Low-noise 3D printer Z-axis transmission structure based on oil seal motor

Abstract

The utility model relates to the technical field of mechanical transmission and additive manufacturing, in particular to a low-noise 3D printer Z-axis transmission structure based on an oil seal motor, which comprises a bottom rack, a top rack, a hot bed assembly and a transmission assembly, a hot bed assembly used for supporting a printing material is arranged between the bottom rack and the top rack and comprises a hot bed frame and a bed plate, a through hole is formed in the edge of the center of the front end of the bottom rack, and a transmission assembly used for driving the hot bed assembly to ascend and descend along the Z axis is arranged in the through hole. The transmission assembly comprises a first-stage synchronous belt wheel, a second-stage synchronous belt wheel and a synchronous belt. According to the utility model, the synchronous belt is connected with the hot bed assembly, and the oil seal motor is adopted to drive along the first-stage synchronous pulley and the second-stage synchronous pulley through the synchronous belt, so that the noise can be effectively reduced, and the mechanical wear is reduced.

Description

Technical Field

[0001] The utility model relates to the fields of mechanical transmission and additive manufacturing, and in particular to a low-noise 3D printer Z-axis transmission structure based on an oil-sealed motor. Background Art

[0002] A 3D printer is a representative device of modern manufacturing technology. It can directly manufacture physical objects based on digital models. The Z-axis transmission system of a 3D printer is an important component of the 3D printer. It is responsible for moving the printing platform or nozzle in the vertical direction to achieve the process of stacking printing materials layer by layer. Currently, the Z-axis transmission system of a 3D printer usually adopts a combination of a stepper motor and a lead screw or a ball screw.

[0003] The existing Z-axis transmission structure of 3D printers is usually composed of a stepper motor and a lead screw or ball screw during use. Due to the gradual wear between the lead screw and the nut, the transmission accuracy decreases after long-term use, making the transmission structure prone to generating noise during operation, especially at high-speed movement, which affects the user experience. In addition, the lead screw transmission system requires regular lubrication and maintenance, which increases the cost of use and the difficulty of maintenance.

[0004] Therefore, in order to solve the problem that the above-mentioned transmission structure is prone to generate noise during operation and requires regular lubrication and maintenance, which increases the cost of use and the difficulty of maintenance, a low-noise 3D printer Z-axis transmission structure based on an oil-sealed motor can be designed. By replacing the lead screw, nut and stepper motor with a synchronous belt, synchronous pulley and oil-sealed motor, the above-mentioned problem can be solved. Utility Model Content

[0005] In order to overcome the existing Z-axis transmission structure of 3D printers, a stepper motor is usually combined with a lead screw or a ball screw during use. Due to the gradual wear between the lead screw and the nut, the transmission accuracy decreases after long-term use, making the transmission structure prone to noise during operation, especially at high-speed movement, which affects the user experience. In addition, the lead screw transmission system requires regular lubrication and maintenance, which increases the cost of use and the difficulty of maintenance.

[0006] The technical solution of the present utility model is: a low-noise 3D printer Z-axis transmission structure based on an oil-sealed motor, including a bottom frame, a top frame, a hot bed assembly and a transmission assembly. A top frame for cooperating with the bottom frame to support the hot bed is provided above the bottom frame, a hot bed assembly for supporting printing materials is provided between the bottom frame and the top frame, the hot bed assembly includes a hot bed frame and a bed plate, a through hole is provided at the front center edge of the bottom frame, a transmission assembly for driving the hot bed assembly to rise and fall along the Z-axis is provided inside the through hole, and the transmission assembly includes a primary synchronous pulley, a secondary synchronous pulley and a synchronous belt.

[0007] Preferably, by combining the top frame, the bottom frame, the hot bed assembly and the transmission assembly, compared with the transmission structure currently on the market, which is prone to generate noise during operation and requires regular lubrication and maintenance, increasing the cost of use and difficulty of maintenance, the present application supports the transmission assembly and the hot bed assembly through the bottom frame and the top frame, so that when the 3D printer needs the hot bed assembly to move, the hot bed assembly is connected through a synchronous belt, and an oil-sealed motor is used to transmit the power along the primary synchronous pulley and the secondary synchronous pulley through the synchronous belt, thereby effectively reducing noise, reducing mechanical wear, and improving the overall stability and service life of the transmission system.

[0008] Preferably, four sets of lifting guide rails are provided between the bottom frame and the top frame, and the four sets of lifting guide rails are arranged at the corners of the bottom frame and the top frame. The bottom frame and the top frame are fixedly connected by the four sets of lifting guide rails, and a rib plate is provided at the edge of the lower end of the through hole, and a strip shaft hole is opened in the center of the rib plate. Four sets of strip flange holes are provided around the edge of the strip shaft hole. By combining the rib plate, the strip shaft hole and the four sets of strip flange holes, the staff can install different types of oil-sealed motors according to their own needs. The tolerance reserved by the strip shaft hole and the four sets of strip flange holes can adapt to the flange plates and output shafts of different types of oil-sealed motors.

[0009] Preferably, the corners of the hot bed frame are all provided with supporting legs, and a lifting slide hole is opened at one end of the supporting leg. The lifting slide hole and the lifting guide rail are matched with each other. A sliding sleeve is provided inside the lifting slide hole. The hot bed frame slides along the lifting guide rail through the sliding sleeve. A transmission hole is opened at the front edge of the hot bed frame. The transmission hole and the through hole are concentrically arranged. A block is provided at the center of the transmission hole. When the transmission assembly drives the hot bed assembly to lift, the hot bed frame can lift and slide along the lifting guide rail through the sliding sleeve in the sliding hole. By combining four sets of lifting guide rails, the four sets of lifting guide rails can increase the stability of the hot bed assembly in the Z-axis movement.

[0010] Preferably, a fixed slot is provided in the center of the heated bed frame, the bed board is located above the heated bed frame, and a fixed block is provided at the lower end of the bed board. The fixed block and the fixed slot are engaged with each other, and the fixed slot and the fixed block are combined so that the bed board can be installed on the heated bed frame through the engagement of the fixed block and the fixed slot.

[0011] Preferably, the first-stage synchronous pulley is located below the through hole, an oil-sealed motor is provided behind the first-stage synchronous pulley, a motor frame is provided to match the oil-sealed motor, the motor frame is located behind the rib plate, the oil-sealed motor is located at the upper end of the motor frame, a transmission shaft is provided between the oil-sealed motor and the first-stage synchronous pulley, one end of the transmission shaft is connected to the oil-sealed motor, and the other end of the transmission shaft passes through the strip shaft hole and is connected to the first-stage synchronous pulley. By combining the oil-sealed motor, the first-stage synchronous pulley and the second-stage synchronous pulley, friction components are reduced and the service life of the system is extended. At the same time, since the oil-sealed motor adopts a closed design, the internal oil lubrication system ensures long-term operation without additional maintenance, so that the use cost and maintenance difficulty of the transmission structure can be greatly reduced.

[0012] Preferably, the secondary synchronous pulley is located above the primary synchronous pulley, and a mounting shaft is provided at the front end center of the secondary synchronous pulley, and a mounting hole is provided to match the mounting shaft. The mounting hole is located at the front end center of the top frame, and one end of the mounting shaft extends into the interior of the mounting hole. By combining the mounting shaft and the mounting hole, the secondary synchronous pulley can be installed on the top frame and cooperate with the primary synchronous pulley to drive the synchronous belt for transmission.

[0013] Preferably, the outer ends of the first-level synchronous pulley and the second-level synchronous pulley are provided with synchronous belts, which are located inside the through hole and the transmission hole. A fixed belt is provided inside one side of the synchronous belt, and both ends of the fixed belt are connected to the synchronous belt. A receiving hole for accommodating a block is provided in the center of the fixed belt and the synchronous belt. The block is located inside the receiving hole. The synchronous belt and the fixed belt are combined to fix the block in the receiving hole, so that the transmission assembly can drive the hot bed assembly to rise and fall along the Z axis during transmission, avoiding the mechanical wear problem of the traditional screw system, reducing maintenance requirements, and improving the efficiency and accuracy of the transmission.

[0014] Beneficial effects of the utility model:

[0015] 1. By combining the top frame, the bottom frame, the hot bed assembly and the transmission assembly, compared with the transmission structure currently on the market, which is easy to generate noise during operation and requires regular lubrication and maintenance, increasing the cost of use and maintenance difficulty, this application supports the transmission assembly and the hot bed assembly through the bottom frame and the top frame, so that when the 3D printer needs the hot bed assembly to move, the hot bed assembly is connected through a synchronous belt, and an oil-sealed motor is used to drive along the primary synchronous pulley and the secondary synchronous pulley through the synchronous belt, thereby effectively reducing noise, reducing mechanical wear, and improving the overall stability and service life of the transmission system. By combining the sliding sleeve and the sliding hole, when the transmission assembly drives the hot bed assembly to rise and fall, the hot bed frame can pass through the sliding hole. The sleeve slides up and down along the lifting guide rail. The four sets of lifting guide rails are combined to increase the stability of the hot bed assembly in the Z-axis movement. The combination of the oil-sealed motor, the first-level synchronous pulley and the second-level synchronous pulley reduces the friction components and extends the service life of the system. At the same time, since the oil-sealed motor adopts a closed design, the internal oil lubrication system ensures long-term operation without additional maintenance, which greatly reduces the use cost and maintenance difficulty of the transmission structure. The synchronous belt is combined with the fixed belt, so that the block can be fixed in the accommodating hole, so that the transmission assembly can drive the hot bed assembly to rise and fall along the Z-axis during transmission, avoiding the mechanical wear problem of the traditional screw system, reducing maintenance requirements, and improving the efficiency and accuracy of the transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the overall structure of the transmission structure of the utility model;

[0017] Figure 2 Shown is a schematic diagram of the bottom frame structure of the transmission structure of the utility model;

[0018] Figure 3 Shown is a schematic diagram of the bottom frame of the transmission structure of the utility model from another angle;

[0019] Figure 4 Shown is a schematic diagram of the hot bed assembly structure of the transmission structure of the utility model;

[0020] Figure 5 What is shown is a schematic diagram of the transmission component structure of the transmission structure of the present utility model.

[0021] Explanation of the accompanying drawings: 1. Bottom frame; 2. Hot bed assembly; 201. Hot bed frame; 202. Fixed slot; 203. Transmission hole; 204. Stop block; 205. Support foot; 206. Lifting slide hole; 207. Sleeve; 208. Bed board; 209. Fixed block; 3. Top frame; 4. Transmission assembly; 401. Oil-sealed motor; 402. Transmission shaft; 403. Primary synchronous pulley; 404. Synchronous belt; 405. Fixed belt; 406. Accommodating hole; 407. Secondary synchronous pulley; 408. Mounting shaft; 5. Motor frame; 6. Through hole; 7. Lifting guide rail; 8. Mounting hole; 9. Rib plate; 10. Strip flange hole; 11. Strip shaft hole. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] See also Figure 1-Figure 5 The utility model provides an embodiment: a low-noise 3D printer Z-axis transmission structure based on an oil-sealed motor, including a bottom frame 1, a top frame 3, a hot bed assembly 2 and a transmission assembly 4. A top frame 3 is provided above the bottom frame 1 for cooperating with the bottom frame 1 to support the hot bed, and a hot bed assembly 2 for supporting printing materials is provided between the bottom frame 1 and the top frame 3. The hot bed assembly 2 includes a hot bed frame 201 and a bed plate 208. A through hole 6 is provided at the front center edge of the bottom frame 1. A transmission assembly 4 is provided inside the through hole 6 for driving the hot bed assembly 2 to rise and fall along the Z axis. The transmission assembly 4 includes a primary synchronous pulley 403, a secondary synchronous pulley 407 and a synchronous belt 404.

[0024] See also Figure 2-Figure 3In this embodiment, four sets of lifting guide rails 7 are provided between the bottom frame 1 and the top frame 3. The four sets of lifting guide rails 7 are arranged at the corners of the bottom frame 1 and the top frame 3. The bottom frame 1 and the top frame 3 are fixedly connected by the four sets of lifting guide rails 7. A rib plate 9 is provided at the edge of the lower end of the through hole 6. A strip shaft hole 11 is opened in the center of the rib plate 9. Four sets of strip flange holes 10 are provided around the edge of the strip shaft hole 11. Through the rib plate 9, the strip shaft hole 11 and the four sets of strip flange holes 1 0 combination, so that the staff can install different types of oil-sealed motors 401 according to their needs. The tolerance reserved by the strip shaft hole 11 and the four groups of strip flange holes 10 can adapt to the flange plates and output shafts of different types of oil-sealed motors 401. The corners of the hot bed frame 201 are all provided with support legs 205, and one end of the support legs 205 is provided with a lifting slide hole 206. The lifting slide hole 206 is matched with the lifting guide rail 7, and the interior of the lifting slide hole 206 is provided with a sliding sleeve 20 7, the hot bed frame 201 slides along the lifting guide rail 7 through the sliding sleeve 207, and a transmission hole 203 is opened at the front edge of the hot bed frame 201. The transmission hole 203 is concentrically arranged with the through hole 6. A stopper 204 is set at the center of the transmission hole 203. When the transmission assembly 4 drives the hot bed assembly 2 to rise and fall, the hot bed frame 201 can rise and fall and slide along the lifting guide rail 7 through the sliding sleeve 207 in the sliding hole. By combining four sets of lifting guide rails 7, the four sets of The lifting guide rail 7 can increase the stability of the heated bed assembly 2 in the Z-axis movement. A fixed slot 202 is provided in the center of the heated bed frame 201. The bed plate 208 is located above the heated bed frame 201. A fixed block 209 is provided at the lower end of the bed plate 208. The fixed block 209 and the fixed slot 202 are engaged with each other. By combining the fixed slot 202 with the fixed block 209, the bed plate 208 can be installed on the heated bed frame 201 through the fixed block 209 and the fixed slot 202.

[0025] See also Figure 3-Figure 5In this embodiment, the first-stage synchronous pulley 403 is located below the through hole 6, and an oil-sealed motor 401 is provided behind the first-stage synchronous pulley 403. A motor frame 5 is provided to match the oil-sealed motor 401. The motor frame 5 is located behind the rib plate 9. The oil-sealed motor 401 is located at the upper end of the motor frame 5. A transmission shaft 402 is provided between the oil-sealed motor 401 and the first-stage synchronous pulley 403. One end of the transmission shaft 402 is connected to the oil-sealed motor 401, and the other end of the transmission shaft 402 passes through the strip shaft hole 11 and is connected to the first-stage synchronous pulley 403. The combination of the sealed motor 401, the first-level synchronous pulley 403 and the second-level synchronous pulley 407 reduces friction components and extends the service life of the system. At the same time, since the oil-sealed motor 401 adopts a closed design, the internal oil lubrication system ensures long-term operation without additional maintenance, which greatly reduces the use cost and maintenance difficulty of the transmission structure. The second-level synchronous pulley 407 is located above the first-level synchronous pulley 403. The front center of the second-level synchronous pulley 407 is provided with a mounting shaft 408, and a mounting hole 8 is opened to match the mounting shaft 408. The mounting hole 8 is located at the front center of the top frame 3, one end of the mounting shaft 408 extends to the inside of the mounting hole 8, and the mounting shaft 408 is combined with the mounting hole 8 to enable the secondary synchronous pulley 407 to be installed on the top frame 3 and cooperate with the primary synchronous pulley 403 to drive the synchronous belt 404 for transmission. The outer ends of the primary synchronous pulley 403 and the secondary synchronous pulley 407 are sleeved with a synchronous belt 404, and the synchronous belt 404 is located inside the through hole 6 and the transmission hole 203. A fixed belt 405 is provided inside one side of the synchronous belt 404 to fix it. Both ends of the belt 405 are connected to the synchronous belt 404. A receiving hole 406 for accommodating the stopper 204 is opened in the center of the fixed belt 405 and the synchronous belt 404. The stopper 204 is located inside the receiving hole 406. The synchronous belt 404 and the fixed belt 405 are combined to make the stopper 204 fixed in the receiving hole 406, so that the transmission assembly 4 can drive the hot bed assembly 2 to rise and fall along the Z axis during transmission, avoiding the mechanical wear problem of the traditional screw system, reducing maintenance requirements, and improving the efficiency and accuracy of the transmission.

[0026] During operation, the oil-sealed motor 401 drives the primary synchronous pulley 403 and the secondary synchronous pulley 407 through the transmission shaft 402, and the primary synchronous pulley 403 and the secondary synchronous pulley 407 drive the synchronous belt 404 to rotate. Since the block 204 can be fixed in the accommodating hole 406, the transmission assembly 4 can drive the hot bed assembly 2 to rise and fall along the Z axis during transmission.

[0027] When the transmission assembly 4 drives the hot bed assembly 2 to move up and down, the hot bed frame 201 can move up and down and slide along the lifting guide rail 7 through the sliding sleeve 207 in the sliding hole. By combining the four sets of lifting guide rails 7, the four sets of lifting guide rails 7 can increase the stability of the hot bed assembly 2 in the Z-axis movement.

[0028] Through the above steps, the top frame 3, the bottom frame 1, the hot bed assembly 2 and the transmission assembly 4 are combined, which makes it easier to generate noise during operation compared to the transmission structure currently on the market, and requires regular lubrication and maintenance, which increases the cost of use and difficulty of maintenance. In this application, the transmission assembly 4 and the hot bed assembly 2 are supported by the bottom frame 1 and the top frame 3, so that when the 3D printer needs the hot bed assembly 2 to move, the hot bed assembly 2 is connected through the synchronous belt 404, and the oil-sealed motor 401 is used to transmit the power along the primary synchronous pulley 403 and the secondary synchronous pulley 407 through the synchronous belt 404, so that it can effectively reduce noise, reduce mechanical wear, and improve the overall stability and service life of the transmission system.

Claims

1. A low-noise 3D printer Z-axis transmission structure based on an oil-sealed motor, comprising a bottom frame (1); characterized in that: The invention also includes a top frame (3), a hot bed assembly (2) and a transmission assembly (4); a top frame (3) for cooperating with the bottom frame (1) to support the hot bed is provided above the bottom frame (1); a hot bed assembly (2) for supporting printing materials is provided between the bottom frame (1) and the top frame (3); the hot bed assembly (2) includes a hot bed frame (201) and a bed plate (208); a through hole (6) is provided at the front center edge of the bottom frame (1); a transmission assembly (4) for driving the hot bed assembly (2) to rise and fall along the Z axis is provided inside the through hole (6); the transmission assembly (4) includes a first-level synchronous pulley (403), a second-level synchronous pulley (407) and a synchronous belt (404).

2. The low-noise Z-axis transmission structure of a 3D printer based on an oil-sealed motor according to claim 1, characterized in that: Four sets of lifting guide rails (7) are provided between the bottom frame (1) and the top frame (3). The four sets of lifting guide rails (7) are all arranged at the corners of the bottom frame (1) and the top frame (3). The bottom frame (1) and the top frame (3) are fixedly connected through the four sets of lifting guide rails (7). A rib plate (9) is provided at the edge of the lower end of the through hole (6). A strip shaft hole (11) is provided at the center of the rib plate (9). Four sets of strip flange holes (10) are provided around the edge of the strip shaft hole (11).

3. The low-noise Z-axis transmission structure of a 3D printer based on an oil-sealed motor according to claim 2, characterized in that: The heating bed frame (201) is provided with a support leg (205) at each corner, and a lifting slide hole (206) is provided at one end of the support leg (205). The lifting slide hole (206) and the lifting guide rail (7) are matched with each other, and a sliding sleeve (207) is provided inside the lifting slide hole (206). The heating bed frame (201) slides along the lifting guide rail (7) through the sliding sleeve (207). A transmission hole (203) is provided at the front edge of the heating bed frame (201). The transmission hole (203) and the through hole (6) are concentrically arranged, and a stopper (204) is provided at the center of the transmission hole (203).

4. The low-noise Z-axis transmission structure of a 3D printer based on an oil-sealed motor according to claim 3, characterized in that: A fixed slot (202) is provided at the center of the heated bed frame (201), a bed plate (208) is located above the heated bed frame (201), a fixed block (209) is provided at the lower end of the bed plate (208), and the fixed block (209) and the fixed slot (202) are engaged with each other.

5. The low-noise Z-axis transmission structure of a 3D printer based on an oil-sealed motor according to claim 1, characterized in that: The first-stage synchronous pulley (403) is located below the through hole (6); an oil-sealed motor (401) is provided behind the first-stage synchronous pulley (403); a motor frame (5) is provided to match the oil-sealed motor (401); the motor frame (5) is located behind the rib plate (9); the oil-sealed motor (401) is located at the upper end of the motor frame (5); a transmission shaft (402) is provided between the oil-sealed motor (401) and the first-stage synchronous pulley (403); one end of the transmission shaft (402) is connected to the oil-sealed motor (401); and the other end of the transmission shaft (402) passes through the strip shaft hole (11) and is connected to the first-stage synchronous pulley (403).

6. The low-noise Z-axis transmission structure of a 3D printer based on an oil-sealed motor according to claim 5, characterized in that: The secondary synchronous pulley (407) is located above the primary synchronous pulley (403), and a mounting shaft (408) is provided at the front center of the secondary synchronous pulley (407). A mounting hole (8) is provided to match the mounting shaft (408), and the mounting hole (8) is located at the front center of the top frame (3). One end of the mounting shaft (408) extends into the interior of the mounting hole (8).

7. The low-noise Z-axis transmission structure of a 3D printer based on an oil-sealed motor according to claim 6, characterized in that: The outer ends of the first-stage synchronous pulley (403) and the second-stage synchronous pulley (407) are sleeved with synchronous belts (404), the synchronous belt (404) is located inside the through hole (6) and the transmission hole (203), a fixed belt (405) is provided inside one side of the synchronous belt (404), both ends of the fixed belt (405) are connected to the synchronous belt (404), and an accommodating hole (406) for accommodating a stopper (204) is opened in the center of the fixed belt (405) and the synchronous belt (404), and the stopper (204) is located inside the accommodating hole (406).

Images