Substrate assembly and three-dimensional printing equipment

Abstract

The utility model provides a substrate assembly and three-dimensional printing equipment. The substrate assembly according to the utility model comprises a substrate main body; the bearing plate is arranged on the supporting part of the substrate main body; and the limiting piece is detachably connected to the bearing plate and used for pressing the film tightening element or the film covering element. According to the substrate assembly provided by the utility model, the adaptability and interchangeability of the substrate assembly are improved.

Description

Technical Field

[0001] The utility model relates to the field of 3D printing, and particularly to a substrate assembly and a 3D printing device. Background Art

[0002] 3D printing technology manufactures three-dimensional entities in a layer-by-layer stacking manner according to the three-dimensional model data of an object. 3D printing technology can overcome the special structural obstacles that cannot be achieved by current traditional machining and realize the simplified production of arbitrarily complex structural components.

[0003] Currently, in 3D printing technologies such as digital light processing (DLP) printing and liquid crystal display (LCD) printing, a material tray of a 3D printing device is usually used to carry printing materials (such as photosensitive resin), the forming platform is moved to immerse in the printing materials in the material tray, and then light is projected onto the printing materials between the release film of the material tray and the forming platform, so as to cure a layer of printing materials. Layers are cured in this way to form the final required printed object.

[0004] In the printing process such as the above, the material tray is usually placed or installed on the substrate assembly, and the substrate assembly is installed on the frame of the 3D printing device. However, currently, various material trays may be used to adapt to different printed objects and different printing processes, such as a film-covered material tray, a film-stretched material tray, and an inflated material tray. Since different types of material trays have different structures, different types of material trays may need to be adapted to different substrate assemblies.

[0005] In some existing solutions, a floating material tray structure is formed by a film-covered material tray and four springs on the substrate. At this time, if the film-covered material tray is replaced with a film-stretched material tray, structures such as springs need to be disassembled.

[0006] In actual assembly, disassembling and assembling the substrate assembly is not conducive to the work efficiency of operators or maintenance personnel, and increases the possibility of other problems caused by assembly.

[0007] The manufacturing process of the film-covered material tray includes mixing, leveling, baking, film pasting, etc., and the production efficiency and product qualification rate are relatively low; in the existing floating material tray structure, the light path dust prevention cannot be effectively carried out in the spring movement gap part. When there is a lot of dust in the customer's printing environment, the maintenance workload of light path dust removal needs to be increased, resulting in reduced printing accuracy and production interruption, affecting the overall production efficiency. Summary of the Utility Model

[0008] At least for the consideration of improving the adaptability and interchangeability of the substrate assembly, the utility model provides a substrate assembly of a 3D printing device.

[0009] The substrate assembly according to the present utility model includes: a substrate body; a carrier plate disposed on the support portion of the substrate body; and a limiting member detachably connected to the carrier plate and configured to press a film stretching element or a film covering element.

[0010] In some embodiments, the substrate assembly further includes a covering member partially located on the substrate body and the carrier plate.

[0011] In some embodiments, the substrate assembly further includes a cover mounted to the carrier plate.

[0012] In some embodiments, the cover includes a recess.

[0013] In some embodiments, an NFC function module is provided on the carrier plate.

[0014] The present utility model also provides a 3D printing device, which includes the aforementioned substrate assembly.

[0015] In some embodiments, the 3D printing device further includes a film stretching element or a film covering element.

[0016] In some embodiments, the 3D printing device further includes a floating assembly, which includes: a connecting member connected to the carrier plate; a guiding column fixed to the substrate body; an elastic element sleeved on the guiding column; and a bottom plate connected to the substrate body.

[0017] In some embodiments, a gravity sensor is provided on the bottom plate.

[0018] In some embodiments, the 3D printing device further includes a film stretching material tray, a film covering material tray or a pulse material tray

[0019] The beneficial effects of the present utility model are as follows: A multifunctional substrate assembly is provided, which can adaptively lock a film stretching element or a film covering element through a limiting member, and an operator can easily release or remove the limiting member to replace the film stretching element or the film covering element to adapt to different types of material trays (such as a film stretching material tray, a film covering material tray or a pulse material tray).

[0020] The beneficial effects of the present utility model also lie in: A 3D printing device is provided, which can adapt to different material trays through a floating assembly. For example, assembly problems caused by tolerances of the same or different types of material trays will be overcome by the covering member or the floating assembly. Description of the Drawings

[0021] The present utility model will be explained in more detail below with reference to the accompanying drawings using preferred, non-limiting exemplary embodiments.

[0022] Figure 1 A substrate assembly according to an embodiment is shown.

[0023] Figure 2 Shows an exploded view of a substrate assembly according to an embodiment.

[0024] Figure 3 Shows the substrate body of the substrate assembly according to an embodiment.

[0025] Figure 4 Shows the cover of the substrate assembly according to an embodiment.

[0026] Figure 5 Shows the lid of the substrate assembly according to an embodiment.

[0027] Figure 6 Shows a cross-sectional view of the substrate assembly, which shows the limiting member.

[0028] Figure 7 Shows a cross-sectional view of the substrate assembly, which shows the floating assembly. Detailed implementation

[0029] In order to enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the solution in the embodiments in conjunction with the drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0030] Figure 1 Shows a substrate assembly according to an embodiment. As Figure 1 shown, the tray 800 is installed on the substrate assembly 100. The locking assembly 900 is installed on the substrate assembly 100 and locks the tray 800 to prevent the tray 800 from moving relative to the substrate assembly 100 during the printing process.

[0031] Figure 2 Shows an exploded view of a substrate assembly according to an embodiment. As Figure 2 shown, the substrate assembly 100 includes a substrate body 110, which is used to be installed on the frame of a three-dimensional printing device.

[0032] Figure 3 Shows the substrate body of the substrate assembly according to an embodiment. As Figure 2-3As shown, the substrate assembly 100 further includes a carrier plate 120, which can be disposed on the substrate body 110. In some embodiments, when the substrate body 110 and the carrier plate 120 are separate components, a cover member 400 can be provided to cover the installation gap between the substrate body 110 and the carrier plate 120, which helps prevent, for example, dust or similar particles from entering the installation gap. The cover member 400 can be partially located above the substrate body 110 and the carrier plate 120. The cover member 400 can be, for example, a tape, a rubber ring, etc. In some embodiments, the substrate body 110 and the carrier plate 120 are integrally formed.

[0033] In some embodiments, the substrate assembly 100 further includes a cover 140, which can be installed on the carrier plate 120 to prevent printing materials such as resin from flowing into the lower part of the substrate assembly 100. In some embodiments, the cover 140 includes a recess 142, which is conducive to, for example, temporarily accommodating the resin that accidentally flows out of the material tray 800, reducing the risk of the resin flowing out from the circumferential edge of the cover 140 (for example, flowing to the optical mechanism below the substrate assembly 100). The recess 142 can extend along the circumference of the cover 140 or can be disposed only in a partial area of the cover 140. In some embodiments, the cross-sectional profile of the recess 142 can have a shape such as a "concave" shape, a "U" shape, or a "V" shape. In some embodiments, the cover 140 further includes a material outlet 144, and the printing material (such as the aforementioned resin) can flow out from the recess 142 through the material outlet 144. The material outlet 144 can be equipped with a pipe or a container to store or receive the printing material from the cover 140 or the recess 142. In some embodiments, the cover 140 and the carrier plate 120 are separate components. In some embodiments, the cover 140 and the carrier plate 120 are integrally formed.

[0034] Figure 4 A cross-sectional view of the substrate assembly in an assembled state according to an embodiment is shown. As Figure 4 shown, the carrier plate 120 is disposed above the support portion of the substrate body 110, and the cover 140 is disposed on the first shoulder 122 of the carrier plate 120.

[0035] The film tensioning element 200 can be placed on the first shoulder 122 of the carrier plate 120 to tension the release film 810 of the subsequent placed material tray 800. The film tensioning element 200 can be restricted or locked in place by a limiting member 200, thereby providing a stable tensioning effect for the release film 810 of the material tray 800 (optimally as Figure 6 shown). The limiting member 200 (for example, in the form of a pressing block) can be fixed to the cover 140 or the carrier plate 120 by fasteners such as screws. The film tensioning element 200 is made of at least partially transparent material, such as glass, etc.

[0036] In some embodiments, the carrier plate 120 further has a second shoulder 124, and the light-transmitting glass 300 can be disposed on the second shoulder 124 and restricted or locked in place by the pressing block 320.

[0037] The shapes of the film stretching element 200 and the limiting member 220, and the light-transmitting glass 300 and the pressing block 320 can be matched with each other. For example, the film stretching element 200 is a plate-shaped element with inclined edges, and the limiting member 220 is a block-shaped element with inclined edges, and the inclined edges of the film stretching element 200 are adapted to the inclined edges of the limiting member 220. The light-transmitting glass 300 is, for example, a plate-shaped element, and the pressing block 320 is a block-shaped element placed on the upper surface of the light-transmitting glass 300.

[0038] To achieve the film stretching function, the upper surface of the film stretching element 200 can be higher than the upper surface of the cover 140.

[0039] For the relevant introduction of the film stretching element or the film stretching tray, reference can also be made to Document CN114311662A and CN109454867A, the entire contents of which are incorporated herein by reference. For the relevant introduction of the pulse tray, reference can be made to Document CN117656470A, the entire contents of which are incorporated herein by reference.

[0040] The substrate assembly 100 can also be applicable to the film covering tray. For example, the upper surface of the element (film covering element) 200 is flush with the upper surface of the cover 140. The limiting member 200 can also be used to press the film covering element 200. For example, the limiting member 200 has an L-shaped cross-section.

[0041] Reference Figure 5 , according to some embodiments, the 3D printing device further includes a floating assembly 500. The floating assembly 500 includes a connecting member 510, a guiding column 520, a spring 530, and a bottom plate 540. The connecting member 510 can be connected to the carrier plate 120 by fasteners such as bolts, so that the carrier plate 120 can move together with the connecting member 510. The spring 530 is sleeved on the guiding column 520. The guiding column 520 is fixed to the substrate body 110. When the carrier plate 120 pushes the connecting member 510 to move towards the bottom plate 540 connected to the substrate body 110, the spring 530 will be compressed. The function of the floating assembly 500 is that when performing relevant locking operations on the tray 800, the carrier plate 120 can continuously apply pressure to the tray 800 through the floating assembly 500 (especially its spring 530 or similar elastic elements) to achieve locking.

[0042] In some alternative embodiments, the floating assembly 500 omits the connecting member 510 and is directly connected to the carrier plate. Specifically, the floating assembly 500 can include a guiding column 520, a spring 530, and a bottom plate 540, and has Figure 5 a similar configuration to the illustrated embodiment.

[0043] A gravity sensor can be arranged on the bottom plate 540. In some embodiments, an electromagnet 600 fixed to the carrier plate 120 is also provided. By energizing and de-energizing, the locking of the carrier plate 120 and the substrate body 110 can be realized, ensuring accurate positioning during exposure. When starting printing, the carrier plate is guided by the guide posts and the spring is compressed. When the compression reaches a certain position, the software judges, according to relevant logic, that the exposure position zero point has been reached and the first layer of exposure can be carried out. When the exposure is completed for a thickness of about 1 mm that does not require high precision, the electromagnet magnetically locks the carrier plate and the substrate body, which can ensure the accurate thickness of the subsequent layer models during printing.

[0044] In some embodiments, an NFC function module is provided on the carrier plate 120 to protect the NFC tag and the antenna board. The antenna board can identify the serial number of the assembled film stretching or film clamping assembly. After each version is printed by the device, the software can write the number of printed layers into the NFC tag. When the expected service life is about to be reached, relevant prompts will be given at the user interface (such as the display). Through this function module, the service lives of the film stretching and the pulse material tray can be controlled.

[0045] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art of this technology, without departing from the principle of the present invention, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A substrate assembly, characterized in that: The substrate assembly comprises: substrate body; a carrier plate disposed on the support portion of the substrate body; and The limiting member is detachably connected to the carrying plate and is configured to press the film-stretching element or the film-covering element.

2. The substrate assembly according to claim 1, characterized in that: The substrate assembly further includes a cover member, which is partially located on the substrate body and the carrier plate.

3. The substrate assembly according to claim 1, characterized in that: The base plate assembly also includes a cover mounted to the carrier plate.

4. The substrate assembly according to claim 3, characterized in that: The cover includes a recess.

5. The substrate assembly according to claim 1, characterized in that: The carrier board is provided with an NFC function module.

6. A three-dimensional printing device, characterized in that: The three-dimensional printing device comprises a substrate assembly according to any one of claims 1 to 5.

7. The three-dimensional printing device according to claim 6, characterized in that: The three-dimensional printing device also includes a film stretching element or a film covering element.

8. The three-dimensional printing device according to claim 6, characterized in that: The three-dimensional printing device further includes a floating component, wherein the floating component includes: a connecting member connected to the carrier plate; a guide post fixed to the base plate body; an elastic element sleeved on the guide post; and A bottom plate is connected to the base body.

9. The three-dimensional printing device according to claim 8, characterized in that: A gravity sensor is arranged on the bottom plate.

10. The three-dimensional printing device according to claim 6, characterized in that: The three-dimensional printing device also includes a stretch film tray, a coated film tray or a pulse tray.

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