CN110271142A - Double material laptop case injection forming methods - Google Patents
Double material laptop case injection forming methods Download PDFInfo
- Publication number
- CN110271142A CN110271142A CN201910701523.1A CN201910701523A CN110271142A CN 110271142 A CN110271142 A CN 110271142A CN 201910701523 A CN201910701523 A CN 201910701523A CN 110271142 A CN110271142 A CN 110271142A
- Authority
- CN
- China
- Prior art keywords
- laptop case
- forming methods
- glue runner
- double
- injection forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 61
- 238000002347 injection Methods 0.000 title claims abstract description 22
- 239000007924 injection Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003292 glue Substances 0.000 claims abstract description 32
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 11
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 239000004417 polycarbonate Substances 0.000 claims abstract description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 6
- 239000004917 carbon fiber Substances 0.000 claims abstract description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 210000000746 body region Anatomy 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000003365 glass fiber Substances 0.000 claims abstract description 4
- 239000000155 melt Substances 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 9
- 238000000465 moulding Methods 0.000 description 6
- 239000011257 shell material Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 239000004425 Makrolon Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1603—Multi-way nozzles specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
- B29C2045/2709—Gates with a plurality of mould cavity inlets in close proximity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3481—Housings or casings incorporating or embedding electric or electronic elements
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to technical field of mold, are related to a kind of double material laptop case injection forming methods, and step includes: to melt polycarbonate and the carbon fiber heat of mixing；Polycarbonate and the glass fibre heat of mixing are melted；The first material of melting is injected into glue runner from the direction perpendicular to plate face to the type chamber in product main body region simultaneously by length of flow identical several first；After first opens 1s into glue runner, the second material of melting is injected to the type chamber of product antenna area simultaneously by side of the length of flow identical several second into glue runner from plate face, stop after 0.2~0.3s, the laptop case of double materials can be formed after the cooling period.The present invention forms laptop case by the way of successively two kinds of materials of injection, and the bond strength at interface is good, and die cost is saved, and shaping efficiency is high, and structure precision is high.
Description
Technical field
The present invention relates to technical field of mold, in particular to a kind of double material laptop case injection forming methods.
Background technique
The shell of some laptops in the market is by made of injection molding.Because of intensity requirement, in plate face
The makrolon material of carbon fiber-containing can be selected.Although carbon fiber is helpful to the intensity of makrolon material, works as and be used in
When on a kind of our A shell material, the electromagnetic wave shielding having will affect the signal of antenna area.To this problem, it is necessary to
It is used as and replaces in the material that antenna area forms another electromagnetic wave shielding difference, but there is two kinds of materials on shell at this time
Material, bond quality is a difficult point.
Insert molding is generally used in conventional art or forms two methods twice, but respectively has disadvantage:
Insert molding is to be separately formed two parts of shell to be then inserted into installation, so needing to use two molds.Cause
It is always shunk for material after molding, so form accuracy is difficult to control, this just makes installation that bigger problem occur.
Molding twice is first to form a part of material in one set of die, and the bigger mould of another set of type chamber is put into after solidification
In tool, another material forming and hardening then is allowed in the part that type chamber does not fill up again.Because two kinds of material solidifications have successively,
Seam crossing easily goes wrong.
It is therefore desirable to design the new technique of one kind preferably to manufacture the laptop case of double materials.
Summary of the invention
The main purpose of the present invention is to provide a kind of double material laptop case injection forming methods, can low cost,
High efficiency, the manufacture for carrying out double material laptop cases in high pass rate.
The present invention is achieved through the following technical solutions above-mentioned purpose: a kind of double material laptop case injection forming methods,
Step includes:
1. first material melts: mixing polycarbonate with carbon fiber with mass ratio 5:1, be heated to 320 DEG C of heat and melt；
2. second material melts: mixing polycarbonate with glass fibre with mass ratio 2:1, be heated to 320 DEG C of heat and melt；
3. into glue: by the first material of melting by length of flow identical several first into glue runner from perpendicular to plate face
Direction inject the type chamber in product main body region simultaneously；After first opens 1s into glue runner, the second material of melting is passed through into stream
The type chamber of product antenna area is injected in dynamic side of the length identical several second into glue runner from plate face simultaneously, after 0.2~
0.3s stops, and material can form the laptop case of double materials after solidifying.
Specifically, described first is split into eight outlets of four column of two rows into glue runner, described second divides into glue runner
For eight outlets of a row eight column.
Further, described first divides into the thin oral area that the outlet that glue runner enters type chamber is equipped with a reduced radius,
Described second is equipped with a return portion into the outlet that glue runner enters type chamber.
Specifically, the product plate face with a thickness of 1.5~1.8mm.
Further, the step 3. in maximum injection pressure be 124.0~125.0Mpa
Specifically, 3. it is 120 DEG C that the step enters cavity temperature by die heater control material, after the completion of injection, then allow
Cavity temperature is reduced to 25 DEG C, cooling waiting time 20s.
By adopting the above technical scheme, the beneficial effect of technical solution of the present invention is:
The present invention forms laptop case by the way of successively two kinds of materials of injection, and the bond strength at interface is good, mold
Cost savings, shaping efficiency is high, and structure precision is high, shortens CT Cycle Time.
Detailed description of the invention
Fig. 1 is the top view of laptop case；
Fig. 2 is the stereoscopic schematic diagram of mould flow passage structure.
Digital representation in figure:
11- body region, 12- antenna area；
21- first is into glue runner, the thin oral area of 211- point, and 22- second is into glue runner, 221- return portion.
Specific embodiment
Invention is further described in detail combined with specific embodiments below.
Embodiment:
As depicted in figs. 1 and 2, a kind of double material laptop case injection forming methods of the invention, step include:
1. first material melts: mixing polycarbonate with carbon fiber with mass ratio 5:1, be heated to 320 DEG C of heat and melt；
2. second material melts: mixing polycarbonate with glass fibre with mass ratio 2:1, be heated to 320 DEG C of heat and melt；
3. into glue: by the first material of melting by length of flow identical several first into glue runner from perpendicular to plate face
Direction inject the type chamber in product main body region simultaneously；After first opens 1s into glue runner, the second material of melting is passed through into stream
The type chamber of product antenna area is injected in dynamic side of the length identical several second into glue runner from plate face simultaneously, after 0.2~
0.3s stops, and material can form the laptop case of double materials after solidifying.
First material can first occupy the type chamber far from antenna area 12, then the chain-dotted line with second material in Fig. 1 again
Nearby converge.Because two kinds of materials are easier mutually to melt all using polycarbonate as dispersing agent, in injection moulding process median surface,
Will not occur apparent bonding wire after molding, bond strength is good.Moulding process only needs to complete in one set of die, saves
Development cost.Injection time less than 1.3s, just directly obtains the laptop case of target shape, does not need to carry out again after cooling
Assembly, structure precision are also higher.
As shown in Fig. 2, first is split into eight outlets of four column of two rows into glue runner 21, second is split into glue runner 22
Eight outlets of one row eight column.First so that first material is uniformly diffused into flat type into glue runner 21 intracavitary, according to product
The rectangular configuration of plate face is suitble to using eight outlet settings, is also can guarantee in this way first into the entrance of glue runner 21 to each outlet
Situation is almost the same.Second into glue runner 22 is then uniformly being spread on one side close to type chamber, also can guarantee entrance to each
The case where outlet, is almost the same.
As shown in Fig. 2, first is equipped with the thin oral area point an of reduced radius into the outlet that glue runner 21 enters type chamber
211, second is equipped with a return portion 221 into the outlet that glue runner 22 enters type chamber.Thin oral area point 211 and return portion
221 be all for increase material by resistance, thus material can be made also more uniform under the uniform release action of pressure
Ground is toward the intracavitary diffusion of type.Reduce change in shape caused by product density unevenness.
Product plate face with a thickness of 1.5~1.8mm.The board thickness of product is exactly the thickness of type chamber, this section allows object
Material is easy diffusion, and guarantees plate face intensity.
Step 3. in injection pressure be 124.0~125.0Mpa.Empirical discovery uses in suitable thickness range
The pressure of 124.0~125.0Mpa can allow material diffusion velocity relatively reasonable.
3. it is 120 DEG C that step enters cavity temperature by die heater control material, after the completion of injection, then cavity temperature is allowed to be reduced to
25 DEG C, cooling waiting time 20s.Die heater changes the flowability of material by changing cavity temperature, allows the material of melting
Quickly solidify and discharge internal stress, the product after such de- material is just avoided that distortion.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.
Claims (6)
1. a kind of double material laptop case injection forming methods, it is characterised in that step includes:
1. first material melts: mixing polycarbonate with carbon fiber with mass ratio 5:1, be heated to 320 DEG C of heat and melt；
2. second material melts: mixing polycarbonate with glass fibre with mass ratio 2:1, be heated to 320 DEG C of heat and melt；
3. into glue: by the first material of melting by length of flow identical several first into glue runner from the side perpendicular to plate face
To the type chamber for injecting product main body region simultaneously；After first opens 1s into glue runner, the second material of melting is passed through into flowing length
It spends the identical several second sides into glue runner from plate face while injecting the type chamber of product antenna area, after 0.2~0.3s
Stop, material can form the laptop case of double materials after solidifying.
2. double material laptop case injection forming methods according to claim 1, it is characterised in that: described first into glue
Runner is split into eight outlets of four column of two rows, and described second is split into eight outlets of a row eight column into glue runner.
3. double material laptop case injection forming methods according to claim 2, it is characterised in that: described first into glue
The outlet that runner enters type chamber is equipped with the thin oral area point an of reduced radius, and described second enters the outlet of type chamber into glue runner
It is equipped with a return portion.
4. double material laptop case injection forming methods according to claim 1, it is characterised in that: the product plate face
With a thickness of 1.5~1.8mm.
5. double material laptop case injection forming methods according to claim 4, it is characterised in that: the step 3. in
Maximum injection pressure be 124.0~125.0Mpa.
6. double material laptop case injection forming methods according to claim 5, it is characterised in that: the step 3. by
It is 120 DEG C, after the completion of injection that die heater control material, which enters cavity temperature, then cavity temperature is allowed to be reduced to 25 DEG C, when cooling waits
Between 20s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910701523.1A CN110271142A (en) | 2019-07-31 | 2019-07-31 | Double material laptop case injection forming methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910701523.1A CN110271142A (en) | 2019-07-31 | 2019-07-31 | Double material laptop case injection forming methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110271142A true CN110271142A (en) | 2019-09-24 |
Family
ID=67966019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910701523.1A Pending CN110271142A (en) | 2019-07-31 | 2019-07-31 | Double material laptop case injection forming methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110271142A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113715265A (en) * | 2021-08-31 | 2021-11-30 | 合肥旭弘塑胶制品有限公司 | Movable part mechanism |
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|---|---|---|---|---|
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| JP2004001424A (en) * | 2002-04-04 | 2004-01-08 | Canon Inc | Injection molding method, injection mold, resin molded product and insert resin part |
| CN101168279A (en) * | 2006-10-26 | 2008-04-30 | 中强光电股份有限公司 | Die feeding structure and manufacturing method for casing thereof |
| CN101482764A (en) * | 2008-01-11 | 2009-07-15 | 联想（新加坡）私人有限公司 | Electronic devices |
| CN102173036A (en) * | 2011-03-16 | 2011-09-07 | 苏州腾行精密模具有限公司 | Cold-runner rubber injection molding mold structure |
| CN102725118A (en) * | 2010-01-13 | 2012-10-10 | 东丽株式会社 | Injection molded article and production method thereof |
| CN202781679U (en) * | 2012-09-13 | 2013-03-13 | 晟扬精密模具（昆山）有限公司 | Thermoplastic flow channel of notebook die |
| CN103358457A (en) * | 2013-08-05 | 2013-10-23 | 格林精密部件（惠州）有限公司 | Molding process for high-strength injection-molded part |
| CN105216243A (en) * | 2015-10-21 | 2016-01-06 | 苏州春秋电子科技有限公司 | Notebook A shell injection mould and injection moulding process |
| CN109624223A (en) * | 2017-10-09 | 2019-04-16 | 苏州易昌泰塑胶有限公司 | A kind of injection mold and its injection moulding process of notebook screen rear cover |
-
2019
- 2019-07-31 CN CN201910701523.1A patent/CN110271142A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1426347A (en) * | 2000-02-24 | 2003-06-25 | 东丽株式会社 | FRP molded article and method of producing same |
| JP2004001424A (en) * | 2002-04-04 | 2004-01-08 | Canon Inc | Injection molding method, injection mold, resin molded product and insert resin part |
| CN101168279A (en) * | 2006-10-26 | 2008-04-30 | 中强光电股份有限公司 | Die feeding structure and manufacturing method for casing thereof |
| CN101482764A (en) * | 2008-01-11 | 2009-07-15 | 联想（新加坡）私人有限公司 | Electronic devices |
| CN102725118A (en) * | 2010-01-13 | 2012-10-10 | 东丽株式会社 | Injection molded article and production method thereof |
| CN102173036A (en) * | 2011-03-16 | 2011-09-07 | 苏州腾行精密模具有限公司 | Cold-runner rubber injection molding mold structure |
| CN202781679U (en) * | 2012-09-13 | 2013-03-13 | 晟扬精密模具（昆山）有限公司 | Thermoplastic flow channel of notebook die |
| CN103358457A (en) * | 2013-08-05 | 2013-10-23 | 格林精密部件（惠州）有限公司 | Molding process for high-strength injection-molded part |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113715265A (en) * | 2021-08-31 | 2021-11-30 | 合肥旭弘塑胶制品有限公司 | Movable part mechanism |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190924 |