CN113172885A - Self-adjusting powder conveying device applicable to 3D printer - Google Patents
Self-adjusting powder conveying device applicable to 3D printer Download PDFInfo
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- CN113172885A CN113172885A CN202110493624.1A CN202110493624A CN113172885A CN 113172885 A CN113172885 A CN 113172885A CN 202110493624 A CN202110493624 A CN 202110493624A CN 113172885 A CN113172885 A CN 113172885A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention discloses a self-adjusting powder conveying device for a 3D printer, and belongs to the technical field of 3D printers. The device comprises a powder particle box, a conical charging barrel, an L bracket B, L, a bracket A; the powder particle box is also provided with two particle vibration modules which have the same structure and are used for vibrating the powder particles; the feed opening has been seted up at the lower bottom surface center of powder granule case, and the last port and the feed opening of flexible reducing conveyer pipe link to each other, and its lower port stretches into weight response bucket, and the lower extreme of weight response bucket is equipped with the through-hole that links to each other with shower nozzle tubule upper end mouth, and the lower extreme of shower nozzle tubule is installed the printing shower nozzle sliding connection on the nozzle holder with fixing. The self-adjusting powder conveying device is simple and reasonable in structure, has the functions of dynamically conveying powder particles in a vibrating mode and reversely adjusting the conveying speed through the reverse flow, and can be used for a 3D printer.
Description
Technical Field
The invention mainly relates to the technical field of 3D printers, in particular to a self-adjusting powder conveying device for a 3D printer.
Background
The 3D printing rapid prototyping technology is based on the digital model file, and can realize rapid printing of parts. The quality of the printed parts is related to the speed and efficiency of the printed material and the powder material. The 3D printer powder conveying structure in the prior art is complex, the conveying speed cannot be well controlled, self-adaptive adjustment cannot be achieved, and the phenomenon that the conveying speed is too fast or too slow to cause the printing quality and the printing effect to be poor easily occurs. Therefore, it is of great importance to design a conveying device that self-regulates the powder delivery.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the technical problems in the prior art, the self-adjusting powder conveying device is simple and reasonable in structure, has the functions of dynamically conveying powder particles in a vibrating mode and reversely adjusting the conveying speed in a reverse flow mode, and can be used for a 3D printer.
In order to solve the problems, the solution proposed by the invention is as follows: the utility model provides a self-interacting powder conveyor that can be used to D printer, is including the powder granule case that is used for holding the powder granule, fixed install in toper charging bucket on the powder granule case, the symmetry install in L support B and L support A of powder granule case left and right sides below.
The powder particle box is characterized in that the left side and the right side of the lower portion of the powder particle box are respectively provided with an air jet, the central portion of the lower bottom surface of the powder particle box is provided with a feed opening, and two particle vibration modules which have the same structure and are used for enabling the powder particles to vibrate and move towards the feed opening are arranged in the air jet (101).
A flexible reducing conveying pipe, a weight induction barrel, a nozzle thin pipe, a printing nozzle and a nozzle frame are arranged below the powder particle box; the upper opening of the flexible reducing conveying pipe is connected with the feed opening, the lower end of the flexible reducing conveying pipe extends into the weight sensing barrel, the feed opening at the bottom of the weight sensing barrel is connected with the upper opening of the nozzle thin pipe, and the lower end of the nozzle thin pipe is in sliding connection with a printing nozzle fixedly arranged on the nozzle frame; the left side and the right side of the weight induction barrel are provided with induction barrel supporting plates for supporting the total weight of the weight induction barrel.
The L support A and the L support B are respectively provided with an automatic adjusting module which can change the minimum inner diameter of the flexible reducing conveying pipe; the automatic adjusting module is connected with the induction barrel supporting plate; when the powder particles in the weight induction barrel are increased, the automatic adjusting module enables the minimum inner diameter of the flexible reducing conveying pipe to be reduced, and conveying of the powder particles is reduced; when the powder particles in the weight induction barrel are reduced, the automatic adjusting module enables the minimum inner diameter of the flexible reducing conveying pipe to be increased, and the conveying of the powder particles is accelerated.
Furthermore, the particle vibration module comprises a fixed hollow tube which penetrates through the air jet port and is fixedly arranged in the powder particle box along the horizontal direction, a sliding hollow tube which is arranged at one end of the fixed hollow tube extending into the powder particle box in a sliding manner, and a tension and compression spring which is arranged in the fixed hollow tube; the other end of the sliding hollow pipe is provided with a port baffle; and two ends of the tension and compression spring are respectively connected with the opening end of the fixed hollow pipe and the port baffle of the sliding hollow pipe.
Further, the central lines of the air nozzles on the left side and the right side are collinear.
Furthermore, the automatic adjusting module comprises an L-shaped lifting rod which is slidably arranged on the L-shaped support B and the L-shaped support A and can lift along the vertical direction, a lifting block which is fixedly arranged at the upper end of the L-shaped lifting rod, a slider lifting rod which is fixedly arranged at the bottom of the powder particle box, a fixed slider which is fixedly arranged at the lower end of the slider lifting rod, a horizontal moving rod which is slidably arranged in the fixed slider and can move along the horizontal direction of the fixed slider, an induction spring which is connected with the horizontal rod in the induction barrel support plate and the L-shaped lifting rod at the upper end and the lower end, a weight balance spring which is connected with the L-shaped lifting rod at the lower end and the L-shaped support B and the L-shaped support A respectively.
Furthermore, an arc-shaped track is arranged on one side, close to the flexible reducing conveying pipe, of the lifting block, one end of the horizontal moving rod is provided with a roller capable of freely rolling in the arc-shaped track, the other end of the horizontal moving rod is connected with the outer wall of the middle part of the flexible reducing conveying pipe, when the powder particles in the weight sensing barrel are reduced, the L-shaped lifting rod moves upwards, and the horizontal moving rod loosens the flexible reducing conveying pipe, so that the minimum inner diameter of the flexible reducing conveying pipe is increased; when the powder particles in the weight induction barrel increase, the L-shaped lifting rod moves downwards, and the horizontal moving rod compresses the flexible reducing conveying pipe to reduce the minimum inner diameter of the flexible reducing conveying pipe.
Furthermore, the horizontal distance between the middle part of the arc-shaped track and the axis of the flexible reducing conveying pipe is the smallest, the horizontal distance between the upper part of the arc-shaped track and the axis of the flexible reducing conveying pipe is gradually increased, and the horizontal distance between the lower part of the arc-shaped track and the axis of the flexible reducing conveying pipe is gradually increased.
Furthermore, the middle of the inner diameter of the flexible reducing conveying pipe is small, and the two ends of the inner diameter of the flexible reducing conveying pipe are large.
Compared with the prior art, the invention has the following advantages and beneficial effects: the self-adjusting powder conveying device for the 3D printer is provided with the particle vibration module, so that powder particles in the powder particle box are always in a motion state, and the phenomenon that the conveying speed is reduced and even the conveying is stopped for a short time due to the fact that the powder particles in the powder particle box bear excessive internal pressure is avoided; in addition, the automatic adjusting module is arranged, and the conveying speed can be reversely adjusted according to the relative quantity change of the powder particles in the weight sensing barrel, so that the upper pressure and the printing uniformity of the powder particles in the printing nozzle are improved, and the quality and the effect of 3D printing parts are further improved. Therefore, the self-adjusting powder conveying device has a simple and reasonable structure, has the functions of dynamically conveying powder particles in a vibrating mode and reversely adjusting the conveying speed through the reverse flow, and can be used for a 3D printer.
Drawings
FIG. 1 is a schematic diagram of the structural principle of a self-adjusting powder delivery device that can be used in a 3D printer according to the present invention.
In the figure, 10 — powder particle bin; 101-air jet; 102-a feed opening; 103-tank support; 11-a conical charging barrel; 12-powder particles; 13-L scaffold a; 14-L scaffold B; 15-flexible reducing conveying pipe; 16-weight sensing bucket; 161-induction drum support plate; 17-nozzle tubule; 18-a print head; 19-nozzle holder; 21-conveying pipe adjusting mechanism A; 22-conveying pipe regulating mechanism B; 31-a slider boom; 32, fixing a sliding block; 33-horizontal moving rod; 34, a roller; 35-a lifting block; 351-arc track; 36-an induction spring; 37-L-shaped lifter; 38-weight balance spring; 41, fixing a hollow pipe; 42-a tension and compression spring; 43-sliding hollow tube.
Detailed Description
The invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the self-adjusting powder feeding apparatus for A3D printer according to the present invention includes a powder particle box 10 for containing powder particles 12, a conical hopper 11 fixedly installed on the powder particle box 10, and L brackets B14 and a13 installed below left and right sides of the powder particle box 10, respectively.
Referring to fig. 1, the left side and the right side of the middle lower part of the powder particle box 10 are respectively provided with an air nozzle 101, the central part of the lower bottom surface of the powder particle box 10 is provided with a feed opening 102, and two particle vibration modules which have the same structure and are used for enabling the powder particles 12 to vibrate and move towards the feed opening 102 are arranged in the air nozzles 101; a flexible reducing conveying pipe 15, a weight induction barrel 16, a nozzle thin pipe 17, a printing nozzle 18 and a nozzle frame 12 are arranged below the powder particle box 10; a feed opening 102 is formed in the center of the lower bottom surface of the powder particle box 10; the upper opening of the flexible reducing conveying pipe 15 is connected with the feed opening 102, the lower end of the flexible reducing conveying pipe extends into the weight sensing barrel 16, the lower end of the weight sensing barrel 16 is provided with a through hole connected with the upper opening of the nozzle thin pipe 17, and the lower end of the nozzle thin pipe 17 is in sliding connection with the printing nozzle 18 fixedly arranged on the nozzle frame 12.
The left and right sides of the weight-sensing barrel 16 are further provided with a barrel supporting plate 161 for supporting the total weight of the weight-sensing barrel 16.
The flexible reducing conveying pipe 15 is a flexible reducing hose, the inner diameters of the upper end and the lower end of the flexible reducing conveying pipe are large, and the inner diameter of the middle part of the flexible reducing conveying pipe is small. The characteristics of large upper and lower calibers and small middle calibers enable the powder particles 12 to flow through the flexible reducing conveying pipe, firstly pass through the upper large caliber and then pass through the middle small caliber, and then quickly diffuse to the lower large caliber to form a certain negative pressure, so that the fluency of conveying the powder particles 12 is improved, and the probability of blocking the powder particles 12 at the minimum inner diameter of the reducing hose is reduced.
The L support A13 and the L support B14 are respectively provided with an automatic adjusting module which can change the minimum inner diameter of the flexible reducing conveying pipe 15; the automatic adjusting module is connected with the induction barrel supporting plate 161; when the powder particles 12 in the weight induction barrel 16 increase, the automatic adjusting module enables the minimum inner diameter of the flexible reducing conveying pipe 15 to be reduced, and the conveying of the powder particles 12 is reduced; when the powder particles 12 in the weight induction barrel 16 are reduced, the automatic adjusting module increases the minimum inner diameter of the flexible reducing conveying pipe 15, so that the conveying of the powder particles 12 is accelerated.
The particle vibration module comprises a fixed hollow tube 41 which penetrates through the air jet 101 and is fixedly arranged in the powder particle box 10 along the horizontal direction, a sliding hollow tube 43 which is arranged on one end of the fixed hollow tube 41 extending into the powder particle box 10 in a sliding manner, and a tension and compression spring 42 which is arranged in the fixed hollow tube 41; the other end of the sliding hollow tube 43 is provided with a port baffle, and the two ends of the tension and compression spring 42 are respectively connected with the opening end of the fixed hollow tube 41 and the port baffle of the sliding hollow tube 43.
The upper ends of the L-bracket B14 and the L-bracket A13 are respectively provided with a box bracket 103, and the powder particle box 10 is fixedly connected with the two box brackets 103. The bin bracket 103 fixedly connects the powder particle bin 10 to the two L brackets, thereby eliminating the effect of the weight of the powder particle bin 10 on the stiffness of the weight balancing spring 38.
The automatic adjusting module comprises an L-shaped lifting rod 37 capable of lifting along the vertical direction, a lifting block 35 fixedly arranged at the upper end of the L-shaped lifting rod 37, a slider suspender 31 fixedly arranged at the bottom of the powder particle box 10, a fixed slider 32 arranged at the lower end of the slider suspender 31, a horizontal moving rod 33 capable of moving in the horizontal direction relative to the fixed slider 32, an induction spring 36 with the upper end and the lower end connected with a cross rod in the induction barrel supporting plate 161 and the L-shaped lifting rod 37 respectively, the upper end is connected with the cross rod of the L-shaped lifting rod 37, and the lower end is connected with a weight balance spring 38 connected with an L support B14 and an L support A13 respectively.
An arc-shaped track 351 is arranged on one side of the lifting block 35 close to the flexible reducing conveying pipe 15, one end of the horizontal moving rod 33 is provided with a roller 34 which can freely roll in the arc-shaped track 351, and the other end of the horizontal moving rod is connected with the middle part of the flexible reducing conveying pipe 15.
The L-shaped lifting rod 37 and the lifting block 35 in the left automatic adjusting module are arranged on the vertical rod of the L-shaped bracket B14 in a sliding manner; the L-shaped lifting rod 37 and the lifting block 35 in the automatic adjusting module on the right side are arranged on the vertical rod of the L-shaped support A13 in a sliding mode.
The lower end of the weight balance spring 38 in the left automatic adjustment module is connected to the cross bar in the L-shaped bracket B14, and the lower end of the weight balance spring 38 in the right automatic adjustment module is connected to the cross bar in the L-shaped bracket a 13. The initial high stiffness of the weight balance spring 38 is used to bear the total gravity of the L-shaped lifting frame 37, the lifting block 35 and the weight sensing barrel 16 filled with the stably transported powder particles 12, so as to reduce the compression deformation of the weight balance spring 38 under the action of the total weight of the three, thereby improving the sensitivity of the change of the powder particles 12 in the weight sensing barrel 16. The compression deformation of the weight balance spring 38 after bearing the total gravity of the L-shaped lifting frame 37, the lifting block 35 and the weight induction barrel 16 is the normal working compression deformation, and the corresponding state is the normal working state of the weight balance spring 38; the stiffness of the weight balance spring 38 is significantly reduced after the deflection thereof exceeds the normal working compression deflection, and the stiffness value is significantly smaller than the stiffness of the sense spring 35. The sensing spring 36 is primarily designed to take the total weight of the gravity sensing barrel 16 and the powder particles 12 inside the gravity sensing barrel 16, thereby allowing some deformation when the mass of the powder particles 12 inside the gravity sensing barrel 16 changes and transferring the change in gravity to the gravity balance spring 38. The induction spring 36 is a constant stiffness spring having a stiffness value not less than twice the stiffness value of the weight balance spring 38 after normal operation, so that when the mass of the powder particles 12 in the weight induction barrel 16 changes, the lifting displacement of the lifting block 35 is mainly controlled by the compression deformation change amount of the weight balance spring 38.
Horizontal distance between the middle part of the arc-shaped track 351 and the axis of the flexible reducing conveying pipe 15 is the largest, horizontal distance between the upper part of the arc-shaped track 351 and the axis of the flexible reducing conveying pipe 15 is gradually increased, and horizontal distance between the lower part of the arc-shaped track 351 and the axis of the flexible reducing conveying pipe 15 is gradually increased. The structural design of the arc-shaped track makes the structural symmetry of the lifting block 35 better, make the up-and-down lifting of the L-shaped lifting rod 37 more stable, in operation, the first half circular arc of the arc-shaped track 351 is used as the movement track of the roller 34 of the horizontal moving rod 34, when the conveying speed of the powder particles 12 is too fast, namely, the powder particles 12 inside the weight sensing barrel 16 increase, the compression deformation amount of the gravity balance spring 38 is obviously increased, the lifting block 35 is deviated from the initial optimal balance position, the first half circular arc of the arc-shaped track 351 pushes the horizontal moving rod 33 to move inwards, the minimum inner diameter of the flexible reducing conveying pipe 15 is reduced, and then the conveying speed of the powder particles 12 is reduced until the powder particles 12 return to the optimal conveying speed state. Thus, the conveying speed of the powder particles 12 is a decreasing function of the weight of the powder particles 12 in the weight sensing barrel 16.
The particle vibration module works according to the principle that: the gas jet pipe or the air gun is externally used for inflating aiming at the left gas jet port 101, and because the right end of the sliding hollow pipe 43 is provided with the port baffle, a container with an open left end is formed by the fixed hollow pipe 41 and the sliding hollow pipe 43, so that the gas gradually flows into the fixed hollow pipe 41 and the sliding hollow pipe 43 from the left gas jet port 10; along with the increase of the internal air pressure, the sliding hollow pipe 43 moves towards the direction close to the axis of the flexible reducing conveying pipe 15 relative to the fixed hollow pipe 41, and the tension and compression spring 42 is stretched, so that the tension spring 42 stores certain elastic potential energy until the sliding hollow pipe 43 moves to the innermost limit position; the air jet pipe or the air gun is removed, the air jet port 10 on the left side is in an open state, at the moment, the elastic potential energy stored by the extension spring 42 is larger than the air pressure in the sliding hollow pipe 43, and therefore the sliding hollow pipe 43 moves towards the direction which is far away from the axis of the flexible reducing conveying pipe 15 relative to the fixed hollow pipe 41 until the extension spring 42 generates a certain compression deformation amount; the hollow tube 43 is slid and then reciprocated until the elastic potential energy is consumed by the frictional potential energy in the powder particle box 10, and then it is stopped again, thereby completing the sequential vibration transportation process. The operating principle of right side granule vibration module is the same with left side granule vibration module, because powder granule 12 of powder granule case 10 middle and lower part constantly moves to the middle part under the promotion of the slip hollow tube 43 of the left and right sides to accelerated the speed that powder granule 12 got into flexible reducing conveyer pipe 15, avoided in the powder granule case 10 because of putting into a large amount of powder granules 12 and take place the phenomenon that pressure too big hinders powder granule 12 to flexible reducing conveyer pipe 15 and carry.
The working principle of the automatic adjusting module is as follows: the weight of the powder particles 12 in the weight-sensing barrel 16 is set in an initial optimum balance state with the weight-balancing spring 38, in which the roller 34 is located at the center of the upper half arc of the arc-shaped rail 351. When the printing nozzle 18 consumes the powder particles 12 too fast or the internal diameter of the flexible reducing conveying pipe 15 is reduced to reduce the powder particles 12 in the weight sensing barrel 16, that is, the total weight of the weight sensing barrel 16 is reduced, the pressure of the sensing spring 36 is reduced at this time, so that the L-shaped lifting rod 37 moves upwards to drive the lifting block 35 to move upwards, the roller 34 moves from the middle of the upper half arc of the arc track 351 to the lower part of the upper half arc of the arc track 351, and then the horizontal moving rod 33 is driven to move in the direction away from the axis of the flexible reducing conveying pipe 15, so that the minimum internal diameter of the flexible reducing conveying pipe 15 is increased, the conveying speed of the powder particles 12 is increased, and then the powder particles 12 in the weight sensing barrel 16 are gradually increased until the initial balance state is reached; on the contrary, when the total weight of weight induction barrel 16 became big, the pressure of induction spring 36 increased, thereby make L type lifter 37 downstream, gyro wheel 34 moved the upper portion of the first half circular arc of arc track 351 from the middle part of the first half circular arc of arc track 351, promote corresponding horizontal migration pole 34 to the direction motion of being close to flexible reducing conveyer pipe 15 axis, thereby the outer wall of extrusion flexible reducing conveyer pipe 15, reduce the minimum internal diameter of flexible reducing conveyer pipe 15, reduce the conveying speed of powder granule 12, make the powder granule 12 in the weight induction barrel 16 reduce gradually, until reaching initial balanced state. The balance is a dynamic balance, and the transport speed of the powder particles 12 is a decreasing function of the weight of the powder particles 12 in the weight-sensitive drum 16, thereby improving the transport uniformity of the powder particles within the print head 18.
The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through creative efforts should fall within the scope of the present invention.
Claims (6)
1. The utility model provides a can be used to self-interacting powder conveyor of 3D printer, is including powder granule case (10) that is used for holding powder granule (12), fixed install in toper charging bucket (11) on powder granule case (10), the symmetry install in L support B (14) and L support A (13) of powder granule case (10) left and right sides below, its characterized in that:
the left side and the right side of the middle lower part of the powder particle box (10) are respectively provided with an air nozzle (101), the central part of the lower bottom surface of the powder particle box (10) is provided with a feed opening (102), and two particle vibration modules which have the same structure and are used for enabling the powder particles (12) to vibrate and move towards the feed opening (102) are arranged in the air nozzles (101);
a flexible reducing conveying pipe (15), a weight sensing barrel (16), a nozzle thin pipe (17), a printing nozzle (18) and a nozzle frame (19) are arranged below the powder particle box (10); the upper opening of the flexible reducing conveying pipe (15) is connected with the feed opening (102), the lower end of the flexible reducing conveying pipe (15) extends into the weight induction barrel (16), the feed opening at the bottom of the weight induction barrel (16) is connected with the upper opening of the nozzle thin pipe (17), and the lower end of the nozzle thin pipe (17) is connected with the printing nozzle (18) fixedly arranged on the nozzle frame (19) in a sliding manner; the left side and the right side of the weight induction barrel (16) are provided with induction barrel supporting plates (161) for supporting the total weight of the weight induction barrel (16);
the L support A (13) and the L support B (14) are respectively provided with an automatic adjusting module which can change the minimum inner diameter of the flexible reducing conveying pipe (15), and the automatic adjusting modules are connected with the induction barrel supporting plate (161); when the powder particles (12) in the weight sensing barrel (16) increase, the automatic adjusting module enables the minimum inner diameter of the flexible reducing conveying pipe (15) to be reduced, and conveying of the powder particles (12) is reduced; when the powder particles (12) in the weight sensing barrel (16) are reduced, the automatic adjusting module enables the minimum inner diameter of the flexible reducing conveying pipe (15) to be increased, and the conveying of the powder particles (12) is accelerated.
2. The self-adjusting powder delivery apparatus for use in a 3D printer according to claim 1, wherein: the particle vibration module comprises a fixed hollow tube (41) which penetrates through the air jet port (101) and is fixedly arranged in the powder particle box (10) along the horizontal direction, a sliding hollow tube (43) which is arranged on one end, extending into the powder particle box (10), of the fixed hollow tube (41) in a sliding manner, and a tension and compression spring (42) which is arranged in the fixed hollow tube (41); the other end of the sliding hollow pipe (43) is provided with a port baffle; and two ends of the tension and compression spring (42) are respectively connected with the opening end of the fixed hollow pipe (41) and the port baffle of the sliding hollow pipe (43).
3. The self-adjusting powder delivery apparatus for use in a 3D printer according to claim 2, wherein: the central lines of the air nozzles (101) on the left side and the right side are collinear.
4. The self-adjusting powder delivery apparatus for use in a 3D printer according to claim 1, wherein: the automatic adjusting module comprises an L-shaped lifting rod (37) which is arranged on the L-shaped support B (14) and the L-shaped support A (13) in a sliding way and can lift along the vertical direction, a lifting block (35) which is fixedly arranged at the upper end of the L-shaped lifting rod (37), a slide block suspender (31) which is fixedly arranged at the bottom of the powder particle box (10), and a fixed slide block (32) which is fixedly arranged at the lower end of the slide block suspender (31), a horizontal moving rod (33) which can be slidably arranged in the fixed sliding block (32) and can horizontally move, an induction spring (36) of which the upper end and the lower end are respectively connected with a cross rod in the induction barrel supporting plate (161) and the L-shaped lifting rod (37), a weight balance spring (38) of which the upper end is connected with the cross rod of the L-shaped lifting rod (37) and the lower end is respectively connected with the L support B (14) and the L support A (13);
an arc-shaped track (351) is arranged on one side, close to the flexible reducing conveying pipe (15), of the lifting block (35), one end of the horizontal moving rod (33) is provided with a roller (34) capable of freely rolling in the arc-shaped track (351), and the other end of the horizontal moving rod is connected with the outer wall of the middle part of the flexible reducing conveying pipe (15); when the powder particles (12) in the weight sensing barrel (16) are reduced, the L-shaped lifting rod (37) moves upwards, and the horizontal moving rod (33) loosens the flexible reducing conveying pipe (15) to increase the minimum inner diameter of the flexible reducing conveying pipe (15); when the powder particles (12) in the weight sensing barrel (16) are increased, the L-shaped lifting rod (37) moves downwards, and the horizontal moving rod (33) compresses the flexible reducing conveying pipe (15) to reduce the minimum inner diameter of the flexible reducing conveying pipe (15).
5. The self-adjusting powder delivery apparatus for use in a 3D printer according to claim 4, wherein: the horizontal distance between the middle part of the arc-shaped track (351) and the axis of the flexible reducing conveying pipe (15) is the minimum, the horizontal distance between the upper part of the arc-shaped track (351) and the axis of the flexible reducing conveying pipe (15) is gradually increased, and the horizontal distance between the lower part of the arc-shaped track (351) and the axis of the flexible reducing conveying pipe (15) is gradually increased.
6. The self-adjusting powder delivery apparatus for use in a 3D printer according to claim 1, wherein: the middle of the inner diameter of the flexible reducing conveying pipe (15) is small, and the two ends of the inner diameter are large.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110493624.1A CN113172885B (en) | 2021-05-07 | 2021-05-07 | Self-adjusting powder conveying device applicable to 3D printer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110493624.1A CN113172885B (en) | 2021-05-07 | 2021-05-07 | Self-adjusting powder conveying device applicable to 3D printer |
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| Publication Number | Publication Date |
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| CN113172885A true CN113172885A (en) | 2021-07-27 |
| CN113172885B CN113172885B (en) | 2022-07-22 |
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| CN202110493624.1A Active CN113172885B (en) | 2021-05-07 | 2021-05-07 | Self-adjusting powder conveying device applicable to 3D printer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113172885B (en) | 2022-07-22 |
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