Powder cleaning gun suitable for large metal 3D printing equipment

Abstract

The utility model relates to a powder cleaning gun suitable for metal 3D printing large equipment, which comprises a powder cleaning filter head, a powder cleaning combined pipe, a powder cleaning connecting pipe and an adjusting ring, the powder cleaning combined pipe is composed of one or more powder cleaning segmented pipes which are sequentially connected in series, the powder cleaning filter head is connected to the head end of the powder cleaning combined pipe, and the adjusting ring is connected with the powder cleaning combined pipe. The powder cleaning filter head is provided with a plurality of powder cleaning holes communicated with an inner cavity of the powder cleaning combined pipe, the powder cleaning connecting pipe is connected to the tail end of the powder cleaning combined pipe, the powder cleaning connecting pipe is provided with a balance air hole communicated with an inner cavity of the powder cleaning connecting pipe, and the adjusting ring is installed on the powder cleaning connecting pipe and can cover the balance air hole. The adjusting ring can move on the powder cleaning connecting pipe and adjust the opening degree of the balance air hole. The length can be flexibly adjusted according to needs, the powder cleaning requirement of large metal printing equipment is met, and the pressure in the gun is adjustable during powder cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing equipment, and in particular to a powder cleaning gun suitable for large metal 3D printing equipment. Background Art

[0002] Metal 3D printing has broad application prospects in manufacturing, aerospace, medical, automotive and other fields, and can realize the manufacturing and personalized production of complex structures. With the continuous development of metal 3D printing, its demand in the aerospace and military fields has increased, which means that the size of metal 3D printing equipment has also increased. In large metal 3D printing equipment, the powder cleaning work after printing is relatively cumbersome. The powder cleaning cabin of large equipment is large in size. When the operator cleans the powder from the window, due to the limitation of the length of the arm and the powder cleaning gun, only part of the metal powder can be cleaned, and the remaining metal powder is difficult to clean. If the length of the powder cleaning gun is too long, the weight is also relatively heavy. The operator will be tired if the operation time is too long, which affects the powder cleaning efficiency. At the same time, some powders that are closer to the operator are also difficult to clean. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a powder cleaning gun suitable for large metal 3D printing equipment, which can flexibly adjust its length and effectively clean up the residual powder.

[0004] To achieve the above-mentioned purpose, the utility model provides a powder cleaning gun suitable for large metal 3D printing equipment, including a powder cleaning filter head, a powder cleaning combination tube, a powder cleaning pipe and an adjustment ring, the powder cleaning combination tube is composed of one or more powder cleaning segmented tubes connected in series in sequence, the powder cleaning filter head is connected to the head end of the powder cleaning combination tube, the powder cleaning filter head is provided with a plurality of powder cleaning holes connected to the inner cavity of the powder cleaning combination tube, the powder cleaning pipe is connected to the tail end of the powder cleaning combination tube, the powder cleaning pipe is provided with a balancing air hole connected to its inner cavity, the adjusting ring is installed on the powder cleaning pipe and can cover the balancing air hole, the adjusting ring can move on the powder cleaning pipe and adjust the opening degree of the balancing air hole.

[0005] Furthermore, the powder cleaning pipe includes a connecting main pipe and a connecting outer sleeve mounted on the outside of the head end of the connecting main pipe, the connecting outer sleeve is fixedly connected to the connecting main pipe, a ventilation gap is provided between the outer sleeve and the connecting main pipe, the ventilation gap is open on the head end side of the powder cleaning pipe, the inner cavity of the connecting main pipe and the ventilation gap are both connected to the inner cavity of the powder cleaning combination pipe; the balancing air hole is arranged on the connecting outer sleeve and is connected to the ventilation gap.

[0006] Furthermore, the adjusting ring is screwed onto the powder cleaning pipe.

[0007] Furthermore, there are multiple balancing air holes on the powder cleaning pipe, and the balancing air holes are evenly distributed along the circumference of the powder cleaning pipe.

[0008] Furthermore, a hose connector is provided at the tail end of the powder cleaning pipe.

[0009] Furthermore, the powder cleaning segmented pipe has a first connection structure at one end and a second connection structure matching the first connection structure at the other end, and the two powder cleaning segmented pipes can be connected via the first connection structure and the second connection structure.

[0010] Furthermore, the first connection structure and the second connection structure on the powder cleaning segmented pipe are respectively an external thread segment and an internal thread segment.

[0011] Furthermore, the head end of the powder cleaning filter is hemispherical.

[0012] Furthermore, it also includes a handle fixedly connected to the powder cleaning pipe.

[0013] As described above, the powder cleaning gun of the utility model has the following beneficial effects:

[0014] 1. The length can be flexibly adjusted according to needs to meet the powder cleaning needs of large metal printing equipment. The pressure inside the gun can be adjusted during powder cleaning, with good powder cleaning effect and convenient and flexible use.

[0015] 2. The powder cleaning pipe is provided with a connecting main pipe and a connecting outer sleeve, so that powder can be prevented from escaping from the powder cleaning hole 11 during powder cleaning, thereby ensuring the efficiency of powder cleaning work.

[0016] 3. The powder cleaning segmented pipes of the powder cleaning combination pipe are connected by threads. Standard parts can be made in advance and can be flexibly assembled according to needs, which is conducive to the modular design of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the powder cleaning gun of the utility model.

[0018] Figure 2 It is a side view of the powder cleaning gun of the utility model.

[0019] Figure 3 It is a schematic diagram of the structure of the powder cleaning filter head in the utility model.

[0020] Figure 4 It is a structural schematic diagram of the powder cleaning segmented pipe in the utility model.

[0021] Figure 5 It is a structural schematic diagram of the powder cleaning pipe and the adjustment ring in the utility model.

[0022] Figure 6 for Figure 5 Side view of.

[0023] Figure 7 for Figure 6 AA section view in.

[0024] Description of Figure Numbers

[0025] 1 Powder cleaning filter

[0026] 11 Powder cleaning hole

[0027] 2 Powder cleaning combination tube

[0028] 21 Powder cleaning segmented pipe

[0029] 211 Internal thread segment

[0030] 212 External thread segment

[0031] 3. Clean powder and take over

[0032] 301 Balanced air hole

[0033] 302 Hose Connector

[0034] 31 Connection Supervisor

[0035] 32 Connect outer sleeve

[0036] 33 Ventilation gap

[0037] 4 Adjustment ring

[0038] 5 Handles DETAILED DESCRIPTION

[0039] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0040] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0041] See also Figures 1 to 7The utility model provides a powder cleaning gun suitable for large metal 3D printing equipment, comprising a powder cleaning filter head 1, a powder cleaning combination tube 2, a powder cleaning pipe 3 and an adjusting ring 4, the powder cleaning combination tube 2 is composed of one or more powder cleaning segmented tubes 21 connected in series in sequence, the powder cleaning filter head 1 is connected to the head end of the powder cleaning combination tube 2, the powder cleaning filter head 1 is provided with a plurality of powder cleaning holes 11 connected to the inner cavity of the powder cleaning combination tube 2, the powder cleaning pipe 3 is connected to the tail end of the powder cleaning combination tube 2, the powder cleaning pipe 3 is provided with a balancing air hole 301 connected to the inner cavity thereof, the adjusting ring 4 is installed on the powder cleaning pipe 3 and can cover the balancing air hole 301, the adjusting ring 4 can move on the powder cleaning pipe 3 and adjust the opening degree of the balancing air hole 301.

[0042] The main working principle of the powder cleaning gun of the utility model is as follows: after the printing work is completed, most of the metal powder is first cleaned with a brush. Then the powder cleaning gun is used to clean the powder. The tail end of the powder cleaning pipe 3 is connected to the powder suction hose for sucking powder. The required length of the powder cleaning gun is determined according to the demand (mainly considering the area of ​​the powder cleaning bin), and then the length of the powder cleaning combination pipe 2 and the number of the required powder cleaning segmented pipes 21 are determined to ensure that the length of the powder cleaning gun can remove the metal powder at the farthest end. After cleaning the far-end powder, the number of powder cleaning segmented pipes 21 can be reduced to prevent the powder cleaning gun from being too long and inconvenient to operate. This is analogous to the above until all the metal powder is cleaned. When cleaning the powder, the inner cavity of the powder cleaning gun is negatively pressured by the hose, and the powder cleaning gun sucks the powder through the powder cleaning hole 11 of the powder cleaning filter 1, and then enters the powder suction hose through the powder cleaning combination pipe 2 and the powder cleaning pipe 3. The diameter of the powder cleaning hole 11 is determined according to the powder and cannot be too large, so as to prevent other debris except powder from entering. The balance air hole 301 on the powder cleaning pipe 3 is used to balance the internal and external pressures of the powder cleaning gun. The opening degree of the balance air hole 301 is adjusted by the adjusting ring 4 to avoid excessive negative pressure in the pipe. The powder cleaning gun of the utility model can flexibly adjust the length according to the needs, meet the powder cleaning needs of large metal printing equipment, have good powder cleaning effect, and are convenient and flexible to use.

[0043] In this embodiment, see Figure 1As a preferred design, the powder cleaning pipe 3 includes a connecting pipe 31 and a connecting outer sleeve 32 which is sleeved on the outside of the connecting pipe 31. The tail end of the powder cleaning pipe 3 (the end away from the powder cleaning combination pipe 2) is provided with a hose connector 302, which is convenient for connecting with the powder suction hose. As the main circulation channel of the powder, the connecting outer sleeve 32 is fixedly connected to the connecting pipe 31. There is a ventilation gap 33 between the connecting outer sleeve 32 and the connecting pipe 31. The width of the ventilation gap 33 can be set as required. The ventilation gap 33 is open at the head end of the powder cleaning pipe 3. The powder cleaning pipe 3 is connected to the head end of the powder cleaning combination pipe 2 through the connecting outer sleeve 32, so that the inner cavity of the connecting pipe 31 and the ventilation gap 33 are both connected to the inner cavity of the powder cleaning combination pipe 2; the balancing air hole 301 is set on the connecting outer sleeve 32 and communicated with the ventilation gap 33. In this embodiment, one side of the tail end of the connecting outer sleeve 32 is fixedly connected to the connecting pipe 31, and the connection is sealed, so that the ventilation gap 33 is sealed except for the opening and the balancing air hole 301. With the above design, the powder cleaning combination pipe 2 and the connecting main pipe 31 constitute the main channel for the powder. During powder cleaning, the powder mainly enters the connecting main pipe 31 from the powder cleaning combination pipe 2, and rarely enters the ventilation gap 33. Since the balancing air hole 301 is not directly connected to the main channel for the powder, the balancing air hole 301 can effectively reduce the powder escaping from the balancing air hole 301 when it is opened.

[0044] In this embodiment, see Figure 1 As a preferred design, the adjusting ring 4 is screwed on the upper connecting outer sleeve 32 of the powder cleaning pipe 3. The adjusting ring 4 can be axially moved on the powder cleaning pipe 3 by rotating it. The installation is stable and it is convenient to open or close the balancing air holes 301. Preferably, there are multiple balancing air holes 301 on the connecting outer sleeve 32, and they are evenly distributed along the circumference of the powder cleaning pipe 3.

[0045] In this embodiment, see Figure 4 As a preferred design, a first connection structure is provided at one end of the powder cleaning segmented pipe 21, and a second connection structure matching the first connection structure is provided at the other end. The two powder cleaning segmented pipes 21 can be connected through the first connection structure and the second connection structure, wherein the first connection structure and the second connection structure are respectively an external thread section 212 and an internal thread section 211, and the two powder cleaning segmented pipes 21 can be screwed together, which is convenient for assembling the powder cleaning segmented pipes 21. At the same time, in this embodiment, the powder cleaning filter head 1 is also screwed on the external thread section 212 at the head end of the powder cleaning combination pipe 2 through the internal thread, and the head end of the connecting outer sleeve 32 of the powder cleaning pipe 3 is also screwed in the internal thread section 211 at the tail end of the powder cleaning combination pipe 2 through the external thread section 212, which is convenient for assembly. In other embodiments, the first connection structure and the second connection structure can also adopt other existing suitable structures, as long as a fast and stable connection effect can be achieved.

[0046] In this embodiment, see Figure 1As a preferred design, the powder cleaning filter head 1 has a cavity inside, which is connected to the cavity of the powder cleaning combination tube 2. The head end of the powder cleaning filter head 1 is hemispherical and has a large number of powder cleaning holes 11 to improve the powder cleaning effect. The spherical head can also reduce the damage between the powder cleaning filter head 1 and the surrounding equipment.

[0047] In this embodiment, see Figure 1 As a preferred design, it also includes a handle 5 fixedly connected to the powder cleaning pipe 3, and the handle 5 is used for the staff to hold to operate the powder cleaning gun.

[0048] As can be seen from the above, the powder cleaning gun of the utility model has the following beneficial effects:

[0049] 1. The length can be flexibly adjusted according to needs to meet the powder cleaning needs of large metal printing equipment. The pressure inside the gun can be adjusted during powder cleaning, with good powder cleaning effect and convenient and flexible use.

[0050] 2. The powder cleaning pipe 3 is provided with a connecting main pipe 31 and a connecting outer sleeve 32, so as to prevent powder from escaping from the powder cleaning hole 11 during powder cleaning, thereby ensuring the efficiency of powder cleaning.

[0051] 3. The powder cleaning segmented pipes 21 of the powder cleaning combined pipe 2 are connected by threads, and standard parts can be made in advance and can be flexibly assembled according to needs, which is conducive to the modular design of the product.

[0052] In summary, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0053] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A powder cleaning gun suitable for large metal 3D printing equipment, characterized by: The invention comprises a powder cleaning filter head (1), a powder cleaning combination pipe (2), a powder cleaning pipe (3) and an adjusting ring (4); the powder cleaning combination pipe (2) is composed of one or more powder cleaning segmented pipes (21) connected in series in sequence; the powder cleaning filter head (1) is connected to the head end of the powder cleaning combination pipe (2); the powder cleaning filter head (1) is provided with a plurality of powder cleaning holes (11) connected to the inner cavity of the powder cleaning combination pipe (2); the powder cleaning pipe (3) is connected to the tail end of the powder cleaning combination pipe (2); the powder cleaning pipe (3) is provided with a balancing air hole (301) connected to the inner cavity thereof; the adjusting ring (4) is installed on the powder cleaning pipe (3) and can cover the balancing air hole (301); the adjusting ring (4) can move on the powder cleaning pipe (3) and adjust the opening degree of the balancing air hole (301).

2. The powder cleaning gun suitable for large metal 3D printing equipment according to claim 1 is characterized in that: The powder cleaning pipe (3) comprises a connecting main pipe (31) and a connecting outer sleeve (32) sleeved on the outside of the head end of the connecting main pipe (31); the connecting outer sleeve (32) is fixedly connected to the connecting main pipe (31); a ventilation gap (33) is provided between the outer sleeve and the connecting main pipe (31); the ventilation gap (33) is open at the head end of the powder cleaning pipe (3); the inner cavity of the connecting main pipe (31) and the ventilation gap (33) are both connected to the inner cavity of the powder cleaning combination pipe (2); the balancing air hole (301) is provided on the connecting outer sleeve (32) and is connected to the ventilation gap (33).

3. The powder cleaning gun suitable for large metal 3D printing equipment according to claim 1 or 2, characterized in that: The adjusting ring (4) is screwed onto the powder cleaning pipe (3).

4. The powder cleaning gun suitable for large metal 3D printing equipment according to claim 1 or 2, characterized in that: There are a plurality of balancing air holes (301) on the powder cleaning pipe (3), and the balancing air holes (301) are evenly distributed along the circumference of the powder cleaning pipe (3).

5. The powder cleaning gun suitable for large metal 3D printing equipment according to claim 1 or 2, characterized in that: The tail end of the powder cleaning pipe (3) is provided with a hose connector (302).

6. The powder cleaning gun suitable for large metal 3D printing equipment according to claim 1, characterized in that: The powder cleaning segmented pipe (21) has a first connection structure at one end and a second connection structure matching the first connection structure at the other end, and the two powder cleaning segmented pipes (21) can be connected via the first connection structure and the second connection structure.

7. The powder cleaning gun suitable for large metal 3D printing equipment according to claim 6 is characterized in that: The first connection structure and the second connection structure on the powder cleaning segmented pipe (21) are respectively an external thread segment (212) and an internal thread segment (211).

8. The powder cleaning gun suitable for large metal 3D printing equipment according to claim 1, characterized in that: The head end of the powder cleaning filter head (1) is hemispherical.

9. The powder cleaning gun suitable for large metal 3D printing equipment according to claim 1, characterized in that: It also includes a handle (5) fixedly connected to the powder cleaning pipe (3).

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