CN209753984U - Aluminum alloy connecting rod die with annularly distributed cavities - Google Patents

Abstract

The utility model provides an aluminum alloy connecting rod mould that die cavity annular distributes, including cover half core and movable mould core, cover half core and movable mould core surround form inside be a plurality of connecting rod body die cavities of circular shape die casting chamber and equipartition in the die casting chamber outside, the center of cover half core is equipped with the feed port, the feed port link up to cover half core die casting chamber by the surface of cover half core, connecting rod body die cavity comprises the second connecting rod body die cavity of locating the first connecting rod body die cavity on the cover half core and locating the movable mould core, first exhaust passage and second exhaust passage have been seted up respectively to the connecting rod gusset shaping department of first connecting rod body die cavity and second connecting rod body die cavity, first exhaust passage and second exhaust passage run through cover half core and movable mould core respectively. The utility model discloses a connecting rod mould can a plurality of aluminum alloy connecting rods of die-casting production simultaneously, can the effectual cold shut, gas pocket or the shrinkage cavity of connecting rod shaping back gusset department of reduction, effectively improved the intensity of connecting rod.

Description

Aluminum alloy connecting rod die with annularly distributed cavities

Technical Field

The utility model belongs to the technical field of aluminum alloy connecting rod die-casting production mould, concretely relates to aluminum alloy connecting rod mould that die cavity ring-shaped distributes.

Background

The aluminum alloy connecting rod die-casting production die is characterized by comprising a die body, wherein the die body is provided with a plurality of aluminum alloy connecting rods, the aluminum alloy connecting rods are arranged in the die body, and the aluminum alloy connecting rods are arranged in the die body.

Aiming at an aluminum alloy connecting rod die-casting die with a connecting rod body cavity annularly distributed along a die-casting cavity, when the aluminum alloy connecting rod die-casting production die is used for carrying out connecting rod die-casting production, an aluminum alloy melt is poured into the connecting rod body cavity of the die, an exhaust runner groove communicated with the connecting rod body cavity is arranged in the die, the aluminum alloy melt drives air to enter the exhaust runner groove for exhaust, so that the aluminum alloy melt fills the connecting rod body cavity and is cooled to form a connecting rod, in the process that the aluminum alloy melt fills the connecting rod body cavity, a big end forming cavity and a small end forming cavity of the connecting rod body are often filled firstly under the action of air pressure in the connecting rod body cavity, and finally the aluminum alloy melt is gathered at a connecting rod rib plate forming part of the connecting rod body cavity, because the gas at the connecting rod rib plate forming part of the connecting rod body cavity cannot be exhausted, cold partitions, air holes or shrinkage holes, the service life of the engine is easily reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art exists, the utility model provides an aluminum alloy connecting rod mould that die cavity ring-shaped distributes, the inside of this connecting rod mould is equipped with along a plurality of connecting rod body die cavities of circular shape die-casting chamber outside annular equipartition, utilize this connecting rod mould can a plurality of aluminum alloy connecting rods of die-casting production simultaneously, all be equipped with the exhaust passage on the fixed mold core that corresponds to the gusset shaping department of every connecting rod body die cavity and the movable mold core, during the die-casting, molten liquid drive air to the gusset shaping department of connecting rod body die cavity, exhaust passage discharge connecting rod body die cavity can be followed to the air, thereby can effectually reduce the cold shut of gusset department behind the connecting rod body shaping, gas pocket or shrinkage cavity, the intensity of connecting rod.

The utility model discloses a following technical scheme realizes:

An aluminum alloy connecting rod die with annularly distributed cavities comprises a fixed die core and a movable die core, wherein the fixed die core and the movable die core are surrounded to form a die casting cavity with a circular inner part and a plurality of connecting rod body cavities communicated with the die casting cavity, a feed hole is formed in the center of the fixed die core and is communicated with the die casting cavity in the die core through the outer surface of the fixed die core, molten liquid is injected into the circular die casting cavity through the feed hole and flows to the connecting rod body cavities from the die casting cavity during die casting of a connecting rod, the connecting rod body cavities are uniformly distributed outside the circular die casting cavity, each connecting rod body cavity consists of a first connecting rod body cavity arranged on the fixed die core and a second connecting rod body cavity arranged on the movable die core, at least one first exhaust passage is formed at a connecting rod forming part in the first connecting rod body cavity, at least one second exhaust passage is formed at a connecting rod rib plate forming part in the second connecting rod body cavity, the first exhaust passage is communicated with the outer surface of the fixed mold core from the connecting rod rib plate forming position in the first connecting rod body cavity, the second exhaust passage is communicated with the outer surface of the movable mold core from the connecting rod rib plate forming position in the second connecting rod body cavity, molten liquid drives air to the rib plate forming position of the connecting rod body cavity during pressure casting of the connecting rod, and the air can be led out of the fixed mold core and the movable mold core from the first exhaust passage and the second exhaust passage respectively, so that cold insulation, air holes or shrinkage cavities at the rib plate position after the connecting rod body is formed can be effectively reduced, the strength of the connecting rod is effectively improved, and accidents caused by breakage of the connecting rod of an engine.

Further, all be equipped with the exhaust stifled piece in first exhaust passage and the second exhaust passage, all leave the clearance between exhaust stifled piece and first exhaust passage and the second exhaust passage, the exhaust stifled piece can prevent to block up first exhaust passage and second exhaust passage after the melt cooling, and during the die-casting connecting rod, the air of connecting rod gusset shaping department is discharged by the clearance, takes out the exhaust stifled piece after the connecting rod body drawing of patterns, can be convenient for dredge first exhaust passage and second exhaust passage.

Furthermore, the sections of the first exhaust passage and the second exhaust passage are circular or strip-shaped, the corresponding exhaust blocking piece is needle-shaped or plate-shaped, the appropriate section shape of the exhaust passage is selected according to the size and the exhaust amount of the connecting rod, and the exhaust amount of the square exhaust passage is larger than that of the circular exhaust passage.

Further, the fixed die core outer surface at the first exhaust passage outlet and the movable die core outer surface at the second exhaust passage outlet are both provided with key grooves, limiting keys are arranged in the key grooves, one ends of the exhaust plugs are fixed on the limiting keys, the exhaust plugs can be prevented from falling into the connecting rod body cavities, and the exhaust plugs can be taken out conveniently.

Further, all be equipped with the melt runner between the connecting rod body of rod shaping chamber of first connecting rod body die cavity and second connecting rod body die cavity and the circular shape die-casting chamber, the internal surface of movable mould core is equipped with a plurality of exhaust runner grooves, and is a plurality of exhaust runner groove extends and is linked together with connecting rod body microcephaly shaping chamber, connecting rod body of rod shaping chamber and connecting rod body major part shaping chamber respectively to second connecting rod body die cavity direction by the lateral wall of movable mould core, and during the die-casting connecting rod, the aluminum alloy melt flows in connecting rod body intracavity through the melt runner respectively by the die-casting chamber to air in the drive connecting rod body intracavity, air is discharged by exhaust runner groove, makes the aluminum alloy melt fill connecting rod body die cavity, forms the connecting rod after the cooling.

Further, with all be equipped with the stub bar package on the exhaust runner groove that the connecting rod body of rod body shaping chamber and the connecting rod body major part shaping chamber of second connecting rod body die cavity are linked together, and the stub bar package is close to second connecting rod body die cavity, all be equipped with the thimble hole on exhaust runner groove, stub bar package and the melt runner on the movable mould core, just the thimble hole runs through to the surface of movable mould core, and the exhaust can be assisted to the thimble hole, and during the die-casting connecting rod, exhaust runner groove, stub bar package and melt runner are filled to the aluminum alloy melt, and the cooling shaping aluminum alloy stub bar in exhaust runner groove, stub bar package and the melt runner is pushed up through the thimble during the connecting rod body drawing of patterns, can be convenient for the drawing of patterns, prevents that the connecting rod body from damaging.

furthermore, the size of the gap is 0.05-0.10 mm.

Furthermore, the first exhaust passage and the second exhaust passage are both two, the cross sections of the first exhaust passage and the second exhaust passage are circular, the connecting rod rib plate forming positions of the first exhaust passage in the first connecting rod body cavity are distributed at intervals along the connecting line direction of the connecting rod body large-end forming cavity and the connecting rod body small-end forming cavity, the connecting rod rib plate forming positions of the second exhaust passage in the second connecting rod body cavity are distributed at intervals along the connecting line direction of the connecting rod body large-end forming cavity and the connecting rod body small-end forming cavity, and the exhaust effect of the connecting rod rib plate forming positions can be effectively improved.

Furthermore, the number of the connecting rod body cavities is four, and the four connecting rod bodies can be die-cast at one time by using the connecting rod die.

According to the above technical scheme, the utility model provides a pair of annular distribution's of type chamber aluminum alloy connecting rod mould, beneficial effect lies in: the inside of this connecting rod mould is equipped with along a plurality of connecting rod body die cavities of the annular equipartition in the circular shape die-casting chamber outside, utilize this connecting rod mould can die-cast a plurality of aluminum alloy connecting rods of production simultaneously, be equipped with first exhaust flue and second exhaust flue on the fixed mold core and the movable mold core of the gusset shaping department corresponding to every connecting rod body die cavity respectively, during die-casting, melt driving air to the gusset shaping department of connecting rod body die cavity, fixed mold core and movable mold core can be drawn forth from first exhaust flue and second exhaust flue respectively to the air, thereby can effectually reduce the cold shut of gusset department behind the connecting rod body shaping, gas pocket or shrinkage cavity, the intensity of connecting rod has effectively been improved, avoid the engine because of the accident that the connecting rod fracture produced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a bottom view of the present invention.

fig. 3 is a schematic view of the inner surface structure of the fixed mold core of the present invention.

Fig. 4 is a schematic view of the inner surface structure of the movable mold core of the present invention.

3 fig. 3 5 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 a 3 line 3 a 3- 3 a 3 in 3 fig. 3 2 3. 3

Fig. 6 is a partial structural diagram of fig. 5 at I.

Fig. 7 is a schematic view of a partial structure at II in fig. 4.

In the drawings: 1-fixed mold core, 11-feed hole, 12-melt runner, 2-movable mold core, 21-exhaust runner groove, 22-stub bar bag, 23-thimble hole, 3-die casting cavity, 41-first connecting rod body cavity, 42-second connecting rod body cavity, 51-first exhaust channel, 52-second exhaust channel, 6-exhaust block, 7-key groove and 8-limit key.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

In the description of the present application, it is to be understood that the terms "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 7, an aluminum alloy connecting rod mold with annularly distributed cavities comprises a fixed mold core 1 and a movable mold core 2, wherein the fixed mold core 1 and the movable mold core 2 surround to form a die casting cavity 3 with a circular shape inside and four connecting rod body cavities communicated with the die casting cavity 3, a feed hole 11 is formed in the center of the fixed mold core 1, the feed hole 11 penetrates through the die casting cavity 3 in the fixed mold core 1 from the outer surface of the fixed mold core 1, during die casting of a connecting rod, molten liquid is injected into the circular die casting cavity 3 through the feed hole 11 and flows to the connecting rod body cavities from the die casting cavity 3, the four connecting rod body cavities are uniformly distributed outside the circular die casting cavity 3, each connecting rod body cavity is composed of a first connecting rod body cavity 41 arranged on the fixed mold core 1 and a second connecting rod body cavity 42 arranged on the movable mold core 2, two first air exhaust passages 51 are formed in a connecting rod rib plate forming position in the first connecting rod body cavity 41, two second exhaust passages 52 are formed in the connecting rod rib plate forming position in the second connecting rod body cavity 42, the first exhaust passage 51 is communicated to the outer surface of the fixed mold core 1 from the connecting rod rib plate forming position in the first connecting rod body cavity 41, the second exhaust passage 52 is communicated to the outer surface of the movable mold core 2 from the connecting rod rib plate forming position in the second connecting rod body cavity 42, during connecting rod die-casting, molten liquid drives air to the rib plate forming position of the connecting rod body cavity, and the air can be led out of the fixed mold core 1 and the movable mold core 2 from the first exhaust passage 51 and the second exhaust passage 52 respectively, so that cold insulation, air holes or shrinkage holes at the rib plate position after the connecting rod body is formed can be effectively reduced, the strength of the connecting rod is effectively improved, and accidents caused by the breakage of the connecting rod.

in this embodiment, all be equipped with exhaust stifled piece 6 in first exhaust passage 51 and the second exhaust passage 52, all leave the clearance between exhaust stifled piece 6 and first exhaust passage 51 and the second exhaust passage 52, the clearance size is 0.05 ~ 0.10mm, and exhaust stifled piece 6 can prevent to block up first exhaust passage 51 and second exhaust passage 52 after the melt cooling, the cross-section of exhaust passage is circular, and corresponding exhaust stifled piece 6 is the aciculiform, and during the die-casting connecting rod, the air of connecting rod gusset shaping department is discharged by the clearance, takes out exhaust stifled piece 6 after the connecting rod body drawing of patterns, can be convenient for dredge first exhaust passage 51 and second exhaust passage 52.

In this embodiment, the outer surface of the fixed mold core 1 at the outlet of the first exhaust passage 51 and the outer surface of the movable mold core 2 at the outlet of the second exhaust passage 52 are both provided with a key groove 7, a limit key 8 is arranged in the key groove 7, and one end of the exhaust blocking piece 6 is fixed on the limit key 8, so that the exhaust blocking piece 6 can be prevented from falling into the connecting rod body cavity, and the exhaust blocking piece 6 can be taken out conveniently.

In this embodiment, melt channels 12 are provided between the rod body forming cavities of the first and second rod body cavities 41 and 42 and the circular die casting cavity 3, the inner surface of the movable die core 2 is provided with a plurality of exhaust channel grooves 21, which are a plurality of the exhaust channel grooves 21 extending from the side wall of the movable die core 2 to the second rod body cavity 42 and respectively communicating with the rod body small end forming cavity, the rod body forming cavity and the rod body large end forming cavity, when the connecting rod is die-cast, the aluminum alloy melt flows into the rod body cavity from the die casting cavity 3 through the melt channels 12, and drives the air in the rod body cavity, and the air is discharged from the exhaust channel grooves 21, so that the rod body cavity is filled with the aluminum alloy melt, and the connecting rod is formed after cooling.

In this embodiment, the exhaust runner channel 21 communicated with the connecting rod body molding cavity and the connecting rod body large-end molding cavity of the second connecting rod body cavity 42 is provided with the stub bar packet 22, the stub bar packet 22 is close to the second connecting rod body cavity 42, the exhaust runner channel 21, the stub bar packet 22 and the melt runner 12 on the movable mold core 2 are provided with the thimble holes 23, the thimble holes 23 penetrate through the outer surface of the movable mold core 2, during the die casting of the connecting rod, the exhaust runner channel 21, the stub bar packet 22 and the melt runner 12 are filled with the aluminum alloy melt, and during the demolding of the connecting rod body, the ejector pins are used for ejecting the aluminum alloy stub bars cooled and formed in the exhaust runner channel 21, the stub bar packet 22 and the melt runner 12, so that the demolding can be convenient and the damage of the connecting rod body can be prevented.

The working principle of the embodiment is as follows: when the connecting rod is die-cast, a fixed die core 1 and a movable die core 2 are arranged on a die-casting device, molten aluminum alloy is injected into a circular die-casting cavity 3 from a feed port 11, a push rod and a pressure head are pushed up by a hydraulic press bottom cylinder of the die-casting device, the pressure head moves upwards in the die-casting cavity 3, the molten aluminum alloy fills an upper connecting rod body cavity and a lower connecting rod body cavity along a molten liquid flow channel 12, the molten aluminum alloy flows and drives air in the connecting rod body cavity, the molten aluminum alloy flows in the direction with small flow resistance in the connecting rod body cavity, the molten aluminum alloy flows in the directions of a connecting rod body small-head forming cavity and a connecting rod body large-head forming cavity at two ends respectively from a connecting rod body forming cavity, the molten aluminum alloy fills the connecting rod body small-head forming cavity and the connecting rod body large-head forming cavity, and a stub bar 22 connected with the connecting rod body small-head forming cavity and the connecting rod body large-, finally, the molten aluminum alloy is converged at the middle part of the forming part of the connecting rod rib plate, and in the process that the molten aluminum alloy is converged at the middle part of the forming part of the connecting rod rib plate, air is led out of the fixed mold core 1 and the movable mold core 2 from the first exhaust passage 51 and the second exhaust passage 52 which are communicated with the forming part of the connecting rod rib plate, so that cold partitions, air holes or shrinkage cavities at the rib plate after the connecting rod is formed are effectively reduced, and the strength of the connecting rod is effectively improved; after the molten aluminum alloy in the mold is cooled and formed, the ejector pins are used for ejecting the aluminum alloy stub bars in the stub bar packet 22 and the molten liquid runner 12 so as to demold, and the connecting rod body can be prevented from being damaged; four aluminum alloy connecting rods can be simultaneously die-cast and produced by utilizing the connecting rod die.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (9)

1. The utility model provides an aluminum alloy connecting rod mould of die cavity ring distribution, includes cover half core (1) and movable mould core (2), cover half core (1) and movable mould core (2) surround form inside be circular shape die casting chamber (3) and with a plurality of connecting rod body die cavities of die casting chamber (3) intercommunication, the center of cover half core (1) is equipped with feed port (11), and feed port (11) link up die casting chamber (3) to cover half core (1) in by the surface of cover half core (1), its characterized in that: the connecting rod body molding cavities are uniformly distributed outside the circular die-casting cavity (3), each connecting rod body molding cavity is composed of a first connecting rod body molding cavity (41) arranged on the fixed die core (1) and a second connecting rod body molding cavity (42) arranged on the movable die core (2), at least one first exhaust channel (51) is formed in a connecting rod rib plate molding position in the first connecting rod body molding cavity (41), at least one second exhaust channel (52) is formed in a connecting rod rib plate molding position in the second connecting rod body molding cavity (42), the first exhaust channel (51) penetrates through the outer surface of the fixed die core (1) from the connecting rod rib plate molding position in the first connecting rod body molding cavity (41), and the second exhaust channel (52) penetrates through the outer surface of the movable die core (2) from the connecting rod rib plate molding position in the second connecting rod body molding cavity (42).

2. The aluminum alloy connecting rod mold with annularly distributed cavities as claimed in claim 1, wherein: exhaust blocking pieces (6) are arranged in the first exhaust passage (51) and the second exhaust passage (52), and gaps are reserved among the exhaust blocking pieces (6), the first exhaust passage (51) and the second exhaust passage (52).

3. The aluminum alloy connecting rod mold with annularly distributed cavities as claimed in claim 2, wherein: the sections of the first exhaust passage (51) and the second exhaust passage (52) are circular or strip-shaped, and the corresponding exhaust blocking piece (6) is needle-shaped or plate-shaped.

4. The die of claim 2 or 3, wherein the die cavity is annularly distributed on the aluminum alloy connecting rod, and the die cavity comprises: the outer surface of the fixed mold core (1) at the outlet of the first exhaust passage (51) and the outer surface of the movable mold core (2) at the outlet of the second exhaust passage (52) are both provided with key grooves (7), limiting keys (8) are arranged in the key grooves (7), and one end of the exhaust blocking piece (6) is fixed on the limiting keys (8).

5. The aluminum alloy connecting rod mold with annularly distributed cavities as claimed in claim 4, wherein: all be equipped with melt runner (12) between the connecting rod body of rod molding chamber of first connecting rod body die cavity (41) and second connecting rod body die cavity (42) and circular shape die-casting chamber (3), the internal surface of movable mould core (2) is equipped with a plurality of exhaust runner grooves (21), and is a plurality of exhaust runner grooves (21) are extended and are linked together with connecting rod body microcephaly molding chamber, connecting rod body of rod molding chamber and connecting rod body major part molding chamber respectively to second connecting rod body die cavity (42) direction by the lateral wall of movable mould core (2).

6. The aluminum alloy connecting rod mold with annularly distributed cavities as claimed in claim 5, wherein: with all be equipped with stub bar package (22) on exhaust runner groove (21) that the connecting rod body of rod shaping chamber and the connecting rod body big end shaping chamber of second connecting rod body die cavity (42) are linked together, and stub bar package (22) are close to second connecting rod body die cavity (42), all be equipped with thimble hole (23) on exhaust runner groove (21), stub bar package (22) and the melt runner (12) on movable mould core (2), just thimble hole (23) run through to the surface of movable mould core (2).

7. the die set of claim 5 or 6, wherein the gap is 0.05 ~ 0.10 mm.

8. The aluminum alloy connecting rod mold with annularly distributed cavities as claimed in claim 7, wherein: the number of the first exhaust passages (51) and the number of the second exhaust passages (52) are two, and the cross sections of the first exhaust passages (51) and the second exhaust passages (52) are circular.

9. The aluminum alloy connecting rod mold with annularly distributed cavities as claimed in claim 8, wherein: the number of the connecting rod body cavities is four.