CN111531885A - 3D printer - Google Patents
3D printer Download PDFInfo
- Publication number
- CN111531885A CN111531885A CN202010393469.1A CN202010393469A CN111531885A CN 111531885 A CN111531885 A CN 111531885A CN 202010393469 A CN202010393469 A CN 202010393469A CN 111531885 A CN111531885 A CN 111531885A
- Authority
- CN
- China
- Prior art keywords
- wire
- shell
- spray head
- pushing rod
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- 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
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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
Abstract
The invention discloses a 3D printer which comprises a rack, a lifting platform, a translation driving mechanism, a nozzle assembly, a rotating mechanism, a wire feeding mechanism, a cutting mechanism and a wire breaking pushing mechanism. The rotating mechanism comprises a turntable, a first motor connected to the middle of the turntable and a hanger connected with the first motor; the spray head assembly comprises a heat conducting block, a spray head, an electric heating pipe and a temperature sensor; the wire feeding mechanism comprises a shell, an upper throat pipe and a first group of pinch wheels for pinching wires; the cutting mechanism comprises a cutter and a base plate; the broken wire pushing mechanism comprises a wire pushing rod and a second group of pinch wheels for pinching the wire pushing rod. The 3D printer can realize the switching of the printing nozzles according to the needs, and can meet the requirement that the 3D printer adopting the fused deposition manufacturing technology can give consideration to both the printing efficiency and the printing precision; and the wire material in the lower throat pipe can be completely melted and consumed, so that the problem of nozzle blockage can be better avoided.
Description
Technical Field
The invention belongs to the technical field of printers, and particularly relates to a spray head mechanism of a 3D printer.
Background
3D printing is a rapid prototyping technique, also known as additive manufacturing, which is a technique that builds objects by layer-by-layer printing using bondable materials based on digital model files. Among them, 3D printers manufactured by fused deposition using fdm (fused deposition modeling) process are most widely used. The material of FDM is typically a thermoplastic material such as wax, ABS, nylon, etc., fed in filament form. The material is heated and melted in the spray head, the spray head moves along the section outline and the filling track of the part, meanwhile, the melted material is extruded out, and the material is rapidly solidified and is coagulated with the surrounding material.
Because the contour accuracy of the product is different at different positions, a sprayer with a larger aperture can be adopted to print at a position with low contour accuracy requirement in the 3D product printing process so as to improve the product forming efficiency; and a spray head with a smaller aperture is adopted to print at a position with higher contour precision requirement so as to improve the product precision.
However, the 3D printer in the prior art generally has only one specification of nozzles, and cannot achieve both printing efficiency and printing precision.
Disclosure of Invention
In view of this, the present invention provides a 3D printer to solve the technical problem that the existing 3D printer adopting the fused deposition manufacturing technology cannot switch the printer head online to achieve both printing efficiency and printing precision.
The invention discloses a 3D printer, which comprises a rack, a lifting platform, a translation driving mechanism, a spray head assembly, a rotating mechanism, a wire feeding mechanism, a cutting mechanism and a wire breaking pushing mechanism, wherein the lifting platform is arranged on the rack;
the rotating mechanism comprises a turntable, a first motor with a rotor shaft vertically connected to the middle part of the turntable and a hanger connected with the first motor;
the spray head assemblies are at least two groups, each group of spray head assemblies is circumferentially arrayed on the rotary table by taking the first motor rotor shaft as a center, each spray head assembly is composed of a heat conduction block arranged on the top surface of the rotary table, a spray head arranged on the heat conduction block and vertically penetrating through the rotary table downwards, an electric heating pipe and a temperature sensor arranged on the heat conduction block, and a lower throat pipe arranged on the heat conduction block, and an inner hole of the lower throat pipe is coaxially arranged with an inner hole of the spray head; the inner diameters of the spray heads of the spray head components are different;
the wire feeding mechanism comprises a shell and an upper throat pipe vertically arranged in the shell, and a wire pushing rod guide hole and a wire material guide hole communicated with the wire pushing rod guide hole are arranged in the upper throat pipe and are coaxially arranged with the inner hole of the lower waiting pipe; the wire feeding mechanism further comprises a first group of pinch wheels which are positioned above the inlets of the wire leading-in holes and used for pinching wires, wheel shafts of the first group of pinch wheels are horizontally arranged on the shell, a second motor for driving the wheel shafts of the first group of pinch wheels, a fan for blowing air into the shell and air holes are further arranged on the shell, a vertically arranged wire feeding guide pipe is arranged at the top of the shell, and the wire feeding guide pipe and the inlets of the wire leading-in holes are coaxially arranged; the hanging bracket of the rotating mechanism is connected with the shell;
the cutting mechanism comprises a cutter and a base plate which are arranged between the upper throat pipe and the lower throat pipe, the base plate is fixed on the bottom of the shell, and the cutting mechanism also comprises an electric push rod which is horizontally arranged on the shell and connected with the cutter;
the broken wire pushing mechanism comprises a wire pushing rod in sliding fit with a guide hole of the wire pushing rod and an inner hole of the lower throat pipe, a second group of clamping and conveying wheels which are located above an inlet of the guide hole of the wire pushing rod and used for clamping and conveying the wire pushing rod, and a wire pushing rod guide pipe which is arranged on the top of the shell and in sliding fit with the wire pushing rod, wherein wheel shafts of the second group of clamping and conveying wheels are horizontally arranged on the shell, and a third motor for driving wheel shafts of the second clamping and conveying wheels is arranged on the shell.
Furthermore, the lifting platform comprises a rectangular horizontal carrier plate, two guide rods and two lead screws, wherein the two guide rods and the two lead screws are vertically arranged at the corners of the horizontal carrier plate, the end parts of the two guide rods and the two lead screws are arranged on the rack, and a fourth motor for driving the lead screws is further arranged on the rack.
Furthermore, the translation driving mechanism comprises a first linear driver and a second linear driver which are vertically arranged, the first linear driver is arranged on the rack, the second linear driver is arranged on the first linear driver, and the shell of the wire feeding mechanism and the hanger of the rotating mechanism are arranged on the second linear driver.
The invention has the beneficial effects that:
1. according to the 3D printer, the cutting mechanism can cut off the filamentous materials from the upper throat pipe and the lower throat pipe in the printing process, and the rotating mechanism can rotate the nozzle assembly with the proper aperture to the position below the wire feeding mechanism, so that the printing nozzle can be switched as required, and the 3D printer adopting the fused deposition manufacturing technology can achieve both printing efficiency and printing precision.
2. According to the 3D printer, in the printing process, after the filament materials are cut off, the filament materials in the lower throat pipe can be continuously pushed downwards by the filament pushing rod of the filament breaking pushing mechanism, so that the filament breaking in the lower throat pipe can be completely melted and consumed, and the problem of nozzle blockage can be better avoided.
Drawings
Fig. 1 is a schematic perspective view of a 3D printer.
Fig. 2 is a schematic perspective view of a 3D printer nozzle.
Fig. 3 is a schematic sectional structure view of a 3D printer nozzle part.
Fig. 4 is another direction sectional structure schematic diagram of the 3D printer nozzle part, and the sectional direction of fig. 3 and 4 is vertical.
Detailed Description
The invention is further described below with reference to the figures and examples.
In this embodiment, the 3D printer includes frame 1, lift platform and translation actuating mechanism, still includes shower nozzle subassembly, rotary mechanism, wire feeder, shutdown mechanism and disconnected silk push mechanism.
The lifting platform in the embodiment comprises a rectangular horizontal carrier plate 2, and two guide rods 3 and two screw rods 4 vertically arranged at the corners of the horizontal carrier plate, wherein the end parts of the two guide rods and the two screw rods are arranged on a rack, and a fourth motor 5 for driving the screw rods is further arranged on the rack. Of course, the lifting platform can also take other forms in different embodiments.
In this embodiment, the translation driving mechanism includes a first linear driver 6 and a second linear driver 7, which are perpendicular to each other, the first linear driver is disposed on the frame, and the second linear driver is disposed on the first linear driver. In this embodiment, the first linear actuator 6 and the second linear actuator 7 are electric screws, but in different embodiments, the first linear actuator 6 and the second linear actuator 7 may also adopt other forms such as linear motors.
The rotary mechanism of the 3D printer in this embodiment includes a turntable 8, a first motor 9 with a rotor shaft vertically connected to the middle of the turntable, and a hanger 10 connected to the first motor.
The number of the spray head assemblies of the 3D printer is four in the embodiment, and the number of the spray head assemblies can be set to other numbers according to the requirement in different embodiments; each group of spray head assemblies are circumferentially arranged on the rotary table in an array mode by taking a first motor rotor shaft as a center, and each spray head assembly is composed of a heat conduction block 11 arranged on the top surface of the rotary table, a spray head 12 arranged on the heat conduction block and vertically penetrating through the rotary table downwards, an electric heating pipe 13 and a temperature sensor 14 arranged on the heat conduction block, and a lower throat pipe 15 arranged on the heat conduction block, wherein an inner hole of the lower throat pipe is coaxially arranged with an inner hole of the spray head; the inner diameters of the spray heads of the spray head assemblies are different in size.
The wire feeding mechanism of the 3D printer in the embodiment comprises a shell 16 and an upper throat 17 vertically arranged in the shell, a wire pushing rod guide hole 18 coaxially arranged with an inner hole of a lower waiting tube and a wire guide hole 19 communicated with the wire pushing rod guide hole are arranged in the upper throat, the wire guide hole 19 is composed of an inclined hole section 191 intersected with the wire pushing rod guide hole at an acute angle and a vertical hole section 192 connected with the upper end of the inclined hole section, the included angle between the inclined hole section and the wire pushing rod guide hole is preferably 20 degrees, the included angle between the inclined hole section and the wire pushing rod guide hole can be set to other values in different embodiments, and the inclined hole section and the vertical hole section are in smooth transition at the connection part. The wire feeding mechanism further comprises a first group of pinch wheels 20 which are located above the inlet of the wire leading-in hole and used for pinching the wire, wheel shafts of the first group of pinch wheels are horizontally arranged on the shell, a second motor 21 for driving the wheel shafts of the first group of pinch wheels, a fan 22 for blowing air into the shell and air holes 23 are further arranged on the shell, a vertically arranged wire feeding guide pipe 24 is arranged at the top of the shell, and vertical hole sections of the wire feeding guide pipe and the wire leading-in hole are coaxially arranged. And the hanging bracket of the rotating mechanism is connected with the shell.
The cutting mechanism of the 3D printer in the embodiment comprises a cutter 25 and a backing plate 26 which are arranged between an upper throat pipe and a lower throat pipe, wherein the backing plate is fixed on the bottom of a shell, and the cutting mechanism further comprises an electric push rod 27 which is horizontally arranged on the shell and connected with the cutter; the electric push rod can be an electromagnetic push rod.
The broken wire pushing mechanism of the 3D printer in this embodiment includes a wire pushing rod 28 in sliding fit with a guide hole of the wire pushing rod and an inner hole of the lower throat, a second group of pinch wheels 29 located above an inlet of the guide hole of the wire pushing rod and used for pinching the wire pushing rod, and a wire pushing rod guide pipe 30 arranged at the top of the housing and in sliding fit with the wire pushing rod, wherein wheel shafts of the second group of pinch wheels are horizontally arranged on the housing, and a third motor 31 for driving wheel shafts of the second pinch wheels is arranged on the housing.
In this embodiment 3D printer, when the shower nozzle needs to be changed at the printing in-process, it can cut off filiform material from between last choke and the lower choke through shutdown mechanism, and the back is cut off to the silk material, and the silk material that the throat was intraductal continues to move to the shower nozzle under the disconnected silk pushing mechanism drive, realizes arranging the shower nozzle into with disconnected silk, avoids remaining silk material to block up the shower nozzle. After the broken wires are consumed, the rotating mechanism rotates the nozzle assembly with the proper aperture to the position below the wire feeding mechanism, so that the printing nozzle switching is realized as required, and the 3D printer adopting the fused deposition manufacturing technology can meet the requirements of both printing efficiency and printing precision.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (3)
1.3D printer, including frame, lift platform and translation actuating mechanism, its characterized in that: the wire cutting machine also comprises a spray head assembly, a rotating mechanism, a wire feeding mechanism, a cutting mechanism and a wire breaking pushing mechanism;
the rotating mechanism comprises a turntable, a first motor with a rotor shaft vertically connected to the middle part of the turntable and a hanger connected with the first motor;
the spray head assemblies are at least two groups, each group of spray head assemblies is circumferentially arrayed on the rotary table by taking the first motor rotor shaft as a center, each spray head assembly is composed of a heat conduction block arranged on the top surface of the rotary table, a spray head arranged on the heat conduction block and vertically penetrating through the rotary table downwards, an electric heating pipe and a temperature sensor arranged on the heat conduction block, and a lower throat pipe arranged on the heat conduction block, and an inner hole of the lower throat pipe is coaxially arranged with an inner hole of the spray head; the inner diameters of the spray heads of the spray head components are different;
the wire feeding mechanism comprises a shell and an upper throat pipe vertically arranged in the shell, and a wire pushing rod guide hole and a wire material guide hole communicated with the wire pushing rod guide hole are arranged in the upper throat pipe and are coaxially arranged with the inner hole of the lower waiting pipe; the wire feeding mechanism further comprises a first group of pinch wheels which are positioned above the inlets of the wire leading-in holes and used for pinching wires, wheel shafts of the first group of pinch wheels are horizontally arranged on the shell, a second motor for driving the wheel shafts of the first group of pinch wheels, a fan for blowing air into the shell and air holes are further arranged on the shell, a vertically arranged wire feeding guide pipe is arranged at the top of the shell, and the wire feeding guide pipe and the inlets of the wire leading-in holes are coaxially arranged; the hanging bracket of the rotating mechanism is connected with the shell;
the cutting mechanism comprises a cutter and a base plate which are arranged between the upper throat pipe and the lower throat pipe, the base plate is fixed on the bottom of the shell, and the cutting mechanism also comprises an electric push rod which is horizontally arranged on the shell and connected with the cutter;
the broken wire pushing mechanism comprises a wire pushing rod in sliding fit with a guide hole of the wire pushing rod and an inner hole of the lower throat pipe, a second group of clamping and conveying wheels which are located above an inlet of the guide hole of the wire pushing rod and used for clamping and conveying the wire pushing rod, and a wire pushing rod guide pipe which is arranged on the top of the shell and in sliding fit with the wire pushing rod, wherein wheel shafts of the second group of clamping and conveying wheels are horizontally arranged on the shell, and a third motor for driving wheel shafts of the second clamping and conveying wheels is arranged on the shell.
2. The 3D printer of claim 1, wherein: the lifting platform comprises a rectangular horizontal carrier plate, two guide rods and two lead screws, wherein the two guide rods and the two lead screws are vertically arranged at the corners of the horizontal carrier plate, the end parts of the two guide rods and the two lead screws are arranged on the rack, and a fourth motor for driving the lead screws is further arranged on the rack.
3. The 3D printer of claim 1, wherein: the translation driving mechanism comprises a first linear driver and a second linear driver which are vertically arranged, the first linear driver is arranged on the rack, the second linear driver is arranged on the first linear driver, and the shell of the wire feeding mechanism and the hanger of the rotating mechanism are arranged on the second linear driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010393469.1A CN111531885A (en) | 2020-05-11 | 2020-05-11 | 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010393469.1A CN111531885A (en) | 2020-05-11 | 2020-05-11 | 3D printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111531885A true CN111531885A (en) | 2020-08-14 |
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ID=71972327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010393469.1A Pending CN111531885A (en) | 2020-05-11 | 2020-05-11 | 3D printer |
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| CN (1) | CN111531885A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729802A (en) * | 2016-02-19 | 2016-07-06 | 杭州棣凡科技有限公司 | Printing-precision-replaceable three-dimensional printer |
| CN207643703U (en) * | 2017-08-14 | 2018-07-24 | 四川农业大学 | A kind of automatic cleaning blocking 3D printer spray nozzle device |
| CN207709871U (en) * | 2018-01-16 | 2018-08-10 | 成都航空职业技术学院 | Metallic solution 3D printing nozzle |
| CN108582784A (en) * | 2018-05-31 | 2018-09-28 | 天津职业技术师范大学 | A kind of 3D printing head for material extrusion molding |
| CN208558314U (en) * | 2018-04-08 | 2019-03-01 | 珠海贝尔科技有限公司 | A kind of nozzle selection structure and multiinjector 3D printer |
| KR101953789B1 (en) * | 2018-10-18 | 2019-05-22 | 주식회사 3디나라 | A Switching nozzle lift type head for 3D Printer |
| CN209022456U (en) * | 2018-09-19 | 2019-06-25 | 时钟蕙 | A kind of 3D printer anti-clogging spray head |
| CN110328851A (en) * | 2019-06-24 | 2019-10-15 | 杭州喜马拉雅信息科技有限公司 | A kind of print head of 3D printer |
| CN110667114A (en) * | 2019-10-17 | 2020-01-10 | 吉林大学 | Integrated printing device and printing method for continuous fiber embedded material |
-
2020
- 2020-05-11 CN CN202010393469.1A patent/CN111531885A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729802A (en) * | 2016-02-19 | 2016-07-06 | 杭州棣凡科技有限公司 | Printing-precision-replaceable three-dimensional printer |
| CN207643703U (en) * | 2017-08-14 | 2018-07-24 | 四川农业大学 | A kind of automatic cleaning blocking 3D printer spray nozzle device |
| CN207709871U (en) * | 2018-01-16 | 2018-08-10 | 成都航空职业技术学院 | Metallic solution 3D printing nozzle |
| CN208558314U (en) * | 2018-04-08 | 2019-03-01 | 珠海贝尔科技有限公司 | A kind of nozzle selection structure and multiinjector 3D printer |
| CN108582784A (en) * | 2018-05-31 | 2018-09-28 | 天津职业技术师范大学 | A kind of 3D printing head for material extrusion molding |
| CN209022456U (en) * | 2018-09-19 | 2019-06-25 | 时钟蕙 | A kind of 3D printer anti-clogging spray head |
| KR101953789B1 (en) * | 2018-10-18 | 2019-05-22 | 주식회사 3디나라 | A Switching nozzle lift type head for 3D Printer |
| CN110328851A (en) * | 2019-06-24 | 2019-10-15 | 杭州喜马拉雅信息科技有限公司 | A kind of print head of 3D printer |
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