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

Abstract

The present application provides a powder collection device for a 3D printing device and a 3D printing device. Among them, the powder collection device for a 3D printing device includes a feed plate, a discharge plate, an adjustment plate, a guide structure and a drive assembly. The feed plate is provided with a through feed trough. The discharge plate is fixedly connected to one side of the feed plate, and the discharge plate is provided with a through discharge trough, and the discharge trough and the feed trough are staggered. The adjustment plate is movably arranged between the feed plate and the discharge plate, and the adjustment plate is provided with a first through groove and a second through groove, the width of the first through groove is greater than the width of the second through groove, 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 groove. The guide structure is arranged at the end of the adjustment plate. The drive assembly is transmission-connected to the adjustment plate, driving the adjustment plate to reciprocate along the second direction, switching the corresponding relationship between the first through groove or the second through groove and the feed trough or the discharge trough. In this way, stable movement of the material collection structure and accurate adjustment of the powder collection 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:

[0006] 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.

[0007] In this way, the adjustment plate is driven to move back and forth along the second direction by the driving component, and the movement of the adjustment plate can be guided by the guide structure, thereby improving the movement stability of the powder taking structure. The amount of powder taken is determined by the volume 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 adjustment plate to move so that the first through-groove is first connected to the corresponding feed trough to quantitatively obtain powder, and then connected to the corresponding discharge trough to allow the larger amount of powder obtained to fall into the discharge trough. When it is necessary to reduce the amount of powder taken, the driving component can drive the adjustment plate to move so that the second through-groove is first connected to the corresponding feed trough to quantitatively obtain powder, and then connected to the corresponding discharge trough to allow the smaller amount of powder obtained to fall into the discharge trough. The stable movement of the adjustment plate, and the coordinated cooperation between the first through-groove and the second through-groove of different widths and the feed trough and the discharge trough, achieve stable adjustment of the powder taken, improve the accuracy of powder amount adjustment, and reduce powder waste.

[0008] In a possible embodiment: the guide structure includes a first protrusion, which is arranged on the side of the adjustment plate facing the feed plate along the first direction; the feed plate is provided with a first slide groove, which extends along the second direction, and the first protrusion is accommodated in the first slide groove.

[0009] In a possible embodiment: 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.

[0010] In one possible embodiment, along the first direction, the feed plate is provided with a first mating groove on a side facing the adjustment plate, and the discharge plate is provided with a second mating groove on a side facing the adjustment plate, with the adjustment plate being received in the first and second mating grooves. The guide structure includes a sliding member, and along the third direction, a first guide rail is provided on the sidewall of the first mating groove, with the sliding member slidably mating with the first guide rail, and / or a second guide rail is provided on the sidewall of the second mating groove, with the sliding member slidably mating with the second guide rail.

[0011] In a possible implementation: 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.

[0012] In a possible embodiment: the driving assembly includes a mounting plate, a connecting plate, a guide mechanism and a driver, the mounting plate is fixedly connected to the feed plate or the discharge plate, the connecting plate is fixedly connected to the adjustment plate, the guide mechanism and the driver are assembled to the mounting plate, the guide mechanism is arranged along the second direction, the connecting plate is transmission-connected to the guide mechanism, and the driver is transmission-connected to the guide mechanism, for driving the connecting plate to move along the guide mechanism.

[0013] In a possible implementation manner, the powder collecting device further includes a detection component, which is configured on the mounting plate and is used to detect the position of the connecting plate, and the detection component is communicatively connected to the driver.

[0014] In one possible embodiment: the detection component includes: a first detection mechanism, including a first bracket, a first detection piece, a first sensor, and a second sensor, the first bracket is configured on the mounting plate, the first detection piece is fixed relative to the connecting plate, the first sensor and the second sensor are spaced apart on the first bracket along the second direction, for detecting the correspondence between the first through slot, the second through slot and the feed trough; a second detection mechanism, including a second bracket, a second detection piece, a fourth sensor and a fifth sensor, the second bracket is configured on the mounting plate, the second detection piece is fixed relative to the connecting plate, the fourth sensor and the fifth sensor are spaced apart on the second bracket along the second direction, for detecting the correspondence between the first through slot, the second through slot and the discharge trough.

[0015] In one possible embodiment, the first detection mechanism further includes a third sensor, the third sensor being spaced apart along the second direction between the first sensor and the second sensor. When the adjustment plate moves to the feed trough and is located between the first through-slot and the second through-slot, and the adjustment plate covers the feed trough, the first detection sheet mates with the third sensor. The second detection mechanism further includes a sixth sensor, the sixth sensor being spaced apart along the second direction between the fourth sensor and the fifth sensor. When the adjustment plate moves to the first through-slot and corresponds to the feed trough, and the discharge trough is located between the first through-slot and the second through-slot, and the adjustment plate covers the discharge trough, the second detection sheet mates with the sixth sensor.

[0016] In a possible implementation manner: along the first direction, sealing grooves are respectively provided on two opposite side surfaces of the adjustment plate, the sealing grooves are filled with sealing members, and the sealing members are sealed with the feed plate or the discharge plate.

[0017] An embodiment of the present application further provides a 3D printing device, comprising a printing box and the powder collecting device for the 3D printing device described in the above embodiment, wherein the powder collecting device for the 3D printing device is configured in the printing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order 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 certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of a powder collecting device for 3D printing equipment according to an embodiment of the present application.

[0020] Figure 2 for Figure 1 The schematic diagram of the structure of the powder taking device shown in another direction.

[0021] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the powder taking device shown.

[0022] Figure 4 for Figure 1 The partial structural exploded view of the powder extraction device shown.

[0023] Figure 5 for Figure 1 The cross-sectional structure diagram of the powder taking device along the VV direction is shown.

[0024] Figure 6 for Figure 5 The cross-sectional structural diagram of the powder collecting device shown in another state.

[0025] Figure 7 for Figure 5 The cross-sectional structural diagram of the powder collecting device shown in another state.

[0026] Figure 8 for Figure 5 The cross-sectional structural diagram of the powder collecting device shown in another state.

[0027] Figure 9 for Figure 1 An enlarged view of the local structure of the powder collecting device is shown.

[0028] Figure 10 for Figure 4 An enlarged view of the local structure of the adjustment plate in the structure shown.

[0029] Figure 11Schematic diagram of the structure of the driving assembly in the powder collecting device shown in one embodiment.

[0030] Figure 12 for Figure 11 A schematic diagram of the structure of the drive assembly shown in another direction.

[0031] Figure 13 for Figure 11 Schematic diagram of the exploded structure of the drive assembly shown.

[0032] Figure 14 for Figure 11 Schematic diagram of the exploded structure of the drive assembly shown in another direction.

[0033] Figure 15 FIG. 1 is a simplified structural diagram of a 3D printing device in one embodiment.

[0034] Description of main component symbols:

[0035] Powder collecting device 100

[0036] Feed plate 10

[0037] Feed trough 11

[0038] First chute 12

[0039] First matching groove 13

[0040] First guide rail 14

[0041] Avoidance slot 15

[0042] Discharge plate 20

[0043] Discharge chute 21

[0044] Second chute 22

[0045] Second matching groove 23

[0046] Second guide rail 24

[0047] Adjustment plate 30

[0048] First through groove 31

[0049] Second through groove 32

[0050] Sealing groove 33

[0051] Seal 34

[0052] Guide structure 40

[0053] First bump 41

[0054] Second bump 42

[0055] Slider 43

[0056] Drive assembly 50

[0057] Mounting plate 51

[0058] Connecting plate 52

[0059] Guide mechanism 53

[0060] Linear Guide 531

[0061] Sliding bracket 532

[0062] Part 15321

[0063] Part II 5322

[0064] Part III 5323

[0065] Drive 54

[0066] Detection component 60

[0067] First detection mechanism 61

[0068] First bracket 611

[0069] First detection piece 612

[0070] First sensor 613

[0071] Second sensor 614

[0072] The third sensor 615

[0073] Second detection mechanism 62

[0074] Second bracket 621

[0075] Second detection piece 622

[0076] Fourth sensor 623

[0077] Fifth sensor 624

[0078] Sixth Sensor 625

[0079] Baffle 70

[0080] 3D printing equipment 200

[0081] Printing box 201

[0082] The following specific implementation methods will further illustrate this application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0083] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0084] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be an element centered therein. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be an element centered therein. When an element is considered to be "set on" another element, it may be directly set on the other element or there may also be an element centered therein. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0085] 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" as used herein includes any and all combinations of one or more of the relevant listed items.

[0086] Some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0087] See also 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 connected to the adjustment plate 30 for driving 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 .

[0088] 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.

[0089] See also Figures 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 trough 11 is c, and the width of the discharge trough 21 is d. Wherein, d ≥ a > b, to ensure that when the first through-slot 31 or the second through-slot 32 is correspondingly connected to the discharge trough 21, the powder in the first through-slot 31 or the second through-slot 32 can completely fall into the discharge trough 21. The first through-slot 31 and the second through-slot 32 are both through-slots that vertically penetrate the adjustment plate 30. The width a of the first through-slot 31 is greater than the width b of the second through-slot 32. In this way, 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 connected to the feed trough 11, the powder can fall into the first through-slot 31 or the second through-slot 32 through the feed trough 11. The total amount of powder in the trough when the powder fills the first through-slot 31 or the second through-slot 32 is the single powder extraction amount. 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 in corresponding communication with the feed trough 11. When the powder extraction amount needs to be increased, the drive assembly 50 can drive the adjustment plate 30 to move in the second direction B so that the first through-slot 31 is in corresponding communication with the feed trough 11. The width c of the feed trough 11 can be greater than the width a of the first through-slot 31, or less than or equal to the width a of the first through-slot 31, as long as the powder fills the first through-slot 31 or the second through-slot 32. The present application is not limited to this.

[0090] In some embodiments, the distance between the side of the feed trough 11 away from the discharge trough 21 and the side of the discharge trough 21 close to the feed trough 11 is L1, that is, in the perspective of the figure, the distance between the left side of the feed trough 11 and the left side of the discharge trough 21 is L1. The distance between the side of the first through-groove 31 away from the second through-groove 32 and the side of the second through-groove 32 away from the first through-groove 31 is L2. That is, in the perspective of the figure, the distance between the left side of the first through-groove 31 and the right side of the second through-groove 32 is L2. Among them, L1<L2, L1>a, so as to ensure that when the first through-groove 31 or the second through-groove 32 is connected to the feed trough 11, the discharge trough 21 can be staggered with the first through-groove 31 or the second through-groove 32, so as to avoid the powder from falling from the first barrel trough or the second through-groove 32 into the discharge trough 21 during the feeding process, thereby affecting the accuracy of the powder amount adjustment.

[0091] The distance between the opposing 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 drive assembly 50. When the adjustment plate 30 moves until the first through-slot 31 is connected to the feed chute 11, the discharge chute 21 is located between the first and second through-slots 31, 32, along the second direction B. The area of ​​the adjustment plate 30 between the first and second through-slots 31, 32 covers the discharge chute 21, ensuring that powder does not leak from the discharge chute 21 during the feeding process.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] Please refer again Figures 1 to 3In some embodiments, the opposing surfaces of the adjustment plate 30 are clearance-matched with the feed plate 10 and the discharge plate 20, respectively, to allow the adjustment plate 30 to slide smoothly between them. The width of the feed plate 10 is substantially the same as that of the discharge plate 20, while the width of the adjustment plate 30 is smaller than that of the feed plate 10. During reciprocating movement in the second direction B, the adjustment plate 30 does not extend beyond the outer surfaces of the feed plate 10 and the discharge plate 20, thereby reducing the risk of accidental detachment of the adjustment plate 30 and powder leakage.

[0097] In some embodiments, the reclaiming device further includes baffles 70. Along the second direction B, a plurality of baffles 70 are disposed on opposite sides of the feed plate 10 and the discharge plate 20, shielding the adjustment plate 30 and thereby further reducing the risk of accidental detachment of the adjustment plate 30 and powder leakage. The plurality of baffles 70 may be one baffle 70 or two or more baffles 70, as long as the design requirements are met, and this application is not limited thereto.

[0098] See also Figure 2 、 Figure 3 and Figure 9 In some embodiments, the guide structure 40 includes a first protrusion 41, which is disposed along the first direction A on the side of the adjustment plate 30 facing the feed plate 10. The feed plate 10 is provided with a first chute 12, which extends along the second direction B. The first protrusion 41 is received in the first chute 12. As the adjustment plate 30 moves along the second direction B, the first protrusion 41 slides in engagement with the first chute 12, guiding the movement of the adjustment plate 30 and improving the stability of the movement of the adjustment plate 30.

[0099] In some embodiments, the guide structure 40 includes a second protrusion 42, which is disposed on a side of the adjustment plate 30 facing the discharge plate 20 along the first direction A. The discharge plate 20 is provided with a second chute 22, which extends along the second direction B. The second protrusion 42 is received in the second chute 22. As the adjustment plate 30 moves along the second direction B, the second protrusion 42 slidably engages with the second chute 22, guiding the movement of the adjustment plate 30 and further improving the movement stability of the adjustment plate 30.

[0100] In an embodiment of the present application, the first protrusion 41, the first slide groove 12, the second protrusion 42, and the second slide groove 22 are respectively located on different surfaces of the adjustment plate 30. In other embodiments, the adjustment plate 30 may also be provided with a combination of the first protrusion 41 and the first slide groove 12, or a combination of the second protrusion 42 and the second slide groove 22 only on a single side surface.

[0101] In some embodiments, along the first direction A, the feed plate 10 is provided with a first mating groove 13 on a side facing the adjustment plate 30, and the discharge plate 20 is provided with a second mating groove 23 on a side facing the adjustment plate 30, so that the first mating groove 13 and the second mating groove 23 are arranged opposite and in communication. The adjustment plate 30 is accommodated in the first mating groove 13 and the second mating groove 23. The adjustment plate 30 can reciprocate in 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 trough 11 and the discharge trough 21. The guide structure 40 includes a sliding member 43. Along the third direction C, the side wall of the first mating groove 13 is provided with a first guide rail 14, and the sliding member 43 is slidably engaged with the first guide rail 14, and / or the side wall of the second mating groove 23 is provided with a second guide rail 24, and the sliding member 43 is slidably engaged with the second guide rail 24.

[0102] In this way, the movement direction of the adjustment plate 30 can be guided by the first guide rail 14 and the slider 43, or the second guide rail 24 and the slider 43, further improving the movement stability of the adjustment plate 30. In some embodiments, the guide assembly may include only the protrusions 41, 42 and the chute 12, 22, or only the guide rails 14, 24 and the slider 43. In other embodiments, the protrusions 41, 42 and the chute 12, 22, or the guide rails 14, 24 and the slider 43 may be provided simultaneously. This is sufficient to meet design requirements, and this application is not limited thereto.

[0103] See also Figures 3 to 10 In some embodiments, sealing grooves 33 are provided on opposite sides of the adjustment plate 30 along the first direction A. These sealing grooves 33 are filled with sealing members 34, which seal against the feed plate 10 or the discharge plate 20. This prevents powder from leaking out of the powder collection device 100 through the gap between the adjustment plate 30 and the feed plate 10 or the discharge plate 20 during movement, thereby affecting the printing process.

[0104] In some embodiments, the first through slot 31 includes a plurality of sub-slots arranged in parallel along the third direction C to improve powder collection uniformity. In some embodiments, the second through slot 32 may also include a plurality of sub-slots arranged in parallel along the third direction C.

[0105] In other embodiments, the first through groove 31 and / or the second through groove 32 may also be long strip-shaped through grooves extending along the third direction C, as long as the design requirements are met, and the present application is not limited thereto.

[0106] In some embodiments, the sealing groove 33 is a rectangular ring-shaped structure, disposed around the circumference of the surface of the adjustment plate 30, with the first through-groove 31 and the second through-groove 32 located within the area surrounded by the sealing groove 33 to ensure a good sealing effect. In other embodiments, the sealing groove 33 may have other shapes as long as it surrounds the first through-groove 31 and the second through-groove 32.

[0107] See also Figures 11 to 14 In some embodiments, the driving assembly 50 includes a mounting plate 51, a connecting plate 52, a guide mechanism 53 and a driver 54. The mounting plate 51 is fixedly connected to the feed plate 10 or the discharge plate 20, the connecting plate 52 is fixedly connected to the adjustment plate 30, the guide mechanism 53 and the driver 54 are assembled to the mounting plate 51, the guide mechanism 53 is arranged along the second direction B, the connecting plate 52 is transmission-connected to the guide mechanism 53, and the driver 54 is transmission-connected to the guide mechanism 53, for driving the connecting plate 52 to move along the guide mechanism 53.

[0108] In this way, the driver 54 , the guide mechanism 53 , etc. can be assembled together with the feed plate 10 through the mounting plate 51 , making the overall structure compact, and also ensuring the stability and reliability of the adjustment movement through the guide mechanism 53 and the connecting plate 52 .

[0109] In one embodiment, the mounting plate 51 is fixedly connected to the discharge plate 20. A positioning block 25 is provided on the side of the discharge plate 20 facing the drive assembly 50, and a positioning groove 511 is provided on the mounting plate 51. The positioning block 25 engages with the positioning groove 511 and abuts against the sidewalls of the positioning groove 511 to locate the mounting plate 51 and the discharge plate 20, facilitating operations such as screw tightening and reducing installation difficulty.

[0110] In some embodiments, the guide mechanism 53 includes a linear guide rail 531 and a sliding bracket 532. The output end of the driver 54 is 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 activated, it can drive the sliding bracket 532 to move back and forth along the linear guide rail 531. The connecting plate 52 is fixedly disposed on the side of the sliding bracket 532 facing the adjustment plate 30 and is fixedly connected to the adjustment plate 30 to drive the adjustment plate 30 and the sliding bracket 532 to move synchronously. The feed plate 10 is also provided with an airtight groove 15 on the side facing the sliding bracket 532 to ensure the movement range of the adjustment plate 30.

[0111] See also Figures 12 to 14In some embodiments, the powder collecting device 100 further includes a detection assembly 60 disposed on the mounting plate 51 for detecting the position of the connecting plate 52. The detection assembly 60 is communicatively connected to the driver 54. In this manner, the driver 54 can control the movement distance of the adjustment plate 30 based on the detection signal from the detection assembly 60, thereby accurately controlling the correspondence between the first and second through-slots 31 and 32 and the feed and discharge troughs 11 and 21, thereby improving the accuracy of powder adjustment.

[0112] In one embodiment, the detection assembly 60 includes: a first detection mechanism 61, including a first bracket 611, a first detection piece 612, a first sensor 613, and a second sensor 614, the first bracket 611 is configured on the mounting plate 51, the first detection piece 612 is fixed relative to the connecting plate 52, the first sensor 613 and the second sensor 614 are spaced apart on the first bracket 611 along the second direction B, for detecting the correspondence between the first through slot 31, the second through slot 32 and the feed trough 11; a second detection mechanism 62, including a second bracket 621, a second detection piece 622, a fourth sensor 623 and a fifth sensor 624, the second bracket 621 is configured on the mounting plate 51, the second detection piece 622 is fixed relative to the connecting plate 52, the fourth sensor 623 and the fifth sensor 624 are spaced apart on the second bracket 621 along the second direction B, for detecting the correspondence between the first through slot 31, the second through slot 32 and the discharge trough 21.

[0113] Specifically, the first bracket 611 and the second bracket 621 are staggered on the mounting plate 51. This allows for adaptability to different positions of the feed chute 11, the discharge chute 21, and the like, and also prevents interference with detection that could affect detection accuracy. In the present embodiment, the discharge chute 21 is closer to the driver 54 than the feed chute 11. Along the second direction B, the second bracket 621 is spaced apart from the first bracket 611 on the side away from the feed plate 10. The first and second detection plates 612, 622 are fixedly mounted on the sliding bracket 532 and staggered to correspond to the first and second brackets 611, 621, respectively.

[0114] Along the second direction B, the second sensor 614 is spaced apart and located on the side of the first sensor 613 facing the feed plate 10. If the powder extraction amount needs to be increased, the driver 54 drives the sliding bracket 532 to move toward the feed plate 10. When the first through slot 31 and the feed trough 11 are correspondingly connected, the first detection piece 612 is paired with the first sensor 613. At this time, the driver 54 stops the adjustment plate 30 based on the signal from the first sensor 613, waits a preset time for the first through slot 31 to be filled with powder, and then drives the adjustment plate 30 to move in the opposite direction, so that the first through slot 31 filled with powder is correspondingly connected to the discharge trough 21.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] The second detection mechanism 62 further includes a sixth sensor 625, which is also communicatively connected to the driver 54. The sixth sensor 625 is spaced apart between the fourth sensor 623 and the fifth sensor 624 along the second direction B. When the adjustment plate 30 moves to the first through-slot 31 to correspond with the feed chute 11, the discharge chute 21 is located between the first through-slot 31 and the second through-slot 32, and the adjustment plate 30 covers the discharge chute 21, the second detection piece 622 mates with the sixth sensor 625.

[0121] In this way, when the first through groove 31 is connected to the feed trough 11, the driver 54 can, on the one hand, determine the alignment information of the first through groove 31 and the feed trough 11 based on the signal of the first sensor 613, and on the other hand, determine that the discharge trough 21 is in a closed state through the signal of the sixth sensor 625, thereby ensuring that the powder will not leak during the powder removal process.

[0122] Through the constraints of the positional relationship, dimensional relationship, etc. between the aforementioned first through slot 31, the second through slot 32, the feed slot 11, and the discharge slot 21, when the second through slot 32 is connected to the feed slot 11, even though the second detection piece 622 and the sixth sensor 625 are not paired, the adjustment plate 30 can still cover the discharge slot 21 to avoid leakage.

[0123] In some embodiments, the sixth sensor 625 is further staggered with the fourth sensor 623 and the fifth sensor 624 along the third direction C. The second detection sheet 622 includes two sensing sheets, one of which is disposed corresponding to the fourth sensor 623 and the fifth sensor 624, and the other is disposed corresponding to the sixth sensor 625. This helps improve detection accuracy.

[0124] In some embodiments, the sliding bracket 532 includes a first portion 5321, a second portion 5322, and a third portion 5323. The first portion 5321 is slidably engaged with the linear guide rail 531. The second portion 5322 is connected to a side of the first portion 5321 away from the driver 54, and the second portion 5322 extends along the second direction B. The third portion 5323 is connected to an end of the second portion 5322 away from the first portion 5321, and the third portion 5323 extends along the first direction A. The connecting plate 52 is disposed on a side of the third portion 5323 facing the feed plate 10. In this way, the sliding bracket 532 can effectively avoid other structures of the drive assembly 50 to connect and drive the adjustment plate 30, ensure the smooth movement of the adjustment plate 30, and improve the overall structural compactness of the device through reasonable layout.

[0125] See also Figure 15An embodiment of the present application further provides a 3D printing device 200, comprising a printing box 201 and the powder collecting device 100 for the 3D printing device 200 described in the above embodiment, wherein the powder collecting device 100 for the 3D printing device 200 is configured in the printing box 201.

[0126] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent replacements of the technical solutions of the present application should not depart from the spirit and scope of the technical solutions of the present application.

Claims

1. A powder collecting device for 3D printing equipment, 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, drivingly connected to the adjustment plate, for driving the adjustment plate to reciprocate along the second direction, switching the corresponding relationship between the first through slot or the second through slot and the feed trough or the discharge trough; 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 driving assembly includes a mounting plate, a connecting plate, a guide mechanism and a driver, the mounting plate is fixedly connected to the feed plate or the discharging plate, the connecting plate is fixedly connected to the adjusting plate, the guide mechanism and the driver are assembled to the mounting plate, the guide mechanism is arranged along the second direction, the connecting plate is transmission-connected to the guide mechanism, and the driver is transmission-connected to the guide mechanism for driving the connecting plate to move along the guide mechanism; the guide mechanism includes a linear guide rail and a sliding bracket, the output end of the driver is transmission-connected to the linear guide rail, the sliding bracket is assembled on the linear guide rail, the connecting plate is fixedly arranged on a side of the sliding bracket facing the adjusting plate, and is fixedly connected to the adjusting plate, and the feed plate is also provided with an air avoidance groove on a side facing the sliding bracket; A detection component is configured on the mounting plate and is used to detect the position of the connecting plate. The detection component is communicatively connected to the driver. The detection component includes: A first detection mechanism includes a first bracket, a first detection sheet, a first sensor, and a second sensor, wherein the first bracket is configured on the mounting plate, the first detection sheet is fixed relative to the connecting plate, and the first sensor and the second sensor are spaced apart 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 feed chute; The second detection mechanism includes a second bracket, a second detection piece, a fourth sensor and a fifth sensor. The second bracket is configured on the mounting plate, the second detection piece is fixed relative to the connecting plate, and the fourth sensor and the fifth sensor are spaced apart on the second bracket along the second direction, and are used to detect the corresponding relationship between the first through groove, the second through groove and the discharge trough.

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: 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 first detection mechanism further includes a third sensor, the third sensor being spaced apart along the second direction between the first sensor and the second sensor, and the first detection piece matches the third sensor when the adjustment plate moves to the feed chute and is located between the first through slot and the second through slot, and the adjustment plate covers the feed chute; The second detection mechanism also includes a sixth sensor, which is arranged between the fourth sensor and the fifth sensor along the second direction. The adjustment plate moves to the first through slot to correspond to the feed slot, and the discharge slot is located between the first through slot and the second through slot. When the adjustment plate covers the discharge slot, the second detection piece matches the sixth sensor.

6. The powder collecting device for 3D printing equipment according to claim 1, characterized in that: Along the first direction, sealing grooves are respectively provided on the two opposite side surfaces of the adjustment plate, and the sealing grooves are filled with sealing members, and the sealing members are sealed with the feed plate or the discharge plate.

7. A 3D printing device, characterized in that: The invention comprises a printing box and a powder collecting device for 3D printing equipment according to any one of claims 1 to 6, wherein the powder collecting device for 3D printing equipment is arranged in the printing box.

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