CN211489569U

CN211489569U - Die casting mould core

Info

Publication number: CN211489569U
Application number: CN201922425608.XU
Authority: CN
Inventors: 刘树高; 张绪吉
Original assignee: Shandong Kaiyuan Electronic Co Ltd
Current assignee: Shandong Kaiyuan Electronic Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-15
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a die-casting mold core, including quiet mold core, movable mold core and slipform core, be equipped with the shaping chamber on quiet mold core and the movable mold core respectively and divide the chamber, be equipped with the slipform chamber on the slipform core, be equipped with on the quiet mold core and divide communicating quiet mould sediment cave in chamber and quiet mould to arrange the sediment exhaust passage with quiet mould, be equipped with on the movable mold core and divide communicating movable mould sediment cave in chamber and movable mould to arrange the sediment exhaust passage, be equipped with second grade sediment cave and external channel on the movable mold core, second grade sediment cave feeds through with movable mould sediment exhaust passage and external channel respectively, quiet mold core, movable mold core and slipform core compound die after, quiet mould arranges the sediment exhaust passage and the cooperation of movable mould. The utility model discloses the sediment exhaust chain of arranging that the mould in-core was formed by sediment cave and exhaust row's cinder way not only arranges sediment and exhausts unobstructed, maintains the certain pressure of die cavity again when arranging sediment exhaust moreover, is favorable to guaranteeing the die casting quality, and the setting in second grade sediment cave can reduce leading sediment cave volume again in addition, the processing setting of being convenient for.

Description

Die casting mould core

Technical Field

The utility model belongs to the technical field of die casting die, specifically relate to a die casting die mold core.

Background

The casting obtained by pressure casting has high comprehensive mechanical property and is widely applied to the casting manufacture. The die-casting material, the die-casting machine and the die-casting die are three major factors in die-casting production, the die-casting die core is a core component of the die-casting die, and the die-casting die core has the defects that a casting cannot have air holes, slag inclusions and the like besides the requirements on the size and the shape of a product are met so as to ensure the mechanical property and the structural characteristic of the casting. Therefore, the slag discharge and exhaust performance of the die-casting die core is directly related to the quality of a die-casting piece. Particularly for die castings with special structures, the die cores of the die castings are required to be provided with the sliding die core blocks, so that the arrangement of slag cavities and slag discharge exhaust passages is influenced. The slag holes and the channel which are commonly adopted at present can not meet the requirements of slag discharging and air exhausting, and slag and gas accumulation is easy to generate, thereby affecting the product quality.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a modified die-casting mold core, solve the mold core that has the slider and arrange sediment and the not smooth problem of exhaust in the use, ensure the foundry goods quality.

In order to solve the technical problem, the utility model comprises a static mold core, a movable mold core and a slip form core which are connected in a combined way; the joint surfaces of the static mold core and the movable mold core are respectively provided with a static mold sub-cavity and a movable mold sub-cavity, the slip form core is provided with a slip form cavity, and the static mold sub-cavity, the movable mold sub-cavity and the slip form cavity are assembled together to form a forming cavity; the movable mold core is provided with a second-stage slag hole and an external channel, the second-stage slag hole is respectively communicated with the movable mold deslagging exhaust passage and the external channel, and the external channel is an open type open channel; and after the static mold core, the movable mold core and the sliding mold core are closed, the static mold deslagging exhaust passage is communicated with the movable mold deslagging exhaust passage in a matching way.

The end surface of the sliding mould core is elliptical, curved surfaces matched with the sliding mould core are respectively arranged on the static mould core and the movable mould core, and the sliding mould core is positioned in a curved surface cavity formed by the two curved surfaces and is closely connected with the curved surface cavity in a sliding manner.

The static mould slag hole and the static mould slag discharging exhaust passage are arranged on the static mould curved surface, the movable mould slag hole and the movable mould slag discharging exhaust passage are arranged on the movable mould curved surface, and the secondary slag hole and the external connecting passage are arranged on the buckling surface of the movable mould core.

An internal connecting channel communicated with the slag discharge exhaust passage of the movable mold is further arranged on one side of the second-stage slag hole, the internal and external connecting channels are arranged on the mold core buckling surfaces on two sides of the curved surface of the movable mold, the internal and external connecting channels are grooves arranged on the buckling surfaces of the movable mold core, and the external groove opening of the external connecting channel is positioned on the outer edge of the movable mold core.

The static mold core is provided with three static mold slag holes, the movable mold core is provided with two movable mold slag holes, and after the static mold core and the movable mold core are closed, the static mold slag holes and the movable mold slag holes are communicated with the second-stage slag holes through slag discharge exhaust passages.

After the structure of the oil adding device is adopted, the utility model discloses a mold core comprises quiet mold core, movable mold core and slipform core, and after each mold core compound die, the common spelling of the cavity that it was equipped with respectively is a complete shaping chamber. The static mold core and the movable mold core are provided with curved surfaces for accommodating the sliding mold core, the curved surfaces of the static mold core and the movable mold core are respectively provided with a slag hole and a slag discharge exhaust passage, and the mold connecting surface of the movable mold core is also provided with a second-level slag hole, an internal channel and an external channel. The second-stage slag hole on the movable mould core is communicated with the movable mould slag hole through an internal connecting channel and a movable mould deslagging exhaust channel, the movable mould slag hole is communicated with the forming cavity, an external connecting channel is communicated with the outer space of the mould core, and the movable mould deslagging exhaust channel and the static mould deslagging exhaust channel are communicated after the static mould core and the movable mould core are closed. A slag discharging and exhausting chain connected in series is formed in the mold core, so that slag discharging and exhausting are smooth, certain pressure is maintained during slag discharging and exhausting, product quality is guaranteed, and meanwhile, the occupied space of the front slag hole can be reduced due to the arrangement of the second-stage slag hole, and the processing and the arrangement are convenient.

Drawings

The invention will be further described with reference to the following figures and examples:

FIG. 1 is a general cross-sectional view of the present invention;

FIG. 2 is a sectional view of the sliding core of the present invention;

FIG. 3 is a schematic end view of the slide mold core of the present invention;

FIG. 4 is a schematic view of the mold surface of the static mold core of the present invention;

FIG. 5 is a perspective view of the static mold core of the present invention;

FIG. 6 is a schematic view of the mold surface of the movable mold core of the present invention;

FIG. 7 is a perspective view of the movable mold core of the present invention;

fig. 8 is a sectional view of a mold used in the present invention.

Detailed Description

Referring to fig. 1 to 7, the die-casting mold core comprises a static mold core 1, a movable mold core 2 and a sliding mold core 3 which are combined and connected; the static mold core 1 and the movable mold core 2 are buckled, and the slip form core 3 is connected with the static mold core 1 and the movable mold core 2 in a sliding mode. The static mould parting cavity 14 and the static mould curved surface 13 are arranged on the mould joint surface of the static mould core 1, the movable mould parting cavity 24 and the movable mould curved surface 23 are arranged on the mould joint surface of the movable mould core 2, and the sliding mould cavity 34 is arranged on the sliding mould core 3. After the static mold core 1, the movable mold core 2 and the sliding mold core 3 are assembled in the mold, the sliding mold core 3 is positioned in a curved surface cavity defined by the static mold curved surface 13 and the movable mold curved surface 23; the molding cavity 4 is formed by assembling the static mold split cavity 14, the movable mold split cavity 24 and the sliding mold cavity 34. The static mold core is provided with a static mold slag hole 12 and a static mold slag discharging exhaust passage 121, and the static mold slag hole 12 is communicated with the tail end of the static mold cavity 14. The movable mold core 2 is provided with a movable mold slag hole 22 and a movable mold slag discharge exhaust passage 221, and the movable mold slag hole 22 is communicated with the tail end of the movable mold sub-cavity 24. The die surface of the movable die core 2 is also provided with a secondary slag hole 25 and an external channel 251, the secondary slag hole 25 is respectively communicated with the movable die deslagging exhaust passage 221 and the external channel 251, the external channel 251 is an open type open channel, and the external port of the external channel is positioned at the edge of the die core. After the static mold core, the movable mold core and the sliding mold core are closed, the static mold deslagging exhaust passage 121 and the movable mold deslagging exhaust passage 221 are correspondingly matched and communicated with each other.

Referring to fig. 2 to 7, the sliding mold core 3 is in the shape of an oblate column, the orthographic projection of the end surface 31 is in the shape of an ellipse, and a blind hole-shaped sliding mold cavity 34 is arranged at one end of the sliding mold core 3 connected with the static mold core and the movable mold core. The static mold core 1 and the movable mold core 2 are respectively provided with a curved surface matched with the slip form core 3, and the slip form core 3 is positioned in a curved surface cavity formed by the static mold curved surface 13 and the movable mold curved surface 23 and is closely connected with the curved surface cavity in a sliding way.

Referring to fig. 4 to 7, the static mold slag hole 12 and the static mold slag discharge passage 121 are formed on the static mold curved surface 13, three static mold slag holes 12 are formed on the static mold curved surface 13, and the slag discharge passage of the middle slag hole is communicated with the slag discharge passage of one slag hole on the side surface thereof. Two movable mold slag holes 22 distributed on the left and the right are arranged on the movable mold curved surface 23, and each movable mold slag hole 22 is provided with a movable mold slag discharging exhaust passage 221 extending towards the two sides. Two secondary slag holes 25 are respectively arranged on the die core connecting surfaces at two sides of the curved surface 23 of the movable die, and an external connection channel 251 and an internal connection channel 252 which are communicated with the two secondary slag holes 25 are respectively arranged at two sides of each secondary slag hole 25. The inner and outer channels are in groove shape on the contact surface of the movable mould core, the inner channel 252 is communicated with the movable mould deslagging exhaust passage 221, the outer groove opening of the outer channel 251 is positioned at the outer edge of the movable mould core 2, and the outer channel 251 is communicated with the air outside the mould core. After the static mold core and the movable mold core are closed, the static mold slag hole 12 and the movable mold slag hole 22 are communicated with the second-level slag hole 25 through the slag discharge exhaust channel connected with the static mold core and the movable mold core.

Referring to fig. 1, 4 and 8, in use, the mold core of the present invention is installed on the mold frame, wherein the stationary mold core 1 is installed on the stationary mold frame 9, the movable mold core 2 is installed on the movable mold frame 5, and the sliding mold core 3 is connected to the connecting block 6; the static die set frame 9 is provided with a die-casting sprue bush 8, the static die core 1 is provided with a runner 11 communicated with the sprue bush 8 and the forming cavity 4, and the connecting block 6 is connected with the hydraulic cylinder 7. During die casting, a die-casting material enters the die diversion cavity through the sprue of the sprue bush 8 under the injection of the die-casting machine and then enters the molding cavity 4 through the sprue runner 11. In the process of die casting, redundant materials, material slag and air in the forming cavity 4 of the casting are sequentially discharged outwards through a static slag hole, a static slag discharging exhaust channel, an internal connecting channel, a secondary slag hole and an external connecting channel under pressure. And (3) demolding after the die casting is cooled, lifting the slip form core 3 under the traction of a hydraulic cylinder 7 to separate from the blank, separating the movable die core 2 and the casting blank from the static die core 1 under the action of the movable die assembly frame 5, and finally ejecting the blank by an ejector device on the movable die assembly frame 5. The secondary slag hole is arranged, so that complete exhaust and slag discharge can be ensured, a certain pressure in the molding cavity 4 during die casting can be maintained, and the die casting quality is ensured.

Claims

1. A die-casting die core comprises a static die core (1), a movable die core (2) and a slip form core (3) which are combined and connected; a static mold cavity (14) and a movable mold cavity (24) are respectively arranged on the joint surface of the static mold core (1) and the movable mold core (2), a sliding mold cavity (34) is arranged on the sliding mold core (3), and the static mold cavity (14), the movable mold cavity (24) and the sliding mold cavity (34) are assembled together to form a molding cavity (4); the movable mold core (2) is provided with a movable mold slag hole (22) and a movable mold slag discharging exhaust passage (221) which are communicated with a movable mold sub-cavity (24), and is characterized in that the movable mold core (2) is provided with a second-stage slag hole (25) and an external channel (251), the second-stage slag hole (25) is communicated with the movable mold slag discharging exhaust passage (221) and the external channel (251), and the external channel (251) is an open type open channel; after the static mold core (1) and the movable mold core (2) are closed, the static mold deslagging exhaust passage (121) is communicated with the movable mold deslagging exhaust passage (221) in a matching way.

2. The die-casting die core according to claim 1, characterized in that the end surface of the sliding die core (3) is elliptical, the stationary die core (1) and the movable die core (2) are respectively provided with a curved surface matched with the sliding die core (3), and the sliding die core (3) is positioned in a curved surface cavity formed by the two curved surfaces and is closely connected with the curved surface cavity in a sliding manner.

3. The die-casting die core according to claim 2, wherein the static die slag cavity (12) and the static die slag discharging exhaust passage (121) are arranged on the static die curved surface (13), the movable die slag cavity (22) and the movable die slag discharging exhaust passage (221) are arranged on the movable die curved surface (23), and the secondary slag cavity (25) and the external connecting channel (251) are arranged on the buckling surface of the movable die core (2).

4. A die-casting die core according to claim 3, characterized in that one side of the secondary slag cavity (25) is further provided with an internal channel (252) communicated with the slag discharge exhaust passage (221) of the movable die, the secondary slag cavity (25) and the internal and external channels thereof are arranged on the die core buckling surface on both sides of the curved surface (23) of the movable die, the internal and external channels are grooves arranged on the buckling surface of the movable die core, and the external groove opening of the external channel (251) is positioned on the outer edge of the movable die core (2).

5. The die-casting die core according to claim 3, characterized in that the static die core (1) is provided with three static die slag holes (12), the movable die core (2) is provided with two movable die slag holes (22), and after the static die core and the movable die core are closed, the static die slag holes (12) and the movable die slag holes (22) are communicated with the secondary slag holes (25) through slag discharge exhaust passages.