CN205927013U

CN205927013U - A mould for casting valve body

Info

Publication number: CN205927013U
Application number: CN201620624918.8U
Authority: CN
Inventors: 钱仁元
Original assignee: Taicang Shunchang Forging Co Ltd
Current assignee: Taicang Shunchang Forging Co Ltd
Priority date: 2016-06-23
Filing date: 2016-06-23
Publication date: 2017-02-08
Anticipated expiration: 2026-06-23

Abstract

The utility model provides a mould for casting valve body, includes sand box (1), sand mould and core (2), sand mould and core (2) vacuole formation, core (2) are including being cylindric inner core (8) and inciting somebody to action core sand bed (9) that inner core (8) parcel was lived, having opened on the surface of core sand bed (9) first exhaust hole (4), inner core (8) both ends are equipped with vertically to be run through the through -hole of inner core (8) is equipped with second exhaust hole on inner core (8) periphery, first exhaust hole (4), second exhaust hole and through -hole link up each other. The utility model discloses save a large amount of resins and molding sand, reduced manufacturing cost to effectively reduce foundry goods sand inclusion, sand hole scheduling problem, improved the yield of foundry goods, be equipped with the exhaust hole of having a perfect understanding each other on core sand bed and inner core, be favorable to pouring into a mould the discharge of the gas of in -process production.

Description

A kind of mould for casting valve body

Technical field

This utility model is related to casting mould field, more particularly, to a kind of mould for casting valve body.

Background technology

China is Metal casting producer, and according to statistics, in China's castings production, the shared ratio of core casting can reach 60%- 70% it can be seen that, the importance of sand casting process is self-evident.Because the Modeling Material used by sand casting is inexpensively easy , Casting mold manufacturing is simple, the separate room of foundry goods is produced, produces by batch and produce in a large number and all adapt to, for a long time, always cast Make the basic technology in production.

When manufacturing large valve body, it is internal to be hollow structure, and core sand moulding operation consumes substantial amounts of resin and molding sand, Production cost is also higher, and in casting process, core can produce a large amount of gases, and solid core is unfavorable for the discharge of gas.

In view of above-mentioned defect, the design people, actively research and innovation in addition, to founding a kind of being used for of new structure The fixture of casting valve body is so as to more the value in industry.

Content of the invention

For solving above-mentioned technical problem, goal of the invention of the present utility model is to provide a kind of mould for casting valve body Tool, carries out the moulding of core outside described inner core, and has steam vent outside core and inner core, efficiently solves using tree The big problem of fat sand molding gas forming amount, saves resin sand consumption, cost-effective.

Of the present utility model for casting Valve Block Mould, including sandbox, sand mold and core, between described sand mold and core formed Cavity, described core includes cylindrical inner core and the core layer of sand wrapping described inner core, the table of described core layer of sand First row pore is had on face, described inner core two ends are provided with the through hole longitudinally through described inner core, and described inner core periphery sets There is second row pore, described first row pore, second row pore and through hole are mutually communicated.

Further, described sand mold is multiple structure, the resin including the damp sand layer contacting with sandbox near core Layer of sand, is also coated with anti-stick coating in described resin layer of sand near the side of core, and described sandbox top also has sprue channel open, described Sprue channel open is opened in the middle of sandbox and the chamber portion between core and sand mold connects.

By such scheme, this utility model at least has advantages below：

This utility model passes through to carry out the moulding of core outside inner core, and sand mold adopts different layer of sand structures, saves Substantial amounts of resin and molding sand, reduce production cost；Scribble anti-stick coating outside sand mold, effectively reduce foundry goods burning into sand, casting The problems such as part sand holes, improve the yield rate of foundry goods；Core layer of sand and inner core are provided with the steam vent being mutually communicated, are conducive to The discharge of the gas producing in casting process.

Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model Art means, and being practiced according to the content of description, below with preferred embodiment of the present utility model and coordinate accompanying drawing detailed Describe in detail bright as after.

Brief description

Fig. 1 is structural representation of the present utility model.

Specific embodiment

With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Embodiment is used for this utility model is described, but is not limited to scope of the present utility model.

Referring to Fig. 1, a kind of mould for casting valve body, including sandbox 1, sand mold and core 2, shape between sand mold and core 2 Become the cavity for casting metal liquid, described core 2 includes cylindrical inner core 8 and the type wrapping described inner core 8 Core sand layer 9, the surface of described core layer of sand 9 has first row pore 4, and described inner core 8 two ends are provided with longitudinally through described interior The through hole of core 8, inner core 8 periphery is additionally provided with second row pore, and first row pore 4, second row pore and through hole are mutually communicated, The steam vent being mutually communicated is provided with core layer of sand and inner core, is conducive to the discharge of the gas of generation in casting process.

Sand mold is multiple structure, and the resin layer of sand 6 including the damp sand layer 5 contacting with sandbox 1 near core 2, in institute State resin layer of sand 6 and be also coated with anti-stick coating 3 near the side of core 2, sand mold adopts different layer of sand structures, saves substantial amounts of Resin and molding sand, reduce production cost；Scribble anti-stick coating outside sand mold, effectively reduce foundry goods burning into sand, sand hole The problems such as, improve the yield rate of foundry goods.

Sandbox 1 top also has sprue channel open 7, and sprue channel open 7 is opened in the middle simultaneously cavity portion and between core 2 and sand mold of sandbox 1 Divide connection, molten metal pours into cavity from sprue channel open 7 and poured into a mould.

The above is only preferred implementation of the present utility model, be not limited to this utility model it is noted that For those skilled in the art, on the premise of without departing from this utility model know-why, can also do Go out some improvement and modification, these improve and modification also should be regarded as protection domain of the present utility model.

Claims

1. a kind of mould for casting valve body, including sandbox (1), sand mold and core (2), shape between described sand mold and core (2) Become cavity it is characterised in that：Described core (2) includes cylindrical inner core (8) and the core wrapping described inner core (8) Layer of sand (9), the surface of described core layer of sand (9) has first row pore (4), described inner core (8) two ends be provided with longitudinally through The through hole of described inner core (8), described inner core (8) periphery is provided with second row pore, described first row pore (4), second row Pore and through hole are mutually communicated.

2. a kind of mould for casting valve body according to claim 1 it is characterised in that：Described sand mold is tied for multilamellar Structure, the resin layer of sand (6) including the damp sand layer (5) contacting with sandbox (1) near core (2), in described resin layer of sand (6) Side near core (2) is also coated with anti-stick coating (3).

3. a kind of mould for casting valve body according to claim 1 it is characterised in that：Described sandbox (1) top is also Have sprue channel open (7), described sprue channel open (7) is opened in the middle of sandbox (1) and the chamber portion and between sand mold connects with core (2).