Projection photocuring 3D printer with compact structure

Abstract

The utility model provides a projection photocuring 3D printer with a compact structure, and belongs to the field of 3D printing. The problems that a traditional 3D printer is not compact in structure, and the size of the whole machine is easily enlarged due to a residual resin recycling structure on a workbench are solved. The device comprises a motion module which is provided with a vertically sliding movable end; one end of the cantilever is connected with the movable end of the movement module, the axis of the cantilever faces any side in the left-right direction, and the other end of the cantilever is connected with the workbench; and the hanging structure is arranged on one side, close to the workbench, of the cantilever and used for hanging the detached workbench. The 3D printer is mainly used as a constituent part of the photocuring 3D printer.

Description

Technical Field

[0001] The utility model belongs to the field of 3D printing, and in particular relates to a projection light-curing 3D printer with a compact structure. Background Art

[0002] As a processing equipment, it is beneficial to design the projection light-curing 3D printer to make the structure as compact as possible and reduce the size of the equipment while ensuring that other technical indicators meet the requirements. This mainly requires solving two problems:

[0003] First of all, the overall structure of the projection light-curing 3D printer can be divided into two parts: the molding space above the projection plane and the optical path below. When the workbench moves in the molding space, it is usually driven by a motor to drive the lead screw installed on the fuselage through a cantilever structure. The lead screw, guide rail, slider and other structures that drive the cantilever together constitute the motion module. To ensure the range of motion of the workbench, the motor is usually located below the projection plane and coaxial with the lead screw. The existing design designs the motion module on the central axis of the molding space. If the cantilever is to be shortened to make the structure compact, it is often easy to interfere with the projection optical machine when the projection optical path is short. Because the optical path is fixed, the position of the projection optical machine cannot be moved. If the lead screw position is moved forward and backward to avoid the optical machine, the cantilever length and the overall size of the printer will inevitably increase, reduce the structural rigidity, reduce the printing accuracy, and increase the equipment cost.

[0004] Secondly, when the photocuring 3D printing equipment is working, the printed model and workbench are immersed in the photosensitive resin pool. After printing is completed, the workbench is tilted in situ to allow the residual resin on the workbench and the model to drip as much as possible into the resin pool. This can save photosensitive resin, reduce the pollution caused by resin spillage, and save cleaning agents during subsequent cleaning operations. However, when the workbench is tilted and suspended, if the size of the printed model is large, the projection will exceed the range of the resin pool and will not be able to receive the dripping resin. If the size of the resin pool is increased for this purpose, the size of the printer will also be enlarged. However, existing designs such as CN216658936U, CN220349071U and CN216267643U have low space utilization, complex structures, and inconvenient operation, making it difficult to effectively achieve a compact design.

[0005] The utility model innovatively designs the connection mode between the motion module and the cantilever, so that the motion module can be flexibly arranged, and at the same time optimizes the structure of the workbench and the cantilever to expand the hanging space, and has the advantages of compact equipment structure, convenient operation and low cost. Summary of the invention

[0006] In view of this, the utility model aims to provide a projection light-curing 3D printer with a compact structure to solve the problem that the traditional 3D printer has a non-compact structure and the residual resin recovery structure on the workbench easily causes the size of the whole machine to increase.

[0007] To achieve the above purpose, the utility model adopts the following technical solution: a compact projection light-curing 3D printer, comprising:

[0008] A motion module, on which a movable end for vertical sliding is arranged;

[0009] A cantilever, one end of which is connected to the movable end of the motion module and the axis is arranged to either side of the left or right direction, and the other end is connected to the workbench;

[0010] The hanging structure is arranged on the side of the cantilever close to the workbench and is used for hanging the disassembled workbench.

[0011] Furthermore, the workbench is arranged at a certain angle to the horizontal plane when suspended on the suspension structure.

[0012] Furthermore, a handle is provided on the workbench and is connected to the hanging structure through the handle.

[0013] Furthermore, two handles are provided and symmetrically distributed on the end surface of the workbench away from the working plane.

[0014] Furthermore, the handle is in a broken line shape.

[0015] Furthermore, the motion module is a screw module.

[0016] Furthermore, the suspension structure is a screw.

[0017] Furthermore, at least two screws are provided and distributed on the same horizontal line.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. This 3D printer changes the connection direction of the traditional cantilever and the motion module by setting the direction of the cantilever, which can save space without interference and avoid the defect of setting the movable ends of the cantilever and the motion module on the central axis of the molding space in the traditional layout, resulting in a large space occupation;

[0020] 2. This 3D printer is equipped with a hanging structure, so that the workbench can be disassembled and hung on the cantilever at a certain angle, which is conducive to the finished product and the resin remaining on the workbench to flow back into the resin pool, thereby saving space and improving space utilization. It is easy to operate and has a simple structure.

[0021] 3. This 3D printer is provided with a handle on the workbench, which can be easily grasped when operating the workbench. At the same time, the handle adopts a broken line shape, which is not easy to cause interference between the workbench and the 3D printer body when hanging, and has a good use effect. The handle has two functions and does not take up extra space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0023] Figure 1 This is a front view of a compact projection light-curing 3D printer according to the utility model;

[0024] Figure 2 It is a side view of a compact projection light-curing 3D printer according to the utility model;

[0025] Figure 3 This is a diagram showing the working state of the utility model when the working platform is suspended on the suspension structure.

[0026] Motion module 1; cantilever 2; workbench 3; hanging structure 4; handle 5. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely explain the technical solutions in the embodiments of the utility model. It should be noted that the embodiments and features in the embodiments of the utility model can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0028] It should be noted that the descriptions of the present invention regarding directions such as "left", "right", "left side", "right side", "upper", "lower", "top", "bottom", etc. are all defined based on the relationship between the orientations or positions shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure described must be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. In the description of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Referring to the accompanying drawings, this embodiment is described, a compact projection light-curing 3D printer, comprising:

[0031] The motion module 1 is provided with a movable end that slides vertically; the printer is a projection light-curing 3D printer, so the motion module 1 is required to drive the workbench 3 to move in the up and down directions to complete the corresponding printing work. The motion module 1 specifically adopts a lead screw module, and the sliding end is specifically a slider and is slidably connected in the preset track of the lead screw module, specifically a track in the vertical direction. In order to better explain the description, the direction is defined here. In the prior art, for the slider of the lead screw module, in general, the cantilever is set on the front side of the slider, and the corresponding workbench position of the cantilever end is fixed, that is, the motion module is designed on the central axis of the molding space. If the cantilever is to be shortened to make the structure compact, when the projection optical path is short, it is often easy to interfere with the projection optical machine. Because the optical path is fixed, the position of the projection optical machine cannot be moved. If the lead screw position is moved forward and backward to avoid the optical machine, the cantilever length and the overall size of the printer will inevitably increase, reduce the structural rigidity, reduce the printing accuracy, and increase the equipment cost. Therefore, in the present application, the cantilever 2 is arranged to face either side in the left or right direction, which can reduce the space occupied by the entire 3D printer, achieve a compact structure, and prevent interference. The motion module 1 uses a KK50 linear module.

[0032] The cantilever 2 has one end connected to the movable end of the motion module 1 and its axis is arranged to either side of the left or right direction, and the other end is connected to the workbench 3; the cantilever 2 specifically adopts a 200×50×50 mm aluminum bar. When the cantilever 2 is assembled, its axis is perpendicular to the axis of the lead screw of the motion module 1, and the side end of the cantilever cooperates with the slider of the motion module 1. There are 4 through holes on the cantilever 2, and 4 M4 round head hexagon screws are passed through the through holes and screwed into the threaded holes on the slider to fix it to the slider. The cantilever 2 is away from the end of the motion module 1, and an open groove with a length and width of 50×10.5 mm is opened along the axis of the cantilever 2. The center plane of the groove is parallel to the axis of the lead screw of the motion module 1. After the workbench 3 is engaged through the open groove, the cantilever 2 is fixed to the workbench 3 through the screws on the workbench 3.

[0033] The suspension structure 4 is arranged on the side of the cantilever 2 close to the workbench 3 for suspending the disassembled workbench 3. The suspension structure 4 is used to suspend the disassembled workbench 3, so that the workbench 3 can accelerate the flow speed of the residual resin in a naturally inclined state after being suspended, so that the resin of the workbench 3 flows into the resin pool below the workbench 3 for recovery.

[0034] In this embodiment, the workbench 3 is arranged at a certain angle to the horizontal plane when it is suspended on the suspension structure 4. Arranging at a certain angle is conducive to the rapid flow of resin, and the suspension structure space of this structure is relatively loose, and the suspension operation does not require precise alignment, which improves the human-machine efficiency. Compared with the external device for controlling the drying of resin, the resin flows directly back to the liquid pool without additional recovery, which simplifies the operation process.

[0035] In this embodiment, the workbench 3 is provided with a handle 5 and connected to the suspension structure 4 through the handle 5. The provision of the handle 5 can facilitate the operation of the workbench 3 during the operation of the workbench 3, such as when the workbench 3 is installed on or removed from the cantilever 2 and when the workbench 3 is suspended, thereby improving the convenience of operation. At the same time, the handle 5, as a medium for connecting to the suspension structure 4, can save components that are separately connected to the suspension structure 4, play a role in streamlining the structure, and achieve multiple uses of one component.

[0036] In this embodiment, two handles 5 are provided and symmetrically distributed on the end surface of the workbench 3 away from the work plane. The symmetrical arrangement makes it easy to grasp, and the hanging can be completed no matter which side of the handle 5 is aligned with the hanging structure 4, and the appropriate hanging direction can be selected according to the shape of the printed product.

[0037] In this embodiment, the handle 5 is in a broken line shape. The broken line shape is mainly configured as a part perpendicular to the workbench 3 and an inclined part that is perpendicular to the workbench 3 and extends radially outward at a certain angle. The rod connected to the inclined part is connected to the suspension structure 4 to complete the suspension. The handle 5 is 47 mm high and 40 mm wide, and the vertical part is 20 mm high and 10 mm in diameter.

[0038] In this embodiment, the suspension structure 4 is an M3 round head hexagon socket screw and protrudes 15 mm from the cantilever. The screw is easy to obtain and has low cost. It only needs to open a threaded hole on the side wall of the cantilever 2 and connect the screw into the threaded hole to complete the connection, which is easy to operate.

[0039] In this embodiment, at least two screws are provided and distributed on the same horizontal line, which is beneficial to cooperate with the handle 5 to form a stable supporting effect.

[0040] When the printing work is completed, the workbench 3 is disassembled from the cantilever 2. As for the connection form of the workbench 3 from the cantilever 2, corresponding screws can be set on the workbench 3 to fix the workbench 3 and the cantilever 2. When disassembling, just unscrew the corresponding screws. After disassembly, the workbench 3 can be hung on the screws through the handle 5 to complete the hanging of the workbench 3. The residual resin on the workbench 3 and the product naturally flows into the resin pool below, eliminating the need for an additional drying work area, saving space, and simple and easy operation.

[0041] The embodiments of the utility model disclosed above are only used to help explain the utility model. The embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model.

Claims

1. A compact projection light-curing 3D printer, characterized in that: include: A motion module (1) is provided with a movable end for vertical sliding; A cantilever (2), one end of which is connected to the movable end of the motion module (1) and the axis is arranged to face either side in the left or right direction, and the other end of which is connected to the workbench (3); A suspension structure (4) is arranged on a side of the cantilever (2) close to the workbench (3) and is used to suspend the disassembled workbench (3).

2. A compact projection light-curing 3D printer according to claim 1, characterized in that: When the workbench (3) is suspended on the suspension structure (4), it is arranged at a certain angle to the horizontal plane.

3. A compact projection light-curing 3D printer according to claim 1, characterized in that: The workbench (3) is provided with a handle (5) and is connected to the suspension structure (4) via the handle (5).

4. A compact projection light-curing 3D printer according to claim 3, characterized in that: Two handles (5) are provided and symmetrically distributed on the end surface of the workbench (3) away from the working plane.

5. A compact projection light-curing 3D printer according to claim 3, characterized in that: The handle (5) is in a broken line shape.

6. A compact projection light-curing 3D printer according to claim 1, characterized in that: The motion module (1) is a lead screw module.

7. A compact projection light-curing 3D printer according to any one of claims 1 to 5, characterized in that: The suspension structure (4) is a screw.

8. A compact projection light-curing 3D printer according to claim 7, characterized in that: At least two screws are provided and are distributed on the same horizontal line.

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