Powder screening equipment for additive manufacturing

Abstract

The utility model provides powder screening equipment for additive manufacturing, and relates to the technical field of additive manufacturing. The powder screening equipment for additive manufacturing comprises a box body, a hole brushing mechanism and a screening mechanism. A feeding piece is arranged on the upper portion of the box body, and a discharging piece is arranged on the lower portion of the box body. The hole brushing mechanism comprises a first motor, a rotating rod and a plurality of brush pieces; the first motor is installed on the box body, the rotating rod is pivoted to the box body, the rotating rod is in transmission connection with the first motor, and the brush piece is fixedly connected with the rotating rod; the screening mechanism comprises a second motor, a first gear, a screening cylinder and a first rack; the first gear is provided with an idling part. According to the powder screening equipment for additive manufacturing, the technical problem that when existing powder screening equipment for additive manufacturing is used for screening powder, fine powder, wet powder and the like are prone to remaining in screening holes, and the production efficiency of powder screening is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of additive manufacturing, in particular to a powder screening device for additive manufacturing. Background Art

[0002] Additive manufacturing is a "bottom-up" manufacturing method that uses digital technology material printers to construct objects by printing layer by layer based on 3D model files.

[0003] The powder used in additive manufacturing is the basic material in the additive manufacturing process. It is stacked and solidified layer by layer to form a product. The particle size distribution of the powder affects the manufacturing accuracy. Before the powder is used, it needs to be screened. However, when the existing powder screening equipment for additive manufacturing screens the powder, some fine, wet or sticky powder is easily retained in the screening holes of the powder screening equipment, affecting the production efficiency of powder screening.

[0004] The inventors have found at least the following problems in the process of implementing this embodiment:

[0005] In existing powder screening equipment for additive manufacturing, fine and moist powders are easily retained in the screening holes when screening powders, which affects the low production efficiency of powder screening. Utility Model Content

[0006] The purpose of the utility model is to provide a powder screening device for additive manufacturing, which solves the technical problem that in the existing powder screening device for additive manufacturing, fine and moist powders are easily retained in the screening holes when screening powders, thus affecting the low production efficiency of powder screening.

[0007] Utility model solution:

[0008] The utility model provides a powder screening device for additive manufacturing, comprising a box body, a brush hole mechanism and a screening mechanism; a feed piece is provided on the upper part of the box body, and a discharge piece is provided on the lower part thereof; the brush hole mechanism comprises a first motor, a rotating rod and a plurality of brush pieces; the first motor is mounted on the box body, the rotating rod is pivoted to the box body, the rotating rod is transmission-connected to the first motor, and the brush piece is fixedly connected to the rotating rod; the screening mechanism comprises a second motor, a first gear, a screening drum and a first rack; the second motor is fixedly mounted inside the box body, the first gear is provided with an idle part, and the first gear is transmission-connected to the second motor; the screening drum is pivoted to the box body, is located below the brush piece, and is against the brush piece in the operating state; the first gear is fixedly mounted at one end of the screening drum, and the first gear is transmission-connected to the first rack.

[0009] Furthermore, the brush member includes a fixed plate and a plurality of brushes, the fixed plate is provided with a plurality of filtering holes, one side of the fixed plate is fixedly connected to the rotating rod, and the brush is fixedly connected to the other side of the fixed plate.

[0010] Furthermore, the box body is detachably mounted with a filter element, and the filter element is fixedly connected with a handle.

[0011] Furthermore, the screening cylinder is provided with an arc-shaped groove.

[0012] Furthermore, the bottom of the box is fixedly connected to the supporting legs.

[0013] Beneficial effects:

[0014] The utility model provides a powder screening device for additive manufacturing. When in use, the powder to be screened is placed in a feed part of a box, and the powder falls onto a brush part and a screening cylinder. The first motor drives the rotating rod to rotate, and the rotating rod drives the brush part to rotate. The brush part causes the powder to roll in the box. At the same time, the second motor is started, and the second motor drives the first gear to rotate. The rotation of the first gear drives the first rack to rotate, and the rotation of the first rack drives the screening cylinder to rotate. When the idle part meets the rack, the first rack returns to its original position, so that the screening cylinder can reciprocate. The brush part rolls the powder in the box, and also brushes the screening holes in the screening cylinder. In this type of powder screening device for additive manufacturing, when screening powder, the powder is not easily retained in the screening holes, and the production efficiency of powder screening is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of a powder screening device for additive manufacturing provided in this embodiment;

[0017] Figure 2 A schematic diagram of the structure of the powder screening equipment for additive manufacturing provided in this embodiment.

[0018] icon:

[0019] 100-box; 110-feeding piece; 120-discharging piece; 130-filtering piece; 131-handle; 140-supporting leg;

[0020] 200-brush hole mechanism; 210-first motor; 220-rotating rod; 230-brush member; 240-fixing plate; 241-filter hole; 250-brush;

[0021] 300 - screening mechanism; 310 - second motor; 320 - first gear; 321 - idling part; 330 - screening cylinder; 331 - arc groove; 340 - first rack. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the utility model, it should be noted that unless otherwise clearly stipulated and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0027] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0028] This embodiment provides a powder screening device for additive manufacturing, please refer to Figure 1-2 As shown, it includes a box body 100, a brush hole mechanism 200 and a screening mechanism 300; the upper part of the box body 100 is provided with a feed member 110, and the lower part thereof is provided with a discharge member 120; the brush hole mechanism 200 includes a first motor 210, a rotating rod 220 and a plurality of brush members 230; the first motor 210 is installed on the box body 100, the rotating rod 220 is pivotally connected to the box body 100, the rotating rod 220 is transmission-connected to the first motor 210, and the brush member 230 is fixedly connected to the rotating rod 220; the screening mechanism 300 includes a second motor 310, a first gear 320, a screening drum 330 and a first rack 340; the second motor 310 is fixedly installed inside the housing 100, the first gear 320 is provided with an idle portion 321, and the first gear 320 is transmission-connected with the second motor 310; the screening drum 330 is pivotally connected to the housing 100, and is located below the brush member 230, and is against the brush member 230 in the operating state; the first gear 320 is fixedly installed at one end of the screening drum 330, and the first gear 320 is transmission-connected with the first rack 340.

[0029] Specifically, the box body 100 is welded with steel plates, the feed piece 110 is bucket-shaped, and the discharge piece 120 is cylindrical; the brush hole mechanism 200 is used to roll the powder in the box body 100, and at the same time brush the screening holes on the screening drum 330, the first motor 210 drives the rotating rod 220 to rotate, and the rotating rod 220 drives the brush piece 230 to rotate, wherein 5 brush pieces 230 are provided; the screening mechanism 300 is used to screen out powder of appropriate size, the second motor 310 drives the first gear 320 to rotate, the first gear 320 drives the first rack 340 to rotate, the first rack 340 rotates and drives the screening drum 330 to rotate, and the idling part 321 is used to make the screening drum 330 reciprocate. When in use, the powder to be screened is placed in the feed piece 110 of the box 100, and the powder falls onto the brush piece 230 and the screening drum 330. The first motor 210 drives the rotating rod 220 to rotate, and the rotating rod 220 drives the brush piece 230 to rotate. The brush piece 230 makes the powder roll in the box 100. At the same time, the second motor 310 is started, and the second motor 310 drives the first gear 320 to rotate. The rotation of the first gear 320 drives the first rack 340 to rotate. The rotation of the first rack 340 drives the screening drum 330 to rotate. When the idle part 321 meets the rack, the first rack 340 returns to its original position, so that the screening drum 330 can rotate reciprocatingly.

[0030] In this embodiment, the brush member 230 includes a fixed plate 240 and a plurality of brushes 250 . The fixed plate 240 is provided with a plurality of filter holes 241 . One side of the fixed plate 240 is fixedly connected to the rotating rod 220 , and the brush 250 is fixedly connected to the other side of the fixed plate 240 .

[0031] Specifically, the setting of the filter holes 241 can make the powder move in the adjacent fixed plates 240, so that too much powder will not be accumulated between two adjacent fixed plates 240, and the brush 250 is used to brush the retained powder in the screening holes in the screening cylinder 330.

[0032] In this embodiment, the box body 100 is detachably mounted with a filter element 130 , and the filter element 130 is fixedly connected with a handle 131 .

[0033] Specifically, the filter element 130 can screen the powder again, thereby increasing the quality of powder screening. The setting of the handle 131 makes it easy to replace the filter element 130.

[0034] In this embodiment, the screening cylinder 330 is provided with an arc-shaped groove 331 .

[0035] Specifically, the provision of the arc-shaped groove 331 prevents the screening drum 330 from touching the rotating shaft, while also increasing the space inside the screening drum 330 .

[0036] In this embodiment, the bottom of the box body 100 is fixedly connected to the supporting legs 140 .

[0037] Specifically, the supporting legs 140 can support the box 100 at a certain height, so as to facilitate the collection of the screened powder.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A powder screening device for additive manufacturing, characterized in that: It comprises a box body (100), a hole brushing mechanism (200) and a screening mechanism (300); The upper part of the box body (100) is provided with a feeding piece (110), and the lower part thereof is provided with a discharging piece (120); The hole brushing mechanism (200) comprises a first motor (210), a rotating rod (220) and a plurality of brush members (230); The first motor (210) is installed on the box (100), the rotating rod (220) is pivotally connected to the box (100), the rotating rod (220) is transmission-connected to the first motor (210), and the brush member (230) is fixedly connected to the rotating rod (220); The screening mechanism (300) comprises a second motor (310), a first gear (320), a screening cylinder (330) and a first rack (340); The second motor (310) is fixedly installed inside the box (100); the first gear (320) is provided with an idler portion (321); and the first gear (320) is drivingly connected to the second motor (310); The screening cylinder (330) is pivotally connected to the box (100), is located below the brush member (230), and abuts against the brush member (230) in an operating state; The first gear (320) is fixedly mounted on one end of the screening drum (330), and the first gear (320) is transmission-connected to the first rack (340).

2. The powder screening device for additive manufacturing according to claim 1, characterized in that: The brush member (230) comprises a fixed plate (240) and a plurality of brushes (250); the fixed plate (240) is provided with a plurality of filtering holes (241); one side of the fixed plate (240) is fixedly connected to the rotating rod (220); and the brush (250) is fixedly connected to the other side of the fixed plate (240).

3. The powder screening device for additive manufacturing according to claim 2, characterized in that: The box body (100) is detachably mounted with a filter element (130), and the filter element (130) is fixedly connected with a handle (131).

4. The powder screening device for additive manufacturing according to claim 3, characterized in that: The screening cylinder (330) is provided with an arc-shaped groove (331).

5. The powder screening device for additive manufacturing according to claim 4, characterized in that: The bottom of the box body (100) is fixedly connected to the supporting legs (140).

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