A quick-release structure for photopolymer 3D printed parts and a photopolymer 3D printing device

Abstract

This utility model discloses a quick-release structure for photopolymer 3D printed parts and a photopolymer 3D printing device, including a molding substrate for supporting the printed parts and a rotatable disassembly plate assembled on the molding substrate. The disassembly plate has a plurality of grids arranged in parallel at intervals. The side of the molding substrate facing the resin cylinder has a plurality of clearance grooves that match the grids and are arranged in parallel. The grids are detachably inserted into the clearance grooves. When removing the part, the disassembly plate rotates relative to the molding substrate so that part of the grids protrudes out of the clearance grooves and pushes out the printed part on the molding substrate. This eliminates the need to remove the molding substrate and connector assembly and use the scraper, and also reduces the probability of damage to the printed parts and injury to the operator caused by improper cutting position.

Description

Technical Field

[0001] This utility model relates to the field of photopolymer 3D printing technology, and in particular to a quick-release structure for photopolymer 3D printed parts and a photopolymer 3D printing device. Background Technology

[0002] Photopolymer 3D printing is an additive manufacturing process that uses ultraviolet light with a wavelength of 385-405nm to cure resin layer by layer. The printed part is completely formed on the substrate and is then removed from the substrate through a part removal operation.

[0003] Currently, most part removal operations involve first removing the molding substrate containing the printed part and the connector assembly of the photopolymer 3D printer together, then placing them on the operating table. The operator then inserts a metal scraper into the gap between the printed part and the molding substrate to gradually detach the printed part from the molding substrate. However, when changing the scraper position multiple times, it is necessary to find the best entry point, which can easily cause local damage to the printed part. Moreover, the operation is cumbersome and there is a risk of the metal scraper slipping out of the operator's hand and causing injury, thus increasing the operator's labor costs and jeopardizing their personal safety. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a quick-release structure for photopolymer 3D printed parts and a photopolymer 3D printing device. When removing the part, the removal of the molding substrate and connector assembly, as well as the use of the scraper, can be omitted. This also reduces the likelihood of damage to the printed parts and injury to operators caused by improper cutting position.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] This invention provides a quick-release structure for photopolymer 3D printed parts, including a molding substrate for supporting the printed parts and a rotatable disassembly plate mounted on the molding substrate; the disassembly plate has a plurality of spaced and parallel grids, and the side of the molding substrate facing the resin cylinder has a plurality of clearance grooves that cooperate with the grids and are arranged in parallel, and the grids are detachably inserted into the clearance grooves; when removing the part, the disassembly plate rotates relative to the molding substrate, so that a portion of the grids protrudes from the clearance grooves and pushes out the printed part on the molding substrate.

[0007] Furthermore, the disassembly plate has a window for accommodating the molding substrate, the window having the grid strip, the molding substrate being located within the window, and the side of the molding substrate facing the resin cylinder forming a bearing surface for carrying the printed parts.

[0008] Furthermore, during 3D printing, the grid strip extends into the relief groove and is spaced apart from the bearing surface.

[0009] Furthermore, a bolt is provided between the molding substrate and the disassembly plate to allow the disassembly plate to be rotatably connected to the molding substrate.

[0010] Furthermore, a limiting member is provided between the molding substrate and the disassembly plate to restrict the rotation of the disassembly plate relative to the molding substrate.

[0011] Furthermore, the limiting component is an indexing spiral plunger, which is assembled on the disassembly plate; during 3D printing, one end of the indexing spiral plunger passes through the disassembly plate to abut against the molding substrate, thereby restricting the rotation of the disassembly plate relative to the molding substrate.

[0012] This utility model provides a photopolymerization 3D printing device, which includes at least the quick-release structure of the photopolymerization 3D printed part described above.

[0013] The technical solution provided by this utility model has the following beneficial effects:

[0014] When removing the part, the disassembly plate is rotated relative to the molding substrate so that part of the grid bar protrudes out of the relief groove and pushes out the printed part on the molding substrate, thereby removing the printed part from the molding substrate. Compared with the scraper method used in the prior art, this utility model can eliminate the removal of the molding substrate and connector assembly and the use of the scraper. It can also reduce the probability of damage to the printed part and injury to the operator caused by improper cutting position, and also ensure that the part removal operation is more convenient and stable. Attached Figure Description

[0015] Figure 1 The diagram shown is a schematic representation of part of the photopolymer 3D printing device in the embodiment.

[0016] Figure 2 The diagram shown is a quick-release structure of a photopolymer 3D printed part equipped with a connector assembly in the embodiment.

[0017] Figure 3 The figure shown is a first-position cross-sectional view of the quick-release structure of the photopolymer 3D printed part equipped with the connector assembly in the embodiment.

[0018] Figure 4 The image shown is a second-position cross-sectional view of the quick-release structure of the photopolymer 3D printed part equipped with the connector assembly in the embodiment. Detailed Implementation

[0019] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0021] Reference Figures 1 to 4 This embodiment provides a photopolymerization 3D printing device, including a fixed plate 1, a resin cylinder 2, a connector assembly 5, a lifting guide rail 6, and a quick-release structure for the photopolymerization 3D printed part (hereinafter referred to as quick-release structure 100). One end of the connector assembly 5 is equipped with the quick-release structure 100, and the other end is movably mounted on the lifting guide rail 6, thereby driving the quick-release structure 100 to extend into or away from the resin cylinder 2.

[0022] like Figures 2 to 4 As shown, the quick-release structure 100 of this embodiment includes a molding substrate 4 for supporting the printed part 9 and a rotatable disassembly plate 3 assembled on the molding substrate 4.

[0023] The disassembly plate 3 has a plurality of grid strips 31 arranged in parallel with spacing. The bottom surface of the molding substrate 4 facing the resin cylinder 2 has a plurality of clearance grooves 41 arranged in parallel with matching grid strips 31, and each grid strip 31 can be separably inserted into its corresponding clearance groove 41.

[0024] When removing the part, the disassembly plate 3 rotates relative to the molding substrate 4 so that a portion of the grid bar 31 protrudes out of the relief groove 41 and pushes out the printed part 9 on the molding substrate 4.

[0025] In this embodiment, the disassembly plate 3 has a window 32 for accommodating the molding substrate 4. The window 32 has a plurality of parallel grid strips 31 with spacing. The molding substrate 4 is located inside the window 32, and the bottom surface of the molding substrate 4 forms a bearing surface 42 for bearing the printed part 9. The connector assembly 5 is fixed to the top of the molding substrate 4 away from the bearing surface 42.

[0026] A plug bolt 8 is provided between the molding substrate 4 and the disassembly plate 3 so that the disassembly plate 3 is rotatably connected to the molding substrate 4. Under the action of the plug bolt 8, the entire part removal process can be made into a smooth lever movement. At the same time, the grid strip 31 of the disassembly plate 3 applies a vertically downward peeling force to the printed part 9.

[0027] A limiting member is provided between the molding substrate 4 and the disassembly plate 3 to restrict the rotation of the disassembly plate 3 relative to the molding substrate 4. Specifically, the limiting member is an indexing spiral plunger 7, which is assembled on the outer wall of the disassembly plate 3. Of course, in other embodiments, the limiting member can also be an elastic snap-fit ​​structure or an elastic bead limiting structure.

[0028] During 3D printing, the plunger end of the indexing spiral plunger 7 passes through the outer wall of the disassembly plate 3 and extends into the window 32 until it touches the molding substrate 4, thereby restricting the rotation of the disassembly plate 3 relative to the molding substrate 4. At the same time, each grid bar 31 extends into its corresponding relief groove 41 and is parallel to each other and spaced apart from the bearing surface 42. For example, there is a height difference of 2mm between each grid bar 31 and the bearing surface 42 to ensure that the printed part 9 will not stick to the grid bar 31 during the printing process.

[0029] In practice, the photopolymerization 3D printing device is started first. Under the driving action of the lifting guide rail 6, the molding substrate 4 and the disassembly plate 3 are simultaneously lowered to the bottom of the resin cylinder 2. Since there is a certain height difference between the grid 31 and the bearing surface 42, the first layer of the printed part 9 is only attached to the bearing surface 42. Until the printing is completed, the printed part 9 returns to the zero position with the molding substrate 4.

[0030] Once the printed part 9 is fully formed, there is no need to remove the molding substrate 4, the disassembly plate 3, and the connector assembly 5 as a whole. Instead, pull out the plunger end of the indexing screw plunger 7 with one hand, and rotate the disassembly plate 3 downward relative to the molding substrate 4 with the other hand. This will cause the angle between the disassembly plate 3 and the molding substrate 4 to gradually increase from zero. Simultaneously, parts of each grid bar 31 will pass through the relief groove 41 and gradually protrude from the bearing surface 42 of the molding substrate 4, thereby pushing out or lifting a part of the printed part 9. This ensures that the adhesive area between the printed part 9 and the molding substrate 4 becomes smaller and smaller during the rotation of the disassembly plate 3, until the adhesive force can no longer offset the weight of the printed part 9 or the adhesive area becomes zero, at which point it will fall freely from the molding substrate 4. At this time, the printed part 9 can be caught by hand when it falls from the molding substrate 4.

[0031] In this embodiment, a stripping plate 3 with a grid layout is used instead of the scraper of the prior art. This avoids the scraper inserting into the gap between the printed part 9 and the molding substrate 4 and other scraping actions, and also avoids damage to the printed part 9 caused by the scraper contacting the printed part 9.

[0032] In summary, when removing the part, the disassembly plate 3 is rotated relative to the molding substrate 4 so that part of the grid 31 protrudes out of the relief groove 41 and pushes out the printed part 9 on the molding substrate 4, thereby removing the printed part 9 from the molding substrate 4. Compared with the scraper-scraping method used in the prior art, the quick-release structure 100 of this embodiment can omit the removal of the molding substrate 4 and the connector assembly 5 and the use of the scraper. It can also reduce the probability of damage to the printed part 9 and injury to the operator caused by improper cutting position. It also ensures that the part removal operation is more convenient and stable, and the structure is simple and durable.

[0033] Furthermore, the disassembly plate 3 in this embodiment adopts a multi-strip layout, which can effectively avoid excessive local stress during the disassembly process, and the entire disassembly process is a smooth lever movement, thus reducing the probability of damage to the printed part 9.

[0034] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A quick release structure of a photocured 3D printed part, characterized in that: It includes a molding substrate for carrying printed parts and a rotatable disassembly plate assembled to the molding substrate. The disassembly plate has a plurality of grids arranged at intervals and side by side, and the side of the molding substrate facing the resin cylinder has a plurality of clearance grooves arranged side by side to cooperate with the grids, and the grids are detachably inserted into the clearance grooves. During part removal, the disassembly plate rotates relative to the molding substrate so that a portion of the grid bar protrudes from the clearance groove and pushes out the printed part on the molding substrate.

2. The quick release structure of photocured 3D printed part according to claim 1, characterized in that: The disassembly plate has a window for accommodating the molding substrate, the window having the grid strip, the molding substrate being located within the window, and the side of the molding substrate facing the resin cylinder forming a bearing surface for carrying the printed parts.

3. The quick-release structure of the photopolymer 3D printed part according to claim 2, characterized in that: During 3D printing, the grid strips extend into the relief grooves and are spaced apart from the bearing surface.

4. The quick-release structure of the photopolymer 3D printed part according to any one of claims 1-3, characterized in that: A bolt is provided between the molding substrate and the disassembly plate to allow the disassembly plate to be rotatably connected to the molding substrate.

5. The quick-release structure of the photopolymer 3D printed part according to claim 4, characterized in that: A limiting member is provided between the molding substrate and the disassembly plate to restrict the rotation of the disassembly plate relative to the molding substrate.

6. The quick-release structure of the photopolymer 3D printed part according to claim 5, characterized in that: The limiting component is an indexing spiral plunger, which is assembled on the disassembly plate. During 3D printing, one end of the indexing spiral plunger passes through the disassembly plate and abuts against the molding substrate to restrict the rotation of the disassembly plate relative to the molding substrate.

7. A photopolymerization 3D printing device, characterized in that: It includes at least the quick-release structure of the photopolymer 3D printed part as described in any one of claims 1-6.

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