CN203343367U

CN203343367U - Cast hole device avoiding parting surface

Info

Publication number: CN203343367U
Application number: CN 201320371071
Authority: CN
Inventors: 高峰; 肖天成
Original assignee: Hubei Tianmen Pump Industry Co Ltd
Current assignee: Hubei Tianmen Pump Industry Co Ltd
Priority date: 2013-06-26
Filing date: 2013-06-26
Publication date: 2013-12-18
Anticipated expiration: 2023-06-26

Abstract

The utility model provides a cast hole device avoiding a parting surface. The cast hole device is characterized by comprising a sand box in which a cavity is placed, a forming hole sand core and a core placing cylinder sand core, wherein the core placing cylinder sand core is embedded in molding sand during modeling, the width of a reserved space of the core placing cylinder sand core is slightly longer than the forming hole sand core, the forming hole sand core is placed through the space positioned in the core placing cylinder sand core, the forming hole sand core penetrates in the cavity through a hole in the core placing cylinder sand core, and the forming hole sand core is fixed in the cavity by depending on matching of a core head of the sand core with a core head position in the cavity and a core head position in the core placing cylinder sand core. Therefore, no parting surface is generated when a cast hole is produced, and the quantity of the sand box is not increased, thus the production cost is saved. The cast hole device is convenient to operate, the possibility of misplacing a forming hole due to the increase of the parting surface is avoided; due to adoption of the cast hole device, the cast hole is formed and located accurately.

Description

A kind of blowhole device of avoiding die joint

Technical field

The utility model relates to a kind of casting field, particularly a kind of blowhole device of avoiding die joint.

Background technology

Common arriving in blowhole production in foundry goods.Existing blowhole method is to increase die joint first, so aborning, once casting mold produces mould shift, blowhole will misplace, and causes the Mechanical processing of casting surplus not even to cause product rejection, moreover be that blowhole is not cast out aborning, but process by follow-up mechanical processing tools, relative forming hole, processing capacity is larger like this, and, in Foundry Production, this position is not because have hole to cause the local thick casting flaw that greatly easily occurs.

In actual blowhole is produced, generally in model, the center line along hole is made die joint to the withdrawing pattern direction, and forms two-part mo(u)lding, and such two die cavities likely cause mould shift and make the forming hole dislocation when mould assembling, do not reach production requirement.

Summary of the invention

The purpose of this utility model is to provide a kind ofly to be avoided the output die joint and reduces follow-up machining amount and the blowhole device of moulding accurate positioning.

A kind of blowhole device of avoiding die joint is provided, it is characterized in that: comprise sandbox, the forming hole core that is placed with die cavity and put core cylinder core, described putting during core cylinder core is embedded in molding sand when moulding, put core cylinder core headspace width slightly longer than forming hole core, the forming hole core is put into by the locus of putting in core cylinder core, the forming hole core penetrates in die cavity by the hole of putting in core cylinder core, and the forming hole core relies on the core print of self coordinate and be fixed in die cavity with the core print position in die cavity and the core print position of putting in core cylinder core.

The invention has the advantages that: set forming hole core relies on the core print of self coordinate and be fixed in die cavity with the core print position in die cavity and the core print position of putting in core cylinder core, after solidifying, the forming hole core can not be moved, make it with die cavity, become as a whole, thereby do not produce die joint while making to produce blowhole, do not increase sandbox, save production cost.This device is easy to operate, avoids causing because increasing die joint the possibility of forming hole dislocation, and adopts this device blowhole moulding accurate positioning.

The accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is described in further detail;

Fig. 1 is blowhole foundry goods of the present invention (die cavity 1) structural representation;

Fig. 2 is the present embodiment blowhole shaping schematic view;

Fig. 3 is local (the putting core cylinder core 3) schematic top plan view of the present embodiment blowhole moulding.

The specific embodiment

Below in conjunction with accompanying drawing, the present embodiment is further described:

Refer to Fig. 2, comprise sandbox 6, the forming hole core 2 that is placed with die cavity 1 and put core cylinder core 3, the described core cylinder core 3 of putting is embedded in molding sand 5 when moulding, put core cylinder core 3 headspace width slightly longer than forming hole core 2, forming hole core 2 is put into by the locus of putting in core cylinder core 3, forming hole core 2 penetrates in die cavity 1 by the hole of putting in core cylinder core 3, and forming hole core 2 relies on the core print of self coordinate and be fixed in die cavity 1 with the core print position in die cavity 1 and the core print position of putting in core cylinder core 3.

Operating process of the present utility model:

See after Fig. 1 and Fig. 2 put into foundry goods die cavity 1 and insert molding sand 5 at sandbox 6, when approaching the blowhole place, put core cylinder core 3 is embedded in molding sand 5 as headspace when moulding, for putting into forming hole core 2, after molding sand 5 fills up sandbox 6 and solidifies, owing to putting, core cylinder core 3 headspace width are slightly longer than forming hole core 2, forming hole core 2 can be put into smoothly by the locus (as shown in Figure 3) of putting in core cylinder core 3, forming hole core 2 penetrates in die cavity 1 by the hole of putting in core cylinder core 3 afterwards, forming hole core 2 relies on the core print of self coordinate and be fixed in die cavity 1 with the core print position in die cavity 1 and the core print position of putting in core cylinder core 3, then fill up the space of putting core cylinder core 3 with molding sand 4, after solidifying, forming hole core 2 can not be moved, make 1 one-tenth of itself and die cavity as a whole, thereby do not produce die joint while making to produce blowhole, do not increase sandbox, save production cost.

Although above shown detailed embodiment of the present invention, apparent, those skilled in the art is under prerequisite of the present invention, can carry out the part modifications and changes; The content of mentioning in description above and accompanying drawing, only as illustrative case, is not limitation of the present invention, has a kind of blowhole device of avoiding die joint of above-mentioned technical characterictic, all falls into protection domain of the present invention.

Claims

1. a blowhole device of avoiding die joint, it is characterized in that: comprise sandbox, the forming hole core that is placed with die cavity and put core cylinder core, described putting during core cylinder core is embedded in molding sand when moulding, put core cylinder core headspace width longer than forming hole core, the forming hole core is put into by the locus of putting in core cylinder core, the forming hole core penetrates in die cavity by the hole of putting in core cylinder core, and the forming hole core relies on the core print of self coordinate and be fixed in die cavity with the core print position in die cavity and the core print position of putting in core cylinder core.