CN219817972U - Die frame and die casting die - Google Patents

Abstract

The utility model discloses a die frame and a die casting die, wherein the die frame comprises a die frame body, and at least one first ejector rod hole for ejecting a formed product by an ejector pin is formed in the die frame body, and the die frame is characterized in that: each first ejector rod hole is communicated with each other through a fluid channel, and the fluid channel is connected with a pump part to pump out gas and/or liquid in the fluid channel; a die casting die, includes the mold core, the mold core has the die cavity that makes the shaping article shaping, its characterized in that: the mold core is accommodated in the mold frame body, and correspondingly, at least one second ejector rod hole communicated with the first ejector rod hole is formed in the mold core. The utility model can ensure that the casting process is always in a dry environment, reduce the defect proportion of the die casting caused by water vapor and improve the yield of the casting.

Description

Die frame and die casting die

Technical Field

The utility model belongs to the technical field of die casting dies, and particularly relates to a die casting die capable of keeping dry better.

Background

In general, a mold for molding is required to be opened after a molding step and a cooling step, and finally, the ejector pin and the molded article are ejected in the direction of demolding. In this case, if spraying of the spraying liquid is performed when a batch of castings is produced at the end of the previous casting operation, see, in particular, chinese patent application No. 202123047609.9 (grant publication No. CN216607183U for a spraying structure in a die-casting mold slide), various slide mechanisms are often provided on the die-casting mold in order to ensure that the castings can be smoothly taken out from the mold after the die-casting is completed, the core slide needs to be sprayed with a coating agent, and then the ejector pins are penetrated through the ejector pin holes of the mold and perform the ejection action, so that the castings are smoothly demolded. The spraying liquid is directly sprayed on the surface of the die by a mechanical arm, and flows downwards along the ejector rod hole in the process, part of the spraying liquid possibly remains in the gap between the die core and the die frame, and defective castings are easily produced, so that the quality of finished products of the castings is finally affected.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide a die frame capable of better extracting spraying liquid in a mandril hole aiming at the state of the art.

The second technical problem to be solved by the present utility model is to provide a die casting mold capable of better keeping dry.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the die frame comprises a die frame body, wherein at least one first ejector rod hole for ejecting a formed product by an ejector pin is formed in the die frame body, and the die frame is characterized in that: each first ejector rod hole is communicated with each other through a fluid channel, and the fluid channel is connected with a pump part to pump out gas and/or liquid in the fluid channel.

In order to make the same mold frame suitable for different mold cores, such as a mold core a, a mold core B or a mold core C, and the like, because the mold cavities of the different mold cores are correspondingly different, the first ejector rod holes of the same mold frame need to be distributed widely, preferably, the fluid channel comprises a communication loop at the center and at least two branch flow paths, and each branch flow path respectively communicates the corresponding first ejector rod hole positioned in and/or outside the communication loop into the communication loop. The first ejector pin holes with different distributions are communicated through respective branch flow paths by means of a common communication loop, and the dryness in each first ejector pin hole is kept when the gas and/or liquid in the fluid channel is pumped out by the pump part, so that different mold cores are adapted.

In order to connect the pump part to the mold frame body more conveniently, it is preferable that the mold frame body is provided with a communication hole communicating with the fluid passage, and the pump part is located outside the mold frame body and connected with the communication hole through a pipe.

In order to facilitate the arrangement of the communication hole, preferably, the periphery of the mold frame body is provided with a convex wall surrounding to form a cavity, and the communication hole is arranged on the convex wall.

In order to solve the second technical problem, the utility model provides a die casting die, which comprises a die core, wherein the die core is provided with a cavity for molding a molded product, and the die casting die is characterized in that: the mold core is accommodated in the accommodating cavity of the mold frame body, and correspondingly, at least one second ejector rod hole communicated with the first ejector rod hole is formed in the mold core.

In order to facilitate better cooling of the mold core, preferably, the mold core is provided with at least two cooling holes with closed bottoms, correspondingly, the mold frame body is provided with cooling channels communicated with the cooling holes corresponding to the mold frame body, and the cooling channels are internally provided with spot cooling structures.

Further, the spot cooling structure includes an inner pipe through which cooling water flows out and an outer pipe forming an inter-pipe flow path with the inner pipe, and the cooling water flows out from the inter-pipe flow path in a state where the cooling water flows into the cooling hole and collides with the bottom surface thereof to change the flow direction. The spot cooling structure ensures the cyclic utilization of the cooling water and simultaneously avoids the cooling water from remaining in the cooling holes.

Compared with the prior art, the utility model has the advantages that: because the mould for forming is provided with the mould core and the mould frame which are arranged in a split mode, the fluid channels which are communicated with the first ejector rod holes corresponding to the second ejector rod holes in the different mould cores and the pump part are arranged in the mould frame, and liquid such as spraying liquid and/or gas in the second ejector rod holes in the different mould cores can be pumped out, so that the mould core is always in a dry environment in the casting process, the defect proportion of die castings caused by water vapor is reduced, the yield of the castings is improved, and the universality is high.

Drawings

FIG. 1 is a schematic diagram of a frame embodiment in an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a die casting mold (a mold core is accommodated in a mold frame) according to an embodiment of the present utility model;

fig. 3 is a schematic cross-sectional view of fig. 2.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1-3, is a preferred embodiment of the present utility model. The mold frame in this embodiment includes a mold frame body 1, and at least one first ejector pin hole 11 for ejecting the ejector pin out of the molded product is provided on the mold frame body 1. The respective first jack holes 11 are communicated with each other through a fluid passage 12, and the fluid passage 12 is connected with a pump portion 3 such as a negative pressure pump to pump out gas and/or liquid in the fluid passage 12. Because the mold core 2 and the mold frame of the mold for molding are arranged in a split mode, the fluid channels 12 which are communicated with the first ejector rod holes 11 corresponding to the second ejector rod holes 21 in different mold cores 2 and the pump part 3 are arranged in the mold frame only, and liquid such as spraying liquid and/or gas in the second ejector rod holes 21 in different mold cores can be pumped out, so that the mold core 2 is always in a dry environment in the casting process, the defect proportion of the die casting caused by water vapor is reduced, the yield of the casting is improved, and the universality is strong.

Specifically, the fluid channel 12 of the present embodiment includes a communication loop 121 located in the center and at least two branch flow paths 122, and each branch flow path 122 communicates the first jack hole 11 located in and/or outside the communication loop 121 corresponding to itself into the communication loop 121. The communication loop 121 is arranged to be shared and each first ejector pin hole 11 is arranged in the inner or outer part of the communication loop 121, so that the same die frame can be suitable for different die cores, such as an a die core, a B die core or a C die core, and the cavities of the different die cores are correspondingly different, so that the first ejector pin holes of the same die frame need to be distributed wider, for example, the a die core needs to have 7 first ejector pin holes, the B die core needs to have 9 first ejector pin holes, or the C die core needs to have 10 first ejector pin holes, and then the die frame body 1 can be provided with more first ejector pin holes 11 distributed in a larger number and more than 7, 9 or 10, so that the dryness in each first ejector pin hole 11 can be kept when the pump parts pump out gas and/or liquid in the fluid channel together, so as to be suitable for different die cores 2.

In order to connect the pump part 3 to the mold frame body 1 more conveniently, in this embodiment, the periphery of the mold frame body 1 is provided with a convex wall surrounding to form a cavity, a communication hole 13 communicating with the fluid channel 12 is formed in the convex wall, the pump part 3 is located outside the mold frame body 1 and is connected with the communication hole 13 through a pipeline, besides, an adjusting mechanism 14 capable of adjusting the size of the communication hole 13 is further arranged at the communication hole 13 of the outer side wall of the mold frame body 1, and when only one communication hole 13 needs to be pumped, the other communication hole 13 can be completely closed through the adjusting mechanism 14.

In addition, the embodiment also provides a die casting die. As shown in fig. 2, the die casting mold comprises a mold core 2, the mold core 2 is provided with a cavity for molding a molded product, the mold core 2 is accommodated in the accommodating cavity of the mold frame body 1, correspondingly, the mold core 2 is provided with at least one second ejector pin hole 21 communicated with the first ejector pin hole 11 so as to jointly form an ejector pin hole for ejecting the ejector pin, wherein, in order to facilitate better cooling of the mold core, the mold core 2 is provided with at least two cooling holes 22 with closed bottoms, correspondingly, the mold frame body 1 is provided with cooling channels 15 communicated with the corresponding cooling holes 22, the cooling channels 15 are internally provided with a point cooling structure 4, the point cooling structure 4 comprises an inner pipe 41 for flowing out cooling water and an outer pipe 42 forming an inter-pipe flow path between the inner pipe 41, the cooling water flows into the cooling holes 22 with the closed bottoms from the inner pipe 41 of the cooling water pipe 4 shown in fig. 3, collides with the bottom surface so as to change the flow direction, and then flows out from the inter-pipe flow path through the inter-pipe flow path existing on the outer circumference side of the inner pipe 41. Since the flow passage area of the passage in the cooling hole 22 is larger than that of the inner tube 41, the flow direction of the cooling water discharged from the inner tube 41 and having the bottom surface of its outflow resistance (drainage resistance) does not change much. Further, since the flow area of the passage in the cooling hole 22 is about 1.5 to 2 times the flow area of the inner tube 41, the flow rate of the cooling water passing through the passage in the cooling hole 22 is not excessively reduced. This ensures both the recycling of the cooling water and at the same time avoids that the cooling water remains in the cooling holes 22 and eventually flows out of the cooling holes 22.

Claims (7)

1. The utility model provides a mould frame, including mould frame body (1), offer at least one first ejector pin hole (11) that supplies the ejecting shaping of thimble on mould frame body (1), its characterized in that: each first ejector rod hole (11) is communicated with each other through a fluid channel (12), and the fluid channel (12) is connected with a pump part (3) to pump out gas and/or liquid in the fluid channel (12).

2. The mold frame according to claim 1, wherein: the fluid channel (12) comprises a communication loop (121) positioned in the center and at least two branch flow paths (122), and each branch flow path (122) is used for respectively communicating the corresponding first ejector rod hole (11) positioned in and/or outside the communication loop (121) into the communication loop (121).

3. A mold frame as claimed in claim 2, wherein: the die frame body (1) is provided with a communication hole (13) communicated with the fluid channel (12), and the pump part (3) is positioned outside the die frame body (1) and is connected with the communication hole (13) through a pipeline.

4. A mold frame as claimed in claim 3, wherein: the periphery of the die frame body (1) is provided with a convex wall for surrounding to form a containing cavity, and the communication hole (13) is arranged on the convex wall.

5. The die casting die comprises a die core (2), wherein the die core (2) is provided with a cavity for molding a molded product, and the die casting die is characterized in that: the mold core (2) is accommodated in the accommodating cavity of the mold frame body (1) according to any one of claims 1 to 4, and correspondingly, at least one second ejector rod hole (21) communicated with the first ejector rod hole (11) is formed in the mold core (2).

6. The die casting die according to claim 5, wherein: at least two cooling holes (22) with closed bottoms are formed in the mold core (2), correspondingly, cooling channels (15) communicated with the cooling holes (22) corresponding to the mold frame body (1) are formed in the mold frame body (1), and a spot cooling structure (4) is arranged in the cooling channels (15).

7. The die casting die according to claim 6, wherein: the spot cooling structure (4) includes an inner pipe (41) through which cooling water flows out and an outer pipe (42) forming an inter-pipe flow path with the inner pipe (41), and the cooling water flows out from the inter-pipe flow path in a state in which the cooling water flows into the cooling hole (22) and collides with the bottom surface thereof to change the flow direction.