CN2353768Y - Extrusion spray-nozzle structure of quick-acting forming system - Google Patents
Extrusion spray-nozzle structure of quick-acting forming system Download PDFInfo
- Publication number
- CN2353768Y CN2353768Y CN 98219118 CN98219118U CN2353768Y CN 2353768 Y CN2353768 Y CN 2353768Y CN 98219118 CN98219118 CN 98219118 CN 98219118 U CN98219118 U CN 98219118U CN 2353768 Y CN2353768 Y CN 2353768Y
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- Prior art keywords
- wire
- nozzle
- liquefier
- valve
- wire feeder
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- Expired - Lifetime
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- 238000001125 extrusion Methods 0.000 title description 2
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000007493 shaping process Methods 0.000 description 7
- 239000002861 polymer material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 4
- 239000000155 melt Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model belongs to the technical field of rapid formation and comprises a wire feeder member, a liquefier and a nozzle member, wherein, the wire feeder member is composed of an adjustable flexible large power driving gear and two friction wheels with adjustable separation distance, and a wire feeding flexible pipe is connected between the wire feeder member and the liquefier; the nozzle member is provided with a voltage-stabilizing overflow valve and an overflow passage; an outlet hole of the nozzle forms an angle with the overflow passage; the nozzle can also form a switchable double nozzle. The utility model can provide enough large driving force for feeding wire and enhance the anti-unstability capability of wires, simplifying the control requirement, and establishing the technical basis for enhancing the forming quality and the forming speed.
Description
The utility model belongs to the RP technique field, particularly the extruding jet structural design of rapid forming system.
Shower nozzle is a critical component of realizing the melt extruded stack shaping, be engaged in the orderly transfer that realizes material under the CAD information-driven with kinematic system, form from raw-material modality conversion to the accumulation path unit, and and then the formation of accumulation bonding layer by layer Three-dimensional Entity Components.Shower nozzle is prerequisite and the core that realizes piling up moulding.
Shower nozzle technology based on melt extruded stack shaping technology in the rapid forming system mainly contains the shower nozzle patented technology of U.S. STRATASYS company fuse deposition formation and the extruding jet technology based on wax material that the applicant has developed.
The basic principle of such technology is: utilize two to provide driving force by motor-driven friction pulley, the silk material is sent in the liquefier of shower nozzle fusing and the molten state material is extruded from the nozzle than minor diameter, form material and pile up the path, under computer control, realize fast shaping technology based on melt extruded stack shaping principle.
Function that will realize from shower nozzle and effect as can be known, shower nozzle should comprise mechanical structure and two elements of control system, it is based on an important subsystem of the rapid forming system of melt extrusion processes.Wherein mechanical structure comprises the wire feed driver part, and liquefier and jet element, the utility model only relate to the mechanical structure design of shower nozzle.
Existing a kind of nozzle structure and operation principle are described as follows in conjunction with Fig. 1, Fig. 2: this shower nozzle is integrated by wire feeder parts 11 and liquefier 12 and jet element 13, constitutes an integral body, as shown in Figure 1.Its main feature is that for a solution material 14 is being sent the destabilization problems of process to, existing structure is all taked to try one's best and shortened the distance of sending between motor and the liquefier, thereby reduces a material length of pressurized section, the anti-unstability ability of raising material; Every cover nozzle has only the melt outlet opening of a fixed size; Gap between two driving wheels is fixed.
The operation principle of this shower nozzle as shown in Figure 2, wherein functions such as wire feed, wire vent speeds match and start and stop control are all realized by driving unit of a motor, utilize the speed of wire feeding motor to regulate the control that realizes wire vent speed, utilize the start and stop of the start and stop realization wire vent of wire feeding motor simultaneously again.The major defect of this class shower nozzle is:
(1) two driving wheel utilizes gear drive to be synchronized with the movement by same motor, and spacing is certain, is a kind of rigid mechanical structure.The silk material driving mechanism of rigidity is very responsive to silk material diameter variation;
(2) driving force that can provide is limited, needed large driving force in the time of can not providing high polymer material to be shaped, and can not regulate easily;
(3) because motor and liquefier are connected as a single entity, it is bulky that nozzle structure seems.
(4) high viscosity during high polymer material fusion such as ABS causes start and stop inertia bigger, depends merely on the requirement that can not satisfy wire vent start and stop response real-time to the control of wire feeding motor.
Shower nozzle is a critical component of realizing the melt extruded stack shaping, be prerequisite and the core that realizes piling up moulding, whether nozzle structure design and control method be reasonable, can be directly connected to forming process carry out smoothly, and influence the quality of profiled member, so sprinkler design is the important component part of melt extruded rapid forming system design.
High polymer material is widely used in all trades and professions because of its good performance, and exploitation is key and the prerequisite that realizes that high polymer is shaped based on the nozzle system of high polymer material.There are very big-difference in high polymer material and wax material on performance, a great difference is also arranged on formability and forming requirements, has bigger viscosity than wax melt when mainly being the high polymer material fusion, mobile poor, need bigger motive force, and motional inertia is bigger, therefore the more difficult realization of start and stop in real time.
The purpose of this utility model is for overcoming the weak point of prior art.Design a kind of novel extruding jet, make it can provide enough big driving force to be used for wire feed; Can greatly improve the anti-unstability ability of a material, simplify the control requirement, also establish technical foundation simultaneously for improving forming quality and forming speed.
The extruding jet structure of a kind of rapid forming system of the utility model design, comprise wire feeder parts, liquefier and the jet element formed by driving mechanism and two friction pulleys, it is characterized in that, said jet element is provided with injection valve, is connected with wire convey soft pipe between said wire feeder parts and the liquefier; Said jet element also is provided with voltage stabilizing overflow valve and overflow ducts, and this voltage stabilizing overflow valve and said injection valve are merged into same rotary valve structure; Said jet element is provided with thick, thin two jets and an overfall, and is connected with a plate valve door.
The utility model extruding jet structure mainly has following superior effect:
(1) can provide enough big driving force, satisfy the driving needs that exist when high polymer is shaped than big flow resistance, and can in time adjust according to arts demand.
(2) because ABS silk material intensity is very high, add the effect of wire-feeding pipe, make phenomenons such as disconnected, the curved and unstability of a material can not take place in transmitting the wire feeding force process, and can transmit enough big driving force.Like this, wire feeder and scanning moving mechanism can be disconnected from each other, move no longer together, reduced the volume and the motional inertia of shower nozzle motion parts.
(3) to guarantee that shower nozzle flow channel melt pressure remains constant for overflow valve and overflow ducts, reduces the influence of the changeover portion of material bath movement to forming process, makes forming quality more stable.Valve switch is a kind of digitlization wire vent control mode, makes start and stop response speed and motor speed irrelevant, determine by the response time of valve fully, and be a fixed value substantially, can realize the real-time start and stop response of wire vent by control more easily.
(4) switchable type twin-jet nozzle structure realizes that easily different wire vent flows and different materials pile up the automatic switchover between path width, for improving forming quality simultaneously and forming speed has been established technical foundation.
Brief Description Of Drawings
Fig. 1 is existing nozzle structure schematic diagram.
Fig. 2 is the operation principle schematic diagram of existing shower nozzle.
Fig. 3 is an example structure schematic diagram of the present utility model.
Fig. 4 is a kind of nozzle arrangements schematic diagram of present embodiment.
Fig. 5 is the another kind of nozzle arrangements schematic diagram of present embodiment.
The utility model is designed a kind of embodiment of extruding jet structure of rapid forming system such as Fig. 3～shown in Figure 5, is described in detail as follows in conjunction with each figure:
Present embodiment comprises wire feeder parts 21, wire convey soft pipe 23, liquefier 24 and jet element 25, as shown in Figure 3.Its primary structure characteristics are:
Adopt long-range wire feed, wire feeder 21 is separated with liquefier 24 parts, two parts are linked to each other with wire convey soft pipe 23.ABS silk material 22 moves in wire convey soft pipe, enters the liquefier 24 from wire feeder.Wire-feeding pipe employing inner wall smooth, the flexible pipe that coefficient of friction is little can reduce the frictional resistance to the motion of silk material.The wire-feeding pipe two ends are separately fixed at a material and send drives structure outlet 215 and liquefier inlet 241 to, and interlude can be crooked arbitrarily in the space.Wire-feeding pipe plays the lateral-supporting effect to the silk material, and silk material deformation instability is carried out limitation and restriction, can greatly improve the anti-unstability ability of a material.
Increase voltage stabilizing overflow valve 251 and overflow ducts 252.When normal forming process need be sprayed thread, injection valve was opened, and overflow valve cuts out, and melt is extruded from the injection valve outlet, forms material path and forms.When wire vent need rest in short-term, injection valve cut out, and overflow valve 251 is opened, and wire feeder continues speed stabilizing and carries out wire feed, and melt then flows out from overflow ducts 252, and its resistance is identical with nozzle, thereby guaranteed that the interior melt pressure of shower nozzle is constant.Like this, the non-linear transient process of wire vent in the former design is postponed control problem change linear constant delay control problem into, simplified the control requirement greatly, improve wire vent control quality.
Present embodiment can adopt the single injector structure, and valve mechanism as shown in Figure 4.Injection valve and overflow valve are merged into same rotary valve structure 251, utilize the position of two different angles of rotary valve to realize spraying and two kinds of flow process of overflow
Present embodiment also can adopt the switchable structure of twin-jet nozzle, as shown in Figure 5.This structure contains 253,254 and overfalls of large and small two jets, realizes automaticallying switch through the switching motion of board-like valve 255, reaches that giant sprays and small nozzle two kinds of wire vent functions of injection and the relief function when stopping thread.Spray with the raising forming quality at local small nozzles that adopts such as the profiles that needs Accurate Shaping, and carrying out adopting giant to spray when the part aspect is inner fills, can greatly improve forming speed.Like this, for the contradiction between forming speed that often runs in the fast shaping technology and the forming quality, can be solved preferably.
Utilize this novel extruding jet system, successfully in fast forming machine, use, reach design effect preferably, and produce high-quality prototype.
Claims (3)
1. the extruding jet structure of a rapid forming system, comprise wire feeder parts, liquefier and the jet element formed by driving mechanism and two friction pulleys, it is characterized in that said jet element is provided with injection valve, be connected with wire convey soft pipe between said wire feeder parts and the liquefier.
2. extruding jet structure as claimed in claim 1 is characterized in that said jet element also is provided with voltage stabilizing overflow valve and overflow ducts, and this voltage stabilizing overflow valve and said injection valve are merged into same rotary valve structure.
3. extruding jet structure as claimed in claim 1 is characterized in that, said jet element is provided with thick, thin two jets and an overfall, and is connected with a plate valve door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98219118 CN2353768Y (en) | 1998-10-05 | 1998-10-05 | Extrusion spray-nozzle structure of quick-acting forming system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98219118 CN2353768Y (en) | 1998-10-05 | 1998-10-05 | Extrusion spray-nozzle structure of quick-acting forming system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2353768Y true CN2353768Y (en) | 1999-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98219118 Expired - Lifetime CN2353768Y (en) | 1998-10-05 | 1998-10-05 | Extrusion spray-nozzle structure of quick-acting forming system |
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| Country | Link |
|---|---|
| CN (1) | CN2353768Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182781A (en) * | 2011-12-29 | 2013-07-03 | 上海富奇凡机电科技有限公司 | Single-nozzle melt-extrusion-type three-dimensional printer |
| CN103341975A (en) * | 2013-06-28 | 2013-10-09 | 济南集罗电子有限公司 | 3D (3-dimensional) printing pen |
| CN103341961A (en) * | 2013-06-17 | 2013-10-09 | 耿得力 | Novel hot-melting material extrusion device |
| CN104002480A (en) * | 2013-02-25 | 2014-08-27 | 江苏永年激光成形技术有限公司 | Multiple extrusion ejection device |
| WO2015120596A1 (en) * | 2014-02-13 | 2015-08-20 | Empire Technology Development Llc | Methods and apparatuses for additive manufacturing |
| CN110430942A (en) * | 2017-03-21 | 2019-11-08 | 克劳斯马菲技术有限公司 | Method for the nozzle unit of reaction equation injection molding machine and for manufacturing plastic part |
-
1998
- 1998-10-05 CN CN 98219118 patent/CN2353768Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182781A (en) * | 2011-12-29 | 2013-07-03 | 上海富奇凡机电科技有限公司 | Single-nozzle melt-extrusion-type three-dimensional printer |
| CN103182781B (en) * | 2011-12-29 | 2016-01-13 | 上海富奇凡机电科技有限公司 | Single-nozzle melt-extrusion-type three-dimensional printer |
| CN104002480A (en) * | 2013-02-25 | 2014-08-27 | 江苏永年激光成形技术有限公司 | Multiple extrusion ejection device |
| CN103341961A (en) * | 2013-06-17 | 2013-10-09 | 耿得力 | Novel hot-melting material extrusion device |
| CN103341961B (en) * | 2013-06-17 | 2016-07-06 | 耿得力 | A kind of hot melt material extrusion device |
| CN103341975A (en) * | 2013-06-28 | 2013-10-09 | 济南集罗电子有限公司 | 3D (3-dimensional) printing pen |
| CN103341975B (en) * | 2013-06-28 | 2015-03-18 | 济南集罗电子有限公司 | 3D (3-dimensional) printing pen |
| WO2015120596A1 (en) * | 2014-02-13 | 2015-08-20 | Empire Technology Development Llc | Methods and apparatuses for additive manufacturing |
| US10384402B2 (en) | 2014-02-13 | 2019-08-20 | Empire Technology Development Llc | Methods and apparatuses for additive manufacturing |
| CN110430942A (en) * | 2017-03-21 | 2019-11-08 | 克劳斯马菲技术有限公司 | Method for the nozzle unit of reaction equation injection molding machine and for manufacturing plastic part |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |