CN104526956A - Molding process for front cover of terminal - Google Patents
Molding process for front cover of terminal Download PDFInfo
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- CN104526956A CN104526956A CN201410751781.8A CN201410751781A CN104526956A CN 104526956 A CN104526956 A CN 104526956A CN 201410751781 A CN201410751781 A CN 201410751781A CN 104526956 A CN104526956 A CN 104526956A
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- Prior art keywords
- glass plate
- frame
- junction
- appearance
- raw material
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Classifications
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- 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
- B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
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- 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
- B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
- B29C45/14196—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 the inserts being deformed or preformed, e.g. by the injection pressure the inserts being positioned around an edge of the injected part
-
- 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
- B29C45/14434—Coating brittle material, e.g. glass
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- 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
- B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
- B29C45/14196—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 the inserts being deformed or preformed, e.g. by the injection pressure the inserts being positioned around an edge of the injected part
- B29C2045/14204—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 the inserts being deformed or preformed, e.g. by the injection pressure the inserts being positioned around an edge of the injected part the edges formed by an intermediate mould part
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- 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
- B29L2031/3431—Telephones, Earphones
- B29L2031/3437—Cellular phones
-
- 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
- B29L2031/3475—Displays, monitors, TV-sets, computer screens
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a molding process for a front cover of a terminal. The process comprises the following steps: providing an unprocessed glass plate; processing the periphery of the glass plate to obtain a glass plate with a preset shape; putting the glass plate in a border molding die cavity to obtain a border chamber with a border shape; heating the raw material of the border so as to enable the raw material of the border to be in a liquid state; injecting the raw material of the border in the liquid state into the border chamber; cooling the raw material in the liquid state into solid so as to obtain a front cover assembly; and laminating a functional film on the outer surface of the front cover assembly, so as to obtain the front end of the terminal. Through good combination of the border and the glass plate, smooth surfaces are formed on the appearance surface of the border and the appearance surface of the glass plate; and no gap is formed between the glass plate and the border, so that the structure is stable.
Description
Technical field
The present invention relates to terminal forming field, particularly relate to a kind of moulding process of terminal protecgulum.
Background technology
With development in science and technology, each Terminal Type, especially as the movable termination such as mobile phone, panel computer is used more and more widely, requires also more and more higher to its visual experience.In prior art, the moulding process of terminal protecgulum is all first make one piece of translucent plate member and a frame usually, then translucent plate member is loaded in frame, make frame and translucent plate member carry out combination by adhering process and form robust structure, this kind of technique can make on the one hand frame and translucent plate member in conjunction with bad, cause there is gap between protecgulum and frame, the structure of frame and translucent plate member built on the sand on the other hand, translucent plate member easily departs from described frame, meanwhile, the performance of dust impurity effect terminal can also be infiltrated between frame and translucent plate member.
Summary of the invention
In view of this, embodiments of the invention provide a kind of moulding process of terminal protecgulum, to improve display screen component, and have the presentation quality of terminal of this display screen component, and when solving handheld terminal, palm does not accommodate the poor problem of terminal capabilities.
First aspect, provides a kind of moulding process of terminal protecgulum, and the moulding process of described terminal protecgulum comprises step:
One unprocessed glass plate sections is provided;
Process the periphery of described glass plate sections, obtain the glass plate of preset shape;
Described glass plate is placed in frame shaping mold cavity, obtains the frame chamber with frame shape;
Heating frame raw material, make the melting of frame raw material be in a liquid state;
The frame raw material of described liquid state are injected in described frame chamber, treat that described liquid starting material is cooled to solid, obtain front cover component;
The outer surface of described front cover component is sticked functional membrane, obtains terminal protecgulum.
In conjunction with first aspect, in the first possible implementation of first aspect, process in the step of the periphery of described glass plate sections, described unprocessed glass plate sections is through CNC milling machine milling, the glass plate of described preset shape has a first smooth appearance, and be connected to described first appearance first in junction, in described first, junction is arranged on all sides of described glass plate.
In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the second of first aspect is possible, high-precision CNC milling machine is utilized to process in the step of the periphery of described glass plate sections, glass plate described in multiple working procedure milling is set, the mismachining tolerance of multiple working procedure is successively decreased successively, and last procedure mismachining tolerance of described multiple working procedure is no more than 0.003mm.
In conjunction with the first of first aspect or first aspect to any one the possible implementation in the possible implementation of the second, in the third possible implementation of first aspect, there is provided in the raw-material step of a glass plate sections, described glass plate is placed in the step in frame shaping mold cavity, by a module after CNC milling machine processing, obtain the described frame shaping mold cavity with a slippery inner surface, after described inner surface and described first appearance fit, be reserved with a forming surface.
In conjunction with the first of first aspect or first aspect to any one the possible implementation in the third possible implementation, in the 4th kind of possible implementation of first aspect, high-precise numerically controlled milling machine is utilized to process in the step of the periphery of described glass plate sections, the frame raw material of described liquid state are injected in the step in described frame chamber, described solid forms frame, described forming surface molds the second appearance of described frame, described second appearance smoothly connects with described first appearance, described glass plate first in junction mold described frame second in junction, in described second, junction is arranged on described scuncheon, described frame second in junction fit in described glass plate first in junction.
In conjunction with the first of first aspect or first aspect to any one the possible implementation in the 4th kind of possible implementation, in the 5th kind of possible implementation of first aspect, the moulding process of described terminal protecgulum also comprises step: be coated with viscose glue in all sides of described glass plate.
In conjunction with the 5th kind of possible implementation of first aspect, in the 6th kind of possible implementation of first aspect, be coated with in the step of viscose glue in all sides of described glass plate, first with contiguous appearance place, all sides of glass plate described in plastic film covering, then carry out a glue with all sides of adhesive dispensing device to described glass plate.
In conjunction with the first of first aspect or first aspect to any one the possible implementation in the 6th kind of possible implementation, in the 7th kind of possible implementation of first aspect, the moulding process of described terminal protecgulum also comprises step:
Described front cover component is placed in center shaping mold cavity, obtains the center chamber with center shape;
Heating center raw material, make the melting of center raw material be in a liquid state;
The center raw material of described liquid state are injected in described center chamber, obtain the combination of described front cover component and center.
In conjunction with the 7th kind of possible implementation of first aspect, in the 8th kind of possible implementation of first aspect, described center raw material are granular metal or plastic cement or silica gel.
In conjunction with the first of first aspect or first aspect to any one the possible implementation in the 8th kind of possible implementation, in the 9th kind of possible implementation of first aspect, described frame raw material are granular metal or plastic cement or silica gel.
The moulding process of terminal protecgulum provided by the invention is by being first processed into preset shape by glass plate, then glass plate is placed in frame shaping mold cavity, through injection moulding, make frame and the good combination of glass plate sections, and then make the appearance of frame and the appearance of glass plate form a smooth surface, and there is no gap between glass plate and frame, stabilized structure.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the moulding process of terminal protecgulum provided by the invention;
Fig. 2 is the schematic cross-section of the terminal protecgulum in the first embodiment provided by the invention;
Fig. 3 is the schematic cross-section of the terminal protecgulum in the second embodiment provided by the invention;
Fig. 4 is the schematic cross-section of the terminal protecgulum in the 3rd embodiment provided by the invention;
Fig. 5 is the schematic cross-section of the terminal protecgulum in the 4th embodiment provided by the invention;
Fig. 6 is the schematic cross-section of the terminal protecgulum in the 5th embodiment provided by the invention.
Main parts size indicates: glass plate 20, frame 10, described first appearance 21, second appearance 11, junction 12 in first, junction 22 in second.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment of the present invention is clearly and completely described.Obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all should belong to the scope of protection of the invention.
Refer to Fig. 1, the moulding process of a kind of terminal protecgulum that embodiment of the present invention provides.The method comprises the following steps:
Step 101: a unprocessed glass plate sections is provided.
In present embodiment, unprocessed glass plate sections can be obtained by pressure roller moulding process, also can be obtained by cutting technique, can also be to prolong compression technology acquisition by building.The light transmittance of unprocessed glass plate sections need reach more than 90%, thus makes the display effect of terminal good; The flatness of unprocessed glass plate sections is at 0.005mm ~ 0.01mm, and concrete preferred 0.005mm, thus make the surface smoothing of terminal protecgulum, outward appearance is good.In other embodiments, the flatness of unprocessed glass plate sections can also be 0.008.
Step 102: the periphery of processed glass plate, obtains the glass plate of preset shape.
High-precise numerically controlled milling machine adopts diamond milling cutter to carry out milling to glass plate sections, and can the end face of diamond milling cutter can be sphere, and also can be plane, can also be the conical surface.To facilitate the peripheral milling of CNC milling machine to glass plate sections to cut out arc surface or plane, or the conical surface.Man-hour is being added to glass plate sections, is needing to select minimum process error to be the CNC milling machine of 0.002mm, and in advance the machined parameters of CNC milling machine is set, and in advance milling cutter machining path is set.
In present embodiment, CNC milling machine arranges multiple working procedure milling glass plate, and given every procedure is to the processing dimension of glass plate sections; Divide again multiple loop cycle to process in every procedure, set the feeding size in each cycle, thus realize the processing dimension in every procedure.Concrete processing dimension and feeding Size calculation, actual in following formula:
N=L/1, wherein N is the periodicity in every procedure, and L is processing dimension, and 1 is feeding size.Such as: in a procedure, unprocessed glass plate sections width dimensions is 80.105mm, and the glass plate sections width dimensions after processing is 80.005mm, then L=0.1mm, setting 1=0.01, then N=10.Namely in a procedure, all fate 10 cycles of CNC milling machine to glass plate sections carry out milling, and then the processing dimension realized in a procedure is 0.1mm.
In present embodiment, mismachining tolerance and the feeding size of multiple working procedure are successively decreased successively.Such as: the processing dimension in first operation is 5mm, then can set feeding and be of a size of 0.5, periodicity is 10 times, and controlled working error is 0.1; Processing dimension 1mm in second operation work, then can set feeding and be of a size of 0.1, cycle times is 10 times, and controlled working error is 0.5; Processing dimension in three process is 0.1mm, then can set feeding and be of a size of 0.05, and cycle times is 20 times, and controlled working error is 0.01mm.By the processing of multiple working procedure, and the error controlling multiple working procedure is successively decreased, and the processing dimension realizing glass plate is accurate, to reduce the fit tolerance of glass sheet perimeter and frame die cavity, thus prevents the Forming Quality providing frame, improves the presentation quality of terminal protecgulum.In other embodiments, can also be the CNC milling machine according to different model, set different machined parameters.
In present embodiment, last procedure mismachining tolerance in multiple working procedure is no more than 0.003mm.In last procedure in multiple working procedure, setting feeding is of a size of 0.01mm, mismachining tolerance is 0.002mm, thus make the size of glass plate and target size worst error be no more than 0.002mm, the scale error simultaneously controlling frame shaping mold cavity is no more than 0.003, and then the fit clearance of glass plate and frame shaping mold cavity is no more than 0.005mm, when making frame shaping, the defect of excessive glue can not be formed, or form the defect that glass plate pressure is collapsed, thus improve the combination of glass plate and frame, improve the presentation quality of terminal protecgulum.
In present embodiment, the milling cutter machining path in multiple working procedure can be different, and in the operation started, can be the outline coarse milling along glass plate, cutter speed can set fast; In operation at the end of, can be cut along the curved surface finish-milling of glass sheet perimeter, cutter speed can set at a slow speed, thus obtains the glass plate of good quality.
In present embodiment, the machining path of CNC milling machine also needs to carry out programming setting according to the periphery preset strokes of glass plate, concrete, computer is utilized to obtain the mimic diagram of the preset shape of glass sheet perimeter, and then utilize programming software to be mathematical model according to mimic diagram output, and then determine machining path, mathematical model is inputed in CNC milling machine, thus makes CNC milling machine process the glass plate of preset shape according to machining path.In other embodiments, if glass sheet perimeter is simple plane, then also can be do not provide mathematical model to CNC milling machine, the manually milling cutter of operating numerical control milling machine, thus process the glass plate of preset shape.
In present embodiment, unprocessed glass plate sections is through CNC milling machine milling, and the glass plate of preset shape has a first smooth appearance, and be connected to the first appearance first in junction, in first, junction is arranged on all sides of glass plate.
As shown in Figure 2, provide the first embodiment, unprocessed glass plate sections, after CNC milling machine milling, obtains glass plate 20.Glass plate 20 comprises the first appearance 21 and joint face 23 that are oppositely arranged, and the sidewall 20c between the first appearance 21 and joint face 23.First appearance 21 is towards user, and joint face 23 deviates from user, and in first, junction 22 is arranged at sidewall 20c.In joint face 23 and first, junction 22 forms chamfering 23a.Junction 22 in joint face 23 vertical first, joint face 23 is parallel to the first appearance 21.Chamfering 23a is right angle chamfering.In first, junction 22 is provided with the first depression 221.First appearance 21, first of the first depression 221 adjacent glass plates 20 caves in and 221 to extend along the circumference of glass plate 20.Add man-hour at glass plate 20, only need carry out Cutting Process, and to glass plate 20 convenient mounting and clamping, and then the convenient processing to glass plate 20, reduce the cost of manufacture of terminal protecgulum.
As shown in Figure 3, provide the second embodiment, unprocessed glass plate sections, after CNC milling machine milling, obtains glass plate 20.Glass plate 20 is roughly the same with the glass plate 20 in the first embodiment, unlike: the sidewall 20c of glass plate 20 is provided with flange 202, and flange 202 is provided with the step surface 130 being connected to junction 22 in second.In step surface 130 and second, junction 22 forms interior angle 130a.
As shown in Figure 4, provide the 3rd embodiment, unprocessed glass plate sections, after CNC milling machine milling, obtains glass plate 20.Glass plate 20 is roughly the same with the glass plate 20 in the first embodiment, unlike: in second, junction 22 arranges a two first depressions 221a and first protruding 221b.First protruding 221b is between two first depression 221a.
As shown in Figure 5, provide the 4th embodiment, unprocessed glass plate sections, after CNC milling machine milling, obtains glass plate 20.Glass plate 20 is roughly the same with the glass plate 20 in the first embodiment, unlike: in first, junction 22 arranges the first depression 222a and the first protruding 222b.Second depression 222a is wedge-shaped impression, and the second protruding 222b is semi-cylindrical hill.First protruding 122a adjacent bottom 10b (see Fig. 1), the first depression 122b is disposed adjacent with the first protruding 122a.
As shown in Figure 6, provide the 5th embodiment, unprocessed glass plate sections, after CNC milling machine milling, obtains glass plate 20.Glass plate 20 is roughly the same with the glass plate 20 in the first embodiment, unlike junction 22 undulate in first, namely junction 22 is provided with one first depression 223a and first protruding 223b in first.First depression 223a is semi-circular recesses, and the first protruding 223b is semicircular flanges.First depression 223a and the first protruding 223b is disposed adjacent.
Step 103: be coated with viscose glue in all sides of glass plate.
In present embodiment, after the glass plate obtaining preset shape, regulation glass plate is appearance towards user's one side; not damaged for improving glass plate; to when all sides of glass plate are coated with viscose glue, reply appearance and medial surface are sticked diaphragm, thus cover glass plate.Meanwhile, in order to prevent the gap between viscose glue increase glass plate and frame, viscose glue should be coated with and be located at all sides away from appearance place.Concrete, first with contiguous appearance place, all sides of plastic film covering glass plate, then carry out a glue with all sides of adhesive dispensing device to glass plate.In other embodiments, can also be utilize adhesive dispensing device to the multiple spot place of all sides of glass plate, fixed fire viscose glue.
Step 104: be placed on by glass plate in frame shaping mold cavity, obtains the frame chamber with frame shape.
In present embodiment, frame shaping mold cavity adopts CNC milling machine Milling Process mode to make, and the machining accuracy grade of frame shaping mold cavity is identical with the machining accuracy grade of glass plate, make frame shaping mold cavity and glass plate good fit.Concrete, tear appearance upper protective film, and the film on all sides; The position of glass plate at frame shaping mold cavity is positioned; First appearance of glass plate and the first inner surface of frame shaping mold cavity are fitted; By frame shaping mold cavity and frame core matched moulds, thus obtain the chamber with frame shape.
Concrete, by a module after CNC milling machine processing, obtain the frame shaping mold cavity with a slippery inner surface, after inner surface and the first appearance fit, be reserved with a forming surface.Frame shaping mold cavity is matched with frame building core simultaneously, junction in forming surface and first, and the outer surface of frame building core encloses the chamber with frame shape jointly.
Step 105: heating frame raw material, make the melting of frame raw material be in a liquid state.
Frame raw material can be granular plastic cement, also can be granular metals, can also be granular silica gel.In present embodiment, frame raw material adopt plastic cement.The raw-material heating of frame can be complete in injector, the screw rod of injector is utilized to do shearing motion to frame raw material, make frame raw material be the liquid state of melting, and add the raw-material cohesive force in edge, frame raw material can be better combined with glass plate.
Step 106: be injected in frame chamber by the center raw material of liquid state, treat that liquid starting material is cooled to solid, obtains front cover component.
In present embodiment, in order to not affect the appearance of frame, the entry portal of liquid starting material is arranged on frame core, thus avoids leave injection vestige in the appearance of frame, affects the appearance of frame.
In present embodiment, solid forms frame, forming surface molds the second appearance of frame, second appearance smoothly connects with the first appearance, glass plate first in junction mold frame second in junction, in second, junction is arranged on scuncheon, frame second in junction fit in glass plate first in junction.
As shown in Figure 2, provide in the first embodiment, frame 10 is plastic cement frame, the rectangular ring-type of frame 10.Frame 10 comprises framework 101, the rectangular shape of section of framework 101, and framework 101 comprises the top 10a and bottom 10b that are oppositely arranged, and the outer wall 10c be oppositely arranged and inwall 10d.Second appearance 11 is arranged at top 10a, and in second, junction 12 is arranged at inwall 10d.When terminal protecgulum 100 is applied to mobile phone, bottom 10b is fixed on the center of mobile phone, also can be fixed on the bonnet of mobile phone, can also be fixed on another frame of mobile phone protecgulum.Outer wall 10c arranges appearance, also can be fit in mobile phone center inside or inside bonnet.
Frame 10 encloses in glass plate 20 surrounding, sidewall 20c and inwall 10d mutually against, in second, in junction 22 and first, junction 12 fits, thus seamless between glass plate 20 and frame 10.Second appearance 11 and the first appearance 21 smoothly connect formation smooth surface, thus realize between frame 10 and glass plate 20 seamless, realize terminal front cover surface smooth, meet ergonomics, enhance the appearance of terminal protecgulum, and then improve the service efficiency of terminal protecgulum.In addition, glass plate 20 is transparent hard plate, while glass plate 20 and frame 10 good combination, plays a good protection, and realize good printing opacity effect to terminal inner part.
Frame 10 comprises the flange 102 being arranged at framework 101 inwall, flange 102 is provided with the step surface 13 be connected with junction in second 12, and form interior angle 13a between junction 12 in step surface 13 and second, interior angle 13a matches with chamfering 23a.Concrete, junction 12 in step surface 13 vertical second.Flange 102 is arranged at inwall 10d, and flange 102 is near bottom 10b, and the section of flange 102 is rectangular.Step surface 13 is arranged at the top end surface of flange 102, and the bottom end surface of flange 102 is mutually concordant with the surface of bottom 10b.Interior angle 13a to be arranged in flange 102 and first between junction 12, interior angle 13a is right angle groove, thus hold the chamfering 23a of glass plate 20, thus chamfering 23a and re-entrant angle 13a tabling, and then the edge of the common clamping glass plate 20 of junction 12 in step surface 13 and first, increase frame 10 and the bond strength of glass plate 20, make the support glass plate 20 that frame 10 is firm, prevent glass plate 20 from departing from frame 10, improve the service life of terminal protecgulum 100.
Frame 10 with its in second junction 12 be provided with the second projection 121.The top 10a of the second protruding 121 adjacent bezel 10, the second projection 121 extends along the inwall 10d hoop of frame 10, the cross section triangularity shape of the second projection 121.Second protruding 121 inserts in the first depression 221, thus junction 22 tabling in junction 12 and first in second.Because the first depression 221 is adjacent to the first appearance 21 of glass plate 20, make frame 10 when injection moulding, the injection pressure of the second projection 121 can reduce in gradient, thus prevents frame 10 from producing the defect such as burr or many glue with the junction of glass plate 20.
As shown in Figure 3, there is provided in the second embodiment, frame 10 is roughly the same with the frame 10 in the first embodiment, unlike: frame 10 comprises the joint face 230 being connected to junction 12 in second, in joint face 230 and second, junction 12 forms chamfering 230a, and chamfering 230a matches with interior angle 130a.The i.e. inward flange of flange 202 support frame 10, and then frame 10 size can be reduced further, make terminal protecgulum 100 obtain larger sized viewing area.
As shown in Figure 4, provide in the 3rd embodiment, frame 10 is roughly the same with the frame 10 in the first embodiment, unlike: in second, junction 12 arranges a second protruding 121a and two the second depression 121b.Second protruding 121a is near top 10a, and the second depression 121b and the second protruding 121a is separated by.First depression 221a is corresponding with the second protruding 121a, and the first protruding 221b and second 121b that caves in is corresponding.Thus add the contact area of junction 22 in junction in second 12 and first, be conducive to the combination of frame 10 and glass plate 20, ensure that the integration of frame 10 and glass plate 20, and then be conducive to smoothly connecting of the second appearance 11 and the first appearance 21.
As shown in Figure 5, provide in the 4th embodiment, frame 10 is roughly the same with the frame 10 in the first embodiment, unlike: in second, junction 12 arranges the second protruding 122a and second depression 122b.Second protruding 122a is wedge shape, and the second depression 122b is semi-circular recesses.Second protruding 122a adjacent bottom 10b (see Fig. 1), the second depression 122b is disposed adjacent with the second protruding 122a.Second protruding 122a and first 222a that caves in is corresponding, and the second protruding 122a and first 222a that caves in combines.To state 222b122b protruding with first corresponding for institute second depression, and the second protruding 222b and first 122b that caves in combines.Thus more a step adds the contact area of junction 22 in junction in second 12 and first, make the bond strength of frame 10 and glass plate 20 better, and then avoid frame 10 and glass plate 20 to produce lateral displacement, prevent the first appearance 11 and the second appearance 12 from occurring gap, be conducive to the surface smoothing of terminal protecgulum.
As shown in Figure 6, provide in the 5th embodiment, frame 10 is roughly the same with the frame 10 in the first embodiment, unlike junction 12 undulate in second, namely junction 12 is provided with an a second protruding 123a and second depression 123b in second.Second protruding 123a is semicircular flanges, and the second depression 123b is semi-circular recesses.Second protruding 123a and second depression 123b is disposed adjacent.First depression 223a is corresponding with the second protruding 123a, and the first depression 322a combines with the second protruding 123a.First protruding 223b and second 123b that caves in is corresponding, and the first protruding 223b and second 123b that caves in combines.Thus while adding the contact area of junction 22 in junction in second 12 and first, add the longitudinal shear resistance shearing stress between frame 10 and glass plate 20, and then avoid frame 10 and glass plate 20 to form longitudinal shear campaign, damage the inner side parts of terminal protecgulum; Prevent the second appearance 11 and the first appearance 21 section of appearance poor, and also ensure that the level and smooth of the second appearance 11 and the first appearance 21, the outward appearance being conducive to terminal protecgulum is good.
Step 107: be placed on by front cover component in center shaping mold cavity, obtains the center chamber with center shape.
In present embodiment, provide a center shaping mold cavity, center shaping mold cavity adopts to be made with frame shaping mold cavity same way, and center shaping mold cavity and frame shaping mold cavity can be shared cores, also can be to use respective core.Center shaping mold cavity and frame shaping mold cavity can be carry out injection moulding in same injector, concrete, by on frame shaping mold cavity and center shaping mold cavity placing rotary disk, after frame shaping mold cavity completes injection, obtain front cover component, front cover component is stayed on core, by rotating rotating disk, center shaping mold cavity is coordinated with the core with front cover component, thus obtains the chamber with center shape.
108: heating center raw material, make the melting of center raw material be in a liquid state.
Middle circle raw material can be granular plastic cement, also can be granular metals, can also be granular silica gel.In present embodiment, center raw material adopt plastic cement.The setting identical with the injection system of frame of the injection system of center.
109: the center raw material of liquid state are injected in center chamber, obtain the combination of front cover component and center.
In present embodiment, in present embodiment, in order to not affect the appearance of frame, the entry portal of liquid starting material is arranged on center core, thus avoids leave injection vestige in the appearance of center, affects the appearance of center.
110: be sticked functional membrane on the outer surface of front cover component, obtain terminal protecgulum.
In present embodiment, the junction of functional membrane stacked coated glass sheets and frame, thus weaken the gap between glass plate and frame.Functional membrane can also be photosensitive material, and under high light, functional membrane is high light transmittance energy, makes the light transmission of terminal protecgulum good; Under the low light level, functional membrane presents translucence, thus covers the junction of glass plate and frame.
The moulding process of terminal protecgulum provided by the invention is by being first processed into preset shape by glass plate, then glass plate is placed in frame shaping mold cavity, through injection moulding, make frame and the good combination of glass plate sections, and then make the appearance of frame and the appearance of glass plate form a smooth surface, and there is no gap between glass plate and frame, stabilized structure.
Be more than the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a moulding process for terminal protecgulum, is characterized in that, the moulding process of described terminal protecgulum comprises step:
One unprocessed glass plate sections is provided;
Process the periphery of described glass plate sections, obtain the glass plate of preset shape;
Described glass plate is placed in frame shaping mold cavity, obtains the frame chamber with frame shape;
Heating frame raw material, make the melting of frame raw material be in a liquid state;
The frame raw material of described liquid state are injected in described frame chamber, treat that described liquid starting material is cooled to solid, obtain front cover component;
The outer surface of described front cover component is sticked functional membrane, obtains terminal protecgulum.
2. the moulding process of terminal protecgulum according to claim 1, it is characterized in that, process in the step of the periphery of described glass plate sections, described unprocessed glass plate sections is through CNC milling machine milling, the glass plate of described preset shape has a first smooth appearance, and be connected to described first appearance first in junction, in described first, junction is arranged on all sides of described glass plate.
3. the moulding process of terminal protecgulum as claimed in any of claims 1 to 2, it is characterized in that, process in the step of the periphery of described glass plate sections, glass plate described in multiple working procedure milling is set, the mismachining tolerance of multiple working procedure is successively decreased successively, and last procedure mismachining tolerance of described multiple working procedure is no more than 0.003mm.
4. the moulding process of the terminal protecgulum according to any one in claims 1 to 3, it is characterized in that, described glass plate is placed in the step in frame shaping mold cavity, by a module after CNC milling machine processing, obtain the described frame shaping mold cavity with a slippery inner surface, after described inner surface and described first appearance fit, be reserved with a forming surface.
5. the moulding process of the terminal protecgulum according to any one in Claims 1-4, it is characterized in that, the frame raw material of described liquid state are injected in the step in described frame chamber, described solid forms frame, described forming surface molds the second appearance of described frame, described second appearance smoothly connects with described first appearance, described glass plate first in junction mold described frame second in junction, in described second, junction is arranged on described scuncheon, described frame second in junction fit in described glass plate first in junction.
6. the moulding process of the terminal protecgulum according to any one in claim 1 to 5, is characterized in that, the moulding process of described terminal protecgulum also comprises step: be coated with viscose glue in all sides of described glass plate.
7. the moulding process of terminal protecgulum according to claim 6, it is characterized in that, be coated with in the step of viscose glue in all sides of described glass plate, first with contiguous appearance place, all sides of glass plate described in plastic film covering, then carry out a glue with all sides of adhesive dispensing device to described glass plate.
8. the moulding process of the terminal protecgulum according to any one in claim 1 to 7, is characterized in that, the moulding process of described terminal protecgulum also comprises step:
Described front cover component is placed in center shaping mold cavity, obtains the center chamber with center shape;
Heating center raw material, make the melting of center raw material be in a liquid state;
The center raw material of described liquid state are injected in described center chamber, obtain the combination of described front cover component and center.
9. the moulding process of terminal protecgulum according to claim 8, is characterized in that, described center raw material are granular metal or plastic cement or silica gel.
10. the moulding process of the terminal protecgulum according to any one in claim 1 to 9, is characterized in that, described frame raw material are granular metal or plastic cement or silica gel.
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Application publication date: 20150422 |