Dust treatment device and 3D printer

Abstract

The utility model relates to a dust treatment device, which is integrated on a 3D (three-dimensional) printer and comprises a collection box and a negative pressure part, the collecting box is arranged on a printing head of the 3D printer and used for collecting dust and / or flying ink generated in the printing process. An isolating layer is arranged in the collecting box and is used for adsorbing dust and / or flying ink collected by the collecting box; and the negative pressure part is communicated with the collecting box and provides negative pressure suction force for the collecting box. The dust treatment device disclosed by the utility model is used for collecting and filtering dust and flying ink generated in the printing process, the printing head does not need to be cleaned frequently, the printing efficiency is effectively improved, and the production cost and the equipment maintenance cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a dust treatment device integrated on a 3D printer. Background Art

[0002] Three-Dimension Printing (3DP) uses a liquid connector to solidify each layer of powder to create a three-dimensional solid prototype. The specific printing process is: when feeding, the powder is spread on the printing platform through a pressure roller. Under the control of the software system, the print head runs according to the two-dimensional data of the model section, and selectively sprays the liquid connector at the corresponding position of the powder surface to finally form a layer; after one layer is solidified, the printing platform descends, the pressure roller spreads the powder again, and then starts a new layer of bonding, and this cycle continues until the entire printed product is bonded.

[0003] During the printing process of industrial-grade 3D printing equipment for casting, the print head sprays ink, i.e., a liquid connector, onto the powder-laying surface at high speed. The ink "smash" onto the powder-laying surface at high speed, which not only stirs up the dust on the powder-laying surface, but also some of the ink will float in the air after atomization to form flying ink. The floating dust mixes with the flying ink and adheres to various parts of the equipment, affecting the normal inkjet of the print head and the appearance of the equipment. In the prior art, after printing for a certain period of time, it is necessary to clean the impurities adhered to the bottom plate of the print head at the cleaning station to ensure that the print head can spray ink normally. This process is complicated to operate, and the action of cleaning the print head will reduce printing efficiency; and frequent cleaning will also cause wear of the print head, waste of cleaning agent, etc., increasing printing costs. In addition, the appearance of the printing equipment has become black due to long-term operation and can only be improved by repainting, which has high maintenance costs. Summary of the invention

[0004] Based on this, it is necessary to provide a dust treatment device and a 3D printer to address the above technical problems.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] The utility model embodiment discloses a dust treatment device, which is integrated on a 3D printer, and comprises a collection box and a negative pressure part; the collection box is arranged on the print head of the 3D printer, and is used to collect dust and / or flying ink generated during the printing process; an isolation layer is arranged in the collection box, and the isolation layer is used to absorb the dust and / or flying ink collected by the collection box; the negative pressure part is connected with the collection box, and provides negative pressure suction for the collection box.

[0007] In one embodiment, the collection box includes a box body and a cover body that match each other; the box body is installed on the outside of the print head, the box body is open on one side of the powder spreading surface of the 3D printer, the cover body is installed on the opening, and the cover body is provided with a collection hole; the box body is provided with an air outlet connected to the negative pressure part, and the isolation layer is provided between the air outlet and the cover body.

[0008] In one embodiment, the distance between the cover and the powder spreading surface is greater than the distance between the print head and the powder spreading surface.

[0009] In one embodiment, the collection box is an annular structure surrounding the print head.

[0010] In one embodiment, the collecting box is a square structure, and at least two collecting boxes are respectively installed on the front and rear sides of the print head along the printing direction.

[0011] In one embodiment, the isolation layer is made of honeycomb porous material.

[0012] In one embodiment, the negative pressure part includes a negative pressure generator and a negative pressure box, and the negative pressure generator, the negative pressure box and the collection box are connected in sequence through a pipeline.

[0013] In one embodiment, a first pressure regulating valve is provided between the negative pressure box and the collecting box, and the first pressure regulating valve is used to adjust the suction of the collecting box, and the suction distance of the collecting box is smaller than the distance between the collecting box and the powder laying surface.

[0014] In a second aspect, an embodiment of the utility model further discloses a 3D printer integrated with any of the above-mentioned dust treatment devices.

[0015] The technical solution adopted by the utility model can achieve the following beneficial effects:

[0016] The dust treatment device disclosed by the utility model has a simple structure and ingenious design. The collection box for collecting dust and flying ink is directly integrated on the print head. The dust and flying ink in the air can be sucked away during the printing process without stopping the machine. The operation is simple and the printing efficiency is effectively improved.

[0017] The dust treatment device disclosed by the utility model has an isolation layer in the collection box to purify the airflow containing dust and flying ink. The isolation layer can be directly replaced after printing is completed, and the maintenance cost is low, which effectively reduces the printing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the dust treatment device disclosed in the embodiment of the utility model;

[0019] Figure 2 An exploded view of a collection box disclosed in an optional embodiment of the utility model;

[0020] Description of reference numerals:

[0021] 100-print head;

[0022] 200-collection box, 210-box body, 220-cover body, 221-collection hole, 230-isolation layer, 240-single hole joint;

[0023] 310 - negative pressure generator, 320 - negative pressure box, 330 - first regulating valve, 340 - porous joint, 350 - pipeline. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0025] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a centered element at the same time. The terms "vertical", "horizontal", "left", "right", "top", "bottom", "bottom end", "top end" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] The utility model discloses a dust treatment device, such as Figure 1As shown, the disclosed dust treatment device includes a collection box 200 and a negative pressure part connected to the collection box 200, wherein the collection box 200 can be integrated into the print head 100 of the 3D printer, and is used to collect dust and flying ink stirred up by the print head 100 during printing due to high-speed ink jetting onto the powder-laying surface below it; the negative pressure part can be integrated into the 3D printer and connected to the collection box 200 through a number of pipes 350, and the negative pressure part can provide negative pressure suction for the collection box 200, so that the collection box 200 can suck dust and flying ink in the air into the collection box 200. The gas in the pipe 350 flows from the collection box 200 to the negative pressure part, specifically as shown in FIG. Figure 1 Indicated by arrow direction.

[0028] In an optional embodiment disclosed in the present invention, the collection box 200 may be an annular structure, which is sleeved on the outside of the print head 100, and can collect dust and flying ink all around the print head 100. Preferably, the center of the collection box 200 can coincide with the center of the print head 100 to improve the installation stability of the collection box 200 on the print head 100 and the uniformity of collecting dust and flying ink. Of course, the annular structure of the collection box 200 can be a circular ring, a square ring or a polygonal ring structure, as long as it can be installed around the outside of the print head 100 and collect dust and flying ink, and this embodiment does not make specific restrictions on this.

[0029] In another optional embodiment disclosed in the present utility model, Figure 2 As shown, the collecting box 200 may be a square structure, and a plurality of collecting boxes 200 may be arranged at intervals on the side of the print head 100 to collect dust and flying ink; wherein at least one collecting box 200 is installed on the front side of the print head 100, and at least one collecting box 200 is installed on the rear side of the print head 100. It should be noted that the running direction of the print head 100, i.e., the printing direction, is the front-to-back direction.

[0030] In the embodiments disclosed in the present utility model, Figure 2 As shown, the collection box 200 may include a box body 210 and a cover body 220. The box body 210 may be an annular or directional structure. Correspondingly, the cover body 220 should also be an annular or square structure that can be matched and assembled with the box body 210. Specifically, the box body 210 is open at the bottom of the box body 210, which faces the powder-laying surface of the 3D printer. The top wall and / or side wall of the box body 210 are provided with a plurality of air vents, which are connected to the inside and outside of the box body 210. A single-hole joint 240 is installed at the outer end of the air vent. One end of the pipe 350 is connected to the single-hole joint 240, and the other end is connected to the negative pressure part. In addition, the cover body 220 is installed at the opening of the box body 210, and a plurality of collection holes 221 are evenly spaced on the cover body 220. Under the suction of the negative pressure part, the dust and flying ink in the air are sucked into the box body 210 through the collection holes 221.

[0031] Furthermore, an isolation layer 230 is provided in the collection box 210 for absorbing dust and flying ink collected in the box body 210 to prevent dust and flying ink from entering the pipe 350 or the negative pressure part along with the airflow and causing blockage of the pipe 350 or failure of the negative pressure part.

[0032] Preferably, the isolation layer 230 can be disposed between the air outlet and the cover body 220 . After each printing is completed, the cover body 220 can be disassembled to directly replace or clean the isolation layer 230 , and the maintenance cost is low.

[0033] Furthermore, the isolation layer 230 may be made of a honeycomb porous material.

[0034] In the embodiment disclosed in the present utility model, the distance between the cover body 220 and the powder spreading surface should be greater than the distance between the bottom of the print head 100 and the powder spreading surface, that is, the height of the cover body 220 should be higher than the bottom of the print head 100 to prevent the suction force of the collection hole 221 from damaging the powder spreading surface or the ink flow direction of the print head 100.

[0035] Furthermore, the negative pressure part can also be provided with a pressure regulating structure for adjusting the suction of the collecting box 200. The suction distance of the collecting hole 221 should be smaller than the distance between it and the powder laying surface to ensure that the suction of the collecting hole 221 will not damage the powder laying surface.

[0036] In the embodiment disclosed in the utility model, the negative pressure part may include a negative pressure generator 310, a negative pressure box 320, a first pressure regulating valve 330 and a porous joint 340, and the negative pressure generator 310, the negative pressure box 320, the first pressure regulating valve 330 and the porous joint 340 are connected in sequence through a pipeline. Each porous joint 340 may be provided with an inlet end connected to the first regulating valve 330; each porous joint 340 may also be provided with multiple outlet ends for connecting to multiple single-hole joints 240 through a pipeline 350. The negative pressure generator 310 is used to generate a negative pressure airflow and discharge the gas filtered by the isolation layer 230 into the atmosphere. The first regulating valve 330 is used to adjust the suction of the collection box 200. Of course, the negative pressure generator 310 may also be provided with a second regulating valve for starting and stopping the negative pressure generator 310, and further controlling the start and stop of the dust treatment device.

[0037] In the embodiment disclosed in the utility model, before the printing operation starts, the dust handling device can be started and the height of the first regulating valve 330 and / or the collecting box 200 can be adjusted to ensure that the suction distance of the collecting hole 221 is less than the distance between it and the powder spreading surface, and to ensure that the height of the cover body 220 is higher than the bottom of the print head 100, so as to prevent the suction of the collecting hole 221 from damaging the powder spreading surface or the ink flow direction of the print head 100. After the adjustment is completed, the 3D printer can be started for printing. After the printing is completed, the dust handling device is turned off, the collecting box 200 is disassembled, and the isolation layer 230 is replaced or cleaned.

[0038] On the second aspect, an embodiment of the utility model further discloses a 3D printer. The disclosed 3D printer can be integrated with the dust treatment device described in any of the above embodiments, which is used to collect and filter the dust and flying ink generated during the printing process. There is no need to frequently clean the print head during the printing process, thereby improving printing efficiency and reducing production costs and equipment maintenance costs.

[0039] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A dust treatment device, the dust treatment device is integrated on a 3D printer, characterized in that: The dust treatment device includes a collection box and a negative pressure part; the collection box is arranged on the print head of the 3D printer, and is used to collect dust and / or flying ink generated during the printing process; an isolation layer is arranged in the collection box, and the isolation layer absorbs the dust and / or flying ink collected by the collection box; the negative pressure part is connected to the collection box to provide negative pressure suction for the collection box.

2. The dust treatment device according to claim 1, characterized in that: The collection box comprises a box body and a cover body that match each other; the box body is installed on the outside of the print head, the box body is opened on one side facing the powder spreading surface of the 3D printer, the cover body is installed on the opening, and the cover body is provided with a collection hole; The box body is provided with an air port connected to the negative pressure part, and the isolation layer is arranged between the air port and the cover body.

3. The dust treatment device according to claim 2, characterized in that: The distance between the cover body and the powder spreading surface is greater than the distance between the print head and the powder spreading surface.

4. The dust treatment device according to claim 1, characterized in that: The collecting box is an annular structure surrounding the printing head.

5. The dust treatment device according to claim 1, characterized in that: The collecting box is a square structure, and at least two collecting boxes are respectively installed on the front and rear sides of the printing head along the printing direction.

6. The dust treatment device according to claim 1, characterized in that: The isolation layer is made of honeycomb porous material.

7. The dust treatment device according to claim 1, characterized in that: The negative pressure part comprises a negative pressure generator and a negative pressure box. The negative pressure generator, the negative pressure box and the collecting box are connected in sequence through a pipeline.

8. The dust treatment device according to claim 7, characterized in that: A first pressure regulating valve is provided between the negative pressure box and the collecting box, and the first pressure regulating valve is used to adjust the suction of the collecting box, and the suction distance of the collecting box is smaller than the distance between the collecting box and the powder laying surface.

9. A 3D printer, characterized in that: A dust handling device as described in any one of claims 1 to 8 is integrated.

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