CN203739137U - Full-automatic demolding Injection molding die - Google Patents

Full-automatic demolding Injection molding die Download PDF

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Publication number
CN203739137U
CN203739137U CN201420171292.0U CN201420171292U CN203739137U CN 203739137 U CN203739137 U CN 203739137U CN 201420171292 U CN201420171292 U CN 201420171292U CN 203739137 U CN203739137 U CN 203739137U
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China
Prior art keywords
plane
cavity
plate
die
full
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Expired - Fee Related
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CN201420171292.0U
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Chinese (zh)
Inventor
王乾
徐自明
杨峰
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Changzhou Vocational Institute of Light Industry
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Changzhou Vocational Institute of Light Industry
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Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to the technical field of plastic molding and processing, particularly to a full-automatic demolding injection molding die. The injection molding die sequentially comprises a moving clamping plate, a push rod push plate, a push rod fixing plate, a movable die plate, a fixed die plate and a fixed clamping plate from bottom up, wherein the movable die plate and the fixed die plate are spliced; a mold core is arranged in the movable die plate; a cavity spliced with the mold core is arranged in the fixed die plate; when the cavity and the mold core are spliced, a double-cavity mold structure for simultaneously performing injection molding on two sloping plates and multiple rib plastic parts is formed in the spliced part; the two cavities are consistent in structures and symmetrically arranged in a reverse manner; a transverse runner leading to the two cavities is arranged between the two cavities. The utility model has the following benefits: the injection molding die reliably realizes full-automatic demolding, improves the production efficiency of the plastic parts and is stable in quality; in addition, as the structure is simplified, the manufacturing difficulty and the cost of the die are reduced, and the service life and the accuracy of the die are prolonged and improved.

Description

The injection forming mold of the full-automatic demoulding
Technical field
The utility model relates to plastics forming technique field, is specifically related to a kind of injection forming mold of the full-automatic demoulding, has a lot of muscle, side to have inclined hole and the injection moulding of the structural model such as largest contours place is jagged for the working of plastics back side.
Background technology
Plastic part is widely used at electronics, automobile, household electrical appliance, medicine equipment.The most application of plastic part mould of plastics completes injection mo(u)lding on injection machine.At present, the structure of plastic part becomes increasingly complex, and updates more and more ordinary, and this just requires plastic part producer to have efficient production capacity and stable quality.Solving automatic demoulding problem is reliably to improve plastic part production efficiency and one of the stable important channel of ensuring the quality of products.
Due to the structural factor of working of plastics complexity, full-automatic demoulding meeting runs into some problems.The demoulding comprises the demoulding and the demoulding of solidifying material of plastic itself, its general process is as follows: under mould matched moulds state, plastics are moulding in mold cavity, afterwards, under injection machine drives, dynamic model and cover half separate on die joint, plastic part and solidifying material thereof pack tightly on dynamic mould core and push piece organ, by push piece mechanism, plastic part is separated with dynamic mould core, now, plastic part and solidifying material do not have and push piece organ separates, and need craft or automated manner that plastic part and solidifying material thereof are taken off from push piece organ, complete the demoulding.In this process, the full-automatic demoulding has some difficult points: especially the utility model wants many muscle of swash plate plastic of injection moulding as Fig. 1, shown in 2, comprise the first panel 1 and the second panel 2, angle between the first panel 1 and the second panel 2 is greater than 90 °, the curved panel 3 in junction of the first panel 1 and the second panel 2 is smooth excessively, the first panel 1 and the second panel 2 and curved panel 3 integrated injection moldings, the integrative-structure back side of injection mo(u)lding has some crisscross reinforcement 1-1, one end upwards to the second panel 2 of curved panel 3 has " 7 " font breach 3-1, it is excessive that " 7 " font breach 3-1 corner is circular arc, the other end of curved panel 3 has inclined hole 3-2 with on the part contacting the first panel 1, be the other end of inclined hole 3-2 part at curved panel 3, part is on the first panel 1, the first panel 1 edge relative with curved panel 3 has strip breach 1-2, the base of strip breach 1-2 is extended with baffle plate 1-2-1 to the back side of the first panel 1, baffle plate 1-2-1 is outward extended with rib 1-2-2, between baffle plate 1-2-1 and rib 1-2-2, being roughly 90 ° is connected, the maximum outline of the height of baffle plate 1-2-1 and the first panel 1 is contour, on rib 1-2-2, there is arc bump 1-2-3.There are a lot of crisscross reinforcement 1-1 at the back side that this plastic one is, ejecting mechanism a lot of putter components of need to arranging, and completing while releasing action, most cases, these push rods are stressed larger and very unbalanced, easily fracture; The 2nd, there is inclined hole 3-2 the side of plastic, present most mould adopts side-parting core-pulling mechanism, undercut face and main parting line sequential parting, organ is repeatedly bearing varying load in die sinking matched moulds process, in batch production, easily producing fatigue wear lost efficacy, cause the demoulding unreliable, maintenance is frequent, affects quality and production efficiency; The 3rd, plastic largest contours has strip breach 1-2, and the design of die joint directly affects automatic demoulding.
Utility model content
The technical problems to be solved in the utility model is: have a lot of muscle, side to have inclined hole and the design feature such as largest contours place is jagged for the working of plastics back side, a kind of injection forming mold of proposing the full-automatic demoulding is provided, realize reliably the full-automatic demoulding, improve plastic part production efficiency and ensure the quality of products stable.
The utility model solves the technical scheme that its technical problem adopts: a kind of injection forming mold of the full-automatic demoulding, be disposed with from the bottom to top Bottom clamp plate, push rod push pedal, ejector pin retaining plate, moving platen, solid plate and top clamping plate with moving platen amalgamation
In moving platen, be provided with core, in solid plate, be provided with the die cavity with core amalgamation, mould two cavity configurations of two many muscle of swash plate plastics of its inner formation injection moulding simultaneously after die cavity and core amalgamation, consistent and the reverse symmetry setting of two cavity body structures, between two cavitys, be provided with the transverse flow channels that leads to two cavitys, wherein the structure of a cavity comprises the first chamber that is used to form many muscle of swash plate plastic structure on core, with the die joint that is used to form many muscle of swash plate plastic Facad structure on die cavity, described top clamping plate is provided with cast gate, cast gate is connected with longitudinal cold slug well, described cold slug well is through solid plate, die cavity is connected with transverse flow channels, in push rod push pedal, be fixed with sprue puller, sprue puller is supported on the bottom of cold slug well through moving platen and core, on described ejector pin retaining plate, be provided with release link and inclined to one side push rod, described release link is supported on the bottom of solid plate through moving platen, described inclined to one side push rod withstands on the reinforcement at many muscle of swash plate plastic back side through moving platen and core, the first half of described inclined to one side push rod is flat square bar shaped.The inclined to one side push rod structure that the utility model is square, the release location of this push rod all can be arranged in muscle structure, the action direction of release power is on the cross section of muscle, intensity improves greatly, and meanwhile, push rod is convenient to equilibrium and is arranged, each push rod stress equalization, release steadily, be not easy to fracture, improved service life.
Further, particularly, on described core, there is plane one and plane two, plane one is higher than plane two, between plane one and plane two, connect by inclined-plane, it is excessive that the corner on plane two and inclined-plane is arc surface, the curved panel back side laminating of arc surface and many muscle of swash plate plastic, described plane two, on inclined-plane and arc surface, be respectively arranged with and be used to form the first panel, the first cavity of the second panel and curved panel, the second cavity and arc cavity, the first described cavity, in the overall concave chamber that the second cavity and arc cavity are linked to be, be also provided with the groove in length and breadth that is used to form reinforcement, die joint on described die cavity and plane one, inclined-plane, the multi-plane structure that arc surface and plane two are linked to be matches.Bottom portion of groove offers square opening in length and breadth, and described inclined to one side push rod is just in time supported on reinforcement bottom through square opening.The utility model, for the crisscross reinforcing rib structure in the plastic back side, has adopted a kind of square pusher structure.At present a lot of plastics back side is crisscross muscle structure entirely, but not the plastic body thickness of muscle part is very thin again, if adopt conventional push rod, when the demoulding, stressed position is at plastic body, insufficient strength, easily deform the even defect of cracking of plastic, causes plastic parts moulding failure, plastic body majority is curved surface simultaneously, many push rods are distributed on curved surface, and push rod also can should be and be subject to force unbalance, cause push rod often to fracture, the normally demoulding, mould must be reprocessed, and has increased mold repair number of times, the corresponding prolongation of manufacturing cycle of plastic.The utility model push rod is the surface configuration that the cross sectional shape of the inclined to one side push rod first half coordinates muscle, the release location of all push rods all can be arranged in muscle structure.Like this, in push, release the action direction of power on the cross section of muscle, intensity improves greatly, and plastic can not deform.Meanwhile, the easy equilibrium of push rod acting on muscle is arranged, and each push rod stress equalization is released steadily, is not easy to fracture, and has improved service life.
On the die joint of described die cavity, also have and be used to form inserting of strip breach and baffle plate and rib.Whether rationally and the manufacturing process of mould parting Surface Design directly has influence on the whether demoulding smoothly of plastic, also affect mould structure.The basis of the utility model taking product largest contours as parting Surface Design, to the plastic largest contours local method that adopts benefit face jaggy, by gap fill to contour with the largest contours of plastic, the plastic demoulding smoothly like this.The mold cavity of plastic indentation, there is bumped into the form of inserting, and has both been convenient to processing, can save again material, is also convenient to maintenance and changes, the service life that can improve whole secondary mould, the cost of reduction mould.
The utility model die casting system adopts sub marine gate, and the automatic breaking of realizing solidifying material for plastic when the demoulding separates, and cold slug well described in the utility model adopts anti-tapering cold slug well.The cold slug well of this structure can make and then mould dynamic model synchronizing moving of solidifying material, coordinates sprue puller to release action, can realize the full-automatic release of the solidifying material of running gate system, has avoided follow-up artificial clastotype completely.
One side of desired plastic has an inclined hole, according to the words of general method for designing moulding, need to design side-parting core-pulling mechanism, this mechanism requirement order parting, be the first parting of undercut face, then main parting line parting, in die sinking matched moulds process frequently, this mechanism easily lost efficacy, and caused the demoulding unreliable.Meanwhile, this mechanism structure complexity, has improved the difficulty of design, can greatly increase again the manufacturing cost of mould.The utility model adopts the mode of combined type core, can not use side core-drawing mechanism, and simple in structure, and the demoulding is reliable.Particularly, in described plane two, be also provided with the first semi-circular projection, on the die joint of die cavity, there is the second semi-circular projection with the first semi-circular projection amalgamation, the surface of the first semi-circular projection and the second semi-circular projection is inclined-plane, and the full circle external diameter of the first semi-circular projection and the second semi-circular projection amalgamation matches with inclined hole.The building core in hole is divided into two, and half is processed on die cavity, and half is processed on core, pieces together a core completing after mould closure.Meanwhile, amalgamation face does not adopt vertical plane amalgamation, but designs certain gradient, adopts inclined-plane amalgamation, and in the time that mould is closed, both easily amalgamations, can utilize inclined-plane to do certain guiding, and reduce frictional force; After amalgamation, in the time of moulding, can utilize again the clamp force of mould by two lobe core pressings tightly, very close to each other between two lobe cores, avoid the product overlap defect that causes because of the flash of combined type core, realize reliably moulding and the demoulding of plastic inclined hole.
The injection forming mold of the full-automatic demoulding also comprises coolant flow channel, and described coolant flow channel half is opened in plane one, and half is opened on the die joint of die cavity.
The beneficial effects of the utility model are, the injection forming mold of the full-automatic demoulding of the present utility model, realize reliably the full-automatic demoulding, promote the production efficiency of plastic, steady quality, meanwhile, due to designs simplification, reduce manufacture difficulty and the cost of mould, improved again service life and the precision of mould.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the positive perspective view that the utility model needs many muscle of swash plate plastic of injection moulding.
Fig. 2 is the back side perspective view that the utility model needs many muscle of swash plate plastic of injection moulding.
Fig. 3 is the general assembly drawing of the injection forming mold of the full-automatic demoulding of the utility model.
Fig. 4 is the cavity structure schematic diagram of the injection forming mold of the full-automatic demoulding of the utility model.
Fig. 5 is the core structure schematic diagram of the injection forming mold of the full-automatic demoulding of the utility model.
In figure: 1, the first panel, 1-1, reinforcement, 1-2, strip breach, 1-2-1, baffle plate, 1-2-2, rib, 1-2-3, arc bump, 2, the second panel, 3, curved panel, 3-1, " 7 " font breach, 3-2, inclined hole, 4, Bottom clamp plate, 5, push rod push pedal, 6, ejector pin retaining plate, 7, moving platen, 8, solid plate, 9, top clamping plate, 91, cast gate, 92, sprue bush, 10, core, 101, the first chamber, 102, plane one, 103, plane two, 1031, the first semi-circular projection, 104, inclined-plane, 105, arc surface, 106, coolant flow channel, 11, die cavity, 111, insert, 1111, arc groove, 112, the second semi-circular projection, 12, transverse flow channels, 13, cold slug well, 14, sprue puller, 15, release link, 16, push rod partially.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present utility model is only described in a schematic way, and therefore it only shows the formation relevant with the utility model.
Embodiment of the present utility model, needs many muscle of swash plate plastic long 60mm as shown in Figure 1, 2 of injection moulding, wide 51mm, the about 1.5mm of average wall thickness, minimum wall thickness (MINI W.) 0.7mm.Plastic requires outer surface bright and clean without burr, without shrink mark, without any open defects such as demoulding scuffings; It is gate location that diagram is specified end face A; Require designed mould can realize the full-automatic demoulding.This plastic component structure complexity, the many muscle in the back side, side have inclined hole and largest contours place jagged, these designs of all giving mould have brought certain difficulty with manufacturing.Plastic material therefor is ABS.
As in Figure 3-5, the injection forming mold of the full-automatic demoulding of the utility model, be disposed with from the bottom to top Bottom clamp plate 4, push rod push pedal 5, ejector pin retaining plate 6, moving platen 7, solid plate 8 and top clamping plate 9 with moving platen 7 amalgamations, in moving platen 7, be provided with core 10, in solid plate 8, be provided with the die cavity 11 with core 10 amalgamations, on the surface that to be moving platen 7 fit with solid plate 8, offer respectively the chamber for holding core 10 and die cavity 11, mould two cavity configurations of two many muscle of swash plate plastics of its inner formation injection moulding simultaneously after die cavity 11 and core 10 amalgamations, consistent and the reverse symmetry setting of two cavity body structures, between two cavitys, be provided with the transverse flow channels 12 that leads to two cavitys, wherein the structure of a cavity comprises the first chamber 101 that is used to form many muscle of swash plate plastic structure on core 10, with the die joint that is used to form many muscle of swash plate plastic Facad structure on die cavity 11, on described top clamping plate 9, be provided with cast gate 91, on cast gate 91, be provided with sprue bush 92, cast gate 91 is connected with longitudinal cold slug well 13, described cold slug well 13 is through solid plate 8, die cavity 11 is connected with transverse flow channels 12, in push rod push pedal 5, be fixed with sprue puller 14, sprue puller 14 is supported on the bottom of cold slug well 13 through moving platen 7 and core 10, on described ejector pin retaining plate 6, be provided with release link 15 and inclined to one side push rod 16, release link 15 is supported on the bottom of solid plate 8 through moving platen 7, described inclined to one side push rod 16 withstands on the reinforcement 1-1 at many muscle of swash plate plastic back side through moving platen 7 and core 10, the first half of described inclined to one side push rod 16 is flat square bar shaped.On core 10, there is plane 1 and plane 2 103, plane 1 is higher than plane 2 103, between plane 1 and plane 2 103, connect by inclined-plane 104, it is excessive that the corner on plane 2 103 and inclined-plane 104 is arc surface 105, arc surface 105 is fitted with curved panel 3 back sides of many muscle of swash plate plastic, plane 2 103, on inclined-plane 104 and arc surface 105, be respectively arranged with and be used to form the first panel 1, the first cavity of the second panel 2 and curved panel 3, the second cavity and arc cavity, the first cavity, in the overall concave chamber that the second cavity and arc cavity are linked to be, be also provided with the groove in length and breadth 106 that is used to form reinforcement 1-1, die joint on described die cavity 11 and plane 1, inclined-plane 104, the multi-plane structure that arc surface 105 and plane 2 103 are linked to be matches.On the die joint of die cavity 11, also have be used to form strip breach 1-2 and baffle plate 1-2-1 and rib 1-2-2 insert 111,111 arc grooves 1111 that offer for injection moulding arc bump 1-2-3 of inserting.Cold slug well 13 adopts anti-tapering cold slug well.In plane 2 103, be also provided with the first semi-circular projection 1031, on the die joint of die cavity 11, there is the second semi-circular projection 112 with the first semi-circular projection 1031 amalgamations, the surface of the first semi-circular projection 1031 and the second semi-circular projection 112 is inclined-plane, and the full circle external diameter of the first semi-circular projection 1031 and the second semi-circular projection 112 amalgamations matches with inclined hole 3-2.The injection forming mold of the full-automatic demoulding also comprises coolant flow channel 106, and coolant flow channel 106 half are opened in plane 1, and half is opened on the die joint of die cavity 11.
Injection mold of the present utility model is arranged on XS-ZY-125 horizontal injection press, and this model injection machine is common apparatus.Stationary mould for mould is connected on injection machine fixed form by top clamping plate 9, sprue bush 92, and mould dynamic model is arranged on injection machine mobile template.
Automatic demoulding process is as follows: at mould matched moulds state, plastics are through the moulding of pressurize cooling procedure in mold cavity, and it coolingly in running gate system becomes solidifying material simultaneously.Under injection machine effect, dynamic model moves down, fixed half and moving half is opened on die joint, because parting Surface Design is at plastic largest contours place, it is contour with the largest contours of plastic that plastic largest contours has the place of strip breach also by the method for benefit face, gap fill to be arrived, and ensured that like this in fixed half and moving half separation process, cover half die cavity can not pulled plastic.Dynamic model moves to certain distance, inclined hole combined type core separately, plastic shrinks and produces package power in cooling procedure, it can pack tightly on dynamic mould core, move down with dynamic model, solidifying material, because there is the cold slug well of anti-tapering, also moves down with dynamic model, plastic outer surface and solidifying material are all exposed to outside like this, for automatically releasing plastic and coagulating material and created condition.When dynamic model move to safe stripper distance from time, push rod on injection machine contacts with mould push piece plate, produces ejecting force, and push rod is fastened on push piece plate, ejecting force is passed to push rod, finally, force transmission is to the cross section of plastic muscle, under some push rod actings in conjunction, plastic is steadily released, sprue puller promotes solidifying material simultaneously, will coagulate material and release, and has realized like this automatic demoulding.
Taking above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, relevant staff can, not departing from the scope of this utility model technological thought, carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on description, must determine its technical scope according to claim scope.

Claims (6)

1. the injection forming mold of a full-automatic demoulding, it is characterized in that: be disposed with from the bottom to top Bottom clamp plate (4), push rod push pedal (5), ejector pin retaining plate (6), moving platen (7), solid plate (8) and top clamping plate (9) with moving platen (7) amalgamation
In moving platen (7), be provided with core (10), in solid plate (8), be provided with the die cavity (11) with core (10) amalgamation, mould two cavity configurations of two many muscle of swash plate plastics of its inner formation injection moulding simultaneously after die cavity (11) and core (10) amalgamation, consistent and the reverse symmetry setting of two cavity body structures, between two cavitys, be provided with the transverse flow channels (12) that leads to two cavitys, wherein the structure of a cavity comprises the first chamber (101) that is used to form many muscle of swash plate plastic structure on core (10), and on die cavity (11), be used to form the die joint of many muscle of swash plate plastic Facad structure, on described top clamping plate (9), be provided with cast gate (91), cast gate (91) is connected with longitudinal cold slug well (13), described cold slug well (13) is through solid plate (8), die cavity (11) is connected with transverse flow channels (12), in push rod push pedal (5), be fixed with sprue puller (14), sprue puller (14) is supported on the bottom of cold slug well (13) through moving platen (7) and core (10), on described ejector pin retaining plate (6), be provided with release link (15) and inclined to one side push rod (16), described release link (15) is supported on the bottom of solid plate (8) through moving platen (7), described inclined to one side push rod (16) withstands on the reinforcement (1-1) at many muscle of swash plate plastic back side through moving platen (7) and core (10), the first half of described inclined to one side push rod (16) is flat square bar shaped.
2. the injection forming mold of the full-automatic demoulding as claimed in claim 1, it is characterized in that: on described core (10), there is plane one (102) and plane two (103), plane one (102) is higher than plane two (103), between plane one (102) and plane two (103), connect by inclined-plane (104), plane two (103) is arc surface (105) excessively with the corner on inclined-plane (104), arc surface (105) is fitted with curved panel (3) back side of many muscle of swash plate plastic, described plane two (103), on inclined-plane (104) and arc surface (105), be respectively arranged with and be used to form the first panel (1), the first cavity of the second panel (2) and curved panel (3), the second cavity and arc cavity, the first described cavity, in the overall concave chamber that the second cavity and arc cavity are linked to be, be also provided with the groove in length and breadth (106) that is used to form reinforcement (1-1), die joint on described die cavity (11) and plane one (102), inclined-plane (104), the multi-plane structure that arc surface (105) and plane two (103) are linked to be matches.
3. the injection forming mold of the full-automatic demoulding as claimed in claim 2, is characterized in that: on the die joint of described die cavity (11), also have insert (111) that are used to form strip breach (1-2) and baffle plate (1-2-1) and rib (1-2-2).
4. the injection forming mold of the full-automatic demoulding as claimed in claim 2, is characterized in that: described cold slug well (13) adopts anti-tapering cold slug well.
5. the injection forming mold of the full-automatic demoulding as claimed in claim 2, it is characterized in that: in described plane two (103), be also provided with the first semi-circular projection (1031), on the die joint of die cavity (11), there is the second semi-circular projection (112) with the first semi-circular projection (1031) amalgamation, the surface of the first semi-circular projection (1031) and the second semi-circular projection (112) is inclined-plane, and the full circle external diameter of the first semi-circular projection (1031) and the second semi-circular projection (112) amalgamation matches with inclined hole (3-2).
6. the injection forming mold of the full-automatic demoulding as claimed in claim 2, is characterized in that: also comprise coolant flow channel (106), it is upper that described coolant flow channel (106) half is opened in plane one (102), and half is opened on the die joint of die cavity (11).
CN201420171292.0U 2014-04-09 2014-04-09 Full-automatic demolding Injection molding die Expired - Fee Related CN203739137U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420171292.0U CN203739137U (en) 2014-04-09 2014-04-09 Full-automatic demolding Injection molding die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103909627A (en) * 2014-04-09 2014-07-09 常州轻工职业技术学院 Injection molding mould capable of being fully-automatically de-molded

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103909627A (en) * 2014-04-09 2014-07-09 常州轻工职业技术学院 Injection molding mould capable of being fully-automatically de-molded

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Granted publication date: 20140730

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