A dust discharge device

Abstract

The utility model relates to the technical field of metal dust discharge, and in particular discloses a dust discharge device, comprising: a printer shell component, comprising a shell and a printing cavity opened on the front side of the shell; a dust discharge component, comprising a screening cavity and a dust suction fan installed on the top of the printing cavity, the exhaust end of the dust suction fan is equipped with a dust conveying pipe, and the air inlet end of the dust suction fan is equipped with a dust suction pipe, the bottom of the screening cavity is equipped with a dust return pipe, and the interior of the screening cavity is provided with a screening component connected to the end of the dust conveying pipe; the utility model does not need manual dust suction, has higher efficiency, and does not have the risk of metal powder being inhaled into the respiratory tract, and has higher safety. At the same time, the discharged metal powder is screened and recovered by the screening component during dust discharge, which optimizes the processing process, reduces the processing time and cost, and has higher practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of metal dust discharge, and in particular discloses a dust discharge device. Background Art

[0002] The entire process device of metal 3D printing consists of a powder cylinder and a forming cylinder. The working powder cylinder piston (powder feeding piston) rises, and the powder spreading roller evenly spreads a layer of powder on the forming cylinder piston (working piston). The computer controls the two-dimensional scanning trajectory of the laser beam according to the slicing model of the prototype, selectively sintering the solid powder material to form a layer of the part. After completing a layer, the working piston drops a layer thickness, the powder spreading system spreads new powder, and controls the laser beam to scan and sinter a new layer. This cycle repeats, layer by layer, until the three-dimensional part is formed;

[0003] Since there will be excess metal powder in the workpiece printing area after printing, the excess metal powder needs to be discharged before taking out the printed object;

[0004] Traditional dust removal requires manual handheld vacuuming of the workpiece area. As the air flows, there is a risk of metal powder being inhaled into the respiratory tract.

[0005] At the same time, a small amount of metal powder will be caused to stick together during sintering, so it needs to be re-screened when reused. This will invisibly increase the processing steps, which not only increases the labor intensity, but also increases the production cost. Utility Model Content

[0006] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0007] In view of the problem that the existing artificial dust collection easily causes metal powder to be adsorbed into the respiratory tract, a dust discharge device is proposed.

[0008] Therefore, one of the objects of the present invention is to provide a dust discharge device.

[0009] In order to solve the above technical problems, the utility model provides the following technical solutions: a dust discharge device, comprising:

[0010] The printer housing component comprises a housing and a printing cavity opened on the front side of the housing;

[0011] The dust exhaust component includes a screening chamber and a dust suction fan installed on the top of the printing chamber, the exhaust end of the dust suction fan is equipped with a dust conveying pipe, and the air inlet end of the dust suction fan is equipped with a dust suction pipe, the bottom of the screening chamber is equipped with a dust return pipe, and the interior of the screening chamber is provided with a screening component connected to the end of the dust conveying pipe.

[0012] As a preferred solution of the dust discharge device of the utility model, the screening component includes a centrifugal screen and a chasing member located below the centrifugal screen.

[0013] As a preferred solution of the dust discharge device of the utility model, the centrifugal screen comprises a filter cartridge arranged in the screening chamber and a driven gear ring fixedly sleeved on the outside of the dust conveying pipe, the top of the filter cartridge is connected and fixed to the end of the dust conveying pipe, a driving gear is meshed on one side of the driven gear ring, and the driving gear is driven by a motor installed at the upper end of the screening chamber.

[0014] As a preferred solution of the dust discharge device of the utility model, the chasing member includes a disc, the outer side of the disc is fixed to the inside of the screening chamber through an equidistant annular array of connecting columns, and a material receiving groove is provided on the upper surface of the disc, and a discharge port is provided at the bottom of the disc.

[0015] As a preferred solution of the dust discharge device of the utility model, an inner arc cover is fixed at the axis of the material receiving trough, leakage holes are equidistantly opened on the surface of the inner arc cover, and a grinding block is arranged inside the inner arc cover.

[0016] As a preferred solution of the dust discharge device of the utility model, a fixing rod is fixed at the axis center of the upper surface of the grinding block, an eccentric block is fixed on the top of the fixing rod, and the plane of the eccentric block is fixed at the bottom axis center of the filter cartridge.

[0017] As a preferred solution of the dust discharge device of the utility model, it also includes a swing component, which is installed on the inner side of the printing cavity to drive the dust suction pipe to swing.

[0018] As a preferred solution of the dust discharge device described in the utility model, the swinging component includes a rotating seat, a bottom rod is installed above the rotating seat, an intermediate rod is rotatably connected to the inner side of one end of the bottom rod, and a servo motor for driving the intermediate rod to rotate is installed on the outer side of the bottom rod.

[0019] As a preferred solution of the dust discharge device of the utility model, the other end of the middle rod is connected to the head rod, and a servo motor 2 for driving the head rod to rotate is installed on the outer side of the middle rod.

[0020] As a preferred solution of the dust discharge device of the utility model, a dust cleaning piece is installed at the other end of the head rod, and C-shaped clips for clamping the dust suction pipe are fixed equidistantly on the outside of the head rod.

[0021] The beneficial effects of the utility model are as follows: the utility model does not need manual dust collection, has higher efficiency, and does not have the risk of metal powder being inhaled into the respiratory tract, has higher safety, and at the same time, the discharged metal powder is screened and recovered by the screening component during dust discharge, which optimizes the processing procedure, reduces the processing time and cost, and has higher practicality;

[0022] The screening component adopts the method of centrifugation followed by rolling, which can also effectively deal with the metal powder agglomerated after screening, thereby maximizing the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0024] Figure 1 It is a schematic diagram of the overall structure of the dust discharge device of the utility model.

[0025] Figure 2 It is a structural schematic diagram of the dust exhaust component in the dust exhaust device of the utility model.

[0026] Figure 3 Practical Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0027] Figure 4 It is a schematic diagram of the structure of the chasing member in the dust discharge device of the utility model.

[0028] Figure 5 It is a schematic diagram of the structure of the swing component in the dust discharge device of the utility model. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0032] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0033] Example 1

[0034] Reference Figure 1 , provides a schematic diagram of the overall structure of a dust discharge device, such as Figure 1-3 , a dust discharge device, comprising:

[0035] The printer housing component 100 includes a housing 101 and a printing cavity 102 opened at the front side of the housing 101;

[0036] The dust exhaust component 200 includes a screening chamber 201 and a dust suction fan 202 installed at the top of the printing chamber 102, a dust conveying pipe 203 is installed at the exhaust end of the dust suction fan 202, and a dust suction pipe 204 is installed at the air inlet end of the dust suction fan 202, a dust return pipe 205 is installed at the bottom of the screening chamber 201, and a screening component 206 connected to the end of the dust conveying pipe 203 is arranged inside the screening chamber 201.

[0037] Specifically, the dust suction tube 204 is made of thermoplastic dynamically vulcanized rubber and has an antistatic function;

[0038] Further, the screening assembly 206 includes a centrifugal screening element 206a;

[0039] The centrifugal screen 206a includes a filter cartridge 206a-1 arranged in the screening chamber 201 and a driven gear ring 206a-2 fixedly sleeved on the outside of the dust conveying pipe 203. The top of the filter cartridge 206a-1 is connected and fixed to the end of the dust conveying pipe 203. A driving gear 206a-3 is meshed on one side of the driven gear ring 206a-2. The driving gear 206a-3 is driven by a motor 206a-4 installed at the upper end of the screening chamber 201.

[0040] Specifically, the dust conveying pipe 203 has a truncation opening located above the driven gear ring 206a-2, and the truncation opening is rotatably connected via a sealed bearing. Therefore, when the motor 206a-4 drives the driving gear 206a-3 to drive the driven gear ring 206a-2 to rotate, a section of the dust conveying pipe 203 fixed with the driven gear ring 206a-2 will rotate synchronously.

[0041] Operation process: After printing is completed, the dust suction fan 202 is controlled to operate to generate negative pressure, so the dust suction pipe 204 has suction force, which sucks in the metal powder attached to the workpiece in the printing area. After being sucked in, the metal powder enters the filter cartridge 206a-1 through the dust conveying pipe 203. The filter cartridge 206a-1 is driven by the motor 206a-4, so centrifugal force is generated. The filter holes on the circumference of the filter cartridge 206a-1 are thrown out by the centrifugal force, thereby achieving screening. The screened metal powder is then returned to the powder bin of the shell 101 through the dust return pipe 205 for reuse. This structure does not require manual dust suction, is more efficient, and does not have the risk of metal powder being inhaled into the respiratory tract, and has higher safety. At the same time, the discharged metal powder is screened and recovered through the screening component 206 during dust discharge, which optimizes the processing process, reduces the processing time and cost, and has higher practicality.

[0042] Example 2

[0043] Reference Figure 4 , this embodiment is different from the first embodiment in that: the screening assembly 206 further includes a chasing member 206b located below the centrifugal screening member 206a;

[0044] The chaser 206b includes a disc 206b-1, the outer side of which is fixed to the interior of the screening chamber 201 via an equidistant annular array of connecting columns 206b-2, and a receiving groove 206b-3 is provided on the upper surface of the disc 206b-1, and a discharge port 206b-4 is provided at the bottom of the disc 206b-1.

[0045] Furthermore, an inner arc cover 206b-5 is fixed at the axis of the material receiving trough 206b-3, leakage holes 206b-6 are equidistantly provided on the surface of the inner arc cover 206b-5, and a grinding block 206b-7 is arranged inside the inner arc cover 206b-5.

[0046] Specifically, the grinding block 206b-7 is a solid semicircular steel structure, and the grinding block 206b-7 is slightly smaller than the inner arc cover 206b-5. The gap between the grinding block 206b-7 and the inner arc cover 206b-5 facilitates the sliding of agglomerated metal powder. The aperture of the leakage hole 206b-6 is consistent with the normal particle size of metal powder. When the grinding block 206b-7 rotates in the inner arc cover 206b-5, it will crush the agglomerated metal powder that slides into the inner arc cover 206b-5, thereby separating the agglomerated metal powder into the particle size of normal metal powder, and leaking out from the leakage hole 206b-6 and then discharged through the dust return pipe 205.

[0047] Furthermore, a fixing rod 206b-8 is fixed at the axis center of the upper surface of the grinding block 206b-7, an eccentric block 206b-9 is fixed at the top of the fixing rod 206b-8, and the plane of the eccentric block 206b-9 is fixed at the bottom axis center of the filter cartridge 206a-1.

[0048] Specifically, the eccentric block 206b-9 is composed of a horizontal block and an inclined block. The horizontal block is fixed to the axis at the bottom of the filter cartridge 206a-1, and the upper end of the fixed rod 206b-8 is fixed to the inclined surface of the eccentric block 206b-9. Therefore, the grinding block 206b-7 is slightly inclined as a whole, with only one arc-shaped outer side attached to the inner side of the inner arc cover 206b-5. When the filter cartridge 206a-1 rotates, it will drive the grinding block 206b-7 to roll along the arc surface of the inner arc cover 206b-5 to crush and separate the incoming agglomerated metal powder.

[0049] Specifically, the bottom of the filter cartridge 206a-1 is also provided with filter holes, which are larger than the filter holes on the circumference. The filter holes on the circumference are used to separate metal powder of normal particle size by centrifugation, and the filter holes at the bottom are used to allow the agglomerated metal powder to fall into the inner arc cover 206b-5.

[0050] The rest of the structure is the same as that of Example 1.

[0051] Operation process: The bottom of the filter cartridge 206a-1 is also provided with filter holes, which are larger than the filter holes on the circumference. The filter holes on the circumference are used to separate metal powder of normal particle size by centrifugation, and the filter holes at the bottom are used to allow the agglomerated metal powder to fall into the inner arc cover 206b-5. While the filter cartridge 206a-1 rotates, it will drive the grinding block 206b-7 to roll along the arc surface of the inner arc cover 206b-5, and the agglomerated metal powder entering will be crushed and separated. The agglomerated metal powder after screening can also be effectively treated, thereby maximizing the screening efficiency.

[0052] Example 3

[0053] Reference Figure 5 This embodiment is different from the above embodiments in that: the dust exhaust device of this embodiment further includes a swing component 300, which is installed on the inner side of the printing chamber 102 to drive the dust suction pipe 204 to swing.

[0054] Furthermore, the swing component 300 includes a rotating seat 301, a bottom rod 302 is installed above the rotating seat 301, an inner side of one end of the bottom rod 302 is rotatably connected to an intermediate rod 303, and a servo motor 304 for driving the intermediate rod 303 to rotate is installed on the outer side of the bottom rod 302.

[0055] Furthermore, the other end of the middle rod 303 is connected to the head rod 305 , and a servo motor 306 for driving the head rod 305 to rotate is installed on the outer side of the middle rod 303 .

[0056] Furthermore, a dust cleaning piece 307 is installed at the other end of the head rod 305 , and a C-shaped clip for clamping the dust suction pipe 204 is fixed equidistantly on the outer side of the head rod 305 .

[0057] Specifically, the inner diameter of the C-shaped clamp is consistent with the outer diameter of the dust suction tube 204 , so it is convenient to clamp the dust suction tube 204 and to control the swinging operation of the dust suction tube 204 .

[0058] Specifically, the dust cleaning component 307 includes a dust cleaning motor, the upper end of which is rotatably mounted on the end of the head rod 305. Under the weight of the dust cleaning motor, no matter where the end of the head rod 305 is, the dust cleaning motor is vertically downward. The dust cleaning motor is a low-speed motor, so it will not swing too much during operation. A brush is installed at the transmission end of the dust cleaning motor. The operation of the dust cleaning motor drives the brush to rotate, which can sweep away metal powder on the workpiece, making the vacuuming operation more convenient.

[0059] The rest of the structure is the same as that of Example 2.

[0060] Operation process: When vacuuming, the middle rod 303 and the head rod 305 are driven to rotate by the rotating seat 301, the servo motor 1 304 and the servo motor 2 306, so that the dust cleaning part 307 is driven to move to a suitable position. The operation of the dust cleaning motor drives the brush to rotate, which can sweep the metal powder on the workpiece, and the dust suction tube 204 clamped by the C-type clamp will absorb the metal powder.

[0061] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0062] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0063] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0064] 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 preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A dust discharge device, characterized in that: include: A printer housing component (100) comprises a housing (101) and a printing cavity (102) opened on the front side of the housing (101); The dust removal component (200) comprises a screening chamber (201) and a dust suction fan (202) installed at the top of a printing chamber (102); a dust conveying pipe (203) is installed at the exhaust end of the dust suction fan (202), and a dust suction pipe (204) is installed at the air inlet end of the dust suction fan (202); a dust return pipe (205) is installed at the bottom of the screening chamber (201), and a screening assembly (206) connected to the end of the dust conveying pipe (203) is arranged inside the screening chamber (201).

2. The dust discharge device according to claim 1, characterized in that: The screening component (206) comprises a centrifugal screening element (206a) and a chasing element (206b) located below the centrifugal screening element (206a).

3. The dust discharge device according to claim 2, characterized in that: The centrifugal sieve element (206a) comprises a filter cartridge (206a-1) arranged in a screening chamber (201) and a driven gear ring (206a-2) fixedly sleeved on the outside of a dust conveying pipe (203); the top of the filter cartridge (206a-1) is connected and fixed to the end of the dust conveying pipe (203); a driving gear (206a-3) is meshed on one side of the driven gear ring (206a-2); and the driving gear (206a-3) is driven by a motor (206a-4) installed at the upper end of the screening chamber (201).

4. The dust discharge device according to claim 2 or 3, characterized in that: The chaser (206b) comprises a disc (206b-1), the outer side of the disc (206b-1) being fixed to the inside of the screening chamber (201) via an equidistant annular array of connecting columns (206b-2), and a material receiving groove (206b-3) being provided on the upper surface of the disc (206b-1), and a material discharge port (206b-4) being provided at the bottom of the disc (206b-1).

5. The dust discharge device according to claim 4, characterized in that: An inner arc cover (206b-5) is fixed at the axis of the material receiving trough (206b-3), material leakage holes (206b-6) are equidistantly provided on the surface of the inner arc cover (206b-5), and a grinding block (206b-7) is arranged inside the inner arc cover (206b-5).

6. The dust discharge device according to claim 5, characterized in that: A fixing rod (206b-8) is fixed at the axis center of the upper surface of the grinding block (206b-7), an eccentric block (206b-9) is fixed at the top of the fixing rod (206b-8), and the plane of the eccentric block (206b-9) is fixed at the bottom axis center of the filter cartridge (206a-1).

7. The dust discharge device according to claim 6, characterized in that: It also includes a swing component (300) which is installed inside the printing chamber (102) and is used to drive the dust suction pipe (204) to swing.

8. The dust discharge device according to claim 7, characterized in that: The swing component (300) comprises a rotating seat (301), a bottom rod (302) is installed above the rotating seat (301), an inner side of one end of the bottom rod (302) is rotatably connected to an intermediate rod (303), and a servo motor (304) for driving the intermediate rod (303) to rotate is installed on the outer side of the bottom rod (302).

9. The dust discharge device according to claim 8, characterized in that: The other end of the middle rod (303) is connected to the head rod (305), and a servo motor 2 (306) for driving the head rod (305) to rotate is installed on the outer side of the middle rod (303).

10. The dust discharge device according to claim 9, characterized in that: A dust cleaning piece (307) is installed at the other end of the head rod (305), and C-shaped clips for clamping the dust suction pipe (204) are fixed equidistantly on the outside of the head rod (305).

Images