CN206426381U - A kind of plastics helical teeth injection mold - Google Patents

Abstract

A kind of plastics helical teeth injection mold, belongs to injection forming mold technical field.It is made up of fixed half and moving half, cover half includes determining spray nozzle device, cover half seat, solid plate；Dynamic model, which includes being respectively equipped between cooling water channel, fixed half and moving half on moving platen, dynamic model seat, supporting leg and ejecting mechanism, solid plate and moving platen, is provided with guide pillar and gag lever post.Reasonable in design, manufacturing cost is cheap, and practical, and the finished product being molded by can also arrive and use ability accordingly, and be stripped safely and fast, reduce demoulding mortality.

Description

A kind of plastics helical teeth injection mold

Technical field

The utility model belongs to injection forming mold technical field, and in particular to a kind of plastics helical teeth injection mold.

Background technology

For some want injection molding turbofan mould, their requirement precision is high, and needs at a high speed Rotation is used, while noise content must be small, this requires that the convolution precision of product is high.Plastic molten melt fluid is all when injection There is the orientating type of oneself, the perpendicular direction in the direction stayed is variant, the degree of the speed different orientation of stream is also different.This Species diversity can cause the anisotropy of material mechanical performance, but for product, the difference of different directions can cause not Tongfang To the difference of size, form error will be produced, the rotating accuracy step-down of product can be made, the performance of product is influenceed.

The content of the invention

The utility model purpose provides a kind of plastics helical teeth injection mold, and the deficiency solved the above problems realizes many cast gates Injected and be convenient in demoulding quick.

The utility model is achieved in the following ways a kind of plastics helical teeth injection mold, is made up of fixed half and moving half, Cover half includes determining spray nozzle device, cover half seat, solid plate；Dynamic model includes moving platen, dynamic model seat, supporting leg and ejecting mechanism, solid plate Guide pillar and gag lever post are provided with being respectively equipped with moving platen between cooling water channel, fixed half and moving half.Described spray nozzle device passes through Sprue bush and condensate flow passage, positioned at the side of spray nozzle device provided with material nail is drawn, condensate runner is the snowflake for having eight angle points Shape, and be arranged on solid plate, fixed die insert is provided with solid plate, condensate runner is connected by cast gate with fixed die insert, Separation of flow guidance tape is provided between described cover half seat and solid plate.It is fixed straight provided with fixed spur gear workpiece in described moving platen The upper end of gear workpieces is installed with dynamic model rotating drum and it is provided with journal bearing between two, and rotating drum pressing plate is pacified by thrust bearing On dynamic model rotating drum, the circle centre position positioned at fixed spur gear workpiece is provided with push pipe, and one end of push pipe is contacted with solid plate, separately One end is then fixed on dynamic model seat.Described ejecting mechanism is arranged in dynamic model by the axis of guide.Described liftout attachment includes Fore-set, liftout plate, fixed liftout plate, push rod composition.

Above design feature be because for thickness it is less in the case of, more remote from cast gate, the speed of stream is slower, one The area that cast gate is responsible for filling is bigger, and anisotropy will be more serious, in order to overcome this defect to be exactly to increase cast gate.For one Individual fixed product, the cast gate of reasonable layout is more, and the area that each cast gate is responsible for filling is just smaller, and the difference of flow velocity will be got over Small, anisotropy will be smaller, therefore condensate runner is arranged to the snowflake shape of 8 cast gates.Furthermore, due to being helical gear, from Ejection must have rotating against between die cavity and product just can be so that this mould has another straight-tooth of iron and steel material quality in die cavity Wheel is as inserts, and fixed inserts is an accurate interior spur gear（It is identical with the inserts number of teeth）, so require to produce during ejection Product can not rotate, and only die cavity rotation just can be so that so being withstood in centrally disposed a set of push pipe on inserts, surrounding sets six roots of sensation top Bar is withstood in parts of plastics.

The beneficial effects of the utility model are reasonable in design, and manufacturing cost is cheap, and practical, be molded by come into Product can also arrive and use ability accordingly, and be stripped safely and fast, reduce demoulding mortality.

Brief description of the drawings

Fig. 1 is overall schematic；

Fig. 2 is top view；

Fig. 3 is side view；

Fig. 4 is condensate runner and product schematic diagram；

It is described as shown in Figure 1 to Figure 4, cover half seat（1）, solid plate（2）, spray nozzle device（3）, moving platen（4）, dynamic model seat（5）, branch Leg（6）, guide pillar（7）, gag lever post（8）, sprue bush（9）, condensate runner（10）, draw material nail（11）, fixed die insert（12）, separation of flow road Plate（13）, fixed spur gear workpiece（14）, dynamic model rotating drum（15）, journal bearing（16）, rotating drum pressing plate（17）, thrust bearing （18）, push pipe（19）, the axis of guide（20）, cooling water pipe（21）, fore-set（22）, liftout plate（23）, retaining plate（24）, push rod （25）.

Embodiment

A kind of plastics helical teeth injection mold, is made up of fixed half and moving half, and cover half includes determining spray nozzle device（3）, cover half seat （1）, solid plate（2）；Dynamic model includes moving platen（4）, dynamic model seat（5）, supporting leg（6）And ejecting mechanism, solid plate（2）And moving platen （4）On be respectively equipped with cooling water channel（21）, guide pillar is provided between fixed half and moving half（7）And gag lever post（8）.Described spray nozzle device （3）Pass through sprue bush（9）With condensate runner（10）Connection, positioned at spray nozzle device（3）Side provided with draw material nail（11）, condensate stream Road（10）To there is the snowflake shape of eight angle points, and it is arranged on solid plate（2）On, solid plate（2）It is interior to be provided with fixed die insert （12）, condensate runner（10）Pass through cast gate and fixed die insert（12）Connection, described cover half seat（1）With solid plate（2）Between set There is separation of flow guidance tape（13）.Described moving platen（4）It is interior to be provided with fixed spur gear workpiece（14）, fixed spur gear workpiece（14）It is upper End is installed with dynamic model rotating drum（15）And it is provided with journal bearing between two（16）, rotating drum pressing plate（17）Pass through thrust bearing （18）Installed in dynamic model rotating drum（15）On, positioned at fixed spur gear workpiece（14）Circle centre position be provided with push pipe（19）, push pipe （19）One end be located at solid plate（2）Die cavity at, the other end be then fixed on dynamic model seat（5）On.Described ejecting mechanism passes through The axis of guide（20）In dynamic model.Described liftout attachment includes fore-set（22）, liftout plate（23）, fixed liftout plate（24）、 Push rod（25）Composition.The step of being stripped：With separating for dynamic model, the completely out cover half of product.At this moment ejecting mechanism is opened It is dynamic, in the presence of ejecting force, fore-set（22）, drive top plate（23）, retaining plate（24）, push rod（25）, push pipe（19）, will Start ejection in the driven die cavity of product, while ejection, be supported on thrust bearing（18）And journal bearing（16）Die cavity rotation Turn, push rod is hung over until product will be ejected completely in the driven die cavity of product（25）On.Meanwhile, in the presence of slide fastener, with The die sinking movement of dynamic model, solid plate（2）By in tow in guide pillar（7）It is upper to slide, encounter gag lever post（8）Correct position when, drive Separation of flow guidance tape（13）It is mobile, by runner condensate from drawing to deviate from material nail, at this moment, take out product and runner condensate, it is possible to close tight Mould, carries out injection moulding next time.

Claims (3)

1. a kind of plastics helical teeth injection mold, is made up of fixed half and moving half, cover half includes determining spray nozzle device（3）, cover half seat（1）、 Solid plate（2）, dynamic model include moving platen（4）, dynamic model seat（5）, supporting leg（6）And ejecting mechanism, it is characterised in that fixed half and moving half Between be provided with guide pillar（7）And gag lever post（8）；Described spray nozzle device（3）Pass through sprue bush（9）With condensate runner（10）Connection, Positioned at spray nozzle device（3）Side provided with draw material nail（11）, condensate runner（10）To there is the snowflake shape of eight angle points, and set Put in solid plate（2）On, solid plate（2）It is interior to be provided with fixed die insert（12）, condensate runner（10）Pass through cast gate and fixed die insert （12）Connection, described cover half seat（1）With solid plate（2）Between be provided with separation of flow guidance tape（13）；Described moving platen（4）Inside it is provided with Fixed spur gear workpiece（14）, fixed spur gear workpiece（14）Upper end dynamic model rotating drum is installed（15）And it is provided between two Journal bearing（16）, rotating drum pressing plate（17）Pass through thrust bearing（18）Installed in dynamic model rotating drum（15）On, positioned at fixed straight Gear workpieces（14）Circle centre position be provided with push pipe（19）, push pipe（19）One end be located at solid plate（2）Die cavity at, the other end is then It is fixed on dynamic model seat（5）On；Described ejecting mechanism passes through the axis of guide（20）In dynamic model.

2. a kind of plastics helical teeth injection mold according to claim 1, it is characterised in that described liftout attachment includes top Post（22）, liftout plate（23）, fixed liftout plate（24）, push rod（25）Composition.

3. a kind of plastics helical teeth injection mold according to claim 1, it is characterised in that solid plate（2）And moving platen（4） On be respectively equipped with cooling water channel（21）.