CN214395275U - Screw rod with good homogenization effect - Google Patents
Screw rod with good homogenization effect Download PDFInfo
- Publication number
- CN214395275U CN214395275U CN202023263219.0U CN202023263219U CN214395275U CN 214395275 U CN214395275 U CN 214395275U CN 202023263219 U CN202023263219 U CN 202023263219U CN 214395275 U CN214395275 U CN 214395275U
- Authority
- CN
- China
- Prior art keywords
- thread
- homogenizing
- section
- screw
- screw 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.)
- Active
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model discloses a screw rod with good homogenization effect, which comprises a screw rod body, wherein the screw rod body is provided with a handle section, an initial section, a first homogenization section, a second homogenization section, a third homogenization section and a fourth homogenization section; each having a stem; the outer diameter of the core column of the first homogenizing section is gradually increased from right to left; the outer diameter of the core column of the third homogenizing section is gradually reduced from right to left; the first homogenizing section has a first screw thread, the second homogenizing section has a second screw thread, the third homogenizing section has a third screw thread, and the fourth homogenizing section has a fourth screw thread; the thread pitch of the first thread is the maximum thread pitch of the first thread, the second thread, the third thread and the fourth thread, the thread pitches of the third thread and the fourth thread are equal, and the thread pitches of the third thread and the fourth thread are smaller than the thread pitch of the second thread. Therefore, compared with the prior art, the screw has the advantages of simple structure, easy manufacture, high homogenizing efficiency and the like; meanwhile, each thread is ingenious in design, and the material can be pushed forward.
Description
Technical Field
The utility model belongs to the technical field of the screw rod technique and specifically relates to indicate an effectual screw rod of homogenization.
Background
The screw is one of the key parts of the injection molding machine, rotates in the machine barrel of the injection molding machine and mainly has the main functions of conveying, compacting, melting and plasticizing solid plastic particles or plastic powder into a molten state; however, the general screw nowadays still has some defects: some structures are too complex to be manufactured; some structures are too simple, and the homogenization effect is not good; in addition, the screw is too simple to manufacture, so that the service life of the screw is not long.
Therefore, a new technical solution is needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a screw rod with good homogenization effect, which is skillfully designed to make the screw rod simpler in structure, easier to manufacture, and higher in homogenization efficiency than the existing screw rod; meanwhile, each thread is ingenious in design, so that the material can be pushed forward; and thirdly, the screw body is subjected to surface electroplating treatment and surface nitriding treatment, so that the service life of the screw is effectively prolonged.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a screw rod with good homogenizing effect comprises a screw rod body, wherein a handle section, an initial section, a first homogenizing section, a second homogenizing section, a third homogenizing section and a fourth homogenizing section are sequentially arranged on the screw rod body from right to left; and, each having a stem; wherein:
the outer diameter of the core column of the first homogenizing section is gradually increased from right to left; the outer diameter of the core column of the third homogenizing section is gradually reduced from right to left; the outer diameters of the stems of the second homogenizing section and the fourth homogenizing section are unchanged;
the first homogenizing section has a first screw thread, the second homogenizing section has a second screw thread, the third homogenizing section has a third screw thread, and the fourth homogenizing section has a fourth screw thread;
and the thread pitch of the first thread is the maximum thread pitch of the first thread, the second thread, the third thread and the fourth thread, the thread pitches of the third thread and the fourth thread are equal, and the thread pitches of the third thread and the fourth thread are smaller than the thread pitch of the second thread.
Preferably, the second thread has a double-thread structure, and includes a main thread and a secondary thread, and the front angle of the main thread and the secondary thread is smaller than the rear angle.
Preferably, the lead of the primary tooth is smaller than the lead of the secondary tooth; the pitch of the primary teeth is smaller than that of the secondary teeth.
Preferably, the surface of the screw body is plated with a metal reinforcing layer.
Preferably, the metal reinforcing layer is a chromium layer.
Preferably, the surface of the screw body is subjected to surface electroplating treatment and surface nitriding treatment in sequence, and an electroplating layer and a nitriding treatment layer are formed correspondingly.
Preferably, the left end of the screw body is hemispherical.
Preferably, the left side and the right side of the first thread, the third thread and the fourth thread are respectively provided with an arc transition surface which is connected between the corresponding outer peripheral surface and the outer diameter surface of the stem, and the diameter of the arc on the left side is smaller than that of the arc on the right side.
Preferably, the hardness of the screw body is 25 to 30 HRC.
Preferably, the outer diameter of the stem of the second homogenizing section is the same as the outer diameter of the left end of the stem of the first homogenizing section, the outer diameter of the right end of the stem of the third homogenizing section is the same as the outer diameter of the stem of the second homogenizing section, and the outer diameter of the right end of the stem of the fourth homogenizing section is the same as the outer diameter of the left end of the stem of the third homogenizing section.
Compared with the prior art, the utility model has obvious advantages and beneficial effects, particularly, the technical scheme is that the screw is skillfully designed, so that compared with the prior screw, the screw has the advantages of simple structure, easy manufacture, high homogenization efficiency and the like;
secondly, each thread is ingenious in design, and the material is favorably propelled; thirdly, the screw body is subjected to surface electroplating treatment and surface nitriding treatment, so that the service life of the screw is effectively prolonged;
and, forming a progressive homogenization by four homogenization sections; during primary homogenization, a gradually-large core column and a large pitch design are adopted, so that fluid smoothly accumulates impulsive force in a gradual change manner and enters secondary homogenization; during the second-stage homogenization, a core column with the same size is adopted, and the screw pitch of the core column is smaller than that of the first-stage homogenization, so that the fluid smoothly enters the third-stage homogenization during the second-stage homogenization; the fluid can be released at an accelerated speed during the three-stage homogenization, and the fluid is smoothly fed during the four-stage homogenization.
To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;
fig. 4 is an enlarged view at M of fig. 1.
The attached drawings indicate the following:
10. shank 101, left transition surface
102. Right transition surface 20, start section
30. A first homogenizing section 40 and a second homogenizing section
50. A third homogenizing section 60 and a fourth homogenizing section.
Detailed Description
Fig. 1 to 4 are schematic views showing specific structures of embodiments of the present invention.
A screw rod with good homogenizing effect comprises a screw rod body, wherein a handle section, an initial section 20, a first homogenizing section 30, a second homogenizing section 40, a third homogenizing section 50 and a fourth homogenizing section 60 are sequentially arranged on the screw rod body from right to left; and, each having a stem; wherein:
the outer diameter of the core column of the first homogenizing section 30 is gradually increased from right to left; the outer diameter of the core column of the third homogenizing section 50 is gradually reduced from right to left; the outer diameter of the stems of the second homogenizing section 40 and the fourth homogenizing section 60 is constant;
the first homogenizing section 30 has a first thread, the second homogenizing section 40 has a second thread, the third homogenizing section 50 has a third thread, and the fourth homogenizing section 60 has a fourth thread;
and the thread pitch of the first thread is the maximum thread pitch of the first thread, the second thread, the third thread and the fourth thread, the thread pitches of the third thread and the fourth thread are equal, and the thread pitches of the third thread and the fourth thread are smaller than the thread pitch of the second thread.
Preferably, the second thread is a double-thread structure, and comprises a main tooth and an auxiliary tooth, and the front angle of the main tooth and the front angle of the auxiliary tooth are smaller than the rear angle. Further, the lead of the primary tooth is less than the lead of the secondary tooth; the pitch of the primary teeth is smaller than that of the secondary teeth.
Further, a metal reinforcing layer is electroplated on the surface of the screw body. Meanwhile, the metal reinforcing layer is preferably a chromium layer.
Preferably, the surface of the screw body is sequentially subjected to surface electroplating treatment and surface nitriding treatment, and an electroplating layer and a nitriding treatment layer are correspondingly formed. So, can effectual improvement screw rod body wear-resisting, corrosion-resistant, the fatigue-resistant performance, the life of extension screw rod.
Preferably, the left end of the screw body is hemispherical and is provided with an arc-shaped surface, so that smooth discharging is facilitated.
Preferably, referring to fig. 4, the left and right sides of the first, third and fourth threads are designed with arc transition surfaces to be engaged between the corresponding outer peripheral surfaces and the outer diameter surface of the stem, and the diameter of the arc on the left side is smaller than that of the arc on the right side. Here, the left transition surface 101 and the right transition surface 102 are defined accordingly.
Furthermore, the hardness of the screw body is 25 to 30HRC, and the hardness can be obtained through quenching and tempering during manufacturing.
Meanwhile, more specifically, the stem outer diameter of the second homogenizing section 40 is the same as the stem left end outer diameter of the first homogenizing section 30, the stem right end outer diameter of the third homogenizing section 50 is the same as the stem outer diameter of the second homogenizing section 40, and the stem right end outer diameter of the fourth homogenizing section 60 is the same as the stem left end outer diameter of the third homogenizing section 50. Therefore, the design of gradually enlarging core columns and larger screw pitches is adopted during primary homogenization, so that the fluid smoothly accumulates impulsive force in a gradual change manner and enters secondary homogenization; during the second-stage homogenization, a core column with the same size is adopted, and the screw pitch of the core column is smaller than that of the first-stage homogenization, so that the fluid smoothly enters the third-stage homogenization during the second-stage homogenization; the fluid can be released at an accelerated speed during the three-stage homogenization, and the fluid is smoothly fed during the four-stage homogenization.
Meanwhile, when the screw is applied, the specific size of the screw is 1272mm in total length, 270mm in length of the handle part 10 and 2080mm in initial section, and the initial section 20 is provided with a transition screw ridge;
the first homogenizing segment 30 has a length of 350mm and a bottom diameter gradually changed from 61.5mm to 63mm (gradually changed from right to left);
the length of the second homogenizing section 40 is 220mm, the bottom diameter of the second homogenizing section is 63mm, the lead of the main teeth is 112mm, and the pitch of the teeth is 56 mm; the lead of the auxiliary teeth is 136mm, and the pitch is 68 mm;
the third homogenizing segment 50 has a length of 110mm and a bottom diameter gradually changed from 63mm to 62mm (gradually changed from right to left);
the fourth homogenizing section 60 has a length of 242mm and a base diameter of 62mm, and remains the same.
The utility model is mainly characterized in that the screw is skillfully designed, so that compared with the existing screw, the screw has the advantages of simpler structure, easy manufacture, high homogenization efficiency and multiple advantages;
secondly, each thread is ingenious in design, and the material is favorably propelled; thirdly, the screw body is subjected to surface electroplating treatment and surface nitriding treatment, so that the service life of the screw is effectively prolonged;
and, forming a progressive homogenization by four homogenization sections; during primary homogenization, a gradually-large core column and a large pitch design are adopted, so that fluid smoothly accumulates impulsive force in a gradual change manner and enters secondary homogenization; during the second-stage homogenization, a core column with the same size is adopted, and the screw pitch of the core column is smaller than that of the first-stage homogenization, so that the fluid smoothly enters the third-stage homogenization during the second-stage homogenization; the fluid can be released at an accelerated speed during the three-stage homogenization, and the fluid is smoothly fed during the four-stage homogenization.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides an effectual screw rod of homogenization which characterized in that: the screw rod body is provided with a handle section, an initial section, a first homogenizing section, a second homogenizing section, a third homogenizing section and a fourth homogenizing section from right to left in sequence; and, each having a stem; wherein:
the outer diameter of the core column of the first homogenizing section is gradually increased from right to left; the outer diameter of the core column of the third homogenizing section is gradually reduced from right to left; the outer diameters of the stems of the second homogenizing section and the fourth homogenizing section are unchanged;
the first homogenizing section has a first screw thread, the second homogenizing section has a second screw thread, the third homogenizing section has a third screw thread, and the fourth homogenizing section has a fourth screw thread;
and the thread pitch of the first thread is the maximum thread pitch of the first thread, the second thread, the third thread and the fourth thread, the thread pitches of the third thread and the fourth thread are equal, and the thread pitches of the third thread and the fourth thread are smaller than the thread pitch of the second thread.
2. The screw rod with good homogenizing effect as claimed in claim 1, wherein: the second screw thread is double thread structure, and it is including main tooth and vice tooth, just, the anterior angle of main tooth and vice tooth all is less than the relief angle.
3. The screw rod with good homogenizing effect as claimed in claim 2, wherein: the lead of the main tooth is smaller than that of the auxiliary tooth; the pitch of the primary teeth is smaller than that of the secondary teeth.
4. The screw rod with good homogenizing effect as claimed in claim 1, wherein: the surface of the screw body is electroplated with a metal reinforcing layer.
5. A screw rod with good homogenizing effect according to claim 4, characterized in that: the metal reinforcing layer is a chromium layer.
6. The screw rod with good homogenizing effect as claimed in claim 1, wherein: and sequentially carrying out surface electroplating treatment and surface nitriding treatment on the surface of the screw body to correspondingly form an electroplated layer and a nitriding treatment layer.
7. The screw rod with good homogenizing effect as claimed in claim 1, wherein: the end part of the left end of the screw body is hemispherical.
8. The screw rod with good homogenizing effect as claimed in claim 1, wherein: the left side and the right side of the first thread, the third thread and the fourth thread are respectively provided with an arc transition surface which is connected between the corresponding peripheral surface and the outer diameter surface of the core column, and the diameter of the arc on the left side is smaller than that of the arc on the right side.
9. The screw rod with good homogenizing effect as claimed in claim 1, wherein: the hardness of the screw body is 25 to 30 HRC.
10. The screw rod with good homogenizing effect as claimed in claim 1, wherein: the outer diameter of the stem of the second homogenizing section is the same as that of the left end of the stem of the first homogenizing section, the outer diameter of the right end of the stem of the third homogenizing section is the same as that of the stem of the second homogenizing section, and the outer diameter of the right end of the stem of the fourth homogenizing section is the same as that of the left end of the stem of the third homogenizing section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023263219.0U CN214395275U (en) | 2020-12-30 | 2020-12-30 | Screw rod with good homogenization effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023263219.0U CN214395275U (en) | 2020-12-30 | 2020-12-30 | Screw rod with good homogenization effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214395275U true CN214395275U (en) | 2021-10-15 |
Family
ID=78042314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023263219.0U Active CN214395275U (en) | 2020-12-30 | 2020-12-30 | Screw rod with good homogenization effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214395275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134289A (en) * | 2021-10-18 | 2022-03-04 | 上海船舶工艺研究所舟山船舶工程研究中心 | Wear-resistant screw with nano ceramic coating |
-
2020
- 2020-12-30 CN CN202023263219.0U patent/CN214395275U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134289A (en) * | 2021-10-18 | 2022-03-04 | 上海船舶工艺研究所舟山船舶工程研究中心 | Wear-resistant screw with nano ceramic coating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214395275U (en) | Screw rod with good homogenization effect | |
| CN2827583Y (en) | Helical hooping bending making machine | |
| CN1069852C (en) | Method and equipment for reducing tube end by roll forging | |
| CN2925715Y (en) | Extruded tap of machining connecting-rod threaded hole | |
| CN103079731A (en) | Compacting device | |
| CN210174135U (en) | Screw rod with double-thread structure | |
| CN207272077U (en) | A kind of Beam End mould of bolt | |
| CN214239478U (en) | Screw rod with high extrusion efficiency | |
| CN205780386U (en) | The automobile-used hub splines part that a kind of cold-extrusion technology shapes | |
| CN211591252U (en) | Screw capable of increasing glue discharging amount in cold feed extruder | |
| CN209616305U (en) | A kind of cladding alloy screw rod | |
| CN213033276U (en) | Extrusion forming die for small-modulus long spline of thin-walled pipe | |
| CN219360265U (en) | Conical extrusion molding screw | |
| CN214395349U (en) | Wear-resisting and effectual screw rod of mixing | |
| CN208068825U (en) | Wear resistant corrosion resistant type screw rod | |
| CN215242771U (en) | Special double-screw for double-screw plastic extruder | |
| CN114472576A (en) | Extrusion-twisting large-plastic-deformation die and forming method for ultrafine-grained bar | |
| CN215396795U (en) | Screw rod with good extrusion effect | |
| CN106424490A (en) | Cold-rolling thread forming cutter | |
| CN217346553U (en) | Silica gel special-purpose extrusion screw | |
| CN217752688U (en) | Conical screw for conical double-cylinder | |
| CN205250233U (en) | Collagen casing spouts knitted -formed subassembly of machine | |
| CN218366318U (en) | Mixing screw | |
| CN216760568U (en) | Special screw for foaming | |
| CN201711622U (en) | Screw thread plate structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |