CN214920383U - Shell die-casting die - Google Patents
Shell die-casting die Download PDFInfo
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- CN214920383U CN214920383U CN202120964932.3U CN202120964932U CN214920383U CN 214920383 U CN214920383 U CN 214920383U CN 202120964932 U CN202120964932 U CN 202120964932U CN 214920383 U CN214920383 U CN 214920383U
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- 238000004512 die casting Methods 0.000 title claims abstract description 34
- 238000003825 pressing Methods 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The utility model discloses a shell die-casting die, which comprises a fixed die and a movable die, wherein a die assembly space is arranged between the fixed die and the movable die; the method is characterized in that: the core pulling mechanism is mounted at the top of the fixed die and comprises a positioning block, an oil cylinder and two groups of core pulling rods, the bottom of the positioning block is mounted on the top surface of the fixed die, the top of the positioning block is arranged right above the die assembly space, and a moving space is arranged between the positioning block and the die assembly space; the oil cylinder is arranged right above the positioning block, a pressing block is movably arranged in the moving space, and the tops of the two groups of core pulling rods are arranged on the bottom surface of the pressing block; two sets of abdicating holes are arranged in the die assembly interval, the bottoms of the two sets of abdicating holes are respectively communicated with the fixed die cavity and the movable die cavity, the bottom of each set of the core pulling rod is movably inserted in one set of the abdicating holes, and the output shaft of the oil cylinder is connected with the top of the pressing block. The utility model discloses be convenient for the installation and the maintenance of mechanism of loosing core are changed.
Description
Technical Field
The utility model relates to a mould especially relates to a shell die casting mould.
Background
For the production of aluminum alloy shells, a die-casting die is adopted for production many times, and the shells with hollow parts in the products are generally in core-pulling structures. The general core-pulling structure needs to bear large die-casting force, so that after the core-pulling structure is used for a period of time, the core-pulling structure is easy to bend or break, maintenance and replacement are needed, and the core-pulling structure is troublesome to maintain and replace. Meanwhile, in the die casting process, if the mold clamping force is not large enough, the die casting liquid leaks out from a gap between the fixed mold and the movable mold in the die casting process, and if the mold clamping force is too large, the die is easy to damage after being used for a long time. Therefore, the technical problem is solved by the skilled person in the art.
Disclosure of Invention
The utility model aims at providing a shell die casting die through using this structure, has both guaranteed the stability of die-casting process, and the maintenance of the mechanism of loosing core of being convenient for simultaneously is changed.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a shell die-casting die comprises a fixed die and a movable die, wherein a fixed die cavity is arranged on the side wall of the fixed die, a movable die cavity is arranged on the side wall of the movable die, the fixed die cavity is arranged right opposite to the movable die cavity, and a die assembly space is arranged between the fixed die and the movable die; the core pulling mechanism is mounted at the top of the fixed die and comprises a positioning block, an oil cylinder and two groups of core pulling rods, the bottom of the positioning block is mounted on the top surface of the fixed die, the top of the positioning block is arranged right above the die assembly space, and a moving space is arranged between the positioning block and the die assembly space; the oil cylinder is arranged right above the positioning block, a pressing block is movably arranged in the moving space, and the tops of the two groups of core pulling rods are arranged on the bottom surface of the pressing block;
two sets of abdicating holes are arranged in the die assembly space, the bottoms of the two sets of abdicating holes are respectively communicated with the fixed die cavity and the movable die cavity, the bottom of each set of the core pulling rod is movably inserted in one set of the abdicating holes, and the output shaft of the oil cylinder is connected with the top of the pressing block;
under the retraction state of the output shaft of the oil cylinder, the pressing block is arranged right above the fixed die and the movable die, and the bottom of the core pulling rod is retracted in the abdicating hole; and under the state that the output shaft of the oil cylinder extends out, the bottom surface of the pressing block is abutted against the top surfaces of the movable mold and the fixed mold, and the bottom of the core pulling rod is inserted into the cavity of the movable mold and the cavity of the fixed mold.
Among the above-mentioned technical scheme, be equipped with two sets of cover half groove of stepping down on the lateral wall of cover half, the bottom in cover half groove of stepping down with the cover half chamber is linked together, be equipped with two sets of movable mould grooves of stepping down on the lateral wall of movable mould, the bottom in movable mould groove of stepping down with the movable mould chamber is linked together, every group the cover half groove of stepping down is just to a set of the movable mould groove of stepping down sets up, and is a set of the cover half groove of stepping down and a set of constitute between the movable mould groove of stepping down the hole of stepping down.
In the technical scheme, the two groups of the abdicating holes are distributed on the front side and the rear side of the die closing space.
In the technical scheme, a second limiting notch is formed in the right side of the top surface of the fixed die of the movable die, a first limiting notch is formed in the left side of the top surface of the fixed die, and the first limiting notch and the second limiting notch are symmetrically arranged on two sides of the die assembly space; the right side and the left side of the bottom surface of the pressing block are respectively provided with a first limiting block and a second limiting block, and the first limiting block and the second limiting block are respectively inserted into the first limiting notch and the second limiting notch in the extending state of the oil cylinder output shaft.
Among the above-mentioned technical scheme, the left surface of first spacing breach is the first direction inclined plane that from top to bottom slopes to the right, the right flank of second spacing breach is the second direction inclined plane that from top to bottom slopes to the left, the left surface of first stopper with first direction inclined plane parallel arrangement, the right flank of second stopper with second direction inclined plane parallel arrangement.
In the technical scheme, a T-shaped clamping groove is formed in the top of the pressing block, a T-shaped rod is arranged on an output shaft of the oil cylinder and clamped in the T-shaped clamping groove, and the output shaft of the oil cylinder is connected with the top surface of the pressing block through the T-shaped rod and the T-shaped clamping groove.
In the technical scheme, the pressing block is provided with two groups of stepped holes, each stepped hole comprises an upper hole and a lower hole which are coaxially arranged, the diameter of each upper hole is larger than that of each lower hole, the top of the core pulling rod is provided with a limiting head, the limiting heads are clamped in the upper holes, the bottom surfaces of the limiting heads abut against the bottom surfaces of the upper holes, and the bottom of the core pulling rod penetrates through the lower holes to be inserted into the yielding holes.
In the technical scheme, two groups of polygonal limiting through grooves are formed in the side wall of the pressing block, each group of polygonal limiting through grooves are communicated with one group of upper holes, a polygonal limiting rod is inserted into each group of polygonal limiting through groove, the bottom surface of each polygonal limiting rod is abutted against the top surface of each limiting head, and the polygonal limiting rods lock and limit the limiting heads to be in the upper holes.
In the technical scheme, the locating piece includes mutually perpendicular's riser and diaphragm, the bottom of riser install perpendicularly in on the top surface of cover half, the right side of diaphragm with the top of riser links to each other perpendicularly, the diaphragm set up in directly over the compound die interval, the hydro-cylinder install in on the top surface of diaphragm, the briquetting set up in the below of diaphragm.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. the utility model discloses well core pulling mechanism installs on the cover half to be in the top of compound die interval, utilize the hydro-cylinder to drive the core pulling rod and reciprocate, use the core pulling rod to insert in the die cavity or break away from the die cavity, realize the work of loosing core, simultaneously, in this process, can also utilize the hydro-cylinder to promote the briquetting and lock spacing with the cover half with the movable mould, under the condition that the compound die power is not very big like this, also can guarantee the stability of die-casting in the die-casting process, effectively improve die-casting stability, reduce the maintenance rate, the maintenance of the core pulling rod of being convenient for is changed simultaneously;
2. the utility model discloses in take out the shoulder hole that core bar disect insertion arrived the briquetting, utilize polygon stop lever to carry on spacingly to the top of taking out the core bar, take out the installation of core bar like this and dismantle convenient and fast, the maintenance of the core bar of being convenient for is changed.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic perspective view of FIG. 1;
FIG. 4 is a schematic view of a partial cross-sectional structure of a connection between a fixed mold and a movable mold according to an embodiment of the present invention;
fig. 5 is a schematic view (in a top view) of a connection mechanism at a pressing block according to an embodiment of the present invention;
FIG. 6 is a schematic view of a connection mechanism at a pressing block according to a first embodiment of the present invention (in a bottom view);
fig. 7 is a schematic view of a cross-sectional structure of a connection portion between the pressing block and the rod drawing bar in an embodiment of the present invention.
Wherein: 1. fixing a mold; 2. moving the mold; 3. fixing a mold cavity; 4. a movable die cavity; 5. positioning blocks; 6. an oil cylinder; 7. drawing the core rod; 8. briquetting; 9. a hole of abdication; 10. fixing a mold abdicating groove; 11. a moving die abdicating groove; 12. a second limit notch; 13. a first limit notch; 14. a first stopper; 15. a second limiting block; 16. a first guide slope; 17. a second guide slope; 18. a T-shaped clamping groove; 19. a T-shaped rod; 20. an upper hole; 21. a lower hole; 22. a limiting head; 23. a polygonal limiting through groove; 24. a polygonal limiting rod; 25. a vertical plate; 26. a transverse plate.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
the first embodiment is as follows: referring to fig. 1-7, a shell die-casting die comprises a fixed die 1 and a movable die 2, wherein a fixed die cavity 3 is arranged on the side wall of the fixed die, a movable die cavity 4 is arranged on the side wall of the movable die, the fixed die cavity is arranged right opposite to the movable die cavity, and a die assembly space is arranged between the fixed die and the movable die; the core pulling mechanism is mounted at the top of the fixed die and comprises a positioning block 5, an oil cylinder 6 and two groups of core pulling rods 7, the bottom of the positioning block is mounted on the top surface of the fixed die, the top of the positioning block is arranged right above the die assembly space, and a moving space is arranged between the positioning block and the die assembly space; the oil cylinder is arranged right above the positioning block, a pressing block 8 is movably arranged in the moving space, and the tops of the two groups of core pulling rods are arranged on the bottom surface of the pressing block;
two sets of abdicating holes 9 are arranged in the die assembly interval, the bottoms of the two sets of abdicating holes are respectively communicated with the fixed die cavity and the movable die cavity, the bottom of each set of the core pulling rod is movably inserted in one set of the abdicating holes, and the output shaft of the oil cylinder is connected with the top of the pressing block;
under the retraction state of the output shaft of the oil cylinder, the pressing block is arranged right above the fixed die and the movable die, and the bottom of the core pulling rod is retracted in the abdicating hole; and under the state that the output shaft of the oil cylinder extends out, the bottom surface of the pressing block is abutted against the top surfaces of the movable mold and the fixed mold, and the bottom of the core pulling rod is inserted into the cavity of the movable mold and the cavity of the fixed mold.
In this embodiment, during actual use, before mold closing, the output shaft of the oil cylinder is in a retraction state, so that a gap is formed between the pressing block and the fixed mold and between the pressing block and the movable mold, so that in the mold opening process, the pressing block does not influence the mold opening work of the fixed mold and the movable mold, in addition, the abdicating hole is located in the mold closing gap, and in the mold opening process, the core pulling rod is located in the mold closing gap and does not influence mold closing and mold closing. During the use, carry out the compound die earlier, then the output shaft of hydro-cylinder stretches out, inserts movable mould chamber and cover half intracavity with the bottom of core pulling rod, then carries out die-casting work, and like this, core pulling rod department just can not filled by the material when die-casting, and die-casting work is accomplished after. Before opening the die, an output shaft of the oil cylinder drives the core rod to retract into the yielding hole, so that the core rod is separated from the fixed die cavity, the movable die cavity and the product, then the die is opened, and thus the core rod can be separated from the product in advance, and the product is convenient to demould. Meanwhile, the pressing block can be separated from the fixed die and the movable die in a contact mode, die opening is not affected, the movable die cannot be scratched by the pressing block when moving, and damage to the die is prevented.
Referring to fig. 4, be equipped with two sets of cover half groove of stepping down 10 on the lateral wall of cover half, the bottom in cover half groove of stepping down with the cover half chamber is linked together, be equipped with two sets of movable mould grooves of stepping down 11 on the lateral wall of movable mould, the bottom in movable mould groove of stepping down with the movable mould chamber is linked together, every group the cover half groove of stepping down is just to a set of the movable mould groove of stepping down sets up, and is a set of the cover half groove of stepping down and a set of constitute between the movable mould groove of stepping down a set of the hole of stepping down.
And the two groups of the abdicating holes are distributed on the front side and the rear side of the die assembly space.
In this embodiment, the fixed mold abdicating groove and the movable mold abdicating groove form abdicating holes, which are located on the side walls of the fixed mold and the movable mold, so that the core pulling part is located at the connection position of the fixed mold and the movable mold.
Referring to fig. 4 to 7, a second limit notch 12 is arranged on the right side of the top surface of the fixed die of the movable die, a first limit notch 13 is arranged on the left side of the top surface of the fixed die, and the first limit notch and the second limit notch are symmetrically arranged on two sides of the die assembly space; the right side and the left side of the bottom surface of the pressing block are respectively provided with a first limiting block 14 and a second limiting block 15, and the first limiting block and the second limiting block are respectively inserted into the first limiting notch and the second limiting notch when the oil cylinder output shaft is in an extending state.
In this embodiment, in order to prevent the locking die power of die-casting equipment not enough, make the material spill from the gap of cover half and movable mould in die-casting process, also prevent that the locking die power is too big and lead to cover half or movable mould damaged, through the setting that sets up spacing breach and stopper, after cover half and movable mould compound die, the core rod inserts behind cover half chamber and the movable mould intracavity, the briquetting supports on the top surface of cover half and movable mould, the stopper that corresponds also can press in the spacing breach that corresponds, utilize the material characteristic of briquetting itself like this, carry out a enhancement mode locking work to the lateral part of cover half and movable mould, under certain locking die power, also can guarantee the locking die dynamics between cover half and movable mould in die-casting process, prevent that the material from spilling in the compound die interval, guarantee the stability and the quality of product die-casting.
Referring to fig. 4, the left surface of the first limiting notch is a first guiding inclined surface 16 inclined from top to bottom to the right, the right surface of the second limiting notch is a second guiding inclined surface 17 inclined from top to bottom to the left, the left surface of the first limiting block is parallel to the first guiding inclined surface, and the right surface of the second limiting block is parallel to the second guiding inclined surface.
Through the setting on direction inclined plane, when the stopper inserts corresponding spacing breach like this, can prevent that stopper and spacing breach from appearing a little deviation, the stopper also can be through the smooth card of direction on direction inclined plane go into spacing breach in, also can reduce the machining precision of spacing breach and stopper, reduce cost guarantees that the card that the stopper can be smooth goes into spacing breach.
Referring to fig. 2, 3 and 5, a T-shaped clamping groove 18 is formed in the top of the pressing block, a T-shaped rod 19 is arranged on an output shaft of the oil cylinder, the T-shaped rod is clamped in the T-shaped clamping groove, and the output shaft of the oil cylinder is connected with the top surface of the pressing block through the T-shaped rod and the T-shaped clamping groove. Therefore, the pressing block and the output shaft of the oil cylinder are convenient and quick to mount and dismount, and the pressing block, the core pulling rod, the oil cylinder are convenient to maintain and replace.
Referring to fig. 7, two sets of stepped holes are formed in the pressing block, each stepped hole includes an upper hole 20 and a lower hole 21 which are coaxially arranged, the diameter of each upper hole is larger than that of each lower hole, a limiting head 22 is arranged at the top of the core rod and clamped in each upper hole, the bottom surface of each limiting head abuts against the bottom surface of each upper hole, and the bottom of the core rod penetrates through each lower hole and is inserted into the corresponding abdicating hole.
The side wall of the pressing block is provided with two groups of polygonal limiting through grooves 23, each group of polygonal limiting through grooves is communicated with one group of upper holes, a polygonal limiting rod 24 is inserted into each group of polygonal limiting through groove, the bottom surface of each polygonal limiting rod abuts against the top surface of each limiting head, and the polygonal limiting rods lock and limit the limiting heads in the upper holes.
In this embodiment, the general size of the core rod can not be very big, especially, some core rod diameters are smaller, and in the process of die-casting, the core rod also can receive great die-casting extrusion force, deformation or cracked phenomenon appears easily, the maintenance that leads to the core rod is changed the frequency relatively higher, therefore, adopt the setting of shoulder hole, and set up the spacing head at the top of core rod, utilize the bottom of spacing head to support in last hole, spacing to core rod and spacing head downward distance through last hole, the spacing logical groove of rethread polygon is with the last hole intercommunication that corresponds, insert the spacing logical inslot of polygon type again with the polygon gag lever post, the polygon gag lever post that is hungry can block the top of spacing head, make the core rod both can't the downstream, also can't the upstream movement, it is spacing to the upper and lower position of core rod. Meanwhile, the polygonal limiting rod is adopted, so that the polygonal limiting rod cannot rotate, and the limiting stability and quality are effectively guaranteed. Simultaneously, need tear the core bar open the words, carry out the die sinking between, then move the briquetting towards the left through T type draw-in groove, break away from with being connected of hydro-cylinder output shaft, briquetting and core bar are dismantled this moment, then utilize tools such as rapping bar, insert the spacing logical inslot of polygon, beat the polygon gag lever post from this the spacing logical inslot of polygon, make it break away from the spacing logical groove of polygon, can promote the core bar up like this and break away from the briquetting, then change the core bar can, after the change is accomplished, insert the spacing logical inslot of polygon with the polygon gag lever post again, it can to carry out spacingly to the core bar, convenient and fast.
Referring to fig. 1 to 3, the positioning block includes a vertical plate 25 and a transverse plate 26 which are perpendicular to each other, the bottom of the vertical plate is vertically installed on the top surface of the fixed mold, the right side of the transverse plate is vertically connected with the top of the vertical plate, the transverse plate is arranged right above the mold closing interval, the oil cylinder is installed on the top surface of the transverse plate, and the pressing block is arranged below the transverse plate. Thus, the oil cylinder and the pressing block can be positioned right above the die closing space.
Claims (9)
1. A shell die-casting die comprises a fixed die and a movable die, wherein a fixed die cavity is arranged on the side wall of the fixed die, a movable die cavity is arranged on the side wall of the movable die, the fixed die cavity is arranged right opposite to the movable die cavity, and a die assembly space is arranged between the fixed die and the movable die; the method is characterized in that: the core pulling mechanism is mounted at the top of the fixed die and comprises a positioning block, an oil cylinder and two groups of core pulling rods, the bottom of the positioning block is mounted on the top surface of the fixed die, the top of the positioning block is arranged right above the die assembly space, and a moving space is arranged between the positioning block and the die assembly space; the oil cylinder is arranged right above the positioning block, a pressing block is movably arranged in the moving space, and the tops of the two groups of core pulling rods are arranged on the bottom surface of the pressing block;
two sets of abdicating holes are arranged in the die assembly space, the bottoms of the two sets of abdicating holes are respectively communicated with the fixed die cavity and the movable die cavity, the bottom of each set of the core pulling rod is movably inserted in one set of the abdicating holes, and the output shaft of the oil cylinder is connected with the top of the pressing block;
under the retraction state of the output shaft of the oil cylinder, the pressing block is arranged right above the fixed die and the movable die, and the bottom of the core pulling rod is retracted in the abdicating hole; and under the state that the output shaft of the oil cylinder extends out, the bottom surface of the pressing block is abutted against the top surfaces of the movable mold and the fixed mold, and the bottom of the core pulling rod is inserted into the cavity of the movable mold and the cavity of the fixed mold.
2. A housing die-casting mould as claimed in claim 1, wherein: the die comprises a fixed die and a movable die, and is characterized in that two sets of fixed die yielding grooves are formed in the side wall of the fixed die, the bottom of each fixed die yielding groove is communicated with a fixed die cavity, two sets of movable die yielding grooves are formed in the side wall of the movable die, the bottom of each movable die yielding groove is communicated with the corresponding movable die cavity, each fixed die yielding groove is just right matched with one set of movable die yielding groove, and each fixed die yielding groove is matched with one set of movable die yielding groove to form one set of yielding holes.
3. A housing die-casting mould as claimed in claim 1, wherein: and the two groups of the abdicating holes are distributed on the front side and the rear side of the die assembly space.
4. A housing die-casting mould as claimed in claim 1, wherein: a second limiting notch is formed in the right side of the top surface of the fixed die of the movable die, a first limiting notch is formed in the left side of the top surface of the fixed die, and the first limiting notch and the second limiting notch are symmetrically arranged on two sides of the die assembly space; the right side and the left side of the bottom surface of the pressing block are respectively provided with a first limiting block and a second limiting block, and the first limiting block and the second limiting block are respectively inserted into the first limiting notch and the second limiting notch in the extending state of the oil cylinder output shaft.
5. A housing die-casting mould as claimed in claim 4, wherein: the left surface of first spacing breach is for the first direction inclined plane that from top to bottom slopes to the right, the right flank of second spacing breach is for the second direction inclined plane that from top to bottom slopes to the left, the left surface of first stopper with first direction inclined plane parallel arrangement, the right flank of second stopper with second direction inclined plane parallel arrangement.
6. A housing die-casting mould as claimed in claim 1, wherein: the top of briquetting is equipped with a T type draw-in groove, be equipped with a T type pole on the output shaft of hydro-cylinder, T type pole card is located in the T type draw-in groove, the output shaft of hydro-cylinder warp T type pole and T type draw-in groove with the top surface of briquetting links to each other.
7. A housing die-casting mould as claimed in claim 1, wherein: the pressure block is provided with two groups of stepped holes, each stepped hole comprises an upper hole and a lower hole which are coaxially arranged, the diameter of each upper hole is larger than that of each lower hole, a limiting head is arranged at the top of the core-pulling rod and clamped in each upper hole, the bottom surface of each limiting head abuts against the bottom surface of each upper hole, and the bottom of the core-pulling rod penetrates through each lower hole and is inserted into the corresponding abdicating hole.
8. An outer shell die-casting mould as claimed in claim 7, wherein: the side wall of the pressing block is provided with two groups of polygonal limiting through grooves, each group of polygonal limiting through grooves are communicated with one group of upper holes, a polygonal limiting rod is inserted into each group of polygonal limiting through groove, the bottom surface of each polygonal limiting rod is abutted against the top surface of the limiting head, and the polygonal limiting rods lock and limit the limiting heads in the upper holes.
9. A housing die-casting mould as claimed in claim 1, wherein: the locating piece includes mutually perpendicular's riser and diaphragm, the bottom of riser install perpendicularly in on the top surface of cover half, the right side of diaphragm with the top of riser links to each other perpendicularly, the diaphragm set up in directly over the compound die interval, the hydro-cylinder install in on the top surface of diaphragm, the briquetting set up in the below of diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120964932.3U CN214920383U (en) | 2021-05-08 | 2021-05-08 | Shell die-casting die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120964932.3U CN214920383U (en) | 2021-05-08 | 2021-05-08 | Shell die-casting die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214920383U true CN214920383U (en) | 2021-11-30 |
Family
ID=79062978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120964932.3U Active CN214920383U (en) | 2021-05-08 | 2021-05-08 | Shell die-casting die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214920383U (en) |
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2021
- 2021-05-08 CN CN202120964932.3U patent/CN214920383U/en active Active
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Effective date of registration: 20240624 Address after: 442000, Group 2, Erdaopo Village, Chadian Town, Yunyang District, Shiyan City, Hubei Province Patentee after: Shiyan Dingzhi Precision Manufacturing Co.,Ltd. Country or region after: China Address before: 215341 No. 158, Jiguang North Road, Qiandeng Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: HECO Industrial Technology (Kunshan) Co.,Ltd. Country or region before: China |
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