3D printing equipment

Abstract

The utility model discloses a 3D printing device, the 3D printing device comprises a forming platform, a laser assembly and a correction assembly, the surface of the forming platform comprises a forming area, the laser assembly is arranged above the forming platform, the correction assembly comprises a camera, a standard plate and a calibration plate, the camera is arranged above the forming area, the standard plate is arranged above the forming area, and the calibration plate is arranged above the forming area. The standard plate and the calibration plate are detachably installed in the forming area. According to the utility model, the correction assembly is integrated into the 3D printing equipment, so that the correction of the laser assembly in the 3D printing equipment is completed, and other equipment is not needed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to 3D printing technical field, specifically about a kind of 3D printing equipment. BACKGROUND

[0002] 3D printing technology is a kind of additive manufacturing technology, which can realize the rapid prototyping of object. With the development of science and technology, 3D printing technology has realized the manufacturing and processing mode of manufacturing entity based on computer three-dimensional model data by layering material. 3D printing technology has high processing precision and can process complex structure, and is a revolutionary new manufacturing technology.

[0003] 3D printing equipment is to use laser beam to process material, which needs to use laser galvanometer to output laser beam. Laser galvanometer is a high-precision, high-speed servo control system composed of a drive board and a high-speed swing motor. The electrical parameter change of laser galvanometer and the mechanical deformation of equipment will affect the forming quality of 3D printing. With the development of science and technology, currently there are 3D printing equipment using multiple laser galvanometers for printing. In the printing process, multiple laser galvanometers are used to print on the forming platform synchronously. Before printing, the printing area of each laser galvanometer is usually set in advance, so that multiple laser galvanometers can complete the printing together. Therefore, in order to ensure the forming quality of 3D printing, the laser galvanometer needs to be corrected.

[0004] The 3D printing equipment in the prior art usually makes feature points inside the 3D printing equipment first, and then transfers the feature points to the image instrument for measurement after the feature points are made, and calibrates the laser galvanometer according to the deviation value. This method is complicated to operate and has high equipment cost.

[0005] Therefore, in view of the above technical problems, it is necessary to provide a kind of 3D printing equipment. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a kind of 3D printing equipment, which can complete the correction of multiple mirrors inside the 3D printing equipment without the aid of other equipment.

[0007] In order to achieve the above-mentioned purpose, the technical scheme provided by an embodiment of the utility model is as follows:

[0008] A kind of 3D printing equipment, the 3D printing equipment includes forming platform, laser assembly and correction component, the forming platform surface includes forming area, the laser assembly is located above forming platform, the correction component includes camera, standard plate and calibration plate, the camera is located above forming area, the standard plate and calibration plate are respectively detachably installed in forming area.

[0009] In one embodiment, the standard plate has a standard pattern for calibration, the standard pattern is a dot matrix, and the calibration plate is provided with engraving paper.

[0010] In one embodiment, the 3D printing device further includes a lighting assembly, which is detachably disposed around the molding area.

[0011] In one embodiment, the lighting assembly includes a lampshade, a light bar and an adjustable footstand. The light bar is rotatably installed in the lampshade along its length, and the lampshade is fixedly installed between two adjacent adjustable footstands.

[0012] In one embodiment, several lampshades are provided between two adjacent adjustable legs, and the lampshades include a cover plate, a back plate, a left plate and a right plate. The cover plate is connected to the back plate, the left plate is respectively connected to the cover plate and the back plate, and the right plate is respectively connected to the cover plate and the back plate. The left plate and the right plate are respectively fixedly mounted on two adjacent adjustable legs.

[0013] In one embodiment, adjustment slots are provided on the left and right panels of the lampshade, and a positioning portion is provided on the upper end of the light bar, and the positioning portion is movably installed in the adjustment slots.

[0014] In one embodiment, the adjustment groove is arc-shaped.

[0015] In one embodiment, the laser assembly includes a laser generator and a laser galvanometer, and the laser galvanometer is arranged at the output end of the laser generator.

[0016] In one embodiment, the 3D printing device includes multiple laser components.

[0017] In one embodiment, the 3D printing device includes:

[0018] In the first state, the lighting components are arranged around the molding area, and the standard plate is arranged in the molding area;

[0019] In the second state, the lighting assembly is arranged around the molding area, and the calibration plate is arranged in the molding area;

[0020] In the third state, there are no lighting components around the molding area, and no standard plates and calibration plates in the molding area.

[0021] Compared with the existing technology, the 3D printing device of the present invention has the following beneficial effects:

[0022] The utility model integrates the correction component of the laser galvanometer into the 3D printing device, and adopts the image measurement method to realize the correction of multiple laser galvanometers inside the 3D printing device without the need for other equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the 3D printing device in Example 1 of the present utility model;

[0025] Figure 2 This is a top view of the 3D printing device in Example 1 of the present utility model;

[0026] Figure 3 This is a schematic diagram of the standard plate in Example 1 of the present utility model;

[0027] Figure 4 This is a cross-sectional view of the lighting assembly in Example 1 of the present invention.

[0028] Description of main reference numerals:

[0029] 1-forming platform, 11-forming area, 21-laser galvanometer, 22-laser generator, 31-camera, 311-lens, 32-standard plate, 41-lamp cover, 411-adjustment slot, 42-light bar, 43-adjustment tripod. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0031] In the description of the embodiments of the present application, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0032] In the description of the embodiments of this application, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0033] Example 1:

[0034] Ginseng Figure 1 Combined with Figure 2 As shown, the 3D printing device in this embodiment includes a forming platform 1, a laser assembly and a correction assembly. The surface of the forming platform 1 includes a forming area 11. The laser assembly is arranged above the forming platform 1. The correction assembly includes a camera 31, a standard plate 32 and a calibration plate (not shown). The camera 31 is arranged above the forming area 11, and the standard plate 32 and the calibration plate are respectively detachably installed in the forming area 11.

[0035] The laser assembly in this embodiment includes a laser generator 22 and a laser galvanometer 21. The laser galvanometer 21 is located at the output end of the laser generator 22. A 3D printing device can include multiple laser assemblies. The 3D printing device in this embodiment includes four laser assemblies. These four laser assemblies are located on both sides of the camera 31 to prevent them from obstructing the camera 31.

[0036] The camera 31 in this embodiment is further equipped with a lens 311 , through which focus adjustment can be performed.

[0037] Ginseng Figure 3 As shown, the standard plate 32 in this embodiment has a standard pattern for calibration, and the standard pattern is preferably a dot matrix.

[0038] The calibration plate in this embodiment is the same size as the standard plate 32 and is smaller than or equal to the size of the forming area 11. The calibration plate is provided with engraving paper (not shown), which the laser galvanometer 21 can mark. The engraving paper is attached to the calibration plate for easy replacement, allowing for marking of multiple laser galvanometers.

[0039] Ginseng Figure 1 Combined with Figure 3 As shown, the 3D printing device in this embodiment further includes a lighting assembly, which is detachably arranged around the molding area 11 so as to provide fill light when the laser galvanometer 21 is calibrated.

[0040] Combine Figure 4As shown, the lighting assembly in the embodiment includes lamp covers 41, lamp strips 42, and adjusting legs 43. The lamp strips 42 are rotatably installed in the lamp covers 41 along the length direction, and the lamp covers 41 are fixedly installed between the adjacent adjusting legs 43. Specifically, a plurality of lamp covers 41 can be arranged between the adjacent adjusting legs 43. The lamp cover 41 includes a cover plate, a back plate, a left side plate, and a right side plate. The cover plate is connected with the back plate. The left side plate is connected with the cover plate and the back plate respectively. The right side plate is connected with the cover plate and the back plate respectively. That is, the lamp cover 41 forms a cavity for the rotation of the lamp strip 42. The left side plate and the right side plate of the lamp cover 41 are fixedly installed on the adjacent adjusting legs 43.

[0041] Exemplarily, the lighting assembly in the embodiment includes four adjusting legs 43, which form a square with the lamp covers 41 and are arranged around the forming area 11. Two lamp covers 41 are arranged in a stacked manner between the adjacent adjusting legs 43. Each lamp cover 41 is provided with a rotatable lamp strip 42. The cavity in the lamp cover 41 exposes the lamp strip 42, so that the light emitting surface of the lamp strip 42 faces the forming area 11, thereby achieving the effect of light compensation.

[0042] The left side plate and the right side plate of the lamp cover 41 in the embodiment are provided with adjusting grooves 411. The upper end of the lamp strip 42 is provided with a positioning part, which is movably installed in the adjusting groove 411. Exemplarily, the adjusting groove 411 in the embodiment is in the shape of a circular arc.

[0043] The 3D printing device in the embodiment includes:

[0044] In the first state, the lighting assembly is arranged around the forming area 11, and the standard plate 32 is arranged in the forming area 11.

[0045] In the second state, the lighting assembly is arranged around the forming area 11, and the standard plate is arranged in the forming area 11.

[0046] In the third state, there is no lighting assembly around the forming area 11, and there is no standard plate 32 and the standard plate in the forming area 11.

[0047] The 3D printing device performs the correction of the multi-laser galvanometer 21 in the first state and the second state, and performs the printing work in the third state.

[0048] Specifically, the correction method of the multi-laser galvanometer in the 3D printing device in the embodiment is as follows:

[0049] 1. Set up lighting components around the molding area 11 to provide fill light. Place a standard plate 32 in the molding area 11. Move the molding platform 1, moving the standard plate 32 with it. Observe its position in the camera 31 image, ensuring it is centered and all dots on the standard plate 32 are within the field of view. Adjust the focal length of the camera 31 using the lens 311 to maximize the clarity of the dot matrix on the standard plate 32. Then, use the camera 31 to capture an image of the standard plate 32, identify all shapes within it, and calculate the pixel coordinates of the center points of all shapes.

[0050] 2. Remove the standard plate 32 and place the calibration plate with the engraving paper attached to it in the forming area 11. Use the laser galvanometer 21 to mark a dot matrix on the engraving paper. After marking, take a photo of the engraving paper with the dot matrix to identify the dots on the engraving paper. Then, replace the engraving paper and repeat the marking and photographing steps until all laser galvanometers 21 have completed the marking process.

[0051] 3. Identify the pixel coordinates of the feature points marked by the laser galvanometer 21 and compare them with the standard plate 32. Establish a global coordinate system and coordinate circle for the multiple laser galvanometers 21, and obtain the coordinates of the feature points of the multiple laser galvanometers 21 in the global coordinate system. Next, obtain the center offset coordinates and local correction data of each laser galvanometer 21 through coordinate translation. By fitting the local correction data of each laser galvanometer 21 with the corresponding control position, a position correction table for each laser galvanometer 21 is generated.

[0052] After completing the calibration of the multi-laser galvanometer 21, the global data during printing is divided into regions according to the arrangement of the multi-laser galvanometer 21. According to the position correction table of each laser galvanometer 21, the global data is converted into local data of the laser galvanometer 21, that is, printing data, to complete the printing of each laser galvanometer 21.

[0053] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0054] The utility model integrates the correction component of the laser galvanometer into the 3D printing device, and adopts the image measurement method to realize the correction of multiple laser galvanometers inside the 3D printing device without the need for other equipment.

[0055] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0056] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A 3D printing device, characterized in that: The 3D printing device includes a forming platform, a laser assembly and a correction assembly. The surface of the forming platform includes a forming area. The laser assembly is arranged above the forming platform. The correction assembly includes a camera, a standard plate and a calibration plate. The camera is arranged above the forming area. The standard plate and calibration plate are respectively detachably installed in the forming area.

2. The 3D printing device according to claim 1, characterized in that The standard plate is provided with a standard pattern for calibration, the standard pattern being a dot matrix, and the calibration plate is provided with engraving paper.

3. The 3D printing device according to claim 1, characterized in that The 3D printing device further includes a lighting assembly, which is detachably arranged around the molding area.

4. The 3D printing device according to claim 3, characterized in that: The lighting assembly includes a lampshade, a light bar and an adjustable footstand. The light bar is rotatably installed in the lampshade along its length direction, and the lampshade is fixedly installed between two adjacent adjustable footstands.

5. The 3D printing device according to claim 4, characterized in that: Several lampshades are provided between two adjacent adjustable legs, and the lampshades include a cover plate, a back plate, a left plate and a right plate. The cover plate is connected to the back plate, the left plate is respectively connected to the cover plate and the back plate, and the right plate is respectively connected to the cover plate and the back plate. The left plate and the right plate are respectively fixedly mounted on the two adjacent adjustable legs.

6. The 3D printing device according to claim 4, characterized in that: The left side plate and the right side plate of the lampshade are provided with adjustment slots, the upper end of the light bar is provided with a positioning part, and the positioning part is movably installed in the adjustment slots.

7. The 3D printing device according to claim 6, characterized in that: The adjusting groove is in an arc shape.

8. The 3D printing device according to claim 1, characterized in that: The laser assembly includes a laser generator and a laser galvanometer, and the laser galvanometer is arranged at the output end of the laser generator.

9. The 3D printing device according to claim 1, characterized in that: The 3D printing device includes multiple laser components.

10. The 3D printing device according to claim 1, characterized in that: The 3D printing device includes: In the first state, the lighting components are arranged around the molding area, and the standard plate is arranged in the molding area; In the second state, the lighting assembly is arranged around the molding area, and the calibration plate is arranged in the molding area; In the third state, there are no lighting components around the molding area, and no standard plates and calibration plates in the molding area.

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