CN207414281U

CN207414281U - Molding die with sand core exhaust pipe

Info

Publication number: CN207414281U
Application number: CN201721601305.3U
Authority: CN
Inventors: 陈益德; 陈伟强; 陈再健
Original assignee: TIANTAI YINXING MECHANICAL CASTING CO Ltd
Current assignee: Zhejiang Yinxing Machinery Co ltd
Priority date: 2017-11-24
Filing date: 2017-11-24
Publication date: 2018-05-29
Anticipated expiration: 2027-11-24

Abstract

The utility model belongs to technical field of mold, it is related to the molding die with sand core exhaust pipe, the sand core positioned in die cavity including die ontology and die ontology, the more than one riser of connection die cavity is provided on die ontology, the exhaust pipe that riser is plugged on sand core is provided through on the more than one riser, the other end of every exhaust pipe is stretched out outside die ontology, and advantage is：In cast article, resin in precoated sand melts the gas of evaporation generation as the gap between molding sand flows up, until being expelled directly out by exhaust pipe outside molding die, if avoid the generation for the problems such as gas is excluded under the influence of air pressure not in time into formation stomata or hole in the product of casting or pit, it may insure inherent qualities and the performances such as leakproofness, the intensity of cast article, the molding die of the core suitable for carrying precoated sand support.

Description

Molding die with sand core exhaust pipe

Technical field

The utility model belongs to technical field of mold, refers in particular to a kind of molding die with sand core exhaust pipe.

Background technology

Precoated sand is that the molding sand for being mixed with resin is overlying on the metal form with model and by preheating, and heating makes resin Fusing forms one layer of shell, after baking hardening, is removed from template, be used as the sand core of casting mold cast article；Production process In controlled by mold and equipment, just plastic after sand, crust, curing by penetrating, technology stability is preferable；In casting cycle, Product quality stability is good, and the part of some product structures complexity is suitble to produce, but in casting cycle, due to cast temperature compared with Height, the resin in precoated sand can melt evaporation and generate gas, if the gas excludes by the effect of gas pressure to be entered not in time The defects of stomata or hole or pit are formed in the product of casting, these defects will directly affect leakproofness, intensity of product etc. Inherent quality and performance.

The content of the invention

The purpose of this utility model is to provide a kind of molding die with sand core exhaust pipe.

What the purpose of this utility model was realized in：

Molding die with sand core exhaust pipe, the sand core positioned in the die cavity including die ontology and die ontology, mould The more than one riser of connection die cavity is provided on tool body, being provided through riser on the more than one riser inserts The exhaust pipe being connected on sand core, the other end of every exhaust pipe are stretched out outside die ontology.

Above-mentioned exhaust pipe is plugged on the sand core on the downside of riser.

Above-mentioned exhaust pipe is stainless steel tube.

Above-mentioned molding die is the molding die for being molded cooler cover board, and the sand core is on shaping cooler cover board The sand core of related oil duct is provided with more than one on sand core and stretches out upwards and extend the tapered pole in die cavity on the downside of riser, one Above exhaust pipe is plugged on the tapered pole of sand core respectively.

Above-mentioned exhaust pipe has four, and four exhaust pipes are plugged on respectively on four tapered poles of sand core.

In the downside insertion tapered pole of above-mentioned exhaust pipe, the tube bottom closure of the exhaust pipe in tapered pole, insertion cone are inserted into Venthole is arranged at intervals on the tube wall and tube bottom of exhaust pipe in shape column, the sand core and tapered pole are with precoated sand one Molding integral structure.

Above-mentioned sand core and tapered pole is to be integrally formed the integral structure on exhaust pipe with precoated sand.

The utility model is prominent and beneficial compared with prior art to be had the technical effect that：

1st, for the utility model in cast article, the resin in precoated sand melts the gas of evaporation generation between molding sand Gap flow up, until be expelled directly out by exhaust pipe outside molding die, excluded not in time in gas if avoiding the gas The generation of the problems such as under the action of pressure into formation stomata or hole in the product of casting or pit, it can be ensured that cast article The inherent qualities such as leakproofness, intensity and performance.

2nd, the exhaust pipe of the utility model is manufactured using stainless steel tube, Reusability after can recycling, and production cost is low.

3rd, venthole is arranged at intervals in the tube wall of exhaust pipe of the utility model in insertion tapered pole and tube bottom, it can be with Timely and effectively by the gas of the resin thawing evaporation generation in cast article as the gap between the sand grains of precoated sand is upward Flowing, until be expelled directly out by exhaust pipe outside molding die, can also the exhaust pipe lower end of directly never tube bottom enter row Tracheae is simultaneously expelled directly out outside molding die.

4th, the utility model has the advantages of simple structure, and production cost is low, the shaping mould of the core suitable for carrying precoated sand support Tool.

Description of the drawings

Fig. 1 is the stereoscopic schematic diagram of the utility model.

Fig. 2 is the stereoscopic schematic diagram for the sand core that the utility model is connected with exhaust pipe.

Fig. 3 is the sectional view of the utility model.

Specific embodiment

The utility model is further described with specific embodiment below in conjunction with the accompanying drawings, referring to Fig. 1-Fig. 3：

Molding die with 30 exhaust pipe 20 of sand core is positioned in the die cavity including die ontology 10 and die ontology 10 Sand core 30, is provided with the more than one riser 11 of connection die cavity on die ontology 10, on the more than one riser 11 Be provided through the exhaust pipe 20 that riser 11 is plugged on sand core 30, the other end of every exhaust pipe 20 stretch out die ontology 10 it Outside.

Above-mentioned exhaust pipe 20 is plugged on the sand core 30 of 11 downside of riser.

Above-mentioned exhaust pipe 20 is stainless steel tube.

Above-mentioned molding die is the molding die for being molded cooler cover board, and the sand core 30 is shaping cooler cover board The sand core 30 of upper correlation oil duct is provided with more than one taper stretched out upwards and extend 11 downside of riser in die cavity on sand core 30 Column 31, more than one exhaust pipe 20 are plugged on respectively on the tapered pole 31 of sand core 30.

Above-mentioned exhaust pipe 20 has four, and four exhaust pipes 20 are plugged on respectively on four tapered poles 31 of sand core 30.

In the downside insertion tapered pole 30 of above-mentioned exhaust pipe 20, the tube bottom closure of the exhaust pipe in tapered pole 30 is inserted into, Ventilation hole, the sand core 30 and tapered pole are arranged at intervals on the tube wall and tube bottom of exhaust pipe 10 in insertion tapered pole 30 31 be with the integrally formed integral structure of precoated sand.

Above-mentioned sand core 30 and tapered pole 31 is to be integrally formed the integral structure on exhaust pipe 20 with precoated sand.

Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this It encloses, therefore：The equivalence changes that all structures, shape, principle according to the utility model are done, should all be covered by the protection of the utility model Within the scope of.

Claims

1. the molding die of sand core exhaust pipe is carried, the sand core positioned in the die cavity including die ontology and die ontology, mold The more than one riser of connection die cavity is provided on body, it is characterised in that：It is provided on the more than one riser The exhaust pipe being plugged on through riser on sand core, the other end of every exhaust pipe are stretched out outside die ontology.

2. the molding die according to claim 1 with sand core exhaust pipe, it is characterised in that：The exhaust pipe is inserted It is connected on the sand core on the downside of riser.

3. the molding die according to claim 1 with sand core exhaust pipe, it is characterised in that：The exhaust pipe is not Become rusty steel pipe.

4. the molding die according to claim 1 with sand core exhaust pipe, it is characterised in that：The molding die is The molding die of cooler cover board is molded, the sand core sets to be molded the sand core of related oil duct on cooler cover board on sand core It is equipped with more than one to stretch out upwards and extend the tapered pole in die cavity on the downside of riser, more than one exhaust pipe is plugged on sand respectively On the tapered pole of core.

5. the molding die according to claim 4 with sand core exhaust pipe, it is characterised in that：The exhaust pipe has four Root, four exhaust pipes are plugged on respectively on four tapered poles of sand core.

6. the molding die with sand core exhaust pipe according to claim 1-5 any one, it is characterised in that：Described In the downside insertion tapered pole of exhaust pipe, the tube bottom closure of the exhaust pipe in tapered pole, the exhaust pipe being inserted into tapered pole are inserted into Tube wall and tube bottom on be arranged at intervals with venthole, the sand core and tapered pole are with the integrally formed integral type knot of precoated sand Structure.

7. the molding die according to claim 6 with sand core exhaust pipe, it is characterised in that：The sand core and taper Column is to be integrally formed the integral structure on exhaust pipe with precoated sand.