CN207592761U - A kind of full aluminium casting mold - Google Patents

Abstract

The utility model discloses a kind of full aluminium casting molds, it includes ontology and exhaust unit, the exhaust unit is embedded on ontology, the body interior is equipped with die cavity, the side connection die cavity of the exhaust unit, the opposite side of exhaust unit are connect with body exterior, and the exhaust unit includes exhaust mold insert I and exhaust mold insert II.Full aluminium casting is with setting exhaust unit on mold, it can ensure to strengthen exhaust during die casting molten aluminum, accelerate cooling in cooling procedure, exhaust unit can be corresponded to the region that casting easily generates heat energy-saving position with exhaust and cooling required setting exhaust position, such as in mold.

Description

A kind of full aluminium casting mold

Technical field

The utility model is related to a kind of full aluminium casting molds.

Background technology

Influence low pressure casting product quality mainly has the defects of stomata, shrinkage porosite, misrun, and producing cause is that molten aluminum exists Contain gas in cavity filling process, casting cooling velocity is faster, and gas is not completely exhausted out in mold cavity, remains in cavity It is precipitated in the form of bubble when gas content is more than its solubility, the gas for having little time discharge is formed irregularly in cast-internal Shaggy hole.Another reason is that the exhaust structure of existing mold is limited only to the end of molten aluminum flow path It holds or positioned at extreme higher position, this has just limited to exhaust position, so that those aggregated gases far from exhaust positions Remain in mould inside.It is to improve having for full aluminium casting quality that the gas in molten aluminum is effectively discharged in full aluminium casting casting process Effect means especially realize that the gas of discharge any position is significant for improving full aluminium casting quality.

Invention content

The technical problems to be solved in the utility model is how to need to set with exhaust on mold to be vented position, thus To a kind of full aluminium casting mold.

In order to solve the above technical problems, the utility model adopts the following technical solution：The full aluminium casting includes this with mold Body and exhaust unit, the exhaust unit are embedded on ontology, and the body interior is equipped with die cavity, the side of the exhaust unit Connection die cavity, exhaust unit opposite side connect with body exterior, the exhaust unit include exhaust mold insert I and be vented mold insert II, the structure for being vented mold insert I is identical with the structure for being vented mold insert II, ruler of the size of exhaust mold insert I with being vented mold insert II It is very little identical, it is described exhaust mold insert I and ontology between connection gap formation can only allow gas by exhaust passage I, exhaust insert Between part II and ontology connection gap formation can only allow gas by exhaust passage II, exhaust mold insert I with exhaust mold insert II Between connection gap formation can only allow gas by exhaust passage III, the width of the exhaust passage I, exhaust passage II Width is both less than III width of exhaust passage.

It is outwardly rapid by exhaust passage I, exhaust passage II, exhaust passage III when exhaust unit is at the beginning of molten aluminum die casting Exhaust, plays the role of being vented rapidly, and after molten aluminum enters solidification stages full of die cavity, because having exhaust passage I, exhaust passage IIth, it is communicated at exhaust passage III with the external world so that exhaust passage I, exhaust passage II, exhaust passage III, which can be transmitted outwardly, to be come From the heat of molten aluminum, can be very good to reduce the heat of the molten aluminum near exhaust passage I, exhaust passage II, exhaust passage III Amount, prevents that the subregion from overheating and to generate shrinkage cavity and porosity bad.

Exhaust unit is arranged on mosaic mode on ontology, in order to obtain reliable connection structure and be convenient for exhaust unit It is vented freely, the technical program is using a kind of preferred connection structure and the structure of preferred exhaust unit.Specifically, ontology The through-hole for inlaying exhaust unit is equipped with, it is all the rectangle of fillet, the row that the cross section of the through-hole, which is in four corners, The cross section of gas mold insert I is in the rectangle that two corners of the same side are all fillet, and the cross section of the exhaust mold insert II is in same Two corners of side are all the rectangle of fillet.

Exhaust passage I, exhaust passage II, exhaust passage III are the connection gaps between two components, in order to realize control The width of connection gap, the utility model control connection gap size using the roughness on control unit surface.Preferably, institute Exhaust mold insert I is stated to be used to be used for the table connecting with ontology less than exhaust mold insert I with the roughness on surface that exhaust mold insert II is connect The roughness in face, the exhaust mold insert II are used to be used for less than exhaust mold insert II with the roughness on surface that exhaust mold insert I is connect The roughness on the surface being connect with ontology.

The utility model uses above-mentioned technical proposal：Full aluminium casting is with setting exhaust unit on mold, it is ensured that pressing Strengthen exhaust during cast aluminium liquid, accelerate cooling in cooling procedure, exhaust unit can be set with exhaust and cooling required Position is vented, such as the region that casting easily generates heat energy-saving position is corresponded in mold.

Description of the drawings

The utility model is further described in detail with reference to the accompanying drawings and detailed description.

Fig. 1 is a kind of structure diagram of full aluminium casting mold of the utility model；

Fig. 2 is the partial enlarged view of Fig. 1.

Specific embodiment

As shown in Figure 1, 2.The ontology 5 of full aluminium casting mold is equipped with the die cavity 1 of concave inward structure, is equipped on ontology 5 Exhaust unit 2.The exhaust unit 2 is fixedly mounted on mosaic mode on ontology 5.

Ontology 5 is equipped with for the through-hole of installing exhaust unit 2, and through-hole is through structure, through-hole one end connection die cavity, Other end connection mold exterior space.The cross section of through-hole is all the rectangle of fillet, the cross section at through-hole both ends in four corners Size is minimum compared with the cross sectional dimensions of other positions on through-hole.

Exhaust unit 2 includes two components that size is identical, structure is identical, is exhaust mold insert I 3 and exhaust mold insert II respectively 4.The cross section for being vented mold insert I 3 is in that two corners of the same side are all the rectangle of fillet, the cross section of the exhaust mold insert II 4 Two corners in the same side are all the rectangle of fillet；And the cross sectional dimensions at I 3 both ends of mold insert is vented with being vented on mold insert I 3 It is that minimum, II 4 both ends of exhaust mold insert cross sectional dimensions are other on mold insert II 4 with being vented that other positions cross sectional dimensions, which is compared, It is also minimum that position cross sectional dimensions, which is compared,.Exhaust mold insert I 3 and exhaust mold insert II 4 are embedded in through-hole in a manner of symmetric arrays It is interior, after installation, the side connection die cavity 1 of exhaust unit 2,5 external connection of opposite side and ontology of exhaust unit 2.It is vented mold insert I Between 3 and ontology 5 connection gap formation can only allow gas by exhaust passage I 6, exhaust mold insert II 4 and ontology 5 between connect Seam gap formation can only allow gas by exhaust passage II 7, exhaust mold insert I 3 and exhaust mold insert II 4 between connection gap shape Into can only allow gas by exhaust passage III 8.Since exhaust mold insert I 3 is used for the thick of the surface being connect with exhaust mold insert II 4 Rugosity is less than exhaust mold insert I 3 and is used for the roughness on surface being connect with ontology 5, and exhaust mold insert II 4 is used to connect with exhaust mold insert I 3 The roughness on the surface connect is less than exhaust mold insert II 4 and is used for the roughness on surface being connect with ontology 5.It is, exhaust mold insert I All be connected with each other between 3 and exhaust mold insert II 4 with relatively rough surface, exhaust mold insert I 3, exhaust mold insert II 4 and ontology 5 it Between all with the surface of smoother be connected with each other.Mode in this way promotes the width of exhaust passage I 6, exhaust passage II 7 Width is both less than III 8 width of exhaust passage.

In use, molten aluminum enters die cavity, exhaust mold insert I 3, exhaust mold insert II 4 after being heated, 5 three of ontology expand, and promote Improve exhaust mold insert I 3, exhaust mold insert II 4, the contiguity between 5 three of ontology, can increase in this way exhaust unit 2 with The contiguity of ontology 5 ensures that exhaust unit 2 is secured firmly to during die casting molten aluminum on ontology 5；At this point, exhaust passage I 6th, exhaust passage II 7, exhaust passage III 8 are enough to hinder molten aluminum by connection gap, but can ensure that gas passes through.Treat that molten aluminum is opened Cooling and gas begin when being precipitated from molten aluminum, exhaust mold insert I 3, exhaust mold insert II 4 with the air of mold exterior by carrying out hot friendship It changes rear temperature decreased significantly, exhaust passage I 6, II 7 gap of exhaust passage increase at this time, and air delivery function is strengthened, and thus may be used To be vented simultaneously by exhaust passage I 6, exhaust passage II 7, exhaust passage III 8, rate of heat exchange is accordingly accelerated, and product cooling adds Soon so as to prevent the region from undesirable shrinkage cavity shrinkage porosity occur.

Claims (3)

1. a kind of full aluminium casting mold, it is characterised in that：The full aluminium casting includes ontology (5) and exhaust unit (2) with mold, The exhaust unit (2) is embedded on ontology (5), and the ontology (5) is internally provided with die cavity (1), and the one of the exhaust unit (2) Side connection die cavity (1), the opposite side of exhaust unit (2) and ontology (5) external connection, the exhaust unit (2) is including exhaust insert Part I (3) and exhaust mold insert II (4), the structure for being vented mold insert I (3) is identical with the structure of exhaust mold insert II (4), exhaust insert The size of part I (3) is identical with the size of exhaust mold insert II (4), connection gap shape between the exhaust mold insert I (3) and ontology (5) Into can only allow gas by exhaust passage I (6), exhaust mold insert II (4) with ontology (5) between connection gap formed can only permit Perhaps gas by exhaust passage II (7), connection gap is formed and can only be allowed between exhaust mold insert I (3) and exhaust mold insert II (4) Gas by exhaust passage III (8), the width of the exhaust passage I (6), the width of exhaust passage II (7) both less than be vented Channel III (8) width.

2. full aluminium casting mold according to claim 1, it is characterised in that：The ontology (5) is equipped with to inlay row The through-hole of gas unit (2), the cross section of the through-hole are in the rectangle that four corners are all fillet, the horizontal stroke of the exhaust mold insert I (3) Section is in two of the same side in the rectangle that two corners of the same side are all fillet, the cross section of the exhaust mold insert II (4) Corner is all the rectangle of fillet.

3. full aluminium casting mold according to claim 1, it is characterised in that：The exhaust mold insert I (3) is used for and exhaust insert The roughness on the surface of part II (4) connection is less than exhaust mold insert I (3) for the roughness on surface being connect with ontology (5), described The roughness on surface of the exhaust mold insert II (4) for being connect with being vented mold insert I (3) is used for less than exhaust mold insert II (4) and ontology (5) roughness on the surface of connection.