CN214640067U

CN214640067U - Water jacket core box

Info

Publication number: CN214640067U
Application number: CN202022402586.8U
Authority: CN
Inventors: 史继之
Original assignee: Huadong Teksid Automotive Foundry Co ltd
Current assignee: Huadong Teksid Automotive Foundry Co ltd; Hua Dong Teksid Automotive Foundry Co Ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-11-09
Anticipated expiration: 2030-10-26

Abstract

The utility model discloses a water jacket core box, which comprises a core box lower die, a core box upper die, two core box side dies and two die sinking guide plates; the die sinking deflector face is equipped with two chutes that incline to the width direction from top to bottom gradually to the medial surface of core box side mould, the tip of every core box side mould be equipped with this chute complex lug, two core box side moulds open to both sides along the chute incline direction nature gradually along with core box lower mould downstream, and can only remove along the chute direction and form the die sinking effect of smooth transition, can not produce with fashioned psammitolite and core box upper die and interfere, also can not destroy fashioned psammitolite because of receiving external force influence.

Description

Water jacket core box

Technical Field

The utility model relates to a core box structure field of water jacket psammitolite.

Background

The side surface of the water jacket core of the engine cylinder body is provided with a water jacket sand outlet hole and other shapes, so that a four-die water jacket core box is often required to be manufactured.

However, in the application process of the quarto-die water jacket core box, the horizontal die opening direction is usually expanded due to various reasons such as sand inclusion, untimely cleaning, untight die assembly and the like, so that the water jacket core is expanded. After the sand core is formed by injecting sand, the four dies of the water jacket core box are separated from each other to take out the sand core formed inside. However, when the core expanding phenomenon exists, the four-split mold water jacket core boxes are difficult to separate from each other stably.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a water jacket core box solves the technical problem that how to make four die water jacket core box be difficult to steady alternate segregation.

In order to achieve the above purpose, the utility model can adopt the following technical proposal:

a water jacket core box comprises a core box lower die, a core box upper die positioned above the core box lower die, two core box side dies positioned between the core box lower die and the core box upper die, and two die opening guide plates; the two core box side dies are mutually butted, and an inner cavity is formed among the core box lower die, the core box upper die and the two core box side dies; the inner side surface of the die opening guide plate facing the core box side die is provided with two inclined grooves which gradually incline to the width direction from top to bottom, the end part of each core box side die is provided with a convex block matched with the inclined grooves, and the convex block is inserted into the inclined grooves and can move along the direction of the inclined grooves.

Furthermore, two chutes arranged on each die sinking guide plate are in a shape of Chinese character 'ba'.

Further, the cross section of the chute is convex, and the lug comprises a cylindrical rear end and a pie-shaped front end, and the diameter of the front end is larger than that of the rear end.

Furthermore, the lower surface of the upper die of the core box is provided with an accommodating space, and two inner side surfaces of the accommodating space are gradually expanded outwards from inside to outside; the upper surface of the core box side die is provided with a top block which extends upwards into the accommodating space, the outer side surface of the top block is an inclined surface which gradually expands outwards from top to bottom, and the outer side surface of the top block is matched with the inner side surface of the accommodating space; when the convex block of the core box side die moves downwards from the inclined groove, the outer side face of the top block also moves downwards relative to the inner side face of the accommodating space.

Furthermore, the lower surface of the core box upper die is provided with a circle of sealing ring, the sealing ring is arranged around the outer side of the accommodating space in a circle, and the sealing ring is used for sealing the contact part of the core box upper die and the core box side die.

Has the advantages that: the utility model discloses through setting up the chute and the lug cooperation among the water jacket core box, make two core box side moulds receive the location of two directions of chute place face, can outwards pop out, can offset the core phenomenon that rises that probably exists, make the position relatively stable of core box lower mould, core box side mould. When the water jacket core box is opened, the core box lower die only needs to be moved downwards, the two core box side dies are naturally and gradually opened towards two sides along the inclined direction of the inclined groove along with the downward movement of the core box lower die, and can only move along the inclined groove direction to form a stably transitional opening effect, so that the interference between the core box side dies and the formed core box upper die can be avoided, and the formed core can not be damaged due to the influence of external force.

Drawings

Fig. 1 is an exploded perspective view of the water jacket core box of the present invention (only one mold opening guide plate is shown).

Fig. 2 is an exploded perspective view of the water jacket core box of the present invention, with the core box lower mold removed, and is viewed from the bottom.

Detailed Description

Please refer to fig. 1 and 2, the present invention discloses a water jacket core box, which comprises a core box lower die 1, a core box upper die 2 located above the core box lower die, two core box side dies 3 located between the core box lower die 1 and the core box upper die 2, and two die sinking guide plates 4. The two core box side dies 3 are mutually butted, and an inner cavity is formed among the core box lower die 1, the core box upper die 2 and the two core box side dies 3. The inner cavity is the cavity of the molding sand core. The inner side surface of the die opening guide plate 4 facing the core box side die is provided with two inclined grooves 41 which are gradually inclined towards the width direction from top to bottom, the end part of each core box side die 3 is provided with a convex block 31 matched with the inclined grooves, and the convex block 31 is inserted into the inclined grooves 41 and can move along the direction of the inclined grooves 41. When the water jacket core box is opened, only the core box lower die 1 needs to move downwards, the two core box side dies 3 are naturally and gradually opened towards two sides along the inclined direction of the inclined groove 41 along with the downward movement of the core box lower die 1, and can only move along the inclined groove 41 direction to form a stably-transitional opening effect, so that the interference between the core box lower die and the formed core box upper die 2 can be avoided, and the formed core can not be damaged due to the influence of external force. Corresponding to the mold opening method, two inclined grooves 41 are provided on each mold opening guide plate 4 in a shape of a Chinese character 'ba'. The cross-section of the chute 41 is "convex" and the projection 31 comprises a cylindrical rear end and a pie-shaped front end 32, with the diameter of the front end 32 being greater than the diameter of the rear end.

An accommodation space (not shown) is provided on the lower surface of the core box upper die 2. The two inner side surfaces of the accommodating space are gradually expanded outwards from inside to outside. The upper surface of the core box side die 3 is provided with a top block 34 which extends upwards into the accommodating space, the outer side surface 35 of the top block 34 is an inclined surface which gradually expands outwards from top to bottom, and the outer side surface 35 of the top block is matched with the inner side surface of the accommodating space. When the projection 31 of the core box side mold 3 moves downward from the inclined groove 41, the outer surface 35 of the top block also moves downward relative to the inner surface of the housing space.

Furthermore, a circle of sealing rings 21 are arranged on the lower surface of the core box upper die 2, the sealing rings 21 are arranged around the outer side of the accommodating space in a circle, and the sealing rings 21 are used for sealing the contact part of the core box upper die 2 and the core box side die 3, so that tight die assembly can be ensured, and air leakage is avoided during sand shooting; meanwhile, the sand does not infiltrate into the box dividing surface to cause expansion when the sand is shot.

The utility model discloses the method and the way of realizing this technical scheme are many specifically, above only the preferred embodiment of the utility model. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention. All the components not specified in the present embodiment can be realized by the prior art.

Claims

1. A water jacket core box is characterized in that: the core box comprises a core box lower die, a core box upper die positioned above the core box lower die, two core box side dies positioned between the core box lower die and the core box upper die, and two die opening guide plates; the two core box side dies are mutually butted, and an inner cavity is formed among the core box lower die, the core box upper die and the two core box side dies; the inner side surface of the die opening guide plate facing the core box side die is provided with two inclined grooves which gradually incline to the width direction from top to bottom, the end part of each core box side die is provided with a convex block matched with the inclined grooves, and the convex block is inserted into the inclined grooves and can move along the direction of the inclined grooves.

2. The water jacket core box according to claim 1, wherein: two chutes arranged on each die sinking guide plate are in a splay shape.

3. The water jacket core box according to claim 1 or 2, wherein: the cross section of the chute is convex, and the lug comprises a cylindrical rear end and a pie-shaped front end, and the diameter of the front end is larger than that of the rear end.

4. The water jacket core box according to claim 3, wherein: the lower surface of the upper die of the core box is provided with an accommodating space, and two inner side surfaces of the accommodating space are gradually expanded outwards from inside to outside; the upper surface of the core box side die is provided with a top block which extends upwards into the accommodating space, the outer side surface of the top block is an inclined surface which gradually expands outwards from top to bottom, and the outer side surface of the top block is matched with the inner side surface of the accommodating space; when the convex block of the core box side die moves downwards from the inclined groove, the outer side face of the top block also moves downwards relative to the inner side face of the accommodating space.

5. The water jacket core box according to claim 4, wherein: the lower surface of the core box upper die is provided with a circle of sealing ring which is arranged around the outer side of the accommodating space in a circle and is used for sealing the contact part of the core box upper die and the core box side die.