3D printing equipment based on digital light processing

Abstract

The utility model discloses a 3D printing device based on digital light processing, which comprises a printer base, the bottom of the printer base is fixedly connected with a trough, one side of the top of the printer base is fixedly provided with a lifting mechanism, the edge of the top surface of the printer base is fixedly connected with a lower shell, and two side surfaces of the lower shell are respectively and fixedly provided with a lock catch. Two hinges are symmetrically and fixedly connected to the top of the back face of the lower shell, an upper shell is fixedly connected to the other sides of the hinges, two lock hooks are fixedly arranged on the two side faces of the upper shell correspondingly, lock catches are matched with the lock hooks, and a purification mechanism is fixedly connected to the top of the upper shell. And toxic gas is filtered and adsorbed through the purification mechanism, so that the toxic gas is prevented from polluting air, harm caused by inhalation of the toxic gas to a human body is prevented, and dust in external air can be prevented from falling into photosensitive resin in the material groove during printing to affect the printing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a 3D printing device based on digital light processing. Background Art

[0002] Digital light processing printers use photosensitive resin as the molding material and a UV projector as the light source. The projected light is controlled by a digital micromirror device (DMD), projecting and curing one layer at a time. When the photosensitive resin cures under the UV light, it produces unpleasant and toxic fumes that are released directly into the air, polluting the air and causing irreversible damage to the body. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0004] In order to solve the above problems, the present utility model is proposed.

[0005] Therefore, the purpose of the present utility model is to provide a 3D printing device based on digital light processing, in which upper and lower shells are set on the printer to seal it so that the toxic gases generated by printing cannot directly enter the air. A purification mechanism is set on the top of the upper shell so that the generated toxic gases are adsorbed by the filter plate, avoiding toxic gases from polluting the air and preventing harm caused by human inhalation.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A 3D printing device based on digital light processing includes a printer base, a material trough is fixedly connected to the bottom of the printer base, a lifting mechanism is fixedly provided on one side of the top of the printer base, a lower shell is fixedly connected to the top edge of the printer base, lock buckles are fixedly provided on two side surfaces of the lower shell, two hinges are symmetrically fixedly connected to the top of the back of the lower shell, the other side of the hinge is fixedly connected to the upper shell, two lock hooks are fixedly provided on two side surfaces of the upper shell, the lock buckles cooperate with the lock hooks, and a purification mechanism is fixedly connected to the top of the upper shell.

[0008] The purification mechanism includes a transverse partition with an air inlet and an air outlet on its surface, a vertical partition on its top, an exhaust assembly fixedly connected to the air outlet, and a filter adsorption assembly fixedly connected to the top of the inner wall of the upper shell.

[0009] The exhaust assembly includes a fan bracket, which is arranged above the air outlet. The top surface of the fan bracket is fixedly connected to a motor, and the power output end of the motor is fixedly connected to an exhaust fan.

[0010] The filter adsorption assembly includes mounting grooves, two mounting grooves are fixedly arranged at equal distances on the top surface of the side wall of the vertical partition, a filter plate is slidably connected in the mounting groove, and a sealing plate is fixedly connected to one end of the filter plate.

[0011] As a preferred solution of a 3D printing device based on digital light processing of the present invention, three first springs are fixedly connected at equal distances to the bottom of the installation groove, and two self-locking components are symmetrically fixedly connected to the upper end of the side wall of the upper shell.

[0012] As a preferred solution of a 3D printing device based on digital light processing of the utility model, the self-locking component includes a self-locking shell, the self-locking shell is slidably connected to a bevel slider, the surface of the bevel slider is fixedly connected to a limit plate, and a pull column and a second spring are symmetrically fixedly provided at both ends of the limit plate, the second spring passes through the pull column, and the other end of the second spring is fixedly connected to the top surface of the self-locking shell, the other end of the pull column passes through the self-locking shell, and an oblique groove is opened in the middle of the sealing plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects: upper and lower shells are provided on the printer to seal it, so that toxic gases generated by printing cannot directly enter the air; a purification mechanism is provided on the top of the upper shell so that the generated toxic gases are adsorbed by the filter plate, thereby avoiding toxic gases from polluting the air and preventing harm caused by inhalation by the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive labor. Among them:

[0015] Figure 1 This is a schematic diagram of the overall structure of a 3D printing device based on digital light processing in the present invention;

[0016] Figure 2 This is a second overall structural diagram of a 3D printing device based on digital light processing according to the present invention;

[0017] Figure 3 This is a schematic diagram of the purification mechanism structure of a 3D printing device based on digital light processing in the present invention;

[0018] Figure 4This utility model is a 3D printing device based on digital light processing Figure 3 Schematic diagram of the structure of part A in FIG;

[0019] Figure 5 This is a third overall structural diagram of a 3D printing device based on digital light processing in the present invention;

[0020] Figure 6 This utility model is a 3D printing device based on digital light processing Figure 5 Schematic diagram of the structure of part B;

[0021] Figure 7 This is a schematic diagram of the filter plate structure of a 3D printing device based on digital light processing in the present invention.

[0022] In the figure: 1. Printer base; 2. Material trough; 3. Lifting mechanism; 4. Lower shell; 5. Upper shell; 501. Horizontal partition; 502. Vertical partition; 503. Fan bracket; 504. Mounting slot; 6. Air inlet; 7. Filter plate; 701. Sealing plate; 702. Inclined slot; 8. Motor; 9. Exhaust fan; 10. Air outlet; 11. First spring; 12. Self-locking shell; 13. Inclined slider; 14. Limiting plate; 15. Pull column; 16. Second spring; 17. Hinge; 18. Lock; 19. Lock hook. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0026] The utility model provides a 3D printing device based on digital light processing. Upper and lower shells are provided on the printer to seal it so that toxic gases generated by printing cannot directly enter the air. A purification mechanism is provided on the top of the upper shell 5 so that the generated toxic gases are adsorbed by the filter plate 7, thereby avoiding toxic gas pollution of the air and preventing harm caused by human inhalation.

[0027] Figure 1-Figure 7The figure shows the overall structure of an embodiment of a 3D printing device based on digital light processing of the present invention. Figure 1-Figure 7 The present embodiment is a 3D printing device based on digital light processing, including a printer base 1, a material trough 2 fixedly connected to the bottom of the printer base 1, a lifting mechanism 3 fixedly provided on one side of the top of the printer base 1, a lower shell 4 fixedly connected to the top edge of the printer base 1, and a lock buckle 18 fixedly provided on the two sides of the lower shell 4, two hinges 17 symmetrically fixedly connected to the top of the back of the lower shell 4, and an upper shell 5 fixedly provided on the other side of the hinge 17, and two lock hooks 19 fixedly provided on the two sides of the upper shell 5, respectively. The lock buckle 18 cooperates with the lock hook 19, and a purification mechanism fixedly connected to the top of the upper shell 5. After photosensitive resin is added to the material trough 2, it is layered and cured by the projection exposure module in the printer base 1. Each layer is pulled up by the lifting mechanism 3 until the layer printing is completed. During printing, the upper shell 5 is closed and the lock buckle 18 and the lock hook 19 are used to lock the lower shell 4 and the upper shell 5 to prevent accidental opening during printing and leakage of toxic gases. It also prevents dust in the outside air from falling into the photosensitive resin in the material trough during printing and affecting the printing effect.

[0028] The purification mechanism includes a transverse partition 501, on the surface of which an air inlet 6 and an air outlet 10 are provided, a vertical partition 502 is provided on the top surface of the transverse partition 501, an exhaust component is fixedly connected to the air outlet 10, and a filter adsorption component is fixedly connected to the top of the inner wall of the upper shell 5. The exhaust component sucks in the toxic gas in the shell through the air inlet 6, and then discharges it into the shell from the air outlet 10 after passing through the filter adsorption component.

[0029] The exhaust component includes a fan bracket 503, which is arranged above the air outlet 10. The top surface of the fan bracket 503 is fixedly connected to a motor 8, and the power output end of the motor 8 is fixedly connected to an exhaust fan 9. Starting the motor 8 drives the exhaust fan 9 to operate, so that the toxic gas in the shell is sucked in through the air inlet 6, and then discharged from the air outlet 10 into the shell after passing through the filtering and adsorption component.

[0030] The filtering and adsorption assembly includes a mounting groove 504, and two mounting grooves 504 are fixedly arranged at equal distances on the top surface of the side wall of the vertical partition 502. A filter plate 7 is slidably connected in the mounting groove 504, and a sealing plate 701 is fixedly connected to one end of the filter plate 7. The filter plate 7 is pushed into the top of the motor 8 along the mounting groove 504. The toxic gas passes through the two filter plates 7 along the airflow generated by the exhaust fan 9 and is filtered and adsorbed, and the non-toxic air is discharged from the air outlet 10.

[0031] Combine Figures 1-6, a 3D printing device based on digital light processing in this embodiment has the following specific usage process: after adding photosensitive resin into the material trough 2, it is cured in layers through the projection exposure module in the printer base 1. Each layer is pulled up by the lifting mechanism 3 until the layer printing is completed. During printing, the upper shell 5 is closed and the lock buckle 18 and the lock hook 19 are used to lock the lower shell 4 and the upper shell 5 to prevent accidental opening during printing and causing leakage of toxic gas. It can also prevent dust in the outside air from falling into the photosensitive resin in the material trough during printing and affecting the printing effect. The motor 8 is started to drive the exhaust fan 9 to operate, so that the toxic gas in the shell is sucked in through the air inlet 6. The toxic gas passes through the two filter plates 7 along the airflow generated by the exhaust fan 9 and is filtered and adsorbed. The non-toxic air is discharged from the air outlet 10, avoiding toxic gas pollution of the air and preventing harm to the human body after inhalation.

[0032] In this embodiment, after a long period of adsorption of toxic gases by the filter plate 7 in the purification mechanism, its filtration and adsorption efficiency will be reduced. At this time, it is necessary to replace the filter plate 7 with a new one to ensure the purification efficiency. For this purpose, please refer to Figure 1-Figure 7 In this embodiment, three first springs 11 are equidistantly fixedly connected to the bottom of the mounting groove 504, and two self-locking components are symmetrically fixedly connected to the upper end of the side wall of the upper shell 5. The self-locking component includes a self-locking shell 12, and the self-locking shell 12 is slidably connected to the inclined slider 13. The surface of the inclined slider 13 is fixedly connected to the limit plate 14. The two ends of the limit plate 14 are symmetrically fixed with a pull column 15 and a second spring 16. The second spring 16 passes through the pull column 15, and the other end of the second spring 16 is fixedly connected to the top surface of the self-locking shell 12. The other end of the pull column 15 passes through the self-locking shell 12. An oblique groove 702 is provided in the middle of the sealing plate 701. The oblique groove 702 on the sealing plate 701 is facing the inclined surface of the inclined slider 13 to push the filter plate 7 along the mounting groove 504. When the inclined surface of the oblique groove 702 contacts the inclined surface of the inclined slider 13, it continues to push The filter plate 7 is inserted into the filter plate 7 so that the inclined slide block 13 is pushed into the self-locking shell 12 along the inclined surface. At this time, the second spring 16 is contracted. After the inclined groove 702 passes through the inclined slide block 13, the second spring 16 rebounds to make the inclined slide block 13 extend out of the self-locking shell 12. When the filter plate 7 is pushed in along the installation groove 504, one end of the filter plate 7 contacts the first spring 11 and compresses the first spring 11. When the filter plate 7 is installed in place, the straight surface of the inclined slide block 13 contacts the straight surface of the sealing plate 701, so that the filter plate 7 cannot be pulled out, and the first spring 11 also remains in a compressed state. When the filter plate 7 needs to be replaced, the pull column 15 is pulled to contract the second spring 16 and drive the inclined slide block 13 into the self-locking shell 12. At this time, the first spring 11 rebounds to make the filter plate 7 pop out, and the filter plate 7 can be pulled out, making the filter plate 7 easy to install and the operation convenient when replacing.

[0033] While the present invention has been described above with reference to specific embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as no structural conflicts exist, the various features of the embodiments disclosed herein may be combined with one another in any manner, and the omission of an exhaustive description of these combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A 3D printing device based on digital light processing, characterized in that: The printer base (1) comprises a printer base (1), the bottom of which is fixedly connected to a material trough (2), a lifting mechanism (3) is fixedly provided on one side of the top of the printer base (1), a lower shell (4) is fixedly provided on the top edge of the printer base (1), a lock buckle (18) is fixedly provided on two side surfaces of the lower shell (4), two hinges (17) are symmetrically fixedly provided on the top of the back of the lower shell (4), the other side of the hinge (17) is fixedly connected to an upper shell (5), two lock hooks (19) are fixedly provided on two side surfaces of the upper shell (5), the lock buckle (18) cooperates with the lock hook (19), and a purification mechanism is fixedly provided on the top of the upper shell (5).

2. A 3D printing device based on digital light processing according to claim 1, characterized in that: The purification mechanism comprises a transverse partition (501), an air inlet (6) and an air outlet (10) are provided on the surface of the transverse partition (501), a vertical partition (502) is provided on the top surface of the transverse partition (501), an exhaust component is fixedly connected to the air outlet (10), and a filter adsorption component is fixedly connected to the top of the inner wall of the upper shell (5).

3. The 3D printing device based on digital light processing according to claim 2, characterized in that: The exhaust assembly comprises a fan bracket (503), the fan bracket (503) is arranged above the air outlet (10), the top surface of the fan bracket (503) is fixedly connected to a motor (8), and the power output end of the motor (8) is fixedly connected to an exhaust fan (9).

4. The 3D printing device based on digital light processing according to claim 3, characterized in that: The filter adsorption assembly comprises a mounting groove (504), wherein two mounting grooves (504) are fixedly arranged at equal distances on the top surface of the side wall of the vertical partition (502), a filter plate (7) is slidably connected in the mounting groove (504), and a sealing plate (701) is fixedly connected to one end of the filter plate (7).

5. The 3D printing device based on digital light processing according to claim 4, characterized in that: Three first springs (11) are fixedly connected at equal intervals to the bottom of the installation slot (504), and two self-locking components are symmetrically fixedly connected to the upper end of the side wall of the upper shell (5).

6. The 3D printing device based on digital light processing according to claim 5, characterized in that: The self-locking component includes a self-locking shell (12), the self-locking shell (12) is slidably connected to a bevel slider (13), the surface of the bevel slider (13) is fixedly connected to a limit plate (14), and the two ends of the limit plate (14) are symmetrically fixed with a pull column (15) and a second spring (16), the second spring (16) passes through the pull column (15), and the other end of the second spring (16) is fixedly connected to the top surface of the self-locking shell (12), and the other end of the pull column (15) passes through the self-locking shell (12), and an inclined groove (702) is provided in the middle of the sealing plate (701).

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