CN110667116A - Multi-nozzle calibration mechanism of 3D printer and method for calibrating nozzles thereof - Google Patents
Multi-nozzle calibration mechanism of 3D printer and method for calibrating nozzles thereof Download PDFInfo
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- CN110667116A CN110667116A CN201910908255.0A CN201910908255A CN110667116A CN 110667116 A CN110667116 A CN 110667116A CN 201910908255 A CN201910908255 A CN 201910908255A CN 110667116 A CN110667116 A CN 110667116A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007921 spray Substances 0.000 claims abstract description 64
- 239000011159 matrix material Substances 0.000 claims abstract description 56
- 238000007639 printing Methods 0.000 claims description 90
- 238000003825 pressing Methods 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 20
- 239000011521 glass Substances 0.000 description 20
- 238000005507 spraying Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 238000010146 3D printing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229940045860 white wax Drugs 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
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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
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
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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
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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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- Optics & Photonics (AREA)
- Coating Apparatus (AREA)
Abstract
The invention discloses a multi-nozzle calibration mechanism of a 3D printer, which comprises a nozzle bottom plate, wherein a plurality of nozzle bodies are arranged on the nozzle bottom plate, mounting openings are formed in the nozzle bottom plate and correspond to each nozzle body, and a positioning device and an adjusting device are arranged on each mounting opening and used for positioning the nozzle body and adjusting the nozzle body. The method for calibrating the spray head comprises the following steps: the first sprayer body is rotated through the rotating assembly, so that the nozzle dot matrix of the first sprayer body is parallel to the direction of the sprayer body moving along the y-axis connection line in the y-axis moving direction, and then the first sprayer body is used as a reference to calibrate the rest two sprayer bodies. The shower nozzle calibration is carried out through many shower nozzles calibration structure earlier before the delivery of a factory to many shower nozzles 3D printer, makes every shower nozzle body parallel to each other to reduce the error that 3D printed, improve and print the precision.
Description
Technical Field
The invention belongs to the field of 3D printing, and particularly relates to a multi-nozzle calibration mechanism of a 3D printer and a method for calibrating a nozzle by using the same.
Background
The 3D printer builds a three-dimensional model through an additive manufacturing method. The wax pattern 3D printer belongs to one type of additive manufacturing equipment, and is characterized in that blue wax is used as a model material, white wax is used as a supporting material, high-temperature heated wax is sprayed to a printing platform, and a model is built by stacking layer by layer. As the wax-spraying 3D printing model has the advantages of high precision, smooth surface and the like, the wax-spraying 3D printer is widely applied to the manufacturing industries of jewelry, aerospace, engines and the like. The printing materials used by the wax-spraying 3D printer are white wax and blue wax, the wax is filled in a container, the container is filled in an ink supply assembly, the blue wax in the container flows into the ink supply assembly and flows into a spray head through high-temperature heating, and the spray head sprays the wax layer by layer onto a printing panel to construct a three-dimensional model.
The existing wax-spraying 3D printer is generally provided with a single spray head, the printing speed is low, and the existing wax-spraying 3D printer is not suitable for printing a large-scale 3D model. Consequently, a many shower nozzles wax injection 3D printer has appeared, once only covers a plurality of printing areas through a plurality of shower nozzles to improve printing efficiency, greatly reduced the printing time, reduced model manufacturing cost. Because the shower nozzle subassembly is equipped with a plurality of shower nozzle bodies, the condition that appears nonparallel between the single shower nozzle body probably appears when the installation shower nozzle body, leads to the 3D model error of printing great, may even lead to printing the failure. Therefore, a 3D printer multi-nozzle calibration mechanism is needed, so that all the nozzle bodies on the nozzle assembly are parallel to each other.
Disclosure of Invention
The invention aims to provide a multi-nozzle calibration mechanism of a 3D printer and a method for calibrating nozzles thereof, which are used for calibrating each nozzle body to be parallel to each other, thereby reducing the error of 3D printing and improving the printing precision.
The utility model provides a many shower nozzles of 3D printer aligning gear which characterized in that: the sprayer comprises a sprayer bottom plate, wherein a plurality of sprayer bodies are arranged on the sprayer bottom plate, mounting holes are formed in the sprayer bottom plate corresponding to each sprayer body, and a positioning device for positioning the sprayer bodies and an adjusting device for adjusting the sprayer bodies are arranged on each mounting hole. The nozzle of shower nozzle body bottom is the dot matrix type, and the shower nozzle body removes along y axle and z axle when 3D prints, and print platform removes along the x axle to print material sprays to print platform on. When a single spray head body is calibrated, one side of the spray head body is arranged at the position of the positioning hole, the spray head body is enabled to rotate around the position of the positioning hole through the adjusting device until the nozzle dot matrix is mutually vertical to the connecting line along the horizontal direction and the connecting line along the vertical direction, and therefore the printing precision is guaranteed.
Further, positioner sets up the one side at the installing port, and adjusting device sets up the other side at the installing port, and positioner includes the locating hole, and adjusting device includes the rotor plate, and the rotor plate is equipped with spacing hole, and the shower nozzle body is equipped with first shower nozzle mount pad and second shower nozzle mount pad, first shower nozzle mount pad and locating hole phase-match, second shower nozzle mount pad and spacing hole phase-match, and shower nozzle body accessible adjusting device adjusts and rotates round the locating hole. The shower nozzle body is installed to locating hole department through first shower nozzle mount pad, and the spacing hole department on the rotor plate is installed to the second shower nozzle mount pad, drives the shower nozzle body through the rotation of rotor plate and winds the pivoted rotation of locating hole to calibrate.
Furthermore, the adjusting device also comprises a rotary push rod and a spring ejector rod, and the rotary push rod and the spring ejector rod are respectively abutted against the rotating plate. When the rotating push rod pushes the rotating plate, the rotating plate drives the nozzle body to rotate around the positioning hole, and the spring ejector rod abuts against the rotating plate and provides supporting force to limit the position of the rotating plate. The rotary push rod can be a micrometer screw which can accurately adjust the rotation angle and the left-right movement distance of the nozzle body. The spring ejector rod can be a spring plunger jackscrew, so that continuous support is provided for the rotating plate according to the position of the rotating plate.
Furthermore, the nozzle body comprises a first nozzle body, a second nozzle body and a third nozzle body, the mounting port comprises a first mounting port, a second mounting port and a third mounting port, the first nozzle body and the second nozzle body are positioned on the same line, and the third nozzle body is positioned below the first nozzle body and the second nozzle body. First shower nozzle body and second shower nozzle body spun can be equipped with certain clearance between the dot matrix of printing, and the printing time through the third shower nozzle body nozzle dot matrix of control below is in, can make third shower nozzle body spun print the dot matrix and fill these clearances to print through three shower nozzle body and increased the printing area, improved printing efficiency.
Further, first shower nozzle body is installed in first installation department, and rotary push rod and spring ejector pin are located the upper and lower both sides of rotor plate respectively, and the rotor plate is equipped with rotary push rod recess and ejector pin recess, and rotary push rod recess and rotary push rod phase-match, ejector pin recess and spring ejector pin phase-match. The first nozzle body is a reference nozzle, the installation space of the rotating assembly is large, and the rotating push rod and the spring push rod can be arranged on the upper side and the lower side of the rotating plate.
Further, the second shower nozzle body is installed in second installation department, and the rotor plate is equipped with protruding piece, and protruding piece even has the lever that compresses tightly, and the fulcrum that compresses tightly the lever is fixed in the rotor plate, and the one end that compresses tightly the lever is equipped with the rotary push rod recess, and the rotary push rod recess matches with the rotary push rod, and the other end that compresses tightly the lever offsets with spring ejector pin and protruding piece respectively, and one side that the rotor plate is close to the locating hole is equipped with horizontal limiting plate, and horizontal push rod horizontal installation is in the shower nozzle bottom plate, and horizontal limiting plate offsets with. The second nozzle mounting base of the second nozzle body is fixed at the position limiting hole of the rotating plate, the rotating push rod pushes one end of the pressing lever, the pressing lever rotates around the fulcrum, the other end of the pressing lever extrudes the protruding block, the rotating plate and the second nozzle body are driven to rotate around the positioning hole, and the spring ejector rod abuts against the protruding block. The first nozzle body is used as a reference when the second nozzle body is calibrated, and the distance between the first nozzle body and the second nozzle body is smaller, so that the pressing lever is used for pushing the rotating plate and the second nozzle body, the rotating push rod and the spring ejector rod are positioned on the same side of the rotating plate, and the installation space can be saved. The transverse push rod pushes the transverse limiting plate to enable the rotating plate and the second sprayer body to move left and right, and the distance between the second sprayer body and the first sprayer body is adjusted.
Further, the third shower nozzle body is installed in third installation department, and the rotor plate is equipped with the fixed block, and the fixed block offsets with rotary push rod and spring ejector pin, and one side that the rotor plate is close to the locating hole is equipped with horizontal limiting plate, and horizontal push rod horizontal installation is in the shower nozzle bottom plate, and horizontal limiting plate offsets with horizontal push rod. The rotary push rod pushes the fixing block to drive the rotary plate and the second spray head body to rotate, and the push rod and the spring ejector rod are located on the same side of the rotary plate, so that the installation space can be saved. The transverse push rod pushes the transverse limiting plate to enable the rotating plate and the third sprayer body to move left and right, and the distance between the third sprayer body and the first sprayer body in the horizontal direction is adjusted.
A method for calibrating a nozzle by a multi-nozzle calibration mechanism of a 3D printer is characterized by comprising the following steps:
(1) fixing a first spray head mounting seat of the first spray head body at the positioning hole through a bolt, fixing a second spray head mounting seat at the limiting hole on the rotating plate through a bolt, and fixing the rotating plate on the spray head bottom plate;
(2) the method comprises the following steps that a first nozzle body starts to print, a printing dot matrix is obtained on a printing platform, the printing dot matrix is connected along the vertical direction and is called a first x-axis connection line, the printing dot matrix is connected along the horizontal direction and is called a first y-axis connection line, and the included angle alpha between the first x-axis connection line and the first y-axis connection line is measured;
(3) if the alpha is outside the range of 90 degrees +/-0.3 degrees, loosening the rotating plate, pushing the rotating push rod, pushing the rotating plate by the rotating push rod, driving the first spray head body to rotate around the positioning hole, and providing supporting force for the rotating plate by the spring ejector rod;
(4) repeating the steps (1) and (2) until the included angle between the x-axis connecting line and the y-axis connecting line is within 90 +/-0.3 degrees, and fixing the first sprayer body to the first mounting opening;
(5) fixing a second nozzle body at a second mounting hole, starting printing by the first nozzle body and the second nozzle body, obtaining a printing dot matrix on a printing platform, connecting the printing dot matrix obtained by the second nozzle body along the horizontal direction, namely a second y-axis connection line, and measuring an included angle beta between the first x-axis connection line and the second y-axis connection line;
(6) repeating the steps (3) and (4) to calibrate the second sprayer body;
(7) fixing a third nozzle body at a third mounting hole, starting printing by the first nozzle body and the third nozzle body, obtaining a printing dot matrix on a printing platform, connecting the printing dot matrix obtained by the third nozzle body along the horizontal direction, namely a third y-axis connection line, and measuring an included angle gamma between the first x-axis connection line and the third y-axis connection line;
(8) and (5) repeating the steps (3) and (4) to calibrate the third spray head body, thereby finishing the calibration of the whole printing spray head.
The first showerhead body is calibrated to serve as a reference showerhead. During calibration, the printing platform moves along the x axis, and the first nozzle body is ejected on the printing platform at regular time to obtain a printing dot matrix. The offset angle of the first spray head body in the y-axis direction can be measured through the sprayed printed dot matrix, the distance to be moved by the rotating push rod in the rotating assembly is calculated according to the measured offset angle and the distance between the positioning hole and the limiting hole, the first spray head body is selectively calibrated through the rotating assembly, and the steps are repeated until the offset angle of the first spray head body in the y-axis direction is within an error range.
And then, calibrating the second spray head body or the third spray head body by taking the first spray head body as a reference, measuring an included angle between a connecting line of a printing dot matrix sprayed by the second spray head body or the third spray head body in the horizontal direction and a connecting line of the printing dot matrix sprayed by the first spray head body in the vertical direction, and performing the same steps when calibrating the first spray head body. Finally, the calibration of the three spray head bodies is realized, the three spray head bodies are guaranteed to be parallel to each other, and the calibration mode is accurate and effective.
Further, in the step (6), the rotating push rod is pushed to push the pressing lever, the pressing lever rotates around the fulcrum and extrudes the protruding block, and the second spray head is driven to rotate around the positioning hole. The second shower nozzle body calibrates through compressing tightly the lever, and rotatory push rod and spring ejector pin lie in the same one side of rotor plate, have practiced thrift installation space.
Further, in the step (7), the rotating push rod is pushed to rotate the fixing block, so that the rotating plate and the third nozzle body are driven to rotate around the positioning hole. The rotor plate has set up the fixed block, and rotary push rod and spring ejector pin are located the both sides of fixed block, and the third shower nozzle body is calibrated through the fixed block, has practiced thrift installation space.
Further, after the step (7), the first nozzle body, the second nozzle body and the third nozzle body start to print, a print dot matrix of three areas is obtained on the printing platform, the leftmost end of the first dot matrix area printed by the first nozzle body is called a first left connecting line along the x-axis connecting line, the rightmost end of the second dot matrix area printed by the second nozzle body is called a second right connecting line along the x-axis connecting line, the left and right ends of the third dot matrix area printed by the third nozzle body are called a third left connecting line and a third right connecting line along the x-axis connecting line respectively, and whether the third right connecting line is aligned with the first left connecting line and whether the third left connecting line is aligned with the first right connecting line are observed. Because the third shower nozzle body is located the below of other two shower nozzle bodies, in order to guarantee that the line of the printing dot matrix of three shower nozzle body spun is perpendicular at the line of horizontal direction and the line of vertical direction mutually, consequently need rectify the left and right positions of second shower nozzle body and third shower nozzle body.
Further, if the third right connecting line and the first left connecting line are not aligned, the transverse push rod at the third mounting opening is rotated, the transverse push rod abuts against the transverse limiting plate at the third mounting opening, and the third spray head body is driven to move left and right. And correcting the left and right positions of the third sprayer body according to the first sprayer body to align the connecting line on the right side of the third sprayer body with the connecting line on the left side of the first sprayer body.
Further, if the third left connecting line and the second right connecting line are not aligned, the transverse push rod at the second mounting opening is rotated, the transverse push rod abuts against the transverse limiting plate at the second mounting opening, and the second spray head body is driven to move left and right. And correcting the left and right positions of the second sprayer body according to the third sprayer body to align the connecting line on the left side of the third sprayer body with the connecting line on the right side of the second sprayer body.
And (3) calculating the distance to be moved by the first micrometer screw according to the offset angle between the connecting lines and the distance between the positioning hole and the limiting hole. The first micrometer screw can accurately push the rotating plate according to the calculated distance, so that the accuracy of the spray head is improved.
Further, if the third right connecting line is not aligned with the first left connecting line or the third left connecting line is not aligned with the second right connecting line, the distance to be moved by the second micrometer caliper is calculated according to the distance between the two connecting lines. The second micrometer caliper can accurately and transversely move the rotating plate according to the calculated distance, so that the printing dot matrixes sprayed by the three spray heads are all in the same straight line in the horizontal direction and the vertical direction.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the multi-nozzle 3D printer firstly carries out nozzle calibration through the multi-nozzle calibration mechanism before leaving the factory, so that each nozzle body is parallel to each other, the error of 3D printing is reduced, and the printing precision is improved. The method has the following specific beneficial effects:
1. when the spray head body is calibrated, the spray head body rotates around the positioning hole until the nozzle dot matrix is required to be parallel to the direction of the spray head body moving on the y axis along the y axis connecting line, so that the printing precision is guaranteed.
2. The shower nozzle body is installed on the rotor plate, and when the rotary push rod promoted the rotor plate, the rotor plate drove the shower nozzle body and revolved around the locating hole, and spring ejector pin offseted with the rotor plate and provided the holding power, and the restriction rotor plate's position to realize the calibration of shower nozzle body.
3. The rotating plates of the second sprayer body and the third sprayer body are also provided with transverse ejector rods and are pushed by the transverse push rods to calibrate the left and right positions of the second sprayer body and the third sprayer body, so that three printing lattices sprayed by the three sprayer bodies can form a whole uniformly distributed printing lattice.
4. The rotary push rod is a first spiral micrometer, the transverse push rod is a second spiral micrometer, and the spring ejector rod is a spring plunger jackscrew. The first micrometer screw can accurately adjust the rotation angle of the spray head body, the second micrometer screw can accurately adjust the left and right positions of the spray head body, and the spring plunger jackscrew provides continuous support for the rotating plate according to the position of the rotating plate.
5. Because the shower nozzle body quantity is a plurality of, the mutual position of the rotor plate, the rotatory push rod and the spring ejector pin of every installing port is adjusted according to printing the bottom plate, saves installation space.
6. During calibration, the first spray head body is calibrated firstly, and then the first spray head body is used as a reference for calibrating the rest two spray head bodies, so that the calibration mode is simple and effective.
Drawings
FIG. 1 is a schematic structural diagram of a multi-nozzle calibration mechanism of a 3D printer in a top view direction according to the present invention;
FIG. 2 is a schematic structural diagram of a multi-nozzle calibration mechanism of a 3D printer according to the present invention;
FIG. 3 is a schematic structural view of the sprinkler body of FIG. 1 when not installed;
FIG. 4 is a schematic view of a nozzle array according to the present invention.
FIG. 5 is a schematic view of a printed dot matrix obtained by simultaneously jetting three nozzle bodies according to the present invention;
fig. 6 is a schematic diagram of a printed dot matrix obtained after controlling the ejection time of the third nozzle body according to the present invention.
Wherein, 1-a nozzle bottom plate; 2-a first nozzle body; 3-a second nozzle body; 4-a third nozzle body; 5-a first mounting port; 6-a second mounting port; 7-a third mounting opening; 8-positioning holes; 9-a limiting hole; 10-a first nozzle mount; 11-a second showerhead mount; 12-a first micrometer screw; 13-spring plunger jackscrew; 14-a first rotating plate; 15-a second rotating plate; 16-a third rotating plate; 17-rotating the push rod groove; 18-a mandril groove; 19-raised blocks; 20-a compression lever; 21-transverse limiting plate; 22-a second micrometer screw; 23-fixing blocks; 24-a nozzle lattice; 25-printing a dot matrix; 26-first x-axis line; 27-first y-axis line; 28-second y-axis line; 29-third y-axis line; 30-a first left connecting line; 31-third left connecting line; 32-third right connecting line; 33-second right connecting line.
Detailed Description
As shown in fig. 1 to 4, the multi-nozzle calibration mechanism for the 3D printer comprises a nozzle base plate 1, three nozzle bodies are mounted on the nozzle base plate 1, and a nozzle dot matrix 24 is arranged at the bottom of each nozzle body. The sprayer body comprises a first sprayer body 2, a second sprayer body 3 and a third sprayer body 4, wherein the first sprayer body 2 and the second sprayer body 3 are positioned on the same line, and the third sprayer body 4 is positioned below the first sprayer body 2 and the second sprayer body 3. First shower nozzle body 2 and 3 spun printing dot matrixes of second shower nozzle body can be equipped with certain clearance between, and through the printing time of the third shower nozzle body 4 nozzle dot matrix 24 of control below, can make the third shower nozzle body 4 spun printing dot matrix 25 fill these clearances to print through three shower nozzle body and increased the printing region, improved printing efficiency.
The nozzle region is provided with nozzle lattices 24, the intervals between the nozzle lattices 24 are the same, the transverse connecting lines of the nozzle lattices 24 are horizontally parallel, and the longitudinal connecting lines of the nozzle lattices 24 are provided with included angles in the vertical direction. Because the vertical line of nozzle dot matrix 24 is equipped with the contained angle in vertical direction, two adjacent nozzle points stagger each other, and the interval of two adjacent nozzle spun lines can be littleer to improve 3D printer's resolution ratio. By controlling the firing time of individual nozzle dots in the nozzle dot matrix 24, dots in the longitudinal direction in the nozzle dot matrix 24 can be fired in a straight vertical line.
The nozzle bottom plate 1 is provided with a mounting port, and the mounting port comprises a first mounting port 5, a second mounting port 6 and a third mounting port 7. The first nozzle body 2 is installed in first installing port 5 department, and one side of first installing port 5 is equipped with locating hole 8, and the opposite side of first installing port 5 is equipped with spacing hole 9, and the shower nozzle body is equipped with first shower nozzle mount pad 10 and second shower nozzle mount pad 11, and first shower nozzle mount pad 10 and locating hole 8 phase-match, second shower nozzle mount pad 11 and spacing hole 9 phase-match, the shower nozzle body can be rotatory around locating hole 8.
The first nozzle body 2 is installed at the first installation opening 5, the rotary push rod and the spring ejector rod are respectively located on the upper side and the lower side of the first rotating plate 14, the first rotating plate 14 is provided with a rotary push rod groove 17 and an ejector rod groove 18, the rotary push rod groove 17 is matched with the rotary push rod, and the ejector rod groove 18 is matched with the spring ejector rod. The rotary push rod is a first micrometer caliper 12, and the spring ejector rod is a spring plunger jackscrew 13. The micrometer screw can precisely adjust the rotation angle of the nozzle body, and the spring plunger jackscrew 13 provides continuous support for the first rotating plate 14 according to the position of the first rotating plate 14. The first nozzle body 2 is mounted on the first rotating plate 14, when the first micrometer screw 12 pushes the first rotating plate 14, the first rotating plate 14 drives the nozzle body to rotate around the positioning hole 8, and the spring plunger jackscrew 13 abuts against the first rotating plate 14 and provides a supporting force to limit the position of the first rotating plate 14. Since the first nozzle body 2 is a reference nozzle, the installation space of the rotary assembly is large, and the first micrometer screw 12 and the spring plunger jack 13 can be disposed at the upper and lower sides of the first rotary plate 14.
The second nozzle body 3 is arranged at the second mounting opening 6, the second rotating plate 15 is provided with a protruding block 19, the protruding block 19 is connected with a pressing lever 20, a fulcrum of the pressing lever 20 is fixed on the second rotating plate 15, one end of the pressing lever 20 is provided with a lever groove 21, the lever groove 21 is matched with the first spiral micrometer 12, the other end of the pressing lever 20 abuts against the spring plunger jackscrew 13 and the protruding block 19 respectively, one side of the second rotating plate 15, which is close to the positioning hole 8, is provided with a transverse limiting plate 21, the transverse push rod is horizontally arranged on the nozzle bottom plate 1, and the transverse limiting plate 21 abuts against the transverse push rod. The transverse push rod is a second micrometer screw 22. The second nozzle mounting base 11 of the second nozzle body 3 is fixed at the position of the limiting hole 9 of the second rotating plate 15, the first micrometer screw 12 pushes one end of the pressing lever 20, the pressing lever 20 rotates around a fulcrum, the other end of the pressing lever 20 extrudes the protruding block 19, so that the second rotating plate 15 and the second nozzle body 3 are driven to rotate around the positioning hole 8, and the spring plunger jackscrew 13 abuts against the protruding block 19. When the second nozzle body 3 is calibrated, the first nozzle body 2 is used as a reference, and the first nozzle body 2 and the second nozzle body 3 are positioned in the same row and have a small distance, so that the pressing lever 20 is used for pushing the second rotating plate 15 and the second nozzle body 3, and the first micrometer screw 12 and the spring plunger jackscrew 13 are positioned on the same side of the second rotating plate 15, so that the installation space can be saved. The second micrometer screw 22 pushes the transverse limiting plate 21 to move the second rotating plate 15 and the second nozzle body 3 left and right, so as to adjust the distance between the second nozzle body 3 and the first nozzle body 2.
The third nozzle body 4 is arranged at the third mounting opening 7, the third rotating plate 16 is provided with a fixing block 23, the fixing block 23 abuts against the first spiral micrometer 12 and the spring plunger jackscrew 13, one side, close to the positioning hole 8, of the third rotating plate 16 is provided with a transverse limiting plate 21, the second spiral micrometer 22 is horizontally arranged on the nozzle bottom plate 1, and the transverse limiting plate 21 abuts against the second spiral micrometer 22. The first micrometer screw 12 pushes the fixing block 23 to drive the third rotating plate 16 and the second nozzle body 3 to rotate, and the push rod and the spring plunger jackscrew 13 are located on the same side of the third rotating plate 16, so that the installation space can be saved. The second micrometer screw 22 pushes the transverse limiting plate 21 to move the third rotating plate 16 and the third nozzle body 4 left and right, and adjusts the distance between the third nozzle body 4 and the first nozzle body 2 in the horizontal direction.
The nozzle of shower nozzle body bottom is the dot matrix type, and the shower nozzle body removes along x axle and y axle when 3D prints, will print the material and spray to print platform on. When a single spray head body is calibrated, the first spray head mounting seat 10 is mounted at the position of the positioning hole 8, the second spray head mounting seat 11 is mounted at the position of the limiting hole 9, and the spray head body rotates around the positioning hole 8 until the nozzle dot matrix 24 is required to be parallel to the direction of the spray head body moving along the y-axis line, so that the printing precision is ensured. The intervals between the nozzle dot matrixes 24 are the same, the transverse connecting lines of the nozzle dot matrixes 24 are horizontally parallel, and the longitudinal connecting lines of the nozzle dot matrixes 24 are provided with included angles in the vertical direction. Because the vertical line of nozzle dot matrix 24 is equipped with the contained angle in vertical direction, two adjacent nozzle points stagger each other, and the interval of two adjacent nozzle spun lines can be littleer to improve 3D printer's resolution ratio.
When the heads are not moving along the x and y axes, the three head bodies eject a printed dot matrix 25 on the print platform as shown in fig. 5. When the head moves along the x-axis and the y-axis, and the 3D printer controls the printing time of the third head body 4, the three head bodies eject a printed dot matrix 25 on the printing platform as shown in fig. 6. In order to make the printing dot matrixes 25 of the three nozzle bodies form a whole uniformly distributed printing dot matrix 25, the three nozzle bodies need to be calibrated, so that the connecting lines of the printing dot matrix 25 in the horizontal direction are perpendicular to the connecting lines in the vertical direction, thereby increasing the printing area and improving the printing efficiency.
A method for calibrating a nozzle by a multi-nozzle calibration mechanism of a 3D printer comprises the following steps:
1. rotationally calibrating the first nozzle body 2:
(1) fixing a first nozzle mounting seat 10 of the first nozzle body 2 at a positioning hole 8 through a bolt, fixing a second nozzle mounting seat 11 at a limiting hole 9 on a first rotating plate 14 through a bolt, and fixing the first rotating plate 14 on a nozzle bottom plate 1;
(2) placing a glass slide on a printing platform, starting printing by the first nozzle body 2, moving the nozzle bottom plate 1 along the directions of the x axis and the y axis, starting printing by the first nozzle body 2, and obtaining a printing dot matrix 25 on the glass slide;
(3) taking the slide glass out of the printing platform, placing the slide glass on a projector, connecting the printed dot matrix 25 along the vertical direction, called a first x-axis connecting line 26, connecting the printed dot matrix 25 along the horizontal direction, called a first y-axis connecting line 27, and measuring an included angle alpha between the first x-axis connecting line 26 and the first y-axis connecting line 27 as shown in FIG. 5;
(4) if the included angle alpha is out of the range of 90 degrees +/-0.3 degrees, loosening the bolt between the first rotating plate 14 and the nozzle bottom plate 1, calculating the distance to be moved by the first micrometer screw 12 according to the offset angle and the distance between the positioning hole 8 and the limiting hole 9, and rotating the first micrometer screw 12 at the first mounting port 5 to rotate the first rotating plate 14 to drive the first nozzle body 2 to rotate around the positioning hole 8;
(5) repeating the steps 1(2) to 1(4) until the included angle alpha is within the range of 90 degrees +/-0.3 degrees, and screwing the bolt at the position of the limiting hole 9 to fix the first sprayer body 2;
2. rotationally calibrating the second nozzle body 3:
(1) fixing a first nozzle mounting seat 10 of the second nozzle body 3 at a positioning hole 8 through a bolt, fixing a second nozzle mounting seat 11 at a limiting hole 9 on a second rotating plate 15 through a bolt, and fixing the second rotating plate 15 on the nozzle bottom plate 1;
(2) placing a glass slide on a printing platform, starting printing by the first nozzle body 2 and the second nozzle body 3, moving the nozzle bottom plate 1 along the directions of the x axis and the y axis, and spraying and printing a dot matrix 25 on the glass slide;
(3) taking out the slide glass from the printing platform, placing the slide glass on a projector, connecting the printed dot matrix obtained by the second nozzle body along the horizontal direction, called as a second y-axis connection, leading the dotted line of the first x-axis connection 26 to the second y-axis connection 28, and measuring the included angle beta between the first x-axis connection 26 and the second y-axis connection 28 as shown in fig. 5;
(4) if the included angle beta is out of the range of 90 degrees +/-0.3 degrees, loosening the bolt between the second rotating plate 15 and the spray head bottom plate 1, calculating the distance to be moved by the first micrometer screw 12 according to the offset angle and the distance between the positioning hole 8 and the limiting hole 9, rotating the first micrometer screw 12 at the second mounting hole 6 to push the pressing lever 20, rotating the pressing lever 20 around the fulcrum and extruding the bulge block 19 to drive the second spray head to rotate around the positioning hole 8;
(5) repeating the steps 2(2) to 2(4) until the included angle beta is within the range of 90 degrees +/-0.3 degrees, and screwing the bolt at the position of the limiting hole 9 to fix the second sprayer body 3;
3. rotationally calibrating the third nozzle body 4:
(1) fixing a first nozzle mounting seat 10 of the third nozzle body 4 at a positioning hole 8 through a bolt, fixing a second nozzle mounting seat 11 at a limiting hole 9 on a third rotating plate 16 through a bolt, and fixing the third rotating plate 16 on the nozzle bottom plate 1;
(2) placing a glass slide on a printing platform, starting printing by the first nozzle body 2 and the third nozzle body 4, moving the nozzle bottom plate 1 along the directions of the x axis and the y axis, and spraying and printing a dot matrix 25 on the glass slide;
(3) taking out the slide glass from the printing platform, placing the slide glass on a projector, connecting the printed dot matrix obtained by the third nozzle body along the horizontal direction as a third y-axis connection line as shown in fig. 5, leading the dotted line of the first x-axis connection line 26 to the third y-axis connection line 29, and measuring the included angle gamma between the first x-axis connection line 26 and the third y-axis connection line 29;
(4) if the included angle gamma is out of the range of 90 degrees +/-0.3 degrees, loosening the bolt between the third rotating plate 16 and the spray head bottom plate 1, and rotating the first micrometer caliper 12 at the third mounting port 7 to rotate the fixing block 23 so as to drive the third rotating plate 16 and the third spray head body 4 to rotate around the positioning hole 8;
(5) repeating the step 3(2) and the step 3(4) until the included angle gamma is within the range of 90 degrees +/-0.3 degrees, and screwing the bolt at the position of the limiting hole 9 to fix the third sprayer body 4;
4. transverse alignment of the third nozzle body 4
(1) Placing a glass slide on a printing platform, starting printing by the first nozzle body 2 and the third nozzle body 4, moving the nozzle bottom plate 1 along the directions of the x axis and the y axis, and spraying and printing a dot matrix 25 on the glass slide;
(2) taking out the glass slide from the printing platform, placing the glass slide on a projector, connecting the leftmost end of the printing dot matrix 25 printed by the first nozzle body 2 along the x axis to form a first left connecting line 30, connecting the left end and the right end of the printing dot matrix 25 printed by the third nozzle body 4 along the x axis to form a third left connecting line 31 and a third right connecting line 32 respectively, and observing whether the third right connecting line 32 is aligned with the first left connecting line 30 or not;
(3) if the third right connecting line 32 is not aligned with the first left connecting line 30, calculating the distance between the two connecting lines, loosening the bolt between the third rotating plate 16 and the nozzle bottom plate 1, and rotating the second micrometer screw 22 transversely arranged at the third mounting opening 7 to enable the second micrometer screw 22 to be abutted against the transverse limiting plate 21 at the third mounting opening 7 so as to drive the third nozzle body 4 to move left and right;
(4) repeating the steps 4(1) to 4(3) until the third right connecting line 32 is aligned with the first left connecting line 30, and fixing the third nozzle body 4 on the nozzle bottom plate 1;
5. transverse alignment of the second spray head body 3
(1) Placing a glass slide on the printing platform, starting printing by the second nozzle body 3 and the third nozzle body 4, moving the nozzle bottom plate 1 along the directions of the x axis and the y axis, and spraying and printing a dot matrix 25 on the glass slide;
(2) taking out the glass slide from the printing platform, placing the glass slide on the projector, connecting the rightmost end of the printing dot matrix 25 printed by the second nozzle body 3 along the x axis, namely a second right connecting line 33, and observing whether the third left connecting line 31 and the second right connecting line 33 are aligned;
(3) if the third left connecting line 31 and the second right connecting line 33 are not aligned, calculating the distance between the two connecting lines, loosening the bolt between the second rotating plate 15 and the nozzle bottom plate 1, rotating the second micrometer screw 22 transversely arranged at the second mounting port 6, and enabling the second micrometer screw 22 to abut against the transverse limiting plate 21 at the second mounting port 6 to drive the second nozzle body 3 to move left and right;
(4) and (5), (1) to (5), (3) are repeated until the third left connecting line 31 and the second right connecting line 33 are aligned, the second sprayer body 3 is fixed on the sprayer base plate 1, and the whole calibration of the multiple sprayers is finished.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered in the protection scope of the present invention.
Claims (15)
1. The utility model provides a many shower nozzles of 3D printer aligning gear which characterized in that: the sprayer comprises a sprayer bottom plate, a plurality of sprayer bodies are arranged on the sprayer bottom plate, mounting openings are formed in the sprayer bottom plate corresponding to the sprayer bodies, and each mounting opening is provided with a positioning device used for positioning the sprayer body and an adjusting device used for adjusting the sprayer body.
2. The multi-nozzle calibration mechanism of a 3D printer according to claim 1, wherein: the positioning device is arranged on one side of the mounting opening, the adjusting device is arranged on the other side of the mounting opening, the positioning device comprises a positioning hole, the adjusting device comprises a rotating plate, the rotating plate is provided with a limiting hole, the sprayer body is provided with a first sprayer mounting seat and a second sprayer mounting seat, the first sprayer mounting seat is matched with the positioning hole, the second sprayer mounting seat is matched with the limiting hole, and the sprayer body can rotate around the positioning hole through adjustment of the adjusting device.
3. The mechanism of claim 2, wherein the mechanism further comprises: the adjusting device further comprises a rotating push rod and a spring push rod, and the rotating push rod and the spring push rod are respectively abutted to the rotating plate.
4. The mechanism of claim 1, wherein the mechanism further comprises: the sprayer body comprises a first sprayer body, a second sprayer body and a third sprayer body, the mounting ports comprise a first mounting port, a second mounting port and a third mounting port, the first sprayer body and the second sprayer body are located on the same line, and the third sprayer body is located below the first sprayer body and the second sprayer body.
5. The mechanism of claim 4, wherein the mechanism further comprises: the first sprayer body is installed at the first installation opening, the rotary push rod and the spring ejector rod are respectively located on the upper side and the lower side of the rotary plate, the rotary plate is provided with a rotary push rod groove and an ejector rod groove, the rotary push rod groove is matched with the rotary push rod, and the ejector rod groove is matched with the spring ejector rod.
6. The mechanism of claim 4, wherein the mechanism further comprises: the second nozzle body is installed at the second installation opening, the rotating plate is provided with a protruding block, the protruding block is connected with a pressing lever, a fulcrum of the pressing lever is fixed on the rotating plate, one end of the pressing lever is provided with a rotating push rod groove, the rotating push rod groove is matched with the rotating push rod, the other end of the pressing lever is respectively abutted to the spring ejector rod and the protruding block, one side, close to the positioning hole, of the rotating plate is provided with a transverse limiting plate, the transverse push rod is horizontally installed on the nozzle bottom plate, and the transverse limiting plate is abutted to the transverse push rod.
7. The mechanism of claim 4, wherein the mechanism further comprises: the third nozzle body is installed at the third installation opening, the rotating plate is provided with a fixed block, the fixed block abuts against the rotating push rod and the spring ejector rod, one side, close to the positioning hole, of the rotating plate is provided with a transverse limiting plate, the transverse push rod is horizontally installed on the nozzle bottom plate, and the transverse limiting plate abuts against the transverse push rod.
8. A method of calibrating a printhead using the 3D printer multi-printhead calibration mechanism of any one of claims 1 to 7, comprising the steps of:
(1) fixing a first spray head mounting seat of the first spray head body at the positioning hole through a bolt, fixing a second spray head mounting seat at the limiting hole on the rotating plate through a bolt, and fixing the rotating plate on the spray head bottom plate;
(2) the first nozzle body starts to print, a printing dot matrix is obtained on the printing platform, the printing dot matrix is connected along the directions of an x axis and a y axis, and the included angle between the two connecting lines is measured;
(3) if the included angle between the two connecting lines is out of the range of 90 degrees +/-0.3 degrees, the rotating plate is loosened, the rotating push rod is pushed, the rotating push rod pushes the rotating plate and drives the first spray head body to rotate around the positioning hole, and the spring ejector rod provides supporting force for the rotating plate;
(4) repeating the steps (1) and (2) until the included angle between the x-axis connecting line and the y-axis connecting line is within 90 +/-0.3 degrees, and fixing the first sprayer body to the first mounting opening;
(5) fixing a second nozzle body at a second installation opening, starting printing by using a first nozzle body and the second nozzle body, obtaining a printing dot matrix on a printing platform, connecting the printing dot matrix obtained by using the second nozzle body along the y-axis direction, connecting the printing dot matrix obtained by using the first nozzle body along the x-axis direction, and measuring an included angle between the two connecting lines;
(6) repeating the steps (3) and (4) to calibrate the second sprayer body;
(7) and (5) repeating the steps (5) to (6) to calibrate the third sprayer body.
9. The method for calibrating the nozzles of the multi-nozzle calibration mechanism of the 3D printer according to claim 8, wherein: and (6) loosening the bolt between the rotating plate and the spray head bottom plate, pushing the rotating push rod to push the pressing lever, rotating the pressing lever around the fulcrum and extruding the protruding block to drive the second spray head to rotate around the positioning hole.
10. The method for calibrating the nozzles of the multi-nozzle calibration mechanism of the 3D printer according to claim 8, wherein: in the step (7), the bolt between the rotating plate and the spray head bottom plate is loosened, the rotating push rod is pushed to rotate the fixing block, and the rotating plate and the third spray head body are driven to rotate around the positioning hole.
11. The method for calibrating the nozzles of the multi-nozzle calibration mechanism of the 3D printer according to claim 8, wherein: after the step (7), the first nozzle body, the second nozzle body and the third nozzle body start to print, a printing lattice of three areas is obtained on a printing platform, the leftmost end of a first lattice area printed by the first nozzle body is connected along an x-axis and is called a first left connecting line, the rightmost end of a second lattice area printed by the second nozzle body is connected along the x-axis and is called a second right connecting line, the left end and the right end of a third lattice area printed by the third nozzle body are connected along the x-axis and are respectively called a third left connecting line and a third right connecting line, and whether the third right connecting line is aligned with the first left connecting line and whether the third left connecting line is aligned with the first right connecting line are observed.
12. The method for calibrating a nozzle of a multi-nozzle calibration mechanism of a 3D printer according to claim 11, wherein: if the third right connecting line and the first left connecting line are not aligned, the transverse push rod at the third mounting opening is rotated, the transverse push rod abuts against the transverse limiting plate at the third mounting opening, and the third spray head body is driven to move left and right.
13. The method for calibrating a nozzle of a multi-nozzle calibration mechanism of a 3D printer according to claim 12, wherein: if the third left connecting line and the second right connecting line are not aligned, the transverse push rod at the second mounting opening is rotated, the transverse push rod abuts against the transverse limiting plate at the second mounting opening, and the second spray head body is driven to move left and right.
14. The method for calibrating a nozzle of a multi-nozzle calibration mechanism of a 3D printer according to claim 13, wherein: the rotary push rod is a first spiral micrometer, the transverse push rod is a second spiral micrometer, the spring ejector rod is a spring plunger jackscrew, and in the step (3), the distance to be moved by the first spiral micrometer is calculated according to the deviation angle between the connecting lines and the distance between the positioning hole and the limiting hole.
15. The method of claim 14, wherein the method further comprises the step of: and if the third right connecting line is not aligned with the first left connecting line or the third left connecting line is not aligned with the second right connecting line, calculating the distance to be moved by the second micrometer caliper according to the distance between the two connecting lines.
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Country or region after: China Address after: B-F3 Standard Factory Building, No. 518 Xianyuan Road, Wucheng District, Jinhua City, Zhejiang Province Applicant after: Zhejiang Shanzhu Group Co.,Ltd. Address before: B-F3 Standard Factory Building, No. 518 Xianyuan Road, Wucheng District, Jinhua City, Zhejiang Province Applicant before: ZHEJIANG FLASHFORGE 3D TECHNOLOGY Co.,Ltd. Country or region before: China |