CN116330655A

CN116330655A - 3D printer nozzle and 3D printer thereof

Info

Publication number: CN116330655A
Application number: CN202310341123.0A
Authority: CN
Inventors: 靳国宝; 王玉晶
Original assignee: Chaohu University
Current assignee: Chaohu University
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-06-27

Abstract

The invention belongs to the technical field of 3D printers, in particular to a 3D printer nozzle and a 3D printer thereof, which comprises a printer body, wherein one side of the printer body is fixedly connected with a linear guide rail, the top end of a sliding block of the linear guide rail is fixedly connected with a cross beam, one end of the cross beam, which is far away from the linear guide rail, is rotatably provided with a rotating unit, the top of the rotating unit is provided with a plurality of replacing arms, one end of each replacing arm, which is far away from the rotating unit, is uniformly and slidably provided with a notch, the inside of the notch is slidably provided with a nozzle, the outer ring at the bottom of the nozzle is fixedly connected with a toothed ring, the middle part of each replacing arm is provided with a straight slot, one side, which is close to the notch, of the straight slot is fixedly connected with a first motor, a rotating shaft of the first motor is fixedly connected with a first gear, and the first gear is meshed with the toothed ring; the replacement work of the nozzles is completed, the difficulty of replacing the nozzles by workers is reduced, the 3D printing efficiency is improved, and the application range of the 3D printer is improved.

Description

3D printer nozzle and 3D printer thereof

Technical Field

The invention belongs to the technical field of 3D printers, and particularly relates to a 3D printer nozzle and a 3D printer thereof.

Background

The 3D printer is a rapid forming process device, uses a cumulative manufacturing technology and digital model files as a basis, uses special wax materials, powdered metals or plastic and other bondable materials, and prints a layer of bonding materials to manufacture a three-dimensional object; the 3D printing directly generates objects with any shape from the computer graphic data without machining or a die, thereby greatly shortening the production period of the product and improving the productivity.

The nozzle is an important part of the 3D printer, the nozzle is usually a cylindrical part, the head end of the nozzle gradually contracts, and a channel through which the spray material passes is formed in the nozzle; when 3D printing is carried out, the material is heated into liquid state and sprayed out from the nozzle, and the temperature is reduced, solidified and formed.

The aperture and the shape of the nozzle of the 3D printer are fixed and cannot be adjusted; nozzles of different apertures and shapes are required according to the material, shape characteristics of the printed product; therefore, when different printing materials are used and different products are manufactured, different nozzles are required to be replaced, different 3D printers are required to be replaced, the working efficiency is affected, and the investment of cost is increased.

To this end, the invention provides a 3D printer nozzle and a 3D printer thereof.

Disclosure of Invention

In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.

The technical scheme adopted for solving the technical problems is as follows: the 3D printer comprises a printer body; a replacement component is arranged on one side of the printer body; the automatic printer comprises a printer body, and is characterized in that the replacement assembly comprises a linear guide rail, one side of the printer body is fixedly connected with the linear guide rail, the top end of a sliding block of the linear guide rail is fixedly connected with a cross beam, one end of the cross beam, which is far away from the linear guide rail, is rotatably provided with a rotary seat, the top of the rotary seat is provided with a rotary unit, a plurality of replacement arms are uniformly and slidably arranged on an outer ring of the rotary seat, a notch is formed in one end, which is far away from the rotary seat, of the replacement arm, a nozzle is slidably arranged in the notch, a toothed ring is fixedly connected on the outer ring at the bottom of the nozzle, a straight groove is formed in the middle of the replacement arm, a first motor is fixedly connected on one side, which is close to the notch, of the straight groove is fixedly connected with a first gear, and the first gear is meshed with the toothed ring; thereby accomplish the change work of nozzle, reduced the difficulty that the staff changed the nozzle, improved 3D printing's efficiency to and improved 3D printer's application scope.

Preferably, the rotating unit comprises a second motor; a second motor is fixedly connected to one end of the cross beam, which is close to the rotary seat, a second gear is fixedly connected to a rotary shaft of the second motor, a face gear is fixedly connected to the outer ring of the top of the rotary seat, the bottom surface of the face gear is in rotary fit with the top surface of the cross beam, and the second gear is meshed with the face gear; the probability that the rotary seat slides downwards on the cross beam is reduced, and the rotation stability and accuracy of the rotary seat are improved.

Preferably, the outer wall of the rotary seat is uniformly provided with a plurality of sliding grooves, the bottom surface of each sliding groove is bolted with a baffle, a replacement arm is slidably arranged in each sliding groove, a spring is fixedly connected between the top surface of each replacement arm and the top end of each sliding groove, a push rod is arranged on one end bottom surface of each replacement arm, which is close to each sliding groove, of each push rod is slidably penetrated through the middle part of each baffle, a first hydraulic cylinder is fixedly connected in each circular groove on the bottom surface of each rotary seat, a fixed block is fixedly connected at the lower end of a piston rod of each first hydraulic cylinder, a rotary sleeve is rotatably arranged on an outer ring of each fixed block, a third motor is fixedly connected in an inner cavity of each fixed block, a rotary shaft of each third motor is fixedly connected with the middle part of each rotary sleeve, and an extension arm is fixedly connected on the outer ring of each rotary sleeve; therefore, the probability of falling during nozzle installation is reduced, and the accuracy of nozzle installation is improved.

Preferably, a convex nail is fixedly connected to the top surface of one end of the extension arm far away from the rotating sleeve, a concave nail is fixedly connected to the lower end of the push rod, the convex nail and the concave nail are both magnetic, and the convex nail and the concave nail are attracted to each other; therefore, the probability of swing displacement of the push rod when the push rod is pushed is reduced, the stability of the nozzle is improved when the nozzle is lifted, and the probability of dislocation when the nozzle is installed is reduced; meanwhile, the protruding nails and the concave nails are magnetic, so that accuracy of the protruding nails and the concave nails in overlapping is improved, and probability of dislocation of the extension arm and the push rod is reduced.

Preferably, the top surface of the inner ring of the notch is provided with a step groove, the bottom surface of one side of the step groove, which is close to the swivel mount, is embedded with an arc-shaped magnet, the outer ring of the middle part of the nozzle is fixedly connected with a ring plate, the outer wall of the ring plate is in sliding fit with the inner wall of the step groove, the bottom surface of the ring plate is embedded with an annular magnet, and the bottom surface of the annular magnet and the top surface of the arc-shaped magnet are attracted mutually; when the nozzle is installed inside the notch on the replacement arm, the annular plate slides along the step groove, the step groove supports the nozzle, meanwhile, the annular magnet is attracted with the arc-shaped magnet, the nozzle is fixed inside the notch, and meanwhile, the rotation of the nozzle is not affected.

Preferably, through grooves are formed in two sides of the middle of the straight groove, clamping arms are rotatably mounted in the middle of the through grooves in two sides of the straight groove, the clamping arms are in sliding fit with the through grooves, a second hydraulic cylinder is fixedly connected to one side, close to a swivel seat, of the straight groove, the end of a piston rod of the second hydraulic cylinder is hinged to the end of the clamping arm, a connecting shaft is rotatably mounted at one end, close to a notch, of the clamping arm, a roller is rotatably mounted on the outer ring of the bottom of the connecting shaft, and the outer wall of the roller is in sliding fit with the outer ring of the toothed ring; the probability of the first gear and the toothed ring being separated is reduced, and meanwhile, the probability of the nozzle falling is reduced.

Preferably, a supporting beam plate is fixedly connected to one side of the printer body, a reinforcing plate is fixedly connected to the bottom surface of the middle of the supporting beam plate, the reinforcing plate is fixedly connected with a linear guide rail, a cleaning spray head is fixedly connected to the bottom surface of one end of the supporting beam plate, which is far away from the printer body, the top of the cleaning spray head is connected with a pair of connecting ports, the connecting ports penetrate through the supporting beam plate, a one-way valve is arranged at the top of each connecting port, one side of each connecting port is communicated with a high-pressure water pump through a pipeline, the other side of each connecting port is communicated with a high-pressure air pump through a pipeline, and the outer ring at the bottom end of the cleaning spray head is in sliding fit with the inner ring at the top end of each nozzle; therefore, the cleaning work of the nozzles is completed, and the probability of blocking the nozzles by the printed residual materials is reduced.

Preferably, the bottom of the cleaning spray head is fixedly connected with an annular rubber pad, the bottom surface of the annular rubber pad is provided with a plurality of annular skirts, and the inside of the annular rubber pad is provided with a cavity; the impact between the cleaning spray head and the nozzle is reduced through the annular rubber pad, the damage of the nozzle is reduced, the annular rubber pad is used for cleaning the connection gap between the spray head and the nozzle, the leakage probability of high-pressure water flow and high-pressure air flow is reduced, and the cleaning effect is improved.

Preferably, a mounting plate is fixedly connected to the bottom surface of one end of the support beam plate, which is close to the cleaning spray head, a collecting barrel is slidably mounted on one side of the mounting plate, which is close to the cleaning spray head, the diameter of the bottle mouth of the collecting barrel is smaller than that of the bottle body of the collecting barrel, and the nozzle of the cleaning spray head is aligned with the inner ring of the bottle mouth of the collecting barrel; the inside of collecting vessel is collected to clearance shower nozzle spun high-pressure rivers and high-pressure air flow in proper order, simultaneously, and the bottleneck of collecting vessel is less for get into the inside high-pressure rivers of collecting vessel and be blocked by the bottleneck of collecting vessel, reduced the probability that high-pressure rivers take place to splash, reduced the pollution to the printer body.

The 3D printer nozzle is suitable for the 3D printer, and comprises a nozzle, wherein the nozzle is cylindrical, the bottom of the nozzle is conical, a conical through hole is formed in the inner ring of the nozzle, threads are formed in the outer ring of the top of the nozzle, the outer ring of the bottom of the nozzle is fixedly connected with a toothed ring, a ring plate is fixedly connected with the outer ring of the middle of the nozzle, and a ring magnet is inlaid on the bottom surface of the ring plate; the nozzle is convenient to install in the printer body through the opened screw thread; through the ring gear that sets up, not only can cooperate the change subassembly to carry out automatic change nozzle, the manual nozzle of dismantling of staff of being convenient for moreover.

The beneficial effects of the invention are as follows:

1. according to the 3D printer nozzle and the 3D printer thereof, the printer body, the linear guide rail, the cross beam, the swivel mount, the replacement arm, the nozzle, the toothed ring, the first motor and the first gear are arranged; when the nozzle on the printer body needs to be replaced, the linear guide rail pushes the replacement arm without the nozzle to move into the printer body, the nozzle on the printer body moves into the notch of the replacement arm, a first motor on the replacement arm drives a first gear to rotate, a toothed ring meshed with the first gear to rotate, the nozzle is driven to rotate, the nozzle on the printer body is rotationally dismounted, the nozzle is taken out, and replacement and installation are performed; thereby accomplish the change work of nozzle, reduced the difficulty that the staff changed the nozzle, improved 3D printing's efficiency to and improved 3D printer's application scope.

2. According to the 3D printer nozzle and the 3D printer thereof, the baffle, the push rod, the first hydraulic cylinder, the fixed block, the rotating sleeve, the third motor and the extension arm are arranged; after the nozzle to be replaced is aligned with the nozzle interface of the printer body, at the moment, the nozzle to be replaced is located under the nozzle interface of the printer body, the third motor drives the extension arm to rotate, the first hydraulic cylinder contracts, the push rod is pushed to move upwards, the replacement arm is pushed to slide upwards along the sliding groove, the nozzle to be replaced is driven to approach the nozzle interface of the printer body upwards, accordingly, the falling probability during nozzle installation is reduced, and the accuracy of nozzle installation is improved.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a first perspective view of a first embodiment of the present invention;

FIG. 2 is a second perspective view of a first embodiment of the invention;

FIG. 3 is a perspective view of a replacement assembly according to a first embodiment of the present invention;

FIG. 4 is a cross-sectional view of a replacement assembly in accordance with a first embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is an exploded view of a replacement assembly in accordance with a first embodiment of the present invention;

FIG. 7 is a perspective view of a replacement arm and a clamp arm in accordance with a first embodiment of the present invention;

FIG. 8 is a perspective view of a nozzle in accordance with a first embodiment of the present invention;

FIG. 9 is a cross-sectional view of a nozzle in accordance with a first embodiment of the invention;

FIG. 10 is an exploded view of a cleaning head according to a first embodiment of the present invention;

FIG. 11 is a cross-sectional view of a cleaning head in accordance with a first embodiment of the present invention;

FIG. 12 is a perspective view of a cleaning head in accordance with a second embodiment of the present invention;

in the figure: 1. a printer body; 2. a linear guide rail; 3. a cross beam; 4. rotating base; 5. changing the arm; 6. a notch; 7. a nozzle; 8. a toothed ring; 9. a straight groove; 10. a motor I; 11. a first gear; 12. a motor II; 13. a second gear; 14. face gears; 15. a chute; 16. a baffle; 17. a spring; 18. a push rod; 19. a first hydraulic cylinder; 20. a fixed block; 21. a rotating sleeve; 22. a third motor; 23. an extension arm; 24. convex nails; 25. concave nails; 26. a step groove; 27. an arc-shaped magnet; 28. a ring plate; 29. a ring magnet; 30. a through groove; 31. a clamping arm; 32. a second hydraulic cylinder; 33. a connecting shaft; 34. a roller; 35. supporting the beam plate; 36. a reinforcing plate; 37. cleaning a spray head; 38. a connection port; 39. an annular rubber pad; 40. a mounting plate; 41. and a collecting barrel.

Detailed Description

The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.

Example 1

As shown in fig. 1 to 6, a 3D printer according to an embodiment of the present invention includes a printer body 1; a replacement component is arranged on one side of the printer body 1; the replacement assembly comprises a linear guide rail 2, one side of a printer body 1 is fixedly connected with the linear guide rail 2, the top end of a sliding block of the linear guide rail 2 is fixedly connected with a cross beam 3, one end of the cross beam 3 far away from the linear guide rail 2 is rotatably provided with a rotary seat 4, the top of the rotary seat 4 is provided with a rotary unit, the outer ring of the rotary seat 4 is uniformly and slidably provided with a plurality of replacement arms 5, one end of the replacement arms 5 far away from the rotary seat 4 is provided with a notch 6, the inside of the notch 6 is slidably provided with a nozzle 7, the outer ring at the bottom of the nozzle 7 is fixedly connected with a toothed ring 8, the middle part of the replacement arms 5 is provided with a straight slot 9, one side, close to the notch 6, of the straight slot 9 is fixedly connected with a first motor 10, a rotary shaft of the first motor 10 is fixedly connected with a first gear 11, and the first gear 11 is meshed with the toothed ring 8; the printer body 1 in the embodiment is an existing 3D printer, and the main system is an electromechanical integrated system integrated by mechanical, control, computer technology and the like; the main components are as follows: the system comprises an X-Y-Z motion system, a spray head structure, a numerical control module, a molding environment module and the like; during operation, according to the requirements of processing and production, nozzles 7 with different specifications are selected, and the nozzles 7 are installed in the notch 6 of the replacement arm 5, so that the toothed ring 8 of the outer ring of the nozzles 7 is meshed with the first gear 11; when the nozzle 7 on the printer body 1 needs to be replaced, the rotating unit drives the rotating seat 4 to rotate, so that the replacement arm 5 with one side not provided with the nozzle 7 rotates to one side of the printer body 1, the linear guide rail 2 drives the cross beam 3 to move towards the printer body 1, the replacement arm 5 without the nozzle 7 is pushed to move into the printer body 1, the moving system of the printer body 1 drives the nozzle 7 of the printer body 1 to move into the notch 6 of the replacement arm 5, the first motor 10 on the replacement arm 5 drives the first gear 11 to rotate, the toothed ring 8 meshed with the first gear 11 is driven to rotate, the nozzle 7 is driven to rotate, and the nozzle 7 on the printer body 1 is rotationally dismounted; afterwards, the linear guide rail 2 drives the cross beam 3 to be far away from the printer body 1, so that the replaced nozzle 7 moves out of the printer body 1, at the moment, the rotating unit drives the rotary seat 4 to rotate, so that the replacement arm 5 of the nozzle 7 to be replaced rotates to one side of the printer body 1, the linear guide rail 2 drives the cross beam 3 to move towards the printer body 1, the nozzle 7 to be replaced is sent into the printer body 1, the nozzle 7 to be replaced is aligned with a nozzle interface of the printer body 1, the first motor 10 drives the first gear 11 to rotate, the toothed ring 8 meshed with the first gear is driven to rotate, the nozzle 7 to be replaced is installed in the printer body 1, and finally, the linear guide rail 2 drives the replacement assembly to move out of the printer body 1; thereby accomplish the change work of nozzle 7, reduced the difficulty that the staff changed nozzle 7, improved 3D printing's efficiency to and improved 3D printer's application scope.

As shown in fig. 1 to 6, the rotation unit includes a motor No. 12; a motor No. two 12 is fixedly connected to one end of the cross beam 3, which is close to the rotary seat 4, a gear No. two 13 is fixedly connected to a rotating shaft of the motor No. two 12, a face gear 14 is fixedly connected to the outer ring of the top of the rotary seat 4, the bottom surface of the face gear 14 is in running fit with the top surface of the cross beam 3, and the gear No. two 13 is meshed with the face gear 14; when the spray nozzle replacement device works, the second motor 12 drives the second gear 13 to rotate, drives the face gear 14 meshed with the second gear to rotate, drives the rotary seat 4 to rotate and is used for controlling and adjusting the position of the replacement arm 5, so that different spray nozzles 7 are selected for replacement, and the operation convenience of staff is improved; meanwhile, the face gear 14 is in running fit with the top of the cross beam 3, supports and blocks the rotary seat 4, reduces the probability that the rotary seat 4 slides downwards on the cross beam 3, and improves the rotation stability and accuracy of the rotary seat 4.

As shown in fig. 2 to 6, the outer wall of the rotary seat 4 is uniformly provided with a plurality of sliding grooves 15, the bottom surface of each sliding groove 15 is bolted with a baffle 16, a replacement arm 5 is slidably installed in each sliding groove 15, a spring 17 is fixedly connected between the top surface of each replacement arm 5 and the top end of each sliding groove 15, a push rod 18 is threadedly installed at one end of each replacement arm 5 close to each sliding groove 15, the push rod 18 slidably penetrates through the middle part of each baffle 16, a first hydraulic cylinder 19 is fixedly connected in a circular groove in the bottom surface of each rotary seat 4, the lower end of a piston rod of each first hydraulic cylinder 19 is fixedly connected with a fixed block 20, a rotary sleeve 21 is rotatably installed on the outer ring of each fixed block 20, a third motor 22 is fixedly connected in an inner cavity of each fixed block 20, a rotating shaft of each third motor 22 is fixedly connected with the middle part of each rotary sleeve 21, and an extension arm 23 is fixedly connected with the outer ring of each rotary sleeve 21; during operation, after the nozzle 7 to be replaced aligns with the nozzle interface of the printer body 1, at this moment, the nozzle 7 to be replaced is located under the nozzle interface of the printer body 1, the hydraulic cylinder 19 is in an extending state, the motor 22 is used for driving the rotating sleeve 21 to rotate and driving the extension arm 23 to rotate, the extension arm 23 is enabled to rotate to the bottom of the push rod 18, the hydraulic cylinder 19 is contracted and is used for driving the extension arm 23 to move upwards, the push rod 18 is pushed to move upwards, the replacement arm 5 is pushed to slide upwards along the sliding groove 15, the nozzle 7 to be replaced is driven to approach the nozzle interface of the printer body 1 upwards, therefore, the probability of falling during installation of the nozzle 7 is reduced, and the accuracy of installation of the nozzle 7 is improved.

As shown in fig. 3 to 6, a protruding nail 24 is fixedly connected to the top surface of one end of the extension arm 23 far away from the rotating sleeve 21, a concave nail 25 is fixedly connected to the lower end of the push rod 18, the protruding nail 24 and the concave nail 25 are both magnetic, and the protruding nail 24 and the concave nail 25 are attracted to each other; when the extension arm 23 moves upwards to be close to the bottom of the push rod 18, the top tip of the convex nail 24 is pushed to be inserted into the concave hole at the bottom of the concave nail 25, so that the probability of swing displacement of the push rod 18 when the push rod 18 is pushed is reduced, the stability of the nozzle 7 is improved, and the probability of dislocation when the nozzle 7 is installed is reduced; meanwhile, the protruding nails 24 and the concave nails 25 are magnetic, so that accuracy in the process of overlapping the protruding nails 24 and the concave nails 25 is improved, and the probability of dislocation of the extension arm 23 and the push rod 18 is reduced.

As shown in fig. 3 to 9, the top surface of the inner ring of the notch 6 is provided with a step groove 26, the bottom surface of one side of the step groove 26, which is close to the rotary seat 4, is embedded with an arc-shaped magnet 27, the outer ring of the middle part of the nozzle 7 is fixedly connected with a ring plate 28, the outer wall of the ring plate 28 is in sliding fit with the inner wall of the step groove 26, the bottom surface of the ring plate 28 is embedded with an annular magnet 29, and the bottom surface of the annular magnet 29 and the top surface of the arc-shaped magnet 27 are attracted mutually; when the nozzle 7 is installed in the notch 6 on the replacement arm 5 in operation, the annular plate 28 slides along the step groove 26, the step groove 26 supports the nozzle 7, and meanwhile, the annular magnet 29 is attracted with the arc-shaped magnet 27 to fix the nozzle 7 in the notch 6, and meanwhile, the rotation of the nozzle 7 is not affected.

As shown in fig. 3 to 7, through grooves 30 are formed on two sides of the middle of the straight groove 9, clamping arms 31 are rotatably mounted in the middle of the through grooves 30 on two sides, the clamping arms 31 are in sliding fit with the through grooves 30, a second hydraulic cylinder 32 is fixedly connected to one side, close to the swivel seat 4, of the straight groove 9, the end of a piston rod of the second hydraulic cylinder 32 is hinged to the end of the clamping arm 31, a connecting shaft 33 is rotatably mounted at one end, close to the notch 6, of the clamping arm 31, a roller 34 is rotatably mounted on the outer ring at the bottom of the connecting shaft 33, and the outer wall of the roller 34 is in sliding fit with the outer ring of the toothed ring 8; during operation, after the nozzle 7 is mounted in the notch 6 on the replacement arm 5, the second hydraulic cylinder 32 contracts to drive the clamping arms 31 on two sides to rotate, and the rollers 34 on two sides are pushed to approach each other, so that the rollers 34 contact the outer ring of the toothed ring 8 of the outer ring of the nozzle 7, the nozzle 7 is clamped and fixed by being matched with the first gear 11, the probability of separation of the first gear 11 and the toothed ring 8 is reduced, and meanwhile, the probability of falling of the nozzle 7 is reduced.

As shown in fig. 1, fig. 2, fig. 10 and fig. 11, a supporting beam plate 35 is fixedly connected to one side of the printer body 1, a reinforcing plate 36 is fixedly connected to the bottom surface of the middle part of the supporting beam plate 35, the reinforcing plate 36 is fixedly connected with the linear guide rail 2, a cleaning nozzle 37 is fixedly connected to the bottom surface of one end of the supporting beam plate 35 far away from the printer body 1, a pair of connecting ports 38 are connected to the top of the cleaning nozzle 37, the connecting ports 38 penetrate through the supporting beam plate 35, a one-way valve is arranged at the top of the connecting ports 38, one side of the connecting ports 38 is communicated with a high-pressure water pump through a pipeline, the other side of the connecting ports 38 is communicated with a high-pressure air pump through a pipeline, and the bottom outer ring of the cleaning nozzle 37 is in sliding fit with the top inner ring of the nozzle 7; when the printer is in operation, after the replaced nozzle 7 moves out of the printer body 1, the rotating unit drives the rotary seat 4 to rotate, the replacing arm 5 of the replaced nozzle 7 rotates to one side of the cleaning nozzle 37, the linear guide rail 2 drives the cross beam 3 to move towards the cleaning nozzle 37, the replaced nozzle 7 is sent to the lower part of the cleaning nozzle 37, the third motor 22 drives the rotary sleeve 21 to rotate, the extension arm 23 is driven to rotate to the bottom of the push rod 18, the first hydraulic cylinder 19 contracts, the extension arm 23 is driven to move upwards, the push rod 18 is driven to move upwards, the replacing arm 5 is driven to slide upwards along the chute 15, the replaced nozzle 7 is driven to be connected with the cleaning nozzle 37, the high-pressure water pump sprays clear water into the cleaning nozzle 37, the inside of the nozzle 7 is flushed, then the high-pressure air pump blows high-pressure air into the inside the nozzle 7 through the cleaning nozzle 37, the water stain inside the nozzle 7 is blown off, and therefore the cleaning work of the nozzle 7 is completed, and the probability of blocking the nozzle 7 by the printed residual material is reduced.

As shown in fig. 10 to 11, an annular rubber pad 39 is fixedly connected to the bottom of the cleaning nozzle 37, a plurality of annular skirts are formed on the bottom surface of the annular rubber pad 39, and a cavity is formed inside the annular rubber pad 39; the impact between the cleaning spray nozzle 37 and the nozzle 7 is reduced through the annular rubber pad 39, the damage to the nozzle 7 is reduced, the annular rubber pad 39 is used for cleaning the connecting gap between the spray nozzle 37 and the nozzle 7, the leakage probability of high-pressure water flow and high-pressure air flow is reduced, and the cleaning effect is improved.

As shown in fig. 8 to 9, a 3D printer nozzle is suitable for the 3D printer, and the 3D printer nozzle includes a nozzle 7, the nozzle 7 is cylindrical, the bottom is tapered, a conical through hole is provided in the inner ring of the nozzle 7, a thread is provided in the outer ring of the top of the nozzle 7, the toothed ring 8 is fixedly connected to the outer ring of the bottom of the nozzle 7, a ring plate 28 is fixedly connected to the outer ring of the middle of the nozzle 7, and a ring magnet 29 is embedded in the bottom surface of the ring plate 28; the nozzle 7 is convenient to be installed in the printer body 1 through the opened screw thread; through the ring gear 8 that sets up, not only can cooperate the change subassembly to carry out automatic change nozzle 7, the manual nozzle 7 of dismantling of staff of being convenient for moreover.

Example two

As shown in fig. 12, a comparative example one, in which another embodiment of the present invention is: the bottom surface of one end of the supporting beam plate 35, which is close to the cleaning spray head 37, is fixedly connected with a mounting plate 40, a collecting barrel 41 is slidably arranged on one side of the mounting plate 40, which is close to the cleaning spray head 37, the diameter of a bottle mouth of the collecting barrel 41 is smaller than the diameter of a bottle body of the collecting barrel 41, and a nozzle of the cleaning spray head 37 is aligned with the inner ring of the bottle mouth of the collecting barrel 41; during operation, the cleaning nozzle 37 sequentially sprays high-pressure water flow and high-pressure air flow to collect the inside of the collecting barrel 41, and meanwhile, the bottle mouth of the collecting barrel 41 is smaller, so that the high-pressure water flow entering the inside of the collecting barrel 41 is blocked by the bottle mouth of the collecting barrel 41, the probability of splashing of the high-pressure water flow is reduced, and the pollution to the printer body 1 is reduced.

Working principle: according to the requirements of processing production, selecting nozzles 7 with different specifications, mounting the nozzles 7 into the notch 6 of the replacement arm 5, enabling the ring plate 28 to slide along the step groove 26, supporting the nozzles 7 by the step groove 26, and simultaneously, sucking the annular magnet 29 with the arc-shaped magnet 27 to fix the nozzles 7 in the notch 6; the second hydraulic cylinder 32 contracts to drive the clamping arms 31 at the two sides to rotate and push the rollers 34 at the two sides to approach each other, so that the rollers 34 contact the outer ring of the toothed ring 8 of the outer ring of the nozzle 7, and the nozzle 7 is clamped and fixed by matching with the first gear 11;

when the nozzle 7 on the printer body 1 needs to be replaced, the motor 12 drives the gear 13 to rotate, the face gear 14 meshed with the motor 12 is driven to rotate, the rotary seat 4 is driven to rotate, the replacement arm 5 with one side not provided with the nozzle 7 rotates to one side of the printer body 1, the linear guide rail 2 drives the cross beam 3 to move towards the printer body 1, the replacement arm 5 without the nozzle 7 is pushed to move into the printer body 1, the movement system of the printer body 1 drives the nozzle 7 of the printer body 1 to move into the notch 6 of the replacement arm 5, the motor 10 on the replacement arm 5 drives the gear 11 to rotate, the toothed ring 8 meshed with the motor is driven to rotate, the nozzle 7 is driven to rotate, and the nozzle 7 on the printer body 1 is removed;

afterwards, the linear guide rail 2 drives the cross beam 3 to be far away from the printer body 1, so that the replaced nozzle 7 moves out of the printer body 1, and the rotating unit drives the rotating seat 4 to rotate, so that the replacement arm 5 of the nozzle 7 to be replaced rotates to one side of the printer body 1; after the replaced nozzle 7 moves out of the printer body 1, the rotating unit drives the swivel mount 4 to rotate, so that the replacing arm 5 of the replaced nozzle 7 rotates to one side of the cleaning nozzle 37, the linear guide rail 2 drives the cross beam 3 to move towards the cleaning nozzle 37, the replaced nozzle 7 is sent to the lower part of the cleaning nozzle 37, the third motor 22 drives the swivel sleeve 21 to rotate, the extension arm 23 is driven to rotate to the bottom of the push rod 18, the first hydraulic cylinder 19 is contracted, the extension arm 23 is driven to move upwards, the push rod 18 is driven to move upwards, the replacing arm 5 is driven to slide upwards along the chute 15, the replaced nozzle 7 is driven to be connected with the cleaning nozzle 37, the high-pressure water pump ejects clear water through the cleaning nozzle 37, the inside of the nozzle 7 is flushed out, then the high-pressure air pump pumps high-pressure air into the inside the nozzle 7 through the cleaning nozzle 37, water stains inside the nozzle 7 are blown out, the cleaning work of the nozzle 7 is completed, and the probability of blocking the nozzle 7 by the printed residues is reduced;

then, the linear guide rail 2 drives the cross beam 3 to move towards the printer body 1, the nozzle 7 to be replaced is sent into the printer body 1, the nozzle 7 to be replaced is aligned with a nozzle interface of the printer body 1, the first hydraulic cylinder 19 is in an extending state, the third motor 22 drives the rotating sleeve 21 to rotate, the extension arm 23 is driven to rotate to the bottom of the push rod 18, the first hydraulic cylinder 19 is contracted, the extension arm 23 is driven to move upwards, the push rod 18 is driven to move upwards, the replacement arm 5 is driven to slide upwards along the sliding groove 15, the nozzle 7 to be replaced is driven to approach the nozzle interface of the printer body 1 upwards, the first motor 10 drives the first gear 11 to rotate, the toothed ring 8 meshed with the first gear is driven to rotate, the nozzle 7 to be replaced is installed into the printer body 1, and finally, the linear guide rail 2 drives the replacement assembly to move out of the printer body 1; thereby accomplish the change work of nozzle 7, reduced the difficulty that the staff changed nozzle 7, improved 3D printing's efficiency to and improved 3D printer's application scope.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A 3D printer, characterized in that: comprises a printer body (1); a replacement component is arranged on one side of the printer body (1); the utility model provides a printer, including the subassembly that changes, change subassembly includes linear guide (2), one side rigid coupling of printer body (1) has linear guide (2), the slider top rigid coupling of linear guide (2) has crossbeam (3), one end that linear guide (2) was kept away from to crossbeam (3) rotates and installs swivel mount (4), the top of swivel mount (4) is provided with the rotation unit, the even slidable mounting in outer lane of swivel mount (4) has a plurality of change arm (5), change arm (5) and keep away from one end of swivel mount (4) and seted up notch (6), the inside slidable mounting of notch (6) has nozzle (7), the bottom outer lane rigid coupling of nozzle (7) has toothed ring (8), straight flute (9) have been seted up at the middle part of change arm (5), one side rigid coupling that straight flute (9) are close to notch (6) has motor (10), the pivot rigid coupling of motor (10) has gear (11), gear (11) and toothed ring (8) meshing.

2. A 3D printer according to claim 1, wherein: the rotating unit comprises a second motor (12); the novel rotary table is characterized in that a motor II (12) is fixedly connected to one end of the cross beam (3) close to the rotary table (4), a gear II (13) is fixedly connected to a rotating shaft of the motor II (12), a face gear (14) is fixedly connected to the outer ring of the top of the rotary table (4), the bottom surface of the face gear (14) is in rotary fit with the top surface of the cross beam (3), and the gear II (13) is meshed with the face gear (14).

3. A 3D printer according to claim 1, wherein: the outer wall of swivel mount (4) has evenly offered a plurality of spouts (15), the bottom surface bolt of spout (15) has baffle (16), the inside slidable mounting of spout (15) changes arm (5), the rigid coupling has spring (17) between the top surface of changing arm (5) and the top of spout (15), the one end bottom surface screw thread that changes arm (5) and be close to spout (15) installs push rod (18), the middle part of baffle (16) is run through in push rod (18) slip, the circular slot inside rigid coupling of the bottom surface of swivel mount (4) has pneumatic cylinder (19) No. one, the piston rod lower extreme of pneumatic cylinder (19) is fixed with fixed block (20), the outer lane of fixed block (20) is rotated and is installed change cover (21), the inner chamber rigid coupling of fixed block (20) has No. three motor (22), the pivot of No. motor (22) and the middle part rigid coupling of changeing cover (21), the outer lane rigid coupling of changeing cover (21) has extension arm (23).

4. A 3D printer according to claim 3, wherein: the extension arm (23) is kept away from the one end top surface rigid coupling of changeing cover (21) and is had protruding nail (24), the low end rigid coupling concave nail (25) of push rod (18), protruding nail (24) and concave nail (25) all have magnetism, and protruding nail (24) and concave nail (25) inter attraction.

5. A 3D printer according to claim 1, wherein: the inner ring top surface of notch (6) has seted up step groove (26), one side bottom surface that step groove (26) is close to swivel mount (4) has inlayed arc magnet (27), the middle part outer lane rigid coupling of nozzle (7) has annular plate (28), the outer wall of annular plate (28) and the inner wall sliding fit of step groove (26), annular magnet (29) have been inlayed to the bottom surface of annular plate (28), the bottom surface of annular magnet (29) and the top surface of arc magnet (27) attract each other.

6. A 3D printer according to claim 1, wherein: the utility model discloses a straight flute (9) with the fixed ring, including straight flute (9) and connecting axle (33) are installed in the middle part both sides all having seted up logical groove (30), both sides the centre part of leading to groove (30) is all rotated and is installed centre gripping arm (31), and sliding fit between centre gripping arm (31) and the leading to groove (30), one side rigid coupling that straight flute (9) is close to swivel mount (4) has No. two pneumatic cylinders (32), the piston rod tip of No. two pneumatic cylinders (32) is articulated with the tip of centre gripping arm (31), the one end that centre gripping arm (31) is close to notch (6) is rotated and is installed connecting axle (33), gyro wheel (34) are installed in the bottom outer lane rotation of connecting axle (33), the outer wall and the outer lane sliding fit of ring (8) of gyro wheel (34).

7. A 3D printer according to claim 1, wherein: one side rigid coupling of printer body (1) has support beam slab (35), the middle part bottom surface rigid coupling of support beam slab (35) has reinforcing plate (36), reinforcing plate (36) and linear guide (2) rigid coupling, the one end bottom surface rigid coupling that support beam slab (35) kept away from printer body (1) has clearance shower nozzle (37), the top of clearance shower nozzle (37) is connected with a pair of connector (38), connector (38) run through support beam slab (35), the top of connector (38) is provided with the check valve, one side connector (38) are through pipeline intercommunication high-pressure water pump, the opposite side connector (38) are through pipeline intercommunication high-pressure air pump, the bottom outer lane of clearance shower nozzle (37) and the top inner circle sliding fit of nozzle (7).

8. A 3D printer according to claim 7, wherein: the bottom of clearance shower nozzle (37) rigid coupling has annular rubber pad (39), a plurality of annular skirts have been seted up to the bottom surface of annular rubber pad (39), and the cavity has been seted up to the inside of annular rubber pad (39).

9. A 3D printer according to claim 7, wherein: one end bottom surface rigid coupling that support beam slab (35) is close to clearance shower nozzle (37) has mounting panel (40), one side slidable mounting that mounting panel (40) are close to clearance shower nozzle (37) has collecting vessel (41), the bottleneck diameter of collecting vessel (41) is less than the body diameter of collecting vessel (41), the bottleneck inner circle of collecting vessel (41) is aligned to the spout of clearance shower nozzle (37).

10. A 3D printer nozzle, characterized by: this 3D printer nozzle is applicable to one kind of 3D printer in any one of claims 1-9, and 3D printer nozzle includes nozzle (7), nozzle (7) are cylindric, and the bottom is the toper, conical through-hole has been seted up to the inner circle of nozzle (7), the screw thread has been seted up to the top outer lane of nozzle (7), bottom outer lane rigid coupling ring gear (8) of nozzle (7), the middle part outer lane rigid coupling of nozzle (7) has annular plate (28), annular magnet (29) have been inlayed to the bottom surface of annular plate (28).