CN208452120U - A kind of quick injection molding mold of complex precise notebook computer casing - Google Patents
A kind of quick injection molding mold of complex precise notebook computer casing Download PDFInfo
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- CN208452120U CN208452120U CN201821136378.4U CN201821136378U CN208452120U CN 208452120 U CN208452120 U CN 208452120U CN 201821136378 U CN201821136378 U CN 201821136378U CN 208452120 U CN208452120 U CN 208452120U
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- plate
- injection molding
- notebook computer
- type chamber
- computer casing
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 229920003023 plastic Polymers 0.000 abstract description 25
- 239000004033 plastic Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 5
- 239000004568 cement Substances 0.000 abstract description 2
- 230000008602 contraction Effects 0.000 abstract description 2
- 239000012943 hotmelt Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 229920006351 engineering plastic Polymers 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a kind of quick injection molding mold of complex precise notebook computer casing, including preceding mould and rear mold, preceding mould includes fixed plate and front template, rear mold includes rear pattern plate, positioning plate, support block and rear panel, front template and rear pattern plate closed forming cavity, rear panel is equipped with ejector pin mechanism, it is characterised in that: further includes table top, hot runner mechanism, negative pressure air flue, heating system and cooling system.The structure design of injection forming mold provided by the utility model is sucked out type chamber air to form negative pressure state before injection molding, in injection molding, the plastic material of hot melt state can be rapidly filled with type chamber, greatly improve the surface quality of injection efficiency and plastic cement products, so as to shorten the production cycle, reinforce the combination effect to metal plate and plastic frame, plastic frame is unlikely to deform after moulding, the effect of contraction of plastic frame is reduced, the bond strength of metal plate and plastic frame is enhanced.
Description
Technical field
The utility model belongs to injection-moulding device field, and in particular, to a kind of complex precise notebook computer casing it is fast
Fast injection forming mold.
Background technique
The material of notebook computer casing is mainly engineering plastics or metal at present, because of engineering plastics low cost, light weight
The characteristics of getting up early be widely used in produce notebook computer casing, in recent years, the notebook computer casing of metal material is because of it
High-quality appearance, and its material capability of the processing of complicated, accurate notebook is adapted to, and metal itself is better than engineering
The heat dissipation performance of plastics, so that the notebook computer casing of metal material gradually rises.But the all-metal material in routine use
Notebook computer casing occur to scrape and collision after, be more also easy to produce the scratch of unrepairable and recessed compared with engineering plastics shell
It falls into, the aesthetics largely effected on.For this purpose, our company is based on many years knowhow and research combines the digital product market demand, design
The hardened computer casing forms for closing outer plastic frames of various metals, solve notebook computer casing and have both excellent heat radiation
The design scheme that can, adapt to processing topology requirement inside complex precise, have the damage of preferable anticollision, in the market this kind of form
Notebook computer casing also gradually rises.
But currently, produce the notebook computer casing of this kind of form there is no a kind of processing method rapidly and efficiently, and
The notebook computer casing metal of this kind of form and plastics junction air-tightness and adhesion strength are poor currently on the market, seek its original
Production equipment and production technology because being the single material computer casing of tradition mismatch.
Therefore, the above problem is urgently to be resolved.
Utility model content
Purpose of utility model: for overcome the deficiencies in the prior art, the purpose of the utility model is to provide one kind to be adapted to
Mold is used in the quick injection molding production of complex precise notebook computer casing.
Technical solution: the utility model proposes a kind of quick injection molding moulds of complex precise notebook computer casing
Tool, including preceding mould and rear mold, the preceding mould from top to bottom successively include fixed plate and front template, the rear mold edge along the vertical direction
Vertical direction from top to bottom successively includes rear pattern plate, positioning plate, support block and rear panel, and the front template is closed to be formed with rear pattern plate
Type chamber, the rear panel are equipped with ejector pin mechanism, and the located plate of the thimble of the ejector pin mechanism and rear pattern plate penetrate type chamber,
Be characterized in that: the type is intracavitary to be provided with table top for fixed metal plate positioned at rear pattern plate upper surface, on the fixed plate plate
Equipped with the hot runner mechanism through front template communicate-type chamber, the injection nozzle of the hot runner mechanism is located at table top side；The rear mold
It offers and is communicated in several with type chamber, outside and vacuum equipment is to logical negative pressure air flue in plate, set in the front template and rear pattern plate
It is equipped with the heating system and cooling system of coil-shaped chamber.
The injection mold that the utility model is proposed is based on heating system and cooling system, complete with RHCM technology to realize
The injection molding processing of pairs of plastic frame, injection molding negative pressure structure design cooperation ejector pin mechanism realize quick injection molding.
Further, a kind of quick injection molding mold of above-mentioned complex precise notebook computer casing, feature exist
Include the gas nozzle communicated positioned at rear pattern plate upper surface with type chamber, internally opened up by rear pattern plate lateral wall in, the negative pressure air flue
Main airway, the gas nozzle is connected by vertical branch airway with main airway.
The air passage structure of the above-mentioned optimization structure calmed the anger that is negative, main line bonus point branch effectively can cooperate vacuum equipment to extract
The intracavitary air of type forms vacuum effect.
Further, a kind of quick injection molding mold of above-mentioned complex precise notebook computer casing, feature exist
In the main airway and branch airway section are circle, and the section radius of main airway is greater than branch airway section radius.
The section radius of main airway, which is greater than branch airway section radius, can prevent the injection molding residue entered by branch airway from entering master
Block after air flue.
Further, a kind of quick injection molding mold of above-mentioned complex precise notebook computer casing, feature exist
In the gas nozzle is tapered, is less than the connection section with branch airway with the connection section of type chamber.
Cone-shaped air tap can greatly reduce the amount of overflowing into of injection raw material at gas nozzle.
Further, a kind of quick injection molding mold of above-mentioned complex precise notebook computer casing, feature exist
Be equipped with solid-holding slot corresponding with each branch airway upper and lower position in, the main airway bottom, the rear pattern plate lateral wall be equipped with into
Air valve, the solid-holding slot are connected to by the air intake duct opened up in rear pattern plate with intake valve, are fixed with metal in the solid-holding slot
Net.
Groove and metal mesh structure prevent it from accumulating in main airway and hinder for collecting the injection molding residue to be fallen off by branch airway
Plug.
Further, a kind of quick injection molding mold of above-mentioned complex precise notebook computer casing, feature exist
In the solid-holding slot is hemispherical groove, and the metal mesh is bonded setting with hemispherical groove.
Hemispherical groove, which has, preferably accommodates effect, will not occur being easy to take in injection molding residue when residue is discharged
Dead angle.
Further, a kind of quick injection molding mold of above-mentioned complex precise notebook computer casing, feature exist
In the front template lower surface is circumferentially provided with airtight seal ring along type chamber.
The effect of airtight seal ring is to provide better airtight effect when type chamber vacuumizes for type chamber.
Further, a kind of quick injection molding mold of above-mentioned complex precise notebook computer casing, feature exist
In the ejector pin mechanism is Double-ejection machine comprising the secondary pneumatic jack being set on rear panel is connected to secondary pneumatic jack
A top plate and secondary top plate on two output end faces are provided with successively located plate, rear pattern plate and platform on top plate
Face penetrates a thimble of type chamber, is provided with successively located plate, rear pattern plate on the secondary top plate and penetrates table-board to right or left two sides
The secondary thimble of cavity portion is additionally provided with the limit base for limiting secondary top plate stroke on the rear panel.
Double-ejection machine has been mature technology at present, is widely used in the mold of product structure complexity, when demoulding one
Secondary thimble and secondary thimble advance with cloth, and when a thimble ejection position is defined, secondary thimble will continue to advance, until producing
Pint is fallen.This programme guarantees the smooth ejection device of produced notebook computer casing by the ejection effect of Double-ejection machine.
Above-mentioned technical proposal can be seen that the utility model has the following beneficial effects: note provided by the utility model
Molding die tool carries out unique texture specifically for the notebook computer casing of metal bonding plastic frame and production technology is set
Meter reinforces the combination effect to metal plate and plastic frame, and plastic frame is unlikely to deform after moulding, reduces plastic edge
The effect of contraction of frame enhances the bond strength of metal plate and plastic frame；In addition, the structure of the molding die of the utility model is set
Meter is sucked out type chamber air to form negative pressure state before injection molding, and in injection molding, the plastic material for heating state can quickly fill
Full type chamber, greatly improves the surface quality of injection efficiency and plastic cement products, so as to shorten the production cycle.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of prepared notebook computer casing in the utility model embodiment 1；
Fig. 2 is the overall structure diagram of quick injection molding mold in the utility model embodiment 1；
Fig. 3 is the partial enlargement structural representation in Fig. 2 at A；
In figure:
100 metal plates, 200 plastic frames, 300 injection moldings combine extension, 400 grooves;
1 fixed plate, 2 front templates, 3 rear pattern plates, 31 table tops, 4 positioning plates, 5 support blocks, 6 rear panels, 7 type chambers, 8 ejector pin mechanisms,
81 top plates, 82 2 top plates, 83 thimbles, 84 2 thimbles, 85 limit bases, 9 hot runner mechanisms, 10 negative pressure air flues,
101 gas nozzles, 102 main airways, 103 branch airway, 11 solid-holding slots, 12 air intake ducts, 13 airtight seal rings.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
Describe the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " multiple "
It is two or more, unless otherwise restricted clearly.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it
"lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to
Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above "
One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special
Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only
Indicate that first feature horizontal height is less than second feature.
Embodiment 1
For metal plate combination plastic edge frame notebook computer casing air-tightness and poor bonding strength on the market at present
Problem, Fig. 1 show a kind of New-type computer shell comprising the metal plate 100 of finishing preparation in advance, and and metal plate
The plastic frame 200 that 100 injection moldings combine, the metal plate are circumferentially provided with the extension in conjunction with the injection molding of 100 one of metal plate
300, the step surface and metal plate 100 that the plastic frame 200 is combined extension 300 to cooperate by a circle of inner ring with injection molding
Connecting shaping, the injection molding, which combines, has several grooves 400 in extension 300, and the groove 400 is circular groove, can also select
Select dovetail groove, square groove etc.；The Novel laptop shell has better bond strength.
As shown in Fig. 2, being processed outside a kind of complex precise laptop used to prepare above-mentioned notebook computer casing
The quick injection molding mold of shell, including preceding mould and rear mold, the preceding mould from top to bottom successively include fixed plate 1 along the vertical direction
With front template 2, the rear mold from top to bottom successively includes rear pattern plate 3, positioning plate 4, support block 5 and rear panel 6, institute along the vertical direction
Front template 2 and 3 closed forming cavity 7 of rear pattern plate are stated,
The rear panel 6 is equipped with ejector pin mechanism 8, and the located plate 4 of the thimble of the ejector pin mechanism 8 and rear pattern plate 3 penetrate
Type chamber 7, it is characterised in that: it is located at 3 upper surface of rear pattern plate in the type chamber 7 and is provided with the table top 31 for fixed metal plate 100,
The fixed plate 1 is equipped with the hot runner mechanism 9 through 2 communicate-type chamber 7 of front template, and the injection nozzle of the hot runner mechanism 9 is located at
31 side of table top, and be arranged in pairs；It offers in the rear pattern plate 3 and to communicate in several with type chamber 7, be communicated outside with vacuum equipment
The heating system and cooling system of coil-shaped chamber 7 are provided in negative pressure air flue 10, the front template 2 and rear pattern plate 3.
Wherein, the negative pressure air flue 10 includes the gas nozzle 101 communicated positioned at 3 upper surface of rear pattern plate with type chamber 7, and by rear
The main airway 102 that 3 lateral wall of template internally opens up, the gas nozzle 101 pass through vertical branch airway 103 and 102 phase of main airway
Connection.
Wherein, the main airway 102 and 103 section of branch airway are circle, and the section radius of main airway 102 is greater than branch gas
103 section radius of road.
Wherein, the gas nozzle 101 is tapered, and the connection for being less than itself and branch airway 103 with the connection section of type chamber 7 is cut
Face.
Wherein, 102 bottom of main airway is equipped with solid-holding slot 11 corresponding with each 103 upper and lower position of branch airway, after described
3 lateral wall of template is equipped with intake valve, and the solid-holding slot 11 is connected to by the air intake duct 12 opened up in rear pattern plate 3 with intake valve,
Metal mesh is fixed in the solid-holding slot 11.
Wherein, the solid-holding slot 11 is hemispherical groove, and the metal mesh is bonded setting with hemispherical groove.
Wherein, 2 lower surface of front template is circumferentially provided with airtight seal ring 130 along type chamber 7.
Wherein, the ejector pin mechanism 8 is Double-ejection machine comprising the secondary pneumatic jack 81 being set on rear panel, respectively
The top plate 81 and secondary top plate 82 being connected on 80 liang of output end faces of secondary pneumatic jack, be provided on a top plate 81 according to
Secondary located plate 4, rear pattern plate 3 and table top 31 penetrate a thimble 83 of type chamber 7, are provided on the secondary top plate 82 and successively pass through
Positioning plate 4, rear pattern plate 3 penetrate the secondary thimble 84 of 31 left and right sides type chamber of table top, 7 part, are additionally provided on the rear panel 6
For limiting the limit base 85 of secondary 82 stroke of top plate.
Quick injection molding mold based on a kind of above-mentioned complex precise notebook computer casing prepares notes shown in Fig. 1
The processing technology of this computer casing, including the following steps:
1. placing metal plate: according to design requirement, preparatory finishing prepares metal plate 100 and circumferentially stays injection molding to metal plate
In conjunction with extension 300, the injection molding, which combines, has several grooves 400 being pre-machined in extension 300；Extension 300 is combined in injection molding
After surface coating combines glue-line, metal plate 100 is placed on the table top 31 of injection mold rear pattern plate 3；
2. type chamber Negative pressure: preceding mould and rear mold being molded, after preceding mould and rear mold molding, open intake valve, using true
Null device extracts the air in negative pressure air flue 10 and type chamber 7, and supplements air on a small quantity by air intake duct 12, at this point, last injection molding
Remain on the injection molding residue at gas nozzle 101 in the process, or fall into the injection molding residue in solid-holding slot 11 on metal mesh, in negative pressure
It is extracted out outside mold under effect with air, is then closed intake valve, pass through negative pressure air flue 10 for the sky in type chamber 7 using vacuum equipment
Gas extraction makes in negative pressure state in type chamber 7, and heating system preheats type chamber 7；
3. injection molding: after the completion of preheating, preheating system is closed, by the plastic material of molten condition through hot runner mechanism 9
Injection type chamber 7 makes plastic material form product full of type chamber 7, and opens cooling system；
4. demoulding: after die sinking, ejector pin mechanism 8 works, and once when ejection, one time thimble 83 pushes up metal plate 100, secondary thimble
84 synchronous top plastic frames 200；Thimble 83 in place after, carry out Double-ejection, secondary thimble 84 continues to push plastic frame
200, demould shell, ejector pin mechanism 8 resets.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvement can also be made, these improvement also should be regarded as
The protection scope of the utility model.
Claims (8)
1. a kind of quick injection molding mold of complex precise notebook computer casing, including preceding mould and rear mold, the preceding mould edge
Vertical direction from top to bottom successively includes that fixed plate (1) and front template (2), the rear mold are from top to bottom successively wrapped along the vertical direction
Include rear pattern plate (3), positioning plate (4), support block (5) and rear panel (6), the front template (2) and rear pattern plate (3) closed forming cavity
(7), the rear panel (6) is equipped with ejector pin mechanism (8), the located plate of thimble (4) and rear pattern plate of the ejector pin mechanism (8)
(3) type chamber (7) are penetrated, it is characterised in that: be located at rear pattern plate (3) upper surface in the type chamber (7) and be provided with for fixing metal
The table top (31) of plate (100), the fixed plate (1) are equipped with the hot runner mechanism (9) through front template (2) communicate-type chamber (7), institute
The injection nozzle for stating hot runner mechanism (9) is located at table top (31) side；Several interior and type chamber (7) are offered in the rear pattern plate (3)
The negative pressure air flue (10) communicate, communicated outside with vacuum equipment is provided with coil-shaped chamber in the front template (2) and rear pattern plate (3)
(7) heating system and cooling system.
2. a kind of quick injection molding mold of complex precise notebook computer casing according to claim 1, feature
It is, the negative pressure air flue (10) includes the gas nozzle (101) communicated positioned at rear pattern plate (3) upper surface with type chamber (7), and by rear
The main airway (102) that template (3) lateral wall internally opens up, the gas nozzle (101) pass through vertical branch airway (103) and main gas
Road (102) is connected.
3. a kind of quick injection molding mold of complex precise notebook computer casing according to claim 2, feature
It is, the main airway (102) and branch airway (103) section are circle, and the section radius of main airway (102) is greater than branch airway
(103) section radius.
4. a kind of quick injection molding mold of complex precise notebook computer casing according to claim 2, feature
It is, the gas nozzle (101) is tapered, and the connection section of itself and branch airway (103) is less than with the connection section of type chamber (7).
5. a kind of quick injection molding mold of complex precise notebook computer casing according to claim 2, feature
It is, main airway (102) bottom is equipped with solid-holding slot (11) corresponding with each branch airway (103) upper and lower position, the rear mold
Plate (3) lateral wall is equipped with intake valve, and the solid-holding slot (11) passes through rear pattern plate (3) the interior air intake duct (12) and intake valve opened up
Connection, the solid-holding slot (11) is interior to be fixed with metal mesh.
6. a kind of quick injection molding mold of complex precise notebook computer casing according to claim 5, feature
It is, the solid-holding slot (11) is hemispherical groove, and the metal mesh is bonded setting with hemispherical groove.
7. a kind of quick injection molding mold of complex precise notebook computer casing according to claim 1, feature
It is, front template (2) lower surface is circumferentially provided with airtight seal ring (13) along type chamber (7).
8. a kind of quick injection molding mold of complex precise notebook computer casing according to claim 1, feature
It is, the ejector pin mechanism (8) is Double-ejection machine comprising the secondary pneumatic jack being set on rear panel is connected to two
A top plate (81) and secondary top plate (82) on secondary (80) two output end face of pneumatic jack, be provided on a top plate (81) according to
Secondary located plate (4), rear pattern plate (3) and table top (31) penetrate a thimble (83) of type chamber (7), on the secondary top plate (82)
Be provided with successively located plate (4), rear pattern plate (3) penetrates the secondary thimble (84) of type chamber (7) part at left and right sides of table top (31),
The limit base (85) for limiting secondary top plate (82) stroke is additionally provided on the rear panel (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821136378.4U CN208452120U (en) | 2018-07-18 | 2018-07-18 | A kind of quick injection molding mold of complex precise notebook computer casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821136378.4U CN208452120U (en) | 2018-07-18 | 2018-07-18 | A kind of quick injection molding mold of complex precise notebook computer casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208452120U true CN208452120U (en) | 2019-02-01 |
Family
ID=65180632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821136378.4U Expired - Fee Related CN208452120U (en) | 2018-07-18 | 2018-07-18 | A kind of quick injection molding mold of complex precise notebook computer casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208452120U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109795073A (en) * | 2019-03-11 | 2019-05-24 | 杨文良 | The spectacle-frame and leg of spectacles and production method of a kind of metal in conjunction with plastic cement |
-
2018
- 2018-07-18 CN CN201821136378.4U patent/CN208452120U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109795073A (en) * | 2019-03-11 | 2019-05-24 | 杨文良 | The spectacle-frame and leg of spectacles and production method of a kind of metal in conjunction with plastic cement |
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Granted publication date: 20190201 |