A folding frame for a 3D printer

Abstract

A folding frame for a 3D printer, relating to the field of 3D printer technology, includes a frame, a lifting platform, connecting rod I, and connecting rod II. The lifting platform is located above one end of the frame and is horizontally positioned, perpendicular to the two sides of the horizontally positioned frame. Sliding seats are slidably connected to the two sides of the frame, and fixed seats are provided at the ends of the frame near the lifting platform. Driving devices for reciprocating movement of the two sliding seats along the corresponding sides of the frame are provided on both sides of the frame. Two ends of connecting rod I are hinged to the two corners of the top of the sliding seats, and the other ends of the two connecting rods I are correspondingly hinged to the two sides of the lifting platform, with the four connecting rods I being parallel to each other. This invention effectively solves the problems of cumbersome operation and poor print quality of existing folding printers.

Description

Technical Field

[0001] This invention relates to the field of 3D printer technology, and in particular to a folding frame for a 3D printer. Background Technology

[0002] As is well known, with the continuous development of science and technology, 3D printing technology has been well applied and improved in my country. Existing ordinary 3D printers all use vertical lead screws to raise and lower the printing platform or printing nozzle, that is, the Z-axis of the 3D printer is fixed, which results in the large size of the 3D printer. When not in use, it will occupy a lot of space and is not convenient to store. This phenomenon is a problem that needs to be solved by those skilled in the art.

[0003] Chinese patent (publication number: CN204997996U) discloses a foldable 3D printer. The printer frame and the printing base are hinged. When not in use, the printer frame can be manually rotated around the hinge position to achieve folding. However, the print head changes angle as the printer frame is rotated and folded. When printing is needed, the printer frame needs to be manually adjusted to a vertical position to ensure that the print head is perpendicular to the printing substrate. This is cumbersome and makes it difficult to ensure the perpendicularity of the print head to the printing substrate. The printer frame has poor stability, resulting in poor print quality. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention discloses a folding frame for a 3D printer.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] A folding frame for a 3D printer includes a frame, a lifting platform, connecting rod I, and connecting rod II. The lifting platform is located above one end of the frame and is horizontally positioned, perpendicular to the two sides of the horizontally positioned frame. Sliding seats are slidably connected to the two sides of the frame, and fixed seats are provided at the ends of the frame near the lifting platform. Driving devices for reciprocating movement of the two sliding seats along their respective sides are provided on both sides of the frame. Two connecting rods I are hinged to the two corner ends of the top of the sliding seats, and the other ends of the two connecting rods I are hinged to the corresponding ends of the lifting platform, with the four connecting rods I being parallel to each other. One end of connecting rod II is hinged to the middle of the connecting rod I located on one side of the sliding seat, and the length of connecting rod I is twice that of connecting rod II. The other end of connecting rod II is hinged to the corresponding fixed seat.

[0007] Preferably, the driving device includes a motor, a lead screw, and a lead screw nut. The motor is fastened to one end of the frame, and the output end of the motor is provided with a lead screw parallel to the side of the frame. The lead screw is threaded with a lead screw nut, and the lead screw nut is fastened to a corresponding sliding seat.

[0008] Preferably, the two drive devices on both sides of the frame are synchronously connected by a synchronous belt and a synchronous pulley.

[0009] Preferably, the sliding seat includes vertical plates disposed on the corresponding sides of the frame, and pulleys are respectively provided at the top center position and the two bottom corners between the two vertical plates.

[0010] Preferably, one end of each of two connecting rods II is hinged to the top two sides of the fixed base, and the other end of each connecting rod II is hinged to the corresponding two sides of the body of the connecting rod I.

[0011] Preferably, the connecting rod II is hinged to the connecting rod I which is away from the fixed seat.

[0012] Preferably, the fixing seat is fastened to the frame by bolts.

[0013] Preferably, the fixed base is provided with a limit switch for limiting the sliding base to approach the limit position of the fixed base.

[0014] Preferably, both ends of the lifting platform are provided with hinge seats.

[0015] Preferably, both the frame and the lifting platform are made of profiles.

[0016] By employing the technical solution described above, the present invention has the following beneficial effects:

[0017] This invention discloses a folding frame for a 3D printer, which has a simple structure, is easy to assemble, and has low production costs. Two connecting rods I are hinged to the two corner ends of the top of the sliding base, and the other ends of the two connecting rods I are correspondingly hinged to the two sides of the corresponding ends of the lifting platform. The four connecting rods I are parallel to each other, meaning that the two connecting rods I at the same end of the lifting platform, the lifting platform, and the sliding base can form a parallelogram four-bar linkage. One end of a connecting rod II is hinged to the middle of the connecting rod I on one side of the sliding base, and the length of connecting rod I is twice that of connecting rod II. The other end of connecting rod II is connected to a corresponding fixed... The sliding seat is hinged to the fixed seat, meaning that the sliding seat can be driven by the drive device to move closer to or away from the fixed seat along the corresponding side of the frame. This allows the lifting platform to rise or fall in the same vertical plane, and the lifting platform is always in a horizontal state. This allows the 3D printing nozzle to be installed on the lifting platform, and effectively ensures the stability of the 3D printing nozzle. In addition, the two drive devices on both sides of the frame are synchronously connected by a synchronous belt and synchronous pulley. This ensures that the two drive devices operate synchronously, thereby preventing the sliding seat from accidentally jamming due to the two drive devices not operating synchronously. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram illustrating the lifting principle of the lifting platform.

[0020] Figure 3 This is a schematic diagram of the sliding seat.

[0021] In the diagram: 1. Frame; 2. Lifting platform; 3. Linkage I; 4. Linkage II; 5. Sliding seat; 5-1. Vertical plate; 5-2. Pulley; 6. Fixed seat; 7. Drive device; 8. Limit switch; 9. Hinge seat. Detailed Implementation

[0022] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0023] Combined with appendix Figures 1-3A folding frame for a 3D printer includes a frame 1, a lifting platform 2, a connecting rod I 3, and a connecting rod II 4. The lifting platform 2 is located above one end of the frame 1 and is horizontally positioned, with the lifting platform 2 perpendicular to the two sides of the horizontally positioned frame 1. Sliding seats 5 are slidably connected to the two sides of the frame 1, and fixed seats 6 are respectively provided at the ends of the frame 1 near the lifting platform 2. Driving devices 7 for driving the two sliding seats 5 to reciprocate along the corresponding sides of the frame 1 are provided on both sides of the frame 1. If necessary, the sliding seat 5 includes a vertical plate 5-1 located on the corresponding side of the frame 1, with the top center and two bottom corners of the two vertical plates 5-1... Each end is equipped with a pulley 5-2, which allows the pulley 5-2 at the top of the vertical plate 5-1 to roll in connection with the corresponding top side of the frame 1, and the pulley 5-2 at the two bottom corners of the vertical plate 5-1 to roll in connection with the corresponding bottom side of the frame 1, thereby effectively ensuring the stability of the sliding seat 5; the driving device 7 includes a motor, a lead screw and a lead screw nut. The motor is fastened to one end of the frame 1, and the output end of the motor is equipped with a lead screw parallel to the side of the frame 1. The lead screw is threaded with a lead screw nut, and the lead screw nut is fastened to the corresponding sliding seat 5, which allows the sliding seat 5 to move closer to or further away from the fixed seat 6 along the corresponding side of the frame 1 through the motor;

[0024] The two corner ends of the top of the sliding seat 5 are respectively hinged to one end of two connecting rods I3. The other ends of the two connecting rods I3 are correspondingly hinged to the two sides of the corresponding ends of the lifting platform 2, and the four connecting rods I3 are parallel to each other. That is, the two connecting rods I3 located at the same end of the lifting platform 2 can form a parallelogram four-bar linkage with the lifting platform 2 and the sliding seat 5. As needed, both ends of the lifting platform 2 are provided with hinge seats 9, that is, the end of the connecting rod I3 away from the sliding seat 5 can be hinged to the hinge seat 9, which facilitates assembly operation. One end of the connecting rod II4 is hinged to the middle of the connecting rod I3 located on one side of the sliding seat 5, and the length of the connecting rod I3 is twice that of the connecting rod II4. The other end of the connecting rod II4 is correspondingly hinged to the fixed seat 6. That is, the sliding seat 5 can be driven by the driving device 7 to move closer to or away from the fixed seat 6 along the corresponding side of the frame 1, so that the lifting platform 2 is raised or lowered in the same vertical plane, and the lifting platform 2 is always in a horizontal state. Figure 2 Let the length of connecting rod I3 be R, the distance between sliding seat 5 and fixed seat 6 be X, and the lifting height of lifting platform 2 be Y. Then we can derive X. 2 +Y 2 =R 2The functional relationship is as follows; as needed, one end of two connecting rods II4 are respectively hinged to the top two sides of the fixed seat 6, and the other end of the two connecting rods II4 is correspondingly hinged to the two sides of the corresponding connecting rod I3. The connecting rod II4 is also correspondingly hinged to the connecting rod I away from the fixed seat 6, which can effectively ensure the stability of the connecting rod I3 when deflecting.

[0025] Furthermore, the two drive devices 7 on both sides of the frame 1 are synchronously connected via a synchronous belt and synchronous pulley, ensuring synchronous operation of the two drive devices 7 and preventing accidental jamming of the sliding seat 5 due to asynchronous operation of the two drive devices 7. The fixed seat 6 is fastened to the frame 1 with bolts, allowing the bolts to be loosened to adjust the position of the fixed seat 6, thereby adjusting the movable range between the sliding seat 5 and the fixed seat 6, and limiting the lowest position of the lifting platform 2. The fixed seat 6 is equipped with a limit switch 8 to limit the sliding seat 5 from approaching the limit position of the fixed seat 6, thus limiting the minimum distance between the sliding seat 5 and the fixed seat 6, and limiting the highest position of the lifting platform 2, while preventing collision between the sliding seat 5 and the fixed seat 6 due to operator error. Both the frame 1 and the lifting platform 2 are made of profiles, which are readily available, easy to install, and have good structural strength to effectively ensure overall stability. At the same time, the profiles are lightweight, effectively reducing the overall weight of the structure.

[0026] The folding frame for the 3D printer described in this invention is used such that the frame 1 is placed on a horizontal support platform, while avoiding interference between the sliding seat 5 and the support platform. A 3D printing nozzle capable of reciprocating along the lifting platform 2 can be installed on the lifting platform 2, and a 3D printing platform capable of reciprocating along the side length of the frame 1 is installed on the top of the frame 1, ensuring that the printing platform and the connecting rod I do not interfere with each other. According to X... 2 +Y 2 =R 2 The functional relationship controls the lifting height of the lifting platform 2, thus enabling 3D printing operations.

[0027] The parts of this invention not described in detail are prior art.

Claims

1. A folding frame for a 3D printer, characterized in that: The system includes a frame (1), a lifting platform (2), connecting rod I (3), and connecting rod II (4). The lifting platform (2) is located above one end of the frame (1) and is horizontally positioned. The lifting platform (2) is perpendicular to the two sides of the horizontally positioned frame (1). Sliding seats (5) are slidably connected to the two sides of the frame (1). Fixed seats (6) are provided at the ends of the two sides of the frame (1) near the lifting platform (2). Driving devices (7) for driving the two sliding seats (5) to reciprocate along the corresponding sides of the frame (1) are provided on both sides of the frame (1). The two corner ends of the top of the sliding seats (5) are hinged to one end of two connecting rods I (3). The other ends of the two connecting rods I (3) are corresponding to the two sides of the corresponding ends of the lifting platform (2). The four connecting rods I (3) are hinged and parallel to each other; one end of connecting rod II (4) is hinged to the middle of the connecting rod I (3) on one side of the sliding seat (5), and the length of connecting rod I (3) is twice that of connecting rod II (4). The other end of connecting rod II (4) is hinged to the corresponding fixed seat (6); the two driving devices (7) on both sides of the frame (1) are connected to each other through synchronous belt and synchronous pulley; the sliding seat (5) includes a vertical plate (5-1) on the corresponding side of the frame (1), and pulleys (5-2) are respectively provided at the top center and the bottom two corners of the two vertical plates (5-1), and the pulleys (5-2) are rolled to the frame (1); the fixed seat (6) is fastened to the frame (1) by bolts.

2. The folding frame for a 3D printer as described in claim 1, characterized in that: The drive device (7) includes a motor, a lead screw and a lead screw nut. The motor is fastened to one end of the frame (1). The output end of the motor is provided with a lead screw that is parallel to the side of the frame (1). The lead screw is threaded with a lead screw nut. The lead screw nut is fastened to the corresponding sliding seat (5).

3. The folding frame for a 3D printer as described in claim 1, characterized in that: The top two sides of the fixed base (6) are respectively hinged to one end of two connecting rods II (4), and the other ends of the two connecting rods II (4) are respectively hinged to the two sides of the corresponding connecting rod I (3).

4. The folding frame for a 3D printer as described in claim 1, characterized in that: The connecting rod II (4) is hinged to the connecting rod I which is away from the fixed seat (6).

5. The folding frame for a 3D printer as described in claim 1, characterized in that: The fixed seat (6) is provided with a limit switch (8) for limiting the sliding seat (5) to approach the extreme position of the fixed seat (6).

6. The folding frame for a 3D printer as described in claim 1, characterized in that: The lifting platform (2) is equipped with hinge seats (9) at both ends.

7. The folding frame for a 3D printer as described in claim 1, characterized in that: Both the frame (1) and the lifting platform (2) are made of profiles.

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