CN206662235U - Die casting - Google Patents
Die casting Download PDFInfo
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- CN206662235U CN206662235U CN201720032449.5U CN201720032449U CN206662235U CN 206662235 U CN206662235 U CN 206662235U CN 201720032449 U CN201720032449 U CN 201720032449U CN 206662235 U CN206662235 U CN 206662235U
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- lower template
- die casting
- cope plate
- mold core
- oblique top
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Abstract
The utility model discloses a kind of die casting, including cope plate, lower template, upper mold core, lower mold core, oblique top, backing plate, bottom needle plate, thimble and sprue bushing；Thimble the second end end face and the outer surface of upper mold core, lower mold core and the second end of oblique top shaped article；Sprue bushing is mounted on cope plate, and lower template sets die casting runner, and die casting runner is provided at both ends with cooling bath；After cope plate and lower template matched moulds, the second end of thimble end face, the end of oblique top second, upper mold core and lower mold core form the first cavity of cast article, and the back-off position of the oblique top shaped article in the first cavity, back-off position is located at the side of shaped article；After cope plate and lower template divide mould, laterally synchronous parting, thimble action promote shaping product stripping to oblique top.By oblique top undercut, and the cooling bath storage cooling raw material at die casting runner both ends is set, improves the yield rate of product, manufacture finished product is low, is not required to the back-off position secondary operation to shaped article, reduces manufacturing procedure, improves operating efficiency.
Description
Technical field
The technical field of mould is the utility model is related to, especially relates to a kind of die casting.
Background technology
Die casting is a kind of method for casting liquid forging, and die casting is a kind of work completed on die casting die forging machine
Skill.During die casting, molten metal is first filled in the die cavity (pressure chamber cavity) for the die casting that type enters on die casting die forging machine, with molten metal
Cooling procedure pressurization forging, is improved the mechanical performance of metal blank, obtains die casting product.
Existing die casting, due to the back-off structure of product, when designing mould, the phenomenon of back-off can make mould de- not
Mould, therefore make the semi-finished product that can be stripped at back-off, after the demoulding, recycle the programming of CNC fixtures to mill out the back-off structure of product,
Finished product is drawn, if larger die-cast product, the raw material for most initially entering die casting cavity body is caused due to mold body
Cooling, if the product obtained by the raw material die cast cooled down, poor quality.And because shaped article needs secondary operation,
Increase process, while also increase cost, reduce efficiency.
Utility model content
Main purpose of the present utility model reduces cost to provide one kind, improves the die casting of yield rate.
In order to achieve the above object, the utility model proposes following technical scheme：
A kind of die casting, including cope plate, lower template, upper mold core, lower mold core, oblique top, backing plate, bottom needle plate and sprue bushing；
The upper mold core is installed on the cope plate, and the lower mold core and oblique top are installed on the lower template；The oblique top
First end is fixedly connected with the backing plate, and the backing plate is fixedly connected with the bottom needle plate, the top away from the lower template side
Pin first end is installed on the backing plate and fixed by the bottom needle plate, and the end of thimble second sequentially passes through the lower template
And lower mold core, and its end face and the outer surface of the upper mold core, lower mold core and the shaped article of oblique top second；
The sprue bushing is mounted on the cope plate, and the lower template sets die casting runner, the die casting runner both ends
It is provided with cooling bath；
After the cope plate and lower template matched moulds, second end of thimble end face, the end of oblique top second, upper mold core are with
Core rod forms the first cavity of cast article, the back-off position of the oblique top shaped article in the first cavity, the back-off
Position is located at the side of shaped article；
After the cope plate and lower template divide mould, laterally synchronous parting, the thimble action promote shaping to the oblique top
Product stripping.
Further, above-mentioned die casting includes fixed seat, and the oblique top first end is fixedly connected with the fixed seat, institute
Fixed seat is stated to be fixedly installed on the backing plate.
Further, above-mentioned cope plate is provided with first row air parcel, and the lower template is provided with second row air parcel, and described
One exhaust block, second row air parcel are arranged at the side of molding cavity and corresponded to up and down；
When the cope plate and lower template matched moulds, first row air parcel and second row air parcel form the second chamber that can be vented body
Body, during to the first cavity filling material, the air in the first cavity can flow to second cavity；
After formed product, the cope plate drives the first row air parcel to drive second row air parcel point with the lower template
Mould, the first row air parcel and second row air parcel separate.
Further, above-mentioned lower template is provided with spreader corresponding with the sprue bushing；
When the cope plate and the lower template matched moulds, the sprue bushing and the spreader support cooperation, shaping raw material from
The sprue bushing flows to first cavity along the spreader；
After the cope plate and the lower template divide mould, the sprue bushing separates with the spreader.
Further, above-mentioned die casting also includes knock-pin, and the knock-pin first end is installed on the backing plate simultaneously
Fixed by the bottom needle plate, the end of knock-pin second sequentially passes through the lower template and lower mold core, and its end face with it is described
The bottom surface fairing of die casting runner is tangent；
When the cope plate and the lower template need a point mould, shaping original of the knock-pin top to the die casting runner
Material, makes the shaping raw material of the die casting runner be separated with the lower mold core.
Further, above-mentioned die casting also includes guide pillars and bushes, described to lead when the cope plate and lower template matched moulds
Post is pierced into the guide pin bushing, makes the cope plate and the accurate matched moulds of lower template；
When the cope plate and lower template divide mould, the guide pillar separates with the guide pin bushing.
Further, after the oblique top laterally synchronous parting, the horizontal core pulling distance of the oblique top be more than or equal into
The lateral depth 2mm of type product.
Further, above-mentioned upper mold core is provided with shaping mold insert, and the shaping mold insert is molded along the cope plate and lower mould
The inner surface of the product through hole in plate open mold direction.
Further, above-mentioned shaping mold insert is removably mounted to the upper mold core.
Further, in addition to return mechanism, the return mechanism include spring and push back pin, and the push back pin installation is solid
Due on the backing plate, the spring is set on the push back pin, and is located at one of the lower template away from the cope plate
Between side and the backing plate；
After the thimble ejecting product, the return mechanism is by the thimble and the oblique top homing.
Die casting of the present utility model, by oblique top undercut, thimble ejecting product is stripped, and by setting die casting
The cooling bath storage cooling raw material at runner both ends, improves the yield rate of product, and manufacture finished product is low, it is not necessary to which shaped article is fallen
Button carries out secondary operation, reduces manufacturing procedure, improves operating efficiency.
Brief description of the drawings
Fig. 1 is the shaped article schematic diagram of the utility model die casting；
Fig. 2 is the structural representation of the die casting cope plate of the embodiment of the utility model one；
Fig. 3 is the structural representation of the die casting lower template of the embodiment of the utility model one；
Fig. 4 is the structure of cast die schematic diagram of the embodiment of the utility model one.
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that specific embodiment described herein is not used to limit this only to explain the utility model
Utility model.
It is herein part institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any order or art-recognized meanings.And " connection " described in the application, unless otherwise instructed, include directly or indirectly connecting
Connect.
Shown in reference picture 1-4, a kind of die casting of the embodiment of the utility model one, including cope plate 1, lower template are proposed
10th, upper mold core 2, lower mold core 9, oblique top 8, backing plate 17, bottom needle plate 18, thimble 21 and sprue bushing 3；Upper mold core 2 is installed on cope plate 1,
Lower mold core 9 and oblique top 8 are installed on lower template 10；The first end of oblique top 8 is fixedly connected with backing plate 17, and backing plate 17 is away from lower template 10 1
Side is fixedly connected with bottom needle plate 18, and the first end of thimble 21 is installed on backing plate 17 and fixed by bottom needle plate 18, the end of thimble 21 second
Sequentially pass through lower template 10 and lower mold core 9, and its end face and upper mold core 2, lower mold core 9 and the end shaped article 23 of oblique top 8 second
Outer surface；Sprue bushing 3 is mounted on cope plate 1, and lower template 10 sets die casting runner 12, and die casting runner 12 is provided at both ends with cold
But groove 11；After 10 matched moulds of cope plate 1 and lower template, the end end face of thimble 21 second, the end of oblique top 8 second, upper mold core 2 and lower mold core
9 form the first cavity of cast article 23, the back-off position 24 of the shaped article 23 of oblique top 8 in the first cavity, back-off position 23
Positioned at the side of shaped article 23；After cope plate 1 and lower template 10 divide mould, laterally synchronous parting, the action of thimble 21 push away oblique top 8
Dynamic shaped article 23 is stripped.
In the present embodiment, upper mold core 2 is removably mounted to cope plate 1, and lower mold core 9 is removably mounted to lower template 10,
And core rod is mounted on bolster, in addition to fixed seat 22, the first end of oblique top 8 and fixed seat 22 respectively by screw up and down
It is fixedly connected, fixed seat 22 is fixedly installed on backing plate 17.Oblique top 8 is fixed on backing plate 17 by fixed seat 22, the He of cope plate 1
After the matched moulds of lower template 10, the end end face of thimble 21 second, upper mold core 2, lower mold core 9 and the end of oblique top 8 second form the first cavity, shaping
Raw material is flowed into along sprue bushing 3, and its cooling bath 11 is filled up along die casting runner 12, then to the first cavity filling material and shaped article 23
Afterwards, cope plate 1 and lower template 10 divide mould, and laterally synchronous parting, the action promotion of thimble 21 are stripped shaped article 23 to oblique top 8, i.e.,
It can obtain required shaped article 23.The back-off position 24 of product 23 after shaping need not carry out the processing of Digit Control Machine Tool, improve
The operating efficiency of product 23 is manufactured, saves manually, reduces cost；Die casting runner 12 is set and cooling bath 11 is provided with both ends, can
Drain slag charge, the better quality of shaped article 23 produced, surface is more smooth.
In the present embodiment, cope plate 1 is provided with first row air parcel 5, and lower template 10 is provided with second row air parcel 7, and first
Exhaust block 5, second row air parcel 7 are arranged at the side of the first cavity of shaping and corresponded to up and down；When cope plate 1 and lower template 10 close
Mould, first row air parcel 5 and second row air parcel 7 form the second cavity that can be vented body, during to the first cavity filling molding raw material, the
Air in one cavity can flow to the second cavity；After product 20 is molded, cope plate 1 drives first row air parcel 5 and lower template 10
Second row air parcel 7 is driven to divide mould, first row air parcel 5 separates with second row air parcel 7.First row air parcel 5 and second row air parcel are set
7, after 10 matched moulds of cope plate 1 and lower template, moulding material fills the first cavity, and the air in the first cavity can flow into the second chamber
Body, slag charge is also brought to the second cavity existing for the first cavity, make shaping product reduce bubble etc. influence properties of product because
Element, improve the qualification rate of product 20.Because the material of die-cast product is metal, in the present embodiment, filled using aluminium liquid, when
The cavity of air flow second in one cavity, in the case of HTHP, aluminium liquid will also flow into the second cavity, work as first exhaust
After block 5 and second row air parcel 7 separate, then the aluminium flake (waste material) of the second cavity can be taken out.
In the present embodiment, above-mentioned lower template 10 is provided with spreader 13 corresponding with sprue bushing 3；When cope plate 1 and lower mould
The matched moulds of plate 10, sprue bushing 3 support cooperation with spreader 13, and shaping raw material flows to the first cavity from sprue bushing 3 along spreader 13；When upper
After template 1 and lower template 10 divide mould, sprue bushing 3 separates with spreader 13.Increase spreader 13, when moulding material flows into from sprue bushing 3,
First cavity is filled by spreader 13, it is possible to reduce the waste material at the charging of sprue bushing 3, reduce the cost, meanwhile, shaping
Time shortens.In the present embodiment, in addition to knock-pin 20, the first end of knock-pin 20 are installed on backing plate 17 and by bottom needle plate
18 fix, and the end of knock-pin 20 second sequentially passes through lower template 10 and lower mold core 9, and its end face and the bottom surface fairing phase of die casting runner 12
Cut；When cope plate 1 and lower template 10 need a point mould, knock-pin 20 pushes up the shaping raw material to die casting runner 12, makes die casting runner 12
Shaping raw material separated with lower mold core.
In the present embodiment, above-mentioned die casting also includes guide pillar 14 and guide pin bushing 4, when cope plate 1 and the matched moulds of lower template 10,
Guide pillar 14 is pierced into guide pin bushing 4, makes 10 accurate matched moulds of cope plate 1 and lower template；When cope plate 1 and lower template 10 divide mould, guide pillar 14
Separated with guide pin bushing 4.Wherein guide pillar 14 is fixedly installed in lower template 10, and guide pin bushing 4 is fixedly installed in cope plate 1, when cope plate 1 is with
When template 10 needs matched moulds, by the cooperation of guide pillar 14 and guide pin bushing 4, guide pillar 14 is pierced into guide pin bushing 4, makes cope plate 1 and lower template
10 accurate matched moulds, ensure the closing precision of die casting；When cope plate 1 and lower template 10 divide mould, guide pillar 14 away from guide pin bushing 4,
To take out required product 23.In another embodiment, guide pillar can be mounted on cope plate, and guide pin bushing is fixedly installed in mould
Plate, and guide pillars and bushes is worked in coordination, and is made cope plate and the accurate matched moulds of lower template, is ensured the closing precision of die casting.
In the present embodiment, when the lateral synchronous parting of above-mentioned oblique top 8, the horizontal core pulling distance of oblique top 8 be more than or equal into
The 2mm of 23 lateral depth of type product.In the present embodiment, filled using aluminium liquid into the first cavity, after product 23 is molded, oblique top 8
Horizontal core pulling distance be equal to the lateral depth of shaped article 23, in the ideal situation, product 23 can be stripped, if oblique top 8
When horizontal core pulling distance is equal to the lateral depth of shaped article 23, outer surface and the side of oblique top 8 of product 23 produce friction, cause
The outer surface of flower prod 23 is scraped, or because the error made, may produce back-off phenomenon, product 23 can not take off completely
Mould, when manufacturing and designing the die casting, the horizontal core pulling distance of oblique top 8 is more than or equal to 23 lateral depth of shaped article
2mm, the product 23 of shaping can safety break away from moulds, it is also possible to save the space of mould, reduce cost.
In the present embodiment, upper mold core 2 is provided with shaping mold insert 6, and shaping mold insert 6 is molded along cope plate 1 and lower template 10
The inner surface of the through hole of product 23 in open mold direction.Wherein shaping mold insert 6 is removably mounted to upper mold core 2.Shaping mold insert 6 can lead to
Screw locking is crossed to be fixed in upper mold core 2.
In the present embodiment, the die casting also includes return mechanism, return mechanism include spring (not shown) and
Push back pin 19, push back pin 19 are mounted on backing plate 17, and spring is set on push back pin 19, and positioned at lower template 10 away from upper
Between the side of template 1 and backing plate 17；Behind 21 ejecting product 23 of thimble, return mechanism is by thimble 21 and the homing of oblique top 8.
When cope plate 1 and lower template 10 divide mould, pressure of the spring between by backing plate 17 and lower template 10, when thimble 21 ejects shaped article
After 23, by the cooperation of push back pin 19 and spring, by the ejection partial reset in lower template 10, return mechanism will can also eject
The ejection partial reset of bar 19, can matched moulds again, carry out die casting next time.Return mechanism is matched somebody with somebody using spring and push back pin 19
Close, cost can be saved, change simple.
In another embodiment, return mechanism can also use oil cylinder to reset, when thimble 21 and oblique top 8 are by shaped article 23
Ejection, after product 23 is stripped, oil cylinder resets thimble 21 and oblique top 8, can also realize the ejection partial reset of knock-pin 20
Reset function；But because when manufacturing this product, the distance of the undercut of oblique top 8 is shorter, the ejection distance of thimble 21 is shorter, and
Cost height is resetted using oil cylinder, therefore is coordinated using spring and push back pin 19 and resetted, reset function can be both realized, can also save
Cost.
In the present embodiment, the upper mold core 2 of die casting is set fluted, and lower mold core 9, which is provided with, adapts to the convex of groove
Platform；When 10 matched moulds of cope plate 1 and lower template, groove and boss adaptation.In the present embodiment, 2 four jiaos of punishment of upper mold core are not set
Groove is equipped with, the boss of the groove of corresponding upper mold core 2 is provided with 9 four jiaos of lower mold core, when cope plate 1 and the matched moulds of lower template 10
When, the groove of upper mold core 2 supports adaptation in the boss of lower mold core 9, the first cavity can further be positioned, be further ensured that conjunction
The precision of mould.In another embodiment, the set location of groove and boss can exchange, and boss be set in upper mold core 2, under
Core rod 9 sets groove and the boss of corresponding upper mold core 2, can equally realize the precision for improving matched moulds.
In the present embodiment, die casting is additionally provided with bottom plate 16 and square iron 15, and wherein square iron 15 is located at the He of bottom needle plate 18
The both sides of backing plate 17, and square iron 15 is fixedly mounted with lower template 10, bottom plate 16 is fixedly installed in square iron 15 away from lower template 10
Side, after die casting loads die casting board, die casting board can fix lower template 10 by locking bottom plate 16, and pass through lock
Tight cope plate 1 realizes upper and lower mould matched moulds and divides mould, simple in construction.
Die casting of the present utility model, by oblique top undercut, thimble ejecting product is stripped, and by setting die casting
The cooling bath storage cooling raw material at runner both ends, improves the yield rate of product, and manufacture finished product is low, it is not necessary to which shaped article is fallen
Button carries out secondary operation, reduces manufacturing procedure, improves operating efficiency.
Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model,
Every equivalent structure made using the utility model specification and accompanying drawing content or equivalent flow conversion, or directly or indirectly
Other related technical areas are used in, are similarly included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of die casting, it is characterised in that including cope plate, lower template, upper mold core, lower mold core, oblique top, backing plate, bottom pin
Plate, thimble and sprue bushing；
The upper mold core is installed on the cope plate, and the lower mold core and oblique top are installed on the lower template；The oblique top first
End is fixedly connected with the backing plate, and the backing plate is fixedly connected with the bottom needle plate away from the lower template side, the thimble the
One end is installed on the backing plate and fixed by the bottom needle plate, and the end of thimble second sequentially passes through the lower template with
Core rod, and its end face and the outer surface of the upper mold core, lower mold core and the second end of oblique top shaped article；
The sprue bushing is mounted on the cope plate, and the lower template sets die casting runner, and the die casting runner both ends are set
There is cooling bath；
After the cope plate and lower template matched moulds, second end of thimble end face, the end of oblique top second, upper mold core and lower mold core shape
Into the first cavity of cast article, the back-off position of the oblique top shaped article in the first cavity, the back-off position is located at
The side of shaped article；
After to the first cavity filling material shaped article, the cope plate and lower template divide mould, and the oblique top is laterally synchronously divided
Type, the thimble action promote shaping product stripping.
2. die casting according to claim 1, it is characterised in that including fixed seat, the oblique top first end with it is described
Fixed seat is fixedly connected, and the fixed seat is fixedly installed on the backing plate.
3. die casting according to claim 1 or 2, it is characterised in that the cope plate is provided with first row air parcel, institute
State lower template and be provided with second row air parcel, the first row air parcel, second row air parcel be arranged at the side of the first cavity of shaping and
Correspond to up and down；
When the cope plate and lower template matched moulds, first row air parcel and second row air parcel form the second cavity that can be vented body, to
During the first cavity filling material, the air in the first cavity can flow to second cavity；
After formed product, the cope plate and lower template divide mould, wherein the cope plate drives the first row air parcel and institute
State lower template and drive the separation of second row air parcel, the first row air parcel and second row air parcel separate.
4. die casting according to claim 1, it is characterised in that the lower template is provided with corresponding with the sprue bushing
Spreader；
When the cope plate and the lower template matched moulds, the sprue bushing and the spreader support cooperation, and shaping raw material is from described
Sprue bushing flows to first cavity along the spreader；
After the cope plate and the lower template divide mould, the sprue bushing separates with the spreader.
5. die casting according to claim 4, it is characterised in that also including knock-pin, the knock-pin first end peace
Loaded on being fixed on the backing plate and by the bottom needle plate, the end of knock-pin second sequentially passes through the lower template and lower mould
Core, and its end face and the die casting runner bottom surface fairing are tangent；
When the cope plate and the lower template need a point mould, the knock-pin top makes to the shaping raw material of the die casting runner
The shaping raw material of the die casting runner separates with the lower mold core.
6. die casting according to claim 1, it is characterised in that also including guide pillars and bushes, when the cope plate and
Lower template matched moulds, the guide pillar are pierced into the guide pin bushing, make the cope plate and the accurate matched moulds of lower template；
When the cope plate and lower template divide mould, the guide pillar separates with the guide pin bushing.
7. die casting according to claim 1, it is characterised in that described oblique after the oblique top laterally synchronous parting
The horizontal core pulling distance on top is more than or equal to the lateral depth 2mm of shaped article.
8. die casting according to claim 1, it is characterised in that the upper mold core is provided with shaping mold insert, it is described into
Type mold insert is molded along the cope plate and the inner surface of the product through hole in lower template open mold direction.
9. die casting according to claim 8, it is characterised in that the shaping mold insert is removably mounted to the upper mould
Core.
10. die casting according to claim 1, it is characterised in that also include including return mechanism, the return mechanism
Spring and push back pin, the push back pin are mounted on the backing plate, and the spring is set on the push back pin, and is located at
Between side and the backing plate of the lower template away from the cope plate；
After the thimble ejecting product, the return mechanism is by the thimble and the oblique top homing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720032449.5U CN206662235U (en) | 2017-01-11 | 2017-01-11 | Die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720032449.5U CN206662235U (en) | 2017-01-11 | 2017-01-11 | Die casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206662235U true CN206662235U (en) | 2017-11-24 |
Family
ID=60378137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720032449.5U Active CN206662235U (en) | 2017-01-11 | 2017-01-11 | Die casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206662235U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097915A (en) * | 2018-01-22 | 2018-06-01 | 马鞍山市德钢模具制造有限公司 | A kind of easy-to-dismount die casting |
| CN110076317A (en) * | 2019-05-26 | 2019-08-02 | 深圳市宝田精工塑胶模具有限公司 | Pitched roof structure and zinc alloy forming die comprising same |
| CN113000815A (en) * | 2021-04-14 | 2021-06-22 | 嘉兴合祖机电设备有限公司 | Small-stroke forming die for automobile middle cover |
-
2017
- 2017-01-11 CN CN201720032449.5U patent/CN206662235U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097915A (en) * | 2018-01-22 | 2018-06-01 | 马鞍山市德钢模具制造有限公司 | A kind of easy-to-dismount die casting |
| CN108097915B (en) * | 2018-01-22 | 2019-08-27 | 马鞍山市德钢模具制造有限公司 | A kind of easy-to-dismount die casting |
| CN110076317A (en) * | 2019-05-26 | 2019-08-02 | 深圳市宝田精工塑胶模具有限公司 | Pitched roof structure and zinc alloy forming die comprising same |
| CN113000815A (en) * | 2021-04-14 | 2021-06-22 | 嘉兴合祖机电设备有限公司 | Small-stroke forming die for automobile middle cover |
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Effective date of registration: 20200410 Address after: 523000 No. 312 Tangqing East Road, Hengtang Community, Tangxia Town, Dongguan City, Guangdong Province Patentee after: LENS PRECISION (DONGGUAN) Co.,Ltd. Address before: Longgang District of Shenzhen City, Guangdong province 518000 Longgang Street Baolong Industrial City Jinlong two northbound Hongyuan Industrial Park building A building B building E Patentee before: SHENZHEN MENGZHIFANG COMMUNICATION PRODUCTS Co.,Ltd. |
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Effective date of registration: 20210508 Address after: 227 Xiangtai road Taizhou Jiangsu 225300 Patentee after: Lansi precision (Taizhou) Co.,Ltd. Address before: No.312, Tangqing East Road, Hengtang community, Tangxia Town, Dongguan City, Guangdong Province Patentee before: LENS PRECISION (DONGGUAN) Co.,Ltd. |