3D printing equipment

Abstract

This utility model discloses a 3D printing device, including a base, a receiving groove, a printing platform, a scraper module, and a light source module. The 3D printing device is configured to perform at least the following cyclic actions: the printing platform descends a first predetermined distance; after the printing platform descends, the scraper module moves from a first position to a second position to perform a first leveling operation; after the scraper module performs the first leveling operation, the light source module moves from a third position to a fourth position to perform a first curing operation; after the light source module performs the first curing operation, the printing platform descends a second predetermined distance; after the printing platform descends, the scraper module moves from a second position to a first position to perform a second leveling operation; after the scraper module performs the second leveling operation, the light source module moves from a fourth position to a third position to perform a second curing operation, thereby helping to improve the overall efficiency of the printing device.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a 3D printing device. Background Technology

[0002] 3D printing technology, as an additive manufacturing process, is widely used in the manufacturing industry. There are several technical approaches to 3D printing. One approach involves using a light source to cure photosensitive resin layer by layer to form a workpiece. The light source can be moved to accommodate large-sized workpieces. However, before the light source can expose the resin, a scraper needs to be moved to smooth it. In these technologies, the repositioning of both the light source and the scraper takes time, affecting printing efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a 3D printing device that can improve printing efficiency.

[0004] The 3D printing apparatus according to a first aspect of the present invention includes:

[0005] Base;

[0006] A receiving groove, connected to the base, defines a cavity for receiving resin;

[0007] A printing platform is connected to the base and located within the cavity; the printing platform is capable of moving up and down within the cavity.

[0008] A scraper module, connected to the base and movable relative to the printing platform, is used to scrape the resin flat;

[0009] A light source module, connected to the base and movable relative to the printing platform, is used to cure the resin that is scraped flat on the upper side of the printing platform;

[0010] The 3D printing equipment is configured to perform at least the following cyclic actions: the printing platform descends a first predetermined distance; the scraper module moves from a first position to a second position after the printing platform descends to perform a first leveling operation; the light source module moves from a third position to a fourth position after the scraper module performs the first leveling operation to perform a first curing operation; the printing platform descends a second predetermined distance after the light source module performs the first curing operation; the scraper module moves from the second position to the first position after the printing platform descends to perform a second leveling operation; and the light source module moves from the fourth position to the third position after the scraper module performs the second leveling operation to perform a second curing operation.

[0011] The 3D printing equipment according to the embodiments of the present invention has at least the following beneficial effects:

[0012] This embodiment enables the reset strokes of the scraper module 400 and the light source module 500 to be used for the scraping operation and the curing operation, respectively, which helps to improve the overall efficiency of the printing equipment.

[0013] In other embodiments of the present invention, the scraper module is configured to move along a first horizontal direction between the first position and the second position, and the light source module is configured to move along a second horizontal direction between the third position and the fourth position, wherein the first horizontal direction is perpendicular to the second horizontal direction.

[0014] In other embodiments of the present invention, the 3D printing device further includes a first driving module for driving the scraper module to move, and a second driving module for driving the light source module to move;

[0015] The first drive module includes a first power component and a first guide component. The first power component is connected to the scraper module. The first guide component is disposed on opposite sides of the receiving groove along the first horizontal direction and extends along the first horizontal direction. The scraper module is slidably connected to the base through each of the first guide components and can be driven by the first power component to move along the first horizontal direction.

[0016] The second driving module includes a second power component and a second guide component. The second power component is connected to the light source module. The second guide component is disposed on opposite sides of the receiving groove along the second horizontal direction and extends along the second horizontal direction. The light source module is slidably connected to the base through each of the second guide components and can be driven by the second power component to move along the second horizontal direction.

[0017] In other embodiments of this utility model, the 3D printing equipment further includes a first support frame connected to the base, and a second guide component connected to the first support frame such that the second guide component is higher than the first guide component, and the light source module is higher than the scraper module.

[0018] In other embodiments of the present invention, the 3D printing equipment further includes a first support frame, the first support frame including at least two first support columns and a first crossbeam connected to each of the first support columns, the first support columns being connected to the base and extending in a vertical direction, and an installation space being defined between the first support columns and the first crossbeam;

[0019] The 3D printing equipment also includes a second drive module, which is connected to the first crossbeam and to the light source module, for driving the light source module to move along the second horizontal direction;

[0020] The 3D printing equipment also includes a third drive module, which is connected to the base and at least partially located within the installation space. The third drive module is connected to the printing platform and is used to drive the printing platform to move up and down.

[0021] In other embodiments of this utility model, the 3D printing equipment further includes a second support frame and a third drive module. The third drive module includes a third power component and a third guide component. The third guide component is disposed on opposite sides of the receiving groove along the second horizontal direction. The second support frame extends along the first horizontal direction and its two ends are respectively connected to the third guide components on both sides. The second support frame is connected to the printing platform and can be driven by the third power component to raise and lower the printing platform.

[0022] The printing platform has a pick-up position for picking up parts, which is higher than the printing position of the printing platform when the light source module performs the curing operation;

[0023] The 3D printing equipment further includes a fourth drive module, which includes a fourth power component connected to the scraper module and configured to drive the scraper module to rise before the printing platform moves upward to the part-removal position, or to drive the scraper module to rise synchronously during the process of the printing platform moving upward to the part-removal position.

[0024] In other embodiments of the present invention, the fourth drive module includes two fourth power components, which are connected to both ends of the scraper module and configured to synchronously drive the scraper module to rise.

[0025] In other embodiments of this utility model, the printing platform has a pick-up position for picking up parts, and the pick-up position is higher than the printing position of the printing platform when the light source module performs the curing operation;

[0026] The 3D printing equipment also includes a fifth drive module, which includes a fifth power component connected to the light source module. The fifth power component is configured to drive the light source module to rise before the printing platform moves upward to the part-retrieving position, or to drive the light source module to rise and fall synchronously during the process of the printing platform moving upward to the part-retrieving position.

[0027] In other embodiments of the present invention, the scraper module is configured to move between the first position and the second position along a first horizontal direction. The scraper module includes a scraper and a vibrator. The scraper is connected to the vibrator and can be driven by the vibrator to vibrate along a second horizontal direction. The first horizontal direction is perpendicular to the second horizontal direction.

[0028] In other embodiments of the present invention, the light source module includes a plurality of light sources distributed along a first horizontal direction, and the light source module is configured to move between the third position and the fourth position along a second horizontal direction, wherein the first horizontal direction is perpendicular to the second horizontal direction.

[0029] In other embodiments of this utility model, the light source module is configured to switch to a working state after moving from the third position in a stopped state for a first set time or a third set distance, so as to perform the first curing operation; or, the 3D printing equipment further includes a detection device for detecting the speed of the light source module, wherein the light source module is configured to move from the third position in a stopped state until the speed of the light source module increases to a set range, at which point it switches to a working state to perform the first curing operation;

[0030] And / or, the light source module is configured to switch from a working state to a stopped state after completing the first curing operation, and move in the stopped state for a second set time or a fourth set distance to reach the fourth position; or, the 3D printing equipment further includes a detection device for detecting the speed of the light source module, the light source module being configured to switch to a stopped state when the speed is lower than a set range, and move in the stopped state to the fourth position.

[0031] The 3D printing apparatus according to a second aspect embodiment of the present invention includes:

[0032] Base;

[0033] A receiving groove, connected to the base, defines a cavity for receiving resin;

[0034] A printing platform is connected to the base and located within the cavity; the printing platform is capable of moving up and down within the cavity.

[0035] A scraper module, connected to the base and movable relative to the printing platform, is used to scrape the resin flat;

[0036] A light source module, connected to the base, is used to cure the resin that is scraped flat on the upper side of the printing platform;

[0037] The 3D printing equipment is configured to perform at least the following cyclic actions: the printing platform descends a first predetermined distance; the scraper module moves from a first position to a second position after the printing platform descends to perform a first leveling operation; the light source module performs a first curing operation after the scraper module performs the first leveling operation; the printing platform descends a second predetermined distance after the light source module performs the first curing operation; the scraper module moves from the second position to the first position after the printing platform descends to perform a second leveling operation; and the light source module performs a second curing operation after the scraper module performs the second leveling operation.

[0038] The 3D printing apparatus according to a third aspect embodiment of the present invention includes:

[0039] Base;

[0040] A receiving groove, connected to the base, defines a cavity for receiving resin;

[0041] A printing platform is connected to the base and located within the cavity; the printing platform is capable of moving up and down within the cavity.

[0042] A scraper module, connected to the base and movable relative to the printing platform, is used to scrape the resin flat;

[0043] A light source module, connected to the base and movable relative to the printing platform, is used to cure the resin that is scraped flat on the upper side of the printing platform;

[0044] The 3D printing equipment is configured to perform at least the following cyclic actions: the printing platform descends a first predetermined distance; the scraper module moves from a first position to a second position to perform a first leveling operation after the printing platform descends, and then moves from the second position to the first position; the light source module moves from a third position to a fourth position to perform a first curing operation after the scraper module moves to the first position; the printing platform descends a second predetermined distance after the light source module performs the first curing operation; the scraper module moves from a first position to a second position to perform a second leveling operation after the printing platform descends, and then moves from the second position to the first position; the light source module moves from the fourth position to the third position to perform a second curing operation after the scraper module moves to the first position.

[0045] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0046] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0047] Figure 1 This is a three-dimensional schematic diagram of the 3D printing equipment in one direction according to an embodiment of the present invention;

[0048] Figure 2 for Figure 1 A three-dimensional diagram of a 3D printing equipment from another direction.

[0049] Figure 3 for Figure 1 A three-dimensional schematic diagram of the scraper module and the corresponding first and fourth drive modules of the 3D printing equipment.

[0050] Figure 4 for Figure 1 A three-dimensional schematic diagram of the light source module and the corresponding second and fifth drive modules of the 3D printing equipment.

[0051] Figure 5 for Figure 1 A three-dimensional schematic diagram of the printing platform and corresponding third drive module of a 3D printing equipment;

[0052] Figure 6 for Figure 5 Top view.

[0053] Figure label:

[0054] 3D printing equipment 10;

[0055] Base 100;

[0056] Receiving groove 200, cavity 201;

[0057] Printing platform 300;

[0058] Scraper module 400;

[0059] Light source module 500, light source 510;

[0060] First drive module 600, first power component 610, first guide component 620;

[0061] Second drive module 700, second power assembly 710, second guide assembly 720;

[0062] Third drive module 800, third power component 810, third guide component 820;

[0063] Fourth drive module 900, fourth power component 910;

[0064] Fifth drive module 1000, fifth power component 1010;

[0065] First support frame 1100, first support column 1110, first crossbeam 1120, installation space 1101

[0066] Second support frame 1200, second support column 1210, second crossbeam 1220. Detailed Implementation

[0067] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0068] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0069] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0070] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0071] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] To facilitate understanding, we will first take DLP printing (Digital Light Processing) as an example to illustrate the working principle of 3D printing equipment based on photosensitive resin. Photosensitive resin is a resin that is initially liquid and can be cured under specific light. During printing, the printing platform used to support the workpiece is immersed to a certain depth below the surface of the liquid resin, and the surface of the liquid resin is leveled by a scraper. Then, the resin in the target area on the printing platform is cured by a light source to obtain a structural layer. Then, the printing platform is lowered again so that the obtained structural layer is immersed to the same depth below the surface of the liquid resin. After leveling the resin, it is cured by a light source to form a new structural layer on the existing structural layer. Repeating the above actions completes the 3D printing. For example, a typical printing process is as follows: After the printing platform is immersed in the resin, the scraper moves from the starting position to the ending position to smooth the resin, and then returns to the starting position from the ending position. After the scraper returns to the starting position, the light source moves from the starting position to the ending position, curing the resin during the movement, and then returns to the starting position from the ending position. After the light source returns to the starting position, the printing platform descends. The resetting of both the light source and the scraper takes time, affecting the overall printing efficiency. Based on the above, this utility model embodiment proposes a 3D printing device 10 that can improve printing efficiency. The following description is in conjunction with the accompanying drawings and specific embodiments.

[0073] It should be noted that the 3D printing equipment of this invention can be applied to manufacturing and industrial fields, medical and technological fields, etc. Specifically, for example, the 3D printing equipment of this invention can be used to print samples required in the research and development of storage modules and mobile storage, as well as to manufacture device samples integrating storage modules and mobile storage functions, etc. This is only an example and does not represent all application scenarios.

[0074] Reference Figure 1 , Figure 2 The 3D printing equipment 10 in the first embodiment of this utility model includes a base 100, a receiving groove 200, a printing platform 300, a scraper module 400, and a light source module 500. The base 100 serves as a supporting structure, used to directly or indirectly connect the aforementioned receiving groove 200, printing platform 300, scraper module 400, and light source module 500. The receiving groove 200 is used to receive resin. The printing platform 300 is used to support the intermediate structural layer during the molding process and to support the workpiece after printing. The scraper module 400 is used to scrape the resin parallel to its surface. The light source module 500 is used to cure the resin. In addition, the 3D printing equipment may also include a drive module for driving the movement of the corresponding modules.

[0075] For example, the base 100 includes a ring-shaped worktable and a support frame disposed under the worktable for support, the table surface of which is used to connect other modules. The receiving slot 200 is located within the space defined by the worktable and has a cavity 201 for receiving resin. The upper side of the cavity 201 has an opening to facilitate the downward projection of curing light by a light source and to facilitate the removal of the workpiece from the printing platform 300.

[0076] The printing platform 300 is connected to the base 100 and located within the cavity 201, and can rise and fall within the cavity 201. Specifically, during the printing process, the printing platform 300 can gradually descend to maintain a certain depth of liquid resin on the upper side of the printed structural layer, facilitating subsequent curing operations. After printing is completed, the printing platform 300 can rise again to detach the workpiece from the resin. For example, the printing platform 300 is constructed as a rectangular platform adapted to the shape of the cavity 201.

[0077] The scraper module 400 is connected to the base 100 and can move relative to the printing platform 300. During movement, it scrapes the resin to improve the smoothness of the resin surface and break the surface tension of the resin, thereby ensuring the subsequent curing effect. It should be noted that the height of the scraper module 400 can be set according to the height of the resin surface in the cavity 201.

[0078] The light source module 500 is used to cure the resin that has been scraped and leveled on the printing platform 300 to obtain a structural layer. Exemplarily, the light source module 500 is a DLP light source suitable for DLP processes, capable of emitting ultraviolet light of a specific wavelength to cure the photosensitive resin. Furthermore, the light source module 500 can project a digital image converted from model data onto the resin surface in a full-layer projection, thereby simultaneously curing the resin within a region. In addition, the light source module 500 in this embodiment can also move relative to the printing platform 300, thereby curing resin over a larger area, thus adapting to the printing of large-sized workpieces.

[0079] In this embodiment, the scraping operation can also be performed during the reset process of the scraper module 400, and the curing operation can also be performed during the reset process of the light source module 500, thereby making full use of the reset stroke of both modules and helping to improve printing efficiency. Specifically, the 3D printing device 10 is configured to perform at least the following cyclic actions:

[0080] 1. The printing platform descends 300 degrees to the first set distance;

[0081] 2. After the printing platform 300 descends, the scraper module 400 moves from the first position to the second position to perform the first scraping operation;

[0082] 3. After the scraper module 400 performs the first leveling operation, the light source module 500 moves from the third position to the fourth position to perform the first curing operation;

[0083] 4. After the light source module 500 performs the first curing operation, the printing platform 300 descends by a second predetermined distance;

[0084] 5. After the printing platform 300 descends, the scraper module 400 moves from the second position to the first position to perform the second scraping operation;

[0085] 6. After the scraper module 400 performs the second leveling operation, the light source module 500 moves from the fourth position to the third position to perform the second curing operation.

[0086] It should be noted that in the above process, the first set distance and the second set distance can be equal.

[0087] It should also be noted that, in addition to the above-mentioned combination of cyclic actions, the 3D printing equipment 10 can also perform other combinations of actions. For example, after the light source module 500 performs the first curing operation, the workpiece has been printed. Then, the scraper module 400 and the light source module 500 only need to be reset and moved. The light source module 500 can be in a stopped state. At this time, these steps can be called reset actions that are different from cyclic actions.

[0088] Based on the above, this embodiment adjusts the action sequence of the printing platform 300, the scraper module 400, and the light source module 500 so that the scraper module 400 and the light source module 500 operate alternately. This allows the reset strokes of the two modules to be used for the scraping operation and the curing operation, respectively, which helps to improve the overall efficiency of the printing equipment.

[0089] Based on the first embodiment, in some embodiments of this utility model, reference is made to Figure 1 , 2 The scraper module 400 is configured to move between a first position and a second position along a first horizontal direction, and the light source module 500 is configured to move between a third position and a fourth position along a second horizontal direction. The first horizontal direction is perpendicular to the second horizontal direction. For example, the first horizontal direction is... Figure 1 The left and right directions, the second horizontal direction is Figure 1 The front-to-back direction in the middle. In this embodiment, by setting the moving directions of the scraper module 400 and the light source module 500 to be perpendicular to each other, the corresponding drive modules can be arranged more flexibly, making full use of the table space of the base 100.

[0090] When the scraper module 400 and the light source module 500 move along the first horizontal direction and the second horizontal direction respectively, in some embodiments of this utility model, referring to Figure 1 , 2The 3D printing equipment 10 also includes a first drive module 600 and a second drive module 700. The first drive module 600 is used to drive the scraper module 400 to move, and the second drive module 700 is used to drive the light source module 500 to move.

[0091] Specifically, refer to Figure 3 The first drive module 600 includes a first power component 610 and a first guide component 620. The scraper module 400 is connected to the first power component 610 and can be driven by the first power component 610 to move along a first horizontal direction. For example, the first power component 610 can be a motor-screw based power component, specifically including a motor, a screw, and a screw seat. The drive shaft of the motor is connected to the screw, the screw is rotatably connected to the base 100 and extends along the moving direction, the screw seat is threaded to the screw, and the scraper module 400 is connected to the screw seat. When the screw rotates, the screw seat drives the scraper module 400 to move along the first horizontal direction. In some other specific embodiments, the first power component 610 can be a motor-synchronous belt based power component, specifically including a motor, a synchronous belt and synchronous pulleys. The synchronous belt is wound around at least two synchronous pulleys and connected to the scraper module 400. The drive shaft of the motor is connected to one of the synchronous pulleys. The rotation of the synchronous pulley can drive the scraper module 400 to move along the first horizontal direction via the synchronous belt. The first power component 610 can also be a linear motor power component, specifically including a stator arranged along the direction of movement and a mover that can slide relative to the stator. The mover is connected to the scraper module 400 and can drive the scraper module 400 to move along the first horizontal direction under magnetic drive. The first power component 610 can also be a power component with a telescopic shaft, such as an electric cylinder, through which the scraper module 400 moves along the first horizontal direction via the telescopic drive rod of the telescopic shaft.

[0092] The first guide component 620 is used to guide the movement of the scraper module 400. For example, the first guide component 620 is a slide rail mechanism or a guide mechanism. In this embodiment, the first guide component 620 extends along a first horizontal direction and is disposed on opposite sides of the receiving groove 200 along the first horizontal direction, thereby supporting the scraper module 400 from both sides, allowing the scraper module 400 to move more smoothly and ensuring a smoothing effect. It should be noted that the first guide components 620 on both sides can be independent components separate from the first power component 610, or they can be... Figure 3 The first guide component 620 on one side is integrated with the first power component 610 as shown.

[0093] The scraper module 400 is slidably connected to the base 100 via each of the first guide components 620, thereby enabling it to move along the first horizontal direction. It should be noted that the scraper module 400 can be directly connected to the first guide component 620, or it can be indirectly connected to the first guide component 620 via, for example, the fourth drive module 900 mentioned later.

[0094] Reference Figure 4 The second drive module 700 includes a second power component 710 and a second guide component 720. The light source module 500 is connected to the second power component 710 and can be driven by the second power component 710 to move along a second horizontal direction. For example, the second power component 710 can be the aforementioned linear motor power component, which occupies less space and has higher precision, facilitating precise control of the position of the light source module 500. In other embodiments, the second power component 710 can also be the aforementioned motor-screw power component, motor-synchronous belt power component, etc.

[0095] The second guide component 720 is used to guide the movement of the light source module 500. For example, the second guide component 720 can be a slide rail mechanism or a guide rod mechanism. In this embodiment, the second guide component 720 extends along the second horizontal direction and is disposed on opposite sides of the receiving groove 200, thereby supporting the light source module 500 from both sides, so that the light source module 500 can move more smoothly, thereby ensuring the curing effect.

[0096] The light source module 500 is slidably connected to the base 100 via each of the second guide components 720, thereby enabling it to move along the second horizontal direction. It should be noted that the light source module 500 can be directly connected to the second guide component 720, or it can be indirectly connected to the second guide component 720 via, for example, the fifth drive module 1000 mentioned later.

[0097] As mentioned above, in this embodiment, the first guide component 620 is distributed on opposite sides of the receiving groove 200 along the first horizontal direction, and the second guide component 720 is distributed on opposite sides of the receiving groove 200 along the second horizontal direction. The first guide component 620 and the second guide component 720 are staggered, which can make full use of the surrounding space of the receiving groove 200.

[0098] When the 3D printing device 10 also includes a first drive module 600 and a second drive module 700, in some embodiments of this utility model, refer to Figure 1 , Figure 2The 3D printing equipment 10 also includes a first support frame 1100, which is connected to the base 100. A second guide component 720 is connected to the first support frame 1100, so that the second guide component 720 is higher than the first guide component 620, and the light source module 500 is higher than the scraper module 400. In this way, the light source module 500 and the scraper module 400 can be misaligned in the vertical direction, avoiding interference between the two during movement, and making full use of the vertical space above the table.

[0099] For example, the first support frame 1100 is constructed as a gantry frame, with its bottom end connected to the table surface of the workbench of the base 100 and its top end connected to the second guide assembly 720. In addition, the first support frame 1100 is arranged on opposite sides of the receiving groove 200 along the second horizontal direction, thereby providing more stable support for the light source module 500 from both sides.

[0100] When the scraper module 400 and the light source module 500 move along the first horizontal direction and the second horizontal direction respectively, in some embodiments of this utility model, referring to Figure 1 The 3D printing equipment 10 also includes a first support frame 1100. The first support frame 1100 can be understood as described above. For example, the first support frame 1100 includes at least two first support columns 1110 and a first crossbeam 1120. The bottom end of the first support column 1110 is connected to the base 100 and extends upward in the vertical direction. The first crossbeam 1120 is connected to the top end of each first support column 1110. An installation space 1101 is defined between the first support column 1110 and the first crossbeam 1120.

[0101] Based on this, the 3D printing equipment 10 also includes a second drive module 700, which is connected to the first crossbeam 1120. The light source module 500 is connected to the second drive module 700 and can be driven by the second drive module 700 to move along a second horizontal direction. For example, the second drive module 700 may include the aforementioned second power component 710 and second guide component 720, both of which are connected to the upper side of the first crossbeam 1120.

[0102] In this embodiment, the 3D printing device 10 further includes a third drive module 800, which is connected to the base 100. The printing platform 300 is connected to the third drive module 800 and can be driven to rise and fall by the third drive module 800. The third drive module 800 is at least partially located within the installation space 1101. Thus, by utilizing the space inside the first support frame 1100 to install the third drive module 800, the overall layout is more compact, further improving space utilization.

[0103] For example, refer to Figure 5The third drive module 800 includes a third power component 810 and a third guide component 820. The third power component 810 is used to drive the printing platform 300 to rise and fall, and it can be the aforementioned motor-screw power component. The third guide component 820 is used to guide the rising and falling of the printing platform 300, and it can be a guide rod mechanism or a slide rail mechanism. The lower parts of the third power component 810 and the third guide component 820 are located within the base 100, and the upper parts are viewed from within the base 100 and housed within the installation space 1101.

[0104] When the scraper module 400 and the light source module 500 move along the first horizontal direction and the second horizontal direction respectively, in some embodiments of this utility model, referring to Figure 1 , Figure 5 The 3D printing equipment also includes a second support frame 1200 and a third drive module 800. The third drive module 800 includes a third power component 810 and a third guide component 820, which can be understood with reference to the aforementioned embodiments. In this embodiment, the third guide component 820 is disposed on opposite sides of the receiving groove 200 along a second horizontal direction, and the second support frame 1200 extends along a first horizontal direction, with its two ends respectively connected to the third guide components 820 on both sides. Thus, the third guide component 820 can guide the movement of the second support frame 1200 from opposite sides, making the movement of the second support frame 1200 and the printing platform connected to the second support frame 1200 more stable.

[0105] The third power assembly 810 is disposed on one side of the receiving groove 200 along the second horizontal direction and is connected to the second support frame 1200. The second support frame 1200 is connected to the printing platform 300, so that the second support frame 1200 can be driven by the third power assembly 810 to drive the printing platform 300 to rise and fall. The lifting and lowering of the printing platform 300 is manifested in two aspects: firstly, it gradually descends during the printing process to achieve layer-by-layer printing; secondly, it rises after printing to at least detach the workpiece from the resin, thus facilitating its removal. Based on this, the position of the printing platform 300 when picking up the workpiece is named the picking position, and the position during printing is named the printing position (it should be noted that the printing position is not a fixed position; any position where the printing platform 300 stops during the printing process is the printing position). The picking position is higher than the printing position, and the specific height of the picking position can be set or adjusted according to the needs of picking up the workpiece. Specifically, it is adjusted in response to the size of the workpiece. For example, the controller obtains the size of the workpiece. When the height of the workpiece is high, the controller can control the printing platform 300 to rise a smaller distance, at which point the picking position is lower. When the height of the workpiece is low, the controller can control the printing platform 300 to rise a larger distance, at which point the picking position is higher.

[0106] For example, the second support frame 1200 includes second support columns 1210 disposed on opposite sides of the receiving groove 200 along the second horizontal direction, and a second crossbeam 1220 connected between the two second support columns 1210. The second support columns 1210 extend vertically and are connected to the third guide assembly 820 and / or the third power assembly 810 on the corresponding side. The printing platform 300 is connected to the upper side of the second crossbeam 1220.

[0107] Reference Figure 3 The 3D printing equipment 10 also includes a fourth drive module 900, which includes a fourth power component 910. The fourth power component 910 is connected to the scraper module 400 and is used to drive the scraper module 400 to rise and fall. For example, the fourth power component 910 is the aforementioned motor-screw power component, wherein the motor and the screw of the fourth power component 910 are connected to the power output part of the first power component 610 (e.g., the screw seat of the first power component 610) through a corresponding connecting mechanism. The screw seat of the fourth power component 910 is then connected to the scraper module 400. In this way, the fourth power component 910 and the scraper module 400 can be synchronously driven by the first power component 610 to move along the first horizontal direction, and the scraper module 400 can be driven by the fourth power component 910 to rise and fall.

[0108] In this embodiment, refer to Figure 6 The second support frame 1200 extends along the first horizontal direction. The scraper module 400 is located above the second crossbeam 1220 of the second support frame 1200. Based on this, the fourth power assembly 910 is configured to drive the scraper module 400 to rise before the printing platform 300 moves upward to the part-retrieving position, or to drive the scraper module 400 to rise synchronously during the process of the printing platform 300 moving upward to the part-retrieving position. This avoids the scraper module 400 obstructing the lifting of the printing platform 300. For the former, the scraper module 400 first moves to the set avoidance position, and then the printing platform 300 is lifted. For the latter, the scraper module 400 and the printing platform 300 are lifted synchronously. Through the above settings, the second support frame 1200, which is guided at both ends and can move vertically, can provide stable support for the lifting and lowering of the printing platform 300, can meet the needs of the scraper module 400 for lateral scraping operations, and can also avoid interference between the scraper module 400 and the printing platform 300.

[0109] It should be noted that the upward clearance height of the scraper module 400 can be either moved to a fixed position, or the lifting height of the scraper module 400 can be adjusted according to the change in the lifting height of the printing platform 300, thereby ensuring that the distance between the scraper module 400 and the printing platform 300 is always not less than the set distance. For example, when the height of the workpiece is high, the lifting height of the printing platform 300 is small, and the lifting height of the scraper module 400 is also small.

[0110] When the 3D printing device 10 also includes a fourth drive module 900, refer to Figure 3 The fourth drive module 900 includes two fourth power components 910, which are connected to both ends of the scraper module 400 and configured to synchronously drive the scraper module 400 to rise and fall. This reduces the height difference between the two ends of the scraper module 400 during movement, keeping the scraper module 400 horizontal and ensuring a smoothing effect on the resin surface. The fourth power components 910 can be high-precision power components, such as the aforementioned motor-screw power component or linear motor power component, and are synchronously controlled by a controller.

[0111] Based on the first embodiment, in some embodiments of this utility model, reference is made to Figure 1 , Figure 4 The 3D printing equipment also includes a fifth drive module 1000, which includes a fifth power component 1010. The fifth power component 1010 is connected to the light source module 500 and is used to drive the light source module 500 to rise and fall. For example, the fifth power component 1010 is the aforementioned motor-screw power component, wherein the motor and the screw of the fifth power component 1010 are connected to the power output part of the second power component 710 (e.g., the mover of the second power component 710) through a corresponding connecting mechanism, and the screw seat of the fifth power component 1010 is connected to the light source module 500. In this way, the fifth power component 1010 and the light source module 500 can be driven synchronously by the second power component 710 to move along the first horizontal direction, and the light source module 500 can be driven to rise and fall by the fifth power component 1010.

[0112] In this embodiment, the fifth power component 1010 is configured to drive the light source module 500 to rise before the printing platform 300 moves upward to the part-retrieving position, or to drive the light source module 500 to rise synchronously during the process of the printing platform 300 moving upward to the part-retrieving position, thereby avoiding resin on the workpiece from contaminating the light source module 500 and causing damage to the light source module 500. For the former, it means that the light source module 500 moves to the set avoidance position first, and then the printing platform 300 is raised. For the latter, it means that the light source module 500 and the printing platform 300 are raised synchronously.

[0113] It should be noted that the upward clearance height of the light source module 500 can be either moved to a fixed position, or the lifting height of the light source module 500 can be adjusted to follow the change in the lifting height of the printing platform 300, thereby ensuring that the distance between the light source module 500 and the printing platform 300 is always not less than the set distance. For example, when the height of the workpiece is high, the lifting height of the printing platform 300 is small, and the lifting height of the light source module 500 is also small.

[0114] Based on the first embodiment, in some embodiments of this utility model, the scraper module 400 includes a scraper and a vibrator. The vibrator is connected to the drive module of the scraper module 400, such as the power output part of the first power assembly 610. The scraper is connected to the vibrator and can be driven by the vibrator to vibrate horizontally. The vibration direction of the scraper is perpendicular to the movement direction of the scraper. This helps the scraper to further break the surface tension of the resin, making the resin easier to scrape flat. For example, the vibrator can be a piezoelectric vibrator.

[0115] Based on the first embodiment, in some embodiments of this utility model, reference is made to Figure 4 The light source module 500 includes multiple light sources 510 distributed along a first horizontal direction, and the light source module 500 is configured to move between a third position and a fourth position along a second horizontal direction. The first horizontal direction is perpendicular to the second horizontal direction. In this way, the area of ​​a single projection of the light source module 500 can be further increased, enabling the printing equipment to process larger workpieces.

[0116] Based on the first embodiment, in some embodiments of this utility model, the light source module 500 does not project during the acceleration phase of movement, but projects after the speed stabilizes, which helps to ensure projection accuracy. In some specific embodiments, the light source module 500 is configured to switch to the working state after moving from the third position in a stopped state for a first set time to perform the first curing operation; in other specific embodiments, the light source module 500 is configured to switch to the working state after moving from the third position in a stopped state for a third set distance to perform the first curing operation. The first set time and the third set distance can be set according to the acceleration phase of the light source module 500. For example, the controller pre-stores the duration or movement distance of the acceleration phase of the light source module 500, ensuring that the first set time is greater than or equal to the duration, or the third set distance is greater than or equal to the movement distance.

[0117] Based on the first embodiment, in some other embodiments of this utility model, the light source module 500 does not project during the deceleration phase of movement, thereby helping to ensure projection accuracy. In some specific embodiments, the light source module 500 is configured to switch from a working state to a stopped state after completing the first curing operation, and move in the stopped state for a second set time to reach the fourth position. In other specific embodiments, the light source module 500 is configured to switch from a working state to a stopped state after completing the first curing operation, and move in the stopped state for a fourth set distance to reach the fourth position. The second set time and the fourth set distance can be set according to the deceleration phase of the light source module 500. For example, the controller pre-stores the duration or movement distance of the deceleration phase of the light source module 500, ensuring that the second set time is greater than or equal to the duration, or the fourth set distance is greater than or equal to the movement distance.

[0118] In addition, the state switching of the light source module 500 can also be controlled according to the speed of the light source module 500. For example, the 3D printing equipment also includes a detection device for detecting the speed of the light source module. The light source module is configured to move from the third position in a stopped state until the speed of the light source module 500 is detected to be within a set range (at which point the speed of the light source module 500 is considered to be stable), at which point it switches to the working state to perform the first curing operation.

[0119] For example, the 3D printing equipment also includes a detection device for detecting the speed of the light source module. The light source module is configured to switch to a stop state when the speed is lower than a set range (at which point it is considered that the light source module 500 has left the state of uniform motion) and move to the fourth position in the stop state.

[0120] The second embodiment of this utility model also proposes a 3D printing device, which includes a base 100, a receiving groove 200, a printing platform 300, a scraper module 400, and a light source module 500. The base 100, the receiving groove 200, the printing platform 300, and the scraper module 400 can all be understood with reference to the foregoing embodiments. The light source module 500 is fixed relative to the base 100. It should be noted that the number of light source modules 500 in this embodiment can be increased and arranged in an array based on the first embodiment, so as to adapt to the printing of large-scale and large-size workpieces.

[0121] In this embodiment, the scraper module 400 can also perform a scraping operation during its reset process, thereby making full use of its reset stroke and helping to improve printing efficiency. Specifically, the 3D printing device 10 is configured to perform at least the following cyclic actions:

[0122] 1. The printing platform descends 300 degrees to the first set distance;

[0123] 2. After the printing platform 300 descends, the scraper module 400 moves from the first position to the second position to perform the first scraping operation;

[0124] 3. The light source module 500 performs the first curing operation after the scraper module 400 performs the first leveling operation;

[0125] 4. After the light source module 500 performs the first curing operation, the printing platform 300 descends by a second predetermined distance;

[0126] 5. After the printing platform 300 descends, the scraper module 400 moves from the second position to the first position to perform the second scraping operation;

[0127] 6. The light source module 500 performs the second curing operation after the scraper module 400 performs the second leveling operation.

[0128] This embodiment can also improve efficiency to some extent.

[0129] The third embodiment of this utility model also proposes a 3D printing device, which includes a base 100, a receiving groove 200, a printing platform 300, a scraper module 400 and a light source module 500. The base 100, the receiving groove 200, the printing platform 300, the scraper module 400 and the light source module 500 can all be understood with reference to the foregoing embodiments.

[0130] In this embodiment, the light source module 500 can also perform a curing operation during its reset process, thereby making full use of its reset stroke and helping to improve printing efficiency. Specifically, the 3D printing device 10 is configured to perform at least the following cyclic actions:

[0131] 1. The printing platform descends 300 degrees to the first set distance;

[0132] 2. After the printing platform 300 descends, the scraper module 400 moves from the first position to the second position to perform the first scraping operation, and then moves from the second position back to the first position;

[0133] 3. After the scraper module 400 moves to the first position, the light source module 500 moves from the third position to the fourth position to perform the first curing operation;

[0134] 4. After the light source module 500 performs the first curing operation, the printing platform 300 descends by a second predetermined distance;

[0135] 5. After the printing platform 300 descends, the scraper module 400 moves from the first position to the second position to perform the second scraping operation, and then moves from the second position back to the first position;

[0136] 6. After the scraper module 400 moves to the first position, the light source module 500 moves from the fourth position to the third position to perform the second curing operation.

[0137] This embodiment can also improve efficiency to some extent.

[0138] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A 3D printing device, characterized by include: Base; A receiving groove, connected to the base, defines a cavity for receiving resin; A printing platform is connected to the base and located within the cavity; the printing platform is capable of moving up and down within the cavity. A scraper module, connected to the base and movable relative to the printing platform, is used to scrape the resin flat; A light source module, connected to the base and movable relative to the printing platform, is used to cure the resin that is scraped flat on the upper side of the printing platform; The 3D printing equipment is configured to perform at least the following cyclic actions: the printing platform descends a first predetermined distance; the scraper module moves from a first position to a second position after the printing platform descends to perform a first leveling operation; the light source module moves from a third position to a fourth position after the scraper module performs the first leveling operation to perform a first curing operation; the printing platform descends a second predetermined distance after the light source module performs the first curing operation; the scraper module moves from the second position to the first position after the printing platform descends to perform a second leveling operation; and the light source module moves from the fourth position to the third position after the scraper module performs the second leveling operation to perform a second curing operation.

2. The 3D printing device of claim 1, wherein, The scraper module is configured to move along a first horizontal direction between the first position and the second position, and the light source module is configured to move along a second horizontal direction between the third position and the fourth position, wherein the first horizontal direction is perpendicular to the second horizontal direction.

3. The 3D printing equipment according to claim 2, characterized in that, The 3D printing equipment also includes a first drive module for driving the scraper module to move, and a second drive module for driving the light source module to move; The first drive module includes a first power component and a first guide component. The first power component is connected to the scraper module. The first guide component is disposed on opposite sides of the receiving groove along the first horizontal direction and extends along the first horizontal direction. The scraper module is slidably connected to the base through each of the first guide components and can be driven by the first power component to move along the first horizontal direction. The second driving module includes a second power component and a second guide component. The second power component is connected to the light source module. The second guide component is disposed on opposite sides of the receiving groove along the second horizontal direction and extends along the second horizontal direction. The light source module is slidably connected to the base through each of the second guide components and can be driven by the second power component to move along the second horizontal direction.

4. The 3D printing equipment according to claim 3, characterized in that, The 3D printing equipment also includes a first support frame connected to the base, and a second guide component connected to the first support frame such that the second guide component is higher than the first guide component, and the light source module is higher than the scraper module.

5. The 3D printing equipment according to claim 2, characterized in that, The 3D printing equipment also includes a first support frame, which includes at least two first support columns and a first crossbeam connected to each of the first support columns. The first support columns are connected to the base and extend in a vertical direction, and an installation space is defined between the first support columns and the first crossbeam. The 3D printing equipment also includes a second drive module, which is connected to the first crossbeam and to the light source module, for driving the light source module to move along the second horizontal direction; The 3D printing equipment also includes a third drive module, which is connected to the base and at least partially located within the installation space. The third drive module is connected to the printing platform and is used to drive the printing platform to move up and down.

6. The 3D printing equipment according to claim 2, characterized in that, The 3D printing equipment also includes a second support frame and a third drive module. The third drive module includes a third power component and a third guide component. The third guide component is arranged on opposite sides of the receiving groove along the second horizontal direction. The second support frame extends along the first horizontal direction and its two ends are respectively connected to the third guide components on both sides. The second support frame is connected to the printing platform and can be driven by the third power component to raise and lower the printing platform. The printing platform has a pick-up position for picking up parts, which is higher than the printing position of the printing platform when the light source module performs the curing operation; The 3D printing equipment further includes a fourth drive module, which includes a fourth power component connected to the scraper module and configured to drive the scraper module to rise before the printing platform moves upward to the part-removal position, or to drive the scraper module to rise synchronously during the process of the printing platform moving upward to the part-removal position.

7. The 3D printing equipment according to claim 6, characterized in that, The fourth drive module includes two fourth power components, which are connected to both ends of the scraper module and configured to synchronously drive the scraper module to rise and fall.

8. The 3D printing equipment according to claim 1, characterized in that, The printing platform has a pick-up position for picking up parts, which is higher than the printing position of the printing platform when the light source module performs the curing operation; The 3D printing equipment further includes a fifth drive module, which includes a fifth power component connected to the light source module. The fifth power component is configured to drive the light source module to rise before the printing platform moves upward to the part-retrieving position, or to drive the light source module to rise synchronously during the process of the printing platform moving upward to the part-retrieving position.

9. The 3D printing equipment according to claim 1, characterized in that, The scraper module is configured to move along a first horizontal direction between the first position and the second position. The scraper module includes a scraper and a vibrator. The scraper is connected to the vibrator and can be driven by the vibrator to vibrate along a second horizontal direction. The first horizontal direction is perpendicular to the second horizontal direction.

10. The 3D printing equipment according to claim 1, characterized in that, The light source module includes multiple light sources distributed along a first horizontal direction, and the light source module is configured to move between the third and fourth positions along a second horizontal direction, wherein the first horizontal direction is perpendicular to the second horizontal direction.

11. The 3D printing equipment according to claim 1, characterized in that, The light source module is configured to move from the third position in a stopped state for a first set time or a third set distance and then switch to a working state to perform the first curing operation; or, the 3D printing equipment further includes a detection device for detecting the speed of the light source module, wherein the light source module is configured to move from the third position in a stopped state until the speed of the light source module increases to a set range and then switch to a working state to perform the first curing operation; And / or, the light source module is configured to switch from a working state to a stopped state after completing the first curing operation, and move in the stopped state for a second set time or a fourth set distance to reach the fourth position; or, the 3D printing equipment further includes a detection device for detecting the speed of the light source module, the light source module being configured to switch to a stopped state when the speed is lower than a set range, and move in the stopped state to the fourth position.

12. 3D printing equipment, characterized in that, include: Base; A receiving groove, connected to the base, defines a cavity for receiving resin; A printing platform is connected to the base and located within the cavity; the printing platform is capable of moving up and down within the cavity. A scraper module, connected to the base and movable relative to the printing platform, is used to scrape the resin flat; A light source module, connected to the base, is used to cure the resin that is scraped flat on the upper side of the printing platform; The 3D printing equipment is configured to perform at least the following cyclic actions: the printing platform descends a first predetermined distance; the scraper module moves from a first position to a second position after the printing platform descends to perform a first leveling operation; the light source module performs a first curing operation after the scraper module performs the first leveling operation; the printing platform descends a second predetermined distance after the light source module performs the first curing operation; the scraper module moves from the second position to the first position after the printing platform descends to perform a second leveling operation; and the light source module performs a second curing operation after the scraper module performs the second leveling operation.

13. 3D printing equipment, characterized in that, include: Base; A receiving groove, connected to the base, defines a cavity for receiving resin; A printing platform is connected to the base and located within the cavity; the printing platform is capable of moving up and down within the cavity. A scraper module, connected to the base and movable relative to the printing platform, is used to scrape the resin flat; A light source module, connected to the base and movable relative to the printing platform, is used to cure the resin that is scraped flat on the upper side of the printing platform; The 3D printing equipment is configured to perform at least the following cyclic actions: the printing platform descends a first predetermined distance; the scraper module moves from a first position to a second position to perform a first leveling operation after the printing platform descends, and then moves from the second position to the first position; the light source module moves from a third position to a fourth position to perform a first curing operation after the scraper module moves to the first position; the printing platform descends a second predetermined distance after the light source module performs the first curing operation; the scraper module moves from a first position to a second position to perform a second leveling operation after the printing platform descends, and then moves from the second position to the first position; the light source module moves from the fourth position to the third position to perform a second curing operation after the scraper module moves to the first position.

Images