阅读说明：本技术 一种便携折叠3d打印机 (Portable folding 3D printer ) 是由 张兰勇 吕鹏程 马士策 魏伦潘 孔令琦 贺坤 于 2021-08-26 设计创作，主要内容包括：本发明属于3D打印设备技术领域,具体涉及一种便携折叠3D打印机。本发明仅通过一组丝杠驱动模块即可实现两组X轴垂直升降结构的远离电机端左右同步移动,同时丝杠驱动模块的丝杠设置在打印平台下方,电源与电路板之间,能够避免由于丝杠驱动模块的重量导致打印机侧偏和重心高的问题,同时使得X轴垂直升降结构的运动较为稳定。本发明能够快速折叠携带,同时打印喷头沿Z轴垂直升降时更加稳定,折叠结构自由度高,摆脱同类打印机需要支撑臂的限制。(The invention belongs to the technical field of 3D printing equipment, and particularly relates to a portable folding 3D printer. According to the invention, the left and right synchronous movement of the two groups of X-axis vertical lifting structures far away from the motor end can be realized only through one group of screw driving modules, and simultaneously, the screws of the screw driving modules are arranged below the printing platform and between the power supply and the circuit board, so that the problems of lateral deviation and high gravity center of the printer caused by the weight of the screw driving modules can be avoided, and the movement of the X-axis vertical lifting structures is relatively stable. The folding device can be folded and carried quickly, the printing nozzle is more stable when vertically lifted along the Z axis, the folding structure has high degree of freedom, and the limitation that similar printers need supporting arms is eliminated.)

1. The utility model provides a portable folding 3D printer which characterized in that: comprises a top frame (10), a bottom frame (5), a moving device and two sets of X-shaped vertical lifting structures; the printing head is characterized in that top sliding rails (16) are arranged on two sides of the top frame (10) along the Y-axis direction, Z-axis moving plates (17) are arranged at the rear ends of the two sides of the top frame (10), X-axis moving plates are arranged on the top sliding rails (16), and printing heads (9) are mounted on the X-axis moving plates; two sides of the bottom frame (5) are provided with bottom sliding rails along the Y-axis direction, a printing platform is arranged on the bottom sliding rails, and a power supply, a transformer (13) and a circuit board for driving a printer are arranged in the printing platform; the X-shaped vertical lifting structure comprises an inner arm (1) and an outer arm (4), wherein the middle parts of the inner arm (1) and the outer arm (4) are connected through a middle shaft (2); the two sets of X-shaped vertical lifting structures are respectively arranged at two sides of the whole printer, one ends of inner arms (1) of the two sets of X-shaped vertical lifting structures are respectively fixed at the rear ends of two sides of the bottom frame (5), and the other ends of the inner arms are respectively connected with two sides of the X-axis moving plate; one end of each of the outer arms (4) of the two sets of X-shaped vertical lifting structures is respectively connected with a Z-axis moving plate (17) fixed at the rear ends of the two sides of the top plate (10), and the other end of each of the outer arms is respectively connected with the two sides of the printing platform; the moving device comprises a stepping motor (12), a lead screw (11) and a lead screw nut seat (18); the screw nut seat (18) and the stepping motor (12) are arranged at the rear end of the bottom plate (5); the lead screw (11) is arranged on the lead screw nut seat (18) through a lead screw nut, the bottom end of the lead screw (11) is connected with the stepping motor (12), and the other end of the lead screw is connected inside the printing platform.

Technical Field

The invention belongs to the technical field of 3D printing equipment, and particularly relates to a portable folding 3D printer.

Background

3D printing is one of the rapid prototyping technologies, which is a technology for constructing an object by using a bondable material such as powdered metal or plastic and the like in a layer-by-layer printing manner on the basis of a digital model file. The color mixing 3D printer with portable property is also a future development trend based on transportation or use needs.

Chinese patent document CN106564190A published in 2017, 4 and 19 describes a 3D folding printer, which includes a lower cover plate, a base is disposed in the middle of the surface of the lower cover plate, the base is provided with a first slide rail extending along the X-axis direction, and a main board hinged to the end of the base, and a workbench connected to the first slide rail is disposed on the surface of the base; a group of semi-open first accommodating spaces are formed on the lower cover plate on two sides of the base, a stand column is arranged on each of two sides of the base and comprises a column body and a sliding seat which are hinged with each other, the sliding seat is arranged in a sliding groove in the surface of the lower cover plate, the rear end of the lower cover plate is hinged with an upper cover, the upper cover comprises a pair of return beams which can accommodate the stand column and can be accommodated in the first accommodating spaces, and an upper cover plate which is connected with the pair of return beams, and a second sliding rail is arranged on the inner side surface of each return beam and is hinged to the upper end of the stand column; the two upright posts are respectively provided with a third slide rail extending towards the Z-axis direction, a horizontal cabin is connected between the two third slide rails in a sliding manner, and a fourth slide rail extending along the Y-axis direction and a spray head connected with the fourth slide rail in a sliding manner are arranged in the horizontal cabin; and the opposite outer sides of the two circular beams are respectively provided with a fifth sliding rail, and the fifth sliding rails are connected to the two sides of the upper end of the mainboard through a connecting rod structure. In the technical scheme, the stand column consists of a column body and a sliding seat which are connected in a hinged mode, but how to enable the stand column to be in a vertical state when the 3D printer works is not disclosed, and in addition, when the 3D folding printer is folded, the relative positions of all parts need to be manually adjusted, so that the folding machine is inconvenient.

Disclosure of Invention

The invention aims to provide a portable folding 3D printer which solves the problem that the steps required by folding of the existing 3D folding printer are complicated.

The purpose of the invention is realized by the following technical scheme: comprises a top frame 10, a bottom frame 5, a moving device and two sets of X-shaped vertical lifting structures; a top sliding rail 16 is arranged on each of two sides of the top frame 10 along the Y-axis direction, a Z-axis moving plate 17 is arranged at the rear end of each of two sides of the top frame 10, an X-axis moving plate is arranged on each top sliding rail 16, and a printing head 9 is arranged on each X-axis moving plate; two sides of the bottom frame 5 are provided with bottom sliding rails along the Y-axis direction, a printing platform is arranged on the bottom sliding rails, and a power supply, a transformer 13 and a circuit board for driving a printer are arranged in the printing platform; the X-shaped vertical lifting structure comprises an inner arm 1 and an outer arm 4, wherein the middle parts of the inner arm 1 and the outer arm 4 are connected through a middle shaft 2; the two sets of X-shaped vertical lifting structures are respectively arranged at two sides of the whole printer, one ends of the inner arms 1 of the two sets of X-shaped vertical lifting structures are respectively fixed at the rear ends of two sides of the bottom frame 5, and the other ends of the inner arms are respectively connected with two sides of the X-axis moving plate; one end of each of the outer arms 4 of the two sets of X-shaped vertical lifting structures is respectively fixed on the Z-axis moving plate 17 at the rear ends of the two sides of the top plate 10 and is connected with the other end of each of the outer arms respectively connected with the two sides of the printing platform; the moving device comprises a stepping motor 12, a lead screw 11 and a lead screw nut seat 18; the lead screw nut seat 18 and the stepping motor 12 are arranged at the rear end of the bottom plate 5; the lead screw 11 is installed on the lead screw nut seat 18 through a lead screw nut, the bottom end of the lead screw 11 is connected with the stepping motor 12, and the other end of the lead screw is connected inside the printing platform.

The invention has the beneficial effects that:

according to the invention, the left and right synchronous movement of the two groups of X-axis vertical lifting structures far away from the motor end can be realized only through one group of screw driving modules, and simultaneously, the screws of the screw driving modules are arranged below the printing platform and between the power supply and the circuit board, so that the problems of lateral deviation and high gravity center of the printer caused by the weight of the screw driving modules can be avoided, and the movement of the X-axis vertical lifting structures is relatively stable. The folding device can be folded and carried quickly, the printing nozzle is more stable when vertically lifted along the Z axis, the folding structure has high degree of freedom, and the limitation that similar printers need supporting arms is eliminated.

Drawings

Fig. 1 is a left side view of a portable folding 3D printer.

Fig. 2 is a front view of a portable folding 3D printer.

Fig. 3 is a bottom view of a portable folding 3D printer.

Fig. 4 is a schematic view of an X-type vertical lift structure with extraneous portions removed.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The invention designs a portable folding 3D printer which can be folded and carried quickly. Meanwhile, the printing nozzle is more stable when vertically lifting along the Z axis, the folding structure has high degree of freedom, and the limitation that similar printers need supporting arms is eliminated.

A portable folding 3D printer comprises a top frame 10, a bottom frame 5, a moving device and two sets of X-shaped vertical lifting structures; a top sliding rail 16 is arranged on each of two sides of the top frame 10 along the Y-axis direction, a Z-axis moving plate 17 is arranged at the rear end of each of two sides of the top frame 10, an X-axis moving plate is arranged on each top sliding rail 16, and a printing head 9 is arranged on each X-axis moving plate; two sides of the bottom frame 5 are provided with bottom sliding rails along the Y-axis direction, a printing platform is arranged on the bottom sliding rails, and a power supply, a transformer 13 and a circuit board for driving a printer are arranged in the printing platform; the X-shaped vertical lifting structure comprises an inner arm 1 and an outer arm 4, wherein the middle parts of the inner arm 1 and the outer arm 4 are connected through a middle shaft 2; the two sets of X-shaped vertical lifting structures are respectively arranged at two sides of the whole printer, one ends of the inner arms 1 of the two sets of X-shaped vertical lifting structures are respectively fixed at the rear ends of two sides of the bottom frame 5, and the other ends of the inner arms are respectively connected with two sides of the X-axis moving plate; one end of each of the outer arms 4 of the two sets of X-shaped vertical lifting structures is respectively fixed on the Z-axis moving plate 17 at the rear ends of the two sides of the top plate 10 and is connected with the other end of each of the outer arms respectively connected with the two sides of the printing platform; the moving device comprises a stepping motor 12, a lead screw 11 and a lead screw nut seat 18; the lead screw nut seat 18 and the stepping motor 12 are arranged at the rear end of the bottom plate 5; the lead screw 11 is installed on the lead screw nut seat 18 through a lead screw nut, the bottom end of the lead screw 11 is connected with the stepping motor 12, and the other end of the lead screw is connected inside the printing platform.

Example 1:

the invention designs a portable folding 3D printer, which is shown in a figure 1-4 and comprises a top frame 10, a bottom frame 5, an X-shaped vertical lifting structure inner arm 1, an outer arm 4, a slide rail 16, a slide block 15, a printing head 9, a printing platform, a lead screw 1, a 42 stepping motor 12, a transformer 13 and the like; the inner and outer arms of the X-shaped vertical lifting structure are respectively connected to a front end top plate connecting piece 8 through a convex shaft connecting piece 14, a rear end top plate connecting piece 7, a front end bottom plate connecting piece 6 and a rear end bottom plate connecting piece 3, the front end top plate connecting piece 8 and the front end bottom plate connecting piece 6 are respectively connected to X-axis moving plates and printing platform two sides on a slide rail, the X-axis moving plates and the printing platform two sides are carried on the slide rail through sliders, the rear end top plate connecting piece 7 is fixed to two sides of a top frame 10 and connected with a Z-axis moving plate 17, and the rear end bottom plate connecting piece 3 is fixed to two sides of a bottom frame 5.

The moving device of the printer is composed of a 42 stepping motor 12 for driving a lead screw 11, the lead screw 11 and a lead screw nut seat 18 which is positioned on the lead screw 11 and drives a Z-axis moving plate 17 of an outer arm of an X-shaped vertical lifting structure to move. The lead screw is connected to the lead screw nut seat through the lead screw nut. The inner arm and the outer arm are connected through the middle shaft 2, and driven by the Z-axis moving plate 17 to move synchronously through the sliding block on the sliding rail, and the printing head 9 is fixed on the X-axis moving plate and can freely move along the X-Y Z axis under driving.

The X-shaped vertical lifting structure comprises the following components: inner arm 1, outer arm 4, axis 2, protruding axle connecting piece 14, roof mounting 7, 8, bottom plate mounting 3, 6, slide rail 16, slider 15 have following advantage: (1) the rolling friction force is small, and the stability is good; (2) the contact area is large, and the elastic deformation is small; (3) the effective moving bodies are more, and high-rigidity and high-load movement is easy to realize; (4) the structure design is flexible, the installation and the use are convenient, and the service life is long; (5) small mechanical energy consumption, high precision, high speed and large bearing capacity.

The central shaft 2 of the X-shaped vertical lifting structure is used as a boundary, the end of the X-shaped vertical structure far away from the motor is connected with a sliding block 15 of a sliding rail 16 through a convex shaft fixing piece 14 and a connecting piece, the sliding rail 16 is fixedly connected with the corresponding positions of the top plate 10 and the bottom plate 5, and the end of the X-shaped vertical structure close to the motor is connected with the connecting piece directly fixed with the bottom plate 5 of the top plate 10 through the convex shaft fixing piece 14.

The screw rod driving module is used for driving the two groups of X-axis vertical lifting structures to move left and right synchronously far away from the motor end. In this embodiment, the screw driving module includes a screw 11, a stepping motor 42, a screw nut seat 18 and a Z-axis moving plate 17 fixed on the screw nut seat and connected to the X-axis vertical lifting structure. The 42 stepping motors are correspondingly and electrically connected with the stepping motor driver ports of the controller. Therefore, the left and right synchronous movement of the two groups of X-axis vertical lifting structures far away from the motor end can be realized only through one group of screw rod driving modules, and the synchronous effect is superior to that of other synchronous methods. Further, lead screw 11 of lead screw drive module sets up in the print platform below, like this between power and the circuit board, can avoid lead screw drive module to set up when, because lead screw drive module's weight leads to the printer problem that the side is inclined to one side and the focus is high. And meanwhile, the movement of the X-axis vertical lifting structure is stable.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.