CN204249278U - A kind of injection machine injection screw structure - Google Patents
A kind of injection machine injection screw structure Download PDFInfo
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- CN204249278U CN204249278U CN201420637427.8U CN201420637427U CN204249278U CN 204249278 U CN204249278 U CN 204249278U CN 201420637427 U CN201420637427 U CN 201420637427U CN 204249278 U CN204249278 U CN 204249278U
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Abstract
The utility model discloses a kind of injection machine injection screw structure, comprise the screw body, the mixing section that are made up of pan feeding section, compression section and homogenizing zone and connect as one by crossing glue meson, crossing cushion rubber and crossing glue head the tapered squeezing section formed, tapered squeezing section can improve injection precision and injection efficiency; Be coated with ceramic coating on screw body surface, coating surface is smooth full, can accelerate the propelling of UPVC melt; Screw channel on screw body from pan feeding section to homogenizing zone successively from depth to shallow, make screw body obtain a suitable compression ratio, the propelling of UPVC in screw channel of melting can be accelerated; Bottom the screw channel of pan feeding section, compression section and homogenizing zone, arrange some studs, when screw rod rotates, stud can promote UPVC melt and advance, and accelerates the propelling of melt; Arrange multiple pin on mixing section surface, pin can be torn and disorientation material, makes every character of material consistent, reduces crystallization.
Description
Technical field
The utility model relates to injection machine field, particularly a kind of injection machine injection screw structure being applied to the injection moulding of UPVC raw material.
Background technology
The material melts of injection machine is realized by rubber melting cylinder assembly, is fed forward by material by being arranged on rubber melting cylinder assembly inner screw, and recycling electro-heat equipment is by material melts.And UPVC material is that a kind of melt viscosity is high, the raw material of poor fluidity.Even if improve injection pressure and melt temperature, the change of its mobility is also little, and the forming temperature of UPVC and heat decomposition temperature are closely in addition, and it is narrow to carry out shaping temperature range, is a kind ofly to be difficult to shaping temperature.With the injection machine of regular injection screw rod by UPVC injection moulding article of manufacture time, the temperature control that there will be higher degree is abnormal, and due to sizing material cannot in time from rubber melting cylinder extruding completely, cause product surface gloss bad, turn to be yellow, stain etc. are seriously bad.
Utility model content
Main purpose of the present utility model overcomes above-mentioned defect, provides one can efficiently rapidly by UPVC raw material mixed melting, and can than more completely by the UPVC efficient compounding precise injection screw rod structure out of the material extruding in injection screw.
For solving the problem, the technical scheme that the utility model adopts is:
A kind of injection machine injection screw structure, comprise screw body, be connected to the glue meson excessively of described screw body head in turn, cross cushion rubber and cross glue head, described screw body surface is provided with feeding screw thread, described screw body comprises pan feeding section, compression section and homogenizing zone from end successively to cephalad direction, describedly crosses glue meson, describedly crosses cushion rubber and described glue head of crossing is connected to form one structure: tapered squeezing section; The ceramic coating sintered by ceramic material and alloyed powder is coated with on described screw body surface, spiral groove depth in described pan feeding section is greater than the spiral groove depth on described compression section, spiral groove depth on described compression section is greater than the spiral groove depth on described homogenizing zone, spiral groove depth on described compression section diminishes gradually along material moving direction, spiral groove depth on described pan feeding section and described homogenizing zone fixedly remains unchanged, bottom the screw channel of described pan feeding section, compression section and homogenizing zone, be provided with some studs; Described injection screw structure also comprises the mixing section being connected to described homogenizing zone front end, described mixing section is arranged between described homogenizing zone and described tapered squeezing section, the surface distributed of described mixing section has some spaced pins, described pin is that some circles are arranged in the radial direction of described screw body around the axis of described screw body, and described pin is in the axially helically bar arrangement of described screw body.
Preferably, described pin is prismatic body, cuboid or prismatoid.
Preferably, described stud is coniform, round table-like, pyramid-shaped or prism-frustum-shaped.
Preferably, the thickness of described ceramic coating is 1mm ~ 2mm.
The beneficial effect of injection machine injection screw structure of the present utility model is:
By the screw channel on screw body is set to from pan feeding section to homogenizing zone successively from depth to shallow, and the spiral groove depth on compression section diminishes gradually along material moving direction, make screw body obtain a suitable compression ratio, thus make the UPVC of melting accelerate to advance in screw channel.
By in screw body surface coated ceramic coating, coating surface is smooth full, can accelerate the propelling of UPVC melt; And, ceramic coating has corrosion resistance and mar proof, can improve hardness and the heat-resisting quantity of screw body entirety, and screw rod is had, and corrosion resistance is strong, mar proof is high, resistant to elevated temperatures feature, thus make injection screw can keep normal work, improve efficiency and the qualification rate of plasthetics.
By arranging some studs bottom the screw channel of pan feeding section, compression section and homogenizing zone, when screw rod rotates, stud can promote UPVC melt and advance, and accelerates the propelling of melt.
By arranging multiple pin on mixing section surface, and pin is in the axially helically bar arrangement of screw body, when material enters mixing section, pin can be torn and disorientation material, material is made to carry out repeated segmentation, shunting and the dispersiveness of mixing, the homogenizing increased material and compound, make every character of material consistent, reduce crystallization; Solid material can also be smashed by pin, destroy melt, upset the two-phase flow of solid and liquid, and stream is separated repeatedly, change the direction of stream between barrel and screw rod and VELOCITY DISTRIBUTION, solid phase and liquid phase are fully mixed, increase the heat transfer area between solid phase and liquid phase, and certain resistance and fricting shearing are produced to material, make solid phase fusion.
By by crossing glue meson, cross cushion rubber and cross glue head and to be connected to form one the tapered squeezing section of structure, injection precision and injection efficiency can be improved, by the raw material after screw rod, under the pushing of screw rod, the disposable injection of raw material, decrease the time stopped in screw rod, make it meet the injection requirement of UPVC, injection amount can reach 95%.
Accompanying drawing explanation
Fig. 1 is the structural representation of the injection screw structure of an embodiment of injection machine injection screw structure of the present utility model.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
With reference to Fig. 1, one embodiment of injection machine injection screw structure of the present utility model is proposed, this injection machine injection screw structure comprises screw body 10, is connected to the glue meson excessively of screw body 10 head in turn, crosses cushion rubber and cross glue head, is provided with feeding screw thread on screw body 10 surface.Screw body 10 comprises pan feeding section 11, compression section 12 and homogenizing zone 13 successively from end to cephalad direction, pan feeding section 11 for responsible preheating and plastic solidification conveying and push; Compression section 12 for by plastic raw materials melting, mixing, shear compression and pressure exhaust, plastics can melt in this section, and volume can reduce, thus the design of the compression ratio of this section is very important; Homogenizing zone 13 is for melt is mixing, conveying, metering.
Be coated with the ceramic coating 14 sintered by ceramic material and alloyed powder on screw body 10 surface, the thickness of ceramic coating 14 is 1mm ~ 2mm.By in the surperficial coated ceramic coating 14 of screw body 10, coating surface is smooth full, can accelerate the propelling of UPVC melt; And, ceramic coating 14 has corrosion resistance and mar proof, and can improve hardness and the heat-resisting quantity of screw body 10 entirety, screw rod is had, and corrosion resistance is strong, mar proof is high, resistant to elevated temperatures feature, thus make injection screw can keep normal work, improve efficiency and the qualification rate of plasthetics.
Screw channel on screw body 10 is set to from pan feeding section 11 to homogenizing zone 13 successively from depth to shallow, spiral groove depth in pan feeding section 11 is greater than the spiral groove depth on compression section 12, spiral groove depth on compression section 12 is greater than the spiral groove depth on homogenizing zone 13, and the spiral groove depth on compression section 12 diminishes gradually along material moving direction, the spiral groove depth on pan feeding section 11 and homogenizing zone 13 fixedly remains unchanged.By being set to by the screw channel on screw body 10 from pan feeding section 11 to homogenizing zone 13 successively from depth to shallow, screw body 10 can be made to obtain a suitable compression ratio, thus make the UPVC of melting accelerate to advance in screw channel.
Bottom the screw channel of pan feeding section 11, compression section 12 and homogenizing zone 13, be provided with some studs 15, this stud 15 in coniform, round table-like, pyramid-shaped or prism-frustum-shaped arrange, when screw rod rotates, stud 15 can promote UPVC melt and advance, the propelling of quickening melt.
Injection screw structure also comprises the mixing section 20 being connected to homogenizing zone 13 front end, mixing section 20 is arranged between homogenizing zone 13 and tapered squeezing section 30, the surface distributed of mixing section 20 has some spaced pins 21, pin 21 is that some circles are arranged in the radial direction of screw body 10 around the axis of screw body 10, and pin 21 is in the axially helically bar arrangement of screw body 10.This pin 21 is arranged in prismatic body, cuboid or prismatoid.By arranging multiple pin 21 on mixing section 20 surface, and pin 21 is in the axially helically bar arrangement of screw body 10, when material enters mixing section 20, pin 21 can be torn and disorientation material, material is made to carry out repeated segmentation, shunting and the dispersiveness of mixing, the homogenizing increased material and compound, make every character of material consistent, reduce crystallization; Solid material can also be smashed by pin 21, destroy melt, upset the two-phase flow of solid and liquid, and stream is separated repeatedly, change the direction of stream between barrel and screw rod and VELOCITY DISTRIBUTION, solid phase and liquid phase are fully mixed, increase the heat transfer area between solid phase and liquid phase, and certain resistance and fricting shearing are produced to material, make solid phase fusion.
This crosses glue meson, cross cushion rubber and cross glue head is connected to form one the tapered squeezing section 30 of structure, can improve injection precision and injection efficiency.By the raw material after screw rod, under the pushing of screw rod, the disposable injection of raw material, decreases the time stopped in screw rod, and make it meet the injection requirement of UPVC, injection amount can reach 95%.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure transformation utilizing the utility model description and accompanying drawing content 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 utility model.
Claims (4)
1. an injection machine injection screw structure, comprise screw body, be connected to the glue meson excessively of described screw body head in turn, cross cushion rubber and cross glue head, described screw body surface is provided with feeding screw thread, described screw body comprises pan feeding section, compression section and homogenizing zone from end successively to cephalad direction, it is characterized in that, describedly cross glue meson, describedly cross cushion rubber and described glue head of crossing is connected to form one structure: tapered squeezing section; The ceramic coating sintered by ceramic material and alloyed powder is coated with on described screw body surface, spiral groove depth in described pan feeding section is greater than the spiral groove depth on described compression section, spiral groove depth on described compression section is greater than the spiral groove depth on described homogenizing zone, spiral groove depth on described compression section diminishes gradually along material moving direction, spiral groove depth on described pan feeding section and described homogenizing zone fixedly remains unchanged, bottom the screw channel of described pan feeding section, compression section and homogenizing zone, be provided with some studs; Described injection screw structure also comprises the mixing section being connected to described homogenizing zone front end, described mixing section is arranged between described homogenizing zone and described tapered squeezing section, the surface distributed of described mixing section has some spaced pins, described pin is that some circles are arranged in the radial direction of described screw body around the axis of described screw body, and described pin is in the axially helically bar arrangement of described screw body.
2. injection machine injection screw structure according to claim 1, is characterized in that, described pin is prismatic body, cuboid or prismatoid.
3. injection machine injection screw structure according to claim 1 and 2, is characterized in that, described stud is coniform, round table-like, pyramid-shaped or prism-frustum-shaped.
4. injection machine injection screw structure according to claim 1, is characterized in that, the thickness of described ceramic coating is 1mm ~ 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420637427.8U CN204249278U (en) | 2014-10-30 | 2014-10-30 | A kind of injection machine injection screw structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420637427.8U CN204249278U (en) | 2014-10-30 | 2014-10-30 | A kind of injection machine injection screw structure |
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| Publication Number | Publication Date |
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| CN204249278U true CN204249278U (en) | 2015-04-08 |
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| CN201420637427.8U Active CN204249278U (en) | 2014-10-30 | 2014-10-30 | A kind of injection machine injection screw structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328868A (en) * | 2015-11-13 | 2016-02-17 | 积康螺杆制造（上海）股份有限公司 | Screw-type vortex mixing nozzle |
| CN106448920A (en) * | 2016-08-31 | 2017-02-22 | 惠州市亚创域科技有限公司 | Material extrusion threaded rod for conveying high temperature PA material of three layers of insulating wires |
| CN110103431A (en) * | 2019-05-31 | 2019-08-09 | 广东伊之密精密注压科技有限公司 | A kind of plastic-injection moulding machine and its injection screw |
-
2014
- 2014-10-30 CN CN201420637427.8U patent/CN204249278U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328868A (en) * | 2015-11-13 | 2016-02-17 | 积康螺杆制造（上海）股份有限公司 | Screw-type vortex mixing nozzle |
| CN106448920A (en) * | 2016-08-31 | 2017-02-22 | 惠州市亚创域科技有限公司 | Material extrusion threaded rod for conveying high temperature PA material of three layers of insulating wires |
| CN110103431A (en) * | 2019-05-31 | 2019-08-09 | 广东伊之密精密注压科技有限公司 | A kind of plastic-injection moulding machine and its injection screw |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 528415 No. 110, Zhaoyi Road, Xiaolan Town, Zhongshan City, Guangdong Province Patentee after: Guangdong Lijin Plastic Machinery Intelligent Manufacturing Co.,Ltd. Address before: 528421 Guangfu Avenue, Dongsheng Town, Zhongshan City, Guangdong Province Patentee before: Zhongshan Lijin Machinery Co.,Ltd. |
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| CP03 | Change of name, title or address |