Photocuring 3D printer

Abstract

The utility model discloses a photocuring 3D printer, which relates to the technical field of 3D printing and comprises a base. The resin tank is arranged on the base, and the resin tank is used for accommodating a resin material; the lifting assembly is arranged on the base; the printing platform is arranged above the resin tank, and the lifting assembly is in driving connection with the printing platform and drives the printing platform to ascend and descend; and the leveling assembly comprises at least one gasket, and the gasket is arranged between the output end of the lifting assembly and the printing platform so that the printing platform can be kept in a horizontal state. According to the technical scheme provided by the utility model, the printing platform can be leveled conveniently, and the printing quality is improved.

Description

Photopolymer 3D printer Technical Field

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

[0002] Photopolymer 3D printing is a rapid prototyping technology that utilizes photosensitive resin to undergo a curing reaction under light of a specific wavelength, solidifying liquid resin layer by layer into a three-dimensional object. A photopolymer printer includes a printing platform and a resin tank. The printing platform moves along the Z-axis. During the printing process, the printing platform needs to maintain precise parallelism and an appropriate distance from the bottom surface of the resin tank. If the printing platform is uneven, it will result in uneven cured layer thickness, or even defects on the model surface. It may also cause the model to fail to adhere to the printing platform, resulting in detachment and affecting print quality. Summary of the Invention

[0003] The main purpose of this invention is to propose a photopolymer 3D printer designed to level the printing platform.

[0004] To achieve the above objectives, the present invention proposes a photopolymerization 3D printer, comprising:

[0005] Base;

[0006] A resin tank is disposed on the base, and the resin tank is used to hold resin material.

[0007] A lifting assembly is located on the base;

[0008] A printing platform is positioned above the resin tank; the lifting assembly is driven by the printing platform and drives the printing platform to move up and down; and

[0009] The leveling assembly includes at least one shim disposed between the output end of the lifting assembly and the printing platform to keep the printing platform horizontal.

[0010] In one embodiment, the photopolymer 3D printer further includes a mounting assembly, the mounting assembly comprising:

[0011] A fixed module is provided at the output end of the lifting assembly, and the fixed module is arranged opposite to the resin tank;

[0012] Support legs are located at the four corners of the fixed module on the side facing the printing platform and extend toward the printing platform; gaskets are located between the support legs and the printing platform; and adjusting bolts pass through the gaskets and connect the support legs and the printing platform.

[0013] In one embodiment, a limiting groove is provided on the side of the printing platform away from the resin tank, and the gasket is disposed in the limiting groove.

[0014] In one embodiment, the photopolymer 3D printer further includes a connecting component disposed at the output end of the lifting component, and the fixing module includes:

[0015] A support plate is horizontally positioned, and the support legs are mounted on the side of the support plate facing the printing platform;

[0016] The mounting base is located on the side of the support plate away from the printing platform. The mounting base has a mounting groove on the side facing the lifting assembly. The end of the connecting assembly away from the lifting assembly is inserted into the mounting groove and fixedly connected to the mounting base.

[0017] In one embodiment, the connection component includes:

[0018] A connecting plate is installed at the output end of the lifting assembly;

[0019] A connecting part is provided on the connecting plate;

[0020] A pressure tongue is located at the end of the connecting portion away from the connecting plate, and the pressure tongue is inserted into the mounting groove.

[0021] In one embodiment, the mounting base has a first connecting hole at its top, and the pressure tongue has a second connecting hole corresponding to the first connecting hole. The first connecting hole and the second connecting hole are fastened together by fasteners.

[0022] In one embodiment, the fastener is configured as a screw having a gripping portion located at the end of the screw away from the pressure tongue.

[0023] In one embodiment, the top of the mounting base is provided with a connecting groove, which communicates with the first connecting hole and extends to the opening of the mounting groove.

[0024] In one embodiment, a stepped structure is formed between the pressure tongue and the connecting portion, and the stepped structure abuts and limits the movement against the periphery of the mounting groove.

[0025] In one embodiment, the photopolymer 3D printer further includes a light source assembly disposed on the base and located below the resin tank, the light source assembly being used to provide a light source for curing the resin.

[0026] In this invention, the 3D printer includes a base with a resin tank and a lifting assembly on it. The lifting assembly is connected to a printing platform, which moves up or down to move closer to or further away from the resin tank. To ensure the printing platform and resin tank remain relatively parallel, a leveling assembly is provided between the output end of the lifting assembly and the printing platform. The leveling assembly includes shims. By adjusting the thickness, position, and number of shims, the levelness of the printing platform can be adjusted, ensuring uniform gaps between the printing platform and the resin tank. This guarantees uniform curing thickness of each layer of photosensitive resin, reduces surface defects caused by uneven curing thickness, improves print quality, ensures printing process stability, and reduces the risk of printing failure. Furthermore, the leveling assembly, by using shims, allows for fine-tuning of the printing platform's levelness. The number, thickness, and position of the shims are not limited and can be replaced or adjusted according to actual deviations to adapt to different printing needs. Worn or damaged shims can be easily replaced, reducing maintenance costs. The assembly is also easy to install and adjust, reducing operational complexity. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 is a structural schematic diagram of an embodiment of the photopolymerization 3D printer provided by this utility model;

[0029] Figure 2 is a schematic diagram showing the connection between the installation components and the printing platform provided by this utility model;

[0030] Figure 3 is a schematic diagram of the connection between the installation component and the connection component provided by this utility model;

[0031] Figure 4 is an exploded view of the connection between the installation component and the connection component provided by this utility model.

[0032] Explanation of icon numbers:

[0033] 100. Base;

[0034] 200. Resin tank;

[0035] 300. Lifting assembly;

[0036] 400. Printing platform; 410. Limiting groove;

[0037] 500, Leveling component; 510, Gasket; 511, Through hole; 512, Connecting groove;

[0038] 600. Mounting component; 610. Fixing module; 611. Support plate; 612. Mounting base; 6121. Mounting slot; 6122. First connecting hole; 6123. Connecting slot; 620. Support leg;

[0039] 700, Connecting component; 710, Connecting plate; 720, Connecting part; 730, Pressure tongue; 731, Second connecting hole; 740, Fastener; 741, Grip part.

[0040] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0042] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0044] Photopolymer 3D printing is a rapid prototyping technology that utilizes photosensitive resin to undergo a curing reaction under light of a specific wavelength, solidifying liquid resin layer by layer into a three-dimensional object. A photopolymer printer includes a printing platform and a resin tank. The printing platform moves along the Z-axis. During printing, the printing platform needs to maintain precise parallelism and an appropriate distance from the bottom surface of the resin tank. If the printing platform is uneven, the cured layer thickness will be uneven, and defects may even appear on the model surface. It may also cause the model to fail to adhere to the printing platform, resulting in detachment and affecting print quality. This invention proposes a photopolymer 3D printer that uses a leveling component to level the printing platform, preventing platform tilt from affecting print quality.

[0045] Please refer to Figure 1. In one embodiment of this utility model, the photopolymerization 3D printer includes:

[0046] Base 100;

[0047] A resin tank 200 is provided on the base 100 and is used to hold resin material.

[0048] The lifting assembly 300 is located on the base 100;

[0049] A printing platform 400 is positioned above the resin tank 200. A lifting assembly 300 is driven to and drives the printing platform 400 to rise and fall.

[0050] The leveling assembly 500 includes at least one shim 510, which is disposed between the output end of the lifting assembly 300 and the printing platform 400 to keep the printing platform 400 in a horizontal state.

[0051] In this invention, the 3D printer includes a base 100, on which a resin tank 200 and a lifting assembly 300 are mounted. The lifting assembly 300 is connected to a printing platform 400, which moves up or down, allowing the printing platform 400 to move closer to or further away from the resin tank 200. To ensure that the printing platform 400 and the resin tank 200 remain relatively parallel, a leveling assembly 500 is provided between the output end of the lifting assembly 300 and the printing platform 400. The leveling assembly 500 includes shims 510. By adjusting the thickness, position, and number of shims 510, the levelness of the printing platform 400 can be adjusted. The gaps between the printing platform 400 and the resin tank 200 are consistent throughout, ensuring uniform curing thickness of each layer of photosensitive resin. This reduces surface defects caused by uneven curing thickness, improves print quality, ensures printing process stability, and lowers the risk of print failure. Furthermore, the leveling component 500, configured as shims 510, allows for fine-tuning of the printing platform 400's level. The number, thickness, and position of the shims 510 are not limited and can be replaced or adjusted according to actual skew conditions to adapt to different printing needs. Worn or damaged shims 510 can be easily replaced, reducing maintenance costs, and are easy to install and adjust, simplifying operation.

[0052] Specifically, the base 100, serving as the support structure for the entire 3D printer, can be made of materials such as metal, and its shape is not limited. A resin tank 200 is positioned above the base 100 to hold the photosensitive resin material. The resin tank 200 can be made of a transparent or semi-transparent material to ensure that the light source can penetrate the resin tank 200 uniformly, thereby achieving the photocuring process on the printing platform 400. To better adjust the parallelism between the printing platform 400 and the resin tank 200, a distance sensor can be installed on the top edge of the resin tank 200 to detect the distance. The distance between the printing platforms 400 can be adjusted by installing a liquid level sensor in the resin tank 200 to monitor the resin level in the tank in real time, preventing printing failure due to insufficient liquid level. A lifting assembly 300 is also installed on the base 100. The lifting assembly 300 can be a linear module, vertically positioned, driving the printing platforms 400 to rise and fall. Alternatively, the lifting assembly 300 can be a lead screw module, hydraulic cylinder, or other structures capable of linear movement; there are no restrictions on this, to ensure the printing platforms 400 remain stable during lifting. The distance between the printing platforms 400 and the resin tank 200 is adjusted by installing a liquid level sensor in the resin tank 200 to monitor the resin level in real time, preventing printing failure due to insufficient liquid level. The tops of the resin tank 200 are positioned opposite each other, and the lifting assembly 300 moves the platform 400 closer to or further away from the resin tank 200. The bottom of the printing platform 400 supports the object to be printed. Specifically, the lifting assembly 300 drives the printing platform 400 closer to the resin tank 200, and the resin in the resin tank 200 is irradiated by a light source, causing the resin to solidify on the printing platform 400. The platform rises with the printing platform 400, and the above actions are repeated, allowing the resin to solidify layer by layer on the printing platform 400, thus completing the entire printing process. An anti-stick coating can be provided on the bottom of the printing platform 400. This allows for easy separation of the cured printed parts after printing. The leveling component 500 includes shims 510, with multiple shims 510 provided. These shims 510 can be of the same thickness or different thicknesses. The height is determined based on the actual tilt of the printing platform 400, and shims 510 of appropriate thickness are used to ensure that the printing platform 400 is in a horizontal state. The shims 510 facilitate fine-tuning of the levelness, and the shims 510 can be made of high-hardness, low-deformation materials, such as hard alloys or ceramics, to ensure long-term stability.

[0053] In one embodiment, the photopolymerization 3D printer further includes a light source assembly located inside the base 100 and below the resin tank 200. The light source assembly provides light to cure the resin. The light source assembly can be a high-brightness LED or a laser to provide stable ultraviolet or visible light for curing the photosensitive resin. The wavelength of the light beam provided by the light source assembly is not limited, such as 365nm or 405nm, to adapt to different types of resins. By adjusting the light intensity and wavelength, different resin materials can be met, and different printing needs can be satisfied. LEDs and lasers have high energy efficiency, which can reduce energy consumption. They can also automatically adjust the light intensity according to actual printing needs to avoid unnecessary energy waste.

[0054] In one embodiment, the photopolymerization 3D printer also includes a housing (not shown) that covers the resin tank 200, lifting assembly 300 and printing platform 400 above the base 100. The housing can prevent dust, impurities and other external substances from entering the printer and can also prevent staff from being burned by contact with the high-temperature components inside. The housing can also block external light from entering the printer and affecting the photopolymerization process.

[0055] In an embodiment of this utility model, the photopolymerization 3D printer further includes a mounting assembly 600, which comprises:

[0056] A fixed module 610 is located at the output end of the lifting assembly 300, and the fixed module 610 is arranged opposite to the resin tank 200.

[0057] Support legs 620 are located at the four corners of the fixed module 610 on the side facing the printing platform 400 and extend toward the printing platform 400; gaskets 510 are located between the support legs 620 and the printing platform 400; and

[0058] The adjusting bolt passes through the washer 510 and connects the support leg 620 and the printing platform 400.

[0059] Referring to Figures 2 and 3, to better connect the lifting assembly 300 and the printing platform 400, a mounting assembly 600 is provided. The mounting assembly 600 includes a fixed module 610 and support legs 620. The fixed module 610 can be made of metal to ensure its strength and provide stable support during printing, preventing the printing platform 400 from shaking. The support legs 620 are located at the four bottom corners of the fixed module 610 and connect it to the printing platform 400. The fixed module 610 is connected to the output end of the lifting assembly 300, which drives the fixed module 610 to rise. The lifting mechanism, or lowering mechanism, uses the support leg 620 to raise and lower the printing platform 400. A shim 510 is positioned between the support leg 620 and the printing platform 400. Bolts pass through the support leg 620 and the shim 510 from top to bottom and are screwed onto the printing platform 400. The shim 510 allows for adjustable levelness of the printing platform 400, and different thicknesses and numbers of shims 510 can be selected based on the actual levelness of the printing platform 400 for easy adjustment. The mounting assembly 600 provides stable support to the printing platform 400, ensuring that the lifting assembly 300 does not wobble when driving the printing platform 400 to rise and fall, thereby improving print quality.

[0060] In an embodiment of this utility model, a limiting groove 410 is provided on the side of the printing platform 400 away from the resin tank 200, and a gasket 510 is disposed in the limiting groove 410.

[0061] Referring to Figure 2, the limiting groove 410 is located on the side of the printing platform 400 away from the resin tank 200 to facilitate the installation of the gasket 510 within the limiting groove 410. The limiting groove 410 provides a definite installation position for the gasket 510, ensuring that the gasket 510 can be embedded within the limiting groove 410 during installation. This prevents the gasket 510 from shifting due to external forces during printing, affecting its levelness, and also prevents damage to the gasket 510 from external forces, thus extending its service life. Furthermore, the limiting groove 410 ensures that the gasket 510 is installed consistently at each position. The shape of the limiting groove 410 can be circular, rectangular, or a combination thereof. In this embodiment, one end of the limiting groove 410 is rectangular, and the other end is semi-circular. Correspondingly, the outer circumference of the gasket 510 corresponds to the limiting groove 410, facilitating its fit against the inner wall of the limiting groove 410 to prevent misalignment of the gasket 510.

[0062] In one embodiment, referring to Figure 2, a through hole 511 is provided in the middle of the shim 510 so that the adjusting bolt can pass through the through hole 511 and be screwed into the printing platform 400. One end of the shim 510 is provided with a connecting groove 512, which communicates with the through hole 511. That is, when it is necessary to adjust the height of a corner of the printing platform 400, the shim 510 needs to be added or removed from the limiting groove 410 at that position. The setting of the connecting groove 512 allows the shim 510 to be directly inserted into the limiting groove 410 or removed from the limiting groove 410 without removing the adjusting bolt. Specifically, turning the adjusting bolt separates the support leg 620 from the limiting groove 410. If the shim 510 is added... 0. The end of the shim 510 with the connecting groove 512 can be directly inserted into the limiting groove 410. The adjusting bolt can be slid from the connecting groove 512 to the through hole 511. If it is necessary to reduce the number of shims 510 in the limiting groove 410, the shim 510 can be removed directly. The adjusting bolt can be slid along the length of the connecting groove 512 until the shim 510 is removed. After adjustment, the adjusting bolt can be turned in the opposite direction so that the support leg 620 abuts against the uppermost shim 510 in the limiting groove 410. The setting of the connecting groove 512 allows the number or thickness of the shims 510 to be adjusted without the installation component 600 being separated from the printing platform 400, reducing errors and making the operation simpler and more convenient.

[0063] In one embodiment, as shown in FIG2, the top of the printing platform 400 is a central protrusion, and the two sides are lower than the central slope. The bottom wall of the limiting groove 410 is parallel to the bottom of the printing platform 400. The side wall of the limiting groove 410 near the central protrusion is higher than the side wall of the limiting groove 410 near the side, and the side near the side of the printing platform 400 is connected to the top of the printing platform 400, which facilitates the placement and removal of the pad 510.

[0064] In an embodiment of this utility model, the photopolymerization 3D printer further includes a connecting component 700, which is disposed at the output end of the lifting component 300, and the fixing module 610 includes:

[0065] The support plate 611 is horizontally positioned, and the support leg 620 is installed on the side of the support plate 611 facing the printing platform 400;

[0066] Mounting base 612 is located on the side of support plate 611 away from printing platform 400. Mounting base 612 has mounting groove 6121 on the side facing lifting assembly 300. The end of connecting assembly 700 away from lifting assembly 300 is inserted into mounting groove 6121 and fixedly connected to mounting base 612.

[0067] Referring to Figures 2 and 3, the fixed module 610 includes a horizontally arranged support plate 611, a mounting base 612 and a support leg 620 respectively positioned above and below the support plate 611, i.e., the support leg 620 faces the printing platform 400, and the mounting base 612 is away from the printing platform 400. The mounting base 612 is provided with a mounting groove 6121, which is used to insert the connecting component 700 and drive the lifting component 300 through the connecting component 700. This ensures that the entire mounting component 600 and the printing platform 400 remain stable during lifting and lowering, reducing shaking or tilting caused by loose connections. The connecting component 700 is inserted into the mounting groove 6121 to achieve a detachable connection between the lifting component 300 and the mounting component 600, making the installation and disassembly process simple and allowing for quick maintenance or replacement, ensuring the levelness and stability of the printing platform 400.

[0068] In an embodiment of this utility model, the connecting component 700 includes:

[0069] Connector plate 710 is installed at the output end of lifting assembly 300;

[0070] A connecting part 720 is provided on a connecting plate 710;

[0071] A pressure tongue 730 is provided at the end of the connecting portion 720 away from the connecting plate 710, and the pressure tongue 730 is inserted into the mounting groove 6121.

[0072] Referring to Figures 3 and 4, the connecting assembly 700 includes a connecting plate 710, which is installed at the output end of the lifting assembly 300. To ensure the stability of the lifting process, the connecting plate 710 can be made of metal materials such as steel or aluminum alloy, which have high strength. The connecting plate 710 is vertically arranged, and the connecting part 720 is located on the side of the connecting plate 710 away from the lifting assembly 300. The pressure tongue 730 is located at the end of the connecting part 720 away from the connecting plate 710. The pressure tongue 730 is flat, which facilitates the insertion of the pressure tongue 730 into the mounting groove 6121 to connect with the fixed module 610. By inserting the pressure tongue 730 into the mounting groove 6121, the connecting assembly 700 is ensured to be tightly connected with the mounting base 612, preventing the printing platform 400 from loosening during the lifting process. The setting of the connecting assembly 700 can ensure that the fixed module 610 is subjected to uniform force during the lifting process, avoiding the printing platform 400 from tilting.

[0073] In an embodiment of this utility model, the top of the mounting base 612 is provided with a first connecting hole 6122, and the pressure tongue 730 has a second connecting hole 731 corresponding to the first connecting hole 6122. The first connecting hole 6122 and the second connecting hole 731 are fastened together by a fastener 740.

[0074] Referring to Figures 2 and 4, a first connection hole 6122 is provided on the top of the mounting base 612. A second connection hole 731 is provided at one end of the tongue 730 that is inserted into the mounting groove 6121. When the tongue 730 is inserted into the mounting groove 6121, the first connection hole 6122 corresponds to the second connection hole 731. A fastener 740 is inserted from above the mounting base 612. The fastener 740 passes through the first connection hole 6122 and the second connection hole 731 in sequence and connects with the second connection hole 731. This allows the tongue 730 and the fastener 740 to clamp the top of the mounting groove 6121, thereby fixing the mounting base 612 to the connecting component 700. This allows the lifting component 300 to be driven to connect with the mounting component 600 through the connecting component 700, thereby driving the printing platform 400 to lift. The fastener 740 also improves the stability of the connection between the connecting component 700 and the mounting component 600.

[0075] In an embodiment of the present invention, the fastener 740 is configured as a screw, the screw having a gripping portion 741, the gripping portion 741 being located at the end of the screw away from the pressure tongue 730.

[0076] Referring to Figure 4, the fastener 740 is configured as a screw. After being inserted into the first connecting hole 6122, it is screwed into the second connecting hole 731 and screwed onto the pressure tongue 730 to achieve a fixed connection between the connecting component 700 and the fixing component. The end of the fastener 740 away from the pressure tongue 730 is a gripping part 741, which is located above the mounting base 612, that is, outside the mounting groove 6121. The gripping part 741 and the pressure fit clamp the top plate of the mounting base 612. The outer periphery of the gripping part 741 is serrated. When it is necessary to disassemble the connecting component 700 and the mounting component 600, the fastener 740 needs to be opened so that the fastener 740 is away from the second connecting hole 731. The serrated gripping part 741 can increase the contact area between the fastener 740 and the tool or hand, improve friction, and make it more stable when loosening or tightening the screw. It can prevent the hand from slipping when turning the gripping part 741, causing the mounting component 600 to fall off and affecting the printing quality.

[0077] In an embodiment of this utility model, the top of the mounting base 612 is provided with a connecting groove 6123, which communicates with the first connecting hole 6122 and extends to the opening of the mounting groove 6121.

[0078] Referring to Figures 2 and 4, a connecting groove 6123 communicating with the first connecting hole 6122 is also provided on the top of the mounting base 612. The connecting groove 6123 extends from the first connecting hole 6122 toward the opening of the mounting groove 6121. By twisting the grip 741, the grip 741 is loosened from the second connecting hole 731, thereby moving the fastener 740 upward. There is a certain distance between the grip 741 and the top of the mounting base 612. At this time, the mounting base 612 is released from the clamping of the grip 741 and the pressure tongue 730. The fastener 740 and the pressure tongue 730 can slide along the length direction of the connecting groove 6123, thereby completing the detachment of the mounting assembly 600. The mounting component 600 can be replaced or repaired. During reinstallation, the side of the mounting base 612 with the groove 6121 facing the pressure tongue 730 is moved towards the pressure tongue 730 until the pressure tongue 730 is inserted into the mounting groove 6121. The fastener 740 slides along the connecting groove 6123 until the first connecting hole 6122 corresponds to the second connecting hole 731. At this time, tighten the fastener 740, and the gripping part 741 and the pressure tongue 730 clamp the mounting base 612. This completes the replacement / repair of the mounting component 600 without disassembling the fastener 740. The structure is simple, the operation is convenient, the repair / replacement time is reduced, and the efficiency is improved.

[0079] In an embodiment of this utility model, a stepped structure is formed between the pressure tongue 730 and the connecting part 720, and the stepped structure abuts and limits the periphery of the groove of the mounting groove 6121.

[0080] Referring to Figure 4, the connecting part 720 extends from one side of the connecting plate 710 toward the pressure tongue 730, and the connecting part 720 is higher than the pressure tongue 730, so that a stepped structure is formed at the connection between the connecting part 720 and the pressure tongue 730. After the pressure tongue 730 is inserted into the mounting groove 6121, when the connecting part 720 at the stepped structure moves to abut and limit the connection with the edge of the groove of the mounting groove 6121, the first connecting hole 6122 corresponds to the second connecting hole 731, and then the fastener 740 is tightened. The step structure makes the connection between the mounting component 600 and the connecting component 700 more convenient.

[0081] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A photopolymer 3D printer, characterized in that, include: Base; A resin tank is disposed on the base, and the resin tank is used to hold resin material. A lifting assembly is located on the base; A printing platform is located above the resin tank, and the lifting assembly is driven to lift the printing platform. And a leveling component, including at least one shim, the shim being disposed between the output end of the lifting component and the printing platform to keep the printing platform in a horizontal state.

2. The photopolymer 3D printer as described in claim 1, characterized in that, The photopolymer 3D printer also includes an installation assembly, which includes: a fixing module located at the output end of the lifting assembly and positioned opposite to the resin tank; support legs located at the four corners of the fixing module facing the printing platform and extending toward the printing platform; a gasket located between the support legs and the printing platform; and an adjusting bolt passing through the gasket and connecting the support legs and the printing platform.

3. The photopolymer 3D printer as described in claim 2, characterized in that, A limiting groove is provided on the side of the printing platform away from the resin tank, and the gasket is disposed in the limiting groove.

4. The photopolymerization 3D printer as described in claim 2, characterized in that, The photopolymer 3D printer also includes a connecting component, which is located at the output end of the lifting component. The fixing module includes: a support plate, which is horizontally arranged, and the support leg is installed on the side of the support plate facing the printing platform; and a mounting base, which is located on the side of the support plate away from the printing platform. The mounting base has a mounting groove on the side facing the lifting component, and the end of the connecting component away from the lifting component is inserted into the mounting groove and fixedly connected to the mounting base.

5. The photopolymer 3D printer as described in claim 4, characterized in that, The connecting assembly includes: a connecting plate, installed at the output end of the lifting assembly; a connecting part, disposed on the connecting plate; and a pressure tongue, disposed at the end of the connecting part away from the connecting plate, and the pressure tongue is inserted into the mounting groove.

6. The photopolymerization 3D printer as described in claim 5, characterized in that, The mounting base has a first connection hole on its top, and the pressure tongue has a second connection hole corresponding to the first connection hole. The first connection hole and the second connection hole are fastened together by fasteners.

7. The photopolymer 3D printer as described in claim 6, characterized in that, The fastener is configured as a screw, the screw having a gripping portion located at the end of the screw away from the pressure tongue.

8. The photopolymerization 3D printer as described in claim 6, characterized in that, The top of the mounting base is provided with a connecting groove, which communicates with the first connecting hole and extends to the opening of the mounting groove.

9. The photopolymer 3D printer as described in claim 5, characterized in that, A stepped structure is formed between the pressure tongue and the connecting part, and the stepped structure abuts and limits the movement against the periphery of the groove of the mounting groove.

10. The photopolymer 3D printer according to any one of claims 1 to 9, characterized in that, The photopolymer 3D printer also includes a light source assembly, which is disposed on the base and located below the resin tank. The light source assembly is used to provide a light source to cure the resin.

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