CN204054548U - Injection machine PC bolt special - Google Patents
Injection machine PC bolt special Download PDFInfo
- Publication number
- CN204054548U CN204054548U CN201420412009.9U CN201420412009U CN204054548U CN 204054548 U CN204054548 U CN 204054548U CN 201420412009 U CN201420412009 U CN 201420412009U CN 204054548 U CN204054548 U CN 204054548U
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- CN
- China
- Prior art keywords
- section
- length
- rod section
- injection machine
- spiro rod
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a kind of injection machine PC bolt special, relates to injection machine technical field.It comprises construction section and spiro rod section, and construction section to be arranged on actuating unit thus to drive spiro rod section to rotate in barrel; Spiro rod section comprises feeding section, compression section, homogenizing zone and polished rod section, and barrel is positioned at feeding section place and is provided with charging aperture, and material forming uniform molten plastic successively in barrel and inject in mould through nozzle from polished rod section after feeding section, compression section, homogenizing zone.The periphery of feeding section, compression section and homogenizing zone is provided with spiral shell rib, and the length of polished rod section is about 40% of spiro rod section length.The utility model can avoid PC plastics injection-molded item jaundice blackout.
Description
Technical field
The present invention relates to injection machine technical field, specifically, relate to a kind of injection machine PC bolt special.
Background technology
Injection machine has another name called injection (mo(u)lding) machine or injector, and it thermoplastic or thermosetting plastics is utilized mould for plastics to make the main former of the plastic products of various shape.Injection machine can heating of plastic, and applies high pressure to molten plastic, thus makes it penetrate and be full of mold cavity.Screw rod is the vitals of injection machine, and its effect is carried plastics, compacting, fusing, stirs and exert pressure.All these steps are all come by the rotation of screw rod in barrel, and when screw rod rotates, plastics are for machine tube inner wall, screw channel bottom surface, spiral shell rib pressure surface and all can produce friction and mutually move between plastics and plastics.Plastics pushing ahead in barrel is exactly the result of this movement combination, and fricative heat is also used for improving plastics temperature and molten plastic by absorption.The project organization of screw rod will directly have influence on the degree of these effects.
Existing injection machine, when processing PC plastics, is easy to the jaundice, the blackout that cause PC plastic products, find through pilot production repeatedly, this is because the structural design of existing screw in injection molding machine is unreasonable, and barrel temperature is crossed, and high reason causes.
Summary of the invention
Content of the present invention is to provide a kind of injection machine PC bolt special, and it can overcome certain or some defect of prior art.
According to injection machine PC bolt special of the present invention, it comprises construction section and spiro rod section, and construction section to be arranged on actuating unit thus to drive spiro rod section to rotate in barrel.Spiro rod section comprises feeding section, compression section, homogenizing zone and polished rod section, and barrel is positioned at feeding section place and is provided with charging aperture, and plastics forming uniform molten plastic successively after feeding section, compression section, homogenizing zone in barrel, and inject in mould from polished rod section through nozzle.The periphery of feeding section, compression section and homogenizing zone is provided with spiral shell rib, and the length of polished rod section is about 40% of spiro rod section length, and construction section can also be provided with keyway.
The present invention in use, plastics inject in mold cavity in polished rod section through nozzle, polished rod section does not establish spiral shell rib, stream of plastic is through polished rod Duan Shi, stagnation can not be produced because being subject to the stop of spiral shell rib, also because being subject to the too much friction of spiral shell rib, too much heat can not be produced, invention increases the problem that polished rod section just can avoid making because of shear heat the flavescence of PC plastic products, blackening completely.Reason is as follows: the first, and polished rod Duan Bushe spiral shell rib, can not produce shear heat; The second, although feeding section, compression section and homogenizing zone also can produce shear heat to material, the increase due to polished rod section makes the contraction in length of feeding section, compression section, homogenizing zone, and this will considerably reduce shear heat and the thermal history of generation.And because material is lower in the temperature of feeding section, compression section, homogenizing zone, suitable shear action is easy to the melting accelerating material on the contrary.Find through productive experiment repeatedly, the length of polished rod section of the present invention is about 40% of spiro rod section length and just can reaches optimum efficiency, when polished rod section length lower than spiro rod section length 40% more time, the corresponding shortening of length of feeding section, compression section, homogenizing zone is less, the side effect avoiding shear heat to bring that this can not be best; When the length of polished rod section be greater than spiro rod section length 40% more time, the corresponding shortening of length of feeding section, compression section, homogenizing zone is more, and this will make plastics can not obtain best melting effect in barrel, even affect discharging quality of the present invention.Be connected by key between construction section of the present invention with the output of actuating unit, adopt key to connect and not only can also bear axial load to a certain degree by transmitting torque efficiently.
As preferably, the Design of length of feeding section is 20% ~ 30% of spiro rod section length.
The length that the present invention designs feeding section is 20% ~ 30% of spiro rod section length, and this not only ensures that material has enough conveying spaces, also can not because of the length of feeding section and the melting causing material too early.
As preferably, the Design of length of compression section is 15% ~ 25% of spiro rod section length.
The Design of length of compression section of the present invention is 15% ~ 25% of spiro rod section length, and this design can contribute to the steady conveying of plastic melt in screw channel, turns to be yellow turn black to prevent PC plastics.。
As preferably, the Design of length of homogenizing zone is 15% ~ 25% of spiro rod section length.
The Design of length of homogenizing zone of the present invention is 15% ~ 25% of spiro rod section length, this Design of length ensure that plastics can all melting homogeneous temperature in this section, evenly mixing, the too short meeting of length of homogenizing zone makes melting effect poor, and the length of homogenizing zone is oversize, easily makes material Melt residence cross for a long time and produce thermal decomposition.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of injection machine PC bolt special in embodiment 1.
Detailed description of the invention
For understanding content of the present invention further, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
As shown in Figure 1, be a kind of injection machine PC bolt special of the present embodiment, it comprises construction section 110 and spiro rod section 120, and construction section 110 to be arranged on actuating unit thus to drive spiro rod section 120 to rotate in barrel; Spiro rod section 120 comprises feeding section 121, compression section 122, homogenizing zone 123 and polished rod section 124, barrel is positioned at feeding section 121 place and is provided with charging aperture, material forming uniform molten plastic successively after feeding section 121, compression section 122, homogenizing zone 123 in barrel, and injects in mould from polished rod section 124 through nozzle; The periphery of feeding section 121, compression section 122 and homogenizing zone 123 is provided with screw thread, and the length L4 of polished rod section 124 is 40% of spiro rod section 120 length L, and construction section 110 is provided with keyway.
The length L1 of feeding section 121 can be 20% ~ 30% of spiro rod section 120 length L, and in the present embodiment, the length L1 of feeding section 121 is 25% of spiro rod section 120 length L.
The length L2 of compression section 122 can be 15% ~ 25% of spiro rod section 120 length L, and in the present embodiment, the length L2 of compression section 122 is 15% of spiro rod section 120 length L.
The length L3 of homogenizing zone 123 can be 15% ~ 25% of spiro rod section 120 length L, and in the present embodiment, the length L3 of homogenizing zone 123 is 20% of spiro rod section 120 length L.
The screw rod groove depth H1 of feeding section 121 etc. are dark.
The screw rod groove depth H3 of homogenizing zone 123 etc. are dark.
The screw rod groove depth H2 of compression section 122 shoals gradually, and at the bottom of the screw rod of compression section 122, footpath D2 increases gradually.
Schematically above be described the present invention and embodiment thereof, this description does not have restricted, and also just one of the embodiments of the present invention shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.
Claims (7)
1. injection machine PC bolt special, is characterized in that: comprise construction section (110) and spiro rod section (120), and construction section (110) to be arranged on actuating unit thus to drive spiro rod section (120) to rotate in barrel; Spiro rod section (120) comprises feeding section (121), compression section (122), homogenizing zone (123) and polished rod section (124), barrel is positioned at feeding section (121) place and is provided with charging aperture, material forming uniform molten plastic through feeding section (121), compression section (122), homogenizing zone after (123) successively in barrel, and injects in mould from polished rod section (124) through nozzle; The periphery of feeding section (121), compression section (122) and homogenizing zone (123) is provided with spiral shell rib, and the length (L4) of polished rod section (124) is 40% of spiro rod section (120) length (L); Construction section (110) is provided with keyway.
2. injection machine PC bolt special according to claim 1, is characterized in that: the length (L1) of feeding section (121) is 20% ~ 30% of spiro rod section (120) length (L).
3. injection machine PC bolt special according to claim 1, is characterized in that: the length (L2) of compression section (122) is 15% ~ 25% of spiro rod section (120) length (L).
4. injection machine PC bolt special according to claim 1, is characterized in that: the length (L3) of homogenizing zone (123) is 15% ~ 25% of spiro rod section (120) length (L).
5. injection machine PC bolt special according to claim 1, is characterized in that: the screw rod groove depth (H1) of feeding section (121) etc. are dark.
6. injection machine PC bolt special according to claim 5, is characterized in that: the screw rod groove depth (H3) of homogenizing zone (123) etc. are dark.
7. injection machine PC bolt special according to claim 6, is characterized in that: the screw rod groove depth (H2) of compression section (122) shoals gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412009.9U CN204054548U (en) | 2014-07-24 | 2014-07-24 | Injection machine PC bolt special |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412009.9U CN204054548U (en) | 2014-07-24 | 2014-07-24 | Injection machine PC bolt special |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204054548U true CN204054548U (en) | 2014-12-31 |
Family
ID=52196129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420412009.9U Expired - Fee Related CN204054548U (en) | 2014-07-24 | 2014-07-24 | Injection machine PC bolt special |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204054548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129049A (en) * | 2014-07-24 | 2014-11-05 | 杭州捷立精密机械有限公司 | Special screw for injection machine used for processing PC plastics |
-
2014
- 2014-07-24 CN CN201420412009.9U patent/CN204054548U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129049A (en) * | 2014-07-24 | 2014-11-05 | 杭州捷立精密机械有限公司 | Special screw for injection machine used for processing PC plastics |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20160724 |