Electric heating equipment of 3D printer

Abstract

The invention belongs to the technical field of 3D printing, and particularly relates to 3D printer electric heating equipment which comprises a printer head, a heating plate is arranged below the printer head, a nozzle is mounted at the bottom end of the heating plate, a cooling fan is mounted on one side of the printer head, and a motor is mounted on the side, away from the cooling fan, of the printer head. A first rotating rod is fixed to the end of a rotating shaft of the motor, the first rotating rod is sleeved with a lifting sleeve, an ejector rod is arranged on one side of the lifting sleeve and can penetrate through the interior of the spray head, and a steering block is fixed to the side, close to the first rotating rod, of the heating plate; the motor drives the first rotating rod to rotate so that the heating plate can be driven to move from the position below the printer head to the position below the ejector rod, the first rotating rod drives the lifting sleeve so that the ejector rod can move downwards to eject out plastic in the nozzle, cleaning of the interior of the nozzle can be achieved, and the plastic in the nozzle is prevented from being heated and aged many times.

Description

Technical Field

[0001] The present invention belongs to the technical field of 3D printing, and specifically relates to a 3D printing electro-heating device. Background Art

[0002] A 3D printer is a processing device that can rapidly prototype. During the processing, the 3D printer heats and shapes plastic to form the required shape. During the heating process, a heating device is required to heat the plastic, making the plastic soft and then enabling shaping.

[0003] In the existing technical solutions, during use, the plastic needs to be melted by a heater and shaped with the melted plastic. After each use, a part of the melted plastic remains inside the heater. When the plastic solidifies and is reheated during the next use, the plastic inside the heater is repeatedly heated at high temperatures, easily resulting in aging and carbonization on the outside, which will cause defects on the surface of the formed product.

[0004] Therefore, the present invention provides a 3D printing electro-heating device. Summary of the Invention

[0005] In order to make up for the deficiencies of the existing technology and solve at least one of the technical problems proposed in the background art.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: A 3D printing electro-heating device of the present invention includes a printer head. A heating plate is arranged below the printer head. A nozzle is installed at the bottom end of the heating plate. A cooling fan is installed on one side of the printer head. A motor is installed on the side of the printer head away from the cooling fan. A first rotating rod is fixed to the end of the rotating shaft of the motor. A lifting sleeve is sleeved outside the first rotating rod. A push rod is arranged on one side of the lifting sleeve. The push rod can penetrate inside the nozzle. A steering block is fixed to the side of the heating plate close to the first rotating rod. A separation component is arranged at the bottom end of the first rotating rod.

[0007] Preferably, multiple groups of bristles are fixedly arranged at equal intervals outside the push rod, and the outer sides of the bristles can be closely attached to the inner surface of the nozzle.

[0008] Preferably, a support frame is arranged below the motor. One side of the support frame is fixedly connected to the printer head. Slots are opened at the four corners of the top end of the heating plate. A sliding cavity is arranged inside the printer head. A clamping column is movably connected inside the sliding cavity. The bottom end of the clamping column is hemispherical. A first spring is fixed to the top end of the clamping column. The top end of the first spring is fixedly connected to the inner wall of the sliding cavity. The bottom end of the clamping column can be engaged with the slot.

[0009] Preferably, a sliding block is fixed inside the lifting sleeve. A second slideway is opened on the outside of the first rotating rod. The sliding block can be slidably connected inside the second slideway.

[0010] Preferably, a first slideway is provided above the second slideway, and the slider can be slidably connected inside the first slideway.

[0011] Preferably, a support rod is fixed on one side of the lifting sleeve close to the ejector rod. A moving sleeve is sleeved outside the support rod. The ejector rod is fixed at the bottom end of the moving sleeve. A sliding rod is fixed on one side of the moving sleeve close to the printer head. A guiding frame is fixed on one side of the printer head close to the sliding rod. The sliding rod is slidably connected inside the guiding frame. An inclined section is provided at the top end of the guiding frame for cooperating with the first slideway.

[0012] Preferably, second rotating rods are rotatably connected to both sides of the output port at the bottom end of the printer head. The two second rotating rods are meshed and connected. A cutter is fixed on one side of the two second rotating rods close to each other. A push rod is meshed and connected to one side of the second rotating rod away from the ejector rod. The push rod is rotatably connected to the printer head. A top block is fixed on one side of the bottom end of the first rotating rod.

[0013] Preferably, a metal elastic sheet is fixed at one end of the push rod away from the second rotating rod, and the outer side of the metal elastic sheet is closely attached to the top block.

[0014] Preferably, the separating assembly includes a rotating groove opened at the top end of the steering block. A connecting block is fixed inside the rotating groove. The bottom end of the first rotating rod is fixed with a rotating block. A docking groove is opened on one side of the rotating block. The rotating block is rotatably connected inside the rotating groove. The connecting block is slidably connected inside the docking groove.

[0015] Preferably, a wedge-shaped block is fixed on one side of the support frame close to the ejector rod. The inclined surface at the bottom end of the wedge-shaped block faces the heating plate side. A positioning column is fixed at the bottom end inside the support frame. The top end of the positioning column is inserted into the bottom end of the steering block. A second spring is sleeved outside the positioning column. The bottom end of the second spring is fixedly connected to the support frame. The top end of the second spring is slidably connected to the steering block. A guiding slope is opened at the bottom end on one side of the docking groove away from the ejector rod.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. For the electro-heating device of a 3D printer described in the present invention, driving the first rotating rod to rotate by the motor can drive the heating plate to move from below the printer head to below the ejector rod, and driving the lifting sleeve by the first rotating rod can make the ejector rod move downward to eject the plastic inside the nozzle, so as to realize the cleaning of the inside of the nozzle and prevent the plastic inside the nozzle from being aged by multiple heating.

[0018] 2. For the electro-heating device of a 3D printer described in the present invention, pushing the push rod by driving the top block by the first rotating rod can make the second rotating rod rotate to drive the cutter to cut off the connection part of the plastic wire inside the printer head and the inside of the nozzle, which is convenient for subsequent cleaning of the plastic inside the nozzle. Description of the Drawings

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a perspective view of the present invention;

[0021] Figure 2 is another perspective view of the present invention;

[0022] Figure 3 is a schematic diagram of the bottom structure of the print head in the present invention;

[0023] Figure 4 is a schematic diagram of the push rod structure in the present invention;

[0024] Figure 5 is a schematic diagram of the heating plate structure in the present invention;

[0025] Figure 6 is a schematic diagram of the lifting sleeve structure in the present invention;

[0026] Figure 7 is a schematic diagram of the rotating rod structure in the present invention;

[0027] Figure 8 is a schematic diagram of the internal structure of the support frame in the present invention;

[0028] Figure 9 is a schematic diagram of the steering block structure in the present invention.

[0029] In the figure: 1, print head; 11, heating plate; 111, clamping post; 112, clamping groove; 113, first spring; 12, cooling fan; 13, nozzle; 2, motor; 21, ejector rod; 211, brush bristles; 22, first rotating rod; 221, top block; 222, first slideway; 223, second slideway; 224, rotating block; 225, docking groove; 23, support frame; 231, positioning post; 232, second spring; 233, wedge-shaped block; 24, steering block; 241, rotating groove; 242, connecting block; 25, lifting sleeve; 251, slider; 252, guide frame; 253, support rod; 254, slide rod; 255, moving sleeve; 3, push rod; 31, metal shrapnel; 32, second rotating rod; 321, cutter. Detailed Embodiments

[0030] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0031] As Figures 1 to 6As shown in the figure, a 3D printer electro-heating device according to an embodiment of the present invention includes a printer head 1. A heating plate 11 is provided below the printer head 1. A nozzle 13 is installed at the bottom end of the heating plate 11. A cooling fan 12 is installed on one side of the printer head 1. A motor 2 is installed on the side of the printer head 1 away from the cooling fan 12. A first rotating rod 22 is fixed to the end of the rotating shaft of the motor 2. A lifting sleeve 25 is sleeved outside the first rotating rod 22. A push rod 21 is provided on one side of the lifting sleeve 25. The push rod 21 can penetrate into the nozzle 13. A turning block 24 is fixed to the side of the heating plate 11 close to the first rotating rod 22. A separating component is provided at the bottom end of the first rotating rod 22;

[0032] The 3D printer is used to print plastic articles. During use, the plastic wire for printing needs to be installed on the printer. Then, one end of the wire is pulled out and the wire is inserted into the printer head 1. The wire is sent into the nozzle 13 by the wire feeding motor of the printer head 1. The wire feeding motor is a component that is installed inside the existing printer head 1. Then, the heating plate 11 is powered on to generate heat, and the heat is conducted into the nozzle 13. At this time, the plastic wire can be melted. The melted plastic will be extruded outside the nozzle 13 under the continuous feeding action of the printer head 1. At this time, the internal mechanism of the 3D printer drives the printer head 1 to move, so that the printer head 1 can extrude the melted plastic onto the processing table for shaping and gradually cool and solidify;

[0033] After each printing, there will be a melted part of the plastic wire remaining in the nozzle 13 and solidifying inside the nozzle 13. When printing needs to be continued next time, the nozzle 13 needs to be heated again by the heating plate 11. At this time, the plastic remaining inside the nozzle 13 will be heated multiple times, resulting in plastic aging and carbonization on the outside. At this time, after the plastic inside the nozzle 13 is extruded and formed, the formed plastic article will have an unstable structure and is prone to breakage or surface defects. Therefore, the plastic remaining inside the nozzle 13 needs to be cleaned after each use. After each printing, the motor 2 is started to rotate. At this time, the motor 2 drives the turning block 24 to rotate through the first rotating rod 22. The turning block 24 drives the heating plate 11 to rotate below the push rod 21. At this time, the heating plate 11 drives the nozzle 13 to rotate to a position aligned with the push rod 21. Then, the motor 2 continues to drive the first rotating rod 22 to rotate. At this time, the separating component can separate the first rotating rod 22 from the turning block 24 to prevent the turning block 24 from interfering with the continuous rotation of the first rotating rod 22. The first rotating rod 22 drives the lifting sleeve 25 to move downward, and the lifting sleeve 25 drives the push rod 21 to move downward. At this time, the push rod 21 can be inserted into the nozzle 13 to push out the solidified plastic inside the nozzle 13. At this time, the melted and solidified plastic wire inside the nozzle 13 can be cleaned, preventing the quality of the formed article from being affected by multiple heating of the plastic.

[0034] AsFigures 1 to 6 As shown, multiple groups of bristles 211 are fixedly arranged at equal intervals on the outside of the ejector rod 21, and the outer side of the bristles 211 can closely adhere to the inner surface of the nozzle 13;

[0035] During the use process, some wire materials may carry foreign objects. If the foreign objects remain inside the nozzle 13 and are extruded along with the molten plastic, it will affect the stability of the molded plastic articles. Therefore, during the process of inserting the ejector rod 21 into the inside of the nozzle 13, the bristles 211 will brush the inner wall of the nozzle 13 along with the ejector rod 21. At this time, the bristles 211 can clean the dirt inside the nozzle 13, keep the inside of the nozzle 13 clean during subsequent use, and prevent impurities from affecting the molding of the plastic.

[0036] As Figures 1 to 5 shown, a support frame 23 is arranged below the motor 2. One side of the support frame 23 is fixedly connected to the printer head 1. Card slots 112 are respectively opened at the four corners of the top end of the heating plate 11. A sliding cavity is arranged inside the printer head 1. A clamping column 111 is movably connected inside the sliding cavity. The bottom end of the clamping column 111 is hemispherical. A first spring 113 is fixed at the top end of the clamping column 111, and the top end of the first spring 113 is fixedly connected to the inner wall of the sliding cavity. The bottom end of the clamping column 111 can be engaged with the card slot 112;

[0037] During the use process, a stable connection needs to be maintained between the heating plate 11 and the printer head 1. Therefore, during the use process, the elastic force of the first spring 113 pushes the clamping column 111 into the inside of the card slot 112. At this time, the heating plate 11 can be aligned at the bottom end of the printer head 1. After use, the heating plate 11 needs to be rotated to the bottom end of the ejector rod 21 for cleaning. During this process, the heating plate 11 is driven to rotate. Under the rotational acting force of the heating plate 11, the clamping column 111 is pushed out of the inside of the card slot 112, and at the same time, the clamping column 111 compresses the first spring 113. At this time, the heating plate 11 can be moved away from the bottom end of the printer head 1. After cleaning, the heating plate 11 needs to be rotated back below the printer head 1. At this time, the heating plate 11 rotates downward to the bottom of the printer head 1, and the edge of the heating plate 11 will contact the bottom of the clamping column 111. Under the guidance of the hemispherical shape at the bottom of the clamping column 111, the clamping column 111 can be lifted. When the heating plate 11 is reset, the four clamping columns 111 will be engaged with the inside of the card slot 112 under the elastic force of the card slot 112. At this time, the heating plate 11 can be limited below the printer head 1, which can facilitate the alignment between the heating plate 11 and the printer head 1 and prevent the plastic wire material of the printer head 1 from not being able to enter the inside of the nozzle 13.

[0038] As Figures 1 to 7 shown, a slider 251 is fixed inside the lifting sleeve 25. A second slideway 223 is arranged on the outside of the first rotating rod 22. The slider 251 can be slidably connected inside the second slideway 223;

[0039] When the ejector rod 21 needs to be inserted into the interior of the nozzle 13, the first rotating rod 22 needs to drive the lifting sleeve 25 to move downward. At this time, the first rotating rod 22 rotates counterclockwise and drives the slider 251 through the second slideway 223. At this time, the slider 251 will drive the lifting sleeve 25 downward under the action of the second slideway 223. During the downward movement of the lifting sleeve 25, it can drive the ejector rod 21 to move downward. At this time, the ejector rod 21 can be inserted into the interior of the nozzle 13, facilitating the use of the ejector rod 21 to clean the nozzle 13. After cleaning, the motor 2 drives the first rotating rod 22 to rotate clockwise. At this time, the first rotating rod 22 will drive the lifting sleeve 25 to rise, and then the first rotating rod 22 drives the turning block 24 to rotate to reset the heating plate 11.

[0040] As Figures 1 to 7 shown, a first slideway 222 is provided above the second slideway 223, and the slider 251 can be slidably connected inside the first slideway 222;

[0041] When the first rotating rod 22 drives the turning block 24 to rotate below the ejector rod 21, in order to prevent the ejector rod 21 from interfering with the heating plate 11 at this time, the first slideway 222 is provided above the second slideway 223. During the rotation of the first rotating rod 22 driving the turning block 24, the slider 251 slides inside the first slideway 222 at this time. At this time, the first slideway 222 can provide a certain buffer space for the downward movement of the ejector rod 21. During this process, the ejector rod 21 will not contact the heating plate 11, and the situation where the ejector rod 21 interferes with the heating plate 11 can be prevented.

[0042] As Figures 1 to 7 shown, a support rod 253 is fixed on one side of the lifting sleeve 25 close to the ejector rod 21. A moving sleeve 255 is sleeved outside the support rod 253. The ejector rod 21 is fixed at the bottom end of the moving sleeve 255. A sliding rod 254 is fixed on one side of the moving sleeve 255 close to the printer head 1. A guide frame 252 is fixed on one side of the printer head 1 close to the sliding rod 254. The sliding rod 254 is slidably connected inside the guide frame 252. An inclined section is provided at the top end of the guide frame 252 for cooperating with the first slideway 222;

[0043] During the use process, the ejector rod 21 will affect the movement of the printer head 1. Therefore, during daily use, the ejector rod 21 will be stored at a position close to the first rotating rod 22. When the ejector rod 21 needs to be cleaned, the motor 2 is started to drive the first rotating rod 22 to rotate. At this time, the first rotating rod 22 drives the first slideway 222 to drive the slider 251 to move downward. The slider 251 drives the lifting sleeve 25 to move downward, so that the lifting sleeve 25 can push the moving sleeve 255 downward through the support rod 253. During the downward movement of the moving sleeve 255, it will slide inside the guide frame 252 through the slide rod 254. The inclined section of the guide frame 252 guides the slide rod 254 in a direction away from the first rotating rod 22. During this process, the slide rod 254 drives the moving sleeve 255 to move away from the first rotating rod 22, so that the moving sleeve 255 can drive the ejector rod 21 to move away from the position close to the first rotating rod 22. Then, the ejector rod 21 will be driven to the position where it needs to be used. When the moving sleeve 255 drives the ejector rod 21 to move downward to a vertical state, the second half of the guide frame 252 will guide the slide rod 254 in a vertical state. At this time, the ejector rod 21 can be stably inserted into the nozzle 13. When the first rotating rod 22 rotates clockwise, the guide frame 252 will guide the slide rod 254 so that the moving sleeve 255 drives the ejector rod 21 to reset, realizing the automatic entry of the ejector rod 21 into the working position and automatic storage.

[0044] As Figures 1 to 7 shown, both sides of the output port at the bottom end of the printer head 1 are rotatably connected with second rotating rods 32. The two second rotating rods 32 are meshed and connected. A cutter 321 is fixed on one side of the two second rotating rods 32 close to each other. On one side of the second rotating rod 32 away from the ejector rod 21, a push rod 3 is meshed and connected. The push rod 3 is rotatably connected with the printer head 1. On one side of the bottom end of the first rotating rod 22, a top block 221 is fixed;

[0045] Before the heating plate 11 rotates, it is necessary to cut off the plastic wire inside the nozzle 13 and the plastic wire inside the printer head 1. During this process, the rotation of the first rotating rod 22 will drive the top block 221 to rotate. After the top block 221 rotates, it will push the end of the push rod 3. After the push rod 3 is pushed, it will drive the second rotating rod 32 to rotate. At this time, the two second rotating rods 32 rotate towards each other. During this process, the two second rotating rods 32 drive the cutter 321 to rotate, and the cutter 321 contacts the wire to cut the wire. After the wire is cut, the heating plate 11 can rotate.

[0046] As Figures 1 to 7 shown, a metal elastic sheet 31 is fixed at one end of the push rod 3 away from the second rotating rod 32, and the outer side of the metal elastic sheet 31 is closely attached to the top block 221;

[0047] When the top block 221 contacts the push rod 3, the metal elastic sheet 31 will be pressed against the top block 221. At this time, the top block 221 will push the metal elastic sheet 31 to drive the push rod 3 to rotate. After the second rotating rod 32 is sheared and closed, the push rod 3 will be in a fixed state. At this time, the push rod 3 keeps the metal elastic sheet 31 in its original position. When the top block 221 continues to rotate, it will deform the metal elastic sheet 31. When the metal elastic sheet 31 is deformed and the top block 221 continues to rotate, the top block 221 will be separated from the metal elastic sheet 31. Then, the heating plate 11 can rotate to the lower part of the ejector rod 21. When the heating plate 11 resets after the nozzle 13 is cleaned, the first rotating rod 22 drives the top block 221 to contact the metal elastic sheet 31 again. The top block 221 pushes the metal elastic sheet 31 to drive the push rod 3 to rotate in the reverse direction and reset. At this time, the push rod 3 can drive the two second rotating rods 32 to reset. When the second rotating rods 32 are reset, they will be blocked by the limiting columns on both sides. At this time, the push rod 3 remains fixed, and the top block 221 will press the metal elastic sheet 31 again to deform it. After deformation, the top block 221 is separated from the metal elastic sheet 31. At this time, the top block 221 resets, and the second rotating rod 32 can be automatically reset.

[0048] As Figures 1 to 9 shown, the separation component includes a rotating groove 241 opened at the top end of the steering block 24. A connecting block 242 is fixed inside the rotating groove 241. A rotating block 224 is fixed at the bottom end of the first rotating rod 22. A docking groove 225 is opened on one side of the rotating block 224. The rotating block 224 is rotatably connected inside the rotating groove 241, and the connecting block 242 is slidably connected inside the docking groove 225.

[0049] During the process of the first rotating rod 22 driving the top block 221 to push the metal elastic sheet 31, the steering block 24 needs to remain fixed. Therefore, a rotating block 224 is fixed at the bottom end of the first rotating rod 22. During the process of the first rotating rod 22 driving the top block 221 to push the metal elastic sheet 31, the first rotating rod 22 simultaneously drives the rotating block 224. The rotating block 224 drives the docking groove 225 to rotate outside the connecting block 242. When the first rotating rod 22 drives the top block 221 to push the metal elastic sheet 31 to move and separate from the metal elastic sheet 31, at this time, the side surface of the docking groove 225 contacts the connecting block 242. When the rotating block 224 rotates, it pushes the connecting block 242, and the connecting block 242 drives the steering block 24 to rotate, enabling the heating plate 11 to rotate. When the first rotating rod 22 rotates in the reverse direction, the other side of the docking groove 225 can push the connecting block 242, and the connecting block 242 can drive the steering block 24 to reset.

[0050] As Figures 1 to 9As shown, a wedge block 233 is fixed on one side of the support frame 23 close to the ejector rod 21. The inclined surface at the bottom end of the wedge block 233 faces the heating plate 11. A positioning post 231 is fixed at the bottom end inside the support frame 23. The top end of the positioning post 231 is inserted into the bottom end of the steering block 24. A second spring 232 is sleeved outside the positioning post 231. The bottom end of the second spring 232 is fixedly connected to the support frame 23, and the top end of the second spring 232 is slidably connected to the steering block 24. A guiding slope is provided at the bottom end on the side of the docking groove 225 away from the ejector rod 21.

[0051] After the slider 251 passes through the first slideway 222, the second slideway 223 at this time will drive the slider 251 to move downward. During this process, the ejector rod 21 needs to move downward, but at the same time, the heating plate 11 needs to remain in a fixed state. Therefore, after the heating plate 11 rotates to the lower side of the ejector rod 21, it needs to be disconnected from the first rotating rod 22. When the heating plate 11 rotates close to the lower side of the ejector rod 21, the side of the steering block 24 will contact the wedge block 233 at this time. The inclined surface of the wedge block 233 will push the steering block 24 downward. At this time, the steering block 24 will squeeze the second spring 232 downward. Under the push of the wedge block 233, the slope of the docking groove 225 will contact the edge at the top end of the connecting block 242. At this time, the first rotating rod 22 drives the rotating block 224 to continue rotating. The rotating block 224 will drive the connecting block 242 through the frictional force on the slope of the docking groove 225 to make the steering block 24 rotate to the lower side of the ejector rod 21. Subsequently, under the limiting action of the support frame 23, the steering block 24 will be kept fixed. At this time, the first rotating rod 22 drives the rotating block 224 to continue rotating, so that the lifting sleeve 25 drives the ejector rod 21 to descend to clean the inside of the nozzle 13. During this process, the slope of the docking groove 225 will push the connecting block 242 downward until the rotating block 224 is completely above the steering block 24. The bottom end of the rotating block 224 is in a smooth state, so that the rotating block 224 will not drive the steering block 24 to rotate when rotating on the top end of the steering block 24. After the ejector rod 21 is cleaned, the first rotating rod 22 rotates in the reverse direction to raise the ejector rod 21. At this time, the first rotating rod 22 will also drive the rotating block 224 to rotate. When the rotating block 224 rotates to the reset position, the second spring 232 will push the steering block 24 upward. At this time, when the rotating block 224 moves back into the inside of the rotating groove 241, the rotating block 224 continues to rotate and will drive the connecting block 242 to rotate through the docking groove 225. At this time, the connecting block 242 drives the heating plate 11 to reset through the steering block 24. During the reset process, the steering block 24 rotates and separates from the wedge block 233. At this time, the elastic force of the second spring 232 continues to push the steering block 24 to reset upward. In this way, it can be realized that the connection and disconnection between the steering block 24 and the first rotating rod 22 are automatically switched according to the working state.

[0052] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A 3D printer electric heating device, characterized in that: The printer head comprises a heating plate disposed below the printer head, a nozzle is installed at the bottom end of the heating plate, a cooling fan is installed at one side of the printer head, a motor is installed at the side of the printer head away from the cooling fan, a first rotating rod is fixed at the end of the rotating shaft of the motor, a lifting sleeve is provided on the outer sleeve of the first rotating rod, a push rod is provided on one side of the lifting sleeve, the push rod can pass through the interior of the nozzle, a steering block is fixed on the side of the heating plate close to the first rotating rod, and a separation component is provided at the bottom end of the first rotating rod.

2. The 3D printer electric heating device according to claim 1, characterized in that: A plurality of groups of bristles are fixed at equal intervals on the outside of the top rod, and the outer sides of the bristles can be in close contact with the inner surface of the nozzle.

3. The 3D printer electric heating device according to claim 1, characterized in that: A support frame is arranged below the motor, one side of the support frame is fixedly connected to the printer head, card slots are provided at the four corners of the top of the heating plate, a sliding cavity is arranged inside the printer head, a card column is movably connected inside the sliding cavity, the bottom end of the card column is arranged in a hemispherical shape, a first spring is fixed to the top end of the card column, the top end of the first spring is fixedly connected to the inner wall of the sliding cavity, and the bottom end of the card column can be engaged with the card slot.

4. The 3D printer electric heating device according to claim 3, characterized in that: A sliding block is fixed inside the lifting sleeve, a second slideway is provided outside the first rotating rod, and the sliding block can be slidably connected inside the second slideway.

5. The 3D printer electric heating device according to claim 4, characterized in that: A first slideway is provided above the second slideway, and the sliding block can be slidably connected to the inside of the first slideway.

6. The 3D printer electric heating device according to claim 5, characterized in that: A support rod is fixed on the side of the lifting sleeve close to the push rod, a movable sleeve is provided on the outer sleeve of the support rod, the push rod is fixed to the bottom end of the movable sleeve, a sliding rod is fixed on the side of the movable sleeve close to the printer head, a guide frame is fixed on the side of the printer head close to the sliding rod, the sliding rod is slidably connected to the inside of the guide frame, and an inclined section is provided on the top of the guide frame for cooperating with the first slide.

7. The 3D printer electric heating device according to claim 1, characterized in that: Second rotating rods are rotatably connected on both sides of the output port at the bottom end of the printer head, the two second rotating rods are meshedly connected, a cutter is fixed on the side of the two second rotating rods close to each other, a push rod is meshedly connected on the side of the second rotating rod away from the ejector rod, the push rod is rotatably connected to the printer head, and a ejector block is fixed on one side of the bottom end of the first rotating rod.

8. The 3D printer electric heating device according to claim 7, characterized in that: A metal spring is fixed to one end of the push rod away from the second rotating rod, and the outer side of the metal spring is closely attached to the top block.

9. The 3D printer electric heating device according to claim 7, characterized in that: The separation component includes a rotating groove opened at the top of the steering block, a connecting block is fixed inside the rotating groove, a rotating block is fixed at the bottom end of the first rotating rod, a docking groove is opened on one side of the rotating block, the rotating block is rotatably connected to the inside of the rotating groove, and the connecting block is slidably connected to the inside of the docking groove.

10. The 3D printer electric heating device according to claim 9, characterized in that: A wedge block is fixed on one side of the support frame close to the push rod, and the inclined surface of the bottom end of the wedge block faces the heating plate. A positioning column is fixed on the bottom end of the support frame, and the top end of the positioning column is inserted into the bottom end of the steering block. A second spring is sleeved on the outer side of the positioning column, and the bottom end of the second spring is fixedly connected to the support frame, and the top end of the second spring is slidably connected to the steering block. A guide slope is provided on the bottom end of the docking groove away from the push rod.

Images