Powder taking device for 3D printing equipment and 3D printing equipment

Abstract

The invention provides a powder taking device for 3D printing equipment and the 3D printing equipment. The powder taking device for the 3D printing equipment comprises a feeding plate, a discharging plate, an adjusting plate, a guiding structure and a driving assembly. The feeding plate is provided with a through feeding groove. The discharging plate is fixedly connected with one side of the feeding plate, a through discharging groove is formed in the discharging plate, and the discharging groove and the feeding groove are arranged in a staggered mode. The adjusting plate is movably arranged between the feeding plate and the discharging plate and provided with a first through groove and a second through groove, the width of the first through groove is larger than that of the second through groove, and the distance between the side, away from the discharging groove, of the feeding groove and the side, close to the feeding groove, of the discharging groove is larger than that of the first through groove. The guide structure is arranged at the end of the adjusting plate. The driving assembly is in transmission connection with the adjusting plate and drives the adjusting plate to reciprocate in the second direction, and the corresponding relation between the first through groove or the second through groove and the feeding groove or the discharging groove is switched. In this way, stable movement of the material taking structure and accurate adjustment of the powder taking amount are achieved.

Description

Technical Field

[0001] The present application relates to the field of 3D printing technology, and more specifically, to a powder collecting device for a 3D printing device and a 3D printing device. Background Art

[0002] Metal 3D printing has broad application prospects in manufacturing, aerospace, healthcare, automotive, and other fields. It can achieve the manufacture of complex structures and personalized production, while promoting lightweight design, efficient material utilization, and rapid prototyping, bringing higher production efficiency, lower costs, and stronger innovation capabilities to various industries. With the continuous advancement of technology, metal 3D printing will further break through the limitations of traditional manufacturing and provide strong support for future intelligent manufacturing and sustainable development.

[0003] In 3D printing equipment, the stability of the powder collection system is crucial to the quality of printed parts. Currently, the commonly used powder collection structures on the market have problems such as unstable movement and inaccurate powder amount adjustment. Summary of the Invention

[0004] This application provides a powder collecting device for 3D printing equipment and a 3D printing equipment to solve the above technical problems.

[0005] The embodiment of the present application is implemented as follows: A powder collecting device for 3D printing equipment includes a feed plate, a discharge plate, an adjustment plate, a guide structure and a drive assembly. The feed plate is provided with a feed trough that passes through the feed plate along a first direction. The discharge plate is fixedly connected to one side of the feed plate along the first direction, and the discharge plate is provided with a discharge trough that passes through the discharge plate along the first direction, and the discharge trough and the feed trough are staggered along a second direction. The adjustment plate is movably arranged between the feed plate and the discharge plate, and the adjustment plate is provided with a first through slot and a second through slot, the first through slot and the second through slot pass through the adjustment plate along the first direction, and are spaced apart along the second direction; along the second direction, the width of the first through slot is greater than the width of the second through slot, and the distance between the side of the feed trough away from the discharge trough and the side of the discharge trough close to the feed trough is greater than the width of the first through slot. A guide structure is disposed at an end of the adjustment plate along a third direction, wherein the first direction, the second direction, and the third direction intersect each other. The guide structure extends along the second direction and is movably coupled to the feed plate and / or the discharge plate. A drive assembly is in transmission connection with the adjustment plate and is configured to drive the adjustment plate to reciprocate along the second direction, thereby switching the correspondence between the first through slot or the second through slot and the feed chute or the discharge chute.

[0006] In this way, the driving component drives the adjusting plate to reciprocate in the second direction, and the movement of the adjusting plate can be guided by the guiding structure, improving the movement stability of the powder taking structure. The amount of powder taken is determined by the volumes of the first through groove and the second through groove. When it is necessary to increase the amount of powder taken, the driving component can drive the adjusting plate to move so that the first through groove is first correspondingly communicated with the feeding groove to quantitatively obtain the powder material, and then correspondingly communicated with the discharging groove to let the relatively large amount of powder obtained fall into the discharging groove. When it is necessary to decrease the amount of powder taken, the driving component can drive the adjusting plate to move so that the second through groove is first correspondingly communicated with the feeding groove to quantitatively obtain the powder material, and then correspondingly communicated with the discharging groove to let the relatively small amount of powder obtained fall into the discharging groove. The stable movement of the adjusting plate and the coordinated cooperation between the first through groove and the second through groove with different widths and the feeding groove and the discharging groove realize the stable adjustment of the amount of powder taken, improve the accuracy of powder amount adjustment, and reduce the waste of powder material.

[0007] In a possible implementation manner: the guiding structure includes a first convex block, and the first convex block is arranged on the side of the adjusting plate facing the feeding plate along the first direction; the feeding plate is provided with a first sliding groove, the first sliding groove extends along the second direction, and the first convex block is received in the first sliding groove.

[0008] In a possible implementation manner: the guiding structure includes a second convex block, and the second convex block is arranged on the side of the adjusting plate facing the discharging plate along the first direction; the discharging plate is provided with a second sliding groove, the second sliding groove extends along the second direction, and the second convex block is received in the second sliding groove.

[0009] In a possible implementation manner: along the first direction, a first fitting groove is arranged on the side of the feeding plate facing the adjusting plate, and a second fitting groove is arranged on the side of the discharging plate facing the adjusting plate, and the adjusting plate is received in the first fitting groove and the second fitting groove. The guiding structure includes a sliding member. Along the third direction, a first guide rail is arranged on the side wall of the first fitting groove, and the sliding member is slidably matched with the first guide rail, and / or a second guide rail is arranged on the side wall of the second fitting groove, and the sliding member is slidably matched with the second guide rail.

[0010] In a possible implementation manner: along the second direction, the distance between the side of the feeding groove away from the discharging groove and the side of the discharging groove close to the feeding groove is L1, and the width of the first through groove is a, where L1 > a.

[0011] In a possible implementation manner: The driving assembly includes a mounting plate, a connecting plate, a guiding mechanism, and a driver. The mounting plate is fixedly connected to the feeding plate or the discharging plate. The connecting plate is fixedly connected to the adjusting plate. The guiding mechanism and the driver are assembled to the mounting plate. The guiding mechanism is arranged along the second direction. The connecting plate is in transmission connection with the guiding mechanism. The driver is in transmission connection with the guiding mechanism and is used to drive the connecting plate to move along the guiding mechanism.

[0012] In a possible implementation manner: The powder taking device further includes a detection assembly configured on the mounting plate for detecting the position of the connecting plate. The detection assembly is communicatively connected to the driver.

[0013] In a possible implementation manner: The detection assembly includes a first detection mechanism and a second detection mechanism. The first detection mechanism includes a first bracket, a first detection piece, a first inductor, and a second inductor. The first bracket is configured on the mounting plate. The first detection piece is fixedly arranged relative to the connecting plate. The first inductor and the second inductor are arranged on the first bracket at intervals along the second direction and are used to detect the corresponding relationship between the first through slot, the second through slot, and the feeding slot. The second detection mechanism includes a second bracket, a second detection piece, a fourth inductor, and a fifth inductor. The second bracket is configured on the mounting plate. The second detection piece is fixedly arranged relative to the connecting plate. The fourth inductor and the fifth inductor are arranged on the second bracket at intervals along the second direction and are used to detect the corresponding relationship between the first through slot, the second through slot, and the discharging slot.

[0014] In a possible implementation manner: The first detection mechanism further includes a third inductor. The third inductor is arranged between the first inductor and the second inductor at intervals along the second direction. When the adjusting plate moves to a position where the feeding slot is between the first through slot and the second through slot and the adjusting plate covers the feeding slot, the first detection piece matches with the third inductor. The second detection mechanism further includes a sixth inductor. The sixth inductor is arranged between the fourth inductor and the fifth inductor at intervals along the second direction. When the adjusting plate moves to a position where the first through slot corresponds to the feeding slot, the discharging slot is between the first through slot and the second through slot, and the adjusting plate covers the discharging slot, the second detection piece matches with the sixth inductor.

[0015] In a possible implementation manner: Along the first direction, sealing grooves are respectively arranged on opposite side surfaces of the adjusting plate. Sealing members are filled in the sealing grooves. The sealing members are in sealing cooperation with the feeding plate or the discharging plate.

[0016] An embodiment of the present application further provides a 3D printing device, including a printing box body and the powder fetching device for the 3D printing device described in the above embodiment, and the powder fetching device for the 3D printing device is arranged in the printing box body. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of the powder fetching device for a 3D printing device according to an embodiment of the present application.

[0019] Figure 2 For Figure 1 It is a schematic structural diagram of the powder fetching device shown in another direction.

[0020] Figure 3 For Figure 1 It is an exploded structural diagram of the powder fetching device shown.

[0021] Figure 4 For Figure 1 It is a partial structural exploded view of the powder fetching device shown.

[0022] Figure 5 For Figure 1 It is a schematic cross-sectional structural diagram of the powder fetching device shown along the V-V direction.

[0023] Figure 6 For Figure 5 It is a schematic cross-sectional structural diagram of the powder fetching device shown in another state.

[0024] Figure 7 For Figure 5 It is a schematic cross-sectional structural diagram of the powder fetching device shown in another state.

[0025] Figure 8 For Figure 5 It is a schematic cross-sectional structural diagram of the powder fetching device shown in another state.

[0026] Figure 9 For Figure 1 It is a partially enlarged view of the local structure of the powder fetching device shown.

[0027] Figure 10 For Figure 4 It is a partially enlarged view of the local structure of the adjusting plate in the structure shown.

[0028] Figure 11Schematic diagram of the drive assembly in the powder extraction device shown in one embodiment.

[0029] Figure 12 It is Figure 11 Schematic diagram of the drive assembly shown in another direction.

[0030] Figure 13 It is Figure 11 Exploded schematic diagram of the drive assembly shown.

[0031] Figure 14 It is Figure 11 Exploded schematic diagram of the drive assembly shown in another direction.

[0032] Figure 15 Schematic diagram of the structure of a 3D printing device in one embodiment.

[0033] Description of main component symbols: Powder extraction device 100 Feeding plate 10 Feeding trough 11 First chute 12 First mating groove 13 First guide rail 14 Clearance groove 15 Discharge plate 20 Discharge trough 21 Second chute 22 Second mating groove 23 Second guide rail 24 Adjusting plate 30 First through slot 31 Second through slot 32 Sealing groove 33 Sealing element 34 Guiding structure 40 First convex block 41 Second convex block 42 Sliding part 43 Drive assembly 50 Mounting plate 51 Connecting plate 52 Guiding mechanism 53 Linear guide rail 531 Sliding bracket 532 First part 5321 Second part 5322 Third part 5323 Driver 54 Detection assembly 60 First detection mechanism 61 The first bracket 611 The first detection piece 612 The first sensor 613 The second sensor 614 The third sensor 615 The second detection mechanism 62 The second bracket 621 The second detection piece 622 The fourth sensor 623 The fifth sensor 624 The sixth sensor 625 The baffle 70 The 3D printing device 200 The printing box body 201 The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. When an element is considered to be "disposed on" another element, it can be directly disposed on the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments, and are not intended to limit this application. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0037] Some embodiments of the present application will be described in detail. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0038] See Figures 1 to 14This embodiment provides a powder collection device 100 for a 3D printing device 200, comprising a feed plate 10, a discharge plate 20, an adjustment plate 30, a guide structure 40, and a drive assembly 50. The feed plate 10 is provided with a feed trough 11 extending through the feed plate 10 along a first direction. The discharge plate 20 is fixedly connected to one side of the feed plate 10 along a first direction A. The discharge plate 20 is provided with a discharge trough 21 extending through the discharge plate 20 along the first direction A. The discharge trough 21 is staggered with the feed trough 11 along a second direction B. The adjustment plate 30 is movably disposed between the feed plate 10 and the discharge plate 20. The adjustment plate 30 is provided with a first through-slot 31 and a second through-slot 32. The first through-slot 31 and the second through-slot 32 extend through the adjustment plate 30 along the first direction and are spaced apart along the second direction B. Along the second direction B, the width of the first through-slot 31 is greater than the width of the second through-slot 32, and the distance between the feed trough 11 and the discharge trough 21 on the same side is greater than the width of the first through-slot 31. This prevents powder from leaking out of the discharge trough 21 when the feed trough 11 is connected to the first through-slot 31 or the second through-slot 32, thereby affecting the accuracy of powder quantity adjustment. A guide structure 40 is disposed at an end of the adjustment plate 30 along a third direction C. The first direction A, the second direction B, and the third direction C intersect with each other. The guide structure 40 extends along the second direction B and movably cooperates with the feed plate 10 and / or the discharge plate 20. The driving assembly 50 is in transmission connection with the adjustment plate 30 and is used to drive the adjustment plate 30 to move back and forth along the second direction B, switching the corresponding relationship between the first through slot 31 or the second through slot 32 and the feed slot 11 or the discharge slot 21 .

[0039] In this way, the drive assembly 50 drives the adjustment plate 30 to reciprocate in the second direction B, and the movement of the adjustment plate 30 can be guided by the guide structure 40 between the feed plate 10 and the discharge plate 20, thereby improving the movement stability of the powder collection mechanism. The structure is simple, maintenance is convenient, and movement jamming is unlikely to occur. The amount of powder collected is determined by the volume of the first through-slot 31 and the second through-slot 32. When the powder collection amount needs to be increased, the drive assembly 50 can move the adjustment plate 30 so that the first through-slot 31 first connects with the feed trough 11 to quantitatively collect powder, and then connects with the discharge trough 21 to allow the collected powder to fall into the discharge trough 21. When the powder collection amount needs to be reduced, the drive assembly 50 can move the adjustment plate 30 so that the second through-slot 32 first connects with the feed trough 11 to quantitatively collect powder, and then connects with the discharge trough 21 to allow the collected powder to fall into the discharge trough 21. The stable movement of the adjustment plate 30 and the coordinated cooperation between the first through slots 31 and the second through slots 32 of different widths and the feed trough 11 and the discharge trough 21 achieve stable adjustment of the powder amount, improve the accuracy of powder amount adjustment, and reduce powder waste.

[0040] See alsoFigures 3 to 8 In some embodiments, the width of the first through slot 31 is a, the width of the second through slot 32 is b, the width of the feed slot 11 is c, and the width of the discharge slot 21 is d. Among them, d≥a>b, so as to ensure that when the first through slot 31 or the second through slot 32 is correspondingly communicated with the discharge slot 21, the powder in the first through slot 31 or the second through slot 32 can completely fall into the discharge slot 21. Both the first through slot 31 and the second through slot 32 are through slots vertically penetrating the adjusting plate 30, and the width a of the first through slot 31 is greater than the width b of the second through slot 32. Thus, the volume of the first through slot 31 is greater than the volume of the second through slot 32. When the first through slot 31 or the second through slot 32 is correspondingly communicated with the feed slot 11, the powder can fall into the first through slot 31 or the second through slot 32 through the feed slot 11. The total amount of powder in the slot when the first through slot 31 or the second through slot 32 is filled with powder is the single powder taking amount. When it is necessary to reduce the powder taking amount, the driving assembly 50 can drive the adjusting plate 30 to move along the second direction B so that the second through slot 32 is correspondingly communicated with the feed slot 11. When it is necessary to increase the powder taking amount, the driving assembly 50 can drive the adjusting plate 30 to move along the second direction B so that the first through slot 31 is correspondingly communicated with the feed slot 11. The width c of the feed slot 11 can be greater than the width a of the first through slot 31, or can be less than or equal to the width a of the first through slot 31, as long as the powder can fill the first through slot 31 or the second through slot 32. The present application is not limited thereto.

[0041] In some embodiments, the distance between the side of the feed slot 11 away from the discharge slot 21 and the side of the discharge slot 21 close to the feed slot 11 is L1, that is, in the illustrated view, the distance between the left side of the feed slot 11 and the left side of the discharge slot 21 is L1. The distance between the side of the first through slot 31 away from the second through slot 32 and the side of the second through slot 32 away from the first through slot 31 is L2. That is, in the illustrated view, the distance between the left side of the first through slot 31 and the right side of the second through slot 32 is L2. Among them, L1<L2, L1>a, so as to ensure that when the first through slot 31 or the second through slot 32 is communicated with the feed slot 11, the discharge slot 21 can be staggered from the first through slot 31 or the second through slot 32, avoiding the powder falling from the first barrel slot or the second through slot 32 into the discharge slot 21 during the feeding process, which affects the accuracy of powder amount adjustment.

[0042] The distance between the opposite sides of the first through slot 31 and the second through slot 32 is W1, that is, the distance between the right side of the first through slot 31 and the left side of the second through slot 32 is W1, where W1>d. Along the second direction B, the second through slot 32 is located on the side of the first through slot 31 facing the driving assembly 50. When the adjusting plate 30 moves to make the first through slot 31 communicate with the feed slot 11, along the second direction B, the discharge slot 21 is located between the first through slot 31 and the second through slot 32, and the area of the adjusting plate 30 located between the first through slot 31 and the second through slot 32 covers the discharge slot 21 to ensure that the powder does not leak from the discharge slot 21 during the feeding process.

[0043] In some embodiments, the distance W1 between the opposite sides of the first through-slot 31 and the second through-slot 32 can also be greater than the width c of the feed trough 11, that is, W1>c. When the first through-slot 31 or the second through-slot 32 is connected to the discharge trough 21, along the second direction B, the feed trough 11 is located between the first through-slot 31 and the second through-slot 32. The area of the adjustment plate 30 located between the first through-slot 31 and the second through-slot 32 covers the feed trough 11, preventing powder in the feed trough 11 from falling into the first through-slot 31 or the second through-slot 32 during the discharge of the discharge trough 21, thereby affecting the accuracy of powder collection or the powder spreading process.

[0044] Due to the aforementioned dimensional constraints, while the first through-channel 31 is in communication with the feed trough 11 and the discharge trough 21, respectively, the second through-channel 32 is always offset from the feed trough 11 and the discharge trough 21 and remains closed, thus preventing powder from accidentally entering the second through-channel 32 and causing powder waste. While the second through-channel 32 is in communication with the feed trough 11 and the discharge trough 21, respectively, the first through-channel 31 is also always offset from the feed trough 11 and the discharge trough 21 and remains closed.

[0045] Specifically, in one embodiment, see Figure 5 and Figure 6 When the powder extraction amount needs to be reduced, the drive assembly 50 can drive the adjustment plate 30 to move in the second direction B, so that the second through-slot 32 is first connected to the feed trough 11. At this time, the discharge trough 21 is covered by the adjustment plate 30 and is in a closed state. After the powder falls from the feed trough 11 and fills the second through-slot 32, the drive assembly 50 drives the adjustment plate 30 to move again, so that the second through-slot 32 filled with powder is connected to the discharge trough 21. The powder can be discharged from the bottom of the discharge trough 21, adapting to the feeding needs of small layer thickness powder. At this time, along the second direction B, the feed trough 11 is located between the first through-slot 31 and the second through-slot 32, and the feed trough 11 is covered, and the powder delivery stops.

[0046] In one embodiment, see Figure 7 and Figure 8 When the powder intake needs to be increased, the drive assembly 50 drives the adjustment plate 30 to move in the second direction B, causing the first slot 31 to first connect with the feed trough 11. At this point, the discharge trough 21 is located between the first slot 31 and the second slot 32, and is covered by the adjustment plate 30, closing the trough. After the powder falls from the feed trough 11 and fills the first slot 31, the drive assembly 50 again drives the adjustment plate 30 to connect the powdered first slot 31 with the discharge trough 21. The powder can then be discharged from below the discharge trough 21, meeting the requirements for thick powder feeding. At this point, the feed trough 11 is covered by the adjustment plate 30, ceasing powder delivery.

[0047] Please refer again Figures 1 to 3, in some embodiments, the opposite two side surfaces of the adjusting plate 30 are respectively in clearance fit with the feeding plate 10 and the discharging plate 20, so that the adjusting plate 30 can slide smoothly between them. The width of the feeding plate 10 is substantially the same as the width of the discharging plate 20, and the width of the adjusting plate 30 is smaller than the width of the feeding plate 10. During the reciprocating movement of the adjusting plate 30 along the second direction B, it will not exceed the outer side surfaces of the feeding plate 10 and the discharging plate 20, reducing the risk of accidental detachment of the adjusting plate 30 and leakage of powder materials.

[0048] In some embodiments, the material taking device further includes baffles 70. Along the second direction B, a plurality of baffles 70 are arranged on the opposite two sides of the feeding plate 10 and the discharging plate 20 and block the adjusting plate 30, thereby further reducing the problems of accidental detachment of the adjusting plate 30 and leakage of powder materials. The plurality of baffles 70 can be one baffle 70 or two or more baffles 70, as long as the design requirements are met, and the present application is not limited thereto.

[0049] Please refer to Figure 2 、 Figure 3 and Figure 9 , in some embodiments, the guiding structure 40 includes a first convex block 41, and the first convex block 41 is arranged on the side of the adjusting plate 30 facing the feeding plate 10 along the first direction A. The feeding plate 10 is provided with a first sliding groove 12, and the first sliding groove 12 extends along the second direction B. The first convex block 41 is received in the first sliding groove 12. In this way, during the movement of the adjusting plate 30 along the second direction B, the first convex block 41 and the first sliding groove 12 are in sliding fit to guide the moving direction of the adjusting plate 30 and improve the movement stability of the adjusting plate 30.

[0050] In some embodiments, the guiding structure 40 includes a second convex block 42, and the second convex block 42 is arranged on the side of the adjusting plate 30 facing the discharging plate 20 along the first direction A. The discharging plate 20 is provided with a second sliding groove 22, and the second sliding groove 22 extends along the second direction B. The second convex block 42 is received in the second sliding groove 22. In this way, during the movement of the adjusting plate 30 along the second direction B, the second convex block 42 and the second sliding groove 22 are in sliding fit to guide the moving direction of the adjusting plate 30 and further improve the movement stability of the adjusting plate 30.

[0051] In the embodiments of the present application, the first convex block 41, the first sliding groove 12, the second convex block 42, and the second sliding groove 22 are respectively located on different surfaces of the adjusting plate 30. In other embodiments, the adjusting plate 30 may also be provided with a combination of the first convex block 41 and the first sliding groove 12, or a combination of the second convex block 42 and the second sliding groove 22 only on one side surface.

[0052] In some embodiments, along the first direction A, a first mating groove 13 is provided on one side of the feed plate 10 facing the adjusting plate 30, and a second mating groove 23 is provided on one side of the discharge plate 20 facing the adjusting plate 30. In this way, the first mating groove 13 and the second mating groove 23 are arranged opposite to and communicate with each other. The adjusting plate 30 is received in the first mating groove 13 and the second mating groove 23. The adjusting plate 30 can reciprocate within the space formed by the first mating groove 13 and the second mating groove 23 to adjust the corresponding relationship between the first through groove 31, the second through groove 32 and the feed groove 11, the discharge groove 21. The guiding structure 40 includes a sliding member 43. Along the third direction C, a first guide rail 14 is provided on the side wall of the first mating groove 13, and the sliding member 43 is slidably engaged with the first guide rail 14, and / or a second guide rail 24 is provided on the side wall of the second mating groove 23, and the sliding member 43 is slidably engaged with the second guide rail 24.

[0053] In this way, the moving direction of the adjusting plate 30 can be guided by the first guide rail 14 and the sliding member 43, or the second guide rail 24 and the sliding member 43, further improving the movement stability of the adjusting plate 30. In some of these embodiments, the guiding assembly may only include the bumps 41, 42 and the sliding grooves 12, 22, or only include the guide rails 14, 24 and the sliding member 43. In other embodiments, the bumps 41, 42 and the sliding grooves 12, 22, the guide rails 14, 24 and the sliding member 43 may also be provided simultaneously. As long as the design requirements are met, the present application is not limited thereto.

[0054] Please refer to Figures 3 to 10 , in some embodiments, along the first direction A, sealing grooves 33 are respectively provided on the opposite two side surfaces of the adjusting plate 30, and sealing members 34 are filled in the sealing grooves 33, and the sealing members 34 are in sealing cooperation with the feed plate 10 or the discharge plate 20. In this way, during the movement of the adjusting plate 30, the powder material will not leak out of the powder taking device 100 from the gap between the adjusting plate 30 and the feed plate 10 or the discharge plate 20 to affect the printing process.

[0055] In some embodiments, the first through groove 31 includes a plurality of sub-grooves arranged side by side along the third direction C to improve the powder taking uniformity. In some embodiments, the second through groove 32 may also include a plurality of sub-grooves arranged side by side along the third direction C.

[0056] In other embodiments, the first through groove 31 and / or the second through groove 32 may also be a long strip through groove extending along the third direction C. As long as the design requirements are met, the present application is not limited thereto.

[0057] In some of these embodiments, the sealing groove 33 has a rectangular ring structure and is disposed around the peripheral side of the surface of the adjusting plate 30. The first through groove 31 and the second through groove 32 are within the range surrounded by the sealing groove 33 to ensure the sealing effect. In other embodiments, the sealing groove 33 can also be of other shapes as long as it can surround the first through groove 31 and the second through groove 32 therein.

[0058] Please refer to Figures 11 to 14 , in some embodiments, the driving assembly 50 includes a mounting plate 51, a connecting plate 52, a guiding mechanism 53 and a driver 54. The mounting plate 51 is fixedly connected to the feeding plate 10 or the discharging plate 20. The connecting plate 52 is fixedly connected to the adjusting plate 30. The guiding mechanism 53 and the driver 54 are assembled to the mounting plate 51. The guiding mechanism 53 is arranged along the second direction B. The connecting plate 52 is drivingly connected to the guiding mechanism 53, and the driver 54 is drivingly connected to the guiding mechanism 53 for driving the connecting plate 52 to move along the guiding mechanism 53.

[0059] In this way, the driver 54, the guiding mechanism 53, etc. can be assembled together with the feeding plate 10 through the mounting plate 51 to make the overall structure compact, and the movement stability and reliability of the adjustment are also ensured through the guiding mechanism 53 and the connecting plate 52.

[0060] In one of the embodiments, the mounting plate 51 is fixedly connected to the discharging plate 20. A positioning block 25 is further provided on one side of the discharging plate 20 facing the driving assembly 50, and a positioning groove 511 is provided on the mounting plate 51. The positioning block 25 cooperates with the positioning groove 511, and the positioning block 25 can abut against the side wall of the positioning groove 511 to position the installation positions of the mounting plate 51 and the discharging plate 20, facilitating operations such as screwing and reducing the installation difficulty.

[0061] In some embodiments, the guiding mechanism 53 includes a linear guide rail 531 and a sliding bracket 532. The output end of the driver 54 is drivingly connected to the linear guide rail 531, and the sliding bracket 532 is assembled on the linear guide rail 531. When the driver 54 is started, it can drive the sliding bracket 532 to reciprocate along the linear guide rail 531. The connecting plate 52 is fixedly arranged on the side of the sliding bracket 532 facing the adjusting plate 30 and is fixedly connected to the adjusting plate 30 to drive the adjusting plate 30 to move synchronously with the sliding bracket 532. An avoidance groove 15 is further provided on one side of the feeding plate 10 facing the sliding bracket 532 to ensure the movement range of the adjusting plate 30.

[0062] Please refer to Figures 12 to 14, in some embodiments, the powder taking device 100 further includes a detection component 60 configured on the mounting plate 51 for detecting the position of the connection plate 52, and the detection component 60 is communicatively connected to the driver 54. In this way, the driver 54 can control the moving distance of the adjusting plate 30 according to the detection signal of the detection component 60, and further accurately control the corresponding relationship between the first through slot 31, the second through slot 32 and the feeding slot 11 and the discharging slot 21, improving the accuracy of powder adjustment.

[0063] In one implementation manner, the detection component 60 includes: a first detection mechanism 61, including a first bracket 611, a first detection piece 612, a first inductor 613, and a second inductor 614. The first bracket 611 is configured on the mounting plate 51, the first detection piece 612 is fixedly arranged relative to the connection plate 52, and the first inductor 613 and the second inductor 614 are arranged on the first bracket 611 at intervals along the second direction B for detecting the corresponding relationship between the first through slot 31, the second through slot 32 and the feeding slot 11; a second detection mechanism 62, including a second bracket 621, a second detection piece 622, a fourth inductor 623, and a fifth inductor 624. The second bracket 621 is configured on the mounting plate 51, the second detection piece 622 is fixedly arranged relative to the connection plate 52, and the fourth inductor 623 and the fifth inductor 624 are arranged on the second bracket 621 at intervals along the second direction B for detecting the corresponding relationship between the first through slot 31, the second through slot 32 and the discharging slot 21.

[0064] Specifically, the first bracket 611 and the second bracket 621 are staggeredly arranged on the mounting plate 51. On the one hand, it can adapt to different positions of the feeding slot 11, the discharging slot 21, etc., and on the other hand, it is to avoid detection interference and affect the detection accuracy. In the implementation manner of the present application, the discharging slot 21 is closer to the driver 54 than the feeding slot 11. Along the second direction B, the second bracket 621 is located at an interval on the side of the first bracket 611 away from the feeding plate 10. The first detection piece 612 and the second detection piece 622 are fixedly installed on the sliding bracket 532 and are staggeredly arranged to respectively correspond to the first bracket 611 and the second bracket 621.

[0065] Along the second direction B, the second inductor 614 is located at an interval on the side of the first inductor 613 facing the feeding plate 10. If it is necessary to increase the powder taking amount, the driver 54 drives the sliding bracket 532 to move towards the feeding plate 10. When the first through slot 31 is correspondingly communicated with the feeding slot 11, the first detection piece 612 is paired with the first inductor 613. At this time, the driver 54 stops the adjusting plate 30 according to the signal of the first inductor 613 and waits for a preset time to fill the first through slot 31 with powder. Then, the driver 54 drives the adjusting plate 30 to move in the reverse direction to make the first through slot 31 filled with powder correspondingly communicated with the discharging slot 21.

[0066] If the amount of powder taken needs to be reduced, the driver 54 drives the sliding bracket 532 to move toward the feed plate 10. When the second through slot 32 is connected to the feed trough 11, the first detection piece 612 is paired with the second sensor 614. At this time, the driver 54 stops the adjustment plate 30 according to the signal of the second sensor 614, waits for a preset time to allow the second through slot 32 to be filled with powder, and then the driver 54 drives the adjustment plate 30 to move in the opposite direction, so that the second through slot 32 filled with powder is connected to the discharge trough 21.

[0067] Along the second direction B, the fifth sensor 624 is spaced apart from the fourth sensor 623 on the side facing the feed plate 10. The driver 54 drives the sliding bracket 532 toward the feed plate 10. When the first slot 31 and the discharge chute 21 are in corresponding communication, the second detection piece 622 mates with the fourth sensor 623. At this point, the driver 54, based on the signal from the fourth sensor 623, stops the adjustment plate 30 and waits a predetermined amount of time for the powder in the first slot 31 to be discharged from the discharge chute 21. The driver 54 then drives the adjustment plate 30 in the opposite direction, offsetting the first slot 31 from the discharge chute 21.

[0068] The driver 54 drives the sliding bracket 532 to move toward the feed plate 10. When the second through slot 32 is connected to the discharge slot 21, the second detection piece 622 is paired with the fifth sensor 624. At this time, the driver 54 stops the adjustment plate 30 according to the signal of the fifth sensor 624, waits for a preset time, and allows the powder in the second through slot 32 to be discharged from the discharge slot 21. Then, the driver 54 drives the adjustment plate 30 to move in the opposite direction, and the second through slot 32 is staggered with the discharge slot 21.

[0069] In some embodiments, the first detection mechanism 61 further includes a third sensor 615, which is spaced between the first sensor 613 and the second sensor 614 along the second direction B. When the adjustment plate 30 moves to the feed trough 11 and is located between the first through groove 31 and the second through groove 32, and the adjustment plate 30 covers the feed trough 11, the first detection piece 612 matches the third sensor 615.

[0070] The third sensor 615 is also communicatively connected to the driver 54. The driver 54 can determine the origin position of the adjustment plate 30 based on the signal from the third sensor 615. After the powder in the first slot 31 or the second slot 32 is emptied from the discharge chute 21, the driver 54 can drive the adjustment plate 30 to move until the first detection piece 612 matches the third sensor 615. At this point, the adjustment plate 30 stops moving and remains at the origin position, awaiting the next material removal process.

[0071] The second detection mechanism 62 further includes a sixth sensor 625, and the sixth sensor 625 is also communicatively connected to the driver 54. The sixth sensor 625 is disposed at intervals along the second direction B between the fourth sensor 623 and the fifth sensor 624. When the adjusting plate 30 moves to make the first through groove 31 correspond to the feeding groove 11, and the discharging groove 21 is located between the first through groove 31 and the second through groove 32, and when the adjusting plate 30 covers the discharging groove 21, the second detection piece 622 is matched with the sixth sensor 625.

[0072] In this way, when the first through groove 31 corresponds and communicates with the feeding groove 11, on the one hand, the driver 54 can judge the alignment information between the first through groove 31 and the feeding groove 11 according to the signal of the first sensor 613, and on the other hand, it can judge that the discharging groove 21 is in a closed state through the signal of the sixth sensor 625, ensuring that the powder will not leak during the powder taking process.

[0073] Through the constraints of the positional relationship, dimensional relationship, etc. among the foregoing first through groove 31, second through groove 32, feeding groove 11, and discharging groove 21, when the second through groove 32 communicates with the feeding groove 11, although the second detection piece 622 is not paired with the sixth sensor 625, the adjusting plate 30 can still cover the discharging groove 21 to avoid material leakage.

[0074] In some embodiments, the sixth sensor 625 is also arranged offset from the fourth sensor 623 and the fifth sensor 624 along the third direction C. The second detection piece 622 includes two induction pieces, one of which is arranged corresponding to the fourth sensor 623 and the fifth sensor 624, and the other is arranged corresponding to the sixth sensor 625. In this way, it is beneficial to improve the detection accuracy.

[0075] In some embodiments, the sliding bracket 532 includes a first part 5321, a second part 5322, and a third part 5323. The first part 5321 is slidably matched with the linear guide 531. The second part 5322 is connected to the side of the first part 5321 away from the driver 54, and the second part 5322 extends along the second direction B. The third part 5323 is connected to the end of the second part 5322 away from the first part 5321, and the third part 5323 extends along the first direction A. The connecting plate 52 is arranged on the side of the third part 5323 facing the feeding plate 10. In this way, the sliding bracket 532 can effectively avoid other structures of the driving assembly 50 to connect and drive the adjusting plate 30, ensure the smooth movement of the adjusting plate 30, and can also improve the overall structural compactness of the device through reasonable layout.

[0076] Please refer to Figure 15, An embodiment of the present application further provides a 3D printing device 200, which includes a printing box body 201 and the powder taking device 100 for the 3D printing device 200 described in the above embodiment. The powder taking device 100 for the 3D printing device 200 is arranged in the printing box body 201.

[0077] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A powder picking device for a 3D printing device, characterized in that, include: A feed plate, with a feed trough extending through the feed plate along a first direction; A discharge plate is fixedly connected to one side of the feed plate along a first direction, the discharge plate is provided with a discharge trough penetrating the discharge plate along the first direction, and the discharge trough and the feed trough are staggered along a second direction; an adjusting plate movably disposed between the feed plate and the discharge plate, the adjusting plate being provided with a first through slot and a second through slot, the first through slot and the second through slot penetrating the adjusting plate along the first direction and spaced apart along the second direction; along the second direction, the width of the first through slot is greater than the width of the second through slot, and the distance between a side of the feed slot away from the discharge slot and a side of the discharge slot close to the feed slot is greater than the width of the first through slot; a guide structure provided at an end of the adjustment plate along a third direction, wherein the first direction, the second direction and the third direction intersect each other, and the guide structure extends along the second direction and is movably engaged with the feed plate and / or the discharge plate; A driving assembly is connected to the adjustment plate in a transmission manner and is used to drive the adjustment plate to move back and forth along the second direction to switch the corresponding relationship between the first through slot or the second through slot and the feed slot or the discharge slot.

2. The powder collecting device for 3D printing equipment according to claim 1, characterized in that: The guide structure includes a first protrusion, which is provided on a side of the adjustment plate facing the feed plate along the first direction; the feed plate is provided with a first chute, which extends along the second direction, and the first protrusion is received in the first chute; and / or, The guide structure includes a second protrusion, which is arranged on the side of the adjustment plate facing the discharge plate along the first direction; the discharge plate is provided with a second slide groove, which extends along the second direction, and the second protrusion is accommodated in the second slide groove.

3. The powder collecting device for 3D printing equipment according to claim 1, characterized in that: Along the first direction, a first matching groove is provided on a side of the feed plate facing the adjustment plate, and a second matching groove is provided on a side of the discharge plate facing the adjustment plate, and the adjustment plate is accommodated in the first matching groove and the second matching groove; The guide structure includes a sliding member. Along the third direction, the side wall of the first matching groove is provided with a first guide rail, and the sliding member slides with the first guide rail, and / or the side wall of the second matching groove is provided with a second guide rail, and the sliding member slides with the second guide rail.

4. The powder collecting device for 3D printing equipment according to claim 1, characterized in that: Along the second direction, the distance between the side of the feed trough away from the discharge trough and the side of the discharge trough close to the feed trough is L1, and the width of the first through-groove is a, wherein L1>a.

5. The powder collecting device for 3D printing equipment according to claim 1, characterized in that: The driving assembly includes a mounting plate, a connecting plate, a guiding mechanism, and a driver. The mounting plate is fixedly connected to the feeding plate or the discharging plate. The connecting plate is fixedly connected to the adjusting plate. The guiding mechanism and the driver are assembled to the mounting plate. The guiding mechanism is arranged along the second direction. The connecting plate is in transmission connection with the guiding mechanism. The driver is in transmission connection with the guiding mechanism and is used to drive the connecting plate to move along the guiding mechanism.

6. The powder taking device for a 3D printing device according to claim 5, characterized in that, It further includes: a detection assembly configured on the mounting plate for detecting the position of the connecting plate, and the detection assembly is communicatively connected to the driver.

7. The powder taking device for a 3D printing device according to claim 6, characterized in that The detection assembly includes: a first detection mechanism including a first bracket, a first detection piece, a first inductor, and a second inductor. The first bracket is configured on the mounting plate. The first detection piece is fixedly arranged relative to the connecting plate. The first inductor and the second inductor are arranged at intervals along the second direction on the first bracket and are used to detect the corresponding relationship between the first through slot, the second through slot, and the feeding slot. a second detection mechanism including a second bracket, a second detection piece, a fourth inductor, and a fifth inductor. The second bracket is configured on the mounting plate. The second detection piece is fixedly arranged relative to the connecting plate. The fourth inductor and the fifth inductor are arranged at intervals along the second direction on the second bracket and are used to detect the corresponding relationship between the first through slot, the second through slot, and the discharging slot.

8. The powder taking device for a 3D printing device according to claim 7, wherein: The first detection mechanism further includes a third inductor. The third inductor is arranged at intervals along the second direction between the first inductor and the second inductor. When the adjusting plate moves to a position where the feeding slot is between the first through slot and the second through slot and the adjusting plate covers the feeding slot, the first detection piece matches with the third inductor. The second detection mechanism further includes a sixth inductor. The sixth inductor is arranged at intervals along the second direction between the fourth inductor and the fifth inductor. When the adjusting plate moves to a position where the first through slot corresponds to the feeding slot, the discharging slot is between the first through slot and the second through slot, and the adjusting plate covers the discharging slot, the second detection piece matches with the sixth inductor.

9. The powder taking device for a 3D printing device according to claim 1, wherein: Along the first direction, sealing grooves are respectively arranged on opposite two side surfaces of the adjusting plate, and sealing members are filled in the sealing grooves. The sealing members are in sealing cooperation with the feeding plate or the discharging plate.

10. A 3D printing device, characterized in that, It includes a printing box body and the powder taking device for a 3D printing device according to any one of claims 1-9. The powder taking device for a 3D printing device is configured in the printing box body.

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