CN114309661A - Automatic powder cleaning and piece taking mechanism of large-depth 3D metal printing equipment - Google Patents
Automatic powder cleaning and piece taking mechanism of large-depth 3D metal printing equipment Download PDFInfo
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- CN114309661A CN114309661A CN202111639465.8A CN202111639465A CN114309661A CN 114309661 A CN114309661 A CN 114309661A CN 202111639465 A CN202111639465 A CN 202111639465A CN 114309661 A CN114309661 A CN 114309661A
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- 239000000843 powder Substances 0.000 title claims abstract description 163
- 238000004140 cleaning Methods 0.000 title claims abstract description 42
- 238000007639 printing Methods 0.000 title claims abstract description 32
- 239000002184 metal Substances 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 238000007599 discharging Methods 0.000 claims abstract description 54
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000007493 shaping process Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000005484 gravity Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The invention discloses an automatic powder cleaning and taking mechanism of a large-depth 3D metal printing device, wherein a gap is reserved between the inner wall of a cylinder on the front side and the rear side of a forming cylinder and a forming substrate, powder discharging ports are respectively arranged on the front side and the rear side of the forming cylinder, the powder discharging ports are blocked by powder discharging sealing plates, the powder discharging sealing plates are driven by powder discharging cylinders, powder discharging cabins are arranged on the outer sides of the forming cylinder at the powder discharging ports, powder outlets are arranged at the bottoms of the powder discharging cabins, and the powder outlets are connected with a powder path circulating system; one side cylinder plate in the front side and the rear side of the forming cylinder can be opened, the forming base plate and the piston system are connected in a separable mode, a push-out cylinder is accommodated between the forming base plate and the piston system, a supporting frame capable of penetrating through the piston system and supporting the forming base plate is arranged below the piston system, and a stop block matched with a sliding block of the push-out cylinder is arranged below the forming base plate. The powder cleaning and piece taking device is simple and convenient in powder cleaning and piece taking operation, and solves the problems of difficulty in manual powder cleaning of the traditional large-depth metal printing equipment and safety risks caused by a piece taking mode of hanging the upper part of the traditional large-depth metal printing equipment.
Description
Technical Field
The invention belongs to the technical field of selective laser melting equipment, and particularly relates to an automatic powder cleaning and piece taking mechanism of large-depth 3D metal printing equipment.
Background
The metal 3D printing technology is commonly known as a metal additive manufacturing technology, and refers to a technology for constructing a metal part by using a powdered or wire-like metal material in a layer-by-layer printing manner based on a discrete-stacking principle and based on a three-dimensional digital model file and a program command.
Particularly for large-depth 3D metal printing equipment, because the traditional equipment powder cleaning mode is mainly that manual powder cleaning is carried out through a taking cabin and a glove box, the manual powder cleaning operation is complex and has certain safety risk; and the existing picking mode is mainly to pick printed parts to finish picking parts above the picking cabin, and the high-altitude picking mode is higher in height of the 3D metal printing equipment with large depth, so that the picking mode needs larger space and is higher in safety risk.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an automatic powder cleaning and taking mechanism of large-depth 3D metal printing equipment, and when powder is automatically cleaned, the manual input and safety risks in the powder cleaning stage are reduced by a mode of double cleaning of powder by using gravity and an external powder path circulating system; the structure that the piston system is separated from the forming substrate is utilized when the workpiece is taken, and the forming substrate and the printing workpiece are pushed out of the forming cylinder from the side direction by the push-out cylinder, so that the requirement on space when the large-depth 3D metal printing equipment takes the workpiece is reduced, and the safety risk caused by taking the workpiece in a lifting mode is reduced.
The invention is realized in this way, an automatic powder cleaning and taking mechanism of a large-depth 3D metal printing device comprises a forming cylinder, a forming base plate and a piston system, wherein a gap is reserved between the inner wall of the cylinder on the front side and the inner wall of the cylinder on the rear side of the forming cylinder and the forming base plate, powder discharging ports are respectively arranged on the front side and the rear side of the forming cylinder, the powder discharging ports are plugged through a powder discharging sealing plate, the powder discharging sealing plate is driven by a powder discharging cylinder to plug the powder discharging ports, a powder discharging cabin is arranged on the outer side of the forming cylinder at the powder discharging ports, a powder outlet is arranged at the bottom of the powder discharging cabin, and the powder outlet is connected with a powder path circulating system;
the forming device comprises a forming cylinder, a piston system, a forming base plate, a piston system, a supporting frame and a stop block, wherein one side cylinder plate in the front side and the rear side of the forming cylinder can be opened, the forming base plate is detachably connected with the piston system, an accommodating space for accommodating a push-out cylinder is arranged between the forming base plate and the piston system, the supporting frame which can penetrate through the piston system and support the forming base plate is arranged below the piston system, the stop block matched with a slide block of the push-out cylinder is arranged below the forming base plate, and the slide block moves to drive the stop block to move.
Preferably, the powder discharging cylinder is positioned at the outer side of the powder discharging cabin, and the telescopic rod of the powder discharging cylinder penetrates through the cabin wall of the powder discharging cabin to be connected with the powder discharging sealing plate; the powder discharging cylinder extends out to block the powder discharging port and retracts to reversely seal the powder discharging cabin.
Preferably, the caliber of the powder discharge port gradually increases from inside to outside, the shape of the powder discharge sealing plate is matched with the inner wall of the powder discharge port, and the extension plate is arranged around the outermost side of the powder discharge sealing plate, so that the powder discharge port can be better sealed.
Preferably, the top surface of the support frame is provided with a roller bearing, so that sliding friction between the support frame and the forming substrate is changed into rolling friction, and the forming substrate and the printing piece are more conveniently pushed out.
Preferably, the push-out cylinder is a rodless cylinder.
Preferably, the bottom of the forming substrate is provided with a chuck positioning pin, the top of the piston system is provided with a positioning chuck, and the chuck positioning pin and the positioning chuck are in lockable connection.
After printing is finished, the piston system and the forming substrate move to a powder discharging position, and the powder cleaning mechanism operates; after the powder is discharged, a cabin door of the forming cylinder is opened, the piston system and the forming substrate continue to move downwards to a separation position at the lower half part of the forming cylinder, at the moment, the support frame penetrates through the piston system, meanwhile, a positioning chuck connected above the piston system is loosened from a chuck positioning pin below the forming substrate, the support frame supports the forming substrate to prevent the forming substrate from moving downwards, the piston system continues to move downwards until the piston system is completely separated from the forming substrate, and a push-out cylinder hidden between the piston system and the forming substrate works to drive a stop block to move so as to push out the forming substrate and a printed part, so that the part taking is completed.
The invention has the following advantages and beneficial effects:
due to the adoption of a brand new technical scheme, compared with the prior art, the invention comprehensively considers the fusion of the powder cleaning mechanism and the Z axis of the host, optimizes the powder cleaning process of the traditional workpiece taking cabin and glove box mode, and utilizes gravity and an external powder path circulating system to perform double cleaning on powder, so that the powder cleaning mechanism not only reduces the occupied area and the cost of the workpiece taking box, but also can realize semi-automatic powder cleaning, reduces the manual investment and obtains higher safety; one cylinder plate of the forming cylinder can be opened as a movable cabin door, the forming cylinder can be pushed out from the side direction together with the formed substrate and the printed part through the push-out cylinder, the part taking height of the part taken from the side direction is low, other hoisting machinery is not needed, the requirement on the space when the part is taken from the large-depth printing equipment is reduced, the safety risk caused by the part taking in a hoisting mode is reduced, and the part taking is quicker and safer. The powder cleaning and piece taking device is simple and convenient in powder cleaning and piece taking operation, and solves the problems of difficulty in manual powder cleaning of the traditional large-depth metal printing equipment and safety risks caused by a piece taking mode of hanging the upper part of the traditional large-depth metal printing equipment.
Drawings
FIG. 1 is a schematic structural diagram of a powder cleaning mechanism provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pickup mechanism provided in the embodiment of the present invention.
In the figure: 1. a forming cylinder; 2. forming a substrate; 3. a piston system; 4. a powder discharge port; 5. a powder leakage sealing plate; 5-1, an extension plate; 6. a powder discharging cylinder; 7. a powder discharging cabin; 8. a powder outlet; 9. pushing out the cylinder; 10. a chuck positioning pin; 11. positioning the chuck; 12. a support frame; 13. a stopper; 14. and printing the piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
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 a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1 and 2, the embodiment provides an automatic powder cleaning and picking mechanism of a large-depth 3D metal printing device, including a forming cylinder 1, a forming substrate 2 and a piston system 3, a gap is left between the inner wall of the cylinder at the front and rear sides of the forming cylinder 1 and the forming substrate 2, powder discharge ports 4 are respectively arranged at the front and rear sides of the forming cylinder 1, the powder discharge ports 4 are blocked by powder discharge sealing plates 5, the powder discharge sealing plates 5 are driven by powder discharge cylinders 6 to block the powder discharge ports 4, a powder discharge cabin 7 is arranged at the outer side of the forming cylinder 1 at the powder discharge ports 4, a powder outlet 8 is arranged at the bottom of the powder discharge cabin 7, and the powder outlet 8 is connected to a powder path circulation system; the caliber of the powder discharge port 4 is gradually increased from inside to outside, the shape of the powder discharge sealing plate 5 is matched with the inner wall of the powder discharge port 4, and the extension plate 5-1 is arranged around the outermost side of the powder discharge sealing plate 5, so that the powder discharge port 4 can be better sealed. The powder discharging cylinder 6 is positioned at the outer side of the powder discharging cabin 7, and the telescopic rod of the powder discharging cylinder 6 penetrates through the cabin wall of the powder discharging cabin 7 to be connected with the powder discharging sealing plate 5; the powder discharging cylinder 6 plugs the powder discharging port 4 after extending out, and reversely seals the powder discharging cabin 7 after retracting.
One side cylinder board in both sides can be opened around the shaping jar 1, detachable is connected between shaping base plate 2 and the piston system 3, and is specific, 2 bottoms of shaping base plate are provided with chuck locating pin 10, 3 tops of piston system are provided with positioning chuck 11, chuck locating pin 10 and positioning chuck 11 can lock the connection. An accommodating space for accommodating the push-out cylinder 9 is arranged between the forming substrate 2 and the piston system 3, the push-out cylinder 9 is a rodless cylinder, a support frame 12 which can penetrate through the piston system 3 and support the forming substrate 2 is arranged below the piston system 3, a stop block 13 which is matched with a slide block of the push-out cylinder 9 is arranged below the forming substrate 2, and the slide block can move to drive the stop block 13 to move.
The top surface of the support frame 12 is provided with a roller bearing, so that sliding friction between the support frame 12 and the forming substrate 2 is changed into rolling friction, and the forming substrate 2 and a printed product can be pushed out more conveniently.
The specific implementation process of the embodiment:
the piston system 3 runs to a powder discharging position, the powder discharging port 4 is opened to discharge powder, the powder is discharged under the influence of gravity, and secondary powder cleaning is carried out through a powder path circulating system connected with a powder discharging cabin 7 after the powder is discharged by gravity; and taking the workpiece after the powder cleaning is finished, lowering the piston system 3 to a workpiece taking position, loosening the chuck positioning pin 10 and the positioning chuck 11, enabling the support frame 12 to penetrate through the piston system 3 to support the forming substrate 2 to be not moved downwards, continuing to move downwards until the piston system 3 is completely separated from the forming substrate, enabling the pushing cylinder 9 to work, enabling the sliding block of the pushing cylinder 9 to drive the stop block 13 to move, further pushing the forming substrate 2 and the printing part 14 out of the forming cylinder 1, and finishing the workpiece taking.
The powder cleaning mechanism mainly utilizes gravity to complete powder cleaning in one stage, and utilizes the powder path circulating system to take away residual powder in the forming cylinder 1 through airflow circulating in the powder path so as to complete powder cleaning in two stages. In the printing process of the equipment, the powder discharging port 4 is in a closed state, and the powder discharging port 4 completes the sealing of the cylinder body by using the powder discharging cylinder 6. After printing, piston system 3 moves to and lets out the powder position, lets out powder cylinder 6 and withdraws, and reverse sealed powder cabin 7 that lets out, and the powder receives the action of gravity to let out in powder cabin 7 along the gap between shaping base plate 2 and the jar wall, and both sides are let out powder cabin 7 and are connected outside powder way circulation system and form airtight clear powder environment, retrieve the powder. And when the powder is discharged in the first stage, the external powder path circulating system operates, the residual powder discharged in the first stage is entrained by the airflow to carry out two-stage powder cleaning, and after the two-stage powder cleaning is finished, the automatic powder cleaning is finished. The operation of the powder cleaning process is simple, and the powder cleaning mechanism can finish the powder cleaning according to a set program only by operating the operation panel.
After the automatic powder cleaning process is completed, the piston system 3, the forming substrate 2 and the printing piece 14 move downwards to a piece taking position, the chuck positioning pin 10 and the positioning chuck 11 are loosened, the support frame 12 penetrates through the piston system 3 to support the forming substrate 2, so that the forming substrate does not move downwards, and the piston system 3 continues to move downwards until the piston system 3 is completely separated from the forming substrate 2. At this time, the push-out cylinder 9 hidden in the piston system 3 works, the push-out cylinder 9 pushes the forming substrate 2 and the printing piece 14 out of the forming cylinder, the roller bearing is arranged on the top surface of the support frame 12, the friction force is reduced by utilizing rolling friction, and the smooth operation of the piece taking process is further ensured. The operation of the workpiece taking process is simple, the lifting and the taking of the workpieces are completed without other large machines, and the taking of the workpieces can be completed only by opening the cabin door of the forming cylinder 1 and pushing the forming substrate and the printing workpieces 14 out of the side surface by the pushing cylinder 9.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or some or all of the technical features may be equivalently replaced, and the modifications or the replacements may not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a clear powder of automation of big depth 3D metal printing equipment and get a mechanism, includes the shaping jar, takes shape base plate and piston system, its characterized in that: gaps are reserved between the inner walls of the forming cylinder on the front side and the rear side of the forming cylinder and the forming base plate, the front side and the rear side of the forming cylinder are respectively provided with a powder discharge port, the powder discharge ports are blocked by powder discharge sealing plates, the powder discharge sealing plates are driven by powder discharge cylinders to block the powder discharge ports, a powder discharge cabin is arranged on the outer side of the forming cylinder at the powder discharge ports, the bottom of the powder discharge cabin is provided with a powder outlet, and the powder outlet is connected with a powder path circulating system;
the forming device comprises a forming cylinder, a piston system, a forming base plate, a piston system, a supporting frame and a stop block, wherein one side cylinder plate in the front side and the rear side of the forming cylinder can be opened, the forming base plate is detachably connected with the piston system, an accommodating space for accommodating a push-out cylinder is arranged between the forming base plate and the piston system, the supporting frame which can penetrate through the piston system and support the forming base plate is arranged below the piston system, the stop block matched with a slide block of the push-out cylinder is arranged below the forming base plate, and the slide block moves to drive the stop block to move.
2. The automatic powder cleaning and taking mechanism of the large-depth 3D metal printing equipment as recited in claim 1, wherein the powder discharging cylinder is located outside the powder discharging cabin, and a telescopic rod of the powder discharging cylinder penetrates through a cabin wall of the powder discharging cabin to be connected with the powder discharging sealing plate; the powder discharging cylinder extends out to block the powder discharging port and retracts to reversely seal the powder discharging cabin.
3. The automatic powder cleaning and taking mechanism of the large-depth 3D metal printing device as claimed in claim 1, wherein the diameter of the powder discharging port gradually increases from inside to outside, the shape of the powder discharging sealing plate is matched with the inner wall of the powder discharging port, and the extension plate is arranged around the outermost side of the powder discharging sealing plate.
4. The automatic powder cleaning and picking mechanism of the large-depth 3D metal printing equipment as claimed in claim 1, wherein a roller bearing is arranged on the top surface of the supporting frame.
5. The automatic powder cleaning and picking mechanism of the large-depth 3D metal printing equipment according to claim 1, wherein the pushing cylinder is a rodless cylinder.
6. The automatic powder cleaning and piece taking mechanism of the large-depth 3D metal printing equipment as claimed in claim 1, wherein a chuck positioning pin is arranged at the bottom of the forming substrate, a positioning chuck is arranged at the top of the piston system, and the chuck positioning pin and the positioning chuck are in lockable connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111639465.8A CN114309661A (en) | 2021-12-29 | 2021-12-29 | Automatic powder cleaning and piece taking mechanism of large-depth 3D metal printing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111639465.8A CN114309661A (en) | 2021-12-29 | 2021-12-29 | Automatic powder cleaning and piece taking mechanism of large-depth 3D metal printing equipment |
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| CN114309661A true CN114309661A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111639465.8A Pending CN114309661A (en) | 2021-12-29 | 2021-12-29 | Automatic powder cleaning and piece taking mechanism of large-depth 3D metal printing equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114939677A (en) * | 2022-06-02 | 2022-08-26 | 季华实验室 | Forming cylinder equipment for 3D printing and operation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114939677B (en) * | 2022-06-02 | 2023-06-02 | 季华实验室 | Forming cylinder equipment for 3D printing and operation method |
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