CN112192843B

CN112192843B - Automatic blockage clearing device for 3D printing nozzle and using method

Info

Publication number: CN112192843B
Application number: CN202010960169.7A
Authority: CN
Inventors: 祝勇仁; 赖全忠; 毛德锋; 吴俊�; 韦应千
Original assignee: Hangzhou Himalaya Information Technology Co ltd
Current assignee: Hangzhou Himalaya Information Technology Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2022-03-01
Anticipated expiration: 2040-09-14
Also published as: CN112192843A

Abstract

The invention provides an automatic blockage removing device for a 3D printing nozzle, which comprises a bottom plate and a nozzle, wherein a first rectangular frame is fixedly installed on the bottom plate, a second rectangular frame is arranged in the first rectangular frame, a first motor is fixedly installed at the top of the first rectangular frame, a first lead screw is rotatably connected onto the first motor, and the first lead screw sequentially penetrates through the top of the first rectangular frame and the second rectangular frame and is then rotatably connected with the bottom of the first rectangular frame, and the automatic blockage removing device has the beneficial effects that: the self-adaptive cleaning device can self-adaptively clamp different spray heads, can quickly and effectively clean solidified printing materials in spray heads of different types, cannot damage the inner walls of the spray heads, has a good cleaning effect, does not need manual operation in the whole process, and is simple, efficient, convenient and quick, and high in practicability.

Description

Automatic blockage clearing device for 3D printing nozzle and using method

Technical Field

The invention relates to the technical field of 3D printing, in particular to an automatic blockage clearing device for a 3D printing nozzle and a using method.

Background

At present, 3D printing (3DP), which is one of the rapid prototyping technologies, is also called additive manufacturing, and is a technology for constructing an object by using an adhesive material such as powdered metal or plastic and the like and by using a digital model file as a basis and by using a layer-by-layer printing method, and 3D printing is usually implemented by using a digital technical material printer, is usually used for manufacturing models in the fields of mold manufacturing, industrial design and the like, and is then gradually used for directly manufacturing some products, and there are already parts printed by using such a technology. The technology is applied to jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms and other fields, and in order to ensure easy outflow of printing materials in 3D printing at present, most of spray heads are conical, but after 3D printing is finished, the equipment is closed, the printing raw materials in the spray head are gradually solidified, and further the spray head is blocked, if the cleaning is not carried out, the next printing is influenced, because the spray head is conical, the cleaning can not be carried out by using machine equipment, therefore, the prior nozzle blockage removal is manually operated, solidified printing materials in the nozzle are gouged out by a pry knife, however, the mode is low in efficiency, easy to clean and easy to damage the inner wall of the spray head, and further influences the printing effect.

Disclosure of Invention

The automatic blockage removing device for the 3D printing nozzle is used for solving the problems in the prior art, can be used for carrying out self-adaptive clamping on different nozzles, can be used for quickly and effectively removing solidified printing materials in different types of nozzles, does not need manual operation in the whole process, and is simple, efficient, convenient, quick and high in practicability.

The invention adopts the technical scheme for solving the technical problems that: the automatic blockage removing device for the 3D printing nozzle comprises a base plate and a nozzle, wherein a first rectangular frame is fixedly installed on the base plate, a second rectangular frame is arranged in the first rectangular frame, a first motor is fixedly installed at the top of the first rectangular frame, a first lead screw is rotatably connected onto the first motor, the first lead screw sequentially penetrates through the top of the first rectangular frame and the second rectangular frame and then is rotatably connected with the bottom of the first rectangular frame, first auxiliary slide bars which penetrate through the second rectangular frame and are horizontally aligned with the first lead screw are fixedly installed on the inner wall of the top and the inner wall of the bottom of the first rectangular frame, a round box is arranged in the first rectangular frame, a second motor is fixedly installed on the inner wall of the left end of the second rectangular frame, an output shaft of the second motor is fixedly connected with one end of the round box, a first rotating shaft which is rotatably connected with the inner wall of the right end of the second rectangular frame is fixedly installed at the right end of the round box, the inner walls of the front end and the rear end of the round box are provided with first channels communicated with the outside, the inner walls of the round box are rotatably connected with round plates, the outer sides of the round plates are provided with annular grooves, the bottom of the annular groove is fixedly provided with a first gear with the diameter of an addendum circle smaller than the inner diameter of the round box, the bottom of the round box is provided with an opening, the front end and the rear end of the round box are fixedly provided with a first supporting plate and a second supporting plate which extend to the lower part of the round box, a second fixing plate positioned below the round box is fixedly arranged between the first supporting plate and the second supporting plate, a third motor is fixedly arranged on the second supporting plate, an output shaft of the third motor passes through the second supporting plate and is rotatably connected with the first supporting plate, a second gear which is positioned between the first supporting plate and is meshed with the first gear is fixedly arranged on the outer side of the output shaft of the third motor, the center of the round plates is provided with a second channel communicated with the first channels and coincided with the axes of the first channels, the improved sprayer comprises a circular plate, and is characterized in that a first cavity and a second cavity are distributed in the circular plate in an array manner, a first sliding plate is connected inside the first cavity in a sliding manner, a clamping column penetrating through the first cavity and then reaching the second channel is fixedly mounted at one end of the first sliding plate, a sliding column penetrating through the first cavity and then reaching the second cavity is fixedly mounted at the other end of the first sliding plate, a second sliding plate fixedly connected with the sliding column is slidably connected inside the second cavity, a metal block is arranged inside the second sliding plate, a first electromagnet capable of adsorbing the metal block is fixedly mounted at one end, far away from the second sliding plate, of the second cavity, a first spring surrounding the sliding column is fixedly connected to one end, close to the second cavity, of the first sliding plate and the first cavity, a sprayer penetrates through the first channel and the second channel, and a clamping groove capable of containing the clamping column is formed in the outer side of the sprayer.

For further improvement, a first cylinder is fixedly mounted on the bottom plate, and a semicircular bearing which can be attached to the outer side of the spray head is fixedly mounted at the top of the first cylinder. This structure can assist the shower nozzle to support.

Further perfect, fixed mounting has the cushion cap on the bottom plate, the cushion cap top is equipped with the second cylinder, the second cylinder outside is rotated and is connected with and cushion cap top fixed mounting has the third backup pad, second cylinder outside fixed mounting has the third gear, cushion cap top fixed mounting has the fourth motor of circular telegram auto-lock, fixed mounting has the fourth gear with third gear engagement on the fourth motor output shaft, second cylinder one end is equipped with the grinding post, grinding capital portion is equipped with the holding tank, both ends inner wall fixed mounting has the fixed axle about the holding tank, the fixed axle outside is rotated and is connected with the cardboard that can rotate out the holding tank, the inside magnet that is equipped with of cardboard, the inside second electro-magnet that can repel or adsorb magnet that is equipped with of grinding post. The structure can hook out the printing material which is cut completely in the spray head.

Further perfect, grinding post outside fixed mounting has the cam, the cam overhang is the same with holding tank open end orientation, cushion cap top fixed mounting has the box body, the inside sliding connection of box body has the kicking block that can be pressed by the cam, the kicking block passes box body top inner wall, kicking block bottom fixed mounting have with box body inner wall bottom fixed connection's second spring. This structure can assist the cardboard to collude the printing material in the shower nozzle.

Further perfection, a gyroscope sensor for converting the second electromagnetic iron magnetic pole is arranged in the grinding column. The structure can sense whether the grinding column is in a rotating state.

Further perfection, cardboard top is equipped with the grinding layer that aligns with the grinding post outside.

Further perfect, box body both ends inner wall is equipped with the spacing groove, fixed mounting has the stopper with spacing groove sliding connection on the kicking block.

A use method of an automatic blockage clearing device for a 3D printing nozzle comprises the following steps:

firstly, installation: the spray head extends into the second channel, so that the inclined surface of the spray head pushes the clamping column to contract until the clamping column is matched with the clamping groove, and the clamping column clamps the spray head through the clamping groove;

secondly, angle adjustment: starting a second motor to drive the round box to rotate, and further driving the spray head to rotate, so that the bottom of the spray head is flush with the horizontal line;

thirdly, auxiliary supporting: starting a first air cylinder, and enabling an output shaft of the first air cylinder to ascend to drive the inner wall of the semicircular bearing to be attached to the bottom of the spray head;

fourthly, clearing the blockage: the fourth motor is started to drive the third gear to rotate, the third gear drives the second air cylinder to rotate, the second air cylinder rotates to drive the grinding column to rotate, the gyroscope sensor senses the rotation when the grinding column rotates, so that the second electromagnet adsorbs the magnet, so that the clamping plate is positioned in the containing groove, the second cylinder drives the grinding column to extend out of the spray head, the containing groove part on the grinding column penetrates through the spray head and is positioned outside the spray head, the top of the outer side of the grinding column is tangent to the bottom of the inner wall of the spray head, when the grinding column extends out, the cam abuts against and presses the ejector block, a third motor is started at the moment, the third motor drives a second gear to rotate, the second gear rotates to drive a first gear to rotate, the first gear rotates to drive a circular plate to rotate, the circular plate rotates to drive the clamping column to rotate, the clamping column rotates to drive the spray head to rotate, the spray head rotates to enable the grinding column to cut along the inner wall of the spray head, and then printing materials attached to the interior of the spray head are separated from the inner wall of the spray head;

fifthly, discharging: after the sprayer rotates for a circle, the third motor and the fourth motor are turned off, the fourth motor is turned off to enable the grinding column to stop rotating, after the grinding column stops rotating, the gyroscope sensor senses stop, the second electromagnetic iron pole is made to repel the magnet, the clamping plate is made to stretch out of the accommodating groove, the fourth motor is in a non-self-locking state when the power is off, at the moment, the top block pushes the cam to rotate due to the action of the second spring, the cam is always located at the protruding end upwards, the grinding column is driven to rotate due to the rotation of the cam, the clamping plate is driven to rotate by the rotation of the grinding column and corresponds to the inside of the sprayer all the time upwards, at the moment, the fourth motor is powered on to be in a self-locking state, the second cylinder is prevented from rotating, at the moment, the second cylinder drives the grinding column to shrink, the printing material solidifying block inside the sprayer is hooked through the clamping plate when the grinding column shrinks, and the printing material solidifying block is pulled out of the sprayer to finish discharging.

The invention has the beneficial effects that: the self-adaptive cleaning device can self-adaptively clamp different spray heads, can quickly and effectively clean solidified printing materials in spray heads of different types, cannot damage the inner walls of the spray heads, has a good cleaning effect, does not need manual operation in the whole process, and is simple, efficient, convenient and quick, and high in practicability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a working diagram of the present invention;

FIG. 4 is an enlarged view A of a portion of FIG. 1;

FIG. 5 is a partial enlarged view B of FIG. 1;

FIG. 6 is an enlarged view C of a portion of FIG. 1;

FIG. 7 is a schematic view of the grinding cylinder according to the present invention;

FIG. 8 is a three-dimensional view of the round box of the present invention;

FIG. 9 is a structural view of the round case of the present invention.

Description of reference numerals: the device comprises a bottom plate 1, a first air cylinder 2, a semicircular bearing 3, a second square frame 4, a first square frame 5, a first lead screw 6, a spray head 7, a third support plate 8, a first cavity 9, a second air cylinder 10, a third gear 11, a fourth motor 12, a fourth gear 13, a bearing platform 14, a second motor 15, a first motor 16, a second channel 17, a first auxiliary slide bar 18, a first rotating shaft 19, a first channel 20, a clamping groove 21, a clamping column 22, a first sliding plate 23, a first spring 24, a metal block 25, a second sliding plate 26, a second cavity 27, a third motor 28, a second gear 29, a second fixing plate 30, an opening 31, a first gear 32, a first electromagnet 33, a round box 34, a magnet 35, a cam 36, a second electromagnet 37, a limiting block 38, a box body 39, a second spring 40, a limiting groove 41, a top block 42, a gyroscope sensor 43, a grinding column 44, a containing groove 45, a 46, a fixed shaft 44, a grinding column, a first auxiliary column, a second auxiliary shaft, a second auxiliary, The clamping plate 47, the grinding layer 48, the circular plate 49, the annular groove 50, the first supporting plate 51, the second supporting plate 52 and the sliding column 53.

Detailed Description

The invention will be further described with reference to the accompanying drawings in which:

referring to figures 1 to 9: the automatic blockage removing device for the 3D printing nozzle in the embodiment comprises a base plate 1 and a nozzle 7, wherein a first clip frame 5 is fixedly installed on the base plate 1, a second clip frame 4 is arranged inside the first clip frame 5, a first motor 16 is fixedly installed at the top of the first clip frame 5, a first lead screw 6 is connected to the first motor 16 in a rotating manner, the first lead screw 6 sequentially penetrates through the top of the first clip frame 5 and the second clip frame 4 and then is connected with the bottom of the first clip frame 5 in a rotating manner, a first auxiliary slide bar 18 which penetrates through the second clip frame 4 and is horizontally aligned with the first lead screw 6 is fixedly installed on the inner wall of the top and the inner wall of the bottom of the first clip frame 5, a round box 34 is arranged inside the first clip frame 5, a second motor 15 is fixedly installed on the inner wall of the left end of the second clip frame 4, and an output shaft of the second motor 15 is fixedly connected with one end of the round box 34, the round box 34 right-hand member fixed mounting have with the second time frame 4 right-hand member inner wall rotate the first pivot 19 of being connected, the round box 34 front and back both ends inner wall is equipped with the first passageway 20 of intercommunication external world, the round box 34 inner wall rotates and is connected with the plectane 49, the plectane 49 outside is equipped with the ring channel 50, ring channel 50 bottom fixed mounting have the addendum circle diameter to be less than the first gear 32 of the internal diameter of round box 34, round box 34 bottom is equipped with opening 31, both ends fixed mounting has first backup pad 51 and the second backup pad 52 that extends to round box 34 below around the round box 34, fixed mounting has the second fixed plate 30 that is located round box 34 below between first backup pad 51 and the second backup pad 52, fixed mounting has third motor 28 on the second backup pad 52, third motor 28 output shaft rotates with first backup pad 51 after passing second backup pad 52 and is connected, a second gear 29 which is positioned between a first support plate 51 and a second support plate 52 and is engaged with the first gear 32 is fixedly installed at the outer side of the output shaft of the third motor 28, a second channel 17 which is communicated with the first channel 20 and is coincident with the axis of the first channel is arranged at the center of the circular plate 49, a first cavity 9 and a second cavity 27 are distributed in the circular plate 49 in an array manner, a first sliding plate 23 is connected in the first cavity 9 in a sliding manner, a clamping column 22 which penetrates through the first cavity 9 and then reaches the second channel 17 is fixedly installed at one end of the first sliding plate 23, a sliding column 53 which penetrates through the first cavity 9 and then reaches the second cavity 27 is fixedly installed at the other end of the first sliding plate 23, a second sliding plate 26 which is fixedly connected with the sliding column 53 is connected in the second cavity 27 in a sliding manner, a metal block 25 is arranged in the second sliding plate 26, a first electromagnet 33 which can adsorb the metal block 25 is fixedly installed at one end of the second cavity 27 far away from the second sliding plate 26, the first sliding plate 23 and one end of the first cavity 9 close to the second cavity 27 are fixedly connected with a first spring 24 surrounding a sliding column 53, the spray head 7 passes through the first channel 20 and the second channel 17, a clamping groove 21 capable of accommodating a clamping column 22 is arranged on the outer side of the spray head 7, a first cylinder 2 is fixedly mounted on the bottom plate 1, a semicircular bearing 3 capable of being attached to the outer side of the spray head 7 is fixedly mounted at the top of the first cylinder 2, a bearing platform 14 is fixedly mounted on the bottom plate 1, a second cylinder 10 is arranged above the bearing platform 14, a third supporting plate 8 is fixedly mounted at the top of the bearing platform 14 and rotatably connected to the outer side of the second cylinder 10, a third gear 11 is fixedly mounted on the outer side of the second cylinder 10, a fourth motor 12 which is electrified and self-locked is fixedly mounted at the top of the bearing platform 14, and a fourth gear 13 which is meshed with the third gear 11 is fixedly mounted on the output shaft of the fourth motor 12, a grinding column 44 is arranged at one end of the second cylinder 10, an accommodating groove 45 is arranged at the top of the grinding column 44, a fixed shaft 46 is fixedly arranged on the inner walls of the left end and the right end of the accommodating groove 45, a clamping plate 47 capable of rotating out of the accommodating groove 45 is rotatably connected to the outer side of the fixed shaft 46, a magnet 35 is arranged in the clamping plate 47, a second electromagnet 37 capable of repelling or adsorbing the magnet 35 is arranged in the grinding column 44, a cam 36 is fixedly arranged on the outer side of the grinding column 44, the protruding end of the cam 36 and the opening end of the accommodating groove 45 face the same direction, a box body 39 is fixedly arranged at the top of the bearing platform 14, a top block 42 capable of being pressed by the cam 36 is slidably connected in the box body 39, the top block 42 penetrates through the inner wall of the top of the box body 39, a second spring 40 fixedly connected with the bottom of the inner wall of the box body 39 is fixedly arranged at the bottom of the top block 42, and a gyroscope sensor 43 for converting the magnetic pole of the second electromagnet 37 is arranged in the grinding column 44, the top of the clamping plate 47 is provided with a grinding layer 48 aligned with the outer side of the grinding column 44, the inner walls of the two ends of the box body 39 are provided with limiting grooves 41, and the top block 42 is fixedly provided with a limiting block 38 connected with the limiting grooves 41 in a sliding manner.

Referring to figures 1 to 9: a use method of an automatic blockage clearing device for a 3D printing nozzle comprises the following steps:

firstly, installation: the spray head 7 extends into the second channel 17, so that the inclined surface of the spray head 7 pushes the clamping column 22 to contract until the clamping column 22 is matched with the clamping groove 21, and at the moment, the clamping column 22 clamps the spray head 7 through the clamping groove 21;

secondly, angle adjustment: starting the second motor 15 to drive the round box 34 to rotate, and further driving the spray head 7 to rotate, so that the bottom of the spray head 7 is flush with the horizontal line;

thirdly, auxiliary supporting: starting the first air cylinder 2, and lifting an output shaft of the first air cylinder 2 to drive the inner wall of the semicircular bearing 3 to be attached to the bottom of the spray head 7;

fourthly, clearing the blockage: the fourth motor 12 is started to drive the third gear 11 to rotate, the third gear 11 rotates to drive the second cylinder 10 to rotate, the second cylinder 10 rotates to drive the grinding column 44 to rotate, the gyroscope sensor 43 senses rotation when the grinding column 44 rotates, the second electromagnet 37 adsorbs the magnet 35, the clamping plate 47 is located in the accommodating groove 45, the second cylinder 10 drives the grinding column 44 to extend out and penetrate through the spray head 7, the part of the accommodating groove 45 on the grinding column 44 penetrates through the spray head 7 and is located outside the spray head 7, the top of the outer side of the grinding column 44 is tangent to the bottom of the inner wall of the spray head 7, when the grinding column 44 extends out, the cam 36 supports and presses the jacking block 42, the third motor 28 is started, the third motor 28 drives the second gear 29 to rotate, the second gear 29 rotates to drive the first gear 32 to rotate, the first gear 32 rotates to drive the circular plate 49 to rotate, the circular plate 49 rotates to drive the clamping column 22 to rotate, and the clamping column 22 rotates to drive the spray head 7 to rotate, the spray head 7 rotates to enable the grinding column 44 to cut along the inner wall of the spray head 7, and further enable printing materials attached to the interior of the spray head 7 to be separated from the inner wall of the spray head 7;

fifthly, discharging: when the nozzle 7 rotates for a circle, the third motor 28 and the fourth motor 12 are turned off, the fourth motor 12 is turned off to stop the rotation of the grinding column 44, when the rotation of the grinding column 44 is stopped, the gyroscope sensor 43 senses the stop to enable the magnetic pole of the second electromagnet 37 to switch the repelling magnet 35, so that the clamping plate 47 extends out of the accommodating groove 45, the fourth motor 12 is in a non-self-locking state when the power is off, at the moment, the top block 42 pushes the cam 36 to rotate due to the action of the second spring 40, so that the cam 36 is always positioned at the protruding end upwards, the grinding column 44 is driven to rotate due to the rotation of the cam 36, the grinding column 44 is driven to rotate by the rotation of the grinding column 44, the clamping plate 47 is driven by the rotation of the grinding column 44 to always upwards correspond to the inside of the nozzle 7, at the moment, the fourth motor 12 is powered on in a self-locking state to prevent the rotation of the second cylinder 10, at the moment, the second cylinder 10 drives the grinding column 44 to contract, the printing material solid block inside the nozzle 7 is hooked by the clamping plate 47 when the grinding column 44 contracts, and pulled out of the spray head 7 to complete the discharge.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides an automatic clear stifled device of 3D printing shower nozzle, includes bottom plate (1), shower nozzle (7), characterized by: the bottom plate (1) is fixedly provided with a first shape-returning frame (5), a second shape-returning frame (4) is arranged in the first shape-returning frame (5), the top of the first shape-returning frame (5) is fixedly provided with a first motor (16), the first motor (16) is connected with a first lead screw (6) in a rotating manner, the first lead screw (6) sequentially penetrates through the top of the first shape-returning frame (5) and the bottom of the first shape-returning frame (5) after the second shape-returning frame (4), a first auxiliary slide bar (18) which penetrates through the second shape-returning frame (4) and is horizontally aligned with the first lead screw (6) is fixedly arranged on the inner wall at the top and the inner wall at the bottom of the first shape-returning frame (5), a round box (34) is arranged in the first shape-returning frame (5), a second motor (15) is fixedly arranged on the inner wall at the left end of the second shape-returning frame (4), and an output shaft of the second motor (15) is fixedly connected with one end of the round box (34), the utility model discloses a round box, including circle box (34), circle box (34) right-hand member fixed mounting have with the second return shape frame (4) right-hand member inner wall rotate the first pivot (19) of being connected, both ends inner wall is equipped with first passageway (20) in the intercommunication external world around circle box (34), circle box (34) inner wall rotates and is connected with plectane (49), the plectane (49) outside is equipped with ring channel (50), ring channel (50) bottom fixed mounting has tooth top circle diameter to be less than circle box (34) internal diameter first gear (32), circle box (34) bottom is equipped with opening (31), both ends fixed mounting has first backup pad (51) and second backup pad (52) that extend to circle box (34) below around circle box (34), fixed mounting has second fixed plate (30) that are located circle box (34) below between first backup pad (51) and second backup pad (52), fixed mounting has third motor (28) on second backup pad (52), the output shaft of the third motor (28) penetrates through the second support plate (52) and then is rotatably connected with the first support plate (51), a second gear (29) which is positioned between the first support plate (51) and the second support plate (52) and is meshed with the first gear (32) is fixedly installed on the outer side of the output shaft of the third motor (28), a second channel (17) which is communicated with the first channel (20) and is coincided with the axis of the first channel is arranged in the center of the circular plate (49), a first cavity (9) and a second cavity (27) are distributed in the circular plate (49) in an array manner, a first sliding plate (23) is connected in the first cavity (9) in a sliding manner, a clamping column (22) which penetrates through the first cavity (9) and then reaches the second channel (17) is fixedly installed at one end of the first sliding plate (23), and a sliding column (53) which penetrates through the first cavity (9) and then reaches the second cavity (27) is fixedly installed at the other end of the first sliding plate (23), the utility model discloses a shower nozzle, including first cavity (27), second cavity (27), first cavity (9), first cavity (27), second cavity (27) inside sliding connection have with slip post (53) fixed connection's second sliding plate (26), second sliding plate (26) inside is equipped with metal block (25), second cavity (27) inside is kept away from second sliding plate (26) one end fixed mounting and is had first electro-magnet (33) that can adsorb metal block (25), first sliding plate (23) and first cavity (9) are close to second cavity (27) one end fixed connection have around first spring (24) of slip post (53), first passageway (20) and second passageway (17) are passed in shower nozzle (7), shower nozzle (7) outside is equipped with draw-in groove (21) that can hold calorie post (22).

2. The automatic blockage removing device for the 3D printing nozzle as claimed in claim 1, wherein the device comprises: the spray nozzle is characterized in that a first cylinder (2) is fixedly mounted on the bottom plate (1), and a semicircular bearing (3) which can be attached to the outer side of the spray nozzle (7) is fixedly mounted at the top of the first cylinder (2).

3. The automatic blockage removing device for the 3D printing nozzle as claimed in claim 1, wherein the device comprises: the bottom plate (1) is fixedly provided with a bearing platform (14), a second cylinder (10) is arranged above the bearing platform (14), the outer side of the second cylinder (10) is rotatably connected with a third supporting plate (8) fixedly arranged at the top of the bearing platform (14), a third gear (11) is fixedly arranged at the outer side of the second cylinder (10), a fourth motor (12) which is electrified and self-locked is fixedly arranged at the top of the bearing platform (14), a fourth gear (13) which is meshed with the third gear (11) is fixedly arranged on an output shaft of the fourth motor (12), one end of the second cylinder (10) is provided with a grinding column (44), the top of the grinding column (44) is provided with an accommodating groove (45), inner walls at the left end and the right end of the accommodating groove (45) are fixedly provided with a fixing shaft (46), the outer side of the fixing shaft (46) is rotatably connected with a clamping plate (47) which can rotate out of the accommodating groove (45), the clamping plate (47) is internally provided with a magnet (35), and the grinding column (44) is internally provided with a second electromagnet (37) capable of repelling or adsorbing the magnet (35).

4. The automatic blockage removing device for the 3D printing nozzle as claimed in claim 3, wherein the blockage removing device comprises: grinding post (44) outside fixed mounting has cam (36), cam (36) overhang is the same with holding tank (45) open end orientation, cushion cap (14) top fixed mounting has box body (39), box body (39) inside sliding connection has kicking block (42) that can be pressed by cam (36), box body (39) top inner wall is passed in kicking block (42), kicking block (42) bottom fixed mounting have with box body (39) inner wall bottom fixed connection's second spring (40).

5. The automatic blockage removing device for the 3D printing nozzle as claimed in claim 3, wherein the blockage removing device comprises: and a gyroscope sensor (43) for converting the magnetic pole of the second electromagnet (37) is arranged in the grinding column (44).

6. The automatic blockage removing device for the 3D printing nozzle as claimed in claim 3, wherein the blockage removing device comprises: and the top of the clamping plate (47) is provided with a grinding layer (48) aligned with the outer side of the grinding column (44).

7. The automatic blockage removing device for the 3D printing nozzle as claimed in claim 4, wherein the device comprises: the inner walls of the two ends of the box body (39) are provided with limiting grooves (41), and limiting blocks (38) which are connected with the limiting grooves (41) in a sliding mode are fixedly mounted on the top blocks (42).

8. The use method of the automatic blockage removing device for the 3D printing nozzle as claimed in claim 1 comprises the following steps:

firstly, installation: the spray head (7) extends into the second channel (17), so that the inclined surface of the spray head (7) pushes the clamping column (22) to contract until the clamping column (22) is matched with the clamping groove (21), and the clamping column (22) clamps the spray head (7) through the clamping groove (21);

secondly, angle adjustment: starting a second motor (15) to drive the round box (34) to rotate, and further driving the spray head (7) to rotate, so that the bottom of the spray head (7) is flush with the horizontal line;

thirdly, auxiliary supporting: starting the first cylinder (2), and enabling an output shaft of the first cylinder (2) to ascend to drive the inner wall of the semicircular bearing (3) to be attached to the bottom of the spray head (7);

fourthly, clearing the blockage: the fourth motor (12) is started to drive the third gear (11) to rotate, the third gear (11) rotates to drive the second cylinder (10) to rotate, the second cylinder (10) rotates to drive the grinding column (44) to rotate, the gyroscope sensor (43) senses rotation when the grinding column (44) rotates, the second electromagnet (37) adsorbs the magnet (35), the clamping plate (47) is located in the accommodating groove (45), the second cylinder (10) drives the grinding column (44) to stretch out and penetrate through the spray head (7), the part of the accommodating groove (45) on the grinding column (44) penetrates through the spray head (7) and is located outside the spray head (7), the top of the outer side of the grinding column (44) is tangent to the bottom of the inner wall of the spray head (7), when the grinding column (44) stretches out, the cam (36) supports and presses the jacking block (42), the third motor (28) is started at the moment, the third motor (28) drives the second gear (29) to rotate, the second gear (29) rotates to drive the first gear (32) to rotate, the first gear (32) rotates to drive the circular plate (49) to rotate, the circular plate (49) rotates to drive the clamping column (22) to rotate, the clamping column (22) rotates to drive the spray head (7) to rotate, the spray head (7) rotates to enable the grinding column (44) to cut along the inner wall of the spray head (7), and then printing materials attached to the interior of the spray head (7) are separated from the inner wall of the spray head (7);

fifthly, discharging: after the spray head (7) rotates for a circle, the third motor (28) and the fourth motor (12) are turned off, the fourth motor (12) is turned off to stop the rotation of the grinding column (44), after the rotation of the grinding column (44) is stopped, the gyroscope sensor (43) senses the stop, the magnetic pole of the second electromagnet (37) is switched to repel the magnet (35), the clamping plate (47) extends out of the accommodating groove (45), the fourth motor (12) is in a non-self-locking state when the power is off, at the moment, the top block (42) pushes the cam (36) to rotate under the action of the second spring (40), the cam (36) is always in a state that the protruding end faces upwards, the cam (36) rotates to drive the grinding column (44) to rotate, the grinding column (44) rotates to drive the clamping plate (47) to always face upwards to correspond to the inside of the spray head (7), and at the moment, the fourth motor (12) is electrified to be in a self-locking state, prevent that second cylinder (10) from rotating, second cylinder (10) drive grinding post (44) shrink this moment, and through cardboard (47) hook the inside printing material solidification piece of shower nozzle (7) during grinding post (44) shrink to pull out shower nozzle (7) with it and accomplish the row material.