CN205969776U - Mould gating system - Google Patents

Abstract

The utility model discloses a mould gating system, including sprue, subchannel and a plurality of runner, the subchannel is connected respectively sprue and a plurality of runner, the runner with the die cavity intercommunication of mould, the bore of runner along with its with distance between the sprue and confirm the distance the bore of sprue runner far away more is big more. The utility model discloses technical scheme designs the size of runner through the distance according to runner and sprue for when the melt injected each die cavity into, runner that each die cavity corresponded department reached the balance to the pressure of melt, thereby made in balanced even each die cavity of injection of melt, had avoided appearing lieing in the terminal die cavity of subchannel results in lacking the material because of the lack of fill phenomenon.

Description

Die casting system

Technical field

The utility model is related to injection mold field, particularly to a kind of die casting system.

Background technology

The running gate system of existing injection mold has generally included sprue, runner and multiple cast gate, this cast gate and note The die cavity connection of mould, melt through runner distribution, then passes through each cast gate after the nozzle of injection machine enters sprue Have respectively entered in each die cavity of mould.In actual production process, in the injecting products of a multi-cavity mold, positioned at outermost Product usually occur that lack of fill leads to product to lack the phenomenon of material, trace it to its cause and be because the cast system of existing injection mold In system, the cast gate caliber size corresponding to each die cavity is all identical, and the distance between each cast gate of each die cavity and sprue Difference, because apart from sprue farther out, melt have lost more pressure in runner, lead to is melt to outermost die cavity Flow resistance excessive, causing distant die cavity melt easily cannot complete filling of phenomenon.

Utility model content

Main purpose of the present utility model is to propose a kind of die casting system it is intended to solve to be located in existing a multi-cavity mold The technical problem of lack of fill in the injecting products in outside, improve the ratio of briquetting of product.

For achieving the above object, the utility model proposes die casting system, including sprue, runner with multiple pour Mouthful, described runner connects described sprue and multiple cast gate respectively, and described cast gate is connected with the die cavity of described mould, described pours Mouthful bore determine the distance between with described sprue with it, apart from the more remote cast gate of described sprue bore more Greatly.

Preferably, described runner includes the first runner and multiple the second runner being connected respectively, institute with cast gate The other end stating multiple second runners is connected on described first runner, and described sprue is connected to described first point The midpoint of runner, the cast gate bore corresponding to the second runner in described first runner outermost end is maximum.

Preferably, two outer ends of described first runner are respectively equipped with slag well.

Preferably, between described runner and cast gate, circular arc is excessive.

Technical solutions of the utility model are passed through between cast gate and sprue according to corresponding to each die cavity of injection mold Distance, to design the size of cast gate, makes the bore apart from the more remote cast gate of sprue bigger, apart from the more remote cast gate of sprue Bore is less, and then identical apart from the bore of the equal multiple cast gates of sprue；When making melt be injected into each die cavity, various At cast gate corresponding to chamber, balance is reached to the pressure of melt, so that melt balance is uniformly injected in each die cavity, keep away The die cavity having exempted to occur being located at runner end leads to because of lack of fill lack the phenomenon of material.

Brief description

In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.

Fig. 1 is the structural representation of the utility model die casting system.

The realization of the utility model purpose, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe it is clear that described embodiment is only a part of embodiment of the present utility model, rather than all Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise Lower obtained every other embodiment, broadly falls into the scope of the utility model protection.

If it is to be appreciated that relate in the utility model embodiment directionality instruction (such as upper and lower, left and right, front, Afterwards ...), then directionality instruction be only used for explain relative between each part under a certain particular pose (as shown in drawings) Position relationship, motion conditions etc., if this particular pose changes, directionality instruction also correspondingly changes therewith.

If in addition, relating to the description of " first ", " second " etc. in the utility model embodiment, this " first ", " the Two " description etc. is only used for describing purpose, and it is not intended that instruction or imply its relative importance or implicit indicate indication The quantity of the technical characteristic showing.Thus, define " first ", the feature of " second " can be expressed or implicitly include at least one Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill Based on personnel are capable of, will be understood that this technical side when the combination appearance of technical scheme is conflicting or cannot realize The combination of case does not exist, also not within the protection domain that the utility model requires.

As shown in figure 1, an embodiment of the utility model die casting system, including sprue 1, runner 2 and many Individual cast gate 3, described runner 2 connects described sprue 1 and multiple cast gate 3 respectively, and described cast gate 3 is connected with the die cavity of described mould Logical, the bore of described cast gate 3 determines the distance between with described sprue 1 with it, apart from described more remote the pouring of sprue 1 The bore of mouth 3 is bigger.

The present embodiment technical scheme passes through the distance between cast gate 3 and sprue 1 according to corresponding to each die cavity of mould To design the size of cast gate 3, to make the bore apart from the more remote cast gate of sprue 13 bigger, apart from the more remote cast gate of sprue 13 Bore is less, and then identical apart from the bore of the equal multiple cast gates 3 of sprue 1；As shown in fig. 1, in figure is located at interposition Four cast gates 3 put are relatively near apart from sprue 1, four additional cast gate 3 apart from sprue 1 farther out, therefore, positioned at middle four The bore of cast gate 3 is less than the bore of four additional cast gate 3；So, when melt enters runner 2 from sprue 1 and flows to respectively During each cast gate 3, flow to the melt of distant cast gate 3 because the bore of this cast gate 3 larger, decrease the pressure to melt for this cast gate Power, counteracts between this cast gate 3 and sprue 1 because distance increases to the pressure caused by this cast gate 3 so that melt injection is each Individual from sprue 1 apart from different die cavities when, at the cast gate 3 corresponding to each die cavity, balance is reached to the pressure of melt so that Melt balance is uniformly injected in each die cavity, it is to avoid the die cavity occurring being located at runner 2 end is led because of lack of fill Cause to lack the phenomenon of material.

As shown in figure 1, the distribution schematic diagram of a sprue 1 cited by the present embodiment and runner 2 and cast gate 3, point Runner 2 includes the first runner 21 and multiple second runner 22, and one end of multiple second runners 22 is poured with multiple respectively Mouth 3 corresponds connection, and the other end is connected on the first runner 21, and sprue 1 is connected in the first runner 21 Point, cast gate 3 bore corresponding to the second runner 22 in the first runner 21 outermost end is maximum；So, positioned in figure Centre 4 cast gate 3 all equal with the distance of sprue 1, its caliber size is identical；Four additional is located at 21 liang of the first runner The cast gate 3 corresponding to the second runner 22 on end is also equal with the distance of sprue 1, and the size of its bore is also identical, such as This, in the die casting system that the present embodiment 1 goes out 8, the cast gate 3 of only two kinds of bores, decrease different big in running gate system Small-bore cast gate quantity, convenient processing.

Further, two outer ends of described first runner 21 are respectively equipped with slag well 4, slag well 4 is used for storing often Melt front end cold burden when once injection starts, it is to avoid cold burden enters the quality of impact injecting products in die cavity；First runner 21 and second circular arcs between runner 22 and the second runner 22 and cast gate 3 excessively, further reduce the first runner 21 With the second runner 22 and cast gate 3 to the pressure caused by melt, so that melt flows more smoothly.

The foregoing is only preferred embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, Every equivalent structure change under inventive concept of the present utility model, made using the utility model specification and accompanying drawing content Change, or directly/be indirectly used in other related technical fields and be included in scope of patent protection of the present utility model.

Claims (4)

1. a kind of die casting system, including sprue, runner and multiple cast gate it is characterised in that described runner is distinguished Connect described sprue and multiple cast gate, described cast gate is connected with the die cavity of described mould, the bore of described cast gate with its with The distance between described sprue and determine, bigger apart from the bore of the more remote cast gate of described sprue.

2. die casting system as claimed in claim 1 it is characterised in that described runner include the first runner and Multiple the second runners being connected with cast gate respectively, the other end of the plurality of second runner is connected to described first point On runner, described sprue is connected to the midpoint of described first runner, second in described first runner outermost end Cast gate bore corresponding to runner is maximum.

3. die casting system as claimed in claim 2 is it is characterised in that set respectively on two outer ends of described first runner There is slag well.

4. die casting system as claimed in claim 1 it is characterised in that between described runner and cast gate circular arc excessive.