Precise screening tool for screening based on 3D printing materials

Abstract

The utility model discloses a precision screening tool for screening based on 3D printing material, including outer cylinder, screen drum and collection box, outer cylinder shell is equipped with the knocking hammer that is used for knocking the screen drum through the telescopic piece, the screen drum is provided with a plurality of, the aperture of adjacent screen drum gradually decreases, each screen drum is supported by the support ring, and the support ring is equipped with the collecting box. The multiple supporting rings are connected with the same rotary table through arm rods, the rotary table is used for switching screen drums with different hole diameters to be placed into the outer drum, a supporting table is rotationally connected to the lower portion of the rotary table, and a second telescopic part is installed below the supporting table. A plurality of screen drums with different hole diameters are preset around the outer drum, and the screen drums with different hole diameters are quickly switched into the outer drum for screening operation by utilizing the matching of the rotation of the rotary table and the lifting action of the telescopic part II, so that the time required for replacing the screen drums is effectively shortened, and the screening efficiency is improved. And the requirement that 3D printing material powder needs to be screened with various different particle sizes is met, and the material screening and processing efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of additive manufacturing pretreatment equipment technology, and in particular to a precision screening tool for screening 3D printing materials. Background Technology

[0002] 3D printing, also known as additive manufacturing or rapid prototyping, is a technology that uses digital model files as a basis and employs powdered metals or plastics and other bondable materials to construct objects layer by layer. During 3D printing, different material melting technologies have different requirements for the particle size of the raw material powder. For example, SLM (Selective Laser Melting) technology commonly uses a particle size range of 15-53 μm; EBM (Electron Beam Melting) technology commonly uses a particle size range of 53-105 μm; and thermal spraying technology commonly uses a particle size range of 45-80 μm. Therefore, different particle size sieving is required for different technologies.

[0003] However, the screens of existing screening devices are difficult to disassemble after installation, making it inconvenient to quickly replace screens with different aperture sizes, which makes it difficult to meet the needs of 3D printing material powders that require screening multiple different particle sizes.

[0004] To address this issue, we propose a precision screening tool for 3D printing materials. Utility Model Content

[0005] The purpose of this invention is to provide a precision screening tool for screening 3D printing materials, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A precision screening tool for screening 3D printed materials includes an outer cylinder, a sieve cylinder, and a collection box. A striking hammer for striking the sieve cylinder is installed on the outer cylinder shell via a telescopic component. Multiple sieve cylinders are distributed in a distributed manner, with the aperture of adjacent sieve cylinders decreasing progressively. Each sieve cylinder is supported by a support ring. Multiple support rings are connected to the same turntable via an arm. The turntable is used to switch between sieve cylinders with different apertures being placed into the outer cylinder. A support platform is rotatably connected under the turntable, and a telescopic component is installed under the support platform.

[0008] In a further embodiment, the outer edge of the support ring is symmetrically provided with lugs, and a positioning rod is installed on the lug.

[0009] In a further embodiment, the outer edge of the screen cylinder is symmetrically equipped with hanging ears, which are used to fit over the positioning rod.

[0010] In a further embodiment, the inside of the lug is provided with a sliding groove, and a slider is slidably connected in the sliding groove. The positioning rod is fixed on the upper surface of the slider, and a spring is connected between the slider and the support ring.

[0011] In a further embodiment, the sliding direction of the slider coincides with the radial direction of both the support ring and the sieve cylinder, and when the sieve cylinder is placed in the outer cylinder, the extension and retraction direction of the hammer is consistent with the sliding direction of the slider.

[0012] In a further embodiment, a motor for driving the turntable to rotate is also installed on the lower surface of the support platform.

[0013] In a further embodiment, a telescopic sleeve is connected to the lower discharge port of the outer cylinder, and a dust cover is installed under the telescopic sleeve, which is used to cover the collection box.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention uses multiple screens with different apertures pre-set around the outer cylinder. By utilizing the rotation of the turntable and the lifting action of the telescopic component, screens with different apertures can be quickly switched to enter the outer cylinder for screening operations. This effectively shortens the time required for screen replacement, meets the need for 3D printing material powder to be screened into multiple different particle sizes, and makes the material screening and processing more efficient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the telescopic component 2, the turntable, and the four screen cylinders of this utility model;

[0018] Figure 3 This is a schematic diagram of the installation structure of a single sieve cylinder and a support ring of this utility model;

[0019] Figure 4 This is a schematic diagram of a partial structure of the ear support of this utility model.

[0020] In the diagram: 1. Outer cylinder; 2. Screen cylinder; 21. Hanging lug; 3. Collection box; 4. Telescopic component one; 5. Striking hammer; 6. Support ring; 61. Support lug; 611. Slide groove; 62. Positioning rod; 63. Sliding block; 64. Spring; 7. Arm; 8. Turntable; 9. Support platform; 10. Telescopic component two; 11. Motor; 12. Telescopic sleeve; 13. Dust cover. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-2A precision screening tool for 3D printed materials includes an outer cylinder 1, a sieve cylinder 2, and a collection box 3. A striking hammer 5 for striking the sieve cylinder 2 is mounted on the outer shell of the outer cylinder 1 via a telescopic component 4. When the sieve cylinder 2 is inside the outer cylinder 1, the material inside is vibrated by the striking hammer 5, causing the material to be screened and fall into the collection box 3. Multiple sieve cylinders 2 are distributed around the outer cylinder 1, with the aperture of adjacent sieve cylinders decreasing progressively, allowing multiple sieve cylinders 2 with different apertures to be arranged around the outer cylinder 1. Each sieve cylinder 2 is supported by a support ring 6. Multiple support rings 6 are connected to the same turntable 8 via an arm 7. The turntable 8 rotates to switch between sieve cylinders 2 with different apertures being placed into the outer cylinder 1. A support platform 9 is rotatably connected below the turntable 8. Specifically, for easy switching, the support platform... The lower surface of the platform 9 is also equipped with a motor 11 that drives the turntable 8 to rotate, realizing electric position switching. The platform 9 is equipped with a telescopic component 2 10. Both the telescopic component 1 4 and the telescopic component 2 10 can be one of the electric push rod, cylinder, or hydraulic cylinder. The telescopic component 1 4 is used to drive the hammer 5 to reciprocate and extend to strike the screen cylinder 2, while the telescopic component 2 10 is used to drive multiple screen cylinders 2 to rise and fall synchronously, so that when switching screen cylinders 2, the screen cylinder 2 is first driven to rise. When the screen cylinder 2 is detached from the inner wall of the outer wall 1 and is directly above it, the turntable 8 is rotated to switch another screen cylinder 2 to be above the outer wall 1. At this time, the telescopic component 2 10 drives the screen cylinder 2 to fall, so that the screen cylinder 2 is placed into the outer wall 1. Specifically, the outer wall of the outer wall 1 is provided with a notch to facilitate the insertion of the arm 7.

[0025] Please see Figure 2-3 The outer edge of the support ring 6 is symmetrically provided with support ears 61, and a vertical positioning rod 62 is installed on the support ears 61. The outer edge of the screen cylinder 2 is symmetrically provided with hanging ears 21, and the hanging ears 21 are provided with hanging holes. The hanging ears 21 are used to fit over the positioning rod 62, so that the screen cylinder 2 is hung inside the support ring 6. This makes it convenient to quickly disassemble, clean or replace the screen cylinder 2 that has been switched out of the outer cylinder 1, without affecting the use of the screen cylinder 2 inside the outer cylinder 1.

[0026] Please see Figure 4 To improve the vibration effect during screening, a groove 611 is provided inside the lug 61, and a slider 63 is slidably connected in the groove 611. The slider 63 adopts an I-shaped structure. Specifically, the sliding direction of the slider 63 coincides with the radial direction of the support ring 6 and the screen cylinder 2. The positioning rod 62 is fixed on the upper surface of the slider 63, and a spring 64 is connected between the slider 63 and the support ring 6. When the screen cylinder 2 is placed in the outer cylinder 1, the extension and retraction direction of the hammer 5 is consistent with the sliding direction of the slider 63. The screen cylinder 2 can enhance the shaking effect under the action of the slider 63 and the spring 64.

[0027] Please see Figure 1To reduce dust generation during collection of the sieved powder, a telescopic sleeve 12 is connected to the discharge port of the outer cylinder 1. The telescopic sleeve 12 consists of two sleeves that slide together, with the lower sleeve covering the upper sleeve. A dust cover 13 is installed under the telescopic sleeve 12 to cover the collection box 3 to prevent dust generation.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A precision screening tool for screening 3D printed materials, comprising an outer cylinder (1), a sieve cylinder (2), and a collection box (3), characterized in that: The outer cylinder (1) is equipped with a hammer (5) for striking the screen cylinder (2) via a telescopic component (4). Multiple screen cylinders (2) are distributed in a dispersed manner, and the aperture of adjacent screen cylinders (2) decreases step by step. Each screen cylinder (2) is supported by a support ring (6). Multiple support rings (6) are connected to the same turntable (8) via an arm (7). The turntable (8) is used to switch screen cylinders (2) with different apertures to be placed into the outer cylinder (1). A support platform (9) is rotatably connected under the turntable (8), and a telescopic component (10) is installed under the support platform (9).

2. The precision screening tool for screening 3D printing materials according to claim 1, characterized in that: The outer edge of the ring (6) is symmetrically provided with lugs (61), and a positioning rod (62) is installed on the lugs (61).

3. The precision screening tool for screening 3D printing materials according to claim 2, characterized in that: The outer edge of the screen cylinder (2) is symmetrically equipped with hanging ears (21), and the hanging ears (21) are used to fit around the positioning rod (62).

4. The precision screening tool for screening 3D printing materials according to claim 2, characterized in that: The inside of the lug (61) is provided with a groove (611), and a slider (63) is slidably connected in the groove (611). The positioning rod (62) is fixed on the upper surface of the slider (63), and a spring (64) is connected between the slider (63) and the ring (6).

5. A precision screening tool for screening 3D printing materials according to claim 4, characterized in that: The sliding direction of the slider (63) coincides with the radial direction of the support ring (6) and the sieve cylinder (2), and when the sieve cylinder (2) is placed in the outer cylinder (1), the extension and retraction direction of the hammer (5) is consistent with the sliding direction of the slider (63).

6. The precision screening tool for screening 3D printing materials according to claim 1, characterized in that: The lower surface of the support platform (9) is also equipped with a motor (11) that drives the turntable (8) to rotate.

7. A precision screening tool for screening 3D printing materials according to claim 1, characterized in that: A telescopic sleeve (12) is connected to the lower outlet of the outer cylinder (1), and a dust cover (13) is installed under the telescopic sleeve (12). The dust cover (13) is used to cover the collection box (3).

Images