CN115366220A - Spacing detecting feeding system - Google Patents
Spacing detecting feeding system Download PDFInfo
- Publication number
- CN115366220A CN115366220A CN202211017264.9A CN202211017264A CN115366220A CN 115366220 A CN115366220 A CN 115366220A CN 202211017264 A CN202211017264 A CN 202211017264A CN 115366220 A CN115366220 A CN 115366220A
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- Prior art keywords
- limit
- screw rod
- limiting
- feeding system
- feeding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
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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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
Abstract
The invention discloses a limiting detection feeding system, which comprises: run through formula lead screw motor, control module and detector group, detector group includes: a mechanical limit switch, a photoelectric limit switch and a pull wire displacement sensor; the control module receives signals of the detector group and outputs control signals to the penetrating screw motor so as to control the action of the penetrating screw motor. According to the invention, through the matched use of the penetrating screw motor, the control module and the detector group, not only is an automatic, quantitative and continuous linear motion feeding mode realized, but also the feeding process can be monitored, so that firstly, the damage to equipment can be avoided, and secondly, the feeding condition can be conveniently known by personnel in time; quantitative feeding is realized, and feeding precision is ensured; stable structure and good reliability.
Description
Technical Field
The invention relates to the technical field of 3D printing equipment, in particular to a limiting detection feeding system.
Background
The printing material used by the photocuring ceramic 3D printer is a paste which is prepared in advance and has certain viscosity, when the 3D printer works, one layer of slurry needs to be laid every time one layer of exposure is carried out, the slurry is prefabricated in a specific container, and the quantitative feeding is carried out in time according to the printing requirement.
In order to realize automatic feeding, the technical problem that the cleaning is inconvenient and the structure of the driving system is complex is solved by the technical scheme that the driving system is used for driving the pressing plate to move for feeding, and the pressing plate directly contacts with slurry to push discharging when moving.
In order to solve the technical problems, the technical personnel in the field also provide a pneumatic extrusion type feeding mode, an inlet above a charging barrel is connected with a pneumatic control system, an outlet below the charging barrel is connected with an inlet of a material box through a guide pipe, and a feeding system conveys slurry by utilizing air pressure. The mode needs a gas source when in use, so a special gas supply system needs to be arranged, the use condition and the cost of equipment are increased, and the feeding precision of the conventional feeding system is low.
Disclosure of Invention
In order to solve the technical problem, the invention provides a limiting detection feeding system. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
The invention adopts the following technical scheme:
the invention provides a limiting detection feeding system, which comprises: run through formula lead screw motor, control module and detector group, detector group includes: a mechanical limit switch, a photoelectric limit switch and a pull wire displacement sensor;
the top end of a screw rod of the penetrating screw rod motor is in contact with a piston in the charging barrel, the bottom end of the screw rod is provided with a limit reference part, the mechanical limit switch and the photoelectric limit switch are arranged at the upper and lower movement limit positions of the limit reference part, and a pull rope of the pull rope displacement sensor is connected with the limit reference part;
the control module receives signals of the detector group and outputs control signals to the penetrating screw motor so as to control the action of the penetrating screw motor.
Further, the limiting detection feeding system further comprises: a cylindrical base; the penetrating type screw rod motor is installed at the bottom of the cylindrical base, the charging bucket is installed at the top of the cylindrical base, and the top end of a screw rod of the penetrating type screw rod motor penetrates through the cylindrical base and then is in contact with a piston inside the charging bucket.
Furthermore, a top cover is arranged at the top end of the screw rod of the through screw rod motor.
Further, the limiting detection feeding system further comprises: a torque restraint device; the torque restraint device includes: the limiting support is installed at the bottom of the cylindrical base, the limiting pieces are arranged on two sides of the limiting reference part, long hollow grooves are formed in the limiting support, and the limiting pieces stretch into the long hollow grooves.
Further, the limiting detection feeding system further comprises: a U-shaped bracket; the U-shaped support is arranged at the bottom of the limiting support, and the stay wire displacement sensor is arranged on the U-shaped support.
Furthermore, a through hole is formed in one side, connected with the limiting support, of the U-shaped support, and a pull rope of the stay wire displacement sensor penetrates through the through hole and then is connected with the limiting reference part.
Furthermore, a cover plate is arranged at the top of the charging bucket.
Further, the cylindrical base includes: the charging basket comprises a mounting top plate and a main body, wherein a cavity for accommodating the charging basket is formed in the main body, and the mounting top plate is arranged at the top of the main body.
The invention has the following beneficial effects: according to the invention, through the matched use of the penetrating screw motor, the control module and the detector group, not only is an automatic, quantitative and continuous linear motion feeding mode realized, but also the feeding process can be monitored, so that firstly, the damage to equipment can be avoided, and secondly, the feeding condition can be conveniently known by personnel in time; quantitative feeding is realized, and feeding precision is ensured; stable structure and good reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a 3D printer;
FIG. 2 is a schematic diagram of the external structure of the limit detection feeding system of the present invention;
FIG. 3 is a schematic view of the internal structure of the position-limiting detecting feeding system of the present invention;
fig. 4 is a control schematic of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, when the 3D printer works, a feeding device 101 supplies slurry, the slurry is pushed onto a printing platform 102, the slurry is scraped by a scraping device 103 in a translation manner, and finally the slurry is irradiated and cured by an opto-mechanical system 104.
As shown in fig. 2 to 4, the present invention provides a limiting detection feeding system for feeding a printing platform of a 3D printer, which specifically includes: the device comprises a through screw motor 1, a control module 2, a detector group 3, a cylindrical base 4, a torque restraint device 5, a U-shaped support 6, a cover plate 7 and a charging basket 8.
The detector set 3 includes: a mechanical limit switch 301, an optoelectronic limit switch 302, and a pull wire displacement sensor 303.
The cylindrical base 4 is used to carry other structures in the feeding system, which are fixed to a specific table of the 3D printing apparatus, and in particular may be mounted below the printing platform. The penetrating type screw motor 1 is installed at the bottom of the cylindrical base 4, the charging basket 8 is installed at the top of the cylindrical base 4, and the top end of a screw of the penetrating type screw motor 1 is in contact with a piston 801 inside the charging basket 8.
The through screw motor 1 is characterized in that a screw penetrates through the motor, the motor is a stepping motor, and angle control and speed control can be performed according to specific instructions. The screw rod is provided with T-shaped threads and has certain transmission precision, and when the motor works, the rotary motion is converted into the linear motion of the screw rod in the motor according to a received specific instruction, so that the advance/retreat of the screw rod is accurately realized. Therefore, when the through screw motor 1 works, the screw moves upwards to lift the piston 801 upwards, so that the slurry in the charging basket 8 is extruded out, and the feeding is realized.
The bottom end of a screw rod of the through screw rod motor 1 is provided with a limiting reference part 9, and the limiting reference part 9 is used for axial restraint and is used as a reference object to represent the moving direction, speed and reached position of the screw rod, so that the moving direction, speed and reached position of the piston 801 can be reflected. The mechanical limit switch 301 and the photoelectric limit switch 302 are disposed at the up-and-down movement limit position of the limit reference component 9, that is, the up-and-down movement limit position is provided with the mechanical limit switch 301 and the photoelectric limit switch 302 to limit the movement stroke of the screw rod.
When the slurry in the bucket 8 is emptied, the piston 801 reaches the topmost position, at which time the limit reference 9 reaches the topmost movement limit position. When the slurry in the bucket 8 is full, the piston 801 reaches the lowermost position, and at this time, the limit reference member 9 reaches the lowermost movement limit position. When the limit reference part 9 moves to the up-and-down movement limit position, the end part is inserted into the photoelectric limit switch 302, the photoelectric limit switch 302 sends a signal to the control module 2, and the control module 2 outputs a control signal to the through type screw rod motor 1 to stop the motor from moving. The mechanical limit switch 301 is used for forcibly powering off under the condition that the photoelectric limit switch 302 fails, namely when the photoelectric limit switch 302 fails, the limit reference part 9 touches the mechanical limit switch 301 to stop the motor, so that the mechanism can be effectively protected in the working process, and the equipment damage caused by exceeding the stroke is avoided.
The pull-string displacement sensor 303, also known as a pull-string type displacement sensor, functions to convert mechanical motion into an electrical signal that can be metered, recorded, or transmitted. In this embodiment, the pull rope of the pull-wire displacement sensor 303 is connected to the limit reference member 9, and when the lead screw moves up and down, the pull-wire displacement sensor 303 generates a specific displacement amount along with the lead screw, and uploads a detection signal to the control module 2 in real time, so that the position of the lead screw can be measured and calculated in real time. The movement precision of the motor lead screw can be further improved by the design of the stay wire displacement sensor 303, and the position of the lead screw can be monitored in real time.
In some embodiments, a display device may be provided, which is connected to the data output terminal of the control module 2, and sets a signal at any position by using the stay wire displacement sensor 303, so as to display the slurry remaining amount in the bucket.
The control module 2 can select an independent controller, and a PLC of the 3D printer can also be used as the control module 2 to analyze data and issue a control signal, and the control module 2 is configured to receive a signal from the detector group 3 and output the control signal to the through-type lead screw motor 1 to control the movement of the through-type lead screw motor 1, and simultaneously control the display device to display corresponding data, that is, the display device is controlled to display the slurry residual amount by using a detection signal of the stay wire displacement sensor 303.
The cylindrical base 4 includes: a top plate 401 and a main body 402 are attached. The main part 402 is provided with a cavity for accommodating the charging bucket 8, specifically, the lower half part of the charging bucket 8 is embedded in the main part 402, the mounting top plate 401 is arranged at the top of the main part 402, and the top end of a screw rod of the through screw rod motor 1 passes through the cylindrical base 4 and then contacts with a piston 801 in the charging bucket. A top plate 401 is mounted which is fixed to a table specific to the 3D printing apparatus. Above-mentioned structural design makes whole feeding system can stabilize the feed, and arranges rationally, and is small, occupation space not.
The top cover 802 is arranged at the top end of the screw rod of the through screw rod motor 1. The cap 802 is in contact with the piston 801, thereby ensuring stable pushing of the piston 801. The top of the charging basket 8 is provided with a cover plate 7, the bottom of the charging basket 8 is placed on the cylindrical base 4, the top of the charging basket is pressed by the cover plate 7, and an elastic sealing ring is arranged at the orifice of the charging basket to prevent slurry from overflowing.
When the through screw motor 1 does linear motion, axial restraint needs to be added, otherwise torsion can occur, so the torque restraint device 5 is designed. The torque restraint device 5 includes: a limiting bracket 501 and a limiting sheet 502.
The limiting support 501 is installed at the bottom of the cylindrical base 4 through bolts, the limiting pieces 502 are arranged on two sides of the limiting reference part 9, long hollow grooves 503 are formed in the limiting support 501, and the limiting pieces 502 extend into the long hollow grooves 503. The groove width of the long hollow-out groove 503 and the thickness of the limiting sheet 502 have tolerance matching requirements, and the long hollow-out groove is used for controlling the screw rod to twist when the screw rod moves up and down, so that the screw rod can stably run up and down. The limiting piece 502 and the limiting support 501 are additionally arranged and form a reaction force, so that moment balance is achieved, and the screw rod only generates axial displacement and does not rotate.
The U-shaped support 6 is arranged at the bottom of the limiting support 501, and the stay wire displacement sensor 303 is arranged on the U-shaped support 6. One side of the U-shaped support 6, which is connected with the limiting support 501, is provided with a through hole, and a pull rope of the pull rope displacement sensor 303 passes through the through hole and then is connected with the limiting reference part 9. The above structural design facilitates the detection of the stay wire displacement sensor 303.
When the automatic feeding device works, the top cover 802 on the penetrating type screw motor 1 pushes against the internal piston 801 to move for a specific displacement, and raw materials for printing are extruded out along with the specific displacement and taken away by other functional components, so that primary feeding is completed. When the next feeding is needed, the actions are repeated until the printing work is finished. When the screw rod moves to the upper limit position, the photoelectric limit switch 302 sends a signal to the control module, and when the material in the charging basket is used up, the charging is alarmed.
Through the structural design of the invention, under the instruction given by the 3D printer, the automatic, quantitative and continuous linear motion is realized, the detector group is added, the motion damage is effectively prevented, meanwhile, the real-time monitoring of the feeding state is realized, the real-time control is carried out according to the actual condition, and the real-time adjustable and accurate feeding is realized. The mechanism is simple and reliable in overall structure and easy to clean, achieves miniaturization, refinement and modularization, and meets the feeding requirement of the full-automatic 3D printer.
The invention realizes continuous feeding, and continuous multi-layer feeding is realized according to the number of the sliced workpieces; quantitative feeding is realized, different process parameters have different slicing thicknesses, the requirements of single feeding amount are different, and the feeding amount needs to be accurately adjusted along with the slicing thicknesses.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a spacing feeding system that detects which characterized in that includes: run through formula lead screw motor, control module and detector group, detector group includes: a mechanical limit switch, a photoelectric limit switch and a pull wire displacement sensor;
the top end of a screw rod of the penetrating screw rod motor is in contact with a piston in the charging barrel, the bottom end of the screw rod is provided with a limit reference part, the mechanical limit switch and the photoelectric limit switch are arranged at the upper and lower movement limit positions of the limit reference part, and a pull rope of the pull rope displacement sensor is connected with the limit reference part;
and the control module receives the signal of the detector group and outputs a control signal to the penetrating screw motor so as to control the action of the penetrating screw motor.
2. The limit detection feeding system according to claim 1, further comprising: a cylindrical base; the penetrating type screw rod motor is installed at the bottom of the cylindrical base, the charging bucket is installed at the top of the cylindrical base, and the top end of a screw rod of the penetrating type screw rod motor penetrates through the cylindrical base and then is in contact with a piston inside the charging bucket.
3. The limit detection feeding system according to claim 2, wherein a top cover is arranged at the top end of the screw rod of the through screw rod motor.
4. The limit detection feeding system according to claim 2, further comprising: a torque restraint device; the torque restraint device includes: the limiting device comprises a limiting support and limiting pieces, wherein the limiting support is installed at the bottom of the cylindrical base, the limiting pieces are arranged on two sides of the limiting reference part, long hollow grooves are formed in the limiting support, and the limiting pieces stretch into the long hollow grooves.
5. The limit detection feeding system according to claim 4, further comprising: a U-shaped bracket; the U-shaped support is arranged at the bottom of the limiting support, and the stay wire displacement sensor is arranged on the U-shaped support.
6. The limit detection feeding system according to claim 5, wherein a through hole is formed in one side of the U-shaped support connected with the limit support, and a pull rope of the pull rope displacement sensor penetrates through the through hole and then is connected with the limit reference member.
7. The limit detection feeding system according to claim 6, wherein a cover plate is arranged on the top of the charging bucket.
8. The limit detection feed system of claim 7, wherein the cylindrical base comprises: the charging basket comprises a mounting top plate and a main body, wherein a cavity for accommodating the charging basket is formed in the main body, and the mounting top plate is arranged at the top of the main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211017264.9A CN115366220A (en) | 2022-08-23 | 2022-08-23 | Spacing detecting feeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211017264.9A CN115366220A (en) | 2022-08-23 | 2022-08-23 | Spacing detecting feeding system |
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| Publication Number | Publication Date |
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| CN115366220A true CN115366220A (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211017264.9A Pending CN115366220A (en) | 2022-08-23 | 2022-08-23 | Spacing detecting feeding system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016082036A1 (en) * | 2014-11-24 | 2016-06-02 | Ladanyi Robert | Method and system for 3d printer with improved performance and 3d printer employing same |
| CN107696481A (en) * | 2017-09-26 | 2018-02-16 | 芜湖天梦信息科技有限公司 | A kind of powder feeder unit of 3D printer |
| CN210799249U (en) * | 2019-08-20 | 2020-06-19 | 重庆宏广机电工程有限公司 | High-viscosity material quantitative conveying device |
| CN211416667U (en) * | 2019-10-24 | 2020-09-04 | 西姆集团有限公司 | Online detection marking device for machining graphite electrode |
| CN212170964U (en) * | 2020-04-15 | 2020-12-18 | 苏州硕宏高分子材料有限公司 | Rubber auxiliary agent guiding mechanism flexible to adjust |
| CN214725039U (en) * | 2020-12-30 | 2021-11-16 | 东莞理工学院 | Multi-material high-solid-content ceramic printer with quickly-replaceable forming bin |
-
2022
- 2022-08-23 CN CN202211017264.9A patent/CN115366220A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016082036A1 (en) * | 2014-11-24 | 2016-06-02 | Ladanyi Robert | Method and system for 3d printer with improved performance and 3d printer employing same |
| CN107696481A (en) * | 2017-09-26 | 2018-02-16 | 芜湖天梦信息科技有限公司 | A kind of powder feeder unit of 3D printer |
| CN210799249U (en) * | 2019-08-20 | 2020-06-19 | 重庆宏广机电工程有限公司 | High-viscosity material quantitative conveying device |
| CN211416667U (en) * | 2019-10-24 | 2020-09-04 | 西姆集团有限公司 | Online detection marking device for machining graphite electrode |
| CN212170964U (en) * | 2020-04-15 | 2020-12-18 | 苏州硕宏高分子材料有限公司 | Rubber auxiliary agent guiding mechanism flexible to adjust |
| CN214725039U (en) * | 2020-12-30 | 2021-11-16 | 东莞理工学院 | Multi-material high-solid-content ceramic printer with quickly-replaceable forming bin |
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