CN214356915U - Inert gas protection powder vacuum packaging machine - Google Patents

Abstract

The utility model provides an inert gas protection powder vacuum packaging machine, it has solved 3D and has printed the inconvenient scheduling problem of encapsulation operation under the metal powder vacuum environment, it is including the packing box that has the work cabin, packing box one side is provided with and imports and exports with inside work cabin intercommunication and open closed powder, the work cabin intercommunication has the evacuation pipe-line system that takes the work cabin inside gas out, the work cabin intercommunication has the air supply pipe-line system of inputing inert gas or air towards the work cabin in, be provided with the inside relative transparent observation window with the work cabin on the packing box, the packing box opposite side is provided with at least one open closed operation mouth, operation mouth and work cabin intercommunication and operation mouth inboard are connected with the interior anti-static gloves that cut off of operation mouth. The utility model has the advantages of convenient operation, good metal powder protection effect and the like.

Description

Inert gas protection powder vacuum packaging machine

Technical Field

The utility model belongs to the technical field of vacuum packaging, concretely relates to inert gas protects powder vacuum packaging machine.

Background

3D printing is typically achieved using digital technology material printers. The method is often used for manufacturing models in the fields of mold manufacturing, industrial design and the like, and is gradually used for directly manufacturing some products, and parts printed by the technology are already available. The most common form of metallic 3D printing is powder bed melting. Such processes use a heat source to melt powder particles together, layer by layer, until the article is finished. The powder bed melting system has a heat source and a powder distribution control mechanism. The particle size, sphericity and purity of the metal powder used for 3D printing can affect the fluidity of the metal powder, and the fluidity is an important index for the quality of the metal powder for 3D printing, and can directly affect the forming quality of a 3D printing workpiece. The metal powder for 3D printing can not directly expose in the air, because the air contains gas such as steam, oxygen, nitrogen gas, hydrogen, and metal powder easily takes place chemical reaction with these gases to influence metal powder's purity, steam can make metal powder adsorb the caking agglomeration simultaneously, thereby influences metal powder's mobility, can directly influence 3D and print work piece shaping quality finally, so 3D prints and uses the storage of metal powder, the transportation environment is very important.

In order to control the content of gases such as water vapor, oxygen, nitrogen and hydrogen in the storage environment of the metal powder for 3D printing, an inert gas protection powder vacuum packaging machine is developed.

Disclosure of Invention

The utility model aims at the above problem, provide a reasonable in design, can effectively protect 3D to print metal powder's inert gas protection powder vacuum packaging machine.

In order to achieve the above purpose, the utility model adopts the following technical proposal: this inert gas protection powder vacuum packaging machine, including the packing box that has the work cabin, packing box one side is provided with and imports and exports with inside work cabin intercommunication and open closed powder, the work cabin intercommunication has the evacuation pipe-line system that takes the work cabin inside gas out, the work cabin intercommunication has the air supply pipe-line system of inputing inert gas or air towards the work cabin, be provided with the transparent observation window relative with the work cabin inside on the packing box, the packing box opposite side is provided with at least one open closed operation mouth, operation mouth and work cabin intercommunication and operation mouth inboard are connected with the antistatic gloves that cut off the inside and outside of operation mouth. The powder jar of having adorned 3D and printing metal powder sends into the work cabin, it fills in inert gas through air supply pipe system again to take out the vacuumed back under the evacuation pipe-line system effect, then externally through preventing that static gloves are manual to be equipped with 3D and print the powder jar of metal powder and encapsulate the operation, thereby guarantee to be full of inert gas protection in the powder jar, under inert gas's protection, 3D prints and can not oxidized with metal powder, 3D prints metal powder and can save for a long time, can guarantee 3D well and print the shaping quality.

In the inert gas protection powder vacuum packaging machine, the packaging box body is internally provided with an installation cavity for installing the vacuum pumping pipeline system and the air supply pipeline system, the installation cavity is arranged below the working cabin and is provided with an openable split door in front of the installation cavity, and the universal wheel assembly and the support are arranged below the packaging box body. The mounting cavity is used for mounting the vacuum pumping pipeline system and the air supply pipeline system and providing a certain operating platform.

In the inert gas protection powder vacuum packaging machine, the vacuum pumping pipeline system comprises a vacuum pump arranged in the installation cavity, the vacuum pump is communicated with the working cabin through the vacuum pipe, and the vacuum pump is communicated with an on-off valve arranged in the installation cavity. The vacuum pipe is provided with an on-off valve which is used for connecting and disconnecting the communication state of the vacuum pump and the working cabin, and the on-off valve is controlled by the electromagnetic valve to open and close. The vacuumizing pipeline system is used for pumping out air or inert gas in the working cabin, forming a vacuum environment or recycling the inert gas and preventing the influence of overhigh concentration of the inert gas on a human body after the working cabin is opened.

In the above inert gas-protected powder vacuum packaging machine, the gas supply pipeline system includes an inert gas supply assembly and an air supply assembly. And the inert gas supply assembly and the air supply assembly in the gas supply pipeline system work independently to respectively fill air and inert gas.

In the above vacuum packaging machine for inert gas powder protection, the inert gas supply assembly comprises an inert gas inlet pipe, the inert gas inlet pipe is communicated with the working chamber, and the inert gas inlet pipe is provided with an electromagnetic valve. And after the working cabin is pumped to negative pressure by the vacuum pumping pipeline system, the inert gas is injected, the powder tank is sealed after the internal pressure and the external pressure of the powder tank are balanced and the oxygen concentration is reduced to a certain range, so that the pressure in the working cabin is consistent with the external atmospheric pressure after the inert gas is injected, and the phenomenon that the powder tank is easy to leak gas or cannot be opened due to pressure difference is avoided. The powder packing operation can produce the dust cloud when carrying out the powder packing operation in the inclosed work cabin of inert gas protection powder vacuum packaging machine, if the ignition point of powder is lower, dust concentration reaches a definite value, when having the air again in the work cabin, has just so formed explosive dust environment, very easily takes place the burning explosion accident, and the air in inert gas replacement work cabin can effectually avoid the dust explosion risk.

In the above vacuum packaging machine for inert gas protection powder, the air supply assembly comprises an air inlet pipe, the air inlet pipe is communicated with the working chamber, and the air inlet pipe is provided with an electromagnetic valve and a filter. When the powder inlet and outlet need to be opened after the packaging is finished, the vacuumizing pipeline system exhausts air, then the air supply assembly charges air towards the working cabin, the oxygen content and the pressure reach set standard values after the circulation is carried out for multiple times, the powder inlet and outlet are manually opened, and the packaged powder tank is taken out.

In the inert gas protection powder vacuum packaging machine, a control box is arranged in the installation cavity and is connected with the electromagnetic valve, the on-off valve and the vacuum pump. The control box is used for coordinating the work of the electromagnetic valve, the on-off valve and the vacuum pump. The control box controls the starting and stopping of the vacuum pump and the on-off of the electromagnetic valve, and monitors the oxygen content and the pressure so as to finish the actions of vacuumizing, argon filling, air intake and exhaust and the like.

In the inert gas protection powder vacuum packaging machine, the powder inlet and outlet comprises a protruding inlet and outlet frame opening opposite to the packaging box body, one side of the outer part of the inlet and outlet frame opening is rotatably connected with a cabin door for sealing the inlet and outlet frame opening, and a foldable display screen is arranged above the powder inlet and outlet and is mainly used for displaying parameters and states of the whole machine and equipment operation buttons. One side of the outside of the operation opening is rotatably connected with a cover body for sealing the operation opening. The powder tank in the working cabin is operated through the antistatic gloves in the operation port.

In the inert gas protection powder vacuum packaging machine, the outer part above the packaging box body is attached and distributed with grid-shaped reinforcing strips, the reinforcing strips are opposite to the working cabin, and the reinforcing strips are hollow square cylinders. Because the working cabin is in a vacuum state, the packaging box body is subjected to pressure exerted by external atmospheric pressure, and the reinforcing strips prevent the box body from deforming.

In the inert gas protection powder vacuum packaging machine, the upper end of the packaging box body is provided with a pressure sensor, an oxygen sensor and a humidity sensor which are communicated with the internal working cabin. The pressure sensor, the oxygen sensor and the humidity sensor are used for detecting the air pressure, the oxygen content and the environment humidity in the working chamber, so that whether the working chamber door is opened or closed or not and powder packaging is carried out or not is judged.

Compared with the prior art, the utility model has the advantages of: the air filled in the working cabin, the powder tank and the metal powder can be quickly pumped out, and the inert gas is quickly filled in the working cabin, the powder tank and the metal powder, so that the metal powder is prevented from being oxidized and absorbing moisture in the air, and the purity of the metal powder can be effectively ensured; the inert gas does not react with dust cloud formed during powder packaging, and meanwhile, the antistatic operation gloves are adopted, so that the risk of dust explosion during powder packaging of the working cabin can be effectively prevented; the pressure sensor, the oxygen sensor and the humidity sensor are arranged to monitor the pressure, the oxygen content and the humidity, and automatically complete actions such as vacuumizing, filling inert gas and the like, so that the pressure, the oxygen content and the humidity in the working cabin are in a set range in the whole packaging process, and the equipment is safer and more reliable; after the packaging is finished, the inert gas in the working cabin can be recycled through the vacuum pumping pipeline system, so that the waste of the inert gas and the influence on the breathing of a human body when the door is opened are reduced; and a perspective observation window is arranged, so that people can observe the conditions in the cabin in real time, and the powder packaging operation is convenient to carry out.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of another viewing angle of the present invention;

fig. 3 is a schematic structural view of another viewing angle of the present invention;

in the figure, a packaging box body 1, a working cabin 11, an installation cavity 12, a split door 13, a universal wheel assembly 14, a support 15, a control box 16, a reinforcing strip 17, a powder inlet and outlet 2, an inlet and outlet frame 21, a cabin door 22, a foldable display screen 23, a vacuum pumping pipeline system 3, a vacuum pump 31, a vacuum pipe 32, an on-off valve 33, an electromagnetic valve 34, an air supply pipeline system 4, an inert gas supply assembly 41, an air supply assembly 42, an inert gas inlet pipe 43, an air inlet pipe 44, a filter 45, a transparent observation window 5, an operation opening 6, a cover body 61, a pressure sensor 7, an oxygen sensor 8 and a humidity sensor 9 are arranged.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-3, the vacuum powder packaging machine with inert gas protection comprises a packaging box body 1 with a working chamber 11, wherein one side of the packaging box body 1 is provided with a powder inlet and outlet 2 which is communicated with the internal working chamber 11 and can be opened and closed, the working chamber 11 is communicated with a vacuum pipeline system 3 which pumps the internal gas of the working chamber 11, the working chamber 11 is communicated with an air supply pipeline system 4 which inputs inert gas or air into the working chamber 11, the packaging box body 1 is provided with a transparent observation window 5 which is opposite to the internal part of the working chamber 11, the other side of the packaging box body 1 is provided with two operation ports 6, the operation ports 6 are communicated with the working chamber 11, and the inner sides of the operation ports 6 are connected with antistatic gloves which partition the internal part and the external part of the operation ports 6. And after the powder inlet and outlet 2 is opened, the powder tank filled with the 3D printing powder is placed into the working cabin 11 for packaging. The vacuumizing pipeline system 3 is started to vacuumize the working cabin 11, the air supply pipeline system 4 injects inert gas towards the working cabin 11, when the pressure in the working cabin 11 is consistent with the external atmospheric pressure, and the oxygen concentration and the environmental humidity are reduced to a set range, the powder tank is packaged, the operation opening 6 is opened at the moment, and the hands of an operator stretch into the anti-static gloves to manually complete the powder tank packaging. Then the vacuumizing pipeline system 3 is started to pump out inert gas and the air is flushed into the vacuumizing pipeline system 4, and when the internal and external air pressures are balanced and the oxygen content is increased to a set value, the powder inlet and outlet 2 is opened to take out the metal powder after the packaging is finished.

Specifically, an installation cavity 12 for installing the vacuum pumping pipeline system 3 and the air supply pipeline system 4 is arranged in the packaging box 1, the installation cavity 12 is arranged below the working chamber 11, an openable and closable split door 13 is arranged in front of the installation cavity 12, and a universal wheel assembly 14 and a support 15 are arranged below the packaging box 1. The packaging box body 1 can move or move, and the mounting cavity 12 leaves enough space for mounting the parts such as the vacuum-pumping pipeline system 3, the air supply pipeline system 4 and the like.

Further, the vacuum pumping piping system 3 includes a vacuum pump 31 installed in the installation cavity 12, the vacuum pump 31 is communicated with the working chamber 11 through a vacuum pipe 32, an on-off valve 33 for connecting and disconnecting the vacuum pump 31 and the working chamber 11 is installed on the vacuum pipe 32, and the opening and closing of the on-off valve 33 is controlled by a solenoid valve 34. The vacuum pump 31 pumps air or inert gas out of the working chamber 11, after the pressure sensor 7 detects that the vacuum pressure in the working chamber 11 reaches a set value, the vacuum pump 31 stops working, the gas supply pipeline system 4 is filled with the inert gas, and the circulation is repeated for many times until the oxygen content and the humidity in the working chamber 11 are reduced to the set value, and the gas washing process in the working chamber 11 is completed.

Further, the gas supply pipeline system 4 includes an inert gas supply assembly 41 and an air supply assembly 42. When the working chamber 11 is in a vacuum environment, the air supply pipeline system 4 is filled with air or inert gas toward the interior of the working chamber 11 under the negative pressure.

Further, the inert gas supply assembly 41 includes an inert gas inlet pipe 43, the inert gas inlet pipe 43 is communicated with the work chamber 11, and the inert gas inlet pipe 43 is equipped with the electromagnetic valve 34. The electromagnetic valve 34 controls the on-off of the inert gas inlet pipe 43, and the inert gas inlet pipe 43 extends to the outside of the packaging box body 1.

In addition, the air supply assembly 42 includes an air inlet pipe 44, the air inlet pipe 44 communicates with the work compartment 11, and the air inlet pipe 44 is equipped with the electromagnetic valve 34 and the filter 45. The vacuumizing pipeline system 3 vacuumizes the working cabin 11 until the internal air pressure is reduced to a set value, the vacuum pump 31 stops working, the air supply assembly 42 charges air towards the inside of the working cabin 11, and the circulation is repeated for many times until the oxygen content and the internal air pressure reach the set value, and the ventilation process is completed.

Meanwhile, a control box 16 is arranged in the mounting cavity 12, and the control box 16 is connected with an electromagnetic valve 34, an on-off valve 33 and a vacuum pump 31. The control box 16 controls the operation of the electromagnetic valve 34, the on-off valve 33, and the vacuum pump 31. The control box 16 controls the on-off of the vacuum pump 31 and the on-off of the electromagnetic valve 34, and monitors the oxygen content and the pressure to complete the actions of vacuumizing, filling argon, air intake and exhaust and the like.

The powder inlet/outlet 2 includes a frame inlet/outlet 21 protruding from the packing box 1, a door 22 for closing the frame inlet/outlet 21 is rotatably connected to one side of the frame inlet/outlet 21, and a cover 61 for closing the operation port 6 is rotatably connected to one side of the operation port 6. The powder inlet and outlet 2 and the operation opening 6 are in a closed state during air suction and inflation, and are opened after the internal and external pressures of the powder tank in the working chamber 11 are balanced.

Obviously, the outside of the upper part of the packaging box body 1 is attached and distributed with grid-shaped reinforcing strips 17, the reinforcing strips 17 are opposite to the working cabin 11, and the reinforcing strips 17 are hollow square cylinders. The reinforcing strips 17 are distributed over and laterally outside the cabin 11 to improve the deformation resistance thereof.

Preferably, the upper end of the packaging box 1 is provided with a pressure sensor 7, an oxygen sensor 8 and a humidity sensor 9 which are communicated with the inner workroom 11. According to the air pressure and oxygen concentration values collected by the pressure sensor 7 and the oxygen sensor 8, the corresponding control box 16 starts a washing or ventilation process through the electromagnetic valve 34, the diaphragm valve 33 and the vacuum pump 31.

In summary, the principle of the present embodiment is: after the tank body filled with the 3D printing powder is placed in the working chamber 11, the tank body is vacuumized by the vacuumizing pipeline system 3, then the inert gas is filled in the air supply pipeline system 4 until the internal oxygen concentration and the humidity in the working chamber 11 are reduced to set values, an operator carries out powder tank packaging through the operation opening 6 and the anti-static gloves outside the packaging box body 1, the operation is observed through the transparent observation window 5, the inert gas is sequentially pumped out and filled with air after the packaging is finished, after the pressure in the working chamber 11 is consistent with the external atmospheric pressure, the cabin door 22 of the powder inlet/outlet 2 is opened, and the packaged metal powder is taken out.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the packaging box 1, the working chamber 11, the mounting cavity 12, the split door 13, the universal wheel assembly 14, the support 15, the control box 16, the reinforcing bar 17, the powder inlet/outlet 2, the frame inlet/outlet 21, the cabin door 22, the foldable display screen 23, the vacuum pumping pipe system 3, the vacuum pump 31, the vacuum pipe 32, the on-off valve 33, the electromagnetic valve 34, the air supply pipe system 4, the inert gas supply assembly 41, the air supply assembly 42, the inert gas inlet pipe 43, the air inlet pipe 44, the filter 45, the transparent viewing window 5, the operation opening 6, the cover 61, the pressure sensor 7, the oxygen sensor 8, the humidity sensor 9, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. An inert gas protection powder vacuum packaging machine comprises a packaging box body (1) with a working cabin (11), it is characterized in that one side of the packing box body (1) is provided with a powder inlet and outlet (2) which is communicated with the internal working cabin (11) and can be opened and closed, the working cabin (11) is communicated with a vacuum pumping pipeline system (3) for pumping the gas in the working cabin (11), the working cabin (11) is communicated with an air supply pipeline system (4) which inputs inert gas or air into the working cabin (11), a transparent observation window (5) opposite to the interior of the working cabin (11) is arranged on the packaging box body (1), the other side of the packaging box body (1) is provided with two openable operation openings (6), the operation opening (6) is communicated with the working cabin (11), and the inner side of the operation opening (6) is connected with antistatic gloves for separating the inside and the outside of the operation opening (6).

2. The inert gas protection powder vacuum packaging machine according to claim 1, characterized in that a mounting cavity (12) for mounting the vacuum pumping pipeline system (3) and the air supply pipeline system (4) is arranged in the packaging box body (1), the mounting cavity (12) is arranged below the working chamber (11), an openable split door (13) is arranged in front of the mounting cavity (12), and a universal wheel assembly (14) and a support (15) are arranged below the packaging box body (1).

3. The inert gas protection powder vacuum packaging machine according to claim 2, wherein the vacuum pumping pipeline system (3) comprises a vacuum pump (31) installed in the installation cavity (12), the vacuum pump (31) is communicated with the working chamber (11) through a vacuum pipe (32), an on-off valve (33) for connecting and disconnecting the vacuum pump (31) and the working chamber (11) is installed on the vacuum pipe (32), and the opening and closing of the on-off valve (33) are controlled by a solenoid valve (34).

4. The inert gas protected powder vacuum packaging machine according to claim 3, wherein said gas supply line system (4) comprises an inert gas supply unit (41) and an air supply unit (42).

5. The vacuum packaging machine for inert gas shielding powder according to claim 4, wherein the inert gas supply assembly (41) comprises an inert gas inlet pipe (43), the inert gas inlet pipe (43) is communicated with the work chamber (11), and the inert gas inlet pipe (43) is provided with the electromagnetic valve (34).

6. The vacuum packaging machine for inert gas shielding powder according to claim 5, wherein the air supply assembly (42) comprises an air inlet pipe (44), the air inlet pipe (44) is communicated with the work chamber (11), and the air inlet pipe (44) is provided with an electromagnetic valve (34) and a filter (45).

7. The inert gas shielding powder vacuum packaging machine according to claim 6, wherein a control box (16) is arranged in the mounting cavity (12), and the control box (16) is connected with the electromagnetic valve (34), the on-off valve (33) and the vacuum pump (31).

8. The inert gas powder vacuum packaging machine according to claim 1, wherein the powder inlet/outlet (2) comprises an inlet/outlet frame opening (21) protruding relative to the packaging box body (1), one side of the outer part of the inlet/outlet frame opening (21) is rotatably connected with a cabin door (22) for closing the inlet/outlet frame opening (21), a foldable display screen (23) is arranged above the powder inlet/outlet (2), and one side of the outer part of the operation opening (6) is rotatably connected with a cover body (61) for closing the operation opening (6).

9. The inert gas powder protection vacuum packaging machine according to claim 1, wherein a grid-shaped reinforcing strip (17) is attached and distributed outside the upper part of the packaging box body (1), the reinforcing strip (17) is opposite to the working cabin (11), and the reinforcing strip (17) is a hollow square cylinder.

10. The inert gas powder vacuum packaging machine according to claim 1, characterized in that the upper end of the packaging box body (1) is provided with a pressure sensor (7), an oxygen sensor (8) and a humidity sensor (9) which are communicated with the inner working chamber (11).

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