CN104647727A - Plastic extruder - Google Patents
Plastic extruder Download PDFInfo
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- CN104647727A CN104647727A CN201410071078.2A CN201410071078A CN104647727A CN 104647727 A CN104647727 A CN 104647727A CN 201410071078 A CN201410071078 A CN 201410071078A CN 104647727 A CN104647727 A CN 104647727A
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- plastic
- barrel
- heating
- cylindrical shell
- plastic extruder
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a plastic extruder, relating to the technical field of manufacturing of plastic extruders. The plastic extruder comprises a plurality of barrel body units connected with one another in sequence, wherein each barrel body unit is provided with a barrel body in which a barrel sleeve is arranged; the barrel sleeves are communicated with one another in sequence to form a plastic extruding channel; two meshed screw rods are arranged in the plastic extruding channel in a penetrating manner; each barrel sleeve consists of two arc-shaped barrels with penetrating-connection side walls, and the two arc-shaped barrels are connected into a whole; a clearance between the inner wall of each barrel sleeve and the bus on the outer circle of each of the two screws is 0.2-0.25mm; a plurality of heating pipes are arranged in the barrel bodies relative to the transverse direction of the plastic extruding channel, and the two ends of each heating pipe respectively extend out of the two side surfaces; the two ends of each heating pipe are respectively communicated with an oil outlet and an oil return opening of a heating oil station through oil pipes. Compared with the prior art, the plastic extruder disclosed by the invention has the advantage that the problem that the quality of a product is affected by long heating time of the barrel body units of the existing plastic extruder and generation of impurities caused by easy carbonization of leftovers retained on the inner walls of the barrel sleeves can be solved.
Description
Technical field
The present invention relates to plastic extruder manufacturing technology field, especially a kind of machine barrel for double-screw plastic extrusion machine.
Background technology
Double-screw plastic extrusion machine is one of important parts of double-screw plastic extrusion machine, its operation principle be various plastic raw materials is fully mixed be input to plastic extruder machine barrel on carry out heating and melting, the modified plastics of melting is configured as strip by die head of plastic extruding machine by the raw material after melting, and cutting off for follow-up equipment becomes particulate material.The plastic extruder of existing a kind of twin-screw, this plastic extruder includes multiple canister unit connected successively, each described canister unit all has the cylindrical shell being provided with jacket casing in, jacket casing described in these is connected formation plastic extrusion passage successively, in described plastic extrusion passage, be coated with two intermeshing screw rods, the arc tube that described jacket casing passes through interlocking mutually by two sidewalls is formed; In each described canister unit outer wrap one deck Electric radiant Heating Film.In use there are the following problems for this plastic extruder: 1, owing to being undertaken by the outside Electric radiant Heating Film of parcel cylindrical shell the heating of cylindrical shell, although be provided with insulation heat preservation layer outside Electric radiant Heating Film, but still have a large amount of heat energy not to be fully used, cause that the heat time is long, energy consumption is high; 2, because jacket casing is connected and composed by two arc tubes, for ease of two arc tubes interlocking and prevent because alignment error causes screw rod interference, add and intentionally arc tube intracavity diameter is strengthened man-hour, therefore, cause the gap of two arc tube inwalls and two screw rod cylindrical buses large, two screw rods are when engaging each other material extrusion, and the easy carbonization of clout remaining in jacket casing inwall produces impurity and affects the product quality of modified plastics; 3, the heating-up temperature of machine barrel cannot be regulated according to raw materials for production.
Summary of the invention
Problem solved by the invention is to provide a kind of plastic extruder, has clout to remain easy carbonization generation impurity and affect the problem of product quality with the canister unit heat time length and jacket casing inwall that solve existing plastic extruder.
In order to solve the problem, the technical solution used in the present invention is: this plastic extruder includes multiple canister unit connected successively, each described canister unit all has the cylindrical shell being provided with jacket casing in, the described jacket casing of canister unit described in these is connected formation plastic extrusion passage successively, two intermeshing screw rods are coated with in described plastic extrusion passage, the arc tube that described jacket casing passes through connection mutually by two sidewalls is formed, two described arc tubes are connected as a whole, the gap of the inwall of described jacket casing and two described screw rod cylindrical buses is 0.2 millimeter ~ 0.25 millimeter,
In described cylindrical shell, be horizontally arranged with the heating tube that its two sides are stretched out at many two ends respectively relative to described plastic extrusion passage, the two ends of described heating tube are connected with oil return opening respectively by the oil-out of oil pipe with heating petrol station.
In above-mentioned plastic extruder technical scheme, technical scheme can also be more specifically: many described heating tubes are set in parallel, and described heating tube is copper pipe.
Further, described cylindrical shell is provided with the temperature sensor be connected with controller.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect: 1, because two arc tubes of jacket casing are the entirety be connected, can better by controlling its arc tube embedded SMA actuators positional precision and dimensional accuracy guarantees that the assemblage gap of two arc tube inwalls and two screw rods is at an optimum range, two intermeshing screw rods can be completed well and extrude feeding forward, the clout remaining in jacket casing inwall can be made again to reduce to minimum, improve the product quality of producing modified plastics; 2, owing to being built-in with at the parameatal cylindrical shell of plastic extrusion the heating tube that material is copper pipe, and adopt conduction oil to heat cylindrical shell, substantially increase the efficiency of heating surface, adopt heated by electrothermal film energy-conservation 25% than cylindrical shell; 3, owing to being provided with temperature sensor on cylindrical shell, the heating-up temperature of cylindrical shell can be regulated according to raw material.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the structural representation of the cylindrical shell of the embodiment of the present invention.
Fig. 3 is the structural representation at the A-A place of Fig. 2.
Fig. 4 is the K direction view of Fig. 2.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the invention will be further described:
Embodiment 1:
Plastic extruder as shown in Figure 1, Figure 2, Figure 3 and Figure 4 includes four canister unit connected successively, and each canister unit all has the cylindrical shell 1 being provided with jacket casing 7 in, is bolted between cylindrical shell 1 and cylindrical shell 1; Jacket casing 7 in these cylindrical shells 1 is connected formation plastic extrusion passage 8 successively, two intermeshing screw rods 6 are coated with in plastic extrusion passage 8, the arc tube that jacket casing 7 passes through connection mutually by two sidewalls is formed, two arc tubes are the entirety be connected, the jacket casing 7 of the present embodiment is made up of steel-casting, and the gap s of the inwall of jacket casing 7 and two screw rod 3 cylindrical buses is 0.2 millimeter.
Be horizontally arranged with relative to plastic extrusion passage 8 heating tube 2 that its two sides are stretched out at many two ends respectively in cylindrical shell 1, many heating tubes are set in parallel nearly plastic extrusion passage 8 place of nearly plastic extrusion passage 8 place that is installed on cylindrical shell 1 top and cylindrical shell 1 bottom, pipe joint 2-1 is all connected with at the two ends of every root heating tube 2, one end of heating tube 2 is connected with the oil-out of heating petrol station 5 by the oil pipe be connected with pipe joint 2-1, the other end of heating tube 2 is connected with oil return opening by the oil pipe that is connected with pipe joint 2-1 and heating petrol station 5, the heating tube 2 of the present embodiment is copper pipe, because the material heating tube that is copper pipe is distributed in nearly plastic extrusion passage 8 place of cylindrical shell 1, when adopting conduction oil to heat cylindrical shell, greatly the efficiency of heating surface can be improved, first cylindrical shell 1 in these four cylindrical shell 1 front ends is separately installed with two temperature sensors 3 be connected with controller 4 with on the 4th cylindrical shell 1 of end, and the temp probe of temperature sensor 3 is contained on cylindrical shell 1 by probe mount pad.
During work, the conduction oil that controller 4 controls to flow out from heating petrol station 5 heats cylindrical shell 1, makes cylindrical shell 1 carry out heating and melting to from the raw material squeezed through plastic extrusion passage 8 by two intermeshing screw rods; Cylindrical shell 1 is equipped with temperature sensor, and controller 4 is by controlling the heating-up temperature of the temperature adjustment cylindrical shell 1 of the conduction oil of deep fat station 5 output.
Embodiment 2:
The gap s of the inwall of jacket casing 7 and two screw rod 3 cylindrical buses is 0.25 millimeter; Other features are identical with embodiment 1.
Claims (3)
1. a plastic extruder, include multiple canister unit connected successively, each described canister unit all has the cylindrical shell (1) being provided with jacket casing (7) in, the described jacket casing (7) of canister unit described in these is connected formation plastic extrusion passage (8) successively, two intermeshing screw rods (6) are coated with in described plastic extrusion passage (8), the arc tube that described jacket casing (7) passes through connection mutually by two sidewalls is formed, it is characterized in that: two described arc tubes are connected as a whole, the inwall of described jacket casing (7) and the gap (s) of two described screw rod (6) cylindrical buses are 0.2 millimeter ~ 0.25 millimeter,
In described cylindrical shell (1), be horizontally arranged with the heating tube (2) that its two sides are stretched out at many two ends respectively relative to described plastic extrusion passage (8), the two ends of described heating tube (2) are connected with oil return opening respectively by the oil-out of oil pipe with heating petrol station (5).
2. plastic extruder according to claim 1, is characterized in that: many described heating tubes (2) are set in parallel, and described heating tube (2) is copper pipe.
3. plastic extruder according to claim 1 and 2, is characterized in that: on described cylindrical shell (1), be provided with the temperature sensor (3) be connected with controller (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071078.2A CN104647727A (en) | 2014-02-28 | 2014-02-28 | Plastic extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071078.2A CN104647727A (en) | 2014-02-28 | 2014-02-28 | Plastic extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104647727A true CN104647727A (en) | 2015-05-27 |
Family
ID=53239597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410071078.2A Pending CN104647727A (en) | 2014-02-28 | 2014-02-28 | Plastic extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104647727A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105216275A (en) * | 2015-10-26 | 2016-01-06 | 重庆久通技术有限公司 | Double screw extruder |
| CN105235184A (en) * | 2015-10-26 | 2016-01-13 | 重庆久通技术有限公司 | Plastic extrusion production line |
-
2014
- 2014-02-28 CN CN201410071078.2A patent/CN104647727A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 沈言锦: "《冲压与塑压成型设备》", 28 February 2009 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105216275A (en) * | 2015-10-26 | 2016-01-06 | 重庆久通技术有限公司 | Double screw extruder |
| CN105235184A (en) * | 2015-10-26 | 2016-01-13 | 重庆久通技术有限公司 | Plastic extrusion production line |
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Application publication date: 20150527 |
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| RJ01 | Rejection of invention patent application after publication |