阅读说明：本技术 3d打印漏空模具高压吹砂设施的操作方法 (Operation method of high-pressure sand blowing facility for 3D printing of leaky mold ) 是由 高龙生 徐鹏 吴刚 于 2018-05-29 设计创作，主要内容包括：本发明3D打印漏空模具高压吹砂设施的操作方法属于模具加工设施领域,利用高压气泵压缩空气、通过高压气管高速喷出将气流射向砂芯模具漏空部位,砂芯模具漏空部位3D打印机未喷洒树脂胶的铸造砂属于松动状态、在高速气流的冲击下会迅速散开,此时回收罐由离心风机抽为负压、回收罐通过钢丝软管将高压气管喷口周围的空气及铸造砂一同被吸入回收罐、在回收罐中空间变大气流变缓由于铸造砂重于空气会落入罐底、气流从离心风机流出,由于高压气流基本不会破坏砂芯模具、而且能将漏空弯道部位的铸造砂强行吹出,达到内外清理干净的效果。(The invention relates to an operation method of a high-pressure sand blowing facility for a 3D printing leaky mold, which belongs to the field of mold processing facilities, wherein air is compressed by a high-pressure air pump, air flow is ejected to a leaky part of a sand core mold through a high-pressure air pipe at a high speed, casting sand which is not sprayed with resin glue by a 3D printer at the leaky part of the sand core mold belongs to a loose state and can be rapidly dispersed under the impact of high-speed air flow, at the moment, a recovery tank is pumped into negative pressure by a centrifugal fan, the air around a nozzle of the high-pressure air pipe and the casting sand are sucked into the recovery tank together by the recovery tank through a steel wire hose, atmospheric flow in the recovery tank becomes slow, the casting sand falls into a tank bottom due to the fact that the air is heavier than the air, the air flow flows out of the centrifugal fan, and the high-pressure air.)

1.3D printing high-pressure sand blowing facility operation method of an empty leaking mold, which is characterized in that when in use, a base is firstly placed at the bottom of a sand box, printing data are input into a 3D printer, a sand spreader and the 3D printer are simultaneously started, a foot layer of the sand spreader spreads sand to the bottom of the sand box, the 3D printer sprays resin glue on casting sand paved at the bottom of the sand box according to the input data foot layer, after printing is finished, the 3D printer and the sand spreader return, the sand box is placed for 3-4 hours, after the resin glue is naturally dried, a sand sucker is used for completely sucking away the casting sand at the edge of the sand box and completely exposing the empty leaking mold for 3D printing, at the moment, a worker starts a high-pressure air pump motor and a centrifugal fan motor through a distribution box, the high-pressure air pump rapidly compresses air into an air storage tank under the driving of the motor, the high-speed motor drives a centrifugal fan to rotate at high speed to, The recovery tank sucks air around an injection pipe at the front end of a high-pressure air pipe into the recovery tank through a steel wire hose, a worker holds the front end of the steel wire hose, the injection pipe is aligned to a void part of a void sand core mould, an air valve switch is pressed, high-pressure air compressed in an air storage tank is sprayed out from the injection pipe at a high speed through the high-pressure air pipe and directly impacts the casting sand at the void part of the mould, the casting sand which is not sprayed with resin glue by a 3D printer at the void part of the sand core mould belongs to a loose state and is rapidly dispersed under the impact of high-speed airflow, at the moment, the air sucked into the recovery tank can together carry the dispersed casting sand to be sucked into the recovery tank from an inlet of the steel wire hose through the steel wire hose, the air is gradually increased after entering the recovery tank, the air flow is reduced, the casting sand falls into the tank bottom due to the weight of the air and flows out of a centrifugal, And after the mold is completely cleaned, the hanging arm is used for lifting the leaky sand core mold together with the base to a casting sand box for processing and casting, and the high-pressure air flow basically cannot damage the sand core mold and can forcibly blow out the casting sand at the leaky bend part, so that the effect of cleaning the inside and the outside is achieved.

Technical Field

the invention discloses an operation method of a high-pressure sand blowing facility for a 3D printing leaky mold, belongs to the field of mold processing facilities, and particularly relates to a method for cleaning casting sand in a leaky space of a sand core by using high-pressure gas after peripheral casting sand of a 3D printing sand core mold is cleaned.

Background

with the arrival of the third industrial revolution, the casting facility is also changed greatly, 3D printing of high-precision sand core molds is an ideal facility for most casting enterprises, after printing of the leaky sand core molds is completed, peripheral casting sand needs to be cleaned firstly, then the casting sand in the middle leaky place needs to be cleaned, most of the peripheral casting sand is recovered by a sand sucker, the leaky part is manually and carefully emptied by using a bamboo stick or a wood stick, the process is labor-consuming and time-consuming, part of residual casting sand exists in the leaky central curve part, the casting quality is affected, and if the sand core molds are moved randomly, damage easily occurs, the sand cores are scrapped, and loss is brought to the enterprises.

Disclosure of Invention

The high-pressure sand blowing facility for the 3D printing emptying mould overcomes the difficulties, air is compressed by a high-pressure air pump, air flow is ejected to the emptying part of the sand core mould through a high-pressure air pipe at a high speed, casting sand which is not sprayed with resin glue by a 3D printer at the emptying part of the sand core mould belongs to a loose state and can be rapidly dispersed under the impact of high-speed air flow, the recovery tank is pumped into negative pressure by a centrifugal fan, air around a nozzle of the high-pressure air pipe and the casting sand are sucked into the recovery tank together by the recovery tank through a steel wire hose, atmospheric change in the recovery tank is slowed down, the casting sand falls into the tank bottom due to the fact that the casting sand is heavier than the air, and the air flow flows out of the centrifugal fan, and the high-pressure air flow basically cannot damage the sand core mould and can forcibly blow out the.

3D prints and leaks empty mould high pressure sand blowing facility: the sand box comprises a sand box 1, a base 2, an air leaking sand core mold 3, a 3D printer 4, a steel wire hose 5, a high-pressure air pipe 6, a recovery tank 7, a centrifugal fan 8, a high-speed motor 9, an air storage tank 10, a high-pressure air pump 11, an air pump motor 12, an air valve 13, a power line 14 and a distribution box 15;

the sand box is cuboid, the top of the sand box is open, the H-shaped 3D printer is arranged on the sand box, the cuboid base is arranged at the bottom of the sand box, and the polygonal combined hollow sand core mold is arranged on the sand base;

The recovery tank consists of two parts, the upper surface of the recovery tank is conical, the lower surface of the recovery tank is cylindrical, the top end of the recovery tank is provided with a disc-shaped centrifugal fan, an inlet of the fan is communicated with the recovery tank, the inside of the fan is provided with a disc-shaped centrifugal fan, the upper surface of the fan is provided with a cylindrical high-speed motor connected with the centrifugal fan, the side surface of the recovery tank is provided with a cylindrical steel wire hose, the upper surface of the steel wire hose is provided with a tubular high-pressure air pipe, the top end of the high-pressure air pipe is connected with an inlet of a Z-shaped air valve, the front end of the Z-shaped air valve is arranged in the middle position inside the front end of the steel wire;

the air storage tank is cylindrical, the right side of the air storage tank is connected with the tail end of the high-pressure air pipe, a cylindrical high-pressure air pump and a cylindrical air pump motor are arranged on the air storage tank, an outlet of the air pump is connected with the inside of the air storage tank through a pipeline, a middle shaft of the high-pressure air pump is connected with a middle shaft of the air pump motor, and a supporting wheel is arranged at the bottom of the air storage tank;

the distribution box is cuboid and is connected with the high-speed motor and the air pump motor through power lines.

Has the advantages that: after the 3D printing of the hollow sand core mold is finished, peripheral casting sand needs to be cleaned firstly, then the casting sand in the hollow space in the middle needs to be cleaned, the hollow part is manually hollowed by using a bamboo stick or a wood stick, part of residual casting sand exists at the hollow center bend part, the casting quality is affected, and if the sand core mold is moved randomly, the sand core is damaged easily, and the sand core is scrapped. An operation method of a high-pressure sand blowing facility of a 3D printing leaky mold comprises the steps that air is compressed by a high-pressure air pump, air flow is jetted to a leaky position of a sand core mold through high-pressure air pipes in a high-speed spraying mode, casting sand which is not sprayed with resin glue by a 3D printer at the leaky position of the sand core mold is in a loose state and can be rapidly dispersed under the impact of high-speed air flow, at the moment, a recovery tank is pumped into negative pressure by a centrifugal fan, air around a nozzle of the high-pressure air pipes and casting sand are sucked into the recovery tank through a steel wire hose by the recovery tank, air flow changing in the recovery tank is slowed down, the casting sand falls into a tank bottom due to the fact that the casting sand is heavier than the air, the air flow flows out of the centrifugal fan, the sand core mold cannot be damaged basically due.

drawings

FIG. 1 is a schematic view of a 3D printing leaky mold high-pressure sand blowing facility;

Fig. 2 is a schematic view of the connection between the distribution box and the high-speed motor and the air pump motor through power lines.

Detailed Description

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings:

3D prints and leaks empty mould high pressure sand blowing facility: the sand box comprises a sand box, a base, an air leakage sand core mould, a 3D printer, a steel wire hose, a high-pressure air pipe, a recovery tank, a centrifugal fan, a high-speed motor, an air storage tank, a high-pressure air pump, an air pump motor, an air valve, a power line and a distribution box;

The sand box is cuboid, the top of the sand box is open, the H-shaped 3D printer is arranged on the sand box, the cuboid base is arranged at the bottom of the sand box, and the polygonal combined hollow sand core mold is arranged on the sand base;

The recovery tank consists of two parts, the upper surface of the recovery tank is conical, the lower surface of the recovery tank is cylindrical, the top end of the recovery tank is provided with a disc-shaped centrifugal fan, an inlet of the fan is communicated with the recovery tank, the inside of the fan is provided with a disc-shaped centrifugal fan, the upper surface of the fan is provided with a cylindrical high-speed motor connected with the centrifugal fan, the side surface of the recovery tank is provided with a cylindrical steel wire hose, the upper surface of the steel wire hose is provided with a tubular high-pressure air pipe, the top end of the high-pressure air pipe is connected with an inlet of a Z-shaped air valve, the front end of the Z-shaped air valve is arranged in the middle position inside the front end of the steel wire;

The air storage tank is cylindrical, the right side of the air storage tank is connected with the tail end of the high-pressure air pipe, a cylindrical high-pressure air pump and a cylindrical air pump motor are arranged on the air storage tank, an outlet of the air pump is connected with the inside of the air storage tank through a pipeline, a middle shaft of the high-pressure air pump is connected with a middle shaft of the air pump motor, and a supporting wheel is arranged at the bottom of the air storage tank;

The distribution box is cuboid and is connected with the high-speed motor and the air pump motor through power lines.

the operation method of the high-pressure sand blowing facility for the 3D printing of the leaky mold is characterized in that when the facility is used, the base is placed at the bottom of the sand box, printing data are input into the 3D printer, the sand spreader and the 3D printer are started simultaneously, the foot layer of the sand spreader spreads sand to the bottom of the sand box, the 3D printer sprays resin glue on casting sand paved at the bottom of the sand box according to the input data foot layer, the 3D printer and the sand spreader return after printing is finished, the sand box is placed for 3-4 hours, the resin glue is dried naturally, the sand sucker sucks all casting sand at the edge of the sand box to completely expose the leaky mold for 3D printing, at the moment, a worker opens the high-pressure air pump motor and the centrifugal fan motor through the distribution box, the high-pressure air pump rapidly compresses air into the air storage tank under the driving of the motor, the high-speed motor drives the centrifugal fan to rotate at high speed to suck the air in the recovery tank, The recovery tank sucks air around an injection pipe at the front end of a high-pressure air pipe into the recovery tank through a steel wire hose, a worker holds the front end of the steel wire hose, the injection pipe is aligned to a void part of a void sand core mould, an air valve switch is pressed, high-pressure air compressed in an air storage tank is sprayed out from the injection pipe at a high speed through the high-pressure air pipe and directly impacts the casting sand at the void part of the mould, the casting sand which is not sprayed with resin glue by a 3D printer at the void part of the sand core mould belongs to a loose state and is rapidly dispersed under the impact of high-speed airflow, at the moment, the air sucked into the recovery tank can together carry the dispersed casting sand to be sucked into the recovery tank from an inlet of the steel wire hose through the steel wire hose, the air is gradually increased after entering the recovery tank, the air flow is reduced, the casting sand falls into the tank bottom due to the weight of the air and flows out of a centrifugal, And after the mold is completely cleaned, the hanging arm is used for lifting the leaky sand core mold together with the base to a casting sand box for processing and casting, and the high-pressure air flow basically cannot damage the sand core mold and can forcibly blow out the casting sand at the leaky bend part, so that the effect of cleaning the inside and the outside is achieved.