CN205414410U - Improve forming die that card held in palm surperficial current mark - Google Patents

Improve forming die that card held in palm surperficial current mark Download PDF

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Publication number
CN205414410U
CN205414410U CN201620282730.XU CN201620282730U CN205414410U CN 205414410 U CN205414410 U CN 205414410U CN 201620282730 U CN201620282730 U CN 201620282730U CN 205414410 U CN205414410 U CN 205414410U
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China
Prior art keywords
runner
mould
cover
die
flow
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Active
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CN201620282730.XU
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Chinese (zh)
Inventor
郭忠臣
张亮
白珍敏
高波
杨伟
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Huizhou Weibo Precision Technology Co Ltd
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Huizhou Weibo Precision Technology Co Ltd
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Priority to CN201620282730.XU priority Critical patent/CN205414410U/en
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Abstract

The utility model provides a can improve the forming die that the cell -phone card held in the palm surperficial current mark, including cover half and movable mould, set up between cover half and the movable mould to the die joint, be equipped with cover half mould benevolence in the cover half, be equipped with movable mould mould benevolence in the movable mould, be equipped with the die cavity respectively in the merciful and peaceful cover half mould benevolence of movable mould mould, have a plurality of runners on the die cavity, still be equipped with the runner in the merciful and peaceful cover half mould benevolence of movable mould mould, the runner corresponds the runner position and is equipped with a plurality of side flow ways including the sprue and the subchannel that communicate each other on, and the side flow way communicates through runner and die cavity, and the side flow is said and is the stairstepping. The utility model discloses a side flow way of notch cuttype, feed flow of fluid mode when disturbbing the card and holding in the palm injection moulding makes original injection and torrent mode take place the change, flow cracks just consequently and disappear, just no longer the exert an influence black line of quality of the surface of product, the while inject the pressurize stage can not produce the feed yet in the segregation of binder, can eliminate the bad influence of current mark.

Description

A kind of mould improving Kato surface flow marks
Technical field
The utility model relates to Mould for Metal Injection tool field, particularly relates to a kind of metal powder injection molding mobile phone Kato mould improving surface flow marks.
Background technology
Metal injection molded is the new metallic element process technology of developed rapidly the most in the world, its advantage be exactly can the complicated metallic element of production miniature precision economic, large batch of, the stable performance of product, even density.General technical process is the feeding the trickleest metal dust and organic binder bond being mixed into and having mobility, injector is used to inject in the mould with part shape, form injection blank, it is then passed through novel defatting technology abjection binding agent and through oversintering, its high compaction is made to become metallic article, in whole production process, will obtain the product of qualified shape, the structure of mould has the most just become one of key factor with design.Although metal injection molded mould is similar to mould for plastics structural principle, but metal injection molded contain due to blank more than 90% metal dust, so the intensity of blank is low, binding agent also easily segregation during injection.Mobile phone Kato is more special due to its architectural feature, belongs to the elongated parts that thin-walled draw ratio is big.Select side runner directly to feed when designing for this type of product mold as far as possible, so flow process is short, easily it is full of mould, but when the mould so manufactured carries out injection moulding, a critical defect can be there is: at cast gate, produce the current mark of black, form obvious striated vestige at product surface after sintering, have a strong impact on outward appearance, product even can be made to produce layering, problem of Cracking.
Utility model content
For the problems referred to above, the utility model provides a kind of mould that can improve mobile phone Kato surface flow marks, including fixed half and moving half, is set to die joint between described fixed half and moving half;It is provided with cover half die in described cover half, in described dynamic model, is provided with dynamic model die;It is respectively equipped with die cavity on described dynamic model die and cover half die, described die cavity has multiple cast gate;Being additionally provided with runner on described dynamic model die and cover half die, described runner includes sprue and the runner being interconnected, and on described runner, corresponding gate location is provided with multiple side runner, and described side runner is connected with die cavity by cast gate, and described side runner is stairstepping.The type of flow of feeding fluid when using step-like side runner can upset Kato injection moulding, makes original injection and turbulent flow pattern there occurs change, makes flow cracks therefore disappear.
Preferably, described side runner width is identical with cast gate width.
It is further preferred that described side runner width and cast gate width are 6mm, side runner and cast gate junction thickness are 0.4mm.
Preferably, described side runner maximum gauge is identical with runner diameter.
Further preferred, described side runner maximum gauge and runner diameter are 4mm.
Preferably, described side runner gradient is 35 °.
Preferably, described side runner quantity is 4.
The utility model have employed the side runner of notch cuttype, the type of flow of feeding fluid when upsetting Kato injection moulding, original injection and turbulent flow pattern is made to there occurs change, the most therefore flow cracks disappear, the surface of product the most no longer produces the black line affecting quality, also will not produce the segregation of binding agent in feeding at injection packing stage simultaneously, the impact that current mark is bad can be eliminated.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment cover half schematic diagram.
Fig. 2 is the utility model embodiment dynamic model schematic diagram.
Fig. 3 is the utility model embodiment cover half die schematic diagram.
Fig. 4 is the utility model embodiment dynamic model die schematic diagram.
Fig. 5 is the utility model embodiment runner schematic diagram.
Fig. 6 is the utility model embodiment side runner schematic diagram.
Detailed description of the invention
The utility model is explained in further detail below in conjunction with accompanying drawing and embodiment for the ease of it will be appreciated by those skilled in the art that.
A kind of mould improving Kato surface flow marks as shown in Figure 1, 2, have employed two template die structures, including cover half 1 and dynamic model 2, is set to die joint 3 between cover half 1 and dynamic model 2;Arranging cover half die 4 in cover half 1, arranging in dynamic model to arrange on dynamic model die 5, dynamic model die 5 and cover half die 4 has die cavity 6 respectively.
As shown in Fig. 3,4,5, the runner of tubular it is additionally provided with on dynamic model die 5 and cover half die 4, tubular is used to be conducive to the flowing of feeding, runner includes sprue 9 and the runner 10 being interconnected, sprue 9 bore 5mm, 2 ° of a diameter of 4mm of runner 10 of taper angle, the bottom of sprue 9 sets slag well 11, for collecting cold burden, distalmost end at runner 10 is designed with cold burden storing position 14, store runner cold burden, it is ensured that be filled with the stability of the feeding of die cavity 6, to ensure the product quality of Kato 8.The gate location of die cavity 6 is arranged on the straightway position of Kato 8, in order to easily departing from after Kato 8 shaping and take, be correspondingly provided with 4 step-like side runners 7 at gate location, side runner 7 with cast gate 12 on the same line, is connected with die cavity 6 by cast gate 12.Air discharge duct 13 has also been offered, in order to exhaust during injection feeding on the die joint of this external dynamic model die 5.
As shown in Figure 6, the side runner 7 of notch cuttype is a wedge structure, the thickest with the part that runner 10 is connected, and thickness is 4mm, is 0.4mm with cast gate 12 junction thickness, and gradient is 35 °.
When carrying out Kato injection moulding, feeding is molded in entering die cavity 6 by sprue 9, runner 10, side runner 7, cast gate.So when feeding flows through side runner 7 with higher speed, due to the fluctuating ladder on side runner 7, upset the type of flow of feeding fluid, made original injection and turbulent flow pattern there occurs change, the most therefore flow cracks disappear, and the surface of product the most no longer produces the black line affecting quality.Also will not produce the segregation of binding agent in feeding at injection packing stage simultaneously, eliminate the impact that current mark is bad.
Being more than specific implementation of the present utility model, it describes more concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these obvious alternative forms belong to protection domain of the present utility model.

Claims (7)

1. improve a mould for Kato surface flow marks, including fixed half and moving half, between described fixed half and moving half, be set to die joint;It is provided with cover half die in described cover half, in described dynamic model, is provided with dynamic model die;It is respectively equipped with die cavity on described dynamic model die and cover half die, described die cavity has multiple cast gate;Being additionally provided with runner on described dynamic model die and cover half die, described runner includes sprue and the runner being interconnected, and on described runner, corresponding gate location is provided with multiple side runner, and described side runner is connected with die cavity by cast gate;It is characterized in that: described side runner is stairstepping.
A kind of mould improving Kato surface flow marks the most as claimed in claim 1, it is characterised in that: described side runner width is identical with cast gate width.
A kind of mould improving Kato surface flow marks the most as claimed in claim 2, it is characterised in that: described side runner width and cast gate width are 6mm, and side runner and cast gate junction thickness are 0.4mm.
4. a kind of mould improving Kato surface flow marks as described in claim 1 or 2 or 3, it is characterised in that: described side runner maximum gauge is identical with runner diameter.
A kind of mould improving Kato surface flow marks the most as claimed in claim 4, it is characterised in that: described side runner maximum gauge and runner diameter are 4mm.
6. a kind of mould improving Kato surface flow marks as described in claim 1 or 2 or 3, it is characterised in that: described side runner gradient is 35 °.
7. a kind of mould improving Kato surface flow marks as described in claim 1 or 2 or 3, it is characterised in that: described side runner quantity is 4.
CN201620282730.XU 2016-04-07 2016-04-07 Improve forming die that card held in palm surperficial current mark Active CN205414410U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620282730.XU CN205414410U (en) 2016-04-07 2016-04-07 Improve forming die that card held in palm surperficial current mark

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620282730.XU CN205414410U (en) 2016-04-07 2016-04-07 Improve forming die that card held in palm surperficial current mark

Publications (1)

Publication Number Publication Date
CN205414410U true CN205414410U (en) 2016-08-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620282730.XU Active CN205414410U (en) 2016-04-07 2016-04-07 Improve forming die that card held in palm surperficial current mark

Country Status (1)

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CN (1) CN205414410U (en)

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