CN210907967U

CN210907967U - Sand core forming die for automobile tail end transmission shell

Info

Publication number: CN210907967U
Application number: CN201921971429.XU
Authority: CN
Inventors: 励建永
Original assignee: Ningbo Zhongfa Machinery Die Co ltd
Current assignee: Ningbo Duocheng Machinery Casting Co.,Ltd.
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-07-03
Anticipated expiration: 2029-11-14

Abstract

The utility model provides a sand core forming die of an automobile end transmission shell, which comprises an upper die, a lower die and an ejection mechanism, a cavity is formed between the upper die and the lower die, a pouring plate and an air blowing plate are sequentially arranged above the upper die, a plurality of pouring channels are arranged on the pouring plate, each pouring channel is respectively communicated with the cavity from the surface of the pouring plate, the upper die is provided with a plurality of through holes which respectively penetrate through the upper die and are communicated with the die cavity, the blowing plate is provided with a plurality of blowing openings and a plurality of blowing pipelines, the blowing openings are distributed on the blowing plate at intervals, one end of each blowing pipeline is connected with the blowing openings, the other end of each blowing pipeline is respectively inserted into the through holes and communicated with the cavity, its overall structure is simple, and design benefit can also improve the cooling efficiency in the later stage cooling process of blowing when realizing carrying out quick carminative to the die cavity.

Description

Sand core forming die for automobile tail end transmission shell

Technical Field

The utility model belongs to the technical field of the psammitolite mould technique and specifically relates to an automobile end drive casing psammitolite moulded die.

Background

As is well known, a casting mold is a production process commonly adopted in the mold industry, and at present, a cold box manufacturing method is also a commonly used sand core mold production method, in the cold box manufacturing method, casting liquid in a sand core mold cavity is generally cooled by an air blowing method, in the prior art, an exhaust system and an air blowing system in the mold are separately arranged, so that the whole mold is relatively complicated in the design process, in addition, the exhaust system needs to be sealed in the process of cooling and blowing the casting liquid in the mold cavity, so that the cooling and air blowing process in the whole cold box manufacturing method is relatively complicated and low in cooling efficiency, and is not suitable for industrial production application.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a car end drive casing psammitolite moulded die, its difference of overcoming prior art, its simple structure, design benefit through with exhaust passage and the pipeline integrated design that blows, can simplify the structure of whole mould effectively.

Another object of the utility model is to provide a car end drive casing psammitolite moulded die, it realizes the sealed to exhaust passage through removing the pipeline of blowing in the cooling process of blowing to make its overall design ingenious, and can simplify the sealing process to exhaust passage in the cooling process effectively, improved holistic practicality.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a sand core forming die for a transmission shell at the tail end of an automobile comprises an upper die, a lower die and an ejection mechanism, wherein the upper die is arranged above the lower die, the ejection mechanism is arranged below the lower die, a cavity is formed between the upper die and the lower die, a pouring plate and an air blowing plate are sequentially arranged above the upper die, the pouring plate is arranged above the upper die, the air blowing plate is arranged above the pouring plate, a plurality of pouring channels are arranged on the pouring plate, the pouring channels respectively penetrate through the surface of the pouring plate and are communicated with the cavity, a plurality of through holes are formed in the upper die, the through holes respectively penetrate through the upper die and are communicated with the cavity, a plurality of air blowing openings and a plurality of air blowing pipelines are arranged on the air blowing plate, the air blowing openings are distributed on the air blowing plate at intervals, one end of each air blowing pipeline is connected with the air blowing opening, the other ends of the two connecting rods are respectively inserted into the through holes and communicated with the die cavity.

According to the utility model discloses an embodiment, the diameter of gas blow pipeline is less than the diameter of through-hole, gas blow pipeline with can form exhaust passage between the through-hole.

According to the utility model discloses an embodiment, the upper end of through-hole is equipped with the opening of loudspeaker form, the gas blow pipeline with the butt department of through-hole be equipped with opening assorted lug, the lug is aimed at the opening.

According to the utility model discloses an embodiment, be equipped with first butt piece on the gas blow pipeline, first butt piece set up in the top of lug, go up on the mould inwards cave in from its surface and form integrally with first butt piece assorted first recess, first butt piece is aimed at first recess.

According to the utility model discloses an embodiment, the surface cover of pipeline of blowing is equipped with first spring, the one end rigid coupling of first spring in the board of blowing, the other end rigid coupling in the pouring board.

According to the utility model discloses an embodiment, the pouring board with be equipped with a plurality of second springs between the blowing board, it is a plurality of the second spring divide to locate blowing board is all around, second spring one end rigid coupling in blowing board, other end rigid coupling in the pouring board, each the inboard of second spring all is equipped with the dead lever, the dead lever rigid coupling in on the blowing board, the length of dead lever weak point in the length of second spring.

According to the utility model discloses an embodiment, be equipped with a plurality of ejector pins on the ejection mechanism, each the one end of ejector pin install in on the ejection mechanism, the other end runs through the lower mould.

The utility model has the advantages that: by adopting the technical scheme, the utility model has simple integral structure and ingenious design, and can rapidly realize the operation of introducing cooling gas into the cavity by arranging the through hole and the blowing pipeline; the diameter of the air blowing pipeline is smaller than the size of the through hole, so that an air exhaust channel is formed between the air blowing pipeline and the through hole, and the design of the whole mold is effectively simplified; the gas-blowing cooling device is provided with a convex block, a first abutting block and a first spring, wherein the first spring can drive a gas-blowing pipeline to move under the action of external pressure, so that the gas-blowing pipeline can be moved to open and close an exhaust channel, and therefore, the problem that the surface of a produced product is not smooth enough due to more gas in the cavity can be effectively solved;

drawings

Fig. 1 is a perspective view schematically illustrating a preferred embodiment of the present invention.

Fig. 2 is a top view of a preferred embodiment according to the present invention.

Figure 3 is a cross-sectional view taken along a-a of figure 2 according to the present invention.

Fig. 4 is an enlarged schematic view of fig. 3 at B according to the present invention.

Fig. 5 is an exploded schematic view of a preferred embodiment according to the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

As shown in fig. 1 to 5, an automobile end drive shell sand core forming die 1 comprises an upper die 10, a lower die 20 and an ejection mechanism 40, wherein the upper die 10 is arranged above the lower die 20, the upper die 10 and the lower die 20 are matched with each other, the ejection mechanism 40 is arranged below the lower die 20, a cavity 30 is formed between the upper die 10 and the lower die 20, after the sand core in the cavity 30 is formed, the upper die 10 is opened, and the ejection mechanism 40 is used for ejecting the sand core in the cavity 30, so that the sand core die can be rapidly taken out; a pouring plate 50 and an air blowing plate 60 are sequentially arranged above the upper die 10, the pouring plate 50 is arranged above the upper die 10, the air blowing plate 60 is arranged above the pouring plate 50, a plurality of pouring channels 51 are arranged on the pouring plate 50, each pouring channel 51 is respectively communicated with the cavity 30 through the surface of the pouring plate 50, when pouring is carried out, pouring liquid is injected into the cavity 30 through the plurality of pouring channels 51, so that the pouring liquid can be molded in the cavity 30, air in the cavity 30 can be discharged through the air discharging channel 63 while the pouring liquid flows in, the operation of discharging the air in the cavity 30 during pouring can be effectively realized, and the problems that bubbles easily occur on the outer surface of a produced product due to the fact that the air in the cavity 30 cannot be discharged in the prior art can be effectively avoided, thereby effectively improving the yield of products in the production process; the upper die 10 is provided with a plurality of through holes 11, the through holes 11 respectively penetrate through the upper die 10 and are communicated with the cavity 30, the blowing plate 60 is provided with a plurality of blowing ports 61 and a plurality of blowing pipelines 62, the blowing ports 61 are distributed on the blowing plate 60 at intervals, one end of each blowing pipeline 62 is connected with the blowing ports 61, the other end of each blowing pipeline 62 is respectively inserted into the through holes 11 and is communicated with the cavity 30, when the casting liquid in the cavity 30 is blown and cooled, only the casting liquid inlet needs to be closed, then the gas is blown into the cavity 30 through the blowing ports 61 and the blowing pipelines 62, the gas is blown into the cavity 30 through the blowing pipelines 62, the blowing plate 60 is forced to move the casting plate 50 under the action of pressure, at the moment, the blowing pipelines 62 are moved towards the cavity 30, and the bumps 621 on the blowing pipelines 62 block the openings 111 of the through holes 11 (namely, the blowing is performed by blowing The convex block 621 on the pipe 62 blocks the exhaust channel 63 outside the pipe) so that the blown gas does not escape from the exhaust channel 63, thereby the blown gas can be gathered in the cavity 30, thereby improving the cooling effect of the blown gas, and in addition, the device arranges the exhaust channel 63 and the blowing pipe 62 together, and the exhaust channel 63 is blocked by the pressure generated by the blowing pipe 62 during blowing, thereby not only effectively realizing the quick exhaust of the whole device, but also quickly realizing the operation of effectively sealing the exhaust channel 63 while cooling the blown gas in the later cooling process, thereby improving the service performance of the whole device.

Wherein, the diameter of the air blowing pipe 62 is smaller than that of the through hole 11, an air exhaust channel 63 is formed between the air blowing pipe 62 and the through hole 11, and the device forms the air exhaust channel 63 by the different aperture sizes between the air blowing pipe 62 and the through hole 11, so that the mold does not need to separately design the air exhaust channel 63, and the whole mold production design is simplified.

The upper end of the through hole 11 is provided with a trumpet-shaped opening 111, a joint between the air blowing pipeline 62 and the through hole 11 is also provided with a lug 621 matched with the through hole, the lug 621 is aligned with the opening 111, when the air blowing port 61 does not blow air into the cavity 30, the outside does not have pressure on the air blowing plate 60, at this time, the first spring 64 is in a natural state, the lug 621 and the opening 111 are in a separated state, and at this time, the exhaust channel 63 is in an open state, so that when pouring is performed, the operation of exhausting the air in the cavity 30 through the exhaust channel 63 can be realized; after the pouring is completed, the cavity 30 needs to be cooled by introducing air into the cavity, so that the outside air can be communicated with the air blowing port 61, due to the pressure generated in the whole air blowing process, the air blowing plate 60 can move in the direction of the pouring plate 50 under the action of the pressure, the air blowing pipe 62 is driven by the air blowing plate 60 to move in the direction of the cavity 30, so that the bump 621 can abut against the opening 111, the bump 621 can block the opening 111, that is, the air exhaust channel 63 is sealed in the air blowing and cooling process, the blown air can not be exhausted from the air exhaust channel 63, and the cooling efficiency of the air in the whole air blowing and cooling process is improved.

Wherein, the blowing pipe 62 is provided with a first abutting block 622, the first abutting block 622 is disposed above the protrusion 621, the upper die 10 is integrally recessed from the outer surface thereof to form a first groove 12 matching with the first abutting block 622, the first abutting block 622 is aligned with the first groove 12, when the blowing cooling process is not performed, the first abutting block 622 is in a separated state between the first grooves 12, at this time, the exhaust channel 63 is in an open state, so that the exhaust operation can be performed in the cavity 30, when the blowing cooling operation is performed, under the action of an external pressure, the first abutting block 622 abuts against the first groove 12, so that the first abutting block 622 performs a sealing operation on the exhaust channel 63, and through a double sealing operation of the protrusion 621 and the first abutting block 622, the sealing operation of the exhaust passage 63 in the whole blow cooling process can be effectively enhanced to make the sealing effect thereof better, thereby achieving the sealing state of the inside of the cavity 30 in the cooling and blow process and accelerating the whole cooling process.

Wherein, the outer surface of the air blowing pipeline 62 is sleeved with a first spring 64, one end of the first spring 64 is fixedly connected with the air blowing plate 60, the other end is fixedly connected with the casting plate 50, the first spring 64 is in a natural state when the blow cooling operation is not performed, the first spring 64 is in a compressed state when the blow cooling operation is performed, by the compression and restoration of the deformation of the first spring 64, the movement of the insufflation tube 62 can be effectively self-controlled, it is thereby achieved that, when the blow cooling operation is not being performed, the air discharge passage 63 is in an open state, when the blowing cooling operation is carried out, the blowing pipeline 62 can carry out the sealing operation on the exhaust channel 63, the whole operation for controlling the opening and closing of the exhaust channel 63 has high automation degree, the design is ingenious, and the practicability of the whole mould is greatly improved.

Wherein, the pouring board 50 with be equipped with a plurality of second springs 70 between the board 60 of blowing, it is a plurality of second springs 70 divide to locate blow around the board 60 of blowing, second spring 70 one end rigid coupling in blow board 60, the other end rigid coupling in pouring board 50, each the inboard of second spring 70 all is equipped with dead lever 71, the one end rigid coupling of dead lever 71 in blow on the board 60, the other end with there is certain distance between the pouring board 50, the length of dead lever 71 is shorter in the length of second spring 70, the setting of second spring 70 can be realized effectively blow board 60 with the elastic movement operation between the pouring board 50, its inside setting simultaneously the dead lever 71 can be guaranteed effectively blow the stability of board 60 removal in-process.

The ejection mechanism 40 is provided with a plurality of ejection rods 41, one end of each ejection rod 41 is mounted on the ejection mechanism 40, the other end of each ejection rod 41 penetrates through the lower mold 20, after the whole casting and cooling process is completed, the upper mold 10 is opened, then the ejection mechanism 40 is started, the plurality of ejection rods 41 on the ejection mechanism 40 eject the sand core on the lower mold 20, and therefore people can take the sand core in and out, and the whole sand core mold is manufactured.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A sand core forming die for a transmission shell at the tail end of an automobile is characterized by comprising an upper die, a lower die and an ejection mechanism, wherein the upper die is arranged above the lower die, the ejection mechanism is arranged below the lower die, a cavity is formed between the upper die and the lower die, a pouring plate and an air blowing plate are sequentially arranged above the upper die, the pouring plate is arranged above the upper die, the air blowing plate is arranged above the pouring plate, a plurality of pouring channels are arranged on the pouring plate, the pouring channels are respectively communicated with the cavity in a penetrating manner from the surface of the pouring plate, a plurality of through holes are formed in the upper die, the through holes respectively penetrate through the upper die and are communicated with the cavity, a plurality of air blowing openings and a plurality of air blowing pipelines are formed in the air blowing plate, and the air blowing openings are distributed on the air blowing plate at intervals, one end of each air blowing pipeline is connected with the air blowing port, and the other end of each air blowing pipeline is inserted into the through hole and communicated with the cavity.

2. The sand core forming die for the automobile end drive housing as claimed in claim 1, wherein the diameter of the air blowing duct is smaller than that of the through hole, and an air exhaust passage is formed between the air blowing duct and the through hole.

3. The sand core forming die for the automobile end transmission shell as claimed in claim 2, wherein a trumpet-shaped opening is formed at the upper end of the through hole, a projection matched with the opening is formed at the joint of the air blowing pipeline and the through hole, and the projection is aligned with the opening.

4. The sand core forming die for the automobile end drive housing as claimed in claim 3, wherein a first abutting block is provided on the air blowing duct, the first abutting block is provided above the projection, the upper die is integrally recessed from an outer surface thereof to form a first groove matching with the first abutting block, and the first abutting block is aligned with the first groove.

5. The sand core forming die for the automobile end transmission shell as claimed in claim 4, wherein a first spring is sleeved on the outer surface of the air blowing pipeline, one end of the first spring is fixedly connected to the air blowing plate, and the other end of the first spring is fixedly connected to the casting plate.

6. The sand core forming die for the automobile end transmission housing as claimed in claim 5, wherein a plurality of second springs are disposed between the casting plate and the blowing plate, the plurality of second springs are disposed around the blowing plate, one end of each second spring is fixedly connected to the blowing plate, the other end of each second spring is fixedly connected to the casting plate, a fixing rod is disposed inside each second spring, the fixing rod is fixedly connected to the blowing plate, and the length of the fixing rod is shorter than that of the second spring.

7. The sand core forming die for an automotive end drive housing as claimed in claim 6, wherein a plurality of ejector rods are provided on said ejector mechanism, one end of each of said ejector rods being mounted on said ejector mechanism and the other end thereof penetrating said lower die.