阅读说明：本技术 网状壳体及喷砂方法 (Net-shaped shell and sand blasting method ) 是由 陈鼎钧 于 2020-05-22 设计创作，主要内容包括：一种网状壳体及喷砂方法。网状壳体用以容置至少一元件。网状壳体包含第一端部、第二端部、第一环状部、第二环状部、第一网状部及第二网状部。第二端部与第一端部相对设置,且具有与第一端部相等的质量。第二环状部与第一环状部相连接。第一网状部连接于第一端部与第一环状部之间。第二网状部连接于第二端部与第二环状部之间。第一网状部与第二网状部皆由多个网格构成,每一网格的最大内径皆小于至少一元件的一穿透尺寸。第一端部与第二端部的质量总和以及第一环状部与第二环状部的质量总和皆大于第一网状部与第二网状部的质量总和。(A mesh shell and a sand blasting method. The net-shaped shell is used for accommodating at least one element. The reticular shell comprises a first end part, a second end part, a first annular part, a second annular part, a first reticular part and a second reticular part. The second end portion is disposed opposite the first end portion and has a mass equal to that of the first end portion. The second annular portion is connected to the first annular portion. The first net part is connected between the first end part and the first annular part. The second net part is connected between the second end part and the second annular part. The first mesh part and the second mesh part are both composed of a plurality of meshes, and the maximum inner diameter of each mesh is smaller than a penetrating size of at least one element. The sum of the masses of the first end portion and the second end portion and the sum of the masses of the first annular portion and the second annular portion are both larger than the sum of the masses of the first reticular portion and the second reticular portion.)

1. A mesh housing for accommodating at least one component, comprising:

a first end portion;

a second end portion disposed opposite the first end portion and having a mass equal to the first end portion;

a first annular portion;

a second annular part connected with the first annular part;

a first net part connected between the first end part and the first annular part; and

the second reticular part is connected between the second end part and the second annular part;

the first net-shaped part and the second net-shaped part are both composed of a plurality of grids, the maximum inner diameter of each grid is smaller than the penetrating size of the at least one element, and the sum of the masses of the first end part and the second end part and the sum of the masses of the first annular part and the second annular part are both larger than the sum of the masses of the first net-shaped part and the second net-shaped part.

2. The mesh shell of claim 1, wherein the first end portion, the second end portion, the first annular portion, the second annular portion, the first mesh portion and the second mesh portion together form a hollow sphere, an ellipsoid or a cylinder.

3. The mesh enclosure of claim 1 having a density or a hardness, and the density or the hardness is greater than the density or the hardness of the element.

4. The mesh enclosure of claim 1, wherein the element has a length, a width, and a height, the length is greater than the width, the width is greater than the height, and the penetration dimension of the element is equal to the width.

5. The mesh housing of claim 1 having a total mass, wherein a sum of masses of the first end portion and the second end portion is between 14% and 20% of the total mass, a sum of masses of the first annular portion and the second annular portion is between 65% and 85% of the total mass, and a sum of masses of the first mesh portion and the second mesh portion is between 1% and 15% of the total mass.

6. The mesh shell of claim 1, formed of a single material, wherein the first end portion, the first annular portion and the first mesh portion are integrally formed, and the second end portion, the second annular portion and the second mesh portion are integrally formed.

7. The mesh shell of claim 1 having an outer surface area, wherein the sum of the areas of the first mesh portion and the second mesh portion is between 40% and 80% of the outer surface area.

8. The mesh shell according to claim 1, wherein the first annular portion comprises a first connecting portion, the second annular portion comprises a second connecting portion, and the first connecting portion and the second connecting portion have corresponding structures and are connected to each other by screwing or snapping.

9. The mesh enclosure of claim 8, wherein the first connection portion comprises male threads and the second connection portion comprises female threads.

10. A blasting method for surface treating a plurality of components, comprising the steps of:

(a) receiving the plurality of components in a plurality of mesh housings as recited in claim 1;

(b) receiving the plurality of mesh shells in a container of a sand blasting machine;

(c) controlling the sand blasting machine to drive the container to rotate and roll the plurality of reticular shells in the container; and

(d) a nozzle of the blasting machine is controlled to eject sand at a specific angle.

11. The blasting method of claim 10, wherein in step (a), each of the mesh enclosures houses at least one of the components, and the mass of each of the mesh enclosures is greater than the sum of the masses of the at least one of the components housed therein.

12. The blasting method of claim 10, wherein in step (b), the vessel has a vessel diameter and the mesh enclosure has an enclosure diameter, wherein the enclosure diameter is between one sixth and one quarter of the vessel diameter.

13. The blasting method of claim 10, wherein in step (b), the container of the blasting machine has an internal volume, and the sum of the volumes of the plurality of mesh enclosures is between 20% and 40% of the internal volume.

14. The blasting method of claim 10, wherein in step (c), the rotation speed of the vessel is between 4rpm and 10 rpm.

15. The blasting method of claim 10, wherein in step (d), the specific angle of the nozzle is varied between 30 and 60 degrees.

16. The blasting method according to claim 10, wherein in the step (d), the specific angle of the nozzle is a constant value and is between 30 and 60 degrees.

Technical Field

The present disclosure relates to a mesh housing and a sand blasting method, and more particularly, to a mesh housing and a sand blasting method suitable for various shapes, qualities and sizes of elements.

Background

In recent years, the Additive Manufacturing (AM) technology is widely used for Manufacturing various devices because of the advantages of less structural limitations when Manufacturing devices than the conventional Manufacturing method and being beneficial to improving the product performance. With the progress of the lamination manufacturing technology, the printing speed is greatly increased, and the device can be mass-produced.

In the lamination manufacturing technology, Powder Bed (PBF) is one of the fastest manufacturing technologies, but the components produced by this method are often buried in Powder after the manufacturing process is finished, and the surface of the components often has Powder which is difficult to remove. To address this problem, a common treatment method at present is to eject sand grains to the component through a sand ejector, so that the sand grains hit the surface of the component, and the semi-sintered powder on the surface is knocked off to clean the surface of the component. In order to achieve mass production, the blasting process also needs to be automated.

The prior art blasting methods include a rotary basket type and an endless belt type, both of which roll the component in a blasting machine container and then spray high pressure air containing sand particles onto the surface of the component. However, during the rolling of the elements, which are too narrow and long, tend to stick to the surface of the sander container, causing the surface of the element to be unevenly impacted by the grit. Elements that are too light or too small in size tend to scatter during the blasting process, resulting in poor surface treatment.

Therefore, there is a need for a net-shaped housing and a blasting method that can solve the drawbacks of the prior art to ensure the effect of surface treatment of the components in batch by a blasting machine and to reliably clean the surfaces of the components.

Disclosure of Invention

It is a primary objective of the present disclosure to provide a mesh enclosure and a blasting method to solve and improve the problems and disadvantages of the prior art.

Another object of the present disclosure is to provide a mesh shell and a blasting method, which can stably roll the mesh shell and allow sand grains to enter therein by the external shape, the mesh portion and the special mass distribution of the mesh shell. Thus, when the component is accommodated in the net housing and subjected to surface treatment by the sand blasting machine, the component with a long and narrow shape, too light weight or too small size can naturally roll in the net housing, and the surface of the component can be uniformly impacted by sand grains, so that the uniformity of the surface treatment of the component is improved. In addition, the effect of surface treatment on the elements in batches is achieved by accommodating a plurality of elements in a plurality of mesh shells.

To achieve the above objective, the present disclosure provides a mesh housing for accommodating at least one component. The reticular shell comprises a first end part, a second end part, a first annular part, a second annular part, a first reticular part and a second reticular part. The second end portion is disposed opposite the first end portion and has a mass equal to that of the first end portion. The second annular portion is connected to the first annular portion. The first net part is connected between the first end part and the first annular part. The second net part is connected between the second end part and the second annular part. The first net-shaped part and the second net-shaped part are both composed of a plurality of grids, and the maximum inner diameter of each grid is smaller than the penetrating size of at least one element. The sum of the masses of the first end portion and the second end portion and the sum of the masses of the first annular portion and the second annular portion are both larger than the sum of the masses of the first reticular portion and the second reticular portion.

To achieve the aforesaid objective, the present disclosure further provides a blasting method for surface treating a plurality of components, comprising: (a) receiving the plurality of components in a plurality of mesh housings as recited in claim 1; (b) receiving the plurality of mesh shells in a container of a sand blasting machine; (c) controlling the sand blasting machine to drive the container to rotate and roll the plurality of reticular shells in the container; and (d) controlling a nozzle of the sand blasting machine to spray sand at a specific angle.

Drawings

Fig. 1 shows a schematic structural diagram of a mesh-shaped housing according to an embodiment of the present disclosure.

Fig. 2 shows an exploded view of the structure of the mesh enclosure shown in fig. 1.

FIG. 3 is a cross-sectional view of the mesh shell shown in FIG. 2 taken along line A-A'.

Fig. 4 shows a flow chart of a blasting method according to an embodiment of the disclosure.

Fig. 5 is a schematic structural view showing the blasting machine and the mesh enclosure in the blasting method shown in fig. 4.

Wherein the reference numerals are as follows:

1: net-shaped shell

2: first end part

3: second end portion

4: a first annular part

41: first connecting part

5: second annular part

51: second connecting part

6: a first net part

7: the second net part

8: sand blasting machine

81: container with a lid

82: nozzle with a nozzle body

A-A': tangent line

D: diameter of the vessel

d: diameter of the shell

H: horizontal line

L: axial line

M: grid mesh

S01-S04: step (ii) of

θ: specific angle

Detailed Description

Some exemplary embodiments that incorporate the features and advantages of the present disclosure will be described in detail in the specification which follows. It is to be understood that the disclosure is capable of various modifications without departing from the scope of the disclosure, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

Please refer to fig. 1, fig. 2 and fig. 3. Fig. 1 shows a schematic structural diagram of a mesh-shaped housing according to an embodiment of the present disclosure. Fig. 2 shows an exploded view of the structure of the mesh enclosure shown in fig. 1. FIG. 3 is a cross-sectional view of the mesh shell shown in FIG. 2 taken along line A-A'. As shown in the drawings, the mesh-shaped housing 1 is used for accommodating at least one component (not shown), and includes a first end portion 2, a second end portion 3, a first annular portion 4, a second annular portion 5, a first mesh portion 6, and a second mesh portion 7. The second end 3 is arranged opposite the first end 2 and has the same mass as the first end 2. The second annular portion 5 is connected to the first annular portion 4. The first net portion 6 is connected between the first end portion 2 and the first annular portion 4. The second net portion 7 is connected between the second end portion 3 and the second annular portion 5. The first mesh portion 6 and the second mesh portion 7 are formed by a plurality of meshes M, and the maximum inner diameter of each mesh M is smaller than a penetrating size of at least one device. The sum of the masses of the first end portion 2 and the second end portion 3 and the sum of the masses of the first annular portion 4 and the second annular portion 5 are both greater than the sum of the masses of the first mesh portion 6 and the second mesh portion 7.

Please refer to fig. 1. In the present embodiment, the mesh-shaped housing 1 has a rollable shape. In other words, the first end portion 2, the second end portion 3, the first annular portion 4, the second annular portion 5, the first mesh portion 6 and the second mesh portion 7 may form a hollow sphere, ellipsoid or cylinder, but not limited thereto. In the present embodiment, the density or hardness of the mesh-like casing 1 is greater than that of the components to be accommodated, so as to prevent the mesh-like casing 1 from being damaged due to collision with the components during rolling or due to sand impact during the sand blasting process.

In the present embodiment, the meshes M of the first mesh portion 6 and the second mesh portion 7 may have any shape, such as a polygon, an ellipse, or a circle, and the sizes and shapes of the meshes M may be different from each other. Wherein, the maximum inner diameter of the grid M is the maximum distance in the single grid M. For example, when the grid M is substantially square, the maximum inner diameter is the distance between two opposite corners. In addition, in the present embodiment, the components accommodated in the mesh-shaped housing 1 have a length, a width and a height, and the penetrating dimension thereof is defined by the central dimension among the length, the width and the height. For ease of description, the relationship of the three-dimensional dimensions of the elements is defined as length being greater than width and width being greater than height. In this case, the penetration dimension is equal to the width. The maximum inner diameter of each mesh M of the first mesh part 6 and the second mesh part 7 is smaller than the width of the device, so as to prevent the device from passing through the mesh M and leaving the inside of the mesh housing 1.

Please refer to fig. 1 and fig. 2. In the present embodiment, the mesh-shaped housing 1 has a total mass. The sum of the masses of the first end portion 2 and the second end portion 3 is between 14% and 20% of the total mass. The sum of the masses of the first annular portion 4 and the second annular portion 5 is between 65% and 85% of the total mass, and the sum of the masses of the first mesh portion 6 and the second mesh portion 7 is between 1% and 15% of the total mass. In the present embodiment, the net-like casing 1 has a total mass of 24 g. The sum of the masses of the first end portion 2 and the second end portion 3 is 16.7% of the total mass, and is about 4g, but not limited thereto. The sum of the masses of the first annular portion 4 and the second annular portion 5 is 70% of the total mass, which is about 17 g. The sum of the masses of the first mesh portion 6 and the second mesh portion 7 was 12.5% of the total mass, which was about 3 g. By this design of mass distribution, the net-shaped housing 1 can stably roll around the axis L connecting the first end 2 and the second end 3 by the gyroscopic moment generated by the first end 2 and the second end 3 and the centripetal force generated by the first annular portion 4 and the second annular portion 5 during rolling.

Please refer to fig. 3. In the present embodiment, the mesh-shaped housing 1 is made of a single material, and the first end portion 2, the first annular portion 4 and the first mesh-shaped portion 6 are integrally formed, and the second end portion 3, the second annular portion 5 and the second mesh-shaped portion 7 are integrally formed, but not limited thereto. In some embodiments, the first end portion 2, the second end portion 3, the first annular portion 4, the second annular portion 5, the first web portion 6, and the second web portion 7 are formed of different materials. In the present embodiment, the first end portion 2, the second end portion 3, the first annular portion 4 and the second annular portion 5 all extend toward the inside of the mesh-shaped housing 1 to have a larger mass, but not limited thereto. In other embodiments, the first end portion 2, the second end portion 3, the first annular portion 4 and the second annular portion 5 have a higher material density, and the first mesh portion 6 and the second mesh portion 7 have a lower material density, so as to achieve the above-mentioned mass distribution.

Please refer to fig. 1. In the present embodiment, the mesh-shaped shell 1 is substantially spherical and has an outer surface area, and the outer surface area is a spherical area. In appearance, the mesh-like shell 1 is mostly formed by the first mesh portion 6 and the second mesh portion 7, so as to allow sand grains to enter the inside of the mesh-like shell 1 through the mesh M as much as possible during the subsequent blasting process. In the present embodiment, the sum of the areas of the first mesh portion 6 and the second mesh portion 7 in the spherical appearance is between 40% and 80% of the appearance area of the mesh-shaped housing 1, but not limited thereto.

Please refer to fig. 3. In the present embodiment, the first annular portion 4 includes a first connecting portion 41, and the second annular portion 5 includes a second connecting portion 51. The first connection portion 41 and the second connection portion 51 have corresponding structures, and are connected to each other by screwing or snapping, and are easy to be detached from each other. In the present embodiment, the first connection portion 41 includes an external thread, and the second connection portion 51 includes an internal thread, but not limited thereto.

Please refer to fig. 4 and 5. Fig. 4 shows a flow chart of a blasting method according to an embodiment of the disclosure. Fig. 5 is a schematic structural view showing the blasting machine and the mesh enclosure in the blasting method shown in fig. 4. As shown in the figure, firstly, in step S01, a plurality of elements are accommodated in the mesh-shaped shells 1 as described above. Further, in step S02, the plurality of mesh cases 1 are accommodated in the container 81 of the blasting machine 8. Next, in step S03, the sandblasting machine 8 is controlled to rotate the container 81 by driving, and roll the plurality of mesh-like housings 1 in the container 81. Finally, in step S04, the nozzle 82 of the blasting machine 8 is controlled to eject sand at a specific angle θ. By accommodating the components in the mesh-like housing 1 and driving the mesh-like housing 1 to roll by the rotation of the container 81, the components with a relatively long and narrow shape can be prevented from being attached to the surface of the container 81, and the problem that the components with a relatively small size are scattered due to the high-speed sand injection of the nozzle 82 can be solved, so that the components can naturally roll in the mesh-like housing 1, and the uniformity of the surface treatment of the components is improved.

In the present embodiment, step S01 is to accommodate at least one component in each mesh-shaped housing 1. In other words, a single mesh housing 1 can also accommodate multiple components. It should be emphasized that the mass of each mesh-like housing 1 is greater than the sum of the masses of the accommodated components, so that the mesh-like housing 1 can stably roll around the axis L by the mass distribution of the first end portion 2, the second end portion 3, the first annular portion 4 and the second annular portion 5.

In this embodiment, the container 81 of the sander 8 has a container diameter D and an internal volume, and the mesh housing 1 has a housing diameter D. Wherein, the diameter D of the net-shaped shell 1 is between one sixth and one fourth of the diameter D of the container. In the present embodiment, the diameter D of the container is 400mm, and the diameter D of the shell is 72mm, but not limited thereto. In step S02, the total volume of the accommodated mesh-shaped shell 1 is 20% to 40% of the internal volume of the container 81. In step S03, the rotation speed of the container 81 is between 4rpm and 10rpm, preferably but not limited to 6 rpm. Thus, a plurality of mesh-shaped housings 1 can be stacked and turned over each other during rolling. For example, as shown in fig. 5, when the container 81 is rotated in a clockwise direction, the mesh housing 1 accommodated therein will roll in a counterclockwise direction. The mesh-shaped housing 1 located at the lower layer and directly contacting the container 81 is turned from the left side of the container 81 to the upper layer as the container 81 rotates, and the mesh-shaped housing 1 originally located at the upper layer falls from the right side to the lower layer. Thus, by controlling the number of mesh enclosures 1 and the rotational speed of the vessel 81, flipping of the mesh enclosures 1 is achieved, ensuring that each mesh enclosure 1 can enter the blasting zone of the nozzle 82 during the blasting process, causing the elements therein to be impacted by the grit. In the present embodiment, the number of stacked mesh-shaped housings 1 is between one and three, preferably two, but not limited thereto.

In step S04, the sand ejected from the nozzle 82 may be the same as the material of the component, and the air pressure of the ejected sand is approximately 2kg/cm²However, the present invention is not limited thereto. The nozzle 82 of the sander 8 has a specific angle θ with a horizontal line H. In the present embodiment, the specific angle θ can be varied between 30 degrees and 60 degrees during the blasting process to expand the blasting range of the nozzle 82 and improve the surface treatment effect on the plurality of components, but not limited thereto. In some embodiments, the specific angle θ may be a constant value between 30 degrees and 60 degrees, preferably 45 degrees. By the specific angle θ of the nozzle 82, the first and second mesh parts 6 and 7 of the mesh enclosure 1 having a large area, and the stable rolling of the mesh enclosure 1, the sand particles sprayed from the nozzle 82 can enter the inside of the mesh enclosure 1 through the mesh M, sufficiently performing the surface treatment of the elements naturally rolling therein.

It should be added that, in the present embodiment, since all the mesh-shaped housings 1 are spherical, gaps must exist between the plurality of mesh-shaped housings 1 and between the mesh-shaped housings 1 and the container 81. Therefore, after being sprayed to the surface of the component, the sand particles will fall into the gaps between the plurality of mesh-shaped housings 1 and between the mesh-shaped housings 1 and the container 81, and will not stay in the mesh-shaped housings 1, thereby avoiding affecting the effect of the subsequent surface treatment.

In summary, the present disclosure provides a mesh shell and a blasting method. The net-shaped shell can stably roll in the sand blasting machine container through the appearance shape, the net-shaped part and the special mass distribution of the net-shaped shell, elements with various shapes, masses and sizes can naturally roll in the net-shaped shell, the problems that the elements with long and narrow shapes are easily attached to the surface of the sand blasting machine container and the elements with small masses or sizes are easily scattered in the prior art are solved, the uniformity of surface treatment of the elements is improved, and the excellent surface cleaning effect is achieved. In addition, by accommodating a plurality of elements in the plurality of mesh-shaped shells and controlling the specific angle of the nozzle, the effect of surface treatment on the elements in batch is achieved.

The disclosure can be modified in various ways by those skilled in the art without departing from the scope of the appended claims.