CN208127348U - A kind of molding machine - Google Patents
A kind of molding machine Download PDFInfo
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- CN208127348U CN208127348U CN201820781282.7U CN201820781282U CN208127348U CN 208127348 U CN208127348 U CN 208127348U CN 201820781282 U CN201820781282 U CN 201820781282U CN 208127348 U CN208127348 U CN 208127348U
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- molding machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
A kind of molding machine, including device noumenon, the connection area of the supercharging device and balancing device can be greater than with the connection area of the die assembly along the die assembly, the supercharging device for driving the die assembly to move and the balancing device connecting with the die assembly of the first preset direction relative motion, the balancing device by being equipped in described device ontology.This molding machine increases mold forced area by setting balancing device, come additional mechanical supercharging and stablize mold by setting balancer, keep mold stress more uniform, in the aluminum plastic film of punching press large area, be less likely to occur the case where being ruptured since aluminum plastic film local pressure is excessive, meet rush shell process big depth, big shaping area aluminum plastic film needs.
Description
Technical field
The utility model relates to aluminum plastic film encapsulation fields, in particular to a kind of molding machine.
Background technique
Currently, thickness is thicker since polymer lithium ion battery monomer capacity is larger, the encapsulation of existing battery core is generally used
Aluminum plastic film encapsulation.Before encapsulation, need to stamp out the groove for containing battery core on plastic-aluminum membrane body.Existing aluminum plastic film molding
Method generally uses plastic-aluminum membrane forming device to rush shell.
Drawing performance level is rushed according to current Tool and Die Technology and current aluminum plastic film, the aluminum plastic film of import uses state's external mold
Tool, most favourable opposition shell depth are 9mm, and using domestic mold, most favourable opposition shell depth is 6.00mm.General batch production is in use, make
When with gate-in mold system, material is preferably flushed to 6.00mm;When using domestic mold, material is preferably flushed to 4.00mm, otherwise, just has and breaks through
It is dangerous.It is limited by shell depth is rushed, the general cell thickness of the polymer Li-ion battery of batch production is difficult to more than 12mm, in small batches
Amount production is also difficult to more than 18mm, in this way, the geometric volume of battery is just greatly limited, if battery will be made into 100Ah
Such vast capacity, is very difficult to realization.
More mature in industry at present is that digital product cell aluminum-plastic membrane rushes shell technology, it is general used in rush shell mold
The shaping area of tool is all smaller, substantially maximum shaping area and A4 paper size (297mmX210mm) quite, big depth,
Big shaping area rushes the difficult point that shell processing is aluminum plastic film processing and forming.
Carry out big depth, the aluminum plastic film of big shaping area rush shell processing, for aluminum plastic film rush shell molding die, molding
Device, molding machine are all a test.
Utility model content
The purpose of this utility model is to provide a kind of molding machines, for carrying out big depth, big forming surface to aluminum plastic film
Long-pending rushes shell processing.
What the embodiments of the present invention were realized in:
A kind of molding machine, including device noumenon, being equipped in device noumenon can be along the first preset direction relative motion
Die assembly, the supercharging device for driving die assembly mobile and balancing device connect with die assembly, balancing device and
The connection area of die assembly is greater than the connection area of supercharging device and balancing device.
Further, it in the preferred embodiment of the utility model, is additionally provided in above-mentioned apparatus ontology for installation mold
The upper mould fixed plate of component and lower mold mounting plate, upper mould fixed plate and balancing device are sequentially connected, lower mold mounting plate fixed setting.
Further, in the preferred embodiment of the utility model, above-mentioned die assembly includes lower die and upper mold, and lower die is solid
Fixed to connect lower mold mounting plate, upper mold is fixedly connected with upper mould fixed plate.
Further, in the preferred embodiment of the utility model, above-mentioned apparatus ontology is default equipped with being parallel to first
The guide rod in direction, upper mould fixed plate are connect with guide rod by linear bearing.
Further, in the preferred embodiment of the utility model, above-mentioned balancing device includes balance base, supercharging device,
Balance base, upper mould fixed plate are sequentially connected, and connection area is sequentially increased.
Further, in the preferred embodiment of the utility model, above-mentioned apparatus ontology further includes having putting down for telescopic shaft
Weighing apparatus, supercharging device include telescopic drive shaft, and drive shaft is parallel with telescopic shaft, and drive shaft, telescopic shaft are symmetrically disposed on
Balancing device.
Further, in the preferred embodiment of the utility model, the quantity of above-mentioned guide rod is multiple and arranged symmetrically
In upper mould fixed plate surrounding.
Further, in the preferred embodiment of the utility model, above-mentioned upper mould fixed plate is in rectangle, and rectangular edges are symmetrical
The through-hole being provided with, through-hole is interior to be equipped with guide rod, and guide rod is connect with through-hole by linear bearing.
Further, in the preferred embodiment of the utility model, above-mentioned upper mould fixed plate, balance base are rectangle, are put down
Seat weigh on the symmetry axis for being fixed on upper mould fixed plate, the drive shaft of supercharging device is fixed on the position of form center of balance base, puts down
The quantity of weighing apparatus be it is multiple, the telescopic shaft of balancer centered on position of form center be symmetrical arranged.
Further, in the preferred embodiment of the utility model, above-mentioned lower mold mounting plate and the setting of device noumenon bottom
There is groined type rib.
The beneficial effect of the utility model embodiment is:
This molding machine increases mold forced area by setting balancing device, by setting balancer come additional mechanical supercharging and
Stablize mold, keep mold stress more uniform, in the aluminum plastic film of punching press large area, it is not easy to occur due to aluminum plastic film part by
Power is excessive and the case where rupture, meet rush shell process big depth, big shaping area aluminum plastic film needs.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of molding machine provided by the embodiment of the utility model;
Fig. 2 is the structural schematic diagram of molding machine provided by the embodiment of the utility model and molding die;
Fig. 3 is that aluminum plastic film provided by the embodiment of the utility model forms front shaping device state diagram;
Fig. 4 is molding machine state diagram in aluminum plastic film provided by the embodiment of the utility model molding;
Fig. 5 is that aluminum plastic film provided by the embodiment of the utility model forms rear forming device state diagram;
Fig. 6 is the structural schematic diagram of lower die provided by the embodiment of the utility model;
Fig. 7 is the structural schematic diagram of the side fillet of lower die mold core provided by the embodiment of the utility model;
Fig. 8 is the structural schematic diagram at the tip circle angle of lower die mold core provided by the embodiment of the utility model;
Fig. 9 is the structural schematic diagram at plastic-aluminum putamina base angle and battery core base angle after rushing shell.
Icon:000- battery core;010- aluminum plastic film;100- frame body;110- guide rod;120- first straight line axis
It holds;200- lathe;300- cover;Mold mounting plate under 400-;410- lower die;420- lower die mold core;The installation of 500- upper mold
Plate;510- upper mold;610- mounting rod;620- second straight line bearing;630- elastic component;700- supercharging device;800- is flat
Weighing apparatus;900- balance base.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should be noted that:Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, or
The utility model product using when the orientation or positional relationship usually put, be merely for convenience of description the utility model and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " etc. are only used for area
Divide description, is not understood to indicate or imply relative importance.
In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly
Low dip.It is not to indicate that the structure has been had to if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It is complete horizontal, but can be slightly tilted.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
It is worth noting that " the first preset direction " and " the second preset direction " is mutually perpendicular to, in the present embodiment for convenient for
Description, is set as vertical direction for " the first preset direction ", " the second preset direction " is set as horizontal direction, but can not regard
For unique restriction to the first preset direction and the second preset direction.
Attached drawing 1 is please referred to, the present embodiment provides a kind of molding machines, for rushing shell processing aluminum plastic film comprising frame body
100 and molding machine.
Above-mentioned molding machine includes device noumenon, and device noumenon includes die assembly, supercharging device 700 and balancing device.
Wherein, die assembly includes upper mold 510 and lower die 410, and upper mold 510 and lower die 410 can be along the first preset direction relative motions;Under
Mould 410 includes that the framework of periphery and internal lower die mold core 420, the lower die mold core 420 can stretch out institute along the first preset direction
It states framework and the upper mold 510 cooperates, the upper mold 510 has the groove that can be used to accommodate the lower die mold core 420, described recessed
Groove edge has the nip portion being bonded with the framework.Supercharging device 700 can drive upper mold 510 to move to lower die 410;Balance dress
Set connection supercharging device 700 and upper mold.
Above-mentioned frame body 100 includes cover 300, the cavity at middle part and the lathe 200 of lower part on top.Cover 300 is used
In installation supercharging device 700, lathe 200 allows upper mold 510 along the first default side for fixing lower die 410, cavity for providing
To the space of movement.
Attached drawing 2 is please referred to, supercharging device 700 and balancer 800 are installed in cover 300, balancer 800 increases for assisting
Pressure and balancing die, supercharging device 700 have telescopic drive shaft, and balancer 800 has the telescopic shaft for being parallel to drive shaft,
The drive shaft of supercharging device 700 and the telescopic shaft of balancer 800 are symmetrically disposed on balancing device.Supercharging device in the present embodiment
700 using pressurized cylinder, balancer 800 using cylinder.
Balancing device includes the more uniform balance base 900 of the pressure for passing out supercharging device 700, balance base
900 be cuboid, and drive shaft and telescopic shaft are mounted on the upper surface of cuboid, and the lower surface of cuboid connects upper mold 510.
Upper mold mounting base 500 is additionally provided between upper mold 510 and balance base 900, upper mold mounting base 500 is rectangle, balance
Seat 900 is across being fixed on the length of upper mould fixed plate 500 on symmetry axis.
In order to which the pressure for making supercharging device 700 pass to upper mold 510 is more uniform, drive shaft and telescopic shaft and balance base
900 connection area, balance base 900 and the connection area of upper mould fixed plate 500 is sequentially increased.Further to balance pressure, on
Within the scope of the floor projection of upper mould fixed plate 500, i.e. the horizontal area of upper mould fixed plate 500 is greater than the floor projection of mould 510
The horizontal area of upper mold 510.
Attached drawing 6 is please referred to, lower mold mounting plate 400 is fixedly installed on the lathe 200 of lower part, lower die mold core 420 is fixed on
The middle part of lower mold mounting plate 400, please refers to attached drawing 2, and the position of the framework of corresponding 410 periphery of lower die of lower mold mounting plate 400 is vertical
It is fixed with mounting rod 610, mounting rod 610 is connect with framework by second straight line bearing 620, on the lower mold mounting plate 400 also
Equipped with the elastic component 630 for being used to support framework.
For strengthen rigidity and bending resistance, 200 bottom of lathe and lower 400 bottom of mold mounting plate are provided with groined type muscle
Item.
More steady in order to move upper mold 510 and upper mould fixed plate 500, device noumenon further includes vertical guide rod
110, guide rod 110 is installed between lathe 200 and cover 300 in the present embodiment, and upper mould fixed plate 500 and guide rod 110 are logical
Cross the connection of first straight line bearing 120.
When to guarantee that aluminum plastic film shaping area is larger, it can reach bigger and rushing shell depth and excellent Forming Quality, improving
Shell success rate is rushed, probability is broken through in reduction, and fillet is arranged in the corner of the lower die mold core 420 provided in the present embodiment.Wherein, it please refers to
Attached drawing 3 and attached drawing 7, the top edge of lower die mold core 420 are provided with the tip circle angle that radius is R2, please refer to attached drawing 6 and attached drawing 8,
The lateral edge of lower die mold core 420 is provided with the side fillet that radius is R1.If R1 is too small, rush that shell depth is shallower, and depth is inadequate, thinks
Punching is deeper, then has and break through risk;R1 is excessive, please refers to shown in attached drawing 9, after aluminum plastic film rushes casing forming, 010 base angle mistake of aluminum plastic film
Greatly, it cannot be bonded with 000 base angle of battery core, battery core 000 can place that not in place, there are gaps.If R2 is too small, it is shallower to rush shell depth,
Depth is inadequate, thinks that punching is deeper, then has and break through risk;R2 is excessive, and aluminum plastic film rushes that casing forming is bad to be easy to produce gauffer.
In addition, aluminum plastic film is not easy to break through or wrinkle when rushing shell, please join in order to improve aluminum plastic film processing and forming success rate
According to attached drawing 3 and attached drawing 7, limit upper mold 510 groove inner wall and spacing of the lower die mold core 420 on the second preset direction as
d.D is too small, and aluminum plastic film can wrinkle, and is easy to break through;D is excessive, and aluminum plastic film can also wrinkle, and forms bad.
Inventor is obtained by repeated multiple times experiment, in the identical situation of plastic-aluminum film thickness, R1 and aluminum plastic film most favourable opposition shell
Depth, the relationship such as table 1 for forming situation, R2 and aluminum plastic film most favourable opposition shell depth, the relationship such as table 2 for forming situation, d and aluminum plastic film
Most favourable opposition shell depth, the relationship such as table 3 for forming situation:
Table 1
According to table 1, as R1 value is gradually increased, the most favourable opposition shell depth of aluminum plastic film increases, when R1 is greater than 4.00mm, most
Favourable opposition shell depth is greater than 9.00mm;After R1 increases to 5.00mm, the amplification of most favourable opposition shell depth is gradually reduced, when R1 value exists
When between 4.00mm~6.00mm, aluminum plastic film molding is good, and surface is smooth non-wrinkled.
Table 2
According to table 2, as R2 value is gradually increased, the most favourable opposition shell depth of aluminum plastic film increases, when R2 is greater than 24.00m, most
Favourable opposition shell depth is greater than 9.00mm;After R2 increases to 30.00m, the amplification of most favourable opposition shell depth is gradually reduced.When R2 value exists
When between 25.00mm~35.00mm, aluminum plastic film molding is good, and surface is smooth non-wrinkled.
Table 3
d | Most favourable opposition shell depth | Form situation |
0.10 | 1.22 | It breaks through |
0.30 | 2.74 | It breaks through |
0.50 | 5.79 | It breaks through |
0.70 | 7.28 | A small amount of gauffer |
0.90 | 8.95 | A small amount of gauffer |
1.00 | 9.23 | Molding is good |
1.10 | 9.51 | Molding is good |
1.30 | 9.79 | Molding is good |
1.50 | 10.07 | Molding is good |
1.70 | 10.35 | Molding is good |
1.90 | 10.63 | Molding is good |
2.00 | 10.91 | Molding is good |
2.10 | 11.19 | Molding is good |
2.30 | 11.47 | Molding is good |
2.50 | 11.75 | Molding is good |
2.70 | 12.03 | Molding is good |
2.90 | 12.31 | Molding is good |
3.00 | 12.59 | Molding is good |
3.10 | 12.87 | A small amount of gauffer |
3.30 | 13.15 | A small amount of gauffer |
3.50 | 13.85 | A large amount of gauffers |
According to table 3, as d value increases, the most favourable opposition shell depth of aluminum plastic film is gradually increased, when d value be 1.00mm~
When 3.00mm, most favourable opposition shell depth is 9.23mm~12.59mm, and is formed good;When d value is 2.50mm~3.00mm,
Most favourable opposition shell depth is 11.75mm~12.59mm, and is formed good.
For the aluminum plastic film used in the present embodiment with a thickness of 152 μm, the radius R1 for choosing side fillet is 5.00mm, tip circle angle
Radius R2 is 30.00mm, limit upper mold 510 groove inner wall and spacing d of the lower die mold core 420 on the second preset direction as
The shell depth of rushing of 2.70mm, aluminum plastic film are 12mm, and rushing shell surface product is 850mmX450mm.
The use principle of molding machine provided in this embodiment is as follows:
Attached drawing 3 is please referred to, 010 former material of aluminum plastic film is laid in lower die 410 before rushing shell processing, starts supercharging device 700
With balancer 800, the drive shaft of supercharging device 700 drives balance base 900, upper mould fixed plate 500 and upper mold 510 whole to lower die
410 movements, 800 additional mechanical supercharging of balancer simultaneously play stable effect.
Attached drawing 4 is please referred to, after upper mold 510 is contacted with lower die 410, the nip portion at 510 edge of upper mold and the framework of lower die 410
Cooperation flattens, compresses aluminum plastic film 010;Then, upper mold 510 pushes framework, and lower die mold core 420 will jack up in the middle part of aluminum plastic film 010
And enter in groove, aluminum plastic film 010 is gone out to the shape of needs.
Attached drawing 5 is please referred to, after aluminum mold 010 forms, supercharging device 700 and balancer 800 drive balance base 900, upper mold
Mounting plate 500 and upper mold 510 are whole steadily far from lower die 410.
This molding die is cooperated by setting upper die and lower die, and lower die mold core can be stretched out relative to the framework of lower die, upper mold
With the groove for accommodating lower die mold core, aluminum plastic film is compressed using framework and upper mold edge mate, utilizes lower die mold core and upper mold
Groove cooperation carries out aluminum plastic film to rush shell, compact-sized, simple, and effectively can compress and rush shell;In addition it is arranged in lower die mold core
Tip circle angle and side fillet, and optimize radius of corner in the case where guaranteeing that aluminum plastic film is not broken through, reach the bigger shell depth and more of rushing
Big shaping area.
This molding machine increases mold forced area by setting balancing device, by setting balancer come additional mechanical supercharging and
Stablize mold, keep mold stress more uniform, in the aluminum plastic film of punching press large area, it is not easy to occur due to aluminum plastic film part by
Power is excessive and the case where rupture, meet rush shell process big depth, big shaping area aluminum plastic film needs.
This molding machine can rush the aluminum plastic film that shell processes big depth, big shaping area, and cabinet leg, die setting base
It is additionally arranged at the bottom of groined type rib, strengthens overall stiffness and bending resistance.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of molding machine, which is characterized in that including device noumenon, being equipped in described device ontology can be along the first default side
It connect to the die assembly of relative motion, the supercharging device for driving the die assembly mobile and with the die assembly
The connection area of balancing device, the balancing device and the die assembly is greater than the connection of the supercharging device and balancing device
Area.
2. molding machine according to claim 1, which is characterized in that be additionally provided in described device ontology for installation mold
The upper mould fixed plate of component and lower mold mounting plate, the upper mould fixed plate and balancing device are sequentially connected, the lower mold mounting plate
Fixed setting.
3. molding machine according to claim 2, which is characterized in that the die assembly includes lower die and upper mold, described
Lower die is fixedly connected with the lower mold mounting plate, and the upper mold is fixedly connected with the upper mould fixed plate.
4. molding machine according to claim 2 or 3, which is characterized in that described device ontology is described equipped with being parallel to
The guide rod of first preset direction, the upper mould fixed plate are connect with the guide rod by linear bearing.
5. molding machine according to claim 4, which is characterized in that the balancing device includes balance base, the pressurization
Device, balance base, upper mould fixed plate are sequentially connected, and connection area is sequentially increased.
6. molding machine according to claim 5, which is characterized in that device noumenon further includes having flexible shaft balancing
Device, the supercharging device include telescopic drive shaft, and the drive shaft is parallel with the telescopic shaft, the drive shaft, described
Telescopic shaft is symmetrically disposed on the balancing device.
7. molding machine according to claim 4, which is characterized in that the quantity of the guide rod is multiple and arranged symmetrically
In the upper mould fixed plate surrounding.
8. molding machine according to claim 4, which is characterized in that the upper mould fixed plate is in rectangle, the rectangular edges
The through-hole that edge is symmetrically arranged with, the through-hole is interior to be equipped with guide rod, and the guide rod is connect with the through-hole by linear bearing.
9. molding machine according to claim 6, which is characterized in that the upper mould fixed plate, the balance base are square
Shape, on the symmetry axis for being fixed on the upper mould fixed plate, the drive shaft of the supercharging device is fixed on flat the balance base
Weigh the position of form center of seat, the quantity of the balancer be it is multiple, the telescopic shaft of the balancer is centered on the position of form center
It is symmetrical arranged.
10. molding machine according to claim 2, which is characterized in that the lower mold mounting plate and described device ontology bottom
Portion is provided with groined type rib.
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CN201820781282.7U CN208127348U (en) | 2018-05-23 | 2018-05-23 | A kind of molding machine |
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Address after: 570100 206-1, room 1, 1 amber orchid, 86 Qiongshan Road, Meilan District, Haikou, Hainan. Patentee after: Haikou Bangxing New Energy Technology Co.,Ltd. Address before: 570100 206-1, room 1, 1 amber orchid, 86 Qiongshan Road, Meilan District, Haikou, Hainan. Patentee before: HAIKOU BOAO BANGXING NEW ENERGY TECHNOLOGY Co.,Ltd. |