CN103722703A - Plastic microinjection structure additionally with longitudinal-torsional ultrasonic vibration - Google Patents
Plastic microinjection structure additionally with longitudinal-torsional ultrasonic vibration Download PDFInfo
- Publication number
- CN103722703A CN103722703A CN201310749744.9A CN201310749744A CN103722703A CN 103722703 A CN103722703 A CN 103722703A CN 201310749744 A CN201310749744 A CN 201310749744A CN 103722703 A CN103722703 A CN 103722703A
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- Prior art keywords
- microinjection
- injection
- ultrasonic vibration
- plastic
- piezoelectric ceramic
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
Abstract
The invention discloses a plastic microinjection structure additionally with longitudinal-torsional ultrasonic vibration. The plastic microinjection structure comprises a housing and an injection sleeve connected with the housing, wherein an injection nozzle is formed in one end part of the injection sleeve; a piezoelectric ceramic piece for energy conversion is arranged in the housing; an injection screw rod is arranged in the injection sleeve and is fixedly connected with the piezoelectric ceramic piece in the housing; the piezoelectric ceramic piece is electrified to enable the injection screw rod to generate the high-frequency longitudinal-torsional ultrasonic vibration. According to the plastic microinjection structure provided by the invention, an axial reciprocating vibration part is decomposed into circumferential high-frequency torsion by virtue of a injection screw rod structure, so that a plastic raw material is further sheared and thinned, the injection operation is smoothly and uniformly performed under the conditions of relatively low pressure and temperature, and the influence of pores and warpage of a plastic product on the precision of the product and the working efficiency of a machine is avoided.
Description
Technical field
The present invention relates to tight manufacturing technology field, particularly relate to a kind of plastics microinjection structure of additional longitrorse ultrasonic vibration.
Background technology
Along with the fast development of new and high technology and microtechnic, in the fields such as optical communication, computer data storage, medical treatment and biotechnology, micro-optical device, electronics and consumer product, plastics micro injection molding goods present the demand of rapid growth.Plastics micro injection molding for the production of overall dimension or feature functionality district dimensional requirement with the millimeter goods of micron metering even.Because the various advantages of injection technique and polymeric material are compared with the resistance to oxidation of other material, corrosion-resistant, easy-formation, advantage that specific strength is high, making take macromolecular material is that main plastics micro injection molding technology is a dark horse, and becomes the Main Branches of microsystems technology.
When adopting traditional injection technique to inject precise and tiny goods, because plastic macromolecular material melt viscosity is high, even if be also difficult to the smooth-going mold cavity of filling with under high pressure, plastic easily forms pore, elastic turbulence and melt fracture produce residual stress and easily cause product surface warpage, cannot reach higher required precision.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of plastics microinjection structure of additional longitrorse ultrasonic vibration, and it is reasonable in design, simple in structure, has improved poor, the inefficient problem of injection precision.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is to provide a kind of plastics microinjection structure of additional longitrorse ultrasonic vibration, and it comprises: shell and coupled shot sleeve; The end of described shot sleeve is injection nozzle, is also provided with the piezoelectric ceramic piece of switching energy in described shell; In described shot sleeve, be provided with injection screw, injection screw is also fixedly connected with the piezoelectric ceramic piece in shell, makes injection screw produce the ultrasonic vibration of high frequency longitrorse after piezoelectric ceramic piece energising.
Preferably, be also provided with the balancing weight that regulates injection screw motion in described shell, described balancing weight and piezoelectric ceramic piece are connected.
Preferably, described injection screw is provided with the helicla flute of unsymmetric structure.
Preferably, the junction of described injection screw and piezoelectric ceramic piece is processed as cone structure.
The invention has the beneficial effects as follows: the plastics microinjection structure that a kind of additional longitrorse ultrasonic vibration is provided, mainly to utilize on injection screw to produce longitudinally and the compound ultrasonic vibration of torsion, make injection injection screw rod when rotation is advanced, occur longitudinally and the double vibrations of the high frequency reversing.This longitrorse ultrasonic vibration makes the further shear thinning of plastic macromolecular material melt, thereby realize the smooth-going mold cavity of filling with equably under lower pressure and temperature, avoid producing pore and warpage, improve injection precision and the efficiency of product, reach simultaneously and reduce the cost-saving requirement of energy consumption, meet the direction of green manufacture technology.
Accompanying drawing explanation
Fig. 1 is the structural representation of the plastics microinjection structure of a kind of additional longitrorse ultrasonic vibration of the present invention;
In accompanying drawing, the mark of each parts is as follows: 1, shell; 2, shot sleeve; 3, injection nozzle; 4, piezoelectric ceramic piece; 5, injection screw; 6, balancing weight; 7, the helicla flute of unsymmetric structure; 8, cone structure; 9, charging aperture.
The specific embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Refer to accompanying drawing 1, the embodiment of the present invention comprises:
A plastics microinjection structure for additional longitrorse ultrasonic vibration, as Fig. 1, it comprises shot sleeve 2, shell 1; The end of shot sleeve 2 is injection nozzle 3; On the sidewall of shot sleeve 2, be also provided with for filling the charging aperture 9 of raw material.Shot sleeve 2 is connected with shell 1, in the inner chamber of shot sleeve 2, be provided with an injection screw 5, injection screw 5 Surface Machining have the helicla flute 7 of unsymmetric structure, injection screw 5 one end are also connected with the piezoelectric ceramic piece 4 in shell 1, and injection screw 5 is processed as cone structure 8 with the junction of piezoelectric ceramic piece 4.In shell 1, be also provided with a balancing weight 6, it is fixing by securing member and piezoelectric ceramic piece 4, in order to regulate injection screw 5.
The operation principle of this structure is: while being connected with high-frequency alternating electricity on piezoelectric ceramic piece 4, electric energy is converted to mechanical energy, thereby makes injection screw 5 produce single order double vibrations longitudinally, and amplitude can be up to more than 20KHz.The helicla flute 7 that is subject to the unsymmetric structure on injection screw 5 surfaces when extensional vibration ripple when along injection screw 5 transfers affects, a part fires back from central shaft reaches free interface, and another part circumferentially can produce along circumferential alternate stress, produce torsional wave, injection screw 5 has just produced the longitrorse ultrasonic vibration of high frequency like this.
While starting working, powdery or granular plastic raw materials are joined to charging aperture 9, injection screw 5 rotations are stirred plastic raw materials are entered in shot sleeve 2.Piezoelectric ceramic piece 4 energisings make injection screw 5 vibrations, the longitrorse ultrasonic vibration that produces high frequency.Injection screw 5 just can be shifted the plastic raw materials in shot sleeve 2 onto shot sleeve 2 front ends like this, under the firing equipment effect of adhering to outward at shot sleeve 2 front ends, plastic raw materials melting in shot sleeve 2, becomes viscous liquid, finally by crossing injection nozzle 3, is injected in closed mold cavity.
The plastics microinjection structure of this additional longitrorse ultrasonic vibration, utilizing injection screw structure is that circumferential high frequency reverses by axial double vibrations decomposed, thereby make the further shear thinning of plastic raw materials, realization is smooth-going injection equably under lower pressure and temperature, avoids moulding product generation pore and warpage can affect the precision of product and the operating efficiency of machine.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. a plastics microinjection structure for additional longitrorse ultrasonic vibration, it comprises: shell (1) and coupled shot sleeve (2); The end of described shot sleeve (2) is injection nozzle (3), is also provided with the piezoelectric ceramic piece (4) of switching energy in described shell (1); It is characterized in that: in described shot sleeve (2), be provided with injection screw (5), injection screw (5) is also fixedly connected with the piezoelectric ceramic piece (4) in shell (1), makes injection screw (5) produce the ultrasonic vibration of high frequency longitrorse after piezoelectric ceramic piece (4) energising.
2. the plastics microinjection structure of a kind of additional longitrorse ultrasonic vibration according to claim 1, it is characterized in that: in described shell (1), be also provided with the balancing weight (6) of adjustable injection screw (5) motion, described balancing weight (6) is connected with piezoelectric ceramic piece (4).
3. the plastics microinjection structure of a kind of additional longitrorse ultrasonic vibration according to claim 2, is characterized in that: described injection screw (5) is provided with the helicla flute (7) of unsymmetric structure.
4. according to the plastics microinjection structure of a kind of additional longitrorse ultrasonic vibration described in any one in claims 1 to 3, it is characterized in that: described injection screw (5) is processed as cone structure (8) with the junction of piezoelectric ceramic piece (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310749744.9A CN103722703B (en) | 2013-12-31 | 2013-12-31 | A kind of Plastic microinjection structure of additional longitrorse ultrasonic vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310749744.9A CN103722703B (en) | 2013-12-31 | 2013-12-31 | A kind of Plastic microinjection structure of additional longitrorse ultrasonic vibration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103722703A true CN103722703A (en) | 2014-04-16 |
| CN103722703B CN103722703B (en) | 2016-04-20 |
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| CN201310749744.9A Active CN103722703B (en) | 2013-12-31 | 2013-12-31 | A kind of Plastic microinjection structure of additional longitrorse ultrasonic vibration |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191573A (en) * | 2014-08-25 | 2014-12-10 | 华南理工大学 | Device and method for ultrasonic plasticization and microinjection of polymers |
| CN105666545A (en) * | 2016-04-15 | 2016-06-15 | 苏州科技学院 | High-frequency longitudinal-torsional composite vibratory sponge bar taking worktable and application |
| CN105666547A (en) * | 2016-04-15 | 2016-06-15 | 苏州科技学院 | High-frequency longitudinal-torsional composite vibratory sponge gang-drill drilling worktable and application |
| CN105729521A (en) * | 2016-04-15 | 2016-07-06 | 苏州科技学院 | High-frequency vibration sponge strip taking workbench and application |
| CN106273509A (en) * | 2016-10-06 | 2017-01-04 | 顺德职业技术学院 | The material squash type 3D printer of vibration moulding |
| CN106363903A (en) * | 2016-10-06 | 2017-02-01 | 顺德职业技术学院 | Three-dimensional printing device with injector head capable of being vibrated |
| CN106671371A (en) * | 2016-12-22 | 2017-05-17 | 苏州市职业大学 | Plunger type precise injection device |
| CN111826516A (en) * | 2020-07-23 | 2020-10-27 | 北京理工大学 | Residual stress reduction and homogenization device of metal frame |
| CN115972533A (en) * | 2022-12-19 | 2023-04-18 | 四川大学 | Polymer melt composite vibration extrusion molding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166813A (en) * | 2011-01-25 | 2011-08-31 | 天津大学 | Ultrasonic auxiliary micro injection forming die |
| CN102310517A (en) * | 2011-07-08 | 2012-01-11 | 常州工学院 | Piezoelectric dynamic plasticizing forming device and injection molding method thereof |
| CN203888158U (en) * | 2013-12-31 | 2014-10-22 | 苏州市职业大学 | Plastic microinjection structure with added longitudinal-torsional ultrasonic vibration |
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2013
- 2013-12-31 CN CN201310749744.9A patent/CN103722703B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166813A (en) * | 2011-01-25 | 2011-08-31 | 天津大学 | Ultrasonic auxiliary micro injection forming die |
| CN102310517A (en) * | 2011-07-08 | 2012-01-11 | 常州工学院 | Piezoelectric dynamic plasticizing forming device and injection molding method thereof |
| CN203888158U (en) * | 2013-12-31 | 2014-10-22 | 苏州市职业大学 | Plastic microinjection structure with added longitudinal-torsional ultrasonic vibration |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191573A (en) * | 2014-08-25 | 2014-12-10 | 华南理工大学 | Device and method for ultrasonic plasticization and microinjection of polymers |
| CN105666545A (en) * | 2016-04-15 | 2016-06-15 | 苏州科技学院 | High-frequency longitudinal-torsional composite vibratory sponge bar taking worktable and application |
| CN105666547A (en) * | 2016-04-15 | 2016-06-15 | 苏州科技学院 | High-frequency longitudinal-torsional composite vibratory sponge gang-drill drilling worktable and application |
| CN105729521A (en) * | 2016-04-15 | 2016-07-06 | 苏州科技学院 | High-frequency vibration sponge strip taking workbench and application |
| CN106273509A (en) * | 2016-10-06 | 2017-01-04 | 顺德职业技术学院 | The material squash type 3D printer of vibration moulding |
| CN106363903A (en) * | 2016-10-06 | 2017-02-01 | 顺德职业技术学院 | Three-dimensional printing device with injector head capable of being vibrated |
| CN106363903B (en) * | 2016-10-06 | 2018-09-25 | 顺德职业技术学院 | The vibratile three D printing equipments of injector head |
| CN106671371A (en) * | 2016-12-22 | 2017-05-17 | 苏州市职业大学 | Plunger type precise injection device |
| CN111826516A (en) * | 2020-07-23 | 2020-10-27 | 北京理工大学 | Residual stress reduction and homogenization device of metal frame |
| CN111826516B (en) * | 2020-07-23 | 2021-07-30 | 北京理工大学 | Residual stress reduction and homogenization device of metal frame |
| CN115972533A (en) * | 2022-12-19 | 2023-04-18 | 四川大学 | Polymer melt composite vibration extrusion molding device |
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| Publication number | Publication date |
|---|---|
| CN103722703B (en) | 2016-04-20 |
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Effective date of registration: 20190510 Address after: 215216 Tongxing Village, Tongli Town, Wujiang Economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee after: Suzhou Chuangjuxin Electronic Technology Co., Ltd. Address before: 215104 Suzhou Vocational University, 106 Wuzhong District International Education Park, Suzhou, Jiangsu. Patentee before: Suzhou vocational University |
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