CN203110304U - Plastic extruder screw rod - Google Patents
Plastic extruder screw rod Download PDFInfo
- Publication number
- CN203110304U CN203110304U CN2012207195191U CN201220719519U CN203110304U CN 203110304 U CN203110304 U CN 203110304U CN 2012207195191 U CN2012207195191 U CN 2012207195191U CN 201220719519 U CN201220719519 U CN 201220719519U CN 203110304 U CN203110304 U CN 203110304U
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- China
- Prior art keywords
- screw rod
- rank
- section
- metering section
- spiral groove
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The utility model discloses a plastic extruder screw rod. The plastic extruder screw rod comprises a screw rod body, and is characterized in that multiple stages of screw rods are sequentially and unevenly arranged on different sections of the screw rod body, wherein a first-stage screw rod, a second-stage screw rod and a third-stage screw rod are arranged on the screw rod body from the right end to the left end in sequence; a first mixing part is formed between the first-stage screw rod and the second-stage screw rod; a second mixing part is formed between the second-stage screw rod and the third-stage screw rod; a first charging section, a first fusing section and a first metering section are formed on the first-stage screw rod from right to left in sequence; a second fusing section and a second metering section are formed on the second-stage screw rod; a third fusing section, a third metering section and a third mixing part with tightly arranged spiral slots are arranged on the third-stage screw rod; a first exhaust section is formed between the first mixing part and the second fusing section; and a second exhaust section is formed between the second mixing part and the third fusing section.
Description
Technical field
The utility model relates to the screw extruder field, especially a kind of waste and old film regeneration processing extruder screw.
Background technology
Waste old, plastic sheeting and chemical fibre composition are complicated, and it is inhomogeneous that cleaning-drying is handled the back humidity; Various plastics, rubber and chemical fibre copolymer are different from homopolymers, and physical characteristic and chemical characteristic differ greatly.
Be 200720038695 as the patent No., name is called a kind of Chinese utility model patent of " a kind of staged screw extruder ", it discloses a kind of structure, it comprises the first rank extruder and the second rank extruder, the described first rank extruder and the second rank extruder are " T " font or are arranged in parallel, and the discharging opening of the first rank extruder is connected with the charging aperture of the second rank extruder.Material enters the second rank extruder by the first rank extruder discharge end, enter the material of extruding on second rank and be basic plastifying state, but wears out long easily decomposition of the buildup time of staying.Existing traditional technics of reclaim of plastic waste is difficult to guarantee that with the devolatilization of staged extruder, mixing and conveying melt plastics temperature is even, is difficult to guarantee that the melt fusion is abundant.
In sum, two steps type reclaims processing technology production cost height, power consumption is big, the operation failure mode is many, a little less than the technical process control ability, thereby causes the melt quality to be difficult to assurance.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of waste and old plastic film extruder screw at the above-mentioned state of the art, it can make an extrusion molding of waste plastic regeneration goods and fully discharge volatile matter and moisture content, reduced heating surface area, effectively the control melt decomposes aging, reduce production costs, guarantee the melt plasticizing fully, further improve the melt quality.
The utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of screw of plastic extruder, comprise a screw rod body, it is characterized in that: described screw rod body is provided with multistage screw rod, described each rank screw rod anisotropically is distributed on the different paragraphs of screw rod body successively, described screw rod body is turned left successively from right-hand member and is respectively the first rank screw rod, the second rank screw rod, the 3rd rank screw rod, be provided with the first mixing place between the described first rank screw rod and the second rank screw rod, be provided with the second mixing place between the described second rank screw rod and the 3rd rank screw rod, the described first rank screw rod is turned left from the right side and is disposed with first feeding section, first melt zone and first metering section, the described second rank screw rod is provided with second melt zone and second metering section, the 3rd rank screw rod is provided with the 3rd melt zone, the 3rd metering section and screw channel the compact arranged the 3rd mixing place, be provided with first exhaust section between the described first mixing place and second melt zone, be provided with second exhaust section between the described second mixing place and the 3rd melt zone.
As improvement, the right part cross-sectional area of described every rank screw rod is littler than left part cross-sectional area, and the pitch of described first feeding section equates and spiral groove depth also equates, described first exhaust section equates with the pitch of second exhaust section and spiral groove depth is the alternative expression arrangement.
As improvement, the depth of thread of the melt zone of described every rank screw rod is diminish trend and pitch from right to left and equates.
As improvement, the depth of thread unanimity of the metering section of described every rank screw rod and pitch equate.
As improvement, the left end screw channel at the described first mixing place and the second mixing place is recess.
As improvement, the spiral groove depth of described second metering section is that first pump compares, the spiral groove depth of the 3rd metering section is second pump ratio with the ratio of the spiral groove depth of second metering section with the ratio of the spiral groove depth of first metering section, and described first pump ratio is 1.5 to 2.0 with second pump ratio.
Compared with prior art, advantage of the present utility model is: because described multistage screw rod anisotropically is distributed on the different paragraphs of screw rod body successively, every rank screw rod is provided with feeding section, melt zone and metering section, and be provided with first exhaust section and first mixing section between the first rank screw rod and the second rank screw rod, be provided with second exhaust section and the second mixing place between the second rank screw rod and the 3rd rank screw rod, and the depth of thread of different paragraphs does not wait in each rank screw rod, the structure that the pitch of different paragraphs equates or do not wait, make that the mixing of macromolecular material and reaction promoter is more even, reduced heating surface area, avoided melt to decompose aging problem effectively, and natural exhaust and the exhaust of vacuum exhaust two pass in material processing, volatile materials in moisture content and the mixed process is discharged, make plastic reclaimed goods fast, realize position and metamorphosis under the prerequisite of even running.
Description of drawings
Fig. 1 is structural representation of the present utility model;
The specific embodiment
Describe in further detail below in conjunction with the utility model of accompanying drawing embodiment.
As shown in Figure 1, a kind of screw of plastic extruder, comprise a screw rod body 19 of being made by metal material, described screw rod body 19 is provided with multistage screw rod, described each rank screw rod anisotropically is distributed on the different paragraphs of screw rod body 19 successively, described each rank screw rod is turned left successively from the right-hand member of screw rod body 19 and is respectively the first rank screw rod 1, the second rank screw rod 2, the 3rd rank screw rod 3, be provided with the first mixing place 5 between the described first rank screw rod 1 and the second rank screw rod 2, be provided with the second mixing place 6 between the described second rank screw rod 2 and the 3rd rank screw rod 3, the first rank screw rod 1 is turned left from the right side and is disposed with first feeding section 9, first melt zone 10 and first metering section 11, the second rank screw rod 2 is turned left from the right side through first exhaust section 7 and is disposed with second melt zone 13 and second metering section 14, the 3rd rank screw rod 3 is disposed with the 3rd melt zone 16 through second exhaust section 8, the 3rd metering section 17 and screw channel the compact arranged the 3rd mixing place 18, wherein, the ratio of the spiral groove depth 15 of second metering section 14 and the spiral groove depth 12 of first metering section 11 is first pump ratio, in like manner the ratio of the spiral groove depth 15 of the spiral groove depth 20 of the 3rd metering section 17 and second metering section 14 is second pump ratio, first pump gets 1.5 to 2.0 than with second pump than generally, and is stable to guarantee not overflow of exhaust outlet and extrusion pressure like this; The pitch of first feeding section 9 in the first rank screw rod 1 equates and spiral groove depth also equates, and the right part cross-sectional area of every rank screw rod is littler than left part cross-sectional area, and the spiral groove depth of first melt zone 10, second melt zone 13 and the 3rd melt zone 16 is diminish trend and pitch from right to left and equates.The spiral groove depth unanimity of first metering section 11, second metering section 14 and the 3rd metering section 17 and pitch equate that the left end screw channel at the described first mixing place 5 and the second mixing place 6 is rapid recess.
When the utility model uses, it is installed on the screw extruder body, material enters from first feeding section 9 of the first rank screw rod 1, then from first metering section, 11 to first exhaust sections 7, this moment, melt volume expanded suddenly, pressure reduces, volatile materials in the melt is overflowed, naturally discharged by the exhaust outlet on the screw rod body, melt enters second exhaust section 8 of the second rank screw rod 2 then, and from second melt zone, 13 to second exhaust sections 8, the volume of melt reexpands, pressure reduces again, volatile materials in the melt is extracted out by the exhaust outlet vacuum on the screw rod collection body, and melt enters the 3rd melt zone 16 and the 3rd metering section 17 of the 3rd rank screw rod 3 then, through the 3rd mixing place 18 shearings place, from the mouth mould, extrude.The second rank screw rod 2, the 3rd rank screw rod 3 connect first exhaust section 7, second exhaust section 8; The utility model screw channel degree of depth does not wait and pitch equates or the structure that do not wait, variation by spiral groove depth or pitch has designed a plurality of pump ratios, make the mixing of macromolecular material and reaction promoter more even, carry out natural exhaust and the exhaust of vacuum exhaust two pass in the material processing, volatile matter in moisture content and the mixed process is discharged, make plastic reclaimed goods under the prerequisite of quick, even running, realize position and metamorphosis.
The utility model has realized that existing two steps type is reclaimed processing technology changes extruding-out process of double gas list screw rod into, greatly reduce production cost, saved power consumption, reduced the operation failure mode, improved the technical process control ability, and screw channel width of the present utility model and the degree of depth are bigger, have reduced heating surface area, have avoided melt to decompose aging problem effectively, reduced temperature control requirement, guaranteed that fusion fully reaches the melt plasticization temperature and keeps homogenizing.
Claims (6)
1. screw of plastic extruder, comprise a screw rod body, it is characterized in that: described screw rod body is provided with multistage screw rod, described each rank screw rod anisotropically is distributed on the different paragraphs of screw rod body successively, described screw rod body is turned left successively from right-hand member and is respectively the first rank screw rod, the second rank screw rod, the 3rd rank screw rod, be provided with the first mixing place between the described first rank screw rod and the second rank screw rod, be provided with the second mixing place between the described second rank screw rod and the 3rd rank screw rod, the described first rank screw rod is turned left from the right side and is disposed with first feeding section, first melt zone and first metering section, the described second rank screw rod is provided with second melt zone and second metering section, the 3rd rank screw rod is provided with the 3rd melt zone, the 3rd metering section and screw channel the compact arranged the 3rd mixing place, be provided with first exhaust section between the described first mixing place and second melt zone, be provided with second exhaust section between the described second mixing place and the 3rd melt zone.
2. a kind of screw of plastic extruder according to claim 1, it is characterized in that: the right part cross-sectional area of described every rank screw rod is littler than left part cross-sectional area, the pitch of described first feeding section equates and spiral groove depth also equates, described first exhaust section equates with the pitch of second exhaust section and spiral groove depth is the alternative expression arrangement.
3. a kind of screw of plastic extruder according to claim 1 is characterized in that: the depth of thread of the melt zone of described every rank screw rod is diminish trend and pitch from right to left and equates.
4. a kind of screw of plastic extruder according to claim 1 is characterized in that: the depth of thread unanimity of the metering section of described every rank screw rod and pitch equate.
5. a kind of screw of plastic extruder according to claim 1, it is characterized in that: the left end screw channel at the described first mixing place and the second mixing place is recess.
6. a kind of screw of plastic extruder according to claim 1, it is characterized in that: the spiral groove depth of described second metering section is that first pump compares, the spiral groove depth of the 3rd metering section is second pump ratio with the ratio of the spiral groove depth of second metering section with the ratio of the spiral groove depth of first metering section, and described first pump ratio is 1.5 to 2.0 with second pump ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207195191U CN203110304U (en) | 2012-12-05 | 2012-12-05 | Plastic extruder screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207195191U CN203110304U (en) | 2012-12-05 | 2012-12-05 | Plastic extruder screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203110304U true CN203110304U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207195191U Expired - Fee Related CN203110304U (en) | 2012-12-05 | 2012-12-05 | Plastic extruder screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203110304U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108166A (en) * | 2013-07-23 | 2014-10-22 | 江苏鸿云翔橡塑机械有限公司 | Dual exhausting screw |
| CN104129058A (en) * | 2014-07-30 | 2014-11-05 | 安庆钰龙橡塑机械制造有限公司 | Rubber extruding machine screw |
| CN104260259A (en) * | 2014-08-07 | 2015-01-07 | 宁波华业材料科技有限公司 | Preparation method for leftover material molded parts of automotive interior parts |
| CN116482002A (en) * | 2023-06-19 | 2023-07-25 | 中粮资本科技有限责任公司 | Grain quantity detection device and method based on grain pile form change |
-
2012
- 2012-12-05 CN CN2012207195191U patent/CN203110304U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108166A (en) * | 2013-07-23 | 2014-10-22 | 江苏鸿云翔橡塑机械有限公司 | Dual exhausting screw |
| CN104129058A (en) * | 2014-07-30 | 2014-11-05 | 安庆钰龙橡塑机械制造有限公司 | Rubber extruding machine screw |
| CN104260259A (en) * | 2014-08-07 | 2015-01-07 | 宁波华业材料科技有限公司 | Preparation method for leftover material molded parts of automotive interior parts |
| CN106079163A (en) * | 2014-08-07 | 2016-11-09 | 宁波华业材料科技有限公司 | A kind of preparation method of automotive upholstery leftover pieces pressing |
| CN104260259B (en) * | 2014-08-07 | 2017-02-08 | 宁波华业材料科技有限公司 | Preparation method for leftover material molded parts of automotive interior parts |
| CN106079163B (en) * | 2014-08-07 | 2019-01-25 | 宁波华业材料科技有限公司 | A kind of preparation method of automotive upholstery leftover pieces molded article |
| CN116482002A (en) * | 2023-06-19 | 2023-07-25 | 中粮资本科技有限责任公司 | Grain quantity detection device and method based on grain pile form change |
| CN116482002B (en) * | 2023-06-19 | 2023-08-18 | 中粮资本科技有限责任公司 | Grain quantity detection device and method based on grain pile form change |
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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 |
Granted publication date: 20130807 Termination date: 20151205 |
|
| EXPY | Termination of patent right or utility model |