Frame for 3D printer and 3D printer

Abstract

The utility model discloses a frame for 3D printer and 3D printer, the frame for 3D printer comprises a base, a plurality of stand columns fixed on the base, a printing platform, a Z-axis motor, a synchronous belt, at least two synchronous wheels and at least two ball screws, the at least two ball screws are located on the different sides of the printing platform respectively, each ball screw is connected with a screw sliding block, the screw sliding blocks are fixedly connected with one side of the printing platform, the ball screws are fixedly connected with the synchronous wheels, the synchronous belt is in transmission connection with the at least two synchronous wheels, and the Z-axis motor is in transmission connection with the synchronous belt or the synchronous wheels. According to the frame for the 3D printer, the Z-axis motor can drive the synchronous belt and the multiple synchronous wheels to rotate synchronously, so that different ball screws rotate synchronously, then the lead screw sliding blocks slide synchronously, different sides of the printing platform are driven to move synchronously, and synchronism and printing precision of the printing platform during Z-direction printing are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a frame for a 3D printer and a 3D printer. Background Art

[0002] The existing 3D printer, as shown in the Chinese utility model patent CN218054019U, titled: A 3D printer for facilitating material extrusion, with the authorization announcement date: December 16, 2022, includes a housing. Inside the housing, there is a printing platform. One side of the printing platform moves in the Z direction through a Z-axis movement mechanism. Above the inside of the housing, there is a pellet hopper installed. Above the printing platform, there is an X-axis movement mechanism. Both ends of the X-axis movement mechanism are driven by a Y-axis movement mechanism to move in the Y direction. An inlet bin is arranged on the X-axis movement mechanism, and an extrusion mechanism is installed on one side of the inlet bin. The X-axis movement mechanism can drive the extrusion mechanism to move in the X direction. In this 3D printer for facilitating material extrusion, the extrusion mechanism set therein can ensure that the printing material is evenly extruded, ensure that the amount extruded per unit time remains uniform, make the distribution of the printing material uniform, improve the printing effect, and the extruder can move flexibly, and the printing platform is also convenient to lift, so as to ensure the accurate printing position and improve the printing accuracy.

[0003] However, the 3D printer with the above structure still has the following deficiencies: (1) The above printing platform realizes the Z-direction movement through a lifting plate, and the lifting plate only has a Z-axis movement mechanism on one side thereof, so that the printing platform and the lifting plate are unevenly stressed during movement, that is: the Z-direction movement on the other side is prone to deviation from the Z-direction movement on the side where the Z-axis movement mechanism is located, affecting the Z-direction printing accuracy. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the above-mentioned prior art, and provide a frame for a 3D printer that enables synchronous Z-direction movement on different sides of the printing platform and ensures the Z-direction printing accuracy of the printing platform.

[0005] Another purpose of the utility model is to provide a 3D printer including the above-mentioned frame for a 3D printer.

[0006] The purpose of the utility model is achieved as follows:

[0007] A frame for a 3D printer, comprising a base, a plurality of columns fixed on the base, a printing platform and a Z-axis motor. An installation space for the printing platform is formed between the base and the plurality of columns. It is characterized in that it further comprises a synchronous belt, at least two synchronous wheels and at least two ball screws. The at least two ball screws are respectively located on different sides of the printing platform. A screw slider is connected to each ball screw and the screw slider is fixedly connected to one side of the printing platform. The ball screw is fixedly connected to the synchronous wheel, the synchronous belt is in transmission connection with the at least two synchronous wheels, and the Z-axis motor is in transmission connection with the synchronous belt or the synchronous wheel. For this frame of the 3D printer, the Z-axis motor can drive the synchronous belt and multiple synchronous wheels to rotate synchronously, so that different ball screws rotate synchronously, and then the screw sliders realize synchronous sliding on the ball screws, so that multiple screw sliders drive different sides of the printing platform to move synchronously, ensuring the synchronism and printing accuracy of the printing platform during Z-direction printing.

[0008] The object of the present invention can also be solved by the following technical measures:

[0009] Specifically further, it further comprises a platform connecting member. One end of the platform connecting member is fixedly connected to the screw slider, and the other end of the platform connecting member is fixedly connected to one side of the printing platform; so that the screw slider drives the printing platform to move through the platform connecting member, and its connection operation is simple and the implementation effect is good.

[0010] Specifically further, the platform connecting member is a connecting plate. A connecting profile extends outwards from one side of the lower part of the printing platform. The other end of the connecting plate is placed on the connecting profile, and a connecting screw passes through the other end of the connecting plate from top to bottom and is fixedly connected to the connecting profile; so that the connection between the connecting plate and the connecting profile is firm, which is beneficial to the connecting plate to stably drive the connecting profile and the printing platform to lift stably.

[0011] Specifically further, an inner concave space is provided on the column. The synchronous wheel is rotatably connected to the base and a part of the synchronous wheel extends into the inner concave space. The inner circumference of the synchronous belt is in transmission connection with the outer circumference of the synchronous wheel, and the ball screw is fixedly connected to the synchronous wheel; the inner concave space plays a certain hidden and protective role for the synchronous wheel and the ball screw thereon. At the same time, multiple synchronous wheels are synchronously connected through the synchronous belt, and its implementation effect is good.

[0012] Specifically further, a motor seat is provided on the base, and the Z-axis motor is fixed on the motor seat. The Z-axis motor is in transmission connection with the synchronous belt; thus, multiple synchronous wheels are rotated synchronously through the synchronous belt.

[0013] Specifically further, the number of the columns, the number of the synchronous pulleys and the number of the ball screws are all four. The base is a square seat body, and the four columns are respectively fixed at the four corners of the square seat body; the four corners of the printing platform can be synchronously driven by the screw sliders on the four ball screws, so that the Z-direction movement of the printing platform is stable, and the Z-direction printing accuracy of the printing platform can be well guaranteed.

[0014] Specifically further, the base is made of steel material, and the columns are made of aluminum profile materials; the steel base has good rigidity and can well reduce the vibration during high-speed printing of the printer.

[0015] Another object of the present utility model is achieved as follows:

[0016] A 3D printer includes the above-mentioned frame for 3D printer.

[0017] The beneficial effects of the present utility model are as follows:

[0018] (1) For this frame for 3D printer, the Z-axis motor can drive the synchronous belt and multiple synchronous pulleys to rotate synchronously, so that different ball screws rotate synchronously, and then the screw sliders realize synchronous sliding on the ball screws, so that multiple screw sliders drive different sides of the printing platform to move synchronously, ensuring the synchronism and printing accuracy during Z-direction printing of the printing platform.

[0019] (2) The screw slider drives the printing platform to move through the platform connecting piece, and its connection operation is simple and the implementation effect is good.

[0020] (3) The concave space has a certain hiding and protecting effect on the synchronous pulley and the ball screw thereon, and at the same time, multiple synchronous pulleys are synchronously connected through the synchronous belt, and its implementation effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the frame for 3D printer of the present utility model.

[0022] Figure 2 It is Figure 1 the enlarged view of part A of

[0023] Figure 3 It is a sectional view of the frame for 3D printer of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present utility model will be further described below with reference to the drawings and embodiments:

[0025] Embodiment, in combination with Figures 1 to 3As shown in the figure, a frame for a 3D printer includes a base 1, several columns 2 fixed on the base 1, a printing platform 3 and a Z-axis motor. An installation space for the printing platform 3 is formed between the base 1 and the several columns 2. It is characterized in that it further includes a synchronous belt 4, at least two synchronous pulleys 5 and at least two ball screws 6. The at least two ball screws 6 are respectively located on different sides of the printing platform 3. A screw slider 61 is connected to each ball screw 6 and the screw slider 61 is fixedly connected to one side of the printing platform 3. The ball screw 6 is fixedly connected to the synchronous pulley 5. The synchronous belt 4 is in transmission connection with the at least two synchronous pulleys 5. The Z-axis motor is in transmission connection with the synchronous belt 4 or the synchronous pulley 5 (the Z-axis motor is not shown).

[0026] As a specific solution, it further includes a platform connecting member 7. One end of the platform connecting member 7 is fixedly connected to the screw slider 61, and the other end of the platform connecting member 7 is fixedly connected to one side of the printing platform 3.

[0027] In this embodiment, the platform connecting member 7 is a connecting plate. A connecting profile 31 extends outward from one side of the lower part of the printing platform 3. The other end of the connecting plate is placed on the connecting profile 31. A connecting screw 100 passes through the other end of the connecting plate from top to bottom and is fixedly connected to the connecting profile 31.

[0028] As a more specific solution, an inner concave space 21 is provided on the column 2. The synchronous pulley 5 is rotatably connected to the base 1 and a part of the synchronous pulley 5 extends into the inner concave space 21. The inner circumference of the synchronous belt 4 is in transmission connection with the outer circumference of the synchronous pulley 5. The ball screw 6 is fixedly connected to the synchronous pulley 5.

[0029] In this embodiment, a motor base 8 is provided on the base 1. The Z-axis motor is fixed on the motor base 8. The Z-axis motor is in transmission connection with the synchronous belt 4.

[0030] As a better implementation scheme, the number of the columns 2, the number of the synchronous pulleys 5 and the number of the ball screws 6 are all four. The base 1 is a square seat body. The four columns 2 are respectively fixed at the four corners of the square seat body.

[0031] In this embodiment, the base 1 is made of steel material, and the column 2 is made of aluminum profile material.

[0032] A 3D printer includes the above-mentioned frame for a 3D printer.

Claims

1. A frame for a 3D printer, comprising a base (1), a plurality of columns (2) fixed on the base (1), a printing platform (3) and a Z-axis motor. An installation space for the printing platform (3) is formed between the base (1) and the plurality of columns (2). It is characterized in that, It further includes a timing belt (4), at least two timing pulleys (5) and at least two ball screws (6). The at least two ball screws (6) are respectively located on different sides of the printing platform (3). A screw slider (61) is connected to each ball screw (6), and the screw slider (61) is fixedly connected to one side of the printing platform (3). The ball screw (6) is fixedly connected to the timing pulley (5), the timing belt (4) is drivingly connected to the at least two timing pulleys (5), and the Z-axis motor is drivingly connected to the timing belt (4) or the timing pulley (5).

2. The frame for a 3D printer according to claim 1, characterized in that, It further includes a platform connecting piece (7). One end of the platform connecting piece (7) is fixedly connected to the screw slider (61), and the other end of the platform connecting piece (7) is fixedly connected to one side of the printing platform (3).

3. The frame for a 3D printer according to claim 2, characterized in that, The platform connecting piece (7) is a connecting plate. A connecting profile (31) extends outward from one side of the lower part of the printing platform (3). The other end of the connecting plate is placed on the connecting profile (31), and a connecting screw (100) passes through the other end of the connecting plate from top to bottom and is fixedly connected to the connecting profile (31).

4. The frame for a 3D printer according to claim 1, characterized in that, An inner concave space (21) is provided on the column (2). The timing pulley (5) is rotatably connected to the base (1), and a part of the timing pulley (5) extends into the inner concave space (21). The inner circumference of the timing belt (4) is drivingly connected to the outer circumference of the timing pulley (5), and the ball screw (6) is fixedly connected to the timing pulley (5).

5. The frame for a 3D printer according to claim 4, characterized in that, A motor seat (8) is provided on the base (1), and the Z-axis motor is fixed on the motor seat (8). The Z-axis motor is drivingly connected to the timing belt (4).

6. The frame for a 3D printer according to claim 5, characterized in that, The number of the columns (2), the number of the timing pulleys (5) and the number of the ball screws (6) are all four. The base (1) is a square seat body, and the four columns (2) are respectively fixed at the four corners of the square seat body.

7. The frame for a 3D printer according to claim 1, characterized in that, The base (1) is made of steel material, and the column (2) is made of aluminum profile material.

8. A 3D printer, characterized in that, It includes the frame for 3D printer according to any one of claims 1-7.

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