CN217941790U

CN217941790U - Mold development device

Info

Publication number: CN217941790U
Application number: CN202221111880.6U
Authority: CN
Inventors: 陈明德; 赵易祥; 赵国明; 赵易平
Original assignee: Dongguan Hongkai Hardware Products Co ltd
Current assignee: Dongguan Hongkai Hardware Products Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-12-02
Anticipated expiration: 2032-05-09

Abstract

The utility model describes a mould development device, it includes: the sand core die comprises a left die and a right die, wherein a first groove for molding the sand core piece is correspondingly formed in the first surface of the left die and the first surface of the right die; the gravity die comprises an upper die and a lower die, wherein a second groove for forming a die-pressed part is correspondingly formed in the first surface of the upper die and the first surface of the lower die, an oil cylinder and a slide part communicated with the oil cylinder are arranged on the third side of the lower die, a hollow runner is arranged on the fourth side of the third side of the upper die and the lower die and communicated with the second groove, a plurality of risers with protruding structures are further arranged on the first surface of the lower die, a heat insulation layer is arranged on the surfaces of the risers, an interlayer is formed between the heat insulation layer and the risers and communicated with the runner, a first limiting part and a second limiting part which enable the sand core part to be placed in the second groove in a suspended mode are formed at two ends of the sand core part, and the volume of the second groove is larger than that of the first groove. In this case, the feeder head can solve the problems of uneven wall thickness and looseness of the finally formed mold.

Description

Mold development device

Technical Field

The present invention generally relates to a mold development apparatus.

Background

The aluminum alloy gravity casting has low melting point and good casting performance, and is widely applied to a plurality of fields of automobiles, motorcycles, motors, communication, hardware tools and the like.

When the current gravity casting mold works, high-temperature casting liquid enters a mold cavity through a pouring gate system and is cooled and molded, but when casting is carried out, the casting liquid enters the mold cavity and is too fast to generate bubbles easily, and the bubbles in the mold cavity cannot be discharged in time, so that the local shrinkage phenomenon of a casting blank easily occurs, and the problem that the wall thickness of the finally formed mold is uneven and loose is caused.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned existing situation, an object of the present invention is to provide a mold development device capable of solving the problems of uneven wall thickness and loosening of the mold in the final formation.

Therefore, the utility model provides a mould development device, it includes: the sand core die comprises a left die and a right die, wherein a first groove for molding the sand core piece is correspondingly formed in the first surface of the left die and the first surface of the right die; the gravity die comprises an upper die and a lower die, wherein a second groove for forming a die-pressed part is correspondingly formed in the first surface of the upper die and the first surface of the lower die, an oil cylinder and a slide part communicated with the oil cylinder are arranged on the third side of the lower die, a hollow runner is arranged on the third side of the upper die and the fourth side of the lower die and communicated with the second groove, a plurality of risers in a protruding structure are further arranged on the first surface of the lower die, a heat insulation layer is arranged on the surfaces of the risers, an interlayer is formed between the heat insulation layer and the risers and communicated with the runner, a first limiting part and a second limiting part which enable the sand core pieces to be placed in the second groove in a hanging mode are formed at the two ends of the sand core pieces, and the volume of the second groove is larger than that of the first groove.

The utility model discloses in, through the first surface of lower mould is provided with a plurality of rising heads that are protruding structure the rising head surface is provided with the heat preservation, consequently can make the casting liquid advance through the runner pouring the heat preservation with form the intermediate layer between the rising head, because the existence of heat preservation, can make the casting liquid aftercooling in the intermediate layer moreover, aftercooling's casting liquid can in time flow through and mend breach or wall thickness that the scarce mould exists, can solve the mould wall thickness inequality that finally forms, the loose problem of mould.

Additionally, in the utility model relates to a mold development device, optionally, the first surface of left side mould with the first surface of right side mould corresponds sets up the loose piece recess that makes the psammitolite break away from. Therefore, the sand core piece can be conveniently separated from the sand core mould.

Further, in the mold development device according to the present invention, optionally, the second surface of the upper mold is provided with a pair of upper mold legs, and the second surface of the lower mold is provided with a pair of lower mold legs. From this, can conveniently support gravity mould.

Additionally, the utility model relates to an in the mould development device, optionally, the gravity die still is provided with the thimble board, be provided with on the thimble board and run through go up the mould with a plurality of thimbles of lower mould. Therefore, the mould pressing piece can be conveniently taken out under the action of the ejector plate and the ejector pins.

Drawings

Embodiments of the invention will now be explained in further detail by way of example only with reference to the accompanying drawings, in which:

fig. 1 is a schematic view showing a structure of a sand core mold in a mold development apparatus according to the present invention.

Fig. 2 is a schematic structural view showing a gravity die in the die developing apparatus according to the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same components are denoted by the same reference numerals, and redundant description thereof is omitted. The drawings are schematic and the ratio of the dimensions of the components and the shapes of the components may be different from the actual ones.

Fig. 1 is a schematic view showing a structure of a sand core mold 1 in a mold developing device according to the present invention. Fig. 2 is a schematic structural view showing a gravity die 2 in the die developing apparatus according to the present invention.

The utility model provides a mould development device can include sand mandrel 1 and gravity mould 2, and sand mandrel 1 can use the sandy material to make out sand chipware 3 as the owner when the moulding-die, then places sand chipware 3 and pours out mould pressing piece 4 with liquid such as pouring aluminium in the gravity mould 2 again, takes out the sand chipware 3 of sandy with finally making hollow mould pressing piece 4.

Specifically, in the present embodiment, the sand core mold 1 may include a left mold 11 and a right mold 12. The first surface 111 of the left mould 11 and the first surface 121 of the right mould 12 are correspondingly provided with first recesses 13 for shaping the core element 3, i.e. the core element 3 is formed by sand injection in the core mould 1.

The gravity die 2 may include an upper die 21 and a lower die 22. The first surface 211 of the upper mold 21 and the first surface 221 of the lower mold 22 may be correspondingly formed with second grooves 23 for molding the mold element 4, and the third side 223 of the lower mold 22 may be provided with an oil cylinder 224 and a slide 225 communicating with the oil cylinder 224. The third side surface 213 of the upper mold 21 and the fourth side surface 226 of the lower mold 22 may be provided with a hollow flow passage 227, and the flow passage 227 may communicate with the second groove 23. A plurality of risers 228 having a convex structure may be further disposed on the first surface 221 of the lower mold 22, and an insulating layer may be disposed on the surface of the risers 228, and an interlayer may be formed between the insulating layer and the risers 228, and the interlayer is in communication with the flow channel 227. A first stopper 31 and a second stopper 32 for suspending the sand core 3 in the second groove 23 may be formed at both ends of the sand core 3, and the volume of the second groove 23 may be larger than the volume of the first groove 13.

In the present embodiment, the shape of the second groove 23 may be substantially the same as the shape of the first groove 13.

In the present embodiment, the oil in the oil cylinder may enter the second groove 23 through the traveling member 225, and the oil may help the molding member 4 to escape from the second groove 23.

The utility model discloses in, be provided with a plurality of rising heads 228 that are protruding structure through first surface 221 at lower mould 22, be provided with the heat preservation on rising head 228 surface, consequently can make the pouring fluid pour into the intermediate layer that forms between heat preservation and the rising head through runner 227 pouring, and because the existence of heat preservation, can make the pouring fluid aftercooling in the intermediate layer, aftercooling's pouring fluid can in time flow through and mend breach or wall thickness that the scarce mould exists, can solve the mould wall thickness inequality that finally forms, the loose problem of mould.

In the present embodiment, the number of the dead heads 228 is not limited, and may be 1, 2, 3, 4, 5, 6, 7, 8, etc., and the dead heads 228 may be uniformly arranged around the second groove 23. Thereby, the casting liquid in the sandwich layer can be sufficiently poured into the molding member 4.

In this embodiment, the first surface 111 of the left mold 11 and the first surface 121 of the right mold 12 may be correspondingly provided with a loose piece groove 131 for separating the sand core 3, and correspondingly, the loose piece 33 may be preferentially placed in the loose piece groove 131. This makes it possible to easily separate the sand core member 3 from the sand core mold 1 via the loose piece 33.

In some examples, the material of the loose piece 33 may be different from the material of the sand core 3, i.e., the material of the loose piece 33 may not be sandy.

In this embodiment, the second surface 212 of the upper mold may be provided with a pair of upper mold legs 214 and the second surface 222 of the lower mold 22 may be provided with a pair of lower mold legs 229. Therefore, the gravity die 2 can be conveniently supported.

In the present embodiment, the gravity die 2 may further include an ejector plate 24, and the ejector plate 24 may include a plurality of ejector pins 241 penetrating the upper die 21 and the lower die 22. Thereby, the molded component 4 can be taken out easily by the action of the ejector plate 24 and the ejector 241.

In some examples, the ejector plate 24 may be disposed below the lower die 22.

The utility model discloses die development device's theory of operation: the sand core member 3 is formed by injecting sand into the sand core mold 1, then the sand core member 3 is placed into the gravity mold 2, the sand core member 3 is wrapped by pouring liquid such as aluminum again into the gravity mold 2, and the pouring liquid flows into the interlayer formed by the riser 228 and the insulating layer at the same time. And due to the function of the heat-insulating layer, the pouring liquid around the sand core piece 3 can be cooled firstly, the pouring liquid in the interlayer can be cooled afterwards, the cooled pouring liquid can continuously flow into the positions such as the notches which are not poured around the sand core piece 3, and finally the mould pressing piece 4 is taken out through the thimble 241, and the sand core piece 3 is led out, so that the mould pressing piece 4 with uniform wall thickness and dense texture is formed finally.

The utility model discloses in, be provided with a plurality of rising heads 228 that are protruding structure through first surface 221 at lower mould 22, be provided with the heat preservation on rising head 228 surface, consequently can make the pouring fluid pour into through runner 227 pouring and form the intermediate layer between heat preservation and the rising head, and because the existence of heat preservation, can make the pouring fluid aftercooling in the intermediate layer, aftercooling's pouring fluid can in time flow through and mend breach or wall thickness that the scarce mould exists, can solve the mould wall thickness inequality that finally forms, the loose problem of mould.

While the present invention has been described in detail in connection with the drawings and the examples, it is to be understood that the above description is not intended to limit the present invention in any way. The present invention may be modified and varied as necessary by those skilled in the art without departing from the true spirit and scope of the invention, and all such modifications and variations are intended to be included within the scope of the invention.

Claims

1. A mold developing device is characterized in that,

the method comprises the following steps:

the sand core mould (1) comprises a left mould (11) and a right mould (12), wherein a first groove (13) for forming the sand core piece (3) is correspondingly formed in a first surface (111) of the left mould (11) and a first surface (121) of the right mould (12); and

the gravity die (2) comprises an upper die (21) and a lower die (22), wherein a second groove (23) for forming a die pressing piece (4) is correspondingly formed in a first surface (211) of the upper die (21) and a first surface (221) of the lower die (22), an oil cylinder (224) and a slide piece (225) communicated with the oil cylinder are arranged on a third side (223) of the lower die (22), a hollow runner (227) is arranged on a third side (213) of the upper die (21) and a fourth side (226) of the lower die (22), the runner (227) is communicated with the second groove (23), a plurality of risers (228) in a protruding structure are further arranged on the first surface (221) of the lower die (22), an insulating layer is arranged on the surface of each riser (228), an interlayer is formed between the insulating layer and each riser (228), and is communicated with the runner (227),

wherein, a first limiting part (31) and a second limiting part (32) which enable the sand core member (3) to be placed in the second groove (23) in a suspended mode are formed at two ends of the sand core member (3), and the volume of the second groove (23) is larger than that of the first groove (13).

2. The mold development apparatus of claim 1,

and the first surface (111) of the left die (11) and the first surface (121) of the right die (12) are correspondingly provided with loose piece grooves (131) for separating the sand core piece (3).

3. The mold development apparatus of claim 1,

the second surface (212) of the upper die is provided with a pair of upper die feet (214), and the second surface (222) of the lower die is provided with a pair of lower die feet (229).

4. The mold development apparatus of claim 1,

the gravity die (2) is further provided with an ejector plate (24), and a plurality of ejector pins (241) penetrating through the upper die (21) and the lower die (22) are arranged on the ejector plate (24).