CN202225415U - Single-screw extruder - Google Patents
Single-screw extruder Download PDFInfo
- Publication number
- CN202225415U CN202225415U CN2011203485468U CN201120348546U CN202225415U CN 202225415 U CN202225415 U CN 202225415U CN 2011203485468 U CN2011203485468 U CN 2011203485468U CN 201120348546 U CN201120348546 U CN 201120348546U CN 202225415 U CN202225415 U CN 202225415U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- screw
- sheet
- outer peripheral
- peripheral face
- 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- Withdrawn - After Issue
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Classifications
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/52—Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a single-screw extruder, which comprises a casing and a screw. The screw is rotationally arranged in a rotary cavity inside the casing, a main push plate is arranged on the outer circumference of the screw and helically extends on the same, the casing is provided with a feed inlet and a discharge outlet, the screw is provided with a feed part and a discharge part, the feed part of the screw is arranged at the feed inlet of the casing, the discharge part of the screw is arranged in the discharge outlet of the casing, a screw structure extending helically is arranged on the outer circumference of the feed part of the screw, screw pitch of the screw structure is different from that of the main push plate on the feed part of the screw, the screw structure and the main push plate can cross at least one time, and accordingly, the crossed part of the screw structure and the main push plate forms a tip-shaped shearing structure. Gaps among particles extruded from the extruder are small, quality of subsequent injection parts can be guaranteed and particles can smoothly run on the screw.
Description
Technical field
The utility model relates to a kind of extrusion equipment that is used for particulate material is carried out extrusion and output, and more particularly, the utility model relates to a kind of extruder of single-screw.
Background technology
Extruder is used for multiple particulate material is carried out also exporting after the abundant extrusion, is mainly used in plastics or rubber manufacturing machine field.(patent No.: disclose a kind of single-screw extruder 200910003544.2), structure comprises the housing that has at least one hole and the antetheca that surrounds said hole at Chinese invention patent.In antetheca, be formed with and the concentrical recess in hole.In the hole, be provided with worm screw, this worm screw comprises and passes the outside cylindrical support part of recess.One fills out sealing against the sealing of recess and supporting part, this fill out sealing on the direction in hole against an opposition supporting member.Supporting part is provided with sliding bearing, and this sliding bearing radially supports against recess, and cantilevered ground supporting worm screw.One clamping device engages with antetheca, and this clamping device presses sliding bearing and fills out sealing, makes that filling out sealing radially is out of shape with the mode of sealing.
Spiral push jack in this extruder on the screw rod is a monolithic, and screw rod push jack in rotation process promotes particulate material and transports to the discharging portion direction from feeder, reaches the purpose of conveying.But the inlet amount of this extruder in fill process is wayward; The variation of inlet amount is prone to make and forms the gap between the particulate material; Particulate material by Screw Extrusion in, if there is not special frame for movement that it is handled, it more is to be embodied in the variation of gap size that gap between the particulate material changes; Gap in the particulate material also is difficult for eliminating fully; After the particulate material that inside has a more gap entered in the die cavity of injection machine, some gaps in the particulate material can form bubble in the wall body of moulding, and this can have influence on the quality of moulding.And, when the push jack of one chip is advanced in the promotion particulate material, to build up in the groove that is prone between push jack and screw rod side face, form, this can have influence on the smoothness of on screw rod, advancing.
Summary of the invention
For overcoming above-mentioned defective, the utility model technical issues that need to address are: a kind of single screw extrusion machine is provided, and this extruder is good to the mixed stirring property of particulate material.
The utility model solves the in-problem technical scheme of prior art: a kind of single screw extrusion machine, comprise housing, screw rod, and screw rod is arranged in the commentaries on classics chamber in the housing rotationally; The outer peripheral face of screw rod is provided with promotes mainly sheet; Promote mainly sheet spiral on the screw rod outer peripheral face and extend layout, housing is provided with charging aperture and discharging opening, has feeder and discharging portion on the screw rod; The feeder of screw rod is positioned at the charging aperture position of housing; The discharging portion of screw rod is positioned at the discharging opening of housing, on the outer peripheral face of screw feed portion, is provided with the helical structure that spiral extends, and the pitch of helical structure is with to promote mainly the pitch of sheet in screw feed portion variant; Helical structure takes place at least once to intersect with promoting mainly between the sheet, thereby at position formation tip-angled shape shear constitution that both intersect.The charging aperture of particulate material on housing promoted mainly to be entered in the gap of changeing between chamber and the screw rod after sheet stirs, and under the promotion of promoting mainly sheet, marches to the discharging portion place of screw rod along the outer peripheral face spiral of screw rod, and is extruded from the discharging opening of housing.When particulate material advanced to the shear constitution place, shear constitution can be to carrying out shear agitation.
Described helical structure is the flight that is projected into the screw rod outer peripheral face outside, flight at the height on the screw rod outer peripheral face less than promoting mainly the height of sheet on the screw rod outer peripheral face.Flight with promote mainly the sheet intersection and formed described shear constitution, this shear constitution is used for the particulate material that advances to is here carried out shear agitation, particulate material can be crossed flight and under the promotion of promoting mainly sheet, continued to move ahead.After being sheared the structure stirring, help eliminating the gap between the particulate material, be convenient to further smooth and easy the advancing of particulate material.
Described helical structure is to be recessed into the inboard helicla flute of screw rod outer peripheral face.Helicla flute blocks in the position that both intersect promoting mainly sheet, thereby forms the stirring body of tip-angled shape in the truncated position of promoting mainly sheet, and the mixing effect of the particulate material that this stirring body is right is good.
The pitch of promoting mainly sheet on the said screw feed portion outer peripheral face is greater than promoting mainly the pitch of sheet at the screw rod remainder; On screw feed portion outer peripheral face, be provided with the secondary push jack that spiral extends; On secondary push jack and the screw feed portion outer peripheral face to promote mainly sheet parallel, secondary push jack at the height on the screw rod outer peripheral face less than promoting mainly the height of sheet on the screw rod outer peripheral face.Promote mainly sheet and be greater than the pitch of remainder in the pitch of screw feed portion, this is convenient to guarantee the inlet amount of screw feed portion, and set secondary push jack in screw feed portion can promote particulate material to enter in the gap of changeing between chamber and the screw rod outer peripheral face.
The distance of promoting mainly between the sheet on said secondary push jack and the screw feed portion outer peripheral face equals to promote mainly the pitch of sheet on other part of screw rod.This makes the particulate material that enters into the screw rod downstream position have better packing, has both guaranteed the load of particulate material, has also guaranteed the smoothness of on screw rod, advancing in particulate material simultaneously.
Said screw rod is provided with helicitic texture in the side face in the feeder outside, in housing, is provided with the ring surface that matches with this helicitic texture, and the hand of spiral of helicitic texture is opposite with the hand of spiral of promoting mainly sheet.This helicitic texture is being followed screw rod when rotating together, promotes particulate material and advances towards promoting mainly the sheet direction, in order to avoid a spot of particulate material drops out the outside of housing.
The place is provided with ventilation device at the housing medium position, and ventilation device is linked up described commentaries on classics chamber and hull outside; Be provided with the profile of tooth convex body that some intervals are provided with on the sheet lateral surface promoting mainly, the interval between the profile of tooth convex body forms the exhaust passage, and the profile of tooth convex body is near described ventilation device, and is positioned at the upstream position of said ventilation device.In particulate material is squeezed the process of gap smaller; Correspondingly can produce certain air; In addition, in the particulate material traveling process self also because of the friction high temperature decomposite certain gas, these decomposition gases and air are discharged to the outside of housing through ventilation device; This is convenient to the smoothness in the particulate material traveling process, the compactness of the particulate material that also can improve simultaneously.
Described profile of tooth convex body is distributed in the pitch and promotes mainly on the lateral surface of sheet.This has improved the effect of exhaust, and the setting of profile of tooth convex body simultaneously can not produce bigger influence to advancing of particulate material yet.
The diameter of said screw rod becomes big gradually from medium position to two ends.The architectural feature of screw rod makes exhaust smoothness in the extruder course of work, is convenient to advancing of particulate material.
On the distolateral outer peripheral face of screw rod discharging portion, be provided with some spaced apart rhombus convex bodys.The rhombus convex body that is provided with can stir particulate material at housing discharging opening place, is convenient to particulate material and in extruder, is extruded.
The beneficial effect of the utility model is:
1, owing to be provided with described helical structure at screw feed portion place, thereby in screw feed portion, form described shear constitution, these shear constitutions can stir particulate material, the mixed adequacy of each component of particulate material in helping improving;
2, because the existence meeting of shear constitution has certain retardation to the particulate material that advances to here, this convenient accumulation at the shear constitution place is convenient to reduce the gap in the particulate material, and this provides assurance for the quality of follow-up moulding;
3, owing to the shear agitation of shear constitution to particulate material, particulate material is difficult on screw rod, building up the slivering body, and this has made things convenient for particulate material continuing on screw rod to advance, and the smoothness in the particulate material traveling process is good.
Description of drawings
Fig. 1 is the longitudinal sectional view of the utility model single screw extrusion machine.
Fig. 2 is the structural representation of screw rod.
Fig. 3 is the cutaway view along A-A direction among Fig. 1.
Fig. 4 is that G among Fig. 2 is to structural representation.
The specific embodiment
Pass through specific embodiment below, and combine Figure of description that the technical scheme of the utility model is further specified:
The structure of the utility model single screw extrusion machine comprises housing 7 and screw rod 1, has the chamber 12 of commentaries on classics in the housing 7, and screw rod 1 is arranged on to be changeed in the chamber 12.Housing 7 is linked together by the connected body 3 of a plurality of hollows and constitutes, and between adjacent two connected bodies 3, is provided with the adpting flange of being convenient to their and being fixedly connected.
Have feeder 14 and discharging portion 15 on the screw rod 1; Housing 7 is provided with discharging opening and charging aperture; Feeder 14 on the screw rod 1 is positioned at the charging aperture position of housing 7, and the discharging portion 15 on the screw rod 1 is plugged in the discharging opening of housing 7, below housing 7 discharging openings, is provided with Material collecting box for harvesting 11.
On the outer peripheral face of screw rod 1, be provided with and promote mainly sheet 9, promote mainly sheet 9 and be connected as a single entity, promote mainly sheet 9 and extend along screw rod 1 outer peripheral face spiral with screw rod 1.
In the outer port part of housing 7 discharging openings, be provided with reclaiming plate 8, reclaiming plate 8 is provided with some penetrating extrusion cavities, and these extrusion cavities are along the axial setting of reclaiming plate 8.On the side face near feeder 14 outsides on the screw rod 1, be provided with helicitic texture 2; The corresponding position is provided with the ring surface that is used for helicitic texture 2 cooperations in housing 7; The hand of spiral of helicitic texture 2 is with to promote mainly the hand of spiral of sheet 9 on screw rod 1 opposite, and helicitic texture 2 is used to realize the sealing between screw rod 1 and the housing 7.Described helicitic texture 2 is two groups, these two groups of helicitic textures 2 along screw rod 1 axially between have at interval.
The outer peripheral face of screw rod 1 feeder 14 is provided with the helical structure that extends along screw rod 1 outer peripheral face spiral; The hand of spiral of helical structure is with to promote mainly the hand of spiral of sheet 9 on screw rod 1 identical; And the pitch of this helical structure is with to promote mainly the pitch of sheet 9 on screw rod 1 feeder 14 variant; This makes helical structure have at least one place between the plate and intersect with promoting mainly, thereby forms the shear constitution 13 of tip-angled shape at their crossover sites places between the two.
Helical structure can be a flight, also can be helicla flute 4.When being flight, flight and screw rod 1 are connected as a single entity, the outside of outstanding screw rod 1 outer peripheral face of flight, and flight is less than at the height on the outer peripheral face on the screw rod 1 and promotes mainly the height of sheet 9 on screw rod 1 outer peripheral face.When being helicla flute 4, helicla flute 4 is recessed into the inboard of screw rod 1 outer peripheral face, and helicla flute 4 blocks promoting mainly sheet 9 in the extension process.Based on the consideration to the conveying effect, helical structure is preferably helicla flute 4.
Promoting mainly the pitch of sheet 9 at screw rod 1 feeder 14 places is greater than and promotes mainly the pitch of sheet 9 at screw rod 1 other part places; On the outer peripheral face of screw rod 1 feeder 14, be provided with secondary push jack 5; Secondary push jack 5 extends along screw rod 1 outer peripheral face spiral; The hand of spiral of secondary push jack 5 is identical with the hand of spiral of promoting mainly sheet 9, and secondary push jack 5 is parallel with promoting mainly between the sheet 9 of screw rod 1 feeder 14 places.Secondary push jack 5 and screw rod 1 feeder 14 places promote mainly remainder on axial distance and the screw rod 1 between the sheet 9 and promote mainly the pitch of sheet 9 and equate, and secondary push jack 5 is less than at the height on screw rod 1 feeder 14 outer peripheral faces and promotes mainly the height of sheet 9 on screw rod 1 feeder 14 outer peripheral faces.
Promote mainly sheet 9 and promote can produce a certain amount of gas in the process that particulate material advance on screw rod 1, existing on certain degree of these gases can have influence on the smoothness that particulate material is advanced, and therefore is necessary to export to these gas the outside of housing 7.Therefore, on housing 7, be provided with ventilation device 6, the commentaries on classics chamber 12 in these ventilation device 6 communication housings 7 and the outside of housing 7 in the medium position place of screw rod 1 length direction.Circulation for ease of gas; Be provided with some spaced apart profile of tooth convex bodys 10 on sheet 9 lateral surfaces promoting mainly, the interval between profile of tooth convex body 10 forms the exhaust passage, and profile of tooth convex body 10 is along the axial setting of screw rod 1; These profile of tooth convex bodys 10 are distributed in the spiral shell square and promote mainly on the outer peripheral face of sheet 9; G in Fig. 2 is to seeing these profile of tooth convex bodys 10, and these profile of tooth convex bodys 10 can show shape as shown in Figure 4, promptly constitute an annular.These profile of tooth convex bodys 10 are near described ventilation device 6, and are positioned at the upstream position of ventilation device 6, and the gas of discharging from the exhaust passage at profile of tooth convex body 10 intervals can enter in the ventilation device 6, and are finally discharged the outside of housings 7 by ventilation device 6.
For further improving extruder exhaust smoothness in the course of the work; The diameter of said screw rod 1 is vicissitudinous at each several part; Specifically be, the diameter at screw rod 1 two ends is greater than the diameter at place, screw rod 1 middle part, and the diameter of screw rod 1 becomes big from the middle part to two ends gradually.
On the end outer peripheral face of screw rod 1 discharging portion 15, be provided with some rhombus convex bodys 16, these rhombus convex bodys 16 in the shape of a spiral shape uniformly at intervals on the outer peripheral face of screw rod 1 this end.
Above-described embodiment is a kind of preferred version of the utility model, is not the utility model is done any pro forma restriction, under the prerequisite that does not exceed the technical scheme that claim puts down in writing, also has other variant and remodeling.
Make the content of detailed description in this specification, belong to the those skilled in the art known prior art.
Claims (10)
1. a single screw extrusion machine comprises housing, screw rod, and screw rod is arranged in the commentaries on classics chamber in the housing rotationally; The outer peripheral face of screw rod is provided with promotes mainly sheet, promotes mainly sheet spiral on the screw rod outer peripheral face and extends layout, and housing is provided with charging aperture and discharging opening; Have feeder and discharging portion on the screw rod; The feeder of screw rod is positioned at the charging aperture position of housing, and the discharging portion of screw rod is positioned at the discharging opening of housing, it is characterized in that; On the outer peripheral face of screw feed portion, be provided with the helical structure that spiral extends; The pitch of helical structure is with to promote mainly the pitch of sheet in screw feed portion variant, and helical structure at least one place takes place between the sheet intersects with promoting mainly, thereby at position formation tip-angled shape shear constitution that both intersect.
2. single screw extrusion machine according to claim 1 is characterized in that, described helical structure is the flight that is projected into the screw rod outer peripheral face outside, flight at the height on the screw rod outer peripheral face less than promoting mainly the height of sheet on the screw rod outer peripheral face.
3. single screw extrusion machine according to claim 1 is characterized in that, described helical structure is to be recessed into the inboard helicla flute of screw rod outer peripheral face.
4. according to claim 1,2 or 3 described single screw extrusion machines; It is characterized in that; The pitch of promoting mainly sheet on the said screw feed portion outer peripheral face is greater than promoting mainly the pitch of sheet at the screw rod remainder; On screw feed portion outer peripheral face, be provided with the secondary push jack that spiral extends, on secondary push jack and the screw feed portion outer peripheral face to promote mainly sheet parallel, secondary push jack at the height on the screw rod outer peripheral face less than promoting mainly the height of sheet on the screw rod outer peripheral face.
5. single screw extrusion machine according to claim 4 is characterized in that, the distance of promoting mainly between the sheet on said secondary push jack and the screw feed portion outer peripheral face equals to promote mainly the pitch of sheet on other part of screw rod.
6. according to claim 1,2 or 3 said single screw extrusion machines; It is characterized in that; Said screw rod is provided with helicitic texture in the side face in the feeder outside, in housing, is provided with the ring surface that matches with this helicitic texture, and the hand of spiral of helicitic texture is opposite with the hand of spiral of promoting mainly sheet.
7. according to claim 1,2 or 3 described single screw extrusion machines, it is characterized in that the place is provided with ventilation device at the housing medium position, ventilation device is linked up described commentaries on classics chamber and hull outside; Be provided with the profile of tooth convex body that some intervals are provided with on the sheet lateral surface promoting mainly, the interval between the profile of tooth convex body forms the exhaust passage, and the profile of tooth convex body is near described ventilation device, and is positioned at the upstream position of said ventilation device.
8. single screw extrusion machine according to claim 7 is characterized in that, described profile of tooth convex body is distributed in the pitch and promotes mainly on the lateral surface of sheet.
9. single screw extrusion machine according to claim 7 is characterized in that, the diameter of said screw rod becomes big gradually from medium position to two ends.
10. according to claim 1,2 or 3 described single screw extrusion machines, it is characterized in that, on the distolateral outer peripheral face of screw rod discharging portion, be provided with the rhombus convex body of some intervals helical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203485468U CN202225415U (en) | 2011-09-18 | 2011-09-18 | Single-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203485468U CN202225415U (en) | 2011-09-18 | 2011-09-18 | Single-screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202225415U true CN202225415U (en) | 2012-05-23 |
Family
ID=46076019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203485468U Withdrawn - After Issue CN202225415U (en) | 2011-09-18 | 2011-09-18 | Single-screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202225415U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303402A (en) * | 2011-09-18 | 2012-01-04 | 浙江百纳橡塑设备有限公司 | Single-screw extruder |
| CN103029285A (en) * | 2012-12-31 | 2013-04-10 | 浙江栋斌橡机螺杆有限公司 | Extruder |
-
2011
- 2011-09-18 CN CN2011203485468U patent/CN202225415U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303402A (en) * | 2011-09-18 | 2012-01-04 | 浙江百纳橡塑设备有限公司 | Single-screw extruder |
| CN103029285A (en) * | 2012-12-31 | 2013-04-10 | 浙江栋斌橡机螺杆有限公司 | Extruder |
| CN103029285B (en) * | 2012-12-31 | 2015-07-08 | 浙江栋斌橡机螺杆有限公司 | Extruder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120523 Effective date of abandoning: 20140423 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120523 Effective date of abandoning: 20140423 |
|
| RGAV | Abandon patent right to avoid regrant |