CN203739199U - Conical screw for extruder - Google Patents
Conical screw for extruder Download PDFInfo
- Publication number
- CN203739199U CN203739199U CN201420131305.1U CN201420131305U CN203739199U CN 203739199 U CN203739199 U CN 203739199U CN 201420131305 U CN201420131305 U CN 201420131305U CN 203739199 U CN203739199 U CN 203739199U
- Authority
- CN
- China
- Prior art keywords
- tooth form
- spire
- length
- angle
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a conical screw for an extruder. The conical screw comprises a screw body, wherein a dowel is arranged at the top of the screw body; the screw body is sequentially provided with a first spiral part of which the length is 20 to 25 percent of that of the screw body, a second spiral part of which the length is 3 to 5 percent of that of the screw body, a third spiral part of which the length is 7 to 12 percent of that of the screw body, a fourth spiral part of which the length is 3 to 5 percent of that of the screw body, a fifth spiral part of which the length is 10 to 15 percent of that of the screw body and a sixth spiral part of which the length is 20 to 25 percent of that of the screw body from bottom to top; a gap is formed between every two adjacent spiral parts; a base angle of the conical screw is 86 to 89 degrees; a feed pipe is arranged in the center of the screw body; an outlet of the feed pipe is formed in the gap between the second and third spiral parts; a folded plate inclined towards a discharging direction is arranged at the top of a thread of the first spiral part. According to the conical screw, the shortcomings of the prior art can be overcome, and the surface roughness of a product can be reduced to be lower than 0.3.
Description
Technical field
The utility model relates to plastic extruder technical field, especially a kind of extruder conical screw.
Background technology
The screw rod of extruder is the vitals of extruder, for the plasticizing of plastic raw materials particle is extruded.In prior art, Chinese utility model patent CN100509350C discloses a kind of screw rod of extruder, has reduced because raw material decomposes the bubble producing, and has improved plasticizing effect.
But still there is the degree of mixing that cannot improve plastic raw materials and other additive in this technical scheme, causes finished product surface roughness higher than 1.0.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of extruder conical screw, can solve the deficiencies in the prior art, product surface roughness can be reduced to below 0.3.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
A kind of extruder conical screw, comprise the body of rod, the top of the body of rod is provided with pin, the body of rod is disposed with the first spire of tapered arrangement from bottom to top, the second spire, triple helical portion, the 4th spire, the 5th spire, the 6th spire, between adjacent two spires, be provided with gap, wherein the length of the first spire accounts for 20%～25% of body of rod length, the length of the second spire accounts for 3%～5% of body of rod length, the length of triple helical portion accounts for 7%～12% of body of rod length, the length of the 4th spire accounts for 3%～5% of body of rod length, the length of the 5th spire accounts for 10%～15% of body of rod length, the length of the 6th spire accounts for 20%～25% of body of rod length, taper base angle is 86 °～89 °, described body of rod center is provided with feed pipe, the outlet of feed pipe is arranged in the gap between the second spire and triple helical portion, the top of the first spire screw thread is provided with the flap tilting to discharging direction.
As preferably, described the first spire comprises the first tooth form and the second tooth form, and the length ratio of the first tooth form and the second tooth form is 20: 3, under the first tooth form tooth form angle be 6 ', on the first tooth form, tooth form angle is 14 °, under the second tooth form tooth form angle be 3 ', on the second tooth form tooth form angle be 9 '.
As preferably, the hyperdontogeny type tooth form angle of the hyperdontogeny type of described the second spire is 12 °.
As preferably, under the 4th tooth form of the 4th tooth form of described triple helical portion tooth form angle be 3 ', on the 4th tooth form, tooth form angle is 9 °.
As preferably, the 5th tooth form tooth form angle of the 5th tooth form of described the 4th spire is 5 '.
As preferably, under the 6th tooth form of the 6th tooth form of described the 5th spire tooth form angle be 18 ', on the 6th tooth form, tooth form angle is 33 °.
As preferably, described the 6th spire comprises the 7th tooth form, the 8th tooth form and the 9th tooth form, the length ratio of the 7th tooth form, the 8th tooth form and the 9th tooth form is 1: 1: 2, the 7th tooth form tooth form angle is 18 °, the 8th tooth form tooth form angle is 25 °, under the 9th tooth form tooth form angle be 25 ', on the 9th tooth form, tooth form angle is 50 °.
The beneficial effect that adopts technique scheme to bring is: the utility model is by arranging the spire of six different tooth forms, and optimize the parameter of each spire, improve the mixing uniformity of various compositions in extruder, reduced the surface roughness of finished product.The feed pipe communicating with the gap between the second spire and triple helical portion can fill into raw material in screw rod, reduces because the part of temperature in screw rod reduces the raw material causing and shrinks generation bubble.Flap can improve the pressure of pushing of screw rod convection cell raw material, avoids generation gap and bubble in raw material.
Brief description of the drawings
Fig. 1 is the cutaway view of the utility model embodiment 1.
Fig. 2 is the cutaway view of A-A direction in Fig. 1.
Fig. 3 is the schematic diagram of the first tooth form in the utility model embodiment 1.
Fig. 4 is the schematic diagram of the second tooth form in the utility model embodiment 1.
Fig. 5 is the schematic diagram of hyperdontogeny type in the utility model embodiment 1.
Fig. 6 is the schematic diagram of the 4th tooth form in the utility model embodiment 1.
Fig. 7 is the schematic diagram of the 5th tooth form in the utility model embodiment 1.
Fig. 8 is the schematic diagram of the 6th tooth form in the utility model embodiment 1.
Fig. 9 is the schematic diagram of the 7th tooth form in the utility model embodiment 1.
Figure 10 is the schematic diagram of the 8th tooth form in the utility model embodiment 1.
Figure 11 is the schematic diagram of the 9th tooth form in the utility model embodiment 1.
In figure: 1, the body of rod; 2, pin; 3, the first spire; 4, the second spire; 5, triple helical portion; 6, the 4th spire; 7, the 5th spire; 8, the 6th spire; 9, gap; 10, feed pipe; 11, flap; 12, the first tooth form; 13, the second tooth form; 14, hyperdontogeny type; 15, the 4th tooth form; 16, the 5th tooth form; 17, the 6th tooth form; 18, the 7th tooth form; 19, the 8th tooth form; 20, the 9th tooth form; 21, through hole; α, taper base angle; Tooth form angle under β 1, the first tooth form; Tooth form angle on β 2, the first tooth form; Tooth form angle under β 3, the second tooth form; Tooth form angle on β 4, the second tooth form; β 5, hyperdontogeny type tooth form angle; Tooth form angle under β 6, the 4th tooth form; Tooth form angle on β 7, the 4th tooth form; β 8, the 5th tooth form tooth form angle; Tooth form angle under β 9, the 6th tooth form; Tooth form angle on β 10, the 6th tooth form; β 11, the 7th tooth form tooth form angle; β 12, the 8th tooth form tooth form angle; Tooth form angle under β 13, the 9th tooth form; Tooth form angle on β 14, the 9th tooth form.
Detailed description of the invention
Embodiment 1
With reference to Fig. 1-2, the structure of the present embodiment comprises the body of rod 1, the top of the body of rod 1 is provided with pin 2, the body of rod 1 is disposed with the first spire 3 of tapered arrangement from bottom to top, the second spire 4, triple helical portion 5, the 4th spire 6, the 5th spire 7, the 6th spire 8, between adjacent two spires, be provided with gap 9, wherein the length of the first spire 3 accounts for 22% of the body of rod 1 length, the length of the second spire 4 accounts for 3.5% of the body of rod 1 length, the length of triple helical portion 5 accounts for 10% of the body of rod 1 length, the length of the 4th spire 6 accounts for 4% of the body of rod 1 length, the length of the 5th spire 7 accounts for 14% of the body of rod 1 length, the length of the 6th spire 8 accounts for 22% of the body of rod 1 length, taper base angle is 88 °, the described body of rod 1 center is provided with feed pipe 10, the outlet of feed pipe 10 is arranged in the gap 9 between the second spire 4 and triple helical portion 5, the top of the first spire 3 screw threads is provided with the flap 11 tilting to discharging direction, the angle of inclination of flap 11 is 30 °.
It should be noted that, described the first spire 3 comprises the first tooth form 12 and the second tooth form 13, the length ratio of the first tooth form 12 and the second tooth form 13 is 5: 1, under the first tooth form tooth form angle β 1 be 8 ', on the first tooth form, tooth form angle β 2 is 15 °, under the second tooth form tooth form angle β 3 be 4 ', on the second tooth form tooth form angle β 4 be 10 '.
Hyperdontogeny type tooth form angle β 5 that it should be noted that the hyperdontogeny type 14 of described the second spire 4 is 13 °.
It should be noted that under the 4th tooth form of the 4th tooth form 15 of described triple helical portion 5 tooth form angle β 6 be 4 ', on the 4th tooth form, tooth form angle β 7 is 10 °.
The 5th tooth form tooth form angle β 8 that it should be noted that the 5th tooth form 16 of described the 4th spire 5 is 6 '.
It should be noted that under the 6th tooth form of the 6th tooth form 17 of described the 5th spire 7 tooth form angle β 9 be 20 ', on the 6th tooth form, tooth form angle β 10 is 36 °.
It should be noted that, described the 6th spire comprises the 7th tooth form 18, the 8th tooth form 19 and the 9th tooth form 20, the length ratio of the 7th tooth form 18, the 8th tooth form 19 and the 9th tooth form 20 is 1: 1: 1, the 7th tooth form tooth form angle β 11 is 21 °, the 8th tooth form tooth form angle β 12 is 28 °, under the 9th tooth form tooth form angle β 13 be 30 ', on the 9th tooth form, tooth form angle β 14 is 56 °.
In addition, on the screw thread of described triple helical portion 5, be evenly provided with 5 through holes 21, the bottom of through hole 21 is semicircle.Through hole 21 can improve from feed pipe 10 speed that the raw material that flows out mixes with other raw material.
Embodiment 2
The structure of the present embodiment comprises the body of rod 1, the top of the body of rod 1 is provided with pin 2, the body of rod 1 is disposed with the first spire 3 of tapered arrangement from bottom to top, the second spire 4, triple helical portion 5, the 4th spire 6, the 5th spire 7, the 6th spire 8, between adjacent two spires, be provided with gap 9, wherein the length of the first spire 3 accounts for 20% of the body of rod 1 length, the length of the second spire 4 accounts for 3% of the body of rod 1 length, the length of triple helical portion 5 accounts for 7% of the body of rod 1 length, the length of the 4th spire 6 accounts for 3% of the body of rod 1 length, the length of the 5th spire 7 accounts for 10% of the body of rod 1 length, the length of the 6th spire 8 accounts for 20% of the body of rod 1 length, taper base angle is 86 °, the described body of rod 1 center is provided with feed pipe 10, the outlet of feed pipe 10 is arranged in the gap 9 between the second spire 4 and triple helical portion 5, the top of the first spire 3 screw threads is provided with the flap 11 tilting to discharging direction, the angle of inclination of flap 11 is 20 °.
It should be noted that, described the first spire 3 comprises the first tooth form 12 and the second tooth form 13, the length ratio of the first tooth form 12 and the second tooth form 13 is 20: 3, under the first tooth form tooth form angle β 1 be 6 ', on the first tooth form, tooth form angle β 2 is 14 °, under the second tooth form tooth form angle β 3 be 3 ', on the second tooth form tooth form angle β 4 be 9 '.
Hyperdontogeny type tooth form angle β 5 that it should be noted that the hyperdontogeny type 14 of described the second spire 4 is 12 °.
It should be noted that under the 4th tooth form of the 4th tooth form 15 of described triple helical portion 5 tooth form angle β 6 be 3 ', on the 4th tooth form, tooth form angle β 7 is 9 °.
The 5th tooth form tooth form angle β 8 that it should be noted that the 5th tooth form 16 of described the 4th spire 5 is 5 '.
It should be noted that under the 6th tooth form of the 6th tooth form 17 of described the 5th spire 7 tooth form angle β 9 be 18 ', on the 6th tooth form, tooth form angle β 10 is 33 °.
It should be noted that, described the 6th spire comprises the 7th tooth form 18, the 8th tooth form 19 and the 9th tooth form 20, the length ratio of the 7th tooth form 18, the 8th tooth form 19 and the 9th tooth form 20 is 1: 1: 2, the 7th tooth form tooth form angle β 11 is 18 °, the 8th tooth form tooth form angle β 12 is 25 °, under the 9th tooth form tooth form angle β 13 be 25 ', on the 9th tooth form, tooth form angle β 14 is 50 °.
In addition, on the screw thread of described triple helical portion 5, be evenly provided with 5 through holes 21, through hole 21 be triangle.
Embodiment 3
The structure of the present embodiment comprises the body of rod 1, the top of the body of rod 1 is provided with pin 2, the body of rod 1 is disposed with the first spire 3 of tapered arrangement from bottom to top, the second spire 4, triple helical portion 5, the 4th spire 6, the 5th spire 7, the 6th spire 8, between adjacent two spires, be provided with gap 9, wherein the length of the first spire 3 accounts for 25% of the body of rod 1 length, the length of the second spire 4 accounts for 5% of the body of rod 1 length, the length of triple helical portion 5 accounts for 12% of the body of rod 1 length, the length of the 4th spire 6 accounts for 5% of the body of rod 1 length, the length of the 5th spire 7 accounts for 15% of the body of rod 1 length, the length of the 6th spire 8 accounts for 25% of the body of rod 1 length, taper base angle is 89 °, the described body of rod 1 center is provided with feed pipe 10, the outlet of feed pipe 10 is arranged in the gap 9 between the second spire 4 and triple helical portion 5, the top of the first spire 3 screw threads is provided with the flap 11 tilting to discharging direction, the angle of inclination of flap 11 is 35 °.
It should be noted that, described the first spire 3 comprises the first tooth form 12 and the second tooth form 13, the length ratio of the first tooth form 12 and the second tooth form 13 is 20: 3, under the first tooth form tooth form angle β 1 be 6 ', on the first tooth form, tooth form angle β 2 is 14 °, under the second tooth form tooth form angle β 3 be 3 ', on the second tooth form tooth form angle β 4 be 9 '.
Hyperdontogeny type tooth form angle β 5 that it should be noted that the hyperdontogeny type 14 of described the second spire 4 is 12 °.
It should be noted that under the 4th tooth form of the 4th tooth form 15 of described triple helical portion 5 tooth form angle β 6 be 3 ', on the 4th tooth form, tooth form angle β 7 is 9 °.
The 5th tooth form tooth form angle β 8 that it should be noted that the 5th tooth form 16 of described the 4th spire 5 is 5 '.
It should be noted that under the 6th tooth form of the 6th tooth form 17 of described the 5th spire 7 tooth form angle β 9 be 18 ', on the 6th tooth form, tooth form angle β 10 is 33 °.
It should be noted that, described the 6th spire comprises the 7th tooth form 18, the 8th tooth form 19 and the 9th tooth form 20, the length ratio of the 7th tooth form 18, the 8th tooth form 19 and the 9th tooth form 20 is 1: 1: 2, the 7th tooth form tooth form angle β 11 is 18 °, the 8th tooth form tooth form angle β 12 is 25 °, under the 9th tooth form tooth form angle β 13 be 25 ', on the 9th tooth form, tooth form angle β 14 is 50 °.
The product that above three embodiment and prior art are produced detects contrast, and concrete condition sees the following form,
More than show and described general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. an extruder conical screw, comprise the body of rod (1), the top of the body of rod (1) is provided with pin (2), it is characterized in that: the body of rod (1) is disposed with first spire (3) of tapered arrangement from bottom to top, the second spire (4), triple helical portion (5), the 4th spire (6), the 5th spire (7), the 6th spire (8), between adjacent two spires, be provided with gap (9), wherein the length of the first spire (3) accounts for 20%～25% of the body of rod (1) length, the length of the second spire (4) accounts for 3%～5% of the body of rod (1) length, the length of triple helical portion (5) accounts for 7%～12% of the body of rod (1) length, the length of the 4th spire (6) accounts for 3%～5% of the body of rod (1) length, the length of the 5th spire (7) accounts for 10%～15% of the body of rod (1) length, the length of the 6th spire (8) accounts for 20%～25% of the body of rod (1) length, taper base angle (α) is 86 °～89 °, the described body of rod (1) center is provided with feed pipe (10), the outlet of feed pipe (10) is arranged in the gap (9) between the second spire (4) and triple helical portion (5), the top of the first spire (3) screw thread is provided with the flap (11) tilting to discharging direction.
2. extruder conical screw according to claim 1, it is characterized in that: described the first spire (3) comprises the first tooth form (12) and the second tooth form (13), the length ratio of the first tooth form (12) and the second tooth form (13) is 20: 3, tooth form angle under the first tooth form (β 1) is 6 ', (β 2) is 14 ° at tooth form angle on the first tooth form, tooth form angle under the second tooth form (β 3) is 3 ', tooth form angle on the second tooth form (β 4) be 9 '.
3. extruder conical screw according to claim 1, is characterized in that: the hyperdontogeny type tooth form angle (β 5) of the hyperdontogeny type (14) of described the second spire (4) is 12 °.
4. extruder conical screw according to claim 1, it is characterized in that: under the 4th tooth form of the 4th tooth form (15) of described triple helical portion (5) tooth form angle (β 6) be 3 ', tooth form angle on the 4th tooth form (β 7) is 9 °.
5. extruder conical screw according to claim 1, is characterized in that: the 5th tooth form tooth form angle (β 8) of the 5th tooth form (16) of described the 4th spire (5) is 5 '.
6. extruder conical screw according to claim 1, it is characterized in that: under the 6th tooth form of the 6th tooth form (17) of described the 5th spire (7) tooth form angle (β 9) be 18 ', tooth form angle on the 6th tooth form (β 10) is 33 °.
7. extruder conical screw according to claim 1, it is characterized in that: described the 6th spire comprises the 7th tooth form (18), the 8th tooth form (19) and the 9th tooth form (20), the length ratio of the 7th tooth form (18), the 8th tooth form (19) and the 9th tooth form (20) is 1: 1: 2, the 7th tooth form tooth form angle (β 11) is 18 °, the 8th tooth form tooth form angle (β 12) is 25 °, tooth form angle under the 9th tooth form (β 13) is 25 ', tooth form angle on the 9th tooth form (β 14) is 50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131305.1U CN203739199U (en) | 2014-03-19 | 2014-03-19 | Conical screw for extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131305.1U CN203739199U (en) | 2014-03-19 | 2014-03-19 | Conical screw for extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203739199U true CN203739199U (en) | 2014-07-30 |
Family
ID=51339059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420131305.1U Withdrawn - After Issue CN203739199U (en) | 2014-03-19 | 2014-03-19 | Conical screw for extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203739199U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690943B (en) * | 2014-03-19 | 2018-04-13 | 保定东禾新型材料科技有限公司 | A kind of extruder conical screw |
-
2014
- 2014-03-19 CN CN201420131305.1U patent/CN203739199U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690943B (en) * | 2014-03-19 | 2018-04-13 | 保定东禾新型材料科技有限公司 | A kind of extruder conical screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104290309B (en) | Extruding screw for single screw extruder | |
| CN102950749B (en) | PP-R (polypropylene) pipe production equipment | |
| CN203739199U (en) | Conical screw for extruder | |
| CN203557672U (en) | Forced material pushing type rubber extruding machine screw rod | |
| CN202986168U (en) | Two-stage material pushing forced feeding mechanism of vertical-shaft and circular-mould biomass briquetting machine | |
| CN202690656U (en) | Hollow bolt | |
| CN104690943B (en) | A kind of extruder conical screw | |
| CN106042152B (en) | Frame head apparatus for extruder forming and sintering exposed wall decorative hangig panel | |
| CN103277386A (en) | Convenient and stable thread structure | |
| CN204526092U (en) | The special two sections of BM formula screw rods of electric wire extruder | |
| CN203739185U (en) | Eccentric confluence core | |
| CN202623243U (en) | Plastic extruding machine with conical screw | |
| CN205735681U (en) | A kind of PVC powder double-screw feeder | |
| CN205415953U (en) | Outer taper sleeve | |
| CN202079751U (en) | Extruder used for manufacturing plastic light particles | |
| CN206816651U (en) | A kind of anti-loosing nut and its air purifier | |
| CN206510384U (en) | A kind of new wavy injection screw | |
| CN205130310U (en) | Screw rod | |
| CN203542977U (en) | High-efficiency color mixture mixing device in injection molding machine | |
| CN206306468U (en) | A kind of flying print pipette tips for 3D printer | |
| CN202264379U (en) | Screw of polymer extruder | |
| CN203876204U (en) | Screw rod for screw extruder | |
| CN204183868U (en) | A kind of assembled screw rod for the production of PA6 fibre modification material | |
| CN202781735U (en) | Screw for processing PET (polyethylene terephthalate) material | |
| CN203125926U (en) | Novel thermal feeding extrusion machine screw rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAODING DONGHE PLASTIC CO., LTD. Free format text: FORMER OWNER: BAODING CHANGHE PLASTIC MACHINERY MANUFACTURE CO., LTD. Effective date: 20150126 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 071000 BAODING, HEBEI PROVINCE TO: 072250 BAODING, HEBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150126 Address after: 072250, Baoding County, Hebei province Shunping County waist mountain industrial concentration area Patentee after: BAODING DONGHE PLASTIC INDUSTRY CO., LTD. Address before: 071000, Baoding County, Hebei province Shunping County waist mountain industrial concentration area Patentee before: Long river, Baoding plastics machinery Manufacturing Co., Ltd |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140730 Effective date of abandoning: 20180413 |
|
| AV01 | Patent right actively abandoned |