CN211641001U - Variable linewidth extrude formula 3D and print shower nozzle device - Google Patents
Variable linewidth extrude formula 3D and print shower nozzle device Download PDFInfo
- Publication number
- CN211641001U CN211641001U CN201922413178.XU CN201922413178U CN211641001U CN 211641001 U CN211641001 U CN 211641001U CN 201922413178 U CN201922413178 U CN 201922413178U CN 211641001 U CN211641001 U CN 211641001U
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- Prior art keywords
- extrusion
- extrude
- fixing device
- head
- extrusion head
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- 238000001125 extrusion Methods 0.000 claims abstract description 94
- 238000010146 3D printing Methods 0.000 claims abstract description 16
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 9
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 9
- 241001330002 Bambuseae Species 0.000 claims abstract description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 9
- 239000011425 bamboo Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 238000007639 printing Methods 0.000 abstract description 35
- 230000033001 locomotion Effects 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000984642 Cura Species 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
Images
Abstract
The utility model discloses a variable linewidth extrude formula 3D and print shower nozzle device, including a feeding section of thick bamboo, extrude the head, extrude first fixing device, drive arrangement and controlling means, a feeding section of thick bamboo with extrude first fixing device and pass through sealed bearing and link to each other, the nozzle of extruding the head is oval, extrude first fixing device respectively with extrude head and drive arrangement and link to each other, drive arrangement, a feeding section of thick bamboo link to each other with controlling means. The utility model can randomly and accurately adjust the extrusion line width within a certain range, has simple structure and convenient installation, and can upgrade the 3D printing equipment adopting the conventional circular extrusion head only by simply wiring and adjusting 3D printing slicing software; the oval extrusion head is driven to rotate by a certain angle in the printing process, the width of the extrusion head nozzle in the perpendicular direction of the movement path tangent line can be changed, and the printing line width can be changed under the condition that the control layer thickness is not changed in cooperation with flow control.
Description
Technical Field
The utility model relates to a 3D printing apparatus specifically is a formula 3D that extrudes of variable linewidth prints shower nozzle device.
Background
The material extrusion type 3D printing is a 3D printing forming technology with wide application, common fused deposition manufacturing technology belongs to extrusion type 3D printing, and the material extrusion type 3D printing method has the advantages of low printing cost, high printing precision, suitability for various printing materials and the like. The existing extrusion type 3D printing equipment extrusion head nozzle part is usually circular in shape, the line width of an extrusion material is directly limited by the diameter of the extrusion head nozzle part, for common single-nozzle printing equipment, the fact that the same line width can only be set in a single printing process means that the diameter of the extrusion head nozzle part can only be selected according to the surface precision of a model with higher precision requirement to achieve ideal precision, the diameter is smaller, the requirement on precision is lower, the inner filling of the model which can be printed by adopting thicker line width can only adopt smaller line width, and the printing speed of the model is seriously reduced due to the printing principle of 3D printing layer-by-layer superposition; for a thin strip model structure with a part width higher than a single extrusion line width but smaller than a double extrusion line width, the traditional extrusion type printing equipment is difficult to cope with the structure.
The existing solutions and their disadvantages are as follows: 1. during printing, the extrusion heads with different diameters are manually replaced, but the manual intervention can cause the increase of printing time; 2. the multiple nozzle devices are arranged, each nozzle device is provided with the extrusion heads with different diameters, manual intervention is avoided, dislocation is easily caused due to vibration when the nozzle devices are automatically switched, and gradual change of line width cannot be realized; 3. flow regulation, where simply regulating the flow changes the line width, but due to material flowability, the layer thickness often differs from the set value.
Disclosure of Invention
The purpose of the invention is as follows: the utility model aims at providing a variable linewidth extrude formula 3D and print shower nozzle device.
The technical scheme is as follows: a variable linewidth extrude formula 3D and print shower nozzle device, including a feeding section of thick bamboo, extrude the head, extrude first fixing device, drive arrangement and controlling means, a feeding section of thick bamboo with extrude first fixing device and pass through sealed bearing and link to each other, the nozzle of extruding the head is oval, extrude first fixing device respectively with extrude head and drive arrangement and link to each other, drive arrangement, a feeding section of thick bamboo link to each other with controlling means.
The extrusion head comprises a polygonal bulge, a cylindrical pipeline and a nozzle, and the material in the feeding cylinder sequentially enters the polygonal bulge, the cylindrical pipeline and the nozzle and is extruded. The polygonal protrusions can block the extrusion head, and prevent the extrusion head from unexpectedly rotating in the printing process to influence the line width. The extrusion head fixing device comprises a limiting mechanism used for clamping the extrusion head. The limiting mechanism is a U-shaped limiting plate. The interval is greater than the external diameter of cylinder pipeline between the U-shaped limiting plate both wings, is less than the bellied external diameter of polygon, extrudes the head and inserts from extruding first fixing device after to the top, and the U-shaped limiting plate is inserted to the side hole, can avoid extruding the head and reciprocate, extrudes first fixing device central hole shape and size simultaneously and all is protruding identical with the polygon, can avoid extruding the head rotation. The extrusion head is fixedly connected with the extrusion head fixing device.
The driving device comprises a motor, a driving wheel and a belt, the motor drives the driving wheel to rotate, and the driving wheel is connected with the extrusion head fixing device through the belt. The belt is in a tensioning state, so that the rotating linear speed of the driving wheel and the rotating linear speed of the extrusion head fixing device are ensured to be the same.
The feeding cylinder is fixedly connected with the inner ring of the seal bearing, and the extrusion head fixing device is fixedly connected with the outer ring of the seal bearing. The feed cylinder is driven by a piston or screw to feed. The piston or the screw rod can move up and down freely along the vertical direction and has good sealing performance.
The sealing bearing is a self-lubricating sealing bearing, so that the material to be extruded is prevented from leaking and being polluted. The feeding cylinder is columnar. The motor is preferably a servomotor.
The working steps are as follows:
firstly, before printing is started, according to model precision requirements, setting printing line width D, printing speed v and layer thickness h of each part of a model in 3D printing slicing software, wherein the line width D can be selected between the length 2a of the long axis and the length 2b of the short axis of a mouth part of an elliptical extrusion head (a is not equal to b), setting the gradual change of the printing line width in the printing process, based on the given line width D, the 3D printing slicing software can generate a nozzle motion path, and simultaneously, the tangent line of the long axis and the motion path of the mouth part of the elliptical extrusion head can be obtained according to the line width Dthe included angle β is matched with the included angle α between the tangent line of the motion path generated and the X axis, the included angle gamma between the long axis of the nozzle of the elliptical extrusion head at any path point and the X axis is α + β, and the feeding speed v of the nozzle of the extrusion head at any moment can be obtained based on the layer thickness h, the line width d and the printing speed v1The slicing software generates a Gcode code according to the slicing software and uploads the Gcode code to the control device;
step two, in the printing process, the control device reads the Gcode and drives the nozzle of the extrusion head to move along the generated motion path, the control device drives the servo motor to work, a driving wheel at the shaft end of the servo motor drives the fixing device of the extrusion head to rotate through a belt, so that the included angle gamma between the long axis of the mouth part of the elliptical extrusion head and the X axis reaches the set value of the Gcode, and meanwhile, the control device adjusts the motion of a piston or a screw rod through air pressure adjustment and other modes, so that the feeding speed v of the nozzle is controlled1And when the set value of the Gcode is reached, the current layer is switched to the next layer after printing is finished, and the steps are repeated continuously until printing is finished.
Has the advantages that: compared with the prior art, the utility model, have following saliency characteristics:
1. the extrusion line width can be adjusted randomly and accurately within a certain range, the structure is simple, the installation is convenient, and 3D printing equipment adopting a conventional circular extrusion head can be upgraded only by simply wiring and adjusting 3D printing slicing software;
2. by driving the elliptical extrusion head to rotate by a certain angle in the printing process, the width of the nozzle of the extrusion head in the direction perpendicular to the tangent line of the motion path can be changed, and the thickness of the layer can be controlled to be unchanged by matching with flow control;
3. the elliptical extrusion head can be effectively fixed by using the extrusion head fixing device with the limiting mechanism, so that the influence of loosening and rotation on extrusion line width control in the printing process is avoided;
4. the extrusion head fixing device capable of freely rotating along the central axis of the sealing bearing is arranged, and the servo motor connected with the extrusion head fixing device through a belt can accurately adjust the rotating angle of the elliptical extrusion head and is convenient for replacing elliptical extrusion heads with different specifications;
5. the use of a sealed bearing with self-lubricating properties ensures that the material to be extruded does not leak and become contaminated.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the extrusion head 2 of the present invention;
fig. 3 is a schematic structural view of the U-shaped limiting plate 301 according to the present invention;
fig. 4 is a schematic view of a first printing state of the present invention;
FIG. 5 is a schematic view of a second printing state of the present invention;
fig. 6 is a schematic diagram of a third printing state of the present invention.
Detailed Description
The directions shown in the drawings of the specification are up, down, left and right.
As shown in fig. 1, the cylindrical feeding cylinder 1 is fixedly connected with the inner ring of the sealing bearing 6, and the extrusion head fixing device 3 is fixedly connected with the outer ring of the sealing bearing 6. The extrusion liquid in the feeding cylinder 1 is driven by air pressure or a screw rod and the like to be conveyed downwards. The extrusion head fixing device 3 is connected with a driving device 4. The belt 403 is driven by a driving wheel 402 fixed at the shaft end of the servo motor 401 to passively drive the extrusion head fixing device 3 connected with the belt 403, and the belt 403 is in a tension state, so that the same rotation linear speed of the driving wheel 402 and the extrusion head fixing device 3 can be ensured. The servo motor 401 is connected to a control device 5, and the control device 5 is preferably an electric control device for supplying power and driving signals to the servo motor 401 to drive the rotation thereof. The seal bearing 6 is a self-lubricating seal bearing.
As shown in fig. 2, the elliptical extrusion head 2 is fixedly connected with an extrusion head fixing device 3. The extrusion head 2 comprises a polygonal bulge 201, a cylindrical pipeline 202 and a nozzle 203, the polygonal bulge 201 is positioned at the top feeding end, and the material in the feeding cylinder 1 sequentially enters the polygonal bulge 201, the cylindrical pipeline 202 and the nozzle 203 and is extruded.
As shown in fig. 3, a limiting mechanism for locking the extrusion head 2 is provided in the extrusion head fixing device 3, and the extrusion head fixing device (3) includes a limiting mechanism for locking the extrusion head 2. The limiting mechanism is a U-shaped limiting plate 301, the distance between two wings of the U-shaped limiting plate 301 is slightly larger than the outer diameter of a cylindrical pipeline 202 of the extrusion head 2, the outer diameter of the polygonal bulge 201 part of the extrusion head 2 is obviously smaller, after the extrusion head 2 is inserted into the top, the U-shaped limiting plate 301 is inserted into a hole in the side face of the extrusion head fixing device 3, the extrusion head can be prevented from moving up and down, meanwhile, the shape and the size of a central hole of the extrusion head fixing device 3 are matched with those of the polygonal bulge 201, and the extrusion head 2.
The operation steps of the device comprise:
(1) before printing begins, a user sets printing line width D, printing speed v and layer thickness h of each part of a model in 3D printing slicing software according to the requirement on the precision of the model, the line width D can be freely selected between the length 2a of the long axis of the mouth part of the elliptical extrusion head 2 and the length 2b of the short axis of the mouth part of the elliptical extrusion head (a is not equal to b), gradual change of the printing line width in the printing process can be set through further setting, based on the given line width D, the 3D printing slicing software can generate a nozzle movement path of the extrusion head 2, meanwhile, an included angle β between the long axis of the mouth part of the elliptical extrusion head 2 and the movement path tangent can be obtained according to the line width D, and an included angle alpha between the generated movement path tangent and the X axis can be obtained by matching the included angle gamma alpha + β between the long axis of the elliptical extrusion head 2 and the X axis at any path point and the feeding speed1the slicing software (Simplify 3D, Cura, etc.) generates a Gcode according to the Gcode, and uploads the Gcode to the 3D printer electrical control device 5 (when D is 2a, the motion state of the elliptical extrusion head 2 is as shown in fig. 3, when γ is α + β, when 2b is < D < 2a, the motion state of the elliptical extrusion head 2 is as shown in fig. 4, when γ is α + β, and when D is 2b, the motion state of the elliptical extrusion head 2 is as shown in fig. 5, when β is 0, and γ is α);
(2) in the printing process, an electrical control device of the 3D printer reads a Gcode and drives a nozzle of the extrusion head 2 to move along a generated motion path, an electrical control device 5 drives a servo motor 401 to work, a driving wheel 402 at the shaft end of the servo motor 401 drives an extrusion head fixing device 3 to rotate through a belt 403, so that the included angle gamma between the long axis of the mouth of the elliptical extrusion head 2 and the X axis reaches the set value of the Gcode, and meanwhile, the electrical control device 5 adjusts the motion of an extrusion liquid in a feeding cylinder in modes of air pressure adjustment and the like, so that the motion of the extrusion liquid in the nozzle of the extrusion head 2 is controlledFeed speed v1And when the set value of the Gcode is reached, the current layer is switched to the next layer after printing is finished, and the steps are repeated continuously until printing is finished.
Claims (10)
1. The utility model provides a variable linewidth extrude formula 3D and print shower nozzle device which characterized in that: including a feeding section of thick bamboo (1), extrude head (2), extrude first fixing device (3), drive arrangement (4) and controlling means (5), a feeding section of thick bamboo (1) links to each other through sealed bearing (6) with extruding first fixing device (3), the nozzle of extruding head (2) is oval, extrude first fixing device (3) respectively with extrude head (2) and driving device (4) and link to each other, drive arrangement (4), a feeding section of thick bamboo (1) link to each other with controlling means (5).
2. The variable linewidth extrusion 3D print head apparatus of claim 1, wherein: the extrusion head (2) comprises a polygonal bulge (201), a cylindrical pipeline (202) and a nozzle (203), and materials in the feeding cylinder (1) sequentially enter the polygonal bulge (201), the cylindrical pipeline (202) and the nozzle (203) and then are extruded.
3. The variable linewidth extrusion 3D print head apparatus of claim 2, wherein: the extrusion head fixing device (3) comprises a limiting mechanism used for clamping the extrusion head (2).
4. The variable linewidth extrusion 3D print head apparatus of claim 3, wherein: the limiting mechanism is a U-shaped limiting plate (301).
5. The variable linewidth extrusion 3D printing head apparatus of claim 4, wherein: the distance between two wings of the U-shaped limiting plate (301) is larger than the outer diameter of the cylindrical pipeline (202) and smaller than the outer diameter of the polygonal bulge (201).
6. The variable linewidth extrusion 3D print head apparatus of claim 1, wherein: the extrusion head (2) is fixedly connected with the extrusion head fixing device (3).
7. The variable linewidth extrusion 3D print head apparatus of claim 1, wherein: drive arrangement (4) include motor (401), action wheel (402) and belt (403), motor (401) drive action wheel (402) rotate, action wheel (402) pass through belt (403) and extrude first fixing device (3) and link to each other.
8. The variable linewidth extrusion 3D print head apparatus of claim 1, wherein: the feeding cylinder (1) is fixedly connected with an inner ring of the sealing bearing (6), and the extrusion head fixing device (3) is fixedly connected with an outer ring of the sealing bearing (6).
9. The variable linewidth extrusion 3D print head apparatus of claim 1, wherein: the feeding cylinder (1) is driven to feed by a piston or a screw.
10. The variable linewidth extrusion 3D print head apparatus of claim 1, wherein: the sealing bearing (6) is a self-lubricating sealing bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922413178.XU CN211641001U (en) | 2019-12-27 | 2019-12-27 | Variable linewidth extrude formula 3D and print shower nozzle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922413178.XU CN211641001U (en) | 2019-12-27 | 2019-12-27 | Variable linewidth extrude formula 3D and print shower nozzle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211641001U true CN211641001U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922413178.XU Expired - Fee Related CN211641001U (en) | 2019-12-27 | 2019-12-27 | Variable linewidth extrude formula 3D and print shower nozzle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211641001U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743827A (en) * | 2020-12-23 | 2021-05-04 | 芜湖市爱三迪电子科技有限公司 | Diameter adjusting device for 3D printing wire |
| CN114800830A (en) * | 2022-05-31 | 2022-07-29 | 北京工业大学 | Cement-based 3D printing rock mass model fracture filling device and method |
| WO2022180290A1 (en) * | 2021-02-24 | 2022-09-01 | M. Torres Diseños Industriales, S.A.U. | Head for additive production machine, machine and system comprising the head |
-
2019
- 2019-12-27 CN CN201922413178.XU patent/CN211641001U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743827A (en) * | 2020-12-23 | 2021-05-04 | 芜湖市爱三迪电子科技有限公司 | Diameter adjusting device for 3D printing wire |
| CN112743827B (en) * | 2020-12-23 | 2024-04-05 | 芜湖市爱三迪电子科技有限公司 | Diameter adjusting device for 3D printing wire rod |
| WO2022180290A1 (en) * | 2021-02-24 | 2022-09-01 | M. Torres Diseños Industriales, S.A.U. | Head for additive production machine, machine and system comprising the head |
| ES2922048A1 (en) * | 2021-02-24 | 2022-09-07 | M Torres Disenos Ind S A Unipersonal | Heads for additive manufacturing machine, machine and system that includes said head (Machine-translation by Google Translate, not legally binding) |
| CN114800830A (en) * | 2022-05-31 | 2022-07-29 | 北京工业大学 | Cement-based 3D printing rock mass model fracture filling device and method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201009 |