3D printer head

Abstract

The utility model relates to the technical field of 3D printing, in particular to a 3D printing head. According to the technical scheme, the device comprises a nozzle and a fixing base, a feeding box is fixedly installed at the position, close to the upper surface, of the front surface of the fixing base, a heating block is fixedly installed at the position, close to the lower surface, of the front surface of the fixing base, and a communicating hole is formed in the middle of the upper surface of the heating block; a feeding pipe is fixedly connected to the position, above the communicating hole, of the upper surface of the heating block, a nozzle is fixedly connected to the position, below the communicating hole, of the lower surface of the heating block, an annular groove is formed in the position, close to the upper surface, of the inner wall of the feeding pipe, and a sealing ring is arranged in the annular groove; and an air pump is fixedly mounted on one side of the front surface of the fixed seat. After printing of the 3D printing head is finished, molten materials remaining in the nozzle can be conveniently removed, the molten materials are prevented from being cooled and solidified in the nozzle, and subsequent use of the 3D printing head is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a 3D printer head. Background Art

[0002] 3D printing is a technology that uses digital model files as the basis and uses bondable materials such as powdered metal or plastic to construct objects by printing layer by layer. The 3D printer head plays a key role in the layer-by-layer printing process, melting and extruding the raw materials so that the raw materials can be printed into the desired shape in a layer-by-layer manner.

[0003] After the current 3D printer head is used, a certain amount of molten material will remain inside the nozzle, which will solidify inside the nozzle after cooling. The nozzle needs to be disassembled for cleaning, which is a cumbersome operation. Therefore, we propose a 3D printer head. Utility Model Content

[0004] The utility model aims to provide a 3D printer head, which has the advantage of being able to easily remove molten material remaining in the nozzle after the 3D printer head finishes printing, and avoid cooling and solidifying inside the nozzle, so as to facilitate the subsequent use of the 3D printer head. The utility model solves the problem that after the current 3D printer head is used, a certain amount of molten material will remain in the nozzle, which will solidify inside the nozzle after cooling, and the nozzle needs to be disassembled for cleaning, which is a cumbersome operation.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a 3D printer head, comprising a nozzle and a fixed seat, a feed box is fixedly installed on the front surface of the fixed seat near the upper surface, a heating block is fixedly installed on the front surface of the fixed seat near the lower surface, a connecting hole is provided at the middle position of the upper surface of the heating block, a feed pipe is fixedly connected to the upper surface of the heating block above the connecting hole, a nozzle is fixedly connected to the lower surface of the heating block below the connecting hole, an annular groove is provided on the inner wall of the feed pipe near the upper surface, a sealing ring is provided inside the annular groove, an air pump is fixedly installed on one side of the front surface of the fixed seat, and the end of the air pump output pipe is fixedly connected to the outer surface of the feed pipe near the position below the sealing ring.

[0006] Preferably, rollers are symmetrically rotatably installed at both sides of the feeding box through a rotating shaft, a rotating motor is fixedly installed on one side of the front surface of the feeding box, and the end of the rotating motor output shaft is fixedly connected to the end of the rotating shaft.

[0007] Preferably, transmission gears are fixedly sleeved on the outer surfaces of the two rotating shafts, and the two transmission gears are meshed with each other.

[0008] Preferably, the outer surfaces of the two rollers are both provided with annular grooves.

[0009] Preferably, a trumpet tube is fixedly connected to the middle position of the upper surface of the feeding box.

[0010] Preferably, mounting holes are symmetrically arranged at both sides of the front surface of the fixing seat.

[0011] Preferably, an electric heating ring is fixedly installed inside the heating block near the connecting hole.

[0012] Preferably, a temperature controller is fixedly mounted on a side of the front surface of the fixing seat facing away from the air pump, and a temperature sensor is fixedly mounted on a side inside the heating block.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model achieves the effect of facilitating the removal of the molten material remaining in the nozzle after the 3D printing head is finished by arranging a fixing seat, a feeding box, a feeding pipe, a heating block, a connecting hole, a nozzle, an air pump, an annular groove and a sealing ring, so as to avoid cooling and solidifying inside the nozzle, so as to facilitate the subsequent use of the 3D printing head. After the 3D printing wire passes through the feeding box, it enters the connecting hole through the feeding pipe, is heated into a molten state, enters the nozzle, and is ejected from the nozzle. When the 3D printing head is finished printing, the air pump works to allow gas to enter the feed pipe, and the 3D printing wire in the feed pipe passes through the sealing ring. The sealing ring seals the gap between the 3D printing wire and the feed pipe, and the gas in the feed pipe flows toward the nozzle, forcing the molten material in the connecting hole and the nozzle to be ejected from the nozzle, thereby removing the molten material remaining in the nozzle, and facilitating cleaning and operation.

[0015] 2. The utility model sets an annular groove to limit the 3D printing wire being transmitted, so that the 3D printing wire can better pass through the feeding box and enter the feeding pipe.

[0016] 3. The utility model provides a trumpet tube so that the 3D printing wire can better enter the feeding box, thereby preventing the outer surface of the 3D printing wire from contacting and wearing with the sharp edge of the tube mouth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0020] Figure 4 It is a schematic diagram of the side sectional structure of the utility model.

[0021] Figure numerals: 1. nozzle; 2. temperature sensor; 3. feed pipe; 4. rotating motor; 5. feed box; 6. horn tube; 7. fixing seat; 8. mounting hole; 9. temperature controller; 10. heating block; 11. electric heating ring; 12. rotating shaft; 13. rotating roller; 14. connecting hole; 15. air pump; 16. annular groove; 17. sealing ring; 18. annular groove; 19. transmission gear. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] like Figure 1-Figure 4 As shown, a 3D printer head proposed by the utility model includes a nozzle 1 and a fixing seat 7, and mounting holes 8 are symmetrically provided at both sides of the front surface of the fixing seat 7. The two mounting holes 8 cooperate with screws to fix the fixing seat 7 on the 3D printer, and a feed box 5 is fixedly installed at the front surface of the fixing seat 7 near the upper surface. Rollers 13 are symmetrically rotatably installed at both sides of the inside of the feed box 5 through a rotating shaft 12. A rotating motor 4 is fixedly installed on one side of the front surface of the feed box 5, and the end of the output shaft of the rotating motor 4 is fixedly connected to the end of the rotating shaft 12. The rotating motor 4 drives one of the rollers 13 to rotate. Transmission gears 19 are fixedly sleeved on the outer surfaces of the two rotating shafts 12, and the two transmission gears 19 are meshed with each other. The two rollers 13 are transmitted through the two meshing transmission gears 19.

[0024] The outer surfaces of the two rollers 13 are both provided with annular grooves 18, which play a role in limiting the 3D printing wire being transmitted, so that the 3D printing wire can better pass through the feeding box 5 and enter the feeding pipe 3. The middle position of the upper surface of the feeding box 5 is fixedly connected with a trumpet tube 6, which allows the 3D printing wire to better enter the inside of the feeding box 5 to avoid the outer surface of the 3D printing wire and the sharp edge of the pipe mouth from contacting and wearing. A heating block 10 is fixedly installed near the lower surface of the front surface of the fixing seat 7. The middle position of the upper surface of the heating block 10 A connecting hole 14 is provided at the position, and an electric heating ring 11 is fixedly installed near the connecting hole 14 inside the heating block 10. When the 3D printing wire passes through the connecting hole 14, it is heated to a molten state by the electric heating ring 11. A temperature controller 9 is fixedly installed on the side of the front surface of the fixing seat 7 away from the air pump 15. A temperature sensor 2 is fixedly installed on one side of the heating block 10. The temperature sensor 2 detects the heating temperature of the heating block 10, and the monitoring signal is transmitted to the temperature controller 9. The temperature controller 9 controls the electric heating ring 11 to make the heating and melting temperature of the 3D printing wire constant.

[0025] A feed pipe 3 is fixedly connected to the upper surface of the heating block 10 at a position above the connecting hole 14. The feed pipe 3 and the fixed seat 7 are both made of heat-insulating materials to prevent heat transfer from causing the 3D printing wire inside the feed pipe 3 and the feeding box 5 to melt. A nozzle 1 is fixedly connected to the lower surface of the heating block 10 at a position below the connecting hole 14. An annular groove 16 is provided on the inner wall of the feed pipe 3 near the upper surface, and a sealing ring 17 is provided inside the annular groove 16. An air pump 15 is fixedly installed on one side of the front surface of the fixed seat 7, and the end of the output pipe of the air pump 15 is fixedly connected to the outer surface of the feed pipe 3 near the position below the sealing ring 17.

[0026] When the utility model is in use, the 3D printing wire passes through the feeding box 5 and then enters the connecting hole 14 through the feeding pipe 3. After being heated to a molten state, it enters the nozzle 1 and is ejected from the nozzle 1. When the 3D printing head finishes printing, the air pump 15 works to allow gas to enter the feeding pipe 3. The 3D printing wire in the feeding pipe 3 passes through the sealing ring 17. The sealing ring 17 seals the gap between the 3D printing wire and the feeding pipe 3. The gas in the feeding pipe 3 flows toward the nozzle 1, forcing the molten material in the connecting hole 14 and the nozzle 1 to be ejected from the nozzle 1, thereby removing the molten material remaining in the nozzle 1 for subsequent use.

[0027] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A 3D printer head, comprising a nozzle (1) and a fixing seat (7), characterized in that: A feeding box (5) is fixedly mounted on the front surface of the fixing seat (7) near the upper surface, a heating block (10) is fixedly mounted on the front surface of the fixing seat (7) near the lower surface, a connecting hole (14) is provided at the middle position of the upper surface of the heating block (10), a feeding pipe (3) is fixedly connected to the upper surface of the heating block (10) at a position above the connecting hole (14), a nozzle (1) is fixedly connected to the lower surface of the heating block (10) at a position below the connecting hole (14), an annular groove (16) is provided on the inner wall of the feeding pipe (3) near the upper surface, a sealing ring (17) is provided inside the annular groove (16), an air pump (15) is fixedly mounted on one side of the front surface of the fixing seat (7), and the end of the output pipe of the air pump (15) is fixedly connected to the outer surface of the feeding pipe (3) near a position below the sealing ring (17).

2. A 3D printer head according to claim 1, characterized in that: Rotating rollers (13) are symmetrically rotatably mounted at both sides of the feed box (5) via a rotating shaft (12), a rotating motor (4) is fixedly mounted on one side of the front surface of the feed box (5), and the end of the output shaft of the rotating motor (4) is fixedly connected to the end of the rotating shaft (12).

3. A 3D printer head according to claim 2, characterized in that: The outer surfaces of the two rotating shafts (12) are both fixedly sleeved with transmission gears (19), and the two transmission gears (19) are meshed with each other.

4. A 3D printer head according to claim 2, characterized in that: The outer surfaces of the two rotating rollers (13) are both provided with an annular groove (18).

5. A 3D printer head according to claim 1, characterized in that: A trumpet tube (6) is fixedly connected to the middle position of the upper surface of the feeding box (5).

6. A 3D printer head according to claim 1, characterized in that: Mounting holes (8) are symmetrically arranged at two sides of the front surface of the fixing seat (7).

7. A 3D printer head according to claim 1, characterized in that: An electric heating ring (11) is fixedly installed inside the heating block (10) near the connecting hole (14).

8. A 3D printer head according to claim 1, characterized in that: A temperature controller (9) is fixedly mounted on the side of the front surface of the fixing seat (7) facing away from the air pump (15), and a temperature sensor (2) is fixedly mounted on the inner side of the heating block (10).

Images