CN116512516A - Mobile phone shell and manufacturing process thereof - Google Patents
Mobile phone shell and manufacturing process thereof Download PDFInfo
- Publication number
- CN116512516A CN116512516A CN202210687833.4A CN202210687833A CN116512516A CN 116512516 A CN116512516 A CN 116512516A CN 202210687833 A CN202210687833 A CN 202210687833A CN 116512516 A CN116512516 A CN 116512516A
- Authority
- CN
- China
- Prior art keywords
- mobile phone
- shell
- die
- membrane
- back shell
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 239000012528 membrane Substances 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000001746 injection moulding Methods 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 239000004033 plastic Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000007639 printing Methods 0.000 claims description 4
- 239000000047 product Substances 0.000 description 21
- 238000005516 engineering process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000010985 leather Substances 0.000 description 6
- 238000005034 decoration Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010112 shell-mould casting Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229920001875 Ebonite Polymers 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 235000008766 Murraya exotica Nutrition 0.000 description 1
- 240000001899 Murraya exotica Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a mobile phone shell, which comprises the following steps: preparing an inner film and an outer film, wherein a predetermined surface pattern or color or a transparent sheet or a frosted sheet or the like is formed on at least the outer film; preparing a die, wherein the die comprises a die frame, a front die, a rear die, a die core and the like; setting the front model cavity as a shape with a middle bulge and a peripheral edge groove; placing the inner membrane and the outer membrane into a front mould cavity, performing IMD injection molding to form a back shell and an outer membrane with integrated structures, and forming a groove on one surface of the back shell, to which the outer membrane is attached; and integrally forming an inner membrane on the inner surface of the back shell to form the mobile phone shell. The invention has the advantages that the IMD injection molding process is utilized to mold the back shell and the diaphragm mold cavity of the mobile phone into an integral molding, the process is simplified, the production/inventory cost is reduced, the product manufacturing period is shortened, the production efficiency is improved, the products with elastic hard sheets in the middle of the mobile phone shell and TUP elastic soft glue around the hard sheets can be realized, and the design of the grooves in the mobile phone shell enables the products to be diversified.
Description
Technical Field
The invention relates to the technical field of mobile phone accessories, in particular to a mobile phone shell and a manufacturing process thereof.
Background
With the rapid development of the technology level, the industry of technology cosmetology is newly developed as a new industry. Fashion IT brands evolve with diversification of the market. The design of industry design is more and more fashionable, environment-friendly, light and handy, and is diversified aiming at the increase of mobile phone brands and functions, and the mobile phone protective housing not only serves as an ornament to enable a mobile phone to be a landscape, but also can protect the mobile phone, and is anti-falling, scratch-resistant, waterproof and shockproof. To meet this trend, mobile phone protective cover manufacturers have introduced various products with fine craftsmanship and more unique color patterns. This allows for a greater variety of types of mobile phone covers. The mobile phone protection shell can be divided into: plastic, TPU, silica gel, leather sheath, crystal shell, clean water shell, net shell, environment-friendly PC shell, metal shell, wood shell and the like. The traditional processing technology comprises the following steps: the processes used in the market are injection molding, spraying, printing, ink-jet, laser carving, leather coating, leather sheath, diamond inlaying, oxidizing etching, laser and IMR processes, which are widely applied to various industries at present, and the processes are the earliest consumer products such as notebook shells, mobile phone lenses, various decoration panels of household appliances, automobile instrument panels, automobile interior trim parts, medical instrument panels, cosmetic boxes, children toys and the like.
Disclosure of Invention
In view of the above, the invention provides a mobile phone shell and a manufacturing process thereof, which adopts an in-mold decoration technology (IMD) injection molding process to integrally mold two layers of films and fill plastic layers in the middle, the structure is extremely difficult to delaminate, the integrally molded mobile phone shell has stronger hardness and elasticity, the corners of the mobile phone are difficult to wear, the structure is simple and convenient to use, and the back groove design of the mobile phone shell can enable products to be diversified.
A mobile phone shell molding process comprises the following steps:
s01, preparing an inner membrane and an outer membrane, wherein the outer membrane can be selectively formed into a preset pattern or color or a transparent sheet or a frosted sheet, and different finished products or semi-finished products (called materials in the mobile phone shell industry) can be formed;
s02, preparing a die, wherein the die comprises a die frame, a front die, a rear die, a core and the like;
s03, setting the front model cavity to be in a shape with a convex middle and a side groove at the periphery so as to realize a structure with a concave position in the middle of the back of the mobile phone shell and convex steps at the periphery.
S04, hanging the outer membrane and the inner membrane on the reserved hanging piece positioning posts through a die, carrying out IMD injection molding after membrane closing to form a back shell and an inner membrane of an integrated structure, forming a groove on one surface of the back shell, which is adhered with the outer membrane, and simultaneously integrally forming the inner membrane on the inner surface of the back shell to form the mobile phone shell.
Further, the outer film is formed with a predetermined pattern or color by ink printing.
Further, the inner membrane is integrally formed on the inner surface of the back shell through an injection process.
Further, the outer surface of the inner membrane is provided with a decorative layer, and the decorative layer is optionally printed with a preset texture or pattern or a flannelette or a base fabric.
Further, the outer surface of the outer membrane is provided with a decorative layer, and the decorative layer is optionally further provided with a mounting patch or a veneer, the decorative layer covers the groove, and the groove is formed on the back surface main surface side of the back shell.
Further, the thickness of the decorative layer approximates the depth of the groove.
Further, the decorative layer on the outer surface of the outer film sheet is formed with a 3D decorative layer through a glue dripping process.
Further, after the back shell and the inner membrane and the outer membrane are integrally formed, after the camera hole is punched according to the position of the mobile phone camera, a plastic camera hole is optionally added to be installed or adhered to the punched camera hole, and further, a transparent sheet for protecting the camera hole is optionally adhered to the plastic camera hole.
Further, the back shell is made of TPU material, and the inner membrane and the outer membrane are PET sheets respectively.
And a mobile phone shell which is manufactured by adopting the mobile phone shell molding process.
The invention combines the IMD injection molding process and the TPU injection process by adopting the in-mold decoration technology, can save a set of hard rubber mold, realize low investment, reduce matching among molds, accelerate the speed of producing the mold, reduce one-time injection molding production, realize low cost and high efficiency, realize the elastic hard sheet in the middle of the mobile phone shell and the products with TUP elastic soft rubber on the periphery (the mobile phone shell industry is called as two-in-one), realize the multipurpose of the products by the grooves of the designed products (the mobile phone shell industry is called as two-in-one groove material), and the groove design can be directly taken as the finished product of the mobile phone shell for direct shipment, and also can be added with the leather pasting patch and the glue dropping process in the follow-up process to improve the added value of the finished product.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is evident that the figures in the following description are only some embodiments of the invention, from which other figures can be obtained without inventive effort for a person skilled in the art. In the drawings:
fig. 1 is a schematic diagram of a process flow for manufacturing a mobile phone shell according to an embodiment of the invention.
Fig. 2 is a schematic diagram of an exploded structure of a mobile phone case manufactured according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a main casing of a mobile phone casing according to an embodiment of the present invention.
Fig. 4 is a partially enlarged view of a recess of a mobile phone case according to an embodiment of the present invention.
Fig. 5 is an exploded view of a cell phone shell mold according to an embodiment of the present invention.
Fig. 6 is an explosion schematic diagram of a mobile phone shell without a die core of a die cutter according to an embodiment of the invention.
Wherein,,
100 main housing:
200 back shell
201 groove
300 diaphragm
310 outer film
311 decorative layer
320 inner diaphragm
321 decorative layer
400 bordures
500 camera shooting through hole assembly
501 transparent sheet
600 die carrier
Front mold 601
Rear die 602
Die core 603
Die core 604.
Detailed Description
It is to be understood that the terminology used herein, the specific structural and functional details disclosed are merely representative for the purpose of describing particular embodiments, but that the invention may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
The invention is described in detail below with reference to the attached drawings and alternative embodiments.
1-6, a mobile phone shell molding process comprises the following steps:
s01, preparing an inner membrane 320 and an outer membrane 310, wherein the outer membrane 310 is provided with a preset pattern or color or a transparent sheet or a frosted sheet and the like, and different finished products or semi-finished products (called materials in the industry of mobile phone shells) can be formed;
s02, preparing a mold, wherein the mold comprises a mold frame 600, a front mold 601, a rear mold 602, a core 603 and other mold accessories;
s03, setting the cavity of the front mold 601 as a shape with a convex middle and a side groove at the periphery, so that the structure that a concave position is arranged in the middle of the back of the mobile phone shell and convex steps are arranged at the periphery can be realized, the structure can realize finished product shipment, and post-processing technologies such as leather pasting, paster, glue dripping and the like can be performed by utilizing the concave position in the middle, so that the utilization rate of the mold and the added value of products are improved;
s04, hanging the outer membrane 310 and the inner membrane 320 on the hanging piece positioning posts reserved by a mold, carrying out IMD injection molding after closing the membranes to form a back shell 200 and an outer membrane 310 with integrated structures, forming grooves 201 on one surface of the back shell 200, which is adhered with the outer membrane 310, S05, and integrally forming the inner membrane 320 on the inner surface of the back shell 200 to form the mobile phone shell.
In step S01, a predetermined pattern or color is formed on the outer film sheet 310 by ink printing. Thus, the pre-ink is printed in a predetermined pattern or color, or specific texture, prior to IMD molding, depending on the different product characteristics or user requirements. The outer membrane 310 may also be pre-printed with a pattern or color or a transparent or frosted sheet or the like.
In step S02, the decorative layer 311 on the outer surface of the outer film 310 is further attached or laminated, the decorative layer 311 covers the groove 201, and the groove 201 is formed on the back surface side of the back case 200. The thickness of the decorative layer 311 is close to the depth of the groove 201, and further, the decorative layer 311 is formed with a 3D decorative layer by a glue dropping process.
As shown in fig. 5 to 6, the mold of steps S02 and S03 is a mold particularly modified in the embodiment of the present invention, in which a front mold cavity 601 is set to have a shape of a middle protrusion and a peripheral edge groove; to facilitate forming the back shell 200 with the binding 400, the binding 400 is integrally formed with the back shell 200 to form the main shell 100 with a certain hardness and elasticity.
Preferably, the back shell 200 is made of TPU, and the inner membrane 320 and the outer membrane 310 are PET sheets respectively. In step S04, TPU colloid enters a small hole punched in advance in the outer film from a glue inlet hole reserved in the front mold, and PET sheet is placed in a front mold cavity and then injection molded. Specifically, surface patterns or colors are optionally reserved in advance on the inner membrane 320, the inner membrane 320 is placed in a front mold cavity, the front mold and the rear mold are pushed in place, IMD injection molding is performed, the back shell 200 and the inner membrane 320 with integrated structures are formed, a groove 201 is formed on the same side of the back shell 200 to which the inner membrane 320 is attached, and the inner membrane 320 is integrally formed on the inner surface of the back shell 200, so that the mobile phone shell is formed.
In step S05, the inner membrane 320 is integrally formed on the inner surface of the back shell 200 through an injection process. Further, as shown in fig. 2, the inner membrane 320 has a decorative layer 321 on an outer surface thereof, and the decorative layer 321 is printed with a predetermined texture or pattern or a fleece or a backing.
In addition, after the back shell 200, the inner membrane 320 and the outer membrane 310 are integrally formed, the camera hole assembly 500 is punched according to the position of the mobile phone camera, the camera hole assembly can be replaced by different shapes and materials, a plastic camera hole can be optionally added to the camera hole assembly 500 to be mounted or adhered to the punched camera hole, and a transparent sheet 501 for protecting the camera hole is further adhered to the optional plastic camera hole. As shown in fig. 5, the camera hole is punched by the die core of the die cutter.
The mobile phone shell product shown in fig. 2-6 is finally obtained through the process, in the mobile phone shell, the inner membrane 320 and the outer membrane 310 are integrally formed with the back shell, and are respectively formed on the inner surface and the outer surface of the back shell 200, meanwhile, one side of the outer membrane 310 is provided with the groove 201, and the groove 201 is optionally filled with required layer materials or glue dripping structures, so that the purpose diversity of the product is realized, and the additional value of the finished product can be improved through the subsequent additional pasting and glue dripping processes.
The structure of the mobile phone case according to the embodiment of the present invention is shown in fig. 2, and the structure is that an inner decorative layer 321, an inner membrane 320, a mobile phone case main case 100, an outer membrane 310, and an outer decorative layer 311 with a skin, a patch, or a glue layer printed with a predetermined texture, a pattern, or a fleece, or a base fabric layer are sequentially printed from inside to outside.
In the embodiment of the invention, the in-mold decoration technology IMD injection molding process is combined with the TPU injection process, so that a set of hard rubber mold can be saved, the matching among molds can be reduced, the speed of producing the mold can be increased, one-time injection molding production can be reduced, can be low in cost and high in efficiency, the elastic hard sheet in the middle of the mobile phone shell and products with TUP elastic soft rubber on the periphery (the mobile phone shell industry is two-in-one) can be realized, the multiple purposes of the products are realized through the grooves of the designed products (the mobile phone shell industry is called two-in-one groove materials) are realized, the groove design can be directly taken as a finished product of the mobile phone shell for direct shipment, and the additional value of the finished product can be increased through the leather pasting paster and the glue dripping technology which are added subsequently
It should be noted that, the limitation of each step in the present solution is not to be considered as limiting the sequence of steps on the premise of not affecting the implementation of the specific solution, and the steps written in the previous step may be executed before, or executed after, or even executed simultaneously, so long as the implementation of the present solution is possible, all the steps should be considered as falling within the protection scope of the present invention.
The above description of the invention in connection with specific alternative embodiments is further detailed and it is not intended that the invention be limited to the specific embodiments disclosed. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (10)
1. The mobile phone shell forming process is characterized by comprising the following steps of:
s01, preparing an inner membrane and an outer membrane, wherein a preset pattern or color is formed on at least the outer membrane;
s02, preparing a die, wherein the die comprises a die frame, a front die, a rear die and a die core;
s03, setting a front model cavity as a shape with a middle bulge and a peripheral edge groove;
s04, placing the outer membrane into a front mould cavity, enabling a preset surface pattern or color to face a rear mould, pushing the front mould in place, performing IMD injection moulding to form a back shell and an outer membrane of an integrated structure, and forming a groove on one surface of the back shell, to which the outer membrane is attached;
s05, integrally forming the inner membrane on the inner surface of the back shell to form the mobile phone shell.
2. The process of claim 1, wherein the predetermined pattern or color is formed on the outer film by ink printing.
3. The process of claim 1, wherein the inner membrane is integrally formed on the inner surface of the back shell by injection.
4. The process of claim 1, wherein the outer surface of the inner membrane has a decorative layer, and the decorative layer is selectively printed with a predetermined texture or pattern or a fleece or a backing.
5. The process for molding a mobile phone case according to claim 1, wherein a decorative layer is further attached to an outer surface of the outer membrane, the decorative layer covers the recess, and the recess is formed on a back surface side of the back shell.
6. The process of claim 1, wherein the decorative layer has a thickness that approximates the depth of the recess.
7. The process for molding a mobile phone shell according to claim 1, wherein the decorative layer on the outer surface of the outer film is formed with a 3D decorative layer by a glue dropping process.
8. The process of claim 1, wherein after the back shell and the inner and outer membranes are integrally formed, a plastic camera hole is optionally added to be mounted or adhered to the position of the punched camera hole according to the position of the camera of the mobile phone, and a transparent sheet for protecting the camera hole is further adhered to the optional plastic camera hole.
9. The process for forming a mobile phone shell according to claim 1, wherein the back shell is made of TPU, and the inner membrane and the outer membrane are respectively made of PET sheets.
10. A mobile phone case manufactured by the mobile phone case molding process according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210687833.4A CN116512516A (en) | 2022-06-17 | 2022-06-17 | Mobile phone shell and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210687833.4A CN116512516A (en) | 2022-06-17 | 2022-06-17 | Mobile phone shell and manufacturing process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116512516A true CN116512516A (en) | 2023-08-01 |
Family
ID=87405203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210687833.4A Pending CN116512516A (en) | 2022-06-17 | 2022-06-17 | Mobile phone shell and manufacturing process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116512516A (en) |
-
2022
- 2022-06-17 CN CN202210687833.4A patent/CN116512516A/en active Pending
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