CN113245564A - Local inert gas protection system - Google Patents
Local inert gas protection system Download PDFInfo
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- CN113245564A CN113245564A CN202110654056.9A CN202110654056A CN113245564A CN 113245564 A CN113245564 A CN 113245564A CN 202110654056 A CN202110654056 A CN 202110654056A CN 113245564 A CN113245564 A CN 113245564A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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Abstract
The application discloses local inert gas protection system includes: the protective frame is arranged on the periphery of the printing substrate, and the minimum height of the protective frame is greater than or equal to the height of the component so as to form a protective air cavity covering the working area of the printing substrate; an airflow channel is arranged inside the protection frame, airflow inlets are arranged on the periphery of the inner side of the protection frame, airflow outlets are arranged on the outer side of the protection frame, the airflow inlets, the airflow channel and the airflow outlets are sequentially communicated, and the airflow outlets are connected with an air circulation system; the protective gas output mechanism is fixedly arranged relative to the cladding head and used for conveying inert gas to the protective gas cavity, and the gas circulating system is used for continuously pumping away the gas in the protective gas cavity so as to form inert gas flow in the protective gas cavity. The local inert gas protection system can perform local dynamic inert gas protection on a printing work area of the 3D printing equipment, avoids the problem that the air needs to be re-washed after the airtight space is opened, and improves the work efficiency.
Description
Technical Field
The invention belongs to the technical field of metal 3D printing, and particularly relates to a local inert gas protection system.
Background
In the metal 3D printing device, in order to avoid the component from being seriously oxidized due to contact with air in the forming process and influencing the quality of the component, an inert gas protection system is required to be arranged. The existing inert gas protection system is integrally sealed, a closed cavity such as a laser room is arranged, metal 3D printing equipment is placed in the closed cavity, and inert gas is injected into the closed cavity to achieve protection.
With the gradual maturity of 3D printing technology, the size of component is also bigger and bigger, and research personnel in the trade aim at the metal 3D printing of large-scale work piece with the eye. However, for a corresponding large-size printing device, the design of the integral seal is time-consuming and gas-consuming, the oxygen content can be reduced after a long time, once manual intervention is needed in the device, the sealed cavity needs to be re-purged again, and the working efficiency is seriously low.
Accordingly, the prior art is in need of improvement and development.
Disclosure of Invention
An object of the embodiment of the application is to provide a local inert gas protection system, can carry out local dynamic inert gas protection to 3D printing apparatus's printing work area, avoid opening the problem that need wash gas again behind the airtight space, improve work efficiency.
In order to solve the technical problem, the local inert gas protection system provided by the embodiment of the application is arranged between a cladding head and a printing substrate of a 3D printing device, and comprises:
a protective frame provided at an outer periphery of the printing substrate and having a minimum height greater than or equal to a height of a member to form a protective air chamber covering a working area of the printing substrate; the protection frame is internally provided with an airflow channel, the circumference of the inner side of the protection frame is provided with an airflow inlet, the outer side of the protection frame is provided with an airflow outlet, the airflow inlet, the airflow channel and the airflow outlet are sequentially communicated, and the airflow outlet is connected with an air circulation system;
the protective gas output mechanism is fixedly arranged relative to the cladding head, the protective gas output mechanism is used for conveying inert gas to the protective gas cavity, and the gas circulating system is used for continuously pumping away the gas in the protective gas cavity so as to form inert gas flow in the protective gas cavity.
The local inert gas protection system of this application forms the protection gas cavity in the periphery of printing the base plate through the protecting frame, when inert gas's air current constantly blows this protection gas cavity, can carry out dynamic washing gas to the protection gas cavity, guarantee that print work is in inert atmosphere, through carrying out local dynamic inert gas protection to 3D printing apparatus's print work region, need wash gas again after having avoided opening confined space the problem, improved work efficiency.
Furthermore, the inner side of the protective frame is provided with a circumferential open slot to form the airflow inlet.
Furthermore, the number of the airflow outlets is at least two, and the at least two airflow outlets are distributed on the outer side of the periphery of the protection frame.
Further, the local inert gas protection system also comprises an oxygen sensor, wherein the oxygen sensor is arranged in the protection gas cavity and used for detecting the oxygen content in the protection gas cavity.
Further, the local inert gas protection system also comprises a controller, wherein the controller is used for adjusting the conveying flow of the inert gas and the air volume of the gas circulation system by the protective gas output mechanism according to the detection value of the oxygen sensor so as to maintain the oxygen content in the protective gas cavity within a preset range.
Further, the inert gas is discharged above the printing substrate, and the gas flow inlet, the gas flow passage, and the gas flow outlet are provided at a lower portion of the protective frame.
Furthermore, the protection frame comprises a detachable and connected air washing frame and a protection enclosing frame, the protection enclosing frame is arranged above the air washing frame, and the air inlet, the air flow channel and the air flow outlet are arranged on the air washing frame.
Furthermore, the protective enclosure frame comprises four connecting columns and four end-to-end connecting partition plates, the adjacent two partition plates are connected through any connecting column, and the connecting columns are provided with clamping grooves for clamping the partition plates.
Furthermore, the bottom of the connecting column is provided with a first connecting part, the top of the air washing frame is provided with a corresponding second connecting part, the first connecting part is connected with the second connecting part in an aligning way and corresponds to the clamping groove, and the corresponding extending groove is formed in the clamping groove, so that the bottom of the partition plate is attached to the top of the air washing frame.
Furthermore, the four end-to-end baffles are respectively a front baffle, a rear baffle, a left baffle and a right baffle, the height of the front baffle is smaller than that of the rear baffle, and the top of the left baffle and the top of the right baffle are obliquely arranged from the front baffle to the rear baffle.
The utility model provides a local inert gas protection system, form the protection gas cavity in the periphery of printing substrate through the protective frame, in order to carry out the deposit of component and print, through setting up the inlet airflow of intercommunication, airflow channel and gas outflow, under gas circulation system's drive, the inert gas who constantly carries from protection gas output mechanism blows through the inlet airflow after the cavity, airflow channel and gas outflow export flow, make the inert gas air current constantly flow through this protection gas cavity, can carry out dynamic washing gas to the protection gas cavity, form a local inert gas protected area at protection gas cavity, guarantee that print work is in inert atmosphere, carry out local dynamic inert gas protection through the print work area to 3D printing apparatus, the problem that need wash gas again after having avoided opening airtight space, and the work efficiency is improved.
Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
Fig. 1 is a schematic structural diagram of a local inert gas protection system according to an embodiment of the present disclosure.
Fig. 2 is a schematic cross-sectional view of a gas cleaning frame of a local inert gas protection system according to an embodiment of the present disclosure.
Fig. 3 is a partial schematic view of a local inert gas protection system according to an embodiment of the present disclosure.
Fig. 4 is a top view of a local inert gas shielding system according to an embodiment of the present application.
Fig. 5 is an exploded view of a heating unit of a local inert gas protection system according to an embodiment of the present disclosure.
FIG. 6 is a schematic structural diagram of a heat shield of a localized inert gas shielding system according to an embodiment of the present disclosure.
Fig. 7 is another schematic cross-sectional view of a purge frame of a local inert gas protection system according to an embodiment of the present disclosure.
Description of reference numerals: 100. printing a substrate; 200. a protective frame; 210. a gas washing frame; 211. a second connecting portion; 2111. an extension groove; 220. a protective enclosure frame; 221. connecting columns; 2211. a card slot; 2212. a first connection portion; 222. a partition plate; 222a, a front baffle plate; 222b, a rear partition plate; 222c, a left baffle plate; 222d, a right baffle plate; 230. an airflow inlet; 240. an air flow channel; 250. an airflow outlet; 260. an L-shaped structural member; 270. a connecting table; 400. a heating unit; 410. a heat conducting plate; 420. a heating member; 430. a heat insulation plate; 431. a main tank; 432. supporting a groove; 433. a wire hole; 435. a wire outlet; 436. a wire channel; 440. a heat insulating strip; 500. a work bench.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
As shown in fig. 1, the local inert gas protection system of the present invention is disposed between a cladding head of a 3D printing apparatus and a printing substrate 100, and includes:
a protective frame 200, wherein the protective frame 200 is framed on the periphery of the printing substrate 100, and the minimum height of the protective frame 200 is greater than or equal to the height of a component, so as to form a protective air cavity covering the working area of the printing substrate 100; an airflow channel 240 is arranged inside the protection frame 200, an airflow inlet 230 is arranged on the circumference of the inner side of the protection frame 200, an airflow outlet 250 is arranged on the outer side of the protection frame 200, the airflow inlet 230, the airflow channel 240 and the airflow outlet 250 are sequentially communicated, and the airflow outlet 250 is connected with an air circulation system;
the protective gas output mechanism is fixedly arranged relative to the cladding head, the protective gas output mechanism is used for conveying inert gas to the protective gas cavity, and the gas circulating system is used for continuously pumping away the gas in the protective gas cavity so as to form inert gas flow in the protective gas cavity.
In the specific application, the protective frame 200 and the printing substrate 100 are coplanar and fixed on the workbench 500 together, the protective frame 200 is framed on the periphery of the printing substrate 100, the components are constructed or repaired by metal deposition on the printing substrate 100, the cladding head of the 3D printing device can be carried above the printing substrate 100 by a mechanical arm to perform metal cladding deposition, a protective gas cavity is formed on the periphery of the printing substrate 100 by the protective frame 200, during operation, inert gas is continuously blown into the protective gas cavity from the protective gas output mechanism, the protective gas output mechanism is fixedly arranged relative to the cladding head, so that the protective gas output mechanism can move along with the movement of the cladding head, the inert gas is uniformly delivered to each area of the protective gas cavity, and the gas circulation system operates to provide airflow power, so that the gas in the protective gas cavity passes through the airflow inlet 230 and the airflow channel 240, the printing ink is discharged from the air outlet 250, stable inert gas flow is formed in the protective gas cavity, the inert gas flow continuously flows through the protective gas cavity, dynamic gas washing can be performed on the protective gas cavity, air is taken away to reduce oxygen content, a local inert gas protection area is formed in the protective gas cavity, local dynamic inert gas protection is performed on the printing work area, the problem that gas washing needs to be performed again after an airtight space is opened is avoided, and work efficiency is improved. When the gas outlet of the protective gas output mechanism is arranged close to the cladding head, a stronger and more stable protective gas atmosphere can be formed near a molten pool where metal is deposited. Specifically, the height of the protective frame 200 is adjusted according to the height of the specific component, and the minimum height of the protective frame 200 is kept to be greater than or equal to the height of the component, so as to ensure that the component is placed in the local dynamic inert gas protection.
Specifically, the flow rate of the inert gas and the air volume of the gas circulation system may be adjusted according to actual requirements, so that the shielding gas output mechanism outputs the inert gas at a predetermined flow rate at a certain transmission flow rate, and the gas circulation system operates at a certain operating frequency to provide a predetermined air volume, and the transmission flow rate and the air volume may be specifically set by a controller.
Specifically, the shielding gas output mechanism (not shown) may be integrated into a cladding head (not shown), for example, a cladding head with a gas pipe joint in the prior art, a device for providing an inert gas in the prior art is adopted, and the device is communicated with the gas pipe joint, so that the inert gas is input into the shielding gas cavity from the gas pipe joint of the cladding head; the inert gas protection device in the prior art can also be adopted, and a gas output pipeline of the inert gas protection device is fixedly arranged relative to the cladding head through a connecting structure, for example, the gas output pipeline is fixed on a mechanical arm for carrying the cladding head, or is directly fixed on the cladding head, and can also be carried through an additional mechanical structure such as a mechanical arm and the like, so that the gas output pipeline and the cladding head keep a relatively fixed position state. Specifically, argon gas may be used as the inert gas. Specifically, the gas circulation system (not shown) adopts the existing technical means, such as a fan, and sets the air volume of the fan by setting the operating frequency of the fan. Preferably, the gas circulation system may include a fan and a filter, and in a specific application, the gas flow from the protective gas chamber can take away smoke generated in the printing process, and the filter can purify the gas flow passing through the fan.
Specifically, the shape of the protection frame 200 corresponds to the shape of the printing substrate 100, so that the protection gas cavity can form a good local dynamic gas protection for the printing work area based on the printing substrate 100, for example, when the printing substrate 100 is circular, the protection frame 200 may be enclosed in a circle, specifically, in this embodiment, the printing substrate 100 is rectangular, and the protection frame 200 is enclosed in a rectangle. Specifically, the protection frame 200 may be directly screwed with the workbench 500, as shown in fig. 1 and 7, and particularly to the present embodiment, as a preferred embodiment, the protection frame 200 is provided with an L-shaped structural member 260 for being connected with the workbench 500, one side wall of the L-shaped structural member 260 is connected with the bottom of the protection frame 200, and the other side wall of the L-shaped structural member 260 is connected with the side wall of the workbench 500. Specifically, the L-shaped structural member 260 and the protection frame 200 or the work table 500 may be connected by a fastener such as a bolt. Preferably, the bottom of the protection frame 200 is provided with a connection platform 270 for installation and connection, so that the connection platform 270 can be perforated to be in threaded connection with the L-shaped structural member 260, thereby avoiding the air tightness of the air flow channel 240 in the protection frame 200 from being damaged. Specifically, the connection platform 270 may be extended from the bottom of the protection frame 200.
In some preferred embodiments, as shown in fig. 2, the inner side of the protection frame 200 is provided with a circumferential open slot to form the airflow inlet 230. Through the technical scheme, the gas in the protective cavity can be carried away from all directions and all directions of the protective cavity for gas washing, so that different areas in the protective cavity have airflow power, uniform dynamic gas washing of all areas in the protective cavity is facilitated, and the balance of the whole oxygen content is promoted.
In some preferred embodiments, there are at least two airflow outlets 250, and the at least two airflow outlets 250 are distributed on the outer circumference of the protection frame 200. Through the technical scheme, the airflow power of the gas circulation system is distributed to the periphery of the protective gas cavity, and uniform dynamic gas washing of each area in the protective gas cavity is further promoted. Specifically, two airflow outlets 250 may be provided, two airflow outlets 250 are oppositely disposed on the protection frame 200, and five airflow outlets 250 may be provided, and are distributed around the protection frame 200 according to specific work requirements. Specifically, according to actual requirements, a plurality of airflow outlets 250 may work simultaneously, or an individual airflow outlet 250 may be selected to work; the plurality of gas flow outlets 250 may be connected to a gas circulation system, or may be connected to the same gas circulation system through separate gas flow pipes.
In some preferred embodiments, the local inert gas protection system further comprises an oxygen sensor (not shown in the figures) disposed in the protective gas cavity for detecting the oxygen content in the protective gas cavity. Through the technical scheme, the staff can know the real-time oxygen content condition in the protection cavity in the working process, and can adjust the working parameters of the equipment in time. Specifically, the oxygen content value detected by the oxygen sensor can be displayed through a display screen.
In some preferred embodiments, the local inert gas protection system further includes a controller, and the controller is configured to adjust a delivery flow rate of the inert gas from the protective gas output mechanism and an air volume of the gas circulation system according to a detection value of the oxygen sensor, so as to maintain an oxygen content in the protective gas cavity within a preset range. Through the technical scheme, the oxygen content in the protective gas cavity can be maintained within the preset range by adjusting the flow of the inert gas and the air quantity of the gas circulation system in real time according to the real-time oxygen content in the protective gas cavity, and stable local dynamic inert gas protection is guaranteed. For example, when the oxygen content is too high, the flow rate of the inert gas and the air volume of the gas circulation system are increased, and when the oxygen content is low, the flow rate of the inert gas and the air volume of the gas circulation system can be appropriately decreased. Specifically, the preset range may be adjusted by the controller according to specific working requirements. In a more preferred embodiment, the oxygen sensors are disposed in plurality and distributed around the inner side of the protection frame 200, so that the oxygen content can be more reasonably adjusted according to the oxygen content of each region in the protection gas cavity, and the protection gas cavity can achieve the best protection effect as a whole.
In some preferred embodiments, the above inert gas is discharged above the printing substrate 100, and the gas flow inlet 230, the gas flow channel 240, and the gas flow outlet 250 are disposed at a lower portion of the protective frame 200. In the concrete application, inert gas is released above the printing substrate 100, namely on the upper part of the protective gas cavity, and by means of the technical scheme, airflow power is formed on the lower part of the protective gas cavity, so that the inert gas which is released by the upper part can flow downwards and deeply penetrate into the protective gas cavity, and comprehensive gas washing and dynamic protection of a corresponding printing work area are facilitated.
In some preferred embodiments, the protection frame 200 includes a washing frame 210 and a protection enclosure 220 detachably connected to each other, the protection enclosure 220 is disposed above the washing frame 210, and the air inlet 230, the air passage 240, and the air outlet 250 are disposed on the washing frame 210. In the concrete application, when printing the component of co-altitude, directly change protection of different height dimensions on protection frame 200 upper portion enclose frame 220 can, the washing frame 210 of lower part need not to change, can save processes such as being connected of air outlet 250 and gas circulation system and with workstation 500 counterpoint connection, through this technical scheme, can be nimble according to the height adjustment of component change protection frame 200, the operation is succinct. Specifically, the connection platform 270 is disposed at the bottom of the air washing frame 210.
Specifically, since the printing substrate 100 is mounted on the worktable 500 coplanar with the protection frame 200 and the top surface of the printing substrate 100 corresponds to the upper portion of the gas washing frame 210, particularly in the present embodiment, the gas flow inlet 230 is disposed above the inner side of the gas washing frame 210.
As shown in fig. 1, in some preferred embodiments, the protective enclosure frame 220 includes four connecting posts 221 and four end-to-end partitions 222, two adjacent partitions 222 are connected by any one of the connecting posts 221, and the connecting posts 221 are provided with card slots 2211 for clamping the partitions 222. In specific application, when the protective enclosure frame 220 is replaced and assembled, the partition 222 is clamped into the corresponding clamping groove 2211 of the connecting column 221, so that the assembly can be completed quickly and conveniently.
As shown in fig. 3, in some preferred embodiments, the bottom of the connection column 221 is provided with a first connection portion 2212, the top of the gas washing frame 210 is provided with a corresponding second connection portion 211, the first connection portion 2212 is connected with the second connection portion 211 in an aligned manner, and a corresponding extension slot 2111 is provided corresponding to the slot 2211, so that the bottom of the partition 222 is attached to the top of the gas washing frame 210. In the concrete application, through first connecting portion 2212 with second connecting portion 211 counterpoints and is connected, accomplishes the protection fast, accurately and encloses the connection between frame 220 and the gas washing frame 210 to make the protection enclose the frame 220 and be connected the back with the gas washing frame 210 through extension slot 2111, the relative face can be laminated, does benefit to and improves the leakproofness between the two. Specifically, the first connection portion 2212 and the second connection portion 211 may have flange structures, so that the protection enclosure frame 220 and the gas washing frame 210 are connected by using threads, and the operation is simple and convenient.
In some preferred embodiments, the four end-to-end partitions 222 are a front partition 222a, a rear partition 222b, a left partition 222c, and a right partition 222d, the height of the front partition 222a is smaller than the height of the rear partition 222b, and the top of the left partition 222c and the top of the right partition 222d are disposed from the front partition 222a to the rear partition 222b in an inclined manner. In the concrete application, the mechanical arm for carrying the cladding head is located on one side of the front partition plate 222a, the height of the front partition plate 222a is smaller than that of the rear partition plate 222b, the mechanical arm can move to the abdication position, and the mechanical arm can drive the cladding head to work in the protective gas cavity conveniently. In particular, in the present embodiment, the minimum height of the protection frame 200 is determined by the height of the front partition 222 a.
In some preferred embodiments, the partition 222 is made of a laser shielding material. In particular, the laser protection material can adopt the existing technical means. Specifically, the scrubbing frame 210 may be a hollow rectangular sheet metal pipe.
As shown in fig. 4, in some preferred embodiments, the local inert gas protection system further includes a heating module disposed in the protection frame 200, on which the printing substrate 100 is disposed, and the heating module is formed by splicing at least two heating units 400. Among this technical scheme, preheat printing substrate 100 through heating module to eliminate the thermal stress that the component formed in-process produced etc. adopt to be spliced by heating unit 400 through heating module, can carry out work according to the corresponding heating unit 400 of the nimble size adjustment of component, can close the heat source to the heating unit 400 that does not need work, energy saving.
As shown in fig. 5, in some preferred embodiments, the heating unit 400 includes a heat conducting plate 410, a heating element 420 and a heat insulating plate 430, the heating element 420 and the heat conducting plate 410 are sequentially disposed from bottom to top, the heat conducting plate 410 is connected to the heat insulating plate 430, and a placement groove for accommodating the heating element 420 is formed on the heat conducting plate 410. Specifically, the heating element 420 is provided in a plurality of numbers, and is distributed on the bottom of the heat conducting plate 410.
As shown in fig. 6 and 7, in some preferred embodiments, a wire channel and a plurality of wire holes 433 are formed at the bottom of the heat shield 430, and the plurality of wire holes 433 correspond to the plurality of heating elements 420, respectively; the wire passing grooves comprise main grooves 431 and a plurality of branch grooves 432, one end of each branch groove 432 is connected with the main groove 431, and the other end of each branch groove 432 extends to a corresponding wire hole 433; the main groove 431 is disposed at one end of the heat insulation plate 430, and an electric wire outlet 435 is disposed at an edge of the main groove, and a through electric wire channel 436 is correspondingly disposed on the protection frame 200 corresponding to the electric wire outlet 435 of each heat insulation plate 430. In a specific application, the wires of each heating unit 400 extend into the protective frame 200 through the corresponding wire channel 436, then extend into the corresponding main groove 431 through the wire outlet 435, extend to the branch grooves 432 through the main groove 431, finally extend to the wire holes 433, extend to the top of the heat insulation plate 430 through the corresponding wire holes 433, and are connected with the corresponding heating members 420, and the wires are fixedly arranged along the main groove 431 and the branch grooves 432, so that a plurality of wires are orderly arranged at the bottom of the heating unit 400, working interference among the wires is avoided, and the wires are orderly led out of the local inert gas protection system, and the use safety of the device is improved in the case of printing on the movable workbench 500. Specifically, the conductive posts can be made of conductive materials known in the art and are threadably connected to the heating element 420.
Specifically, after the wires corresponding to the heating units 400 are led out through the corresponding wire channels 436, the wires can be fixed to the workbench 500 by the same fixing structure, and protected by the same drag chain.
In some preferred embodiments, as shown in fig. 4, the heating module further comprises a heat insulating strip 440, wherein the heat insulating strip 440 is arranged around the heating module. In specific application, the heating module is separated from the protection frame 200 by the heat insulation strips 440 around the heating module, so that the heat is prevented from being transferred to the protection frame 200 to influence the work of the protection frame 200.
The local inert gas protection system forms a protection gas cavity at the periphery of the printing substrate 100 through the protection frame 200 to perform deposition printing of components, by providing the air flow inlet 230, the air flow channel 240 and the air flow outlet 250 in communication, under the driving of the gas circulation system, the inert gas continuously delivered from the protective gas output mechanism blows through the cavity and flows out through the gas flow inlet 230, the gas flow channel 240 and the gas flow outlet 250, so that the inert gas flow continuously flows through the protective gas cavity, the protective gas cavity can be dynamically washed, a local inert gas protection area is formed in the protection gas cavity body to ensure that the printing work is in an inert protection atmosphere, local dynamic inert gas protection is carried out on the printing work area of the 3D printing equipment, the problem that gas needs to be washed again after the airtight space is opened is avoided, and the work efficiency is improved. The air inlet 230 is formed by arranging the circumferential open slot on the inner side of the protective frame 200, so that air in the protective cavity can be taken away from all directions and all directions of the protective cavity for air washing, uniform dynamic air washing of all areas in the protective cavity is facilitated, and balance of the whole oxygen content is promoted. By adjusting the conveying flow of the inert gas and the working frequency of the gas circulating system according to the detection value of the oxygen sensor, the oxygen content in the protective gas cavity can be ensured to be maintained within a preset range, and stable local dynamic inert gas protection is ensured. Through the structural arrangement of the protection frame 200, the height of the protection frame 200 can be flexibly adjusted and replaced according to the height of the component, and the operation is simple.
In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a local inert gas protection system, locates between cladding head and the printing substrate (100) of 3D printing apparatus, its characterized in that includes:
a protective frame (200), wherein the protective frame (200) is arranged at the periphery of the printing substrate (100) in a frame mode, and the minimum height of the protective frame (200) is larger than or equal to the height of a component so as to form a protective air cavity covering the working area of the printing substrate (100); an airflow channel (240) is arranged inside the protection frame (200), airflow inlets (230) are arranged on the periphery of the inner side of the protection frame (200), airflow outlets (250) are arranged on the outer side of the protection frame (200), the airflow inlets (230), the airflow channel (240) and the airflow outlets (250) are sequentially communicated, and the airflow outlets (250) are connected with an air circulation system;
the protective gas output mechanism is fixedly arranged relative to the cladding head and used for continuously conveying inert gas to the protective gas cavity, and the gas circulating system is used for continuously pumping away gas in the protective gas cavity so as to form inert gas flow in the protective gas cavity.
2. The local inert gas protection system according to claim 1, wherein the inside of the protection frame (200) is provided with a circumferentially open slot to form the gas flow inlet (230).
3. The local inert gas shielding system according to claim 1 or 2, wherein at least two gas flow outlets (250) are provided, and the at least two gas flow outlets (250) are distributed outside the circumference of the shielding frame (200).
4. The local inert gas shielding system according to claim 1, further comprising an oxygen sensor disposed in the shielding gas cavity for detecting an oxygen content in the shielding gas cavity.
5. The local inert gas protection system according to claim 4, further comprising a controller for adjusting the delivery flow rate of the inert gas from the protection gas output mechanism and the air volume of the gas circulation system according to the detection value of the oxygen sensor, so as to maintain the oxygen content in the protection gas cavity within a preset range.
6. The local inert gas protection system according to claim 1, wherein the inert gas is released above the printing substrate (100), and the gas flow inlet (230), the gas flow channel (240), and the gas flow outlet (250) are provided at a lower portion of the protection frame (200).
7. The local inert gas shielding system according to claim 6, wherein the protection frame (200) comprises a washing frame (210) and a protection enclosure frame (220) which are detachably connected, the protection enclosure frame (220) is disposed above the washing frame (210), and the gas flow inlet (230), the gas flow channel (240) and the gas flow outlet (250) are disposed on the washing frame (210).
8. The local inert gas protection system according to claim 7, wherein the protection enclosure frame (220) comprises four connecting columns (221) and four end-to-end partition plates (222), two adjacent partition plates (222) are connected through any connecting column (221), and a clamping groove (2211) for clamping the partition plates (222) is formed in each connecting column (221).
9. The local inert gas shielding system according to claim 8, wherein the bottom of the connecting column (221) is provided with a first connecting portion (2212), the top of the gas washing frame (210) is provided with a corresponding second connecting portion (211), the first connecting portion (2212) and the second connecting portion (211) are connected in an aligned manner, and a corresponding extending groove (2111) is provided corresponding to the clamping groove (2211) so as to enable the bottom of the partition plate (222) to be attached to the top of the gas washing frame (210).
10. The system according to claim 8, wherein the four end-to-end partitions (222) are a front partition (222 a), a rear partition (222 b), a left partition (222 c), and a right partition (222 d), respectively, the front partition (222 a) has a height smaller than the rear partition (222 b), and the top of the left partition (222 c) and the top of the right partition (222 d) are disposed to be inclined from the front partition (222 a) to the rear partition (222 b).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114713853A (en) * | 2022-04-14 | 2022-07-08 | 季华实验室 | Workpiece transfer method, system, device and storage medium of 3D printing device |
| CN114850509A (en) * | 2022-03-23 | 2022-08-05 | 南京铖联激光科技有限公司 | A protection gas device gas outlet is connected and is prevented damaged subassembly for in 3D prints |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313568A (en) * | 2014-10-11 | 2015-01-28 | 沈阳航空航天大学 | Local inert gas protection device for laser deposition repair of metal parts |
| CN107130239A (en) * | 2017-06-28 | 2017-09-05 | 苏州大学 | Local atmosphere protects metal or alloy laser melting coating and manufacturing process |
| CN107263865A (en) * | 2016-03-30 | 2017-10-20 | 佳能株式会社 | Three-dimensional modeling apparatus, threedimensional model manufacturing method and three-dimensional modeling data |
| CN207483849U (en) * | 2017-10-24 | 2018-06-12 | 山东科技大学 | A kind of laser melting coating cooling and protective device |
| CN207933527U (en) * | 2018-03-10 | 2018-10-02 | 洛阳瑞克循环利用科技有限公司 | A kind of new pattern laser cladding equipment |
| CN208857364U (en) * | 2018-10-08 | 2019-05-14 | 福建工程学院 | A kind of preset full device of laser melting coating protection gas |
| WO2019106382A1 (en) * | 2017-12-01 | 2019-06-06 | Camadd Ltd | An apparatus and method for additive manufacturing |
| CN110158080A (en) * | 2019-06-11 | 2019-08-23 | 浙江工业大学 | A kind of laser melting coating semi open model atmosphere protection and water cooling plant |
| CN110280762A (en) * | 2019-07-09 | 2019-09-27 | 南京中科煜宸激光技术有限公司 | Inert gas shielding flexibility warehouse and the processing method for utilizing the flexibility warehouse |
| CN210367905U (en) * | 2019-06-11 | 2020-04-21 | 浙江工业大学 | Semi-open type atmosphere protection and water cooling device for laser cladding |
| CN111545914A (en) * | 2020-05-22 | 2020-08-18 | 苏州大学 | Method for preparing titanium alloy based on laser processing spray head with powder fed in light for additive manufacturing |
| CN112296360A (en) * | 2020-11-06 | 2021-02-02 | 吉林大学 | Local gas sealing device for material increase and decrease manufacturing |
| CN213080075U (en) * | 2020-07-02 | 2021-04-30 | 沈阳金锋特种刀具有限公司 | Laser head local atmosphere protection architecture |
-
2021
- 2021-06-11 CN CN202110654056.9A patent/CN113245564B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313568A (en) * | 2014-10-11 | 2015-01-28 | 沈阳航空航天大学 | Local inert gas protection device for laser deposition repair of metal parts |
| CN107263865A (en) * | 2016-03-30 | 2017-10-20 | 佳能株式会社 | Three-dimensional modeling apparatus, threedimensional model manufacturing method and three-dimensional modeling data |
| CN107130239A (en) * | 2017-06-28 | 2017-09-05 | 苏州大学 | Local atmosphere protects metal or alloy laser melting coating and manufacturing process |
| CN207483849U (en) * | 2017-10-24 | 2018-06-12 | 山东科技大学 | A kind of laser melting coating cooling and protective device |
| WO2019106382A1 (en) * | 2017-12-01 | 2019-06-06 | Camadd Ltd | An apparatus and method for additive manufacturing |
| CN207933527U (en) * | 2018-03-10 | 2018-10-02 | 洛阳瑞克循环利用科技有限公司 | A kind of new pattern laser cladding equipment |
| CN208857364U (en) * | 2018-10-08 | 2019-05-14 | 福建工程学院 | A kind of preset full device of laser melting coating protection gas |
| CN110158080A (en) * | 2019-06-11 | 2019-08-23 | 浙江工业大学 | A kind of laser melting coating semi open model atmosphere protection and water cooling plant |
| CN210367905U (en) * | 2019-06-11 | 2020-04-21 | 浙江工业大学 | Semi-open type atmosphere protection and water cooling device for laser cladding |
| CN110280762A (en) * | 2019-07-09 | 2019-09-27 | 南京中科煜宸激光技术有限公司 | Inert gas shielding flexibility warehouse and the processing method for utilizing the flexibility warehouse |
| CN111545914A (en) * | 2020-05-22 | 2020-08-18 | 苏州大学 | Method for preparing titanium alloy based on laser processing spray head with powder fed in light for additive manufacturing |
| CN213080075U (en) * | 2020-07-02 | 2021-04-30 | 沈阳金锋特种刀具有限公司 | Laser head local atmosphere protection architecture |
| CN112296360A (en) * | 2020-11-06 | 2021-02-02 | 吉林大学 | Local gas sealing device for material increase and decrease manufacturing |
Non-Patent Citations (1)
| Title |
|---|
| 龚燕琪等: "开放环境下钛合金激光熔覆的局部气氛保护模型", 《中国激光》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114850509A (en) * | 2022-03-23 | 2022-08-05 | 南京铖联激光科技有限公司 | A protection gas device gas outlet is connected and is prevented damaged subassembly for in 3D prints |
| CN114850509B (en) * | 2022-03-23 | 2023-08-04 | 南京铖联激光科技有限公司 | A breakage-proof subassembly is connected to protection gas device gas outlet for in 3D prints |
| CN114713853A (en) * | 2022-04-14 | 2022-07-08 | 季华实验室 | Workpiece transfer method, system, device and storage medium of 3D printing device |
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|---|---|
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