CN201308969Y

CN201308969Y - Sand-shooting mechanism

Info

Publication number: CN201308969Y
Application number: CN 200820199374
Authority: CN
Inventors: 杨洪伟; 李嘉
Original assignee: Suzhou Mingzhi Technology Co Ltd
Current assignee: Suzhou Mingzhi Technology Co Ltd
Priority date: 2008-11-28
Filing date: 2008-11-28
Publication date: 2009-09-16
Anticipated expiration: 2018-11-28

Abstract

The utility model relates to a sand-shooting mechanism, which comprises a main body sand-shooting air exhaust mechanism, a sand storage barrel arranged below the main body sand-shooting air exhaust mechanism and used for storing core sand inside and a shooting head positioned under the sand storage barrel and provided with a plurality of sand-shooting holes on the shooting head, wherein, the main body sand-shooting air exhaust mechanism is used for shooting the downward sand-shooting airflow into the sand storage barrel, a shooting head sand-shooting mechanism is also arranged above the shooting head, and the downward sand-shooting airflow is shot into the hooting head through the shooting head sand-shooting mechanism. The sand-shooting air inlet is carried out above the shooting head during the staring stage of sand-shooting, the core sand in the shooting head is driven, the required kinetic energy is smaller, and correspondingly, the required sand-shooting airflow pressure is lower, therefore, the air intake quantity as well as the loss of the die are both reduced.

Description

Penetrate sand mechanism

Technical field

The utility model relates to a kind of sand mechanism of penetrating, concrete is a kind of be used to make core penetrate sand mechanism.

Background technology

In foundry production, need the preparation core.Penetrate sand mechanism (1) core sand is formed core through the consolidation moulding again with after injecting in the core box (5) at a high speed, penetrating sand mechanism (1) generally comprises cartridge (2), penetrates head (3) and main body and penetrate sand exhaust gear (4), core box (5) is set at the below of penetrating sand mechanism (1), core sand is penetrated sand exhaust gear (1) in main body and is injected injection cartridge (2) under the drive of air-flow from top to bottom when penetrating sand, and by the head (3) of penetrating that is arranged on blasting unit (2) bottom core sand is injected in the core box (5), in core box (5), obtain the consolidation aftershaping.

Wherein, the consolidation of core is by draught head and penetrate sand kinetic energy and comprehensively finish, and wherein: the draught head consolidation is meant that poor (P1-P2) by near the air pressure P2 of the air pressure P1 on core box (5) top and core box (5) lower discharge hole makes core sand obtain consolidation; Penetrating sand kinetic energy consolidation is that compacting effect is good more because high speed gas sand flow (core sand mixes with air-flow) impacts on the interior layer of sand of core box (5), and the kinetic energy of gas sand flow makes core sand obtain consolidation, and gas sand flow flow velocity is big more, and impulsive force is just big more.The latter is thought that by the insider influence of consolidation of correlation sand is bigger, occupies main status in core consolidation process.

Kinetic energy (1/2mv ²) size depend on core sand through the flowability of cartridge (2) to core box (5) process (v) size, flowability is good more, kinetic energy rejection is more little, core sand is easy more consolidation in the core box die cavity.But also can store the part core sand owing to penetrate head in (3), the core sand in the cartridge (2) mobile brought certain resistance, influence the compacting effect of core sand in the core box die cavity.

The utility model content

The purpose of this utility model be to provide a kind of not only can improve the core degree of packing but also can slow down the core box loss penetrate sand mechanism.

For achieving the above object, the technical scheme that the utility model adopted is:

A kind of sand mechanism of penetrating, comprise that main body penetrates the sand exhaust gear, is arranged on main body and penetrates cartridge that sand exhaust gear below and its interior reservoir have core sand, be positioned under the cartridge and have the head of penetrating of a plurality of sand-spraying holes on it, main body is penetrated the sand exhaust gear and inject the downward sand air-flow of penetrating in cartridge, the top of penetrating head also is provided with to be penetrated head and penetrates sand mechanism, penetrates head and penetrates sand mechanism head is inner injects the downward sand air-flow of penetrating to penetrating.

Because the employing of technique scheme, the utility model compared with prior art has the following advantages:

Owing to is above penetrating head, to penetrate sand blast gas penetrating the sand incipient stage, drive be a core sand of penetrating in the head, required kinetic energy is less, and is corresponding, required to penetrate the sand stream pressure lower, so promptly reduced air inflow, slowed down the loss of mould again.Cooperate the cartridge of penetrating under the sand air stream drives of penetrating the sand exhaust gear in main body carry out thereafter to penetrate sand and exhaust action, strong assurance the degree of packing of core.

Description of drawings

Fig. 1 is a front view of the present utility model;

Fig. 2 is that the A-A of Fig. 1 is to cutaway view;

Wherein: 1, penetrate sand mechanism; 2, cartridge; 3, penetrate head; 31, sand-spraying hole; 4, main body is penetrated the sand exhaust gear; 41, first control valve; 5, core box; 6, penetrate head and penetrate sand mechanism; 61, airflow hole; 62, air inlet pipeline; 63, second control valve.

The specific embodiment

As shown in Figure 1 penetrate sand mechanism 1, comprise main body penetrate sand exhaust gear 4, be arranged on main body penetrate cartridge 2 that sand exhaust gear 4 belows and its interior reservoir have core sand, be positioned at have a plurality of sand-spraying holes 31 under the cartridge 2 and on it penetrate 3, main body is penetrated sand exhaust gear 4 and inject the downward sand air-flow of penetrating in cartridge 2, core sand penetrates 3 by described sand-spraying hole 31, form core being arranged in a core box 5 of penetrating below 3, main body is penetrated sand exhaust gear 4 and is connected with one and is used to control first control valve 41 of penetrating the sand throughput.

Penetrate a top of 3 and also be provided with and penetrate head and penetrate sand mechanism 6, penetrate head and penetrate sand mechanism 6 and inject the downward sand air-flow of penetrating to penetrating 3 inside.

Penetrate head and penetrate the airflow hole 61 that sand mechanism 6 comprises a plurality of settings that are connected with an internal cavity of penetrating 3.As shown in Figure 2, a plurality of airflow hole 61 circular array in one plane promptly form a planar annular, and a plurality of airflow holes 61 are distributed in the sand export periphery of cartridge 2.A plane and a plurality of described sand-spraying hole 31 plane parallel of penetrating 3.Penetrating head penetrates the sand air-flow of penetrating of sand mechanism 6 and goes out in the cavity of incident 3 from planar annular.

Each airflow hole 61 all connects air inlet pipeline 62.A plurality of air inlet pipelines 62 corresponding to each airflow hole 61 are provided with around cartridge 2.Be connected with on the air inlet pipeline 62 to be used to control and penetrate head and penetrate second control valve, 63, the second control valves 63 that the intake velocity of sand mechanism 6 and then control penetrates 3 the sand flow amount of penetrating and be connected with a plurality of air inlet pipelines 62.

Penetrate sand when work when penetrating sand mechanism 1, at first control second control valve 63, make and penetrate the sand air-flow and enter from a plurality of airflow holes 61 of penetrating 3 top and penetrate head, drive core sand and enter core box 5 and fill.Penetrating the last of sand process, controlling main body that first control valve 41 drives cartridges 2 tops and penetrate sand exhaust gear 4 and penetrate the sand air-flow, core sands form in the cartridge 2 penetrates sand kinetic energy, makes core sand further compacting in mould.At last, the air bleeding valve of penetrating sand exhaust gear 4 inside by main body carries out the exhaust action.

Because penetrating the sand incipient stage is to penetrate sand blast gas above penetrating 3, drive be a core sand of penetrating in 3, required kinetic energy is less, and is corresponding, required to penetrate the sand stream pressure lower, so promptly reduced air inflow, slowed down the loss of core box again.Cooperate the cartridge of penetrating under the sand air stream drives 2 of penetrating sand exhaust gear 4 in main body carry out thereafter to penetrate sand, strong assurance the degree of packing of core.

Claims

1, a kind of sand mechanism (1) of penetrating, comprise that main body penetrates sand exhaust gear (4), be arranged on described main body and penetrate the cartridge (2) that sand exhaust gear (4) below and its interior reservoir have core sand, be positioned under the described cartridge (2) and have on it a plurality of sand-spraying holes (31) penetrate the head (3), described main body is penetrated sand exhaust gear (4) and inject the downward sand air-flow of penetrating in described cartridge (2), it is characterized in that: the described top of penetrating head (3) also is provided with to be penetrated head and penetrates sand mechanism (6), and the described head of penetrating is penetrated sand mechanism (6) and injected the downward sand air-flow of penetrating to described head (3) inside of penetrating.

2, the sand mechanism of penetrating according to claim 1 is characterized in that: the described head of penetrating is penetrated the airflow hole (61) that sand mechanism (6) comprises that a plurality of and described internal cavity of penetrating head (3) is connected and is provided with.

3, the sand mechanism of penetrating according to claim 2 is characterized in that: a plurality of described airflow holes (61) circular array in one plane.

4, the sand mechanism of penetrating according to claim 3 is characterized in that: described plane and the described described plane parallel of a plurality of described sand-spraying hole (31) of penetrating head (3).

5, the sand mechanism of penetrating according to claim 2 is characterized in that: each described airflow hole (61) all is connected to air inlet pipeline (62).

6, the sand mechanism of penetrating according to claim 5 is characterized in that: a plurality of described air inlet pipeline (62) corresponding to each described airflow hole (61) is provided with around described cartridge (2).

7, the sand mechanism of penetrating according to claim 5 is characterized in that: be connected with on the described air inlet pipeline (62) and be used to control the described head of penetrating and penetrate the intake velocity of sand mechanism (6) and then control described second control valve (63) of penetrating the sand flow amount of penetrating of head (3).