CN202241789U - Improved injection molding device for in-mould decoration - Google Patents
Improved injection molding device for in-mould decoration Download PDFInfo
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- CN202241789U CN202241789U CN2011203519426U CN201120351942U CN202241789U CN 202241789 U CN202241789 U CN 202241789U CN 2011203519426 U CN2011203519426 U CN 2011203519426U CN 201120351942 U CN201120351942 U CN 201120351942U CN 202241789 U CN202241789 U CN 202241789U
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- film
- cover half
- plastic sheeting
- injection molding
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Abstract
The utility model discloses an improved injection molding device for in-mould decoration, which comprises a mould, a film conveyer, a punching device, a film vacuum draw device, an injection molding machine and a film positioning device, wherein the film conveyer is used for conveying a plastic film printed with a prefabricated pattern. The film positioning device comprises positioning columns and positioning holes matched with the positioning columns, wherein the positioning holes are arranged on the plastic film at intervals, and the positioning columns are flexibly mounted on the mould. When a movable mould moves by facing a fixed mould, the positioning columns pop out to clamp the positioning holes, and when the movable mould moves oppositely to the fixed mould, the positioning columns retract to unlock with the plastic film. Therefore, by the aid of the positioning device, the plastic film can be positioned, pattern printing is facilitated, and pattern printing quality is further improved.
Description
Technical field
The utility model relates to a kind of injection molding apparatus.
Background technology
Injection mo(u)lding is a kind of main moulding process of plastics, and Injection moulded part is within reach in our daily life.Because the color limitation of Shooting Technique self usually need be decorated injection-molded item, comprises printing word or pattern, it is bright and colourful to reach outward appearance.The most frequently used method that Injection moulded part is decorated is a secondary operations, promptly on the Injection moulded part of moulding, prints, operation such as spraying the final plastic products with literal or pattern that form.The method operation of secondary operations is loaded down with trivial details, the production cycle is long, when spraying, has a large amount of coating to be wasted, and a large amount of harmful substance volatile matters (VOC) is dispersed in the air simultaneously, and environment is polluted, and is unfavorable to health.
In order to reduce the discharging of VOC, in consumer electronics (mobile phone, notebook computer, digital camera, MP3 or the like) manufacture process, (In-Mold Decoration IMD) rises produced by insert molding in a kind of so-called mould day by day.Its process is: at first the technology of designed with patterns with serigraphy is copied on a slice plastic sheeting; The plastic sheeting that secondly will print carries out hot-forming certain shape that obtains; Carry out the film after hot-forming die-cut then; At last the die-cut good plastic sheeting with definite shape is placed in the mold cavity of injection machine, and carries out injection moulding, the Injection moulded part that finally obtains having designed with patterns.Plastic sheeting has been stayed on the product as shell.IMD has avoided the volatilization of harmful substance in the spraying process, can obtain gay colours simultaneously, and plastic sheeting has been given the performance of wear-resisting scratch-resisting in addition.The shortcoming of IMD is that production process is complicated, can not realize that continuous production, production efficiency are low, and yield is poor.
A kind of in addition method of running neck and neck with IMD is that (In-Mold Release IMR), also can reach the purpose that reduces the unwanted volatile discharging to in-mold transfer printing.Detailed process is: at first the continuous method of printing of designed with patterns utilization is printed on the coiled material of transfer film; The transfer film of printed picture and text passes through the film conveyor delivery in injection mold cavity in advance then; Last injection mold matched moulds, injection moulding, the pattern on the transfer film is transferred on the Injection moulded part by heat.Compare with IMD, the operation of IMR is few, can produce continuously, and it is high that its production efficiency is wanted; But because IMR is in process, last transfer film comes off, and pattern exposes the outside at product, can not be protected, and use can make pattern come off for a long time.
Based on this; The applicant has applied for that to Patent Office of the People's Republic of China a denomination of invention is " injection molding apparatus that is used for in-mold decoration " (application number is 201020626431.6) on November 26th, 2010; Through using the described injection molding apparatus of this utility model to carry out the workpiece injection moulding, (IMD) compares with in-mold decoration, avoided the loaded down with trivial details of single film printing; Save thermoforming and die-cut technology simultaneously, reduced the input of manpower and equipment.(IMR) compares with in-mold transfer printing, realized the purpose of pattern in film, reached scratch resistant effect.Therefore, the utility model has combined the advantage of in-mold decoration (IMD) with in-mold transfer printing (IMR) effectively.But this Chinese patent disclosed " injection molding apparatus that is used for in-mold decoration " can not effectively be located plastic sheeting; Plastic sheeting offset in the time of possibly causing printing; Cause the printing of Injection moulded part pattern to have flaw, perhaps transfer printing needs repetitive operation, inefficiency.
The utility model content
The utility model provides a kind of improved injection molding apparatus that is used for in-mold decoration to the deficiency of prior art, and it so that plastic sheeting is positioned, is convenient to the pattern printing operation through positioner is set, and further improves the pattern printing quality.
For realizing above technical purpose, the utility model will be taked following technical scheme:
A kind of improved injection molding apparatus that is used for in-mold decoration comprises mould, is used to carry the film conveyer, blanking units, film vacuum suction apparatus, injection machine and the film positioning apparatus that are printed with the pre-fabricated patterns plastic sheeting; Said mould comprises dynamic model and the cover half that is used; Said blanking units comprises cutter and cutter driving device; The clutch end of said cutter driving device is connected with cutter; Said cutter reciprocatingly moves in the injection moulding die cavity of dynamic model and cover half formation through the power drive of cutter driving device; Said cover half connects with the injection-moulding nozzle of injection machine and is connected; The vacuum of said film vacuum suction apparatus is inhaled the hole and is connected with the dynamic model perforation, and said plastic sheeting places between dynamic model and the cover half through the film conveyer, and the pre-fabricated patterns of printing on the plastic sheeting is placed towards cover half; Film positioning apparatus comprise reference column and with the suitable locating hole of reference column; Said locating hole is spaced apart and arranged on the plastic sheeting, and reference column then telescopically is installed on the mould; When dynamic model when cover half moves, reference column ejects blocking locating hole, when dynamic model deviates from cover half when moving, the reference column retraction with the plastic sheeting release.
Said reference column is installed on the cover half, and an end of reference column is connected with reciprocal linear moving apparatus, and the other end is then towards the plastic sheeting setting.
Said cutter annular spread is in the interior profile of dynamic model or cover half.
Said plastic sheeting equal intervals ground printing cursor is then installed the cursor inductor on the film conveyer.
Cutter driving device is hydraulic cylinder or linear electric motors.
Said blanking units and dynamic model homonymy are installed.
Said locating hole is the die-cut through hole of perforating device.
According to above technical scheme, can realize following beneficial effect:
The utility model, can be lived the plastic sheeting location when making transfer printing through film positioning apparatus is set, and prevents the plastic sheeting offset, further improves the pattern printing quality; The positioner that the utility model adopted is that the suitable locating hole and the telescopically that are opened on the plastic sheeting is installed in the reference column on the mould, and is simple in structure, be convenient to implement, and control is convenient.
Description of drawings
Structural representation when Fig. 1 is the said shaped device installation of the utility model plastic sheeting;
Fig. 2 carries out the structural representation of film when die-cut in the said shaped device matched moulds of the utility model process;
Structural representation when Fig. 3 is the said shaped device injection moulding of the utility model;
Structural representation when Fig. 4 is the said shaped device die sinking of the utility model;
Wherein: dynamic model 1; Cover half 2; Film conveyer 3; Plastic sheeting 4; Cutter 5; Injection machine nozzle 6; Reference column 7.
The specific embodiment
Accompanying drawing discloses the structural representation of the related preferred embodiment of the utility model without limitation; Below will combine accompanying drawing that the technical scheme of the utility model at length is described.
Shown in Fig. 1 to 4; The described improved injection molding apparatus that is used for in-mold decoration of the utility model comprises mould, is used to carry the film conveyer, blanking units, film vacuum suction apparatus, injection machine and the film positioning apparatus that are printed with the pre-fabricated patterns plastic sheeting; Said mould comprises dynamic model and the cover half that is used; Said blanking units comprises cutter and cutter driving device; The clutch end of said cutter driving device is connected with cutter; Said cutter reciprocatingly moves in the injection moulding die cavity of dynamic model and cover half formation through the power drive of cutter driving device; Said cover half connects with the injection-moulding nozzle of injection machine and is connected; The vacuum of said film vacuum suction apparatus is inhaled the hole and is connected with the dynamic model perforation, and said plastic sheeting places between dynamic model and the cover half through the film conveyer, and the pre-fabricated patterns of printing on the plastic sheeting is placed towards cover half; Film positioning apparatus comprise reference column and with the suitable locating hole of reference column; Said locating hole is spaced apart and arranged on the plastic sheeting, and reference column then telescopically is installed on the mould; When dynamic model when cover half moves, reference column ejects blocking locating hole, when dynamic model deviates from cover half when moving, the reference column retraction with the plastic sheeting release.Said reference column is installed on the cover half, and an end of reference column is connected with reciprocal linear moving apparatus, and the other end is then towards the plastic sheeting setting.Said cutter annular spread is in the interior profile of dynamic model or cover half.Said plastic sheeting equal intervals ground printing cursor is then installed the cursor inductor on the film conveyer.Cutter driving device is hydraulic cylinder or linear electric motors.Said blanking units and dynamic model homonymy are installed.Said locating hole is the die-cut through hole of perforating device.
During use, may further comprise the steps: the plastic sheeting that at first will be printed with pre-fabricated patterns is placed in the injection moulding die cavity that is formed by fixed half and moving half through the film conveyer, and positions through locating hole; Then at dynamic model in the cover half moving process, it is die-cut to adopt blanking units that the aforementioned plastic sheeting that is printed with pre-fabricated patterns is carried out, and adopts the mode of vacuum draw this plastic sheeting that is printed with pre-fabricated patterns to be adsorbed on the inner cavity surface of dynamic model simultaneously; Adopt the injection machine injection-moulded plastic to obtain product at last.
The plastic sheeting that the utility model is mentioned, thermoplastic film normally, the modulus of heating rear film descends, be heated to glass transition point (Tg) or fusing point (Tm) after, film is with fusion.This film comprises Merlon (PC) film, PETG (PET) film, acrylonitrile-butadiene-styrene copolymer (ABS) film, polyamide (PA) film, polypropylene (PP) film or the like.These films can make through the method for blowing or melt curtain coating, can be that full impregnated is bright, also can be translucent.The thickness range of film is at 0.025 millimeter to 0.5 millimeter, usually at 0.05 millimeter to 0.2 millimeter.
When the utility model prints pre-fabricated patterns on plastic sheeting, employing be the volume to volume printing process, avoided the single film printing causes in the IMD process poor efficiency and low yield.The volume to volume printing process can be continuous intaglio plate or the printing of nick version, also can be continuous serigraphy.The spread of intaglio printing is lower than nick version and serigraphy.Adopt intaglio plate and the printing of nick version can give design bigger space.According to the size of product and the position of cast gate design, the thickness of printing-ink can not wait from 1 micron to 20 microns in variation.Printing ink is thick more, and is shock-resistant more in injection moulding process, thereby avoid the generation of red ink phenomenon.Usually the product size is big more, needs the printing ink of printing thick more.After printing ink has printed pre-fabricated patterns, need one deck adhesive linkage usually, to improve bonding between plastic sheeting and the casting resin.
The film conveyer is the special rolling plastic sheeting that is printed with pre-fabricated patterns carried, and it can be above injection machine or the side.Another effect of film conveyer is to be rolled by the plastic sheeting of die-cut mistake forming in the die cavity at fixed half and moving half.The key of film conveyer is accurate positioning, to guarantee the uniformity of pattern between the product.For this reason; To the plastic film printing pre-fabricated patterns time, can cursor be printed on the film equally spacedly, a cursor inductor is installed on the film conveyer simultaneously; The cursor inductor can be sensed the cursor on the film and stop to carry; Therefore, the distance between the cursor also is the distance of the each handle thin films of film conveyer.In addition, the film conveyer also is furnished with the function of automatic deflection adjusting, can accurately regulate the up and down position about two rollers of film conveyer, to guarantee about film also accurately location.
When the film feeding machine is delivered to assigned address to film; Reference column on the mould ejects (the reference column top is that certain tapering is arranged); Make it let the locating hole on the film be enclosed within on the reference column, when moulds open, in the reference column automatic drawing back mould; The film feeding machine transmits film automatically, through the moulding of next cycle.
Blanking units can be installed with the dynamic model homonymy, also can install with the cover half homonymy.But because the cover half side links to each other with the injection-moulding nozzle of injection machine usually, available insufficient space is so preferably be positioned on the dynamic model side with blanking units.Specific practice is: at the embedded circle cutter of dynamic model, moving of cutter controlled separately by hydraulic cylinder or linear electric motors.Cutter passes through hydraulic pressure or linear electric motors to the displacement of cover half direction as much as possible near the interior cavity edge of mould when matched moulds, realization is die-cut to plastic sheeting, and die-cut direction is from the plastic sheeting to printing ink.Cutter can be controlled by gauge tap when matched moulds finished, and return voluntarily.Gauge tap can be by the Stroke Control of cutter, also can be by Current Control.When adopting Current Control, can use dry cell that power supply is provided, when two mould matched moulds, behind the die-cut film of cutter, two moulds can have current lead-through, and cutter just stops to move automatically.
The injection mo(u)lding that the utility model is mentioned is the same with the injection moulding of general injection machine.Injection moulding process is relevant with injection temperature, pressure and injection moulding speed.
Claims (7)
1. an improved injection molding apparatus that is used for in-mold decoration comprises mould, is used to carry the film conveyer, blanking units, film vacuum suction apparatus and the injection machine that are printed with the pre-fabricated patterns plastic sheeting; Said mould comprises dynamic model and the cover half that is used; Said blanking units comprises cutter and cutter driving device; The clutch end of said cutter driving device is connected with cutter; Said cutter reciprocatingly moves in the injection moulding die cavity of dynamic model and cover half formation through the power drive of cutter driving device, and said cover half connects with the injection-moulding nozzle of injection machine and is connected, and the vacuum of said film vacuum suction apparatus is inhaled the hole and is connected with the dynamic model perforation; Said plastic sheeting places between dynamic model and the cover half through the film conveyer; And the pre-fabricated patterns of printing on the plastic sheeting is placed towards cover half, it is characterized in that: also comprise film positioning apparatus, this film positioning apparatus comprise reference column and with the suitable locating hole of reference column; Said locating hole is spaced apart and arranged on the plastic sheeting, and reference column then telescopically is installed on the mould; When dynamic model when cover half moves, reference column ejects blocking locating hole, when dynamic model deviates from cover half when moving, the reference column retraction with the plastic sheeting release.
2. according to the said improved injection molding apparatus that is used for in-mold decoration of claim 1, it is characterized in that: said reference column is installed on the cover half, and an end of reference column is connected with reciprocal linear moving apparatus, and the other end is then towards the plastic sheeting setting.
3. according to the said improved injection molding apparatus that is used for in-mold decoration of claim 1, it is characterized in that: said cutter annular spread is in the interior profile of dynamic model or cover half.
4. according to the said improved injection molding apparatus that is used for in-mold decoration of claim 1, it is characterized in that: said plastic sheeting equal intervals ground printing cursor, the cursor inductor then is installed on the film conveyer.
5. according to the said improved injection molding apparatus that is used for in-mold decoration of claim 1, it is characterized in that: cutter driving device is hydraulic cylinder or linear electric motors.
6. according to the said improved injection molding apparatus that is used for in-mold decoration of claim 1, it is characterized in that: said blanking units and dynamic model homonymy are installed.
7. according to the said improved injection molding apparatus that is used for in-mold decoration of claim 1, it is characterized in that: said locating hole is the die-cut through hole of perforating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203519426U CN202241789U (en) | 2011-09-20 | 2011-09-20 | Improved injection molding device for in-mould decoration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203519426U CN202241789U (en) | 2011-09-20 | 2011-09-20 | Improved injection molding device for in-mould decoration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202241789U true CN202241789U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203519426U Expired - Fee Related CN202241789U (en) | 2011-09-20 | 2011-09-20 | Improved injection molding device for in-mould decoration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202241789U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106273215A (en) * | 2015-06-10 | 2017-01-04 | 东莞市艾尔玛机械设备有限公司 | A kind of inner mould transfer printing method |
| CN109760265A (en) * | 2019-02-22 | 2019-05-17 | 珠海市曼茶溢生物科技有限公司 | Pad pasting decorating injection forming method in profiled piece and its mould |
-
2011
- 2011-09-20 CN CN2011203519426U patent/CN202241789U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106273215A (en) * | 2015-06-10 | 2017-01-04 | 东莞市艾尔玛机械设备有限公司 | A kind of inner mould transfer printing method |
| CN109760265A (en) * | 2019-02-22 | 2019-05-17 | 珠海市曼茶溢生物科技有限公司 | Pad pasting decorating injection forming method in profiled piece and its mould |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20130920 |