TWI657913B - 3d printer - Google Patents

Abstract

A 3D printer is used to solve the problem that the nozzle of the conventional 3D printer is prone to errors in movement. The system includes: a base with a Z-direction guide module; a carrier that is displaceably connected to the Z-direction guide module; a pulley set with a plurality of pulleys and a belt; The base, the other several pulleys are provided on the carrier, the belt passes through all the pulleys and the two ends are fixed to the base; a forming platform is disposed on the carrier in X direction displacement; and a spray head, It is disposed on the base so as to be displaceable in the Y direction and faces the molding platform.

Description

3D printer

The invention relates to a printer, especially a 3D printer capable of reducing errors.

In recent years, 3D printing technology has developed vigorously, and various types of printing technology have been derived. Some of the 3D printers are based on Cartesian coordinates, and control a forming platform and a nozzle to produce X, Y, and Z three-axis relative movements orthogonal to each other, so that the nozzle can reach any position in the design size.

Generally speaking, the 3D printing technology adopts a layer-by-layer printing and curing method, which is repeated until the object printing is completed. However, most conventional 3D printers use a screw to control the forming platform or the nozzle to move in the Z-axis direction, and the screw may be caused by sliding, thread wear, or foreign matter such as dirt and oil stains between the threads, causing the molding platform or The nozzle produces a slight error in movement, and after printing and curing layer by layer, it causes problems such as object skew or layer shift in the finished product.

In view of this, the conventional 3D printer does still need to be improved.

In order to solve the above problems, the present invention provides a 3D printer, which uses a leather belt to precisely control the movement in the Z-axis direction, thereby avoiding problems such as skewed or layered objects in the finished product.

Directionality of the present invention as described below, or similar terms such as "front", "rear", "up" "(Top)", "Bottom (bottom)", "Inner", "Outside", "Side", etc., are mainly referred to the directions of the attached drawings, and each directionality or its approximate terms are only used to help explain and understand the invention The embodiments are not intended to limit the present invention.

The "X (axis) direction", "Y (axis) direction", and "Z (axis) direction" in the present invention are three axes (X axis, Y axis, and Z axis) that are perpendicular to each other in a rectangular coordinate system. For setting, that is, the three axes are orthogonal to each other, which can be understood by those having ordinary knowledge in the technical field to which the present invention belongs.

The 3D printer of the present invention comprises: a base, the base having a Z-direction guide module; a carrier, the carrier being displaceably connected to the Z-direction guide module; a pulley group, the pulley group There are several pulleys and a belt, the multiple pulleys include a high fixed pulley, a low fixed pulley, an upper movable pulley and a lower movable pulley, and the high fixed pulley and the low fixed pulley are rotatably disposed on the base, respectively. An upper moving pulley is rotatably provided at the upper end of the carrier, and a lower moving pulley is rotatably provided at the lower end of the carrier. The first end of the belt is fixed to the base and is adjacent to the high-definition pulley. Pass the upper moving pulley, the high fixed pulley, the low fixed pulley and the lower moving pulley in sequence, the second end of the belt is fixed to the base and adjacent to the low fixed pulley; a forming platform, the forming platform can be X The nozzle is disposed on the carrier in a direction of displacement; and a nozzle is disposed on the base in a direction of Y displacement and faces the molding platform.

According to this, the 3D printer of the present invention can accurately control the movement in the Z-axis direction by using the belt of the pulley set, and the belt will not cause inaccurate displacement of the molding platform and the nozzle due to wear, dirt, or sliding. Therefore, problems such as skewed or layered objects of the finished product can be effectively avoided; therefore, the present invention can achieve effects such as improving the quality of the finished product.

Wherein, one side of the carrier is provided with two pulley assembly parts, the two pulley assembly parts are respectively provided on the upper and lower surfaces of the carrier, and the upper movable pulley is rotatably provided on the pulley on the upper surface of the carrier. An assembly part, the lower movable pulley is rotatably provided on the pulley assembly part located on the lower surface of the carrier. In this way, it has effects such as improving the convenience of assembly.

Wherein, the pulley set has a driver connected to the high fixed pulley or the low fixed pulley Wheel, the drive is a reduction motor or a servo motor. In this way, it has effects such as improving printing accuracy.

Wherein, the pulley set has a turbine coaxially coupled with the high fixed pulley or the low fixed pulley, the pulley set has a scroll rod connected to a driver, and the turbine engages the scroll rod. In this way, it has effects such as improving printing accuracy.

The Z-direction guide module includes a plurality of guide rods and a plurality of shaft sleeves, each of which extends along the Z direction, and each of the sleeves is slidably sleeved on a corresponding guide rod, and the carrier is combined with the plurality of Bushing. In this way, it has the effects of improving the convenience of assembly and the smoothness of the lifting movement of the stage.

The number of the guide rods is four, and the guide rods are arranged at intervals on the four corners of the carrier. In this way, it has the effects of improving the smoothness when guiding the platform to rise and fall.

Wherein, an X-direction movement module is set up on the carrier, and the X-direction movement module includes an X-direction transmission member and a connection block, and the connection block combines the X-direction transmission member and the molding platform. In this way, it has effects such as improving the convenience of assembly.

The X-direction motion module further includes two second slide rails and a plurality of sliders. The two second slide rails are respectively disposed on two sides of the X-direction transmission member, and each of the second slide rails and the X-direction transmission. The pieces are arranged in parallel, and the plurality of sliders are slidably disposed on the two second slide rails and combined with the forming platform. In this way, it has the effects of improving the support stability of the molding platform.

Wherein, the top of the base is provided with a horizontal frame, and the horizontal frame is provided with a Y-direction movement module. The Y-direction movement module includes a Y-direction transmission member, a first slide rail and a linkage member. A slide rail is disposed in parallel with the Y-direction transmission member, the linkage member is slidably disposed on the first slide rail and connected to the Y-direction transmission member, and the spray head is assembled and positioned on the linkage member. In this way, it has effects such as improving the convenience of assembly.

1‧‧‧ base

11‧‧‧ platform

12‧‧‧ stand

13‧‧‧ horizontal frame

14‧‧‧Z Direction Guide Module

141‧‧‧Guide

142‧‧‧Shaft sleeve

15‧‧‧Y-direction motion module

151‧‧‧ Transmission parts

152‧‧‧The first slide

153‧‧‧ Linkage

2‧‧‧ carrier

21‧‧‧Pulley Assembly Department

22‧‧‧X-direction motion module

221‧‧‧X-direction transmission

222‧‧‧connection block

223‧‧‧Second slide

224‧‧‧ Slider

3‧‧‧ pulley block

31‧‧‧Pulley

31a‧‧‧High-definition pulley

31b‧‧‧Low fixed pulley

31c‧‧‧Upward pulley

31d‧‧‧Down the pulley

32‧‧‧Belt

33‧‧‧Driver

34‧‧‧ Turbine

35‧‧‧ Vortex

4‧‧‧forming platform

5‧‧‧ Nozzle

Figure 1: A perspective view of a preferred embodiment of the present invention.

FIG. 2 is a partial side structural view of a preferred embodiment of the present invention.

In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes the preferred embodiments of the present invention and the accompanying drawings in detail, as follows: Please refer to FIG. A preferred embodiment of the 3D printer of the present invention, the 3D printer generally includes a base 1, a carrier 2, a pulley set 3, a molding platform 4, and a nozzle 5, the carrier 2, the The pulley set 3 and the spray head 5 are respectively mounted on the base 1, and the molding platform 4 is displaceably set on the carrier 2.

The base 1 can be used for assembling and positioning the components such as the carrier 2, the pulley set 3, and the spray head 5. In this embodiment, the base 1 includes a base 11, a vertical plate 12, and a horizontal frame 13, The two vertical plates 12 are disposed on one surface of the bottom platform 11 and extend upward in the Z direction. The two vertical plates 12 are opposed in the Y direction. The two ends of the horizontal frame 13 are connected to the two vertical plates 12 respectively. The horizontal frame 13 is arranged along the Y direction and is located on the top of the base 1. According to this, the base 11, the two vertical plates 12 and the horizontal frame 13 can collectively form a type capable of stably assembling and positioning each component in a flat or three-dimensional space. It is worth noting that the type of the base 1 can be adjusted according to requirements, which can be understood by those having ordinary knowledge in the art, and is not limited to the type disclosed in the drawings of this embodiment.

The base 1 has a Z-direction guiding module 14 for guiding the stage 2 to be displaced in the Z-direction. For example, without limitation, the Z-direction guide module 14 of this embodiment includes a plurality of guide rods 141 and a plurality of shaft sleeves 142, and each of the guide rods 141 is disposed on a surface of the base 11 and faces upward in the Z direction. Extending, each of the shaft sleeves 142 is slidably sleeved on the corresponding guide rod 141.

In addition, in this embodiment, a Y-direction movement module 15 may be set on the horizontal frame 13 of the base 1 to guide the nozzle head 5 to be displaced in the Y direction. The Y-direction motion module 15 includes a Y-direction transmission member 151, a first slide rail 152, and a linkage member 153. The Y-direction transmission member 151 may be a belt set running along the Y-axis direction, the first slide rail 152 may be disposed in parallel with the Y-direction transmission member 151, and the link member 153 may be slidably disposed on the first slide. Rail 152 and connect the Y direction Transmission member 151. According to this, when the Y-direction transmission member 151 operates, the linkage member 153 can be driven to generate a Y-direction displacement on the first slide rail 152. It should be particularly noted that the present invention does not limit the type of the linking member 153, that is, the linking member 153 may be a plurality of combined blocks, or a plurality of joints may be provided on a single block to respectively combine the Y Components such as the transmission member 151 and the first slide rail 152.

The stage 2 is movably connected to the Z-direction guide module 14. In this embodiment, the stage 2 can be combined with the plurality of shaft sleeves 142 to smoothly guide along the plurality of guide rods 141. , It moves up or down relative to the base 1 in a Z-direction displacement. The number of the guide rods 141 is preferably four, and the guide rods 141 are arranged at intervals on the four corners of the carrier 2 to improve the stability when guiding the carrier 2 to rise and fall. In addition, one side of the carrier 2 may be provided with two pulley assembly portions 21 adjacent to one of the vertical plates 12. The two pulley assembly portions 21 are preferably provided on the upper and lower surfaces of the carrier 2, respectively.

An X-direction movement module 22 can be set up on the carrier 2 in this embodiment to guide the molding platform 4 to generate displacement along the X-direction. The X-direction movement module 22 may include an X-direction transmission member 221 and a connection block 222. The X-direction transmission member 221 may be, for example, a belt set running along the X-axis direction. The connection block 222 is combined with the X-direction transmission member. 221 and the molding platform 4; accordingly, when the X-direction transmission member 221 operates, the connecting block 222 can drive the molding platform 4 to generate X-direction displacement.

In addition, in order to improve the smoothness of carrying the molding platform 4, the X-direction motion module 22 preferably further includes a plurality of second slide rails 223 and a plurality of sliders 224 to jointly support the molding platform 4. In detail, in this embodiment, the number of the second slide rails 223 may be two, and the two second slide rails 223 are respectively disposed on two sides of the X-direction transmission member 221, and each of the second slide rails 223 may be disposed in parallel with the X-direction transmission member 221. The plurality of sliders 224 are respectively slidably disposed on the two second slide rails 223, and the plurality of sliders 224 are combined with the molding platform 4. Wherein, the number of the sliders 224 on each of the second slide rails 223 may be a single or a plurality of, which is not limited in the present invention, and the principle is that the molding platform 4 can be stably supported.

The pulley set 3 has a plurality of pulleys 31 and a belt 32, and the plurality of pulleys 31 is provided on the base 1, and several pulleys 31 are provided on the carrier 2. The belt 32 passes through all the pulleys 31 and the two ends are fixed to the base 1 to drive the carrier by the pulley group 3. 2 generates a Z-direction displacement with respect to the base 1. In this embodiment, the plurality of pulleys 31 may include a high fixed pulley 31a, a low fixed pulley 31b, an upper movable pulley 31c, and a lower movable pulley 31d. The high fixed pulley 31a and the low fixed pulley 31b are respectively rotatably provided. One of the vertical plates 12 on the base 1, and the high fixed pulley 31 a and the low fixed pulley 31 b are preferably opposite to each other in the Z direction; the upper movable pulley 31 c is rotatably provided on the pulley assembly portion 21 at the upper end of the stage 2. The lower moving pulley 31d is rotatably provided on the pulley assembly portion 21 at the lower end of the carrier 2. The first end of the belt 32 may be fixed to the upright plate 12 of the base 1 and adjacent to the high-definition pulley 31a; the belt 32 sequentially passes through the upper movable pulley 31c, the high-definition pulley 31a, the low The fixed pulley 31b and the lower movable pulley 31d, the second end of the belt 32 can be fixed to the vertical plate 12 of the base 1, and is adjacent to the low fixed pulley 31b.

In addition, the pulley set 3 has a driver 33 directly or indirectly connected to the high-fixation pulley 31a or the low-fixation pulley 31b, so that the driver 33 drives the high-fixation pulley 31a or the low-fixation pulley 31b to rotate, and then passes through the belt 32. The resulting transmission causes the remaining pulleys 31 to rotate, which has the effect of driving the carrier 2 to move in the Z direction. Wherein, the driver 33 may be, for example, a reduction motor or a servo motor, so that the driver 33 can drive the high fixed pulley 31a or the low fixed pulley 31b to rotate at an appropriate speed, and the driver 33 can also self-lock when the driver 33 stops running. , To prevent the high-fixation pulley 31a or the low-fixation pulley 31b from reversing, so that the stage 2 can be maintained stopped at a predetermined position in the Z direction, and movement errors caused by sliding can be avoided, thereby improving printing accuracy. Alternatively, the driver 33 may be a general motor, and the pulley group 3 may have a turbine 34 coaxially coupled with the high fixed pulley 31a or the low fixed pulley 31b, and the pulley group 3 has a scroll 35 connected to the driver 33, and By engaging the turbine 34 with the scroll 35, the high fixed pulley 31a or the low fixed pulley 31b can be driven to rotate at an appropriate speed, and the effects of self-locking and anti-reverse can be achieved.

The molding platform 4 is disposed on the stage 2 so as to be capable of X-direction displacement. In this embodiment, the molding platform 4 is connected to the connection block 222 of the X-direction motion module 22 and several sliders at the same time. 224. According to this, when the X-direction transmission member 221 of the X-direction movement module 22 operates, the connecting block 222 can drive the molding platform 4 to generate X-direction displacement, and the molding platform 4 links the sliders 224 in the The two second slide rails 223 are simultaneously displaced.

The spray head 5 is disposed on the base 1 so as to be displaceable in the Y direction and faces the molding platform 4. In this embodiment, the spray head 5 is assembled and positioned on the linkage member 153 of the Y-direction movement module 15. According to this, when the Y-direction transmission member 151 of the Y-direction movement module 15 operates, the linkage member 153 can drive the spray head 5 to generate a Y-direction displacement.

Please refer to Figs. 1 and 2. According to the foregoing structure, when an object (not shown in the figure) is to be printed by the 3D printer of the present invention, the operation of the pulley set 3 can be controlled to drive the carrier 2 from the The Z-direction guide module 14 guides and rises to a position adjacent to the nozzle 5, and controls the operation of the X-direction movement module 22 and the Y-direction movement module 15 to adjust the forming platform 4 and the nozzle 5. Relative position, so that you can print the object step by step accurately according to the set path.

Among them, the 3D printer of the present invention can achieve the precise positioning effect in the Z-direction stepless manner by using the plurality of pulleys 31 and the belt 32 of the pulley group 3. At the same time, by setting a part of the pulley 31 on the carrier 2, all the components on the entire carrier 2 form a counterweight to the belt 32, so no additional weight structure is needed to enable the pulley unit 3 to The effect of smooth operation. Furthermore, the pulley 31 provided on the base 1 forms a fixed pulley type, and the pulley 31 provided on the carrier 2 forms a movable pulley type, so that the pulley group 3 can achieve the labor-saving effect when the carrier 2 is moved up and down.

In summary, the 3D printer of the present invention can accurately control the movement in the Z-axis direction by using the leather belt of the pulley group, and the belt will not cause inaccurate displacement of the molding platform and the nozzle due to factors such as wear, dirt or sliding. In this case, problems such as skewed or layered objects of the finished product can be effectively avoided; therefore, the present invention can achieve effects such as improving the quality of the finished product.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention. The technical scope protected by the invention The scope of protection shall be determined by the scope of the attached patent application.

Claims (9)

A 3D printer includes: a base, the base having a Z-direction guide module; a carrier, the carrier being displaceably connected to the Z-direction guide module; a pulley group, the pulley group having several Pulleys and a belt, the plurality of pulleys including a high fixed pulley, a low fixed pulley, an upper movable pulley and a lower movable pulley, the high fixed pulley and the low fixed pulley are rotatably provided on the base, and the upper movable pulley The lower end of the carrier is rotatably provided on the upper end of the carrier. The first end of the belt is fixed to the base and adjacent to the high-definition pulley. The belt is wound in sequence. The second end of the belt is fixed to the base and adjacent to the low fixed pulley through the upper moving pulley, the high fixed pulley, the low fixed pulley and the lower fixed pulley; a forming platform, the forming platform can be displaced in the X direction The nozzle is grounded on the carrier; and a nozzle is arranged on the base in a Y-displaceable direction and faces the molding platform. The 3D printer described in item 1 of the scope of patent application, wherein one side of the carrier is provided with two pulley assembly parts, and the two pulley assembly parts are respectively provided on the upper and lower surfaces of the carrier, and the upper moving pulley The pulley assembly portion is rotatably provided on the upper surface of the carrier, and the lower movable pulley is rotatably provided on the pulley assembly portion on the lower surface of the carrier. According to the 3D printer described in item 1 of the scope of patent application, wherein the pulley set has a driver connected to the high fixed pulley or the low fixed pulley, and the driver is a reduction motor or a servo motor. The 3D printer according to item 1 of the scope of patent application, wherein the pulley group has a turbine coaxially coupled with the high fixed pulley or the low fixed pulley, and the pulley group has a scroll connected to a driver, and the turbine engages the scroll . The 3D printer described in item 1 of the scope of patent application, wherein the Z-direction guide module includes a plurality of guide rods and a plurality of shaft sleeves, each of which extends in the Z direction, and each of the shaft sleeves is slidable The ground sleeve is connected to the corresponding guide rod, and the carrier is combined with the plurality of shaft sleeves. The 3D printer according to item 5 of the scope of patent application, wherein the number of the guide rods is four, and the guide rods are arranged at intervals on the four corners of the carrier. The 3D printer described in item 1 of the scope of patent application, wherein an X-direction motion module is set on the stage, and the X-direction motion module includes an X-direction transmission member and a connection block, and the connection block is combined The X-direction transmission member and the forming platform. The 3D printer described in item 7 of the scope of patent application, wherein the X-direction motion module further includes two second slide rails and several sliders, and the two second slide rails are respectively provided on the X-direction transmission member. On the two sides, each of the second slide rails is disposed in parallel with the X-direction transmission member, and the plurality of sliders are slidably disposed on the two second slide rails and combined with the forming platform. The 3D printer described in item 1 of the scope of patent application, wherein the top of the base has a horizontal frame, and the horizontal frame is provided with a Y-direction motion module, and the Y-direction motion module includes a Y-direction transmission Piece, a first slide rail and a linkage piece, the first slide rail is arranged in parallel with the Y-direction transmission piece, the linkage piece is slidably arranged on the first slide rail and connected to the Y-direction transmission piece, the spray head The assembly is positioned on the linkage.