling function | |
| CN212920238U (en) | Injection mold convenient to unloading | |
| CN211888953U (en) | Semi-solid die-casting die for large thin-wall 5G communication parts | |
| CN216263415U (en) | Die casting die looses core in tubulose | |
| CN215434755U (en) | Injection mold convenient to release pressure | |
| CN212917580U (en) | Pouring device of automobile cylinder head cover | |
| CN220782198U (en) | Car light radiator die casting die | |
| CN214518144U (en) | Hot melt welding device of integral water pump case | |
| CN211965837U (en) | Shell casting mould | |
| CN214392222U (en) | Magnesium alloy type forming die | |
| CN218656690U (en) | Novel motor frame resin sand mould | |
| CN218744725U (en) | Integrated into one piece's main frame casting mould | |
| CN216680096U (en) | Investment casting mould with deep hole runner part | |
| CN220005933U (en) | Die casting die | |
| CN217192448U (en) | Production mould of motorcycle wheel hub | |
| CN215786651U (en) | Gating system for realizing tight die-casting die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |