Container assembly and additive manufacturing equipment

Abstract

The utility model provides a container assembly and additive manufacturing equipment. The container assembly comprises a base, a material frame, a screen assembly and a release film, and a mounting groove is formed in one side of the base; the material frame is arranged around a groove opening of the mounting groove, and the material frame is detachably connected to the base; the screen assembly is arranged in the mounting groove, and at least part of the screen assembly is clamped between the material frame and the base; the release film is arranged on the side, close to the material frame, of the screen assembly, and at least part of the release film is clamped between the material frame and the screen assembly.

Description

Technical Field

[0001] This application relates to the field of additive manufacturing technology, and in particular to a container assembly and additive manufacturing equipment. Background Technology

[0002] Additive manufacturing, such as 3D printing, provides the technology to create solid objects, typically by curing printed material in specific locations. In some photopolymer additive manufacturing methods, solid objects are created by continuously forming thin layers of curable polymer resin, usually by first forming one layer on the build surface and then stacking them one by one. Liquid resin, typically located in a container, is exposed to light radiation to cure a layer, causing it to harden and adhere to the previously cured layer or the underside of the build surface.

[0003] Existing container components typically have a release membrane at the bottom, which is usually fixed by screws or adhesive, making disassembly and assembly cumbersome and inefficient. Utility Model Content

[0004] This application provides container components and additive manufacturing equipment to solve the problem of cumbersome disassembly and assembly of release films in known technologies.

[0005] This application provides a container assembly, including a base, a material frame, a screen assembly, and a release film. The base has a mounting groove on one side; the material frame is arranged around the opening of the mounting groove and is detachably connected to the base; the screen assembly is disposed in the mounting groove and is at least partially clamped between the material frame and the base; the release film is disposed on the side of the screen assembly near the material frame and is at least partially clamped between the material frame and the screen assembly.

[0006] In one possible implementation, the inner peripheral wall of the mounting groove is provided with a support protrusion, the support protrusion being configured to support the screen assembly, the screen assembly being clamped between the support protrusion and the frame.

[0007] In one possible implementation, the container assembly further includes a locking structure that movably abuts the end of the material frame away from the base, the locking structure being configured to press the material frame against the screen assembly.

[0008] In one possible implementation, the locking structure includes a rotating member and a supporting member, one end of the rotating member being rotatably connected to the base, the supporting member being connected to the other end of the rotating member, and the supporting member being rotatable to support the end of the material frame away from the base.

[0009] In one possible implementation, the container assembly further includes a heat sink disposed around the outer peripheral surface of the base and detachably connected to the base, the heat sink being configured to dissipate heat from the screen assembly and the light source assembly.

[0010] In one possible implementation, the screen component includes:

[0011] The screen base is supported by the supporting protrusion;

[0012] A printing screen is located on the side of the screen base away from the supporting protrusion;

[0013] A protective film is disposed on the side of the printing screen away from the screen substrate, and the material frame abuts against the protective film.

[0014] In one possible implementation, the outer contour of the protective film extends beyond the outer contour of the frame, and the inner peripheral surface of the heat sink is provided with a pressing protrusion. The pressing protrusion is located on the side of the screen assembly away from the supporting protrusion, and the pressing protrusion abuts against the portion of the protective film that extends beyond the frame.

[0015] In one possible implementation, the container assembly further includes a first sealing ring, wherein a first sealing groove is formed on the side of the pressing protrusion near the protective film, the first sealing ring is disposed in the first sealing groove, and the first sealing ring is clamped between the pressing protrusion and the portion of the protective film extending beyond the printing screen.

[0016] In one possible implementation, the outer contour of the release film extends beyond the outer contour of the material frame, the material frame is arranged around the release film and the material frame and the release film together form a material groove.

[0017] In one possible implementation, the release film includes a film portion and a frame portion, the frame portion being disposed around the outer peripheral surface of the film portion, and the frame portion being integrally formed with the film portion;

[0018] The frame portion is clamped between the material frame and the base, and the membrane portion and the inner peripheral wall of the material frame form a material trough.

[0019] In one possible implementation, the container assembly further includes a first pressure ring and a second pressure ring, the first pressure ring and the second pressure ring being disposed around the outer peripheral surface of the material frame, and the first pressure ring and the second pressure ring being spaced apart, with the frame portion of the release film clamped between the first pressure ring and the second pressure ring.

[0020] In one possible implementation, the inner circumferential surface of the heat sink is provided with a pressing protrusion, the pressing protrusion is located on the side of the screen assembly away from the supporting protrusion, and the pressing protrusion supports the second pressure ring, while the material frame abuts against the side of the first pressure ring away from the second pressure ring.

[0021] In one possible implementation, the outer peripheral surface of the material frame is provided with a second sealing groove, and the container assembly further includes a second sealing ring, which is disposed in the second sealing groove and is clamped between the outer peripheral surface of the material frame and the inner peripheral surface of the first pressure ring.

[0022] In one possible implementation, the container assembly further includes a light source assembly disposed within the mounting slot and located on the side of the screen assembly away from the material frame, the light source assembly being detachably connected to the base.

[0023] In one possible implementation, the container assembly further includes a circuit assembly, and a heat dissipation cavity is provided at one end of the base away from the material frame. The circuit assembly is disposed in the heat dissipation cavity and is electrically connected to the screen assembly and the light source assembly.

[0024] This application also provides an additive manufacturing apparatus, including a build platform and the aforementioned container assembly, wherein one of the build platform and the container assembly is movable relative to the other along a first direction.

[0025] The container assembly, screen assembly, and release film of this application are clamped between the material frame and the base, and the material frame and the base are detachably connected. The release film and screen assembly clamped by the two can be quickly removed after the material frame is removed from the base, which improves the disassembly and assembly efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the additive manufacturing equipment of this application in one embodiment.

[0027] Figure 2 This is an exploded view of the container component of this application in one embodiment.

[0028] Figure 3 This is an exploded view of a portion of the structure of the container component of this application in one embodiment.

[0029] Figure 4 This is a cross-sectional schematic diagram of the container component of this application in one embodiment.

[0030] Figure 5 for Figure 4 A magnified view of a portion of region B corresponding to the container component in the diagram.

[0031] Figure 6 This is a schematic diagram of the structure of the light source component in one embodiment of the container component of this application.

[0032] Figure 7 This is a schematic diagram showing the distribution of light-emitting elements in one embodiment of the container assembly of this application.

[0033] Figure 8 This is a layered schematic diagram of the light source component in one embodiment of the container component of this application.

[0034] Figure 9 This is a schematic diagram showing the distribution of the light-shielding elements in one embodiment of the container assembly of this application.

[0035] Figure 10 This is a schematic diagram of the installation of the circuit components in one embodiment of the container component of this application.

[0036] Figure 11 This is a schematic flowchart of the additive manufacturing method of this application in one embodiment.

[0037] Key component symbols: 200, Additive manufacturing method; 100, Additive manufacturing equipment; Z, First direction; Y, Second direction; X, Third direction; P2, Limiting surface; P5, Molding surface; 3, Liquid level sensor; 4, Second sealing ring; 5, First sealing ring; 10, Building platform; 113, Limiting component; 30, Moving assembly; 40, Container assembly; 401, Material trough; 41, Base; 410, Support protrusion; 411, Mounting groove; 4 12. Base plate; 4120. Air outlet; 413. Heat dissipation cavity; 414. Heat dissipation fins; 415. Airflow channel; 416. Fan; 417. Wiring space; 42. Material frame; 421. Through cavity; 422. Supporting protrusion; 423. Second sealing groove; 424. Guide groove; 43. Release film; 431. Film part; 432. Frame part; 4320. First through hole; 44. Locking structure; 441. Rotating part; 442. Supporting part; 45. First pressure ring; 451. Second through hole; 452. Inclined groove; 453. Pressure ring portion; 454. First retaining protrusion; 46. Second pressure ring; 461. Connecting post; 462. Second retaining protrusion; 47. Screen assembly; 471. Screen substrate; 472. Printed screen; 4720. First conductive sheet; 473. Protective film; 48. Light source assembly; 481. Heat sink; 482. Lamp holder; 4820. Second conductive sheet; 483. Optical component; 4831, First light-emitting group; 48310, First light-emitting component; 4832, Second light-emitting group; 48320, Second light-emitting component; 484, Second lens; 485, First lens; 4851, Lens base; 4852, Lens protrusion; 486, Light-shielding component; 49, Heat sink; 491, Pressing protrusion; 4910, First sealing groove; 492, Heat dissipation vent; 80, Circuit assembly; 81, Circuit board; 82, Third conductive sheet.

[0038] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0039] The following description will refer to the accompanying drawings to provide a more complete picture of the present application. The drawings illustrate exemplary embodiments of the present application. However, the present application may be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals denote the same or similar components.

[0040] The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to limit the application. As used herein, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to also include the plural forms. Furthermore, when used herein, “comprising” and / or “including” and / or “having,” integers, steps, operations, components, and / or components, but does not exclude the presence or addition of one or more other features, regions, integers, steps, operations, components, and / or groups thereof.

[0041] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Furthermore, unless expressly defined herein, terms such as those defined in a general dictionary should be interpreted as having the same meaning as they have in the relevant art and in the content of this application, and will not be interpreted as having an idealized or overly formal meaning.

[0042] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0043] like Figure 1 As shown, this embodiment provides an additive manufacturing apparatus 100, including a build platform 10, a container assembly 40, a moving assembly 30, and other structures necessary for performing photopolymer additive manufacturing. The moving assembly 30 is drive-connected to one of the build platform 10 and the container assembly 40 to drive one of the build platform 10 and the container assembly 40 to move relative to the other, thereby achieving layer-by-layer printing. The moving assembly 30 can be a linear motion mechanism such as a lead screw or slide table.

[0044] For ease of reading, this application introduces a first direction Z, a second direction Y, and a third direction X to describe the embodiments of this application. The first direction Z, the second direction Y, and the third direction X can be three non-parallel straight lines in space; further, the first direction Z, the second direction Y, and the third direction X can be three mutually perpendicular directions in a three-dimensional coordinate system (a three-dimensional Cartesian coordinate system). In subsequent embodiments, the first direction Z is described as the Z-axis direction of the three-dimensional coordinate system, the second direction Y is the Y-axis direction of the three-dimensional coordinate system, and the third direction X is the X-axis direction of the three-dimensional coordinate system.

[0045] like Figures 2 to 5As shown, this embodiment also provides a container assembly 40, which includes a base 41, a material frame 42, a screen assembly 47, and a release film 43. Along the first direction Z, a mounting groove 411 is provided on one side of the base 41. The material frame 42 is disposed around the opening of the mounting groove 411 and is detachably connected to the base 41. The screen assembly 47 is disposed within the mounting groove 411, and is at least partially clamped between the material frame 42 and the base 41. The release film 43 is disposed on the side of the screen assembly 47 near the material frame 42, and is at least partially clamped between the material frame 42 and the screen assembly 47.

[0046] Thus, the container assembly 40, screen assembly 47 and release film 43 of this application are clamped between the material frame 42 and the base 41, and the material frame 42 and the base 41 are detachably connected. The release film 43 and screen assembly 47 clamped by the two can be quickly removed after the material frame 42 is removed from the base 41, which improves the disassembly and assembly efficiency.

[0047] Please combine Figures 2 to 5 In one embodiment, the base 41 is detachably connected to the movable component 30, so that the movable component 30 can move the base 41 closer to or further away from the construction platform 10 along the first direction Z. Along the first direction Z, the side of the base 41 closest to the construction platform 10 has a mounting groove 411. The material frame 42 is detachably connected to the end of the base 41 closest to the construction platform 10, and along the first direction Z, the material frame 42 has a through cavity 421. A release film 43 is at least partially disposed within the mounting groove 411, and the release film 43 is clamped between the material frame 42 and the base 41. The surface of the release film 43 facing the construction platform 10 and the inner peripheral wall of the material frame 42 form a material groove 401.

[0048] The base 41 is generally square in shape and can be connected to the movable assembly 30 by screws or other components. The mounting groove 411 extends downward from the top surface of the base 41, and the depth of the mounting groove 411 is less than the height of the base 41. The outer diameter of the material frame 42 is smaller than the inner diameter of the mounting groove 411, so that the material frame 42 can be partially placed inside the mounting groove 411.

[0049] Furthermore, the container assembly 40 also includes a first pressure ring 45 and a second pressure ring 46, which are spaced apart along the first direction Z, and the release film 43 is clamped between the first pressure ring 45 and the second pressure ring 46. Specifically, along the first direction Z, the first pressure ring 45 and the second pressure ring 46 are clamped between the base 41 and the material frame 42.

[0050] Specifically, both the first pressure ring 45 and the second pressure ring 46 are annular structures. The second pressure ring 46 is placed on the top surface of the base 41, supported by the base 41, and surrounds the opening of the mounting groove 411. The first pressure ring 45 is placed above the second pressure ring 46, and the inner diameters of the first pressure ring 45 and the second pressure ring 46 are the same.

[0051] The release film 43 includes a film portion 431 and a frame portion 432. The frame portion 432 is disposed around the outer peripheral surface of the film portion 431, and the frame portion 432 is integrally formed with the film portion 431, so as to facilitate the direct installation of the release film 43 through the frame portion 432, thereby improving the installation and removal efficiency of the release film 43.

[0052] The frame portion 432 is clamped between the first pressure ring 45 and the second pressure ring 46. The film portion 431 has a generally curved structure, and part of the film portion 431 extends into the second pressure ring 46. The bottom of the material frame 42 passes through the first pressure ring 45 and is pressed against the release film 43. The surface of the film portion 431 facing the construction platform 10 and the inner peripheral wall of the material frame 42 form a material groove 401.

[0053] Specifically, the bottom outer peripheral surface of the material frame 42 is provided with a plurality of abutting protrusions 422, which are spaced apart around the outer peripheral surface of the material frame 42. The top opening of the first pressure ring 45 is provided with a plurality of inclined grooves 452, which are inclined and used to accommodate the abutting protrusions 422. When the abutting protrusions 422 are accommodated within the inclined grooves 452, the abutting protrusions 422 abut against the first pressure ring 45, applying a downward force along the first direction Z and a radial outward force along the first pressure ring 45, thereby ensuring the stability of the first pressure ring 45 installation.

[0054] The top surface of the second pressure ring 46 has a plurality of connecting posts 461 protruding from it, and the plurality of connecting posts 461 are evenly spaced around the opening of the second pressure ring 46. The frame portion 432 has a plurality of first through holes 4320, each corresponding to one of the connecting posts 461, and the first through holes 4320 penetrate the frame portion 432 along the first direction Z. The first pressure ring 45 has a plurality of second through holes 451, each corresponding to one of the connecting posts 461, and the second through holes 451 penetrate the first pressure ring 45 along the first direction Z. The connecting posts 461 pass through their corresponding first through holes 4320 and second through holes 451, thereby limiting the release film 43.

[0055] In this embodiment, a pressure ring portion 453 protrudes from the bottom end face of the first pressure ring 45. The pressure ring portion 453 surrounds the opening of the first pressure ring 45 and is integrally formed with the first pressure ring 45. The pressure ring portion 453 is located inside the second pressure ring 46 and abuts against the inner circumferential surface of the second pressure ring 46.

[0056] A first retaining protrusion 454 protrudes from the outer peripheral surface of the pressure ring portion 453, and the first retaining protrusion 454 surrounds the outer peripheral surface of the pressure ring portion 453. A second retaining protrusion 462 protrudes from the inner peripheral surface of the second pressure ring 46, and the second retaining protrusion 462 surrounds the inner peripheral surface of the second pressure ring 46. Along the first direction Z, the first retaining protrusion 454 and the second retaining protrusion 462 are spaced apart, and the frame portion 432 is clamped between the first retaining protrusion 454 and the second retaining protrusion 462, further improving the stability of the connection between the first pressure ring 45, the second pressure ring 46 and the release film 43, and ensuring that the release film 43 still has relatively good installation stability when screws or other components are not used to install the release film 43.

[0057] Specifically, a second sealing groove 423 is provided around the outer circumference of the bottom of the material frame 42, and a second sealing ring 4 is installed in the second sealing groove 423. The second sealing ring 4 is clamped between the outer circumference of the material frame 42 and the inner circumference of the pressure ring part 453 to prevent resin leakage in the material groove 401.

[0058] Please combine Figures 2 to 5 In one embodiment, the container assembly 40 further includes a locking structure 44 that movably abuts against one end of the material frame 42 away from the base 41, and the locking structure 44 is configured to press the material frame 42 against the base 41.

[0059] The locking structure 44 includes a rotating member 441 and a holding member 442. The rotating member 441 is arranged along the first direction Z, and its bottom end is rotatably connected to the base 41. The holding member 442 is connected to the top end of the rotating member 441, and the holding member 442 can rotate with the rotating member 441 until the holding member 442 is partially located above the material frame 42. The holding member 442 holds the material frame 42 in the first direction Z, thereby pressing the material frame 42 against the base 41. Thus, the holding member 442 achieves relative fixation of the material frame 42, the first pressure ring 45, the release film 43, the second pressure ring 46, and the base 41 in the first direction Z.

[0060] Thus, when it is necessary to remove the release film 43, the retaining member 442 can be rotated until it no longer presses against the material frame 42, and then the material frame 42 and the first pressure ring 45 can be removed before the release film 43 can be removed. Compared with the threaded connection structure, this improves the efficiency of removing and installing the release film 43.

[0061] In this embodiment, a liquid level sensor 3 is installed on the material frame 42 to detect the height of the resin in the material tank 401. Flow guide channels 424 are provided at the four corners of the material frame 42, and the flow guide channels 424 are inclined to guide the resin in the material tank 401 to flow out.

[0062] Please combine Figures 1 to 5In one embodiment, limiting members 113 are respectively provided on opposite sides of the construction platform 10, and the end face of the construction platform 10 near the container assembly 40 is designated as a molding surface P5, on which printing consumables are cured and molded. The end of the limiting member 113 facing the container assembly 40 is provided with a limiting surface P2. The first distance between the limiting surface P2 and the end face of the material frame 42 facing the construction platform 10 is smaller than the second distance between the molding surface P5 and the top surface of the release film 43, so that when the limiting surface P2 and the end face of the material frame 42 facing the construction platform 10 are pressed together, there is a molding cavity between the molding surface P5 and the release film 43.

[0063] Optionally, the difference between the first and second spacings is 0.3mm, meaning the height of the forming cavity is 0.3mm. This ensures that when the container assembly 40 rises, the limiting member 113 contacts the upper edge of the material frame 42 first, preventing the building platform 10 from impacting the release film 43 and other structures, thus preventing damage. Furthermore, it ensures that the limiting members 113 of the building platform 10 are pressed firmly against the material frame 42, forcibly restricting the position between the forming surface P5 and the top surface of the release film 43, leaving only the minimum thickness space. This ensures a high success rate for the printed part after forming and reduces printing failures due to leveling issues. Further, when the top surface of the material frame 42 of the container assembly 40 abuts against the limiting surface P2, a forming cavity is formed between the forming surface P5 and the top surface of the release film 43. The height of this forming cavity is the thickness of the printed layer.

[0064] It is understood that in other embodiments, the difference between the first spacing and the second spacing may also be other values ​​such as 0.2mm or 0.4mm.

[0065] In addition, when using the additive manufacturing equipment 100 of this application, the building platform 10 needs to be leveled first to ensure that the molding surface P5 is in a horizontal state, so as to prevent the cured layer from falling off after molding on the molding surface P5.

[0066] Please combine Figures 2 to 5 In one embodiment, the container assembly 40 further includes a light source assembly 48. The light source assembly 48 emits light and passes through the screen assembly 47 to irradiate a photocurable material such as resin, thereby obtaining various cured layers of the desired pattern. The various cured layers are stacked to form a printed part.

[0067] Both the screen assembly 47 and the light source assembly 48 are located within the mounting groove 411. Along the first direction Z, the screen assembly 47 is positioned on the side of the release film 43 away from the construction platform 10, and the light source assemblies 48 are spaced apart on the side of the screen assembly 47 away from the release film 43. The light source assembly 48 emits light toward the screen assembly 47. After passing through the screen assembly 47, the light is directed onto the photopolymer resin in the molding cavity, causing it to cure and adhere to the molding surface P5.

[0068] In this embodiment, the screen assembly 47 includes a screen substrate 471, a printing screen 472, and a protective film 473. The screen substrate 471 is located within the mounting groove 411. The printing screen 472 is disposed on the side of the screen substrate 471 near the release film 43, and is supported by the screen substrate 471. The screen substrate 471 is made of glass to ensure that light can penetrate it. The protective film 473 is affixed to the side of the printing screen 472 away from the screen substrate 471. The protective film 473 is a tempered glass film, which protects the surface of the printing screen 472 and prevents damage to it.

[0069] The inner peripheral wall of the mounting groove 411 is provided with a support protrusion 410. The screen base 471 is placed on the top surface of the support protrusion 410 so that the support protrusion 410 supports the screen base 471. In addition, when the screen base 471 is placed on the support protrusion 410, a cavity is formed between the screen base 471 and the bottom wall of the mounting groove 411 for the installation of the light source assembly 48.

[0070] The outer contour of the protective film 473 extends beyond the outer contour of the printing screen 472 to ensure that the protective film 473 can completely cover the printing screen 472.

[0071] Furthermore, the container assembly 40 also includes a heat sink 49, which may be made of a thermally conductive material such as aluminum. The heat sink 49 surrounds the outer periphery of the base 41, and the heat sink 49 and the base 41 are detachably connected. For example, the heat sink 49 and the base 41 are connected by bolts or other components, and the heat sink 49 and the base 41 are locked together in the first direction Z.

[0072] The heat sink 49 is thermally coupled to the light source assembly 48 to dissipate heat from the light source assembly 48. A pressing protrusion 491 is provided on the inner circumferential surface of the heat sink 49. The pressing protrusion 491 is located on the side of the protective film 473 away from the printing screen 472, and it abuts against the portion of the protective film 473 that extends beyond the printing screen 472, thereby pressing the protective film 473 and the printing screen 472 firmly onto the screen base 471. Furthermore, the screen base 471 is supported by a support protrusion 410, and the entire screen assembly 47 can be pressed against the support protrusion 410 by the pressing protrusion 491, thus limiting the position of the screen assembly 47. Additionally, the feed frame 42 also presses the first pressure ring 45 and the second pressure ring 46 against the support protrusion 410.

[0073] The container assembly 40 also includes a first sealing ring 5. A first sealing groove 4910 is provided on the side of the pressing protrusion 491 near the protective film 473. The first sealing ring 5 is disposed in the first sealing groove 4910 and is clamped between the pressing protrusion 491 and the area of ​​the protective film 473 that extends beyond the printing screen 472, thereby preventing resin leakage from flowing into the printing screen 472.

[0074] Please combine Figures 6 to 8 And see Figure 2 In one embodiment, the light source assembly 48 includes a plurality of light-emitting elements 483 arranged in a matrix. Along the first direction Z, the light source assembly 48 further includes a heat sink 481, a lamp holder 482, a second lens 484, and a first lens 485 arranged sequentially. The heat sink 481 is fixed within a mounting groove 411 and is thermally coupled to a heat sink base 49. The lamp holder 482 is mounted on the top surface of the heat sink 481, and the plurality of light-emitting elements 483 are arrayed on the top surface of the lamp holder 482. The first lens 485 and the second lens 484 allow light emitted from the light-emitting elements 483 to pass through and can straighten the light.

[0075] In this embodiment, the light-emitting element 483 is generally rectangular in shape, and multiple light-emitting elements 483 are distributed in a honeycomb pattern. Under the control of a control device, some of the light-emitting elements 483 can operate. When printing a specific shaped printing layer is required, the light-transmitting and non-light-transmitting areas of the screen assembly 47 need to be adjusted. The control device can adjust the light-emitting elements 483 corresponding to the light-transmitting area to emit light towards the light-transmitting area, and control the light-emitting elements 483 not corresponding to the light-transmitting area to stop operating. This achieves zoned operation of the light source assembly 48, eliminating the need for all light-emitting elements 483 to emit light simultaneously. This reduces unnecessary power consumption and heat dissipation caused by the light-emitting elements 483 being constantly lit, and also increases the lifespan of the light source assembly 48.

[0076] The plurality of light-emitting elements 483 include a plurality of first light-emitting groups 4831 and a plurality of second light-emitting groups 4832. Along the second direction Y, the plurality of first light-emitting groups 4831 are arranged sequentially at intervals, and a second light-emitting group 4832 is provided between any two adjacent first light-emitting groups 4831. Along the third direction X, each first light-emitting group 4831 includes a plurality of first light-emitting elements 48310 arranged sequentially at intervals, and each second light-emitting group 4832 includes a plurality of second light-emitting elements 48320 arranged sequentially at intervals. Specifically, along the second direction Y, any one second light-emitting element 48320 is located between two adjacent first light-emitting elements 48310.

[0077] The first lens 485 includes a lens base 4851 and a plurality of lens protrusions 4852. Along the first direction Z, the lens base 4851 is disposed on the side of the light-emitting element 483 away from the lamp holder 482. The plurality of lens protrusions 4852 are arrayed on the side of the lens base 4851 away from the light-emitting element 483. The plurality of lens protrusions 4852 are arranged one-to-one with the plurality of light-emitting elements 483, so that the light emitted by each light-emitting element 483 is projected onto the corresponding lens protrusion 4852, so that the light emitted by each light-emitting element 483 can be straightened by the corresponding lens protrusion 4852, thereby improving the uniformity and collimation of the beam formed by the light emitted by the plurality of light-emitting elements 483.

[0078] Thus, the light source assembly 48 of this application, by providing multiple arrayed light-emitting elements 483, can improve the uniformity of the light emitted by the light source assembly 48. Furthermore, this application also provides multiple arrayed lens protrusions 4852, with each lens protrusion 4852 corresponding to one of the multiple light-emitting elements 483. This ensures that the light emitted by each light-emitting element 483 is projected onto the corresponding lens protrusion 4852, improving the collimation of the light emitted by each light-emitting element 483 and reducing the divergence angle of each light-emitting element 483. This further improves the collimation of the light emitted by the light source assembly 48 and enhances printing accuracy. Furthermore, the multiple first light-emitting elements 48310 and multiple second light-emitting elements 48320 in any adjacent first light-emitting group 4831 and second light-emitting group 4832 are staggered, so that the multiple light-emitting elements 483 are distributed in a honeycomb pattern. Compared with the multiple light-emitting elements 483 being distributed in a rectangular pattern, this distribution method adopted in this application can avoid obvious dark lines between the light spots emitted by each light-emitting element 483 due to the dispersion of light, which would affect the printing accuracy.

[0079] The second lens 484 is disposed between the light-emitting element 483 and the lens base 4851. The second lens 484 can be a polarizing lens. For example, a polarizing film is attached to a glass substrate to form the second lens 484, thereby reducing or eliminating surface reflection and other phenomena of light emitted by the light-emitting element 483.

[0080] Along the first direction Z, the projections of multiple light-emitting elements 483 onto the lamp holder 482 are located within the range of the projection of the second lens 484 onto the lamp holder 482, so as to ensure that the light emitted by each light-emitting element 483 passes through the second lens 484 before being directed to the first lens 485.

[0081] Furthermore, the number of first light-emitting elements 48310 in the plurality of first light-emitting groups 4831 is greater than the number of second light-emitting elements 48320 in the plurality of second light-emitting groups 4832. The sum of the projected areas of the first projections of the first light-emitting elements 48310 in the plurality of first light-emitting groups 4831 is greater than the sum of the projected areas of the second projections of the second light-emitting elements 48320 in the plurality of second light-emitting groups 4832, to ensure that the cumulative luminous flux of each first light-emitting element 48310 in the plurality of first light-emitting groups 4831 is greater than the cumulative luminous flux of each second light-emitting element 48320 in the plurality of second light-emitting groups 4832, thereby ensuring that the luminous flux at the edge of the light source assembly 48 is close to the luminous flux at the center of the light source assembly 48, and improving the uniformity of illumination of the light source assembly 48.

[0082] In this embodiment, along the first direction Z, the end of the light-emitting element 483 away from the lamp holder 482 abuts against the second lens 484, making the thickness of the entire light source assembly 48 smaller, reducing the volume and heat of the light source assembly 48, and improving the heat dissipation efficiency of the light source assembly 48.

[0083] Furthermore, such as Figure 8 and Figure 9 As shown, the light source assembly 48 also includes a light-shielding member 486. The light-shielding member 486 is made of an opaque material and is generally a hollow columnar structure with openings at both ends. A second lens 484 is disposed inside the light-shielding member 486 so that external light is blocked from entering the second lens 484 by the light-shielding member 486, so that the light passing through the second lens 484 and hitting the first lens 485 is all light emitted by the light-emitting member 483, thus preventing external light from affecting the light emission effect of the light source assembly 48. The number of light-shielding elements 486 is set to be multiple, and the multiple light-shielding elements 486 are disposed between the lamp holder 482 and the second lens 484. The number of second lenses 484 is the same as the sum of the number of first light-emitting elements 48310 and second light-emitting elements 48320. Light-shielding elements 486 are provided on the light-emitting path of each first light-emitting element 48310 and each second light-emitting element 48320, so as to guide the light path of each first light-emitting element 48310 and second light-emitting element 48320 through the light-shielding elements 486.

[0084] In this embodiment, the light-shielding member 486 is disposed on the outside of the first light-emitting member 48310 or the second light-emitting member 48320, and the outer contour of the light-shielding member 486 extends beyond the outer contour of the first light-emitting member 48310 and the second light-emitting member 48320, so that any one of the first light-emitting members 48310 is spaced apart from the adjacent second light-emitting member 48320 or the adjacent first light-emitting member 48310.

[0085] The structure of the light-shielding element 486 is a hexagonal prism structure, and each light-shielding element 486 is arranged in a honeycomb array. Furthermore, since the outer contour of the light-shielding element 486 exceeds the outer contour of the first light-emitting element 48310 and the second light-emitting element 48320, it is ensured that any first light-emitting element 48310 is spaced apart from the adjacent second light-emitting element 48320 or the adjacent first light-emitting element 48310.

[0086] Furthermore, the light-shielding member 486 is designed as a hexagonal prism, which enables the splicing of the light spots of the first light-emitting member 48310 and the second light-emitting member 48320 at their edges, ensuring that the light emitted by the first light-emitting member 48310 and the second light-emitting member 48320 forms a point light source. Simultaneously, given a fixed cross-sectional area of ​​the first light-emitting member 48310 and the second light-emitting member 48320, the light-shielding member 486, with its regular hexagonal cross-section, blocks less light than other shapes such as squares.

[0087] Please combine Figure 10And see Figure 2 and Figure 5 In one embodiment, the container assembly 40 further includes a circuit assembly 80. A heat dissipation cavity 413 is provided at the end of the base 41 away from the material frame 42. The circuit assembly 80 is disposed in the heat dissipation cavity 413 and is electrically connected to the screen assembly 47 and the light source assembly 48.

[0088] Along the second direction Y, the inner wall of one side of the heat sink 49 is spaced apart from the inner wall of one side of the adjacent base 41, forming a wiring space 417 between them. The wiring space 417 connects the mounting groove 411 and the heat dissipation cavity 413.

[0089] A first conductive sheet 4720 is provided on the printing screen 472, and a second conductive sheet 4820 is provided on the lamp holder 482. Both the first conductive sheet 4720 and the second conductive sheet 4820 have an "L"-shaped structure. One end of the first conductive sheet 4720 is electrically connected to the printing screen 472, and the other end is electrically connected to the circuit assembly 80. One end of the second conductive sheet 4820 is electrically connected to the lamp holder 482, and the other end is electrically connected to the circuit assembly 80, so that the circuit assembly 80, located in different chambers, can supply power to the screen assembly 47 and the light source assembly 48. This method of separating the circuit assembly 80 from the screen assembly 47 and the light source assembly 48 can avoid the circuit assembly 80 generating high temperatures during operation, which would affect the normal operation of the screen assembly 47 and the light source assembly 48.

[0090] Specifically, the circuit assembly 80 includes a circuit board 81 and a third conductive plate 82. The circuit board 81 is mounted on the bottom wall of the heat dissipation cavity 413, and the third conductive plate 82 extends along the second direction Y to near the wiring space 417. There are two third conductive plates 82. One end of the third conductive plate 82 is electrically connected to the circuit board 81, and the other end is electrically connected to the first conductive plate 4720. The other third conductive plate 82 is electrically connected to the circuit board 81, and the other end is electrically connected to the second conductive plate 4820.

[0091] In this embodiment, the bottom wall of the heat dissipation cavity 413 is provided with a plurality of heat dissipation fins 414. The heat dissipation fins 414 are made of thermally conductive material and are thermally coupled to the base 41, enabling the heat generated by the base 41 to be transferred to the heat dissipation fins 414. The plurality of heat dissipation fins 414 are arranged parallel to each other and spaced apart, so as to form an airflow channel 415 between any two adjacent heat dissipation fins 414. When cold air flows through the airflow channel 415, the cold air will carry away the heat on the heat dissipation fins 414 that form the airflow channel 415.

[0092] Multiple heat dissipation fins 414 are arranged around the circuit assembly 80 to improve the heat dissipation effect of the circuit assembly 80. For example, the multiple heat dissipation fins 414 are divided into two groups along the third direction X, and the two groups of heat dissipation fins 414 are arranged at intervals, with the circuit assembly 80 located between the two groups of heat dissipation fins 414.

[0093] The airflow channel 415 extends parallel to the third direction X. One end of the airflow channel 415 passes through the base 41 along the third direction X, and the other end of the airflow channel 415 is equipped with a fan 416. The fan 416 is mounted on the base 41 and is a centrifugal fan. The air inlet of the fan 416 is positioned along the third direction X towards one end of the airflow channel 415, and the air outlet of the fan 416 is positioned downwards along the first direction Z, so that the hot airflow formed by carrying away heat from the heat dissipation fins 414 is discharged from the bottom of the container assembly 100. Furthermore, along the third direction X, a heat dissipation port 492 is provided on one side of the heat dissipation base 49. The heat dissipation port 492 extends from the outer surface of the heat dissipation base 49 to its inner cavity, so that cold air outside the heat dissipation base 49 can enter the airflow channel 415 through the heat dissipation port 492, thereby carrying away the heat from the heat dissipation fins 414 and completing the heat dissipation of the base 41.

[0094] Specifically, the bottom end of the base 41 is provided with a base plate 412, which is detachably connected to the base 41, thereby sealing the heat dissipation cavity 413. The base plate 412 is provided with an air outlet 4120, which penetrates the base plate 412 along the first direction Z, and is positioned towards the air outlet end of the fan 416, so that the fan 416 can guide the hot air leaving the airflow channel 415 to be discharged from the air outlet 4120.

[0095] like Figure 11 As shown, and see also Figure 1 This embodiment also provides an additive manufacturing method 200, applied to the above-mentioned additive manufacturing equipment 100. The additive manufacturing method 200 includes the following steps:

[0096] S1. Level the platform 10.

[0097] In this step, the construction platform 10 is leveled to ensure that the forming surface P5 is in a horizontal state.

[0098] S2. Add printing consumables into container assembly 40.

[0099] In this step, the printing consumables can be photopolymer resin, etc.

[0100] S3. Move one of the container component 40 and the building platform 10 toward the side closer to the other until the container component 40 is aligned with the building platform 10.

[0101] In this step, the moving component 30 moves the container component 40 toward one side of the construction platform 10 until the top surface of the material frame 42 of the container component 40 abuts against the limiting surface P2, at which point the moving component 30 stops moving. At this time, a forming cavity is formed between the forming surface P5 and the top surface of the release film 43, and the height of the forming cavity is the thickness of the first printed layer.

[0102] S4. Perform the printing action.

[0103] In this step, the pattern of the printing screen 472 of the screen assembly 47 is adjusted according to the structure of the printing layer that needs to be printed, and the light source assembly 48 is controlled to emit light toward the screen assembly 47. After passing through the screen assembly 47, the light shines on the photopolymer resin in the molding cavity, so that it is cured and adhered to the molding surface P5.

[0104] S5. After each printing layer is completed, control one of the container assembly 40 and the building platform 10 to move a corresponding distance away from the other according to the preset layer thickness.

[0105] In this step, after printing one layer, the moving component 30 drives the container component 40 to move a corresponding distance away from the building platform 10 according to the preset layer thickness, so as to continue to form a new layer on the surface of the newly formed layer, and repeat the above action until the entire printed part is printed.

[0106] The specific embodiments of this application have been described above with reference to the accompanying drawings. However, those skilled in the art will understand that various changes and substitutions can be made to the specific embodiments of this application without departing from the scope of this application. All such changes and substitutions fall within the scope defined by this application.

Claims

1. A container component, characterized in that, include: The base has a mounting slot on one side; A material frame is provided around the opening of the mounting groove, and the material frame is detachably connected to the base; A screen assembly is disposed in the mounting slot, and the screen assembly is at least partially clamped between the frame and the base; A release film is disposed on the side of the screen assembly near the frame, and the release film is at least partially clamped between the frame and the screen assembly.

2. The container assembly as claimed in claim 1, characterized in that, The inner circumferential wall of the mounting groove is provided with a support protrusion, which is configured to support the screen assembly, and the screen assembly is clamped between the support protrusion and the material frame.

3. The container assembly as claimed in claim 2, characterized in that, The container assembly further includes a locking structure that movably abuts against one end of the material frame away from the base, the locking structure being configured to press the material frame against the screen assembly.

4. The container assembly as claimed in claim 3, characterized in that, The locking structure includes a rotating member and a supporting member. One end of the rotating member is rotatably connected to the base, and the supporting member is connected to the other end of the rotating member. The supporting member can be rotated to support the end of the material frame away from the base.

5. The container assembly as claimed in claim 2, characterized in that, The container assembly also includes a heat sink disposed around the outer peripheral surface of the base and detachably connected to the base, the heat sink being configured to dissipate heat from the screen assembly.

6. The container assembly as claimed in claim 5, characterized in that, The screen component includes: The screen base is supported by the supporting protrusion; A printing screen is located on the side of the screen base away from the supporting protrusion; A protective film is disposed on the side of the printing screen away from the screen substrate, and the material frame abuts against the protective film.

7. The container assembly as claimed in claim 6, characterized in that, The outer contour of the protective film extends beyond the outer contour of the frame. The inner circumferential surface of the heat sink is provided with a pressing protrusion. The pressing protrusion is located on the side of the screen assembly away from the supporting protrusion, and the pressing protrusion abuts against the portion of the protective film that extends beyond the frame.

8. The container assembly as claimed in claim 7, characterized in that, The container assembly further includes a first sealing ring, and a first sealing groove is formed on the side of the pressing protrusion near the protective film. The first sealing ring is disposed in the first sealing groove and is clamped between the pressing protrusion and the portion of the protective film that extends beyond the printing screen.

9. The container assembly as claimed in claim 5, characterized in that, The outer contour of the release film extends beyond the outer contour of the material frame, the material frame is arranged around the release film, and the material frame and the release film together form a material groove.

10. The container assembly as claimed in claim 5, characterized in that, The release film includes a film portion and a frame portion, the frame portion being disposed around the outer peripheral surface of the film portion, and the frame portion being integrally formed with the film portion; The frame portion is clamped between the material frame and the base, and the membrane portion and the inner peripheral wall of the material frame form a material trough.

11. The container assembly as claimed in claim 9, characterized in that, The container assembly further includes a first pressure ring and a second pressure ring, which are arranged around the outer peripheral surface of the material frame, with the first pressure ring and the second pressure ring spaced apart, and the frame portion of the release film clamped between the first pressure ring and the second pressure ring.

12. The container assembly as claimed in claim 11, characterized in that, The inner circumferential surface of the heat sink is provided with a pressing protrusion. The pressing protrusion is located on the side of the screen assembly away from the supporting protrusion, and the pressing protrusion supports the second pressure ring. The material frame abuts against the first pressure ring on the side away from the second pressure ring.

13. The container assembly as claimed in claim 11, characterized in that, The outer circumferential surface of the material frame is provided with a second sealing groove, and the container assembly further includes a second sealing ring. The second sealing ring is disposed in the second sealing groove and is clamped between the outer circumferential surface of the material frame and the inner circumferential surface of the first pressure ring.

14. The container assembly as claimed in claim 1, characterized in that, The container assembly also includes a light source assembly, which is disposed in the mounting groove and located on the side of the screen assembly away from the material frame. The light source assembly is detachably connected to the base.

15. The container assembly as claimed in claim 14, characterized in that, The container assembly also includes a circuit assembly. A heat dissipation cavity is provided at the end of the base away from the material frame. The circuit assembly is disposed in the heat dissipation cavity and is electrically connected to the screen assembly and the light source assembly.

16. An additive manufacturing apparatus, characterized in that, The system includes a building platform and a container component as described in any one of claims 1 to 15, wherein one of the building platform and the container component is movable relative to the other along a first direction.

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