3D printing powder cleaning device

Abstract

The invention discloses a 3D printing powder cleaning device, and belongs to the technical field of 3D printing. Comprising a 3D printing workbench, a powder collecting mechanism, a powder suction moving mechanism and a powder suction mechanism. The powder collecting mechanism is arranged below the 3D printing workbench, comprises a powder collecting groove and a turning plate assembly and is used for recycling most powder in the printing process, a printing groove is formed in the position, close to the middle, of the top end of the 3D printing workbench, the powder suction mechanism is arranged on one side of the top end, and the powder suction moving mechanism is arranged on one side of the 3D printing workbench. Comprising a lifting translation assembly and an adsorption cover arranged on the lifting translation assembly, is used for achieving up-down and left-right movement of the adsorption cover and is connected with the adsorption cover through an air supply hose. Through the structural design of the turning plate assembly and the powder suction mechanism of the powder collecting mechanism, a large amount of powder on a base plate and a small amount of powder on the surface of a workpiece are recycled, the treatment effect is improved, meanwhile, metal powder can be recycled conveniently, and therefore resources are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a 3D printing powder cleaning device. Background Art

[0002] Ordinary printers used in daily life can print flat objects designed by computers, while the working principles of 3D printers are basically the same as those of ordinary printers, except that the printing materials are slightly different. The printing materials of ordinary printers are ink and paper, while 3D printers are equipped with different "printing materials" such as metal, ceramics, plastic, sand, etc., which are real raw materials. After the printer is connected to the computer, computer-aided design software is used to convert the digital model into a physical model, and then the "printing materials" are stacked layer by layer through the 3D printer, eventually turning the blueprint on the computer into a physical object.

[0003] After the existing 3D printers are finished printing, a large amount of powder will be spread on the workbench, and there will also be powder on the surface of the molded workpiece, so the workbench and the printed workpiece need to be cleaned and recycled. In the current production process, the conventional way to clean the powder is for workers to manually clean the powder with a handheld brush. After the workpiece is printed, the powder cleaning staff wear protective items such as dust masks and protective glasses to sweep the powder on the workbench and the molded workpiece. However, the manual cleaning efficiency of the workers is slow, it takes a lot of time, and the cleaning effect is not ideal. At the same time, the powder in the workbench is not easy to collect after it is swept into one place. Therefore, the existing cleaning method will not only cause waste of powder, but also affect the 3D printing effect. Summary of the invention

[0004] The purpose of the present invention is to provide a 3D printing powder cleaning device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides a 3D printing powder cleaning device, comprising:

[0006] A 3D printing workbench, wherein a printing slot is provided on the top of the 3D printing workbench, wherein a substrate and a supporting mesh plate arranged above the substrate and fixedly connected to the inside of the printing slot are arranged in the printing slot;

[0007] A powder collecting mechanism, comprising a powder collecting trough and a flap assembly, wherein the powder collecting trough is arranged on one side below the 3D printing workbench, and the flap assembly is arranged in the powder collecting trough and connected to the bottom of the base plate;

[0008] A powder suction movement mechanism, comprising a lifting and translation assembly and a suction cover arranged on the lifting and translation assembly, wherein the lifting and translation assembly is arranged on one side of the 3D printing workbench;

[0009] A powder suction mechanism is arranged on the top of the 3D printing workbench, and the powder suction mechanism is connected to the adsorption cover through an air supply hose.

[0010] Preferably, a first groove is formed around the printing slot, and the inner bottom of the first groove is tightly fitted with the bottom end of the adsorption cover, so that the powder suction work can be carried out in a sealed environment, thereby reducing the operation risk.

[0011] Preferably, the flap assembly includes a flap motor, the output shaft of the flap motor passes through the 3D printing workbench and is connected to a transmission shaft, the transmission shaft is fixedly connected with a first connecting rod and a second connecting rod respectively, the other ends of the first connecting rod and the second connecting rod are respectively hinged to one end of the third connecting rod and the fourth connecting rod, and the other ends of the third connecting rod and the fourth connecting rod are respectively hinged to the bottom end of the base plate.

[0012] Preferably, a second groove is opened inside the other side below the 3D printing workbench, and the transmission shaft is arranged in the second groove.

[0013] Preferably, a powder pushing assembly is provided in the powder collecting trough, and the powder pushing assembly includes a powder pushing motor arranged outside the 3D printing workbench, the output shaft of the powder pushing motor passes through the 3D printing workbench and is connected to a telescopic rod arranged in the powder collecting trough, and the other end of the telescopic rod is fixedly connected to a powder pushing plate.

[0014] Preferably, the lifting and translation assembly includes a hydraulic cylinder and a hydraulic rod arranged on the hydraulic cylinder, a screw rod is vertically connected above the hydraulic rod, a slider is arranged on the screw rod, and a driving motor is arranged at one end of the screw rod to drive the slider to move left and right on the screw rod.

[0015] Preferably, an outer side wall of the screw rod is provided with an external thread, a third groove is formed through the side wall of the slider, and an internal thread corresponding to the external thread is provided in the third groove.

[0016] Preferably, a fixing plate is fixedly mounted on one side of the top of the 3D printing workbench, and the powder suction mechanism is arranged on a side of the fixing plate close to the printing slot.

[0017] Preferably, the powder suction mechanism includes a powder suction filter, the powder suction port of the powder suction filter is connected to the powder outlet of the adsorption cover through an air supply hose, the powder outlet at the bottom of the powder suction filter is connected to a powder collection box, and one side of the powder suction filter is connected to a negative pressure motor.

[0018] Preferably, a door body is provided on one side of the powder collecting trough, one side of the door body is hingedly connected to the powder collecting trough, the other side of the door body is snap-connected to the powder collecting trough, and a handle is provided on the door body.

[0019] Therefore, the present invention adopts the above-mentioned 3D printing powder cleaning device. Most of the powder generated during the printing process falls onto the substrate through the grid of the supporting screen. The flap assembly moves the powder on the substrate directly into the powder collecting trough below, and then the powder in the powder collecting trough is pushed to the door body by the powder pushing assembly. The door body is opened for direct recovery. The small amount of powder remaining on the surface of the formed workpiece and the substrate can be directly negatively adsorbed by the powder suction mechanism, and then the powder is absorbed into the powder collecting box of the powder suction mechanism, thereby further realizing the recycling of the powder. The present invention recycles a large amount of powder on the substrate and a small amount of powder on the surface of the workpiece respectively through the two-part structure, thereby improving the treatment effect and facilitating the recycling of metal powder, thereby saving resources.

[0020] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the external three-dimensional structure of a 3D printing powder cleaning device of the present invention;

[0022] Figure 2 It is a schematic cross-sectional structure diagram of a 3D printing powder cleaning device of the present invention;

[0023] Figure 3 It is a structural schematic diagram of a flap assembly of a 3D printing powder cleaning device of the present invention;

[0024] Figure 4 It is a structural schematic diagram of a powder pushing component of a 3D printing powder cleaning device of the present invention;

[0025] Reference numerals

[0026] 1. 3D printing workbench; 2. Printing tank; 3. Base plate; 4. Support mesh plate;

[0027] 5. Powder collecting mechanism; 51. Powder collecting tank; 52. Turning plate assembly; 521. Turning plate motor; 522. Transmission shaft; 523. First connecting rod; 524. Second connecting rod; 525. Third connecting rod; 526. Fourth connecting rod; 53. Powder pushing assembly; 531. Powder pushing motor; 532. Telescopic rod; 533. Powder pushing plate; 54. Door body; 55. Handle;

[0028] 6. Powder suction moving mechanism; 61. Lifting and translation assembly; 611. Hydraulic cylinder; 612. Hydraulic rod; 613. Screw; 614. Sliding block; 62. Adsorption cover;

[0029] 7. Powder suction mechanism; 71. Powder suction filter; 72. Powder collecting box; 73. Negative pressure motor;

[0030] 8. Air supply hose; 9. First groove; 10. Fixing plate. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0032] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] The specific connection methods of each part all adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0034] Example

[0035] like Figure 1-Figure 4 As shown, the present embodiment provides a 3D printing powder cleaning device, including a 3D printing workbench 1, a powder collecting mechanism 5, a powder suction moving mechanism 6 and a powder suction mechanism 7; the powder collecting mechanism 5 is arranged below the 3D printing workbench 1, and is used to recover most of the powder in the printing process. A printing slot 2 is provided near the middle position at the top of the 3D printing workbench 1, a fixed plate 10 is fixedly installed on one side of the top of the 3D printing workbench 1, the powder suction mechanism 7 is arranged on the side of the fixed plate 10 close to the printing slot 2, the powder suction moving mechanism 6 is arranged on one side of the 3D printing workbench 1, and is not connected to the 3D printing workbench 1, and includes a lifting and translational component 61 and an adsorption cover 62 arranged on the lifting and translational component 61, which is used to realize the up and down and left and right movement of the adsorption cover 62, and the powder suction moving mechanism 6 cooperates with the powder suction mechanism 7 to realize further absorption of the powder, improve the cleaning efficiency, and avoid powder residue.

[0036] The printing tank 2 is provided with a substrate 3 and a support screen 4 arranged above the substrate 3 and fixedly connected to the inside of the printing tank 2. The corresponding laser 3D powder printing operation is performed in the printing tank 2, and the support screen 4 is used to place the printed workpiece. It should be noted here that the laser generating mechanism used for printing is arranged on the other side of the top of the 3D printing workbench 1, and the emitted laser beam can normally reach the printing tank 2. The laser generating mechanism is a common structure in the art and is not described in detail here.

[0037] The powder collecting mechanism 5 includes a powder collecting trough 51, a flap assembly 52 and a powder pushing assembly 53. The powder collecting trough 51 is arranged on the lower side of the 3D printing workbench 1. The flap assembly 52 and the powder pushing assembly 53 are both arranged in the powder collecting trough 51. The top of the flap assembly 52 is connected to the bottom of the substrate 3. Driving the flap assembly 52 can realize the rotation of the substrate 3, and the powder falling on the substrate 3 can directly fall into the powder collecting trough 51.

[0038] Specifically, a second groove is provided inside the other side below the 3D printing workbench 1, and a transmission shaft 522 is arranged in the second groove. The flap assembly 52 includes a flap motor 521, and the output shaft of the flap motor 521 passes through the 3D printing workbench 1 and is connected to the transmission shaft 522. The transmission shaft 522 is respectively fixedly connected with a first connecting rod 523 and a second connecting rod 524, and the other ends of the first connecting rod 523 and the second connecting rod 524 are respectively hinged to one end of the third connecting rod 525 and the fourth connecting rod 526, and the other ends of the third connecting rod 525 and the fourth connecting rod 526 are respectively hinged to the bottom end of the substrate 3. The first connecting rod 523, the second connecting rod 524, the third connecting rod 525 and the fourth connecting rod 526 form a connecting rod mechanism, which drives the substrate 3 to rotate around the hinge of the printing slot 2.

[0039] The powder pushing assembly 53 includes a powder pushing motor 531 disposed outside the 3D printing workbench 1. The output shaft of the powder pushing motor 531 passes through the 3D printing workbench 1 and is connected to a telescopic rod 532 disposed in the powder collecting tank 51. The other end of the telescopic rod 532 is fixedly connected to a powder pushing plate 533. The pushing plate motor drives the telescopic rod 532 to move forward and backward. A door body 54 is disposed on the side of the powder collecting tank 51 facing the pushing plate. One side of the door body 54 is hingedly connected to the powder collecting tank 51, and the other side of the door body 54 is connected to the powder collecting tank 51 by snapping. A handle 55 is disposed on the door body 54. When the powder falling into the powder collecting tank 51 is pushed to the door body 54, the door body 54 is opened to directly recover the powder.

[0040] The powder suction movement mechanism 6 includes a lifting and translation component 61 and a suction cover 62 arranged on the lifting and translation component 61. The lifting and translation component 61 is arranged on one side of the 3D printing workbench 1; the lifting and translation component 61 includes a hydraulic cylinder 611 and a hydraulic rod 612 arranged on the hydraulic cylinder 611, a screw 613 is vertically connected above the hydraulic rod 612, a slider 614 is arranged on the screw 613, an outer wall of the screw 613 is provided with an external thread, a side wall of the slider 614 is penetrated by a third groove, an internal thread corresponding to the external thread is arranged in the third groove, and a driving motor is arranged at one end of the screw 613 to drive the slider 614 to move left and right on the screw 613.

[0041] The powder suction mechanism 7 is arranged on the top of the 3D printing workbench 1, and includes a powder suction filter 71. The powder suction port of the powder suction filter 71 is connected to the powder outlet of the adsorption hood 62 through an air supply hose 8. The powder outlet at the bottom of the powder suction filter 71 is connected to a powder collecting box 72, and one side of the powder suction filter 71 is connected to a negative pressure motor 73.

[0042] It should be noted that when performing the 3D printing operation, the printing slot 2 is not located directly below the adsorption cover 62. The laser generating mechanism used for printing is set on the other side of the 3D printing workbench 1. The emitted laser beam can normally reach the printing slot 2. When the printing operation is completed, the adsorption cover 62 is driven by the lifting and translation assembly 61 to move to the top of the printing slot 2, and then the powder suction operation is performed. The first groove 9 is opened around the printing slot 2, and the inner bottom of the first groove 9 is tightly fitted with the bottom end of the adsorption cover 62, so that the powder suction work can be carried out in a sealed environment, thereby reducing the operation risk.

[0043] After completing the 3D printing work, most of the powder generated during the printing process will fall onto the lower substrate 3 through the supporting mesh plate 4. At this time, the flap assembly 52 is driven, and the substrate 3 rotates downward. The powder on the substrate 3 falls directly into the powder collecting groove 51 below, and then the flap assembly 52 is driven in reverse, and the substrate 3 returns to its original position. Then the lifting and translation assembly 61 is driven to place the adsorption cover 62 directly above the printing groove 2, and then the bottom end falls into the first groove 9 to fit tightly to form a sealed environment, and then the powder suction assembly is driven to absorb the powder. At this time, the remaining small amount of powder enters the powder collecting box 72 through negative pressure adsorption. Negative pressure adsorption also avoids powder residue in dead corners, improves cleaning efficiency, and can recycle the powder at the same time.

[0044] Therefore, the present invention adopts the above-mentioned 3D printing powder cleaning device, which can effectively remove and recover the powder remaining on the 3D printing product and the substrate, while improving the cleaning efficiency and facilitating the recycling of metal powder, thereby saving resources.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A 3D printing powder cleaning device, characterized in that: include: A 3D printing workbench, wherein a printing slot is provided on the top of the 3D printing workbench, wherein a substrate and a supporting mesh plate arranged above the substrate and fixedly connected to the inside of the printing slot are arranged in the printing slot; A powder collecting mechanism, comprising a powder collecting trough and a flap assembly, wherein the powder collecting trough is arranged on one side below the 3D printing workbench, and the flap assembly is arranged in the powder collecting trough and connected to the bottom of the base plate; A powder suction movement mechanism, comprising a lifting and translation assembly and a suction cover arranged on the lifting and translation assembly, wherein the lifting and translation assembly is arranged on one side of the 3D printing workbench; A powder suction mechanism is arranged on the top of the 3D printing workbench, and the powder suction mechanism is connected to the adsorption cover through an air supply hose.

2. A 3D printing powder cleaning device according to claim 1, characterized in that: A first groove is formed around the printing slot, and the inner bottom of the first groove is tightly fitted with the bottom end of the adsorption cover.

3. A 3D printing powder cleaning device according to claim 1, characterized in that: The flap assembly includes a flap motor, the output shaft of the flap motor passes through the 3D printing workbench and is connected to a transmission shaft, the transmission shaft is fixedly connected with a first connecting rod and a second connecting rod respectively, the other ends of the first connecting rod and the second connecting rod are respectively hinged to one end of the third connecting rod and the fourth connecting rod, and the other ends of the third connecting rod and the fourth connecting rod are respectively hinged to the bottom end of the base plate.

4. A 3D printing powder cleaning device according to claim 3, characterized in that: A second groove is provided inside the other side below the 3D printing workbench, and the transmission shaft is arranged in the second groove.

5. A 3D printing powder cleaning device according to claim 1, characterized in that: A powder pushing assembly is arranged in the powder collecting tank, and the powder pushing assembly includes a powder pushing motor arranged outside the 3D printing workbench, and the output shaft of the powder pushing motor passes through the 3D printing workbench and is connected to a telescopic rod arranged in the powder collecting tank, and the other end of the telescopic rod is fixedly connected to a powder pushing plate.

6. A 3D printing powder cleaning device according to claim 1, characterized in that: The lifting and translation assembly includes a hydraulic cylinder and a hydraulic rod arranged on the hydraulic cylinder, a screw rod is vertically connected above the hydraulic rod, a slider is arranged on the screw rod, and a driving motor is arranged at one end of the screw rod to drive the slider to move left and right on the screw rod.

7. A 3D printing powder cleaning device according to claim 6, characterized in that: An external thread is arranged on the outer side wall of the screw rod, a third groove is penetrated through the side wall of the sliding block, and an internal thread corresponding to the external thread is arranged in the third groove.

8. A 3D printing powder cleaning device according to claim 1, characterized in that: A fixing plate is fixedly installed on one side of the top of the 3D printing workbench, and the powder suction mechanism is arranged on one side of the fixing plate close to the printing slot.

9. A 3D printing powder cleaning device according to claim 1, characterized in that: The powder suction mechanism comprises a powder suction filter, the powder suction port of the powder suction filter is connected to the powder outlet of the adsorption cover through an air supply hose, the powder outlet at the bottom of the powder suction filter is connected to a powder collection box, and one side of the powder suction filter is connected to a negative pressure motor.

10. A 3D printing powder cleaning device according to claim 1, characterized in that: A door body is arranged on one side of the powder collecting trough, one side of the door body is hingedly connected to the powder collecting trough, the other side of the door body is clampedly connected to the powder collecting trough, and a handle is arranged on the door body.

Images